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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 46
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  85         /* required last entry */
  86         {0, }
  87 };
  88 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  89
  90 #define I40E_MAX_VF_COUNT 128
  91 static int debug = -1;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  94
  95 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  96 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  97 MODULE_LICENSE("GPL");
  98 MODULE_VERSION(DRV_VERSION);
  99
 100 /**
 101  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 102  * @hw:   pointer to the HW structure
 103  * @mem:  ptr to mem struct to fill out
 104  * @size: size of memory requested
 105  * @alignment: what to align the allocation to
 106  **/
 107 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 108                             u64 size, u32 alignment)
 109 {
 110         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 111
 112         mem->size = ALIGN(size, alignment);
 113         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 114                                       &mem->pa, GFP_KERNEL);
 115         if (!mem->va)
 116                 return -ENOMEM;
 117
 118         return 0;
 119 }
 120
 121 /**
 122  * i40e_free_dma_mem_d - OS specific memory free for shared code
 123  * @hw:   pointer to the HW structure
 124  * @mem:  ptr to mem struct to free
 125  **/
 126 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 127 {
 128         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 129
 130         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 131         mem->va = NULL;
 132         mem->pa = 0;
 133         mem->size = 0;
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 140  * @hw:   pointer to the HW structure
 141  * @mem:  ptr to mem struct to fill out
 142  * @size: size of memory requested
 143  **/
 144 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 145                              u32 size)
 146 {
 147         mem->size = size;
 148         mem->va = kzalloc(size, GFP_KERNEL);
 149
 150         if (!mem->va)
 151                 return -ENOMEM;
 152
 153         return 0;
 154 }
 155
 156 /**
 157  * i40e_free_virt_mem_d - OS specific memory free for shared code
 158  * @hw:   pointer to the HW structure
 159  * @mem:  ptr to mem struct to free
 160  **/
 161 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 162 {
 163         /* it's ok to kfree a NULL pointer */
 164         kfree(mem->va);
 165         mem->va = NULL;
 166         mem->size = 0;
 167
 168         return 0;
 169 }
 170
 171 /**
 172  * i40e_get_lump - find a lump of free generic resource
 173  * @pf: board private structure
 174  * @pile: the pile of resource to search
 175  * @needed: the number of items needed
 176  * @id: an owner id to stick on the items assigned
 177  *
 178  * Returns the base item index of the lump, or negative for error
 179  *
 180  * The search_hint trick and lack of advanced fit-finding only work
 181  * because we're highly likely to have all the same size lump requests.
 182  * Linear search time and any fragmentation should be minimal.
 183  **/
 184 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 185                          u16 needed, u16 id)
 186 {
 187         int ret = -ENOMEM;
 188         int i, j;
 189
 190         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 191                 dev_info(&pf->pdev->dev,
 192                          "param err: pile=%p needed=%d id=0x%04x\n",
 193                          pile, needed, id);
 194                 return -EINVAL;
 195         }
 196
 197         /* start the linear search with an imperfect hint */
 198         i = pile->search_hint;
 199         while (i < pile->num_entries) {
 200                 /* skip already allocated entries */
 201                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 202                         i++;
 203                         continue;
 204                 }
 205
 206                 /* do we have enough in this lump? */
 207                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 208                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 209                                 break;
 210                 }
 211
 212                 if (j == needed) {
 213                         /* there was enough, so assign it to the requestor */
 214                         for (j = 0; j < needed; j++)
 215                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 216                         ret = i;
 217                         pile->search_hint = i + j;
 218                         break;
 219                 }
 220
 221                 /* not enough, so skip over it and continue looking */
 222                 i += j;
 223         }
 224
 225         return ret;
 226 }
 227
 228 /**
 229  * i40e_put_lump - return a lump of generic resource
 230  * @pile: the pile of resource to search
 231  * @index: the base item index
 232  * @id: the owner id of the items assigned
 233  *
 234  * Returns the count of items in the lump
 235  **/
 236 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 237 {
 238         int valid_id = (id | I40E_PILE_VALID_BIT);
 239         int count = 0;
 240         int i;
 241
 242         if (!pile || index >= pile->num_entries)
 243                 return -EINVAL;
 244
 245         for (i = index;
 246              i < pile->num_entries && pile->list[i] == valid_id;
 247              i++) {
 248                 pile->list[i] = 0;
 249                 count++;
 250         }
 251
 252         if (count && index < pile->search_hint)
 253                 pile->search_hint = index;
 254
 255         return count;
 256 }
 257
 258 /**
 259  * i40e_find_vsi_from_id - searches for the vsi with the given id
 260  * @pf - the pf structure to search for the vsi
 261  * @id - id of the vsi it is searching for
 262  **/
 263 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 264 {
 265         int i;
 266
 267         for (i = 0; i < pf->num_alloc_vsi; i++)
 268                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 269                         return pf->vsi[i];
 270
 271         return NULL;
 272 }
 273
 274 /**
 275  * i40e_service_event_schedule - Schedule the service task to wake up
 276  * @pf: board private structure
 277  *
 278  * If not already scheduled, this puts the task into the work queue
 279  **/
 280 static void i40e_service_event_schedule(struct i40e_pf *pf)
 281 {
 282         if (!test_bit(__I40E_DOWN, &pf->state) &&
 283             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 284             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 285                 schedule_work(&pf->service_task);
 286 }
 287
 288 /**
 289  * i40e_tx_timeout - Respond to a Tx Hang
 290  * @netdev: network interface device structure
 291  *
 292  * If any port has noticed a Tx timeout, it is likely that the whole
 293  * device is munged, not just the one netdev port, so go for the full
 294  * reset.
 295  **/
 296 #ifdef I40E_FCOE
 297 void i40e_tx_timeout(struct net_device *netdev)
 298 #else
 299 static void i40e_tx_timeout(struct net_device *netdev)
 300 #endif
 301 {
 302         struct i40e_netdev_priv *np = netdev_priv(netdev);
 303         struct i40e_vsi *vsi = np->vsi;
 304         struct i40e_pf *pf = vsi->back;
 305         struct i40e_ring *tx_ring = NULL;
 306         unsigned int i, hung_queue = 0;
 307         u32 head, val;
 308
 309         pf->tx_timeout_count++;
 310
 311         /* find the stopped queue the same way the stack does */
 312         for (i = 0; i < netdev->num_tx_queues; i++) {
 313                 struct netdev_queue *q;
 314                 unsigned long trans_start;
 315
 316                 q = netdev_get_tx_queue(netdev, i);
 317                 trans_start = q->trans_start ? : netdev->trans_start;
 318                 if (netif_xmit_stopped(q) &&
 319                     time_after(jiffies,
 320                                (trans_start + netdev->watchdog_timeo))) {
 321                         hung_queue = i;
 322                         break;
 323                 }
 324         }
 325
 326         if (i == netdev->num_tx_queues) {
 327                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 328         } else {
 329                 /* now that we have an index, find the tx_ring struct */
 330                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 331                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 332                                 if (hung_queue ==
 333                                     vsi->tx_rings[i]->queue_index) {
 334                                         tx_ring = vsi->tx_rings[i];
 335                                         break;
 336                                 }
 337                         }
 338                 }
 339         }
 340
 341         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 342                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 343         else if (time_before(jiffies,
 344                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 345                 return;   /* don't do any new action before the next timeout */
 346
 347         if (tx_ring) {
 348                 head = i40e_get_head(tx_ring);
 349                 /* Read interrupt register */
 350                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 351                         val = rd32(&pf->hw,
 352                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 353                                                 tx_ring->vsi->base_vector - 1));
 354                 else
 355                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 356
 357                 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",
 358                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 359                             head, tx_ring->next_to_use,
 360                             readl(tx_ring->tail), val);
 361         }
 362
 363         pf->tx_timeout_last_recovery = jiffies;
 364         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 365                     pf->tx_timeout_recovery_level, hung_queue);
 366
 367         switch (pf->tx_timeout_recovery_level) {
 368         case 1:
 369                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 370                 break;
 371         case 2:
 372                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 373                 break;
 374         case 3:
 375                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 376                 break;
 377         default:
 378                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 379                 break;
 380         }
 381
 382         i40e_service_event_schedule(pf);
 383         pf->tx_timeout_recovery_level++;
 384 }
 385
 386 /**
 387  * i40e_release_rx_desc - Store the new tail and head values
 388  * @rx_ring: ring to bump
 389  * @val: new head index
 390  **/
 391 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 392 {
 393         rx_ring->next_to_use = val;
 394
 395         /* Force memory writes to complete before letting h/w
 396          * know there are new descriptors to fetch.  (Only
 397          * applicable for weak-ordered memory model archs,
 398          * such as IA-64).
 399          */
 400         wmb();
 401         writel(val, rx_ring->tail);
 402 }
 403
 404 /**
 405  * i40e_get_vsi_stats_struct - Get System Network Statistics
 406  * @vsi: the VSI we care about
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 412 {
 413         return &vsi->net_stats;
 414 }
 415
 416 /**
 417  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 418  * @netdev: network interface device structure
 419  *
 420  * Returns the address of the device statistics structure.
 421  * The statistics are actually updated from the service task.
 422  **/
 423 #ifdef I40E_FCOE
 424 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 425                                              struct net_device *netdev,
 426                                              struct rtnl_link_stats64 *stats)
 427 #else
 428 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 429                                              struct net_device *netdev,
 430                                              struct rtnl_link_stats64 *stats)
 431 #endif
 432 {
 433         struct i40e_netdev_priv *np = netdev_priv(netdev);
 434         struct i40e_ring *tx_ring, *rx_ring;
 435         struct i40e_vsi *vsi = np->vsi;
 436         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 437         int i;
 438
 439         if (test_bit(__I40E_DOWN, &vsi->state))
 440                 return stats;
 441
 442         if (!vsi->tx_rings)
 443                 return stats;
 444
 445         rcu_read_lock();
 446         for (i = 0; i < vsi->num_queue_pairs; i++) {
 447                 u64 bytes, packets;
 448                 unsigned int start;
 449
 450                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 451                 if (!tx_ring)
 452                         continue;
 453
 454                 do {
 455                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 456                         packets = tx_ring->stats.packets;
 457                         bytes   = tx_ring->stats.bytes;
 458                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 459
 460                 stats->tx_packets += packets;
 461                 stats->tx_bytes   += bytes;
 462                 rx_ring = &tx_ring[1];
 463
 464                 do {
 465                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 466                         packets = rx_ring->stats.packets;
 467                         bytes   = rx_ring->stats.bytes;
 468                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 469
 470                 stats->rx_packets += packets;
 471                 stats->rx_bytes   += bytes;
 472         }
 473         rcu_read_unlock();
 474
 475         /* following stats updated by i40e_watchdog_subtask() */
 476         stats->multicast        = vsi_stats->multicast;
 477         stats->tx_errors        = vsi_stats->tx_errors;
 478         stats->tx_dropped       = vsi_stats->tx_dropped;
 479         stats->rx_errors        = vsi_stats->rx_errors;
 480         stats->rx_dropped       = vsi_stats->rx_dropped;
 481         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 482         stats->rx_length_errors = vsi_stats->rx_length_errors;
 483
 484         return stats;
 485 }
 486
 487 /**
 488  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 489  * @vsi: the VSI to have its stats reset
 490  **/
 491 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 492 {
 493         struct rtnl_link_stats64 *ns;
 494         int i;
 495
 496         if (!vsi)
 497                 return;
 498
 499         ns = i40e_get_vsi_stats_struct(vsi);
 500         memset(ns, 0, sizeof(*ns));
 501         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 502         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 503         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 504         if (vsi->rx_rings && vsi->rx_rings[0]) {
 505                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 506                         memset(&vsi->rx_rings[i]->stats, 0,
 507                                sizeof(vsi->rx_rings[i]->stats));
 508                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 509                                sizeof(vsi->rx_rings[i]->rx_stats));
 510                         memset(&vsi->tx_rings[i]->stats, 0,
 511                                sizeof(vsi->tx_rings[i]->stats));
 512                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 513                                sizeof(vsi->tx_rings[i]->tx_stats));
 514                 }
 515         }
 516         vsi->stat_offsets_loaded = false;
 517 }
 518
 519 /**
 520  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 521  * @pf: the PF to be reset
 522  **/
 523 void i40e_pf_reset_stats(struct i40e_pf *pf)
 524 {
 525         int i;
 526
 527         memset(&pf->stats, 0, sizeof(pf->stats));
 528         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 529         pf->stat_offsets_loaded = false;
 530
 531         for (i = 0; i < I40E_MAX_VEB; i++) {
 532                 if (pf->veb[i]) {
 533                         memset(&pf->veb[i]->stats, 0,
 534                                sizeof(pf->veb[i]->stats));
 535                         memset(&pf->veb[i]->stats_offsets, 0,
 536                                sizeof(pf->veb[i]->stats_offsets));
 537                         pf->veb[i]->stat_offsets_loaded = false;
 538                 }
 539         }
 540 }
 541
 542 /**
 543  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 544  * @hw: ptr to the hardware info
 545  * @hireg: the high 32 bit reg to read
 546  * @loreg: the low 32 bit reg to read
 547  * @offset_loaded: has the initial offset been loaded yet
 548  * @offset: ptr to current offset value
 549  * @stat: ptr to the stat
 550  *
 551  * Since the device stats are not reset at PFReset, they likely will not
 552  * be zeroed when the driver starts.  We'll save the first values read
 553  * and use them as offsets to be subtracted from the raw values in order
 554  * to report stats that count from zero.  In the process, we also manage
 555  * the potential roll-over.
 556  **/
 557 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 558                                bool offset_loaded, u64 *offset, u64 *stat)
 559 {
 560         u64 new_data;
 561
 562         if (hw->device_id == I40E_DEV_ID_QEMU) {
 563                 new_data = rd32(hw, loreg);
 564                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 565         } else {
 566                 new_data = rd64(hw, loreg);
 567         }
 568         if (!offset_loaded)
 569                 *offset = new_data;
 570         if (likely(new_data >= *offset))
 571                 *stat = new_data - *offset;
 572         else
 573                 *stat = (new_data + BIT_ULL(48)) - *offset;
 574         *stat &= 0xFFFFFFFFFFFFULL;
 575 }
 576
 577 /**
 578  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 579  * @hw: ptr to the hardware info
 580  * @reg: the hw reg to read
 581  * @offset_loaded: has the initial offset been loaded yet
 582  * @offset: ptr to current offset value
 583  * @stat: ptr to the stat
 584  **/
 585 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 586                                bool offset_loaded, u64 *offset, u64 *stat)
 587 {
 588         u32 new_data;
 589
 590         new_data = rd32(hw, reg);
 591         if (!offset_loaded)
 592                 *offset = new_data;
 593         if (likely(new_data >= *offset))
 594                 *stat = (u32)(new_data - *offset);
 595         else
 596                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 597 }
 598
 599 /**
 600  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 601  * @vsi: the VSI to be updated
 602  **/
 603 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 604 {
 605         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 606         struct i40e_pf *pf = vsi->back;
 607         struct i40e_hw *hw = &pf->hw;
 608         struct i40e_eth_stats *oes;
 609         struct i40e_eth_stats *es;     /* device's eth stats */
 610
 611         es = &vsi->eth_stats;
 612         oes = &vsi->eth_stats_offsets;
 613
 614         /* Gather up the stats that the hw collects */
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_discards, &es->rx_discards);
 621         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 622                            vsi->stat_offsets_loaded,
 623                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 624         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->tx_errors, &es->tx_errors);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 629                            I40E_GLV_GORCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->rx_bytes, &es->rx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 633                            I40E_GLV_UPRCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_unicast, &es->rx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 637                            I40E_GLV_MPRCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->rx_multicast, &es->rx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 641                            I40E_GLV_BPRCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->rx_broadcast, &es->rx_broadcast);
 644
 645         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 646                            I40E_GLV_GOTCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->tx_bytes, &es->tx_bytes);
 649         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 650                            I40E_GLV_UPTCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->tx_unicast, &es->tx_unicast);
 653         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 654                            I40E_GLV_MPTCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->tx_multicast, &es->tx_multicast);
 657         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 658                            I40E_GLV_BPTCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->tx_broadcast, &es->tx_broadcast);
 661         vsi->stat_offsets_loaded = true;
 662 }
 663
 664 /**
 665  * i40e_update_veb_stats - Update Switch component statistics
 666  * @veb: the VEB being updated
 667  **/
 668 static void i40e_update_veb_stats(struct i40e_veb *veb)
 669 {
 670         struct i40e_pf *pf = veb->pf;
 671         struct i40e_hw *hw = &pf->hw;
 672         struct i40e_eth_stats *oes;
 673         struct i40e_eth_stats *es;     /* device's eth stats */
 674         struct i40e_veb_tc_stats *veb_oes;
 675         struct i40e_veb_tc_stats *veb_es;
 676         int i, idx = 0;
 677
 678         idx = veb->stats_idx;
 679         es = &veb->stats;
 680         oes = &veb->stats_offsets;
 681         veb_es = &veb->tc_stats;
 682         veb_oes = &veb->tc_stats_offsets;
 683
 684         /* Gather up the stats that the hw collects */
 685         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->tx_discards, &es->tx_discards);
 688         if (hw->revision_id > 0)
 689                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 690                                    veb->stat_offsets_loaded,
 691                                    &oes->rx_unknown_protocol,
 692                                    &es->rx_unknown_protocol);
 693         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_bytes, &es->rx_bytes);
 696         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->rx_unicast, &es->rx_unicast);
 699         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->rx_multicast, &es->rx_multicast);
 702         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->rx_broadcast, &es->rx_broadcast);
 705
 706         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_bytes, &es->tx_bytes);
 709         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->tx_unicast, &es->tx_unicast);
 712         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->tx_multicast, &es->tx_multicast);
 715         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 716                            veb->stat_offsets_loaded,
 717                            &oes->tx_broadcast, &es->tx_broadcast);
 718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 720                                    I40E_GLVEBTC_RPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_rx_packets[i],
 723                                    &veb_es->tc_rx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 725                                    I40E_GLVEBTC_RBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_rx_bytes[i],
 728                                    &veb_es->tc_rx_bytes[i]);
 729                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 730                                    I40E_GLVEBTC_TPCL(i, idx),
 731                                    veb->stat_offsets_loaded,
 732                                    &veb_oes->tc_tx_packets[i],
 733                                    &veb_es->tc_tx_packets[i]);
 734                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 735                                    I40E_GLVEBTC_TBCL(i, idx),
 736                                    veb->stat_offsets_loaded,
 737                                    &veb_oes->tc_tx_bytes[i],
 738                                    &veb_es->tc_tx_bytes[i]);
 739         }
 740         veb->stat_offsets_loaded = true;
 741 }
 742
 743 #ifdef I40E_FCOE
 744 /**
 745  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 746  * @vsi: the VSI that is capable of doing FCoE
 747  **/
 748 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct i40e_hw *hw = &pf->hw;
 752         struct i40e_fcoe_stats *ofs;
 753         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 754         int idx;
 755
 756         if (vsi->type != I40E_VSI_FCOE)
 757                 return;
 758
 759         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 760         fs = &vsi->fcoe_stats;
 761         ofs = &vsi->fcoe_stats_offsets;
 762
 763         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 772         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 775         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 778         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 781         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 784         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 785                            vsi->fcoe_stat_offsets_loaded,
 786                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 787
 788         vsi->fcoe_stat_offsets_loaded = true;
 789 }
 790
 791 #endif
 792 /**
 793  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 794  * @pf: the corresponding PF
 795  *
 796  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 797  **/
 798 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 799 {
 800         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 801         struct i40e_hw_port_stats *nsd = &pf->stats;
 802         struct i40e_hw *hw = &pf->hw;
 803         u64 xoff = 0;
 804
 805         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 806             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 807                 return;
 808
 809         xoff = nsd->link_xoff_rx;
 810         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 811                            pf->stat_offsets_loaded,
 812                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 813
 814         /* No new LFC xoff rx */
 815         if (!(nsd->link_xoff_rx - xoff))
 816                 return;
 817
 818 }
 819
 820 /**
 821  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 822  * @pf: the corresponding PF
 823  *
 824  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 825  **/
 826 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 827 {
 828         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 829         struct i40e_hw_port_stats *nsd = &pf->stats;
 830         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 831         struct i40e_dcbx_config *dcb_cfg;
 832         struct i40e_hw *hw = &pf->hw;
 833         u16 i;
 834         u8 tc;
 835
 836         dcb_cfg = &hw->local_dcbx_config;
 837
 838         /* Collect Link XOFF stats when PFC is disabled */
 839         if (!dcb_cfg->pfc.pfcenable) {
 840                 i40e_update_link_xoff_rx(pf);
 841                 return;
 842         }
 843
 844         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 845                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 846
 847                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 848                                    pf->stat_offsets_loaded,
 849                                    &osd->priority_xoff_rx[i],
 850                                    &nsd->priority_xoff_rx[i]);
 851
 852                 /* No new PFC xoff rx */
 853                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 854                         continue;
 855                 /* Get the TC for given priority */
 856                 tc = dcb_cfg->etscfg.prioritytable[i];
 857                 xoff[tc] = true;
 858         }
 859 }
 860
 861 /**
 862  * i40e_update_vsi_stats - Update the vsi statistics counters.
 863  * @vsi: the VSI to be updated
 864  *
 865  * There are a few instances where we store the same stat in a
 866  * couple of different structs.  This is partly because we have
 867  * the netdev stats that need to be filled out, which is slightly
 868  * different from the "eth_stats" defined by the chip and used in
 869  * VF communications.  We sort it out here.
 870  **/
 871 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 872 {
 873         struct i40e_pf *pf = vsi->back;
 874         struct rtnl_link_stats64 *ons;
 875         struct rtnl_link_stats64 *ns;   /* netdev stats */
 876         struct i40e_eth_stats *oes;
 877         struct i40e_eth_stats *es;     /* device's eth stats */
 878         u32 tx_restart, tx_busy;
 879         struct i40e_ring *p;
 880         u32 rx_page, rx_buf;
 881         u64 bytes, packets;
 882         unsigned int start;
 883         u64 tx_linearize;
 884         u64 rx_p, rx_b;
 885         u64 tx_p, tx_b;
 886         u16 q;
 887
 888         if (test_bit(__I40E_DOWN, &vsi->state) ||
 889             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 890                 return;
 891
 892         ns = i40e_get_vsi_stats_struct(vsi);
 893         ons = &vsi->net_stats_offsets;
 894         es = &vsi->eth_stats;
 895         oes = &vsi->eth_stats_offsets;
 896
 897         /* Gather up the netdev and vsi stats that the driver collects
 898          * on the fly during packet processing
 899          */
 900         rx_b = rx_p = 0;
 901         tx_b = tx_p = 0;
 902         tx_restart = tx_busy = tx_linearize = 0;
 903         rx_page = 0;
 904         rx_buf = 0;
 905         rcu_read_lock();
 906         for (q = 0; q < vsi->num_queue_pairs; q++) {
 907                 /* locate Tx ring */
 908                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 909
 910                 do {
 911                         start = u64_stats_fetch_begin_irq(&p->syncp);
 912                         packets = p->stats.packets;
 913                         bytes = p->stats.bytes;
 914                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 915                 tx_b += bytes;
 916                 tx_p += packets;
 917                 tx_restart += p->tx_stats.restart_queue;
 918                 tx_busy += p->tx_stats.tx_busy;
 919                 tx_linearize += p->tx_stats.tx_linearize;
 920
 921                 /* Rx queue is part of the same block as Tx queue */
 922                 p = &p[1];
 923                 do {
 924                         start = u64_stats_fetch_begin_irq(&p->syncp);
 925                         packets = p->stats.packets;
 926                         bytes = p->stats.bytes;
 927                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 928                 rx_b += bytes;
 929                 rx_p += packets;
 930                 rx_buf += p->rx_stats.alloc_buff_failed;
 931                 rx_page += p->rx_stats.alloc_page_failed;
 932         }
 933         rcu_read_unlock();
 934         vsi->tx_restart = tx_restart;
 935         vsi->tx_busy = tx_busy;
 936         vsi->tx_linearize = tx_linearize;
 937         vsi->rx_page_failed = rx_page;
 938         vsi->rx_buf_failed = rx_buf;
 939
 940         ns->rx_packets = rx_p;
 941         ns->rx_bytes = rx_b;
 942         ns->tx_packets = tx_p;
 943         ns->tx_bytes = tx_b;
 944
 945         /* update netdev stats from eth stats */
 946         i40e_update_eth_stats(vsi);
 947         ons->tx_errors = oes->tx_errors;
 948         ns->tx_errors = es->tx_errors;
 949         ons->multicast = oes->rx_multicast;
 950         ns->multicast = es->rx_multicast;
 951         ons->rx_dropped = oes->rx_discards;
 952         ns->rx_dropped = es->rx_discards;
 953         ons->tx_dropped = oes->tx_discards;
 954         ns->tx_dropped = es->tx_discards;
 955
 956         /* pull in a couple PF stats if this is the main vsi */
 957         if (vsi == pf->vsi[pf->lan_vsi]) {
 958                 ns->rx_crc_errors = pf->stats.crc_errors;
 959                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 960                 ns->rx_length_errors = pf->stats.rx_length_errors;
 961         }
 962 }
 963
 964 /**
 965  * i40e_update_pf_stats - Update the PF statistics counters.
 966  * @pf: the PF to be updated
 967  **/
 968 static void i40e_update_pf_stats(struct i40e_pf *pf)
 969 {
 970         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 971         struct i40e_hw_port_stats *nsd = &pf->stats;
 972         struct i40e_hw *hw = &pf->hw;
 973         u32 val;
 974         int i;
 975
 976         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 977                            I40E_GLPRT_GORCL(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 980         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 981                            I40E_GLPRT_GOTCL(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 984         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->eth.rx_discards,
 987                            &nsd->eth.rx_discards);
 988         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 989                            I40E_GLPRT_UPRCL(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_unicast,
 992                            &nsd->eth.rx_unicast);
 993         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 994                            I40E_GLPRT_MPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_multicast,
 997                            &nsd->eth.rx_multicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 999                            I40E_GLPRT_BPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_broadcast,
1002                            &nsd->eth.rx_broadcast);
1003         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1004                            I40E_GLPRT_UPTCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.tx_unicast,
1007                            &nsd->eth.tx_unicast);
1008         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1009                            I40E_GLPRT_MPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_multicast,
1012                            &nsd->eth.tx_multicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1014                            I40E_GLPRT_BPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_broadcast,
1017                            &nsd->eth.tx_broadcast);
1018
1019         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->tx_dropped_link_down,
1022                            &nsd->tx_dropped_link_down);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->crc_errors, &nsd->crc_errors);
1027
1028         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->illegal_bytes, &nsd->illegal_bytes);
1031
1032         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->mac_local_faults,
1035                            &nsd->mac_local_faults);
1036         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->mac_remote_faults,
1039                            &nsd->mac_remote_faults);
1040
1041         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_length_errors,
1044                            &nsd->rx_length_errors);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->link_xon_rx, &nsd->link_xon_rx);
1049         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xon_tx, &nsd->link_xon_tx);
1052         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1053         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1056
1057         for (i = 0; i < 8; i++) {
1058                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1059                                    pf->stat_offsets_loaded,
1060                                    &osd->priority_xon_rx[i],
1061                                    &nsd->priority_xon_rx[i]);
1062                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1063                                    pf->stat_offsets_loaded,
1064                                    &osd->priority_xon_tx[i],
1065                                    &nsd->priority_xon_tx[i]);
1066                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1067                                    pf->stat_offsets_loaded,
1068                                    &osd->priority_xoff_tx[i],
1069                                    &nsd->priority_xoff_tx[i]);
1070                 i40e_stat_update32(hw,
1071                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xon_2_xoff[i],
1074                                    &nsd->priority_xon_2_xoff[i]);
1075         }
1076
1077         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1078                            I40E_GLPRT_PRC64L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_size_64, &nsd->rx_size_64);
1081         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1082                            I40E_GLPRT_PRC127L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->rx_size_127, &nsd->rx_size_127);
1085         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1086                            I40E_GLPRT_PRC255L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_size_255, &nsd->rx_size_255);
1089         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1090                            I40E_GLPRT_PRC511L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->rx_size_511, &nsd->rx_size_511);
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1094                            I40E_GLPRT_PRC1023L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_1023, &nsd->rx_size_1023);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1098                            I40E_GLPRT_PRC1522L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_1522, &nsd->rx_size_1522);
1101         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1102                            I40E_GLPRT_PRC9522L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->rx_size_big, &nsd->rx_size_big);
1105
1106         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1107                            I40E_GLPRT_PTC64L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->tx_size_64, &nsd->tx_size_64);
1110         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1111                            I40E_GLPRT_PTC127L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_size_127, &nsd->tx_size_127);
1114         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1115                            I40E_GLPRT_PTC255L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->tx_size_255, &nsd->tx_size_255);
1118         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1119                            I40E_GLPRT_PTC511L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->tx_size_511, &nsd->tx_size_511);
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1123                            I40E_GLPRT_PTC1023L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_1023, &nsd->tx_size_1023);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1127                            I40E_GLPRT_PTC1522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_1522, &nsd->tx_size_1522);
1130         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1131                            I40E_GLPRT_PTC9522L(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->tx_size_big, &nsd->tx_size_big);
1134
1135         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1136                            pf->stat_offsets_loaded,
1137                            &osd->rx_undersize, &nsd->rx_undersize);
1138         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1139                            pf->stat_offsets_loaded,
1140                            &osd->rx_fragments, &nsd->rx_fragments);
1141         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1142                            pf->stat_offsets_loaded,
1143                            &osd->rx_oversize, &nsd->rx_oversize);
1144         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1145                            pf->stat_offsets_loaded,
1146                            &osd->rx_jabber, &nsd->rx_jabber);
1147
1148         /* FDIR stats */
1149         i40e_stat_update32(hw,
1150                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1151                            pf->stat_offsets_loaded,
1152                            &osd->fd_atr_match, &nsd->fd_atr_match);
1153         i40e_stat_update32(hw,
1154                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1155                            pf->stat_offsets_loaded,
1156                            &osd->fd_sb_match, &nsd->fd_sb_match);
1157         i40e_stat_update32(hw,
1158                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1159                       pf->stat_offsets_loaded,
1160                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1161
1162         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1163         nsd->tx_lpi_status =
1164                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1165                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1166         nsd->rx_lpi_status =
1167                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1168                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1169         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1170                            pf->stat_offsets_loaded,
1171                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1172         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1173                            pf->stat_offsets_loaded,
1174                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1175
1176         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1177             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1178                 nsd->fd_sb_status = true;
1179         else
1180                 nsd->fd_sb_status = false;
1181
1182         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1183             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1184                 nsd->fd_atr_status = true;
1185         else
1186                 nsd->fd_atr_status = false;
1187
1188         pf->stat_offsets_loaded = true;
1189 }
1190
1191 /**
1192  * i40e_update_stats - Update the various statistics counters.
1193  * @vsi: the VSI to be updated
1194  *
1195  * Update the various stats for this VSI and its related entities.
1196  **/
1197 void i40e_update_stats(struct i40e_vsi *vsi)
1198 {
1199         struct i40e_pf *pf = vsi->back;
1200
1201         if (vsi == pf->vsi[pf->lan_vsi])
1202                 i40e_update_pf_stats(pf);
1203
1204         i40e_update_vsi_stats(vsi);
1205 #ifdef I40E_FCOE
1206         i40e_update_fcoe_stats(vsi);
1207 #endif
1208 }
1209
1210 /**
1211  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1212  * @vsi: the VSI to be searched
1213  * @macaddr: the MAC address
1214  * @vlan: the vlan
1215  * @is_vf: make sure its a VF filter, else doesn't matter
1216  * @is_netdev: make sure its a netdev filter, else doesn't matter
1217  *
1218  * Returns ptr to the filter object or NULL
1219  **/
1220 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1221                                                 u8 *macaddr, s16 vlan,
1222                                                 bool is_vf, bool is_netdev)
1223 {
1224         struct i40e_mac_filter *f;
1225
1226         if (!vsi || !macaddr)
1227                 return NULL;
1228
1229         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1230                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1231                     (vlan == f->vlan)    &&
1232                     (!is_vf || f->is_vf) &&
1233                     (!is_netdev || f->is_netdev))
1234                         return f;
1235         }
1236         return NULL;
1237 }
1238
1239 /**
1240  * i40e_find_mac - Find a mac addr in the macvlan filters list
1241  * @vsi: the VSI to be searched
1242  * @macaddr: the MAC address we are searching for
1243  * @is_vf: make sure its a VF filter, else doesn't matter
1244  * @is_netdev: make sure its a netdev filter, else doesn't matter
1245  *
1246  * Returns the first filter with the provided MAC address or NULL if
1247  * MAC address was not found
1248  **/
1249 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1250                                       bool is_vf, bool is_netdev)
1251 {
1252         struct i40e_mac_filter *f;
1253
1254         if (!vsi || !macaddr)
1255                 return NULL;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1259                     (!is_vf || f->is_vf) &&
1260                     (!is_netdev || f->is_netdev))
1261                         return f;
1262         }
1263         return NULL;
1264 }
1265
1266 /**
1267  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1268  * @vsi: the VSI to be searched
1269  *
1270  * Returns true if VSI is in vlan mode or false otherwise
1271  **/
1272 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1273 {
1274         struct i40e_mac_filter *f;
1275
1276         /* Only -1 for all the filters denotes not in vlan mode
1277          * so we have to go through all the list in order to make sure
1278          */
1279         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1280                 if (f->vlan >= 0 || vsi->info.pvid)
1281                         return true;
1282         }
1283
1284         return false;
1285 }
1286
1287 /**
1288  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1289  * @vsi: the VSI to be searched
1290  * @macaddr: the mac address to be filtered
1291  * @is_vf: true if it is a VF
1292  * @is_netdev: true if it is a netdev
1293  *
1294  * Goes through all the macvlan filters and adds a
1295  * macvlan filter for each unique vlan that already exists
1296  *
1297  * Returns first filter found on success, else NULL
1298  **/
1299 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1300                                              bool is_vf, bool is_netdev)
1301 {
1302         struct i40e_mac_filter *f;
1303
1304         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1305                 if (vsi->info.pvid)
1306                         f->vlan = le16_to_cpu(vsi->info.pvid);
1307                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1308                                       is_vf, is_netdev)) {
1309                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1310                                              is_vf, is_netdev))
1311                                 return NULL;
1312                 }
1313         }
1314
1315         return list_first_entry_or_null(&vsi->mac_filter_list,
1316                                         struct i40e_mac_filter, list);
1317 }
1318
1319 /**
1320  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1321  * @vsi: the VSI to be searched
1322  * @macaddr: the mac address to be removed
1323  * @is_vf: true if it is a VF
1324  * @is_netdev: true if it is a netdev
1325  *
1326  * Removes a given MAC address from a VSI, regardless of VLAN
1327  *
1328  * Returns 0 for success, or error
1329  **/
1330 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1331                           bool is_vf, bool is_netdev)
1332 {
1333         struct i40e_mac_filter *f = NULL;
1334         int changed = 0;
1335
1336         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1337              "Missing mac_filter_list_lock\n");
1338         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1339                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1340                     (is_vf == f->is_vf) &&
1341                     (is_netdev == f->is_netdev)) {
1342                         f->counter--;
1343                         f->changed = true;
1344                         changed = 1;
1345                 }
1346         }
1347         if (changed) {
1348                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1349                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1350                 return 0;
1351         }
1352         return -ENOENT;
1353 }
1354
1355 /**
1356  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1357  * @vsi: the PF Main VSI - inappropriate for any other VSI
1358  * @macaddr: the MAC address
1359  *
1360  * Some older firmware configurations set up a default promiscuous VLAN
1361  * filter that needs to be removed.
1362  **/
1363 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1364 {
1365         struct i40e_aqc_remove_macvlan_element_data element;
1366         struct i40e_pf *pf = vsi->back;
1367         i40e_status ret;
1368
1369         /* Only appropriate for the PF main VSI */
1370         if (vsi->type != I40E_VSI_MAIN)
1371                 return -EINVAL;
1372
1373         memset(&element, 0, sizeof(element));
1374         ether_addr_copy(element.mac_addr, macaddr);
1375         element.vlan_tag = 0;
1376         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1377                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1378         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1379         if (ret)
1380                 return -ENOENT;
1381
1382         return 0;
1383 }
1384
1385 /**
1386  * i40e_add_filter - Add a mac/vlan filter to the VSI
1387  * @vsi: the VSI to be searched
1388  * @macaddr: the MAC address
1389  * @vlan: the vlan
1390  * @is_vf: make sure its a VF filter, else doesn't matter
1391  * @is_netdev: make sure its a netdev filter, else doesn't matter
1392  *
1393  * Returns ptr to the filter object or NULL when no memory available.
1394  *
1395  * NOTE: This function is expected to be called with mac_filter_list_lock
1396  * being held.
1397  **/
1398 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1399                                         u8 *macaddr, s16 vlan,
1400                                         bool is_vf, bool is_netdev)
1401 {
1402         struct i40e_mac_filter *f;
1403
1404         if (!vsi || !macaddr)
1405                 return NULL;
1406
1407         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1408         if (!f) {
1409                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1410                 if (!f)
1411                         goto add_filter_out;
1412
1413                 ether_addr_copy(f->macaddr, macaddr);
1414                 f->vlan = vlan;
1415                 f->changed = true;
1416
1417                 INIT_LIST_HEAD(&f->list);
1418                 list_add(&f->list, &vsi->mac_filter_list);
1419         }
1420
1421         /* increment counter and add a new flag if needed */
1422         if (is_vf) {
1423                 if (!f->is_vf) {
1424                         f->is_vf = true;
1425                         f->counter++;
1426                 }
1427         } else if (is_netdev) {
1428                 if (!f->is_netdev) {
1429                         f->is_netdev = true;
1430                         f->counter++;
1431                 }
1432         } else {
1433                 f->counter++;
1434         }
1435
1436         /* changed tells sync_filters_subtask to
1437          * push the filter down to the firmware
1438          */
1439         if (f->changed) {
1440                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1441                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1442         }
1443
1444 add_filter_out:
1445         return f;
1446 }
1447
1448 /**
1449  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1450  * @vsi: the VSI to be searched
1451  * @macaddr: the MAC address
1452  * @vlan: the vlan
1453  * @is_vf: make sure it's a VF filter, else doesn't matter
1454  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1455  *
1456  * NOTE: This function is expected to be called with mac_filter_list_lock
1457  * being held.
1458  **/
1459 void i40e_del_filter(struct i40e_vsi *vsi,
1460                      u8 *macaddr, s16 vlan,
1461                      bool is_vf, bool is_netdev)
1462 {
1463         struct i40e_mac_filter *f;
1464
1465         if (!vsi || !macaddr)
1466                 return;
1467
1468         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1469         if (!f || f->counter == 0)
1470                 return;
1471
1472         if (is_vf) {
1473                 if (f->is_vf) {
1474                         f->is_vf = false;
1475                         f->counter--;
1476                 }
1477         } else if (is_netdev) {
1478                 if (f->is_netdev) {
1479                         f->is_netdev = false;
1480                         f->counter--;
1481                 }
1482         } else {
1483                 /* make sure we don't remove a filter in use by VF or netdev */
1484                 int min_f = 0;
1485
1486                 min_f += (f->is_vf ? 1 : 0);
1487                 min_f += (f->is_netdev ? 1 : 0);
1488
1489                 if (f->counter > min_f)
1490                         f->counter--;
1491         }
1492
1493         /* counter == 0 tells sync_filters_subtask to
1494          * remove the filter from the firmware's list
1495          */
1496         if (f->counter == 0) {
1497                 f->changed = true;
1498                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1499                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1500         }
1501 }
1502
1503 /**
1504  * i40e_set_mac - NDO callback to set mac address
1505  * @netdev: network interface device structure
1506  * @p: pointer to an address structure
1507  *
1508  * Returns 0 on success, negative on failure
1509  **/
1510 #ifdef I40E_FCOE
1511 int i40e_set_mac(struct net_device *netdev, void *p)
1512 #else
1513 static int i40e_set_mac(struct net_device *netdev, void *p)
1514 #endif
1515 {
1516         struct i40e_netdev_priv *np = netdev_priv(netdev);
1517         struct i40e_vsi *vsi = np->vsi;
1518         struct i40e_pf *pf = vsi->back;
1519         struct i40e_hw *hw = &pf->hw;
1520         struct sockaddr *addr = p;
1521         struct i40e_mac_filter *f;
1522
1523         if (!is_valid_ether_addr(addr->sa_data))
1524                 return -EADDRNOTAVAIL;
1525
1526         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1527                 netdev_info(netdev, "already using mac address %pM\n",
1528                             addr->sa_data);
1529                 return 0;
1530         }
1531
1532         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1533             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1534                 return -EADDRNOTAVAIL;
1535
1536         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1537                 netdev_info(netdev, "returning to hw mac address %pM\n",
1538                             hw->mac.addr);
1539         else
1540                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1541
1542         if (vsi->type == I40E_VSI_MAIN) {
1543                 i40e_status ret;
1544
1545                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1546                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1547                                                 addr->sa_data, NULL);
1548                 if (ret) {
1549                         netdev_info(netdev,
1550                                     "Addr change for Main VSI failed: %d\n",
1551                                     ret);
1552                         return -EADDRNOTAVAIL;
1553                 }
1554         }
1555
1556         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1557                 struct i40e_aqc_remove_macvlan_element_data element;
1558
1559                 memset(&element, 0, sizeof(element));
1560                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1561                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1562                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1563         } else {
1564                 spin_lock_bh(&vsi->mac_filter_list_lock);
1565                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1566                                 false, false);
1567                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1568         }
1569
1570         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1571                 struct i40e_aqc_add_macvlan_element_data element;
1572
1573                 memset(&element, 0, sizeof(element));
1574                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1575                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1576                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1577         } else {
1578                 spin_lock_bh(&vsi->mac_filter_list_lock);
1579                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1580                                     false, false);
1581                 if (f)
1582                         f->is_laa = true;
1583                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1584         }
1585
1586         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1587         /* schedule our worker thread which will take care of
1588          * applying the new filter changes
1589          */
1590         i40e_service_event_schedule(vsi->back);
1591         return 0;
1592 }
1593
1594 /**
1595  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1596  * @vsi: the VSI being setup
1597  * @ctxt: VSI context structure
1598  * @enabled_tc: Enabled TCs bitmap
1599  * @is_add: True if called before Add VSI
1600  *
1601  * Setup VSI queue mapping for enabled traffic classes.
1602  **/
1603 #ifdef I40E_FCOE
1604 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1605                               struct i40e_vsi_context *ctxt,
1606                               u8 enabled_tc,
1607                               bool is_add)
1608 #else
1609 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1610                                      struct i40e_vsi_context *ctxt,
1611                                      u8 enabled_tc,
1612                                      bool is_add)
1613 #endif
1614 {
1615         struct i40e_pf *pf = vsi->back;
1616         u16 sections = 0;
1617         u8 netdev_tc = 0;
1618         u16 numtc = 0;
1619         u16 qcount;
1620         u8 offset;
1621         u16 qmap;
1622         int i;
1623         u16 num_tc_qps = 0;
1624
1625         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1626         offset = 0;
1627
1628         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1629                 /* Find numtc from enabled TC bitmap */
1630                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1631                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1632                                 numtc++;
1633                 }
1634                 if (!numtc) {
1635                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1636                         numtc = 1;
1637                 }
1638         } else {
1639                 /* At least TC0 is enabled in case of non-DCB case */
1640                 numtc = 1;
1641         }
1642
1643         vsi->tc_config.numtc = numtc;
1644         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1645         /* Number of queues per enabled TC */
1646         /* In MFP case we can have a much lower count of MSIx
1647          * vectors available and so we need to lower the used
1648          * q count.
1649          */
1650         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1651                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1652         else
1653                 qcount = vsi->alloc_queue_pairs;
1654         num_tc_qps = qcount / numtc;
1655         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1656
1657         /* Setup queue offset/count for all TCs for given VSI */
1658         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1659                 /* See if the given TC is enabled for the given VSI */
1660                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1661                         /* TC is enabled */
1662                         int pow, num_qps;
1663
1664                         switch (vsi->type) {
1665                         case I40E_VSI_MAIN:
1666                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1667                                 break;
1668 #ifdef I40E_FCOE
1669                         case I40E_VSI_FCOE:
1670                                 qcount = num_tc_qps;
1671                                 break;
1672 #endif
1673                         case I40E_VSI_FDIR:
1674                         case I40E_VSI_SRIOV:
1675                         case I40E_VSI_VMDQ2:
1676                         default:
1677                                 qcount = num_tc_qps;
1678                                 WARN_ON(i != 0);
1679                                 break;
1680                         }
1681                         vsi->tc_config.tc_info[i].qoffset = offset;
1682                         vsi->tc_config.tc_info[i].qcount = qcount;
1683
1684                         /* find the next higher power-of-2 of num queue pairs */
1685                         num_qps = qcount;
1686                         pow = 0;
1687                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1688                                 pow++;
1689                                 num_qps >>= 1;
1690                         }
1691
1692                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1693                         qmap =
1694                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1695                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1696
1697                         offset += qcount;
1698                 } else {
1699                         /* TC is not enabled so set the offset to
1700                          * default queue and allocate one queue
1701                          * for the given TC.
1702                          */
1703                         vsi->tc_config.tc_info[i].qoffset = 0;
1704                         vsi->tc_config.tc_info[i].qcount = 1;
1705                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1706
1707                         qmap = 0;
1708                 }
1709                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1710         }
1711
1712         /* Set actual Tx/Rx queue pairs */
1713         vsi->num_queue_pairs = offset;
1714         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1715                 if (vsi->req_queue_pairs > 0)
1716                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1717                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1718                         vsi->num_queue_pairs = pf->num_lan_msix;
1719         }
1720
1721         /* Scheduler section valid can only be set for ADD VSI */
1722         if (is_add) {
1723                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1724
1725                 ctxt->info.up_enable_bits = enabled_tc;
1726         }
1727         if (vsi->type == I40E_VSI_SRIOV) {
1728                 ctxt->info.mapping_flags |=
1729                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1730                 for (i = 0; i < vsi->num_queue_pairs; i++)
1731                         ctxt->info.queue_mapping[i] =
1732                                                cpu_to_le16(vsi->base_queue + i);
1733         } else {
1734                 ctxt->info.mapping_flags |=
1735                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1736                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1737         }
1738         ctxt->info.valid_sections |= cpu_to_le16(sections);
1739 }
1740
1741 /**
1742  * i40e_set_rx_mode - NDO callback to set the netdev filters
1743  * @netdev: network interface device structure
1744  **/
1745 #ifdef I40E_FCOE
1746 void i40e_set_rx_mode(struct net_device *netdev)
1747 #else
1748 static void i40e_set_rx_mode(struct net_device *netdev)
1749 #endif
1750 {
1751         struct i40e_netdev_priv *np = netdev_priv(netdev);
1752         struct i40e_mac_filter *f, *ftmp;
1753         struct i40e_vsi *vsi = np->vsi;
1754         struct netdev_hw_addr *uca;
1755         struct netdev_hw_addr *mca;
1756         struct netdev_hw_addr *ha;
1757
1758         spin_lock_bh(&vsi->mac_filter_list_lock);
1759
1760         /* add addr if not already in the filter list */
1761         netdev_for_each_uc_addr(uca, netdev) {
1762                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1763                         if (i40e_is_vsi_in_vlan(vsi))
1764                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1765                                                      false, true);
1766                         else
1767                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1768                                                 false, true);
1769                 }
1770         }
1771
1772         netdev_for_each_mc_addr(mca, netdev) {
1773                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1774                         if (i40e_is_vsi_in_vlan(vsi))
1775                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1776                                                      false, true);
1777                         else
1778                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1779                                                 false, true);
1780                 }
1781         }
1782
1783         /* remove filter if not in netdev list */
1784         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1785
1786                 if (!f->is_netdev)
1787                         continue;
1788
1789                 netdev_for_each_mc_addr(mca, netdev)
1790                         if (ether_addr_equal(mca->addr, f->macaddr))
1791                                 goto bottom_of_search_loop;
1792
1793                 netdev_for_each_uc_addr(uca, netdev)
1794                         if (ether_addr_equal(uca->addr, f->macaddr))
1795                                 goto bottom_of_search_loop;
1796
1797                 for_each_dev_addr(netdev, ha)
1798                         if (ether_addr_equal(ha->addr, f->macaddr))
1799                                 goto bottom_of_search_loop;
1800
1801                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1802                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1803
1804 bottom_of_search_loop:
1805                 continue;
1806         }
1807         spin_unlock_bh(&vsi->mac_filter_list_lock);
1808
1809         /* check for other flag changes */
1810         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1811                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1812                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1813         }
1814 }
1815
1816 /**
1817  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1818  * @src: source MAC filter entry to be clones
1819  *
1820  * Returns the pointer to newly cloned MAC filter entry or NULL
1821  * in case of error
1822  **/
1823 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1824                                         struct i40e_mac_filter *src)
1825 {
1826         struct i40e_mac_filter *f;
1827
1828         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1829         if (!f)
1830                 return NULL;
1831         *f = *src;
1832
1833         INIT_LIST_HEAD(&f->list);
1834
1835         return f;
1836 }
1837
1838 /**
1839  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1840  * @vsi: pointer to vsi struct
1841  * @from: Pointer to list which contains MAC filter entries - changes to
1842  *        those entries needs to be undone.
1843  *
1844  * MAC filter entries from list were slated to be removed from device.
1845  **/
1846 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1847                                          struct list_head *from)
1848 {
1849         struct i40e_mac_filter *f, *ftmp;
1850
1851         list_for_each_entry_safe(f, ftmp, from, list) {
1852                 f->changed = true;
1853                 /* Move the element back into MAC filter list*/
1854                 list_move_tail(&f->list, &vsi->mac_filter_list);
1855         }
1856 }
1857
1858 /**
1859  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1860  * @vsi: pointer to vsi struct
1861  *
1862  * MAC filter entries from list were slated to be added from device.
1863  **/
1864 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1865 {
1866         struct i40e_mac_filter *f, *ftmp;
1867
1868         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1869                 if (!f->changed && f->counter)
1870                         f->changed = true;
1871         }
1872 }
1873
1874 /**
1875  * i40e_cleanup_add_list - Deletes the element from add list and release
1876  *                      memory
1877  * @add_list: Pointer to list which contains MAC filter entries
1878  **/
1879 static void i40e_cleanup_add_list(struct list_head *add_list)
1880 {
1881         struct i40e_mac_filter *f, *ftmp;
1882
1883         list_for_each_entry_safe(f, ftmp, add_list, list) {
1884                 list_del(&f->list);
1885                 kfree(f);
1886         }
1887 }
1888
1889 /**
1890  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1891  * @vsi: ptr to the VSI
1892  * @grab_rtnl: whether RTNL needs to be grabbed
1893  *
1894  * Push any outstanding VSI filter changes through the AdminQ.
1895  *
1896  * Returns 0 or error value
1897  **/
1898 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1899 {
1900         struct list_head tmp_del_list, tmp_add_list;
1901         struct i40e_mac_filter *f, *ftmp, *fclone;
1902         bool promisc_forced_on = false;
1903         bool add_happened = false;
1904         int filter_list_len = 0;
1905         u32 changed_flags = 0;
1906         bool err_cond = false;
1907         i40e_status ret = 0;
1908         struct i40e_pf *pf;
1909         int num_add = 0;
1910         int num_del = 0;
1911         int aq_err = 0;
1912         u16 cmd_flags;
1913
1914         /* empty array typed pointers, kcalloc later */
1915         struct i40e_aqc_add_macvlan_element_data *add_list;
1916         struct i40e_aqc_remove_macvlan_element_data *del_list;
1917
1918         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1919                 usleep_range(1000, 2000);
1920         pf = vsi->back;
1921
1922         if (vsi->netdev) {
1923                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1924                 vsi->current_netdev_flags = vsi->netdev->flags;
1925         }
1926
1927         INIT_LIST_HEAD(&tmp_del_list);
1928         INIT_LIST_HEAD(&tmp_add_list);
1929
1930         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1931                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1932
1933                 spin_lock_bh(&vsi->mac_filter_list_lock);
1934                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1935                         if (!f->changed)
1936                                 continue;
1937
1938                         if (f->counter != 0)
1939                                 continue;
1940                         f->changed = false;
1941
1942                         /* Move the element into temporary del_list */
1943                         list_move_tail(&f->list, &tmp_del_list);
1944                 }
1945
1946                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1947                         if (!f->changed)
1948                                 continue;
1949
1950                         if (f->counter == 0)
1951                                 continue;
1952                         f->changed = false;
1953
1954                         /* Clone MAC filter entry and add into temporary list */
1955                         fclone = i40e_mac_filter_entry_clone(f);
1956                         if (!fclone) {
1957                                 err_cond = true;
1958                                 break;
1959                         }
1960                         list_add_tail(&fclone->list, &tmp_add_list);
1961                 }
1962
1963                 /* if failed to clone MAC filter entry - undo */
1964                 if (err_cond) {
1965                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1966                         i40e_undo_add_filter_entries(vsi);
1967                 }
1968                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1969
1970                 if (err_cond)
1971                         i40e_cleanup_add_list(&tmp_add_list);
1972         }
1973
1974         /* Now process 'del_list' outside the lock */
1975         if (!list_empty(&tmp_del_list)) {
1976                 int del_list_size;
1977
1978                 filter_list_len = pf->hw.aq.asq_buf_size /
1979                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1980                 del_list_size = filter_list_len *
1981                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1982                 del_list = kzalloc(del_list_size, GFP_KERNEL);
1983                 if (!del_list) {
1984                         i40e_cleanup_add_list(&tmp_add_list);
1985
1986                         /* Undo VSI's MAC filter entry element updates */
1987                         spin_lock_bh(&vsi->mac_filter_list_lock);
1988                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1989                         i40e_undo_add_filter_entries(vsi);
1990                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1991                         return -ENOMEM;
1992                 }
1993
1994                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1995                         cmd_flags = 0;
1996
1997                         /* add to delete list */
1998                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1999                         del_list[num_del].vlan_tag =
2000                                 cpu_to_le16((u16)(f->vlan ==
2001                                             I40E_VLAN_ANY ? 0 : f->vlan));
2002
2003                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2004                         del_list[num_del].flags = cmd_flags;
2005                         num_del++;
2006
2007                         /* flush a full buffer */
2008                         if (num_del == filter_list_len) {
2009                                 ret = i40e_aq_remove_macvlan(&pf->hw,
2010                                                   vsi->seid, del_list, num_del,
2011                                                   NULL);
2012                                 aq_err = pf->hw.aq.asq_last_status;
2013                                 num_del = 0;
2014                                 memset(del_list, 0, del_list_size);
2015
2016                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
2017                                         dev_err(&pf->pdev->dev,
2018                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
2019                                                 i40e_stat_str(&pf->hw, ret),
2020                                                 i40e_aq_str(&pf->hw, aq_err));
2021                         }
2022                         /* Release memory for MAC filter entries which were
2023                          * synced up with HW.
2024                          */
2025                         list_del(&f->list);
2026                         kfree(f);
2027                 }
2028
2029                 if (num_del) {
2030                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
2031                                                      del_list, num_del, NULL);
2032                         aq_err = pf->hw.aq.asq_last_status;
2033                         num_del = 0;
2034
2035                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
2036                                 dev_info(&pf->pdev->dev,
2037                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2038                                          i40e_stat_str(&pf->hw, ret),
2039                                          i40e_aq_str(&pf->hw, aq_err));
2040                 }
2041
2042                 kfree(del_list);
2043                 del_list = NULL;
2044         }
2045
2046         if (!list_empty(&tmp_add_list)) {
2047                 int add_list_size;
2048
2049                 /* do all the adds now */
2050                 filter_list_len = pf->hw.aq.asq_buf_size /
2051                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2052                 add_list_size = filter_list_len *
2053                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2054                 add_list = kzalloc(add_list_size, GFP_KERNEL);
2055                 if (!add_list) {
2056                         /* Purge element from temporary lists */
2057                         i40e_cleanup_add_list(&tmp_add_list);
2058
2059                         /* Undo add filter entries from VSI MAC filter list */
2060                         spin_lock_bh(&vsi->mac_filter_list_lock);
2061                         i40e_undo_add_filter_entries(vsi);
2062                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2063                         return -ENOMEM;
2064                 }
2065
2066                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2067
2068                         add_happened = true;
2069                         cmd_flags = 0;
2070
2071                         /* add to add array */
2072                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2073                         add_list[num_add].vlan_tag =
2074                                 cpu_to_le16(
2075                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2076                         add_list[num_add].queue_number = 0;
2077
2078                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2079                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2080                         num_add++;
2081
2082                         /* flush a full buffer */
2083                         if (num_add == filter_list_len) {
2084                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2085                                                           add_list, num_add,
2086                                                           NULL);
2087                                 aq_err = pf->hw.aq.asq_last_status;
2088                                 num_add = 0;
2089
2090                                 if (ret)
2091                                         break;
2092                                 memset(add_list, 0, add_list_size);
2093                         }
2094                         /* Entries from tmp_add_list were cloned from MAC
2095                          * filter list, hence clean those cloned entries
2096                          */
2097                         list_del(&f->list);
2098                         kfree(f);
2099                 }
2100
2101                 if (num_add) {
2102                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2103                                                   add_list, num_add, NULL);
2104                         aq_err = pf->hw.aq.asq_last_status;
2105                         num_add = 0;
2106                 }
2107                 kfree(add_list);
2108                 add_list = NULL;
2109
2110                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
2111                         dev_info(&pf->pdev->dev,
2112                                  "add filter failed, err %s aq_err %s\n",
2113                                  i40e_stat_str(&pf->hw, ret),
2114                                  i40e_aq_str(&pf->hw, aq_err));
2115                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2116                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2117                                       &vsi->state)) {
2118                                 promisc_forced_on = true;
2119                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2120                                         &vsi->state);
2121                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2122                         }
2123                 }
2124         }
2125
2126         /* check for changes in promiscuous modes */
2127         if (changed_flags & IFF_ALLMULTI) {
2128                 bool cur_multipromisc;
2129
2130                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2131                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2132                                                             vsi->seid,
2133                                                             cur_multipromisc,
2134                                                             NULL);
2135                 if (ret)
2136                         dev_info(&pf->pdev->dev,
2137                                  "set multi promisc failed, err %s aq_err %s\n",
2138                                  i40e_stat_str(&pf->hw, ret),
2139                                  i40e_aq_str(&pf->hw,
2140                                              pf->hw.aq.asq_last_status));
2141         }
2142         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2143                 bool cur_promisc;
2144
2145                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2146                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2147                                         &vsi->state));
2148                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2149                         /* set defport ON for Main VSI instead of true promisc
2150                          * this way we will get all unicast/multicast and VLAN
2151                          * promisc behavior but will not get VF or VMDq traffic
2152                          * replicated on the Main VSI.
2153                          */
2154                         if (pf->cur_promisc != cur_promisc) {
2155                                 pf->cur_promisc = cur_promisc;
2156                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2157                         }
2158                 } else {
2159                         ret = i40e_aq_set_vsi_unicast_promiscuous(
2160                                                           &vsi->back->hw,
2161                                                           vsi->seid,
2162                                                           cur_promisc, NULL);
2163                         if (ret)
2164                                 dev_info(&pf->pdev->dev,
2165                                          "set unicast promisc failed, err %d, aq_err %d\n",
2166                                          ret, pf->hw.aq.asq_last_status);
2167                         ret = i40e_aq_set_vsi_multicast_promiscuous(
2168                                                           &vsi->back->hw,
2169                                                           vsi->seid,
2170                                                           cur_promisc, NULL);
2171                         if (ret)
2172                                 dev_info(&pf->pdev->dev,
2173                                          "set multicast promisc failed, err %d, aq_err %d\n",
2174                                          ret, pf->hw.aq.asq_last_status);
2175                 }
2176                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2177                                                 vsi->seid,
2178                                                 cur_promisc, NULL);
2179                 if (ret)
2180                         dev_info(&pf->pdev->dev,
2181                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2182                                  i40e_stat_str(&pf->hw, ret),
2183                                  i40e_aq_str(&pf->hw,
2184                                              pf->hw.aq.asq_last_status));
2185         }
2186
2187         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2188         return 0;
2189 }
2190
2191 /**
2192  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2193  * @pf: board private structure
2194  **/
2195 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2196 {
2197         int v;
2198
2199         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2200                 return;
2201         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2202
2203         for (v = 0; v < pf->num_alloc_vsi; v++) {
2204                 if (pf->vsi[v] &&
2205                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2206                         i40e_sync_vsi_filters(pf->vsi[v], true);
2207         }
2208 }
2209
2210 /**
2211  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2212  * @netdev: network interface device structure
2213  * @new_mtu: new value for maximum frame size
2214  *
2215  * Returns 0 on success, negative on failure
2216  **/
2217 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2218 {
2219         struct i40e_netdev_priv *np = netdev_priv(netdev);
2220         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2221         struct i40e_vsi *vsi = np->vsi;
2222
2223         /* MTU < 68 is an error and causes problems on some kernels */
2224         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2225                 return -EINVAL;
2226
2227         netdev_info(netdev, "changing MTU from %d to %d\n",
2228                     netdev->mtu, new_mtu);
2229         netdev->mtu = new_mtu;
2230         if (netif_running(netdev))
2231                 i40e_vsi_reinit_locked(vsi);
2232
2233         return 0;
2234 }
2235
2236 /**
2237  * i40e_ioctl - Access the hwtstamp interface
2238  * @netdev: network interface device structure
2239  * @ifr: interface request data
2240  * @cmd: ioctl command
2241  **/
2242 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2243 {
2244         struct i40e_netdev_priv *np = netdev_priv(netdev);
2245         struct i40e_pf *pf = np->vsi->back;
2246
2247         switch (cmd) {
2248         case SIOCGHWTSTAMP:
2249                 return i40e_ptp_get_ts_config(pf, ifr);
2250         case SIOCSHWTSTAMP:
2251                 return i40e_ptp_set_ts_config(pf, ifr);
2252         default:
2253                 return -EOPNOTSUPP;
2254         }
2255 }
2256
2257 /**
2258  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2259  * @vsi: the vsi being adjusted
2260  **/
2261 void i40e_vlan_stripping_enable(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_MODE_MASK) == 0))
2269                 return;  /* already enabled */
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2273                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2274
2275         ctxt.seid = vsi->seid;
2276         ctxt.info = vsi->info;
2277         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2278         if (ret) {
2279                 dev_info(&vsi->back->pdev->dev,
2280                          "update vlan stripping failed, err %s aq_err %s\n",
2281                          i40e_stat_str(&vsi->back->hw, ret),
2282                          i40e_aq_str(&vsi->back->hw,
2283                                      vsi->back->hw.aq.asq_last_status));
2284         }
2285 }
2286
2287 /**
2288  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2289  * @vsi: the vsi being adjusted
2290  **/
2291 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2292 {
2293         struct i40e_vsi_context ctxt;
2294         i40e_status ret;
2295
2296         if ((vsi->info.valid_sections &
2297              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2298             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2299              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2300                 return;  /* already disabled */
2301
2302         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2303         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2304                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2305
2306         ctxt.seid = vsi->seid;
2307         ctxt.info = vsi->info;
2308         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2309         if (ret) {
2310                 dev_info(&vsi->back->pdev->dev,
2311                          "update vlan stripping failed, err %s aq_err %s\n",
2312                          i40e_stat_str(&vsi->back->hw, ret),
2313                          i40e_aq_str(&vsi->back->hw,
2314                                      vsi->back->hw.aq.asq_last_status));
2315         }
2316 }
2317
2318 /**
2319  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2320  * @netdev: network interface to be adjusted
2321  * @features: netdev features to test if VLAN offload is enabled or not
2322  **/
2323 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2324 {
2325         struct i40e_netdev_priv *np = netdev_priv(netdev);
2326         struct i40e_vsi *vsi = np->vsi;
2327
2328         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2329                 i40e_vlan_stripping_enable(vsi);
2330         else
2331                 i40e_vlan_stripping_disable(vsi);
2332 }
2333
2334 /**
2335  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2336  * @vsi: the vsi being configured
2337  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2338  **/
2339 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2340 {
2341         struct i40e_mac_filter *f, *add_f;
2342         bool is_netdev, is_vf;
2343
2344         is_vf = (vsi->type == I40E_VSI_SRIOV);
2345         is_netdev = !!(vsi->netdev);
2346
2347         /* Locked once because all functions invoked below iterates list*/
2348         spin_lock_bh(&vsi->mac_filter_list_lock);
2349
2350         if (is_netdev) {
2351                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2352                                         is_vf, is_netdev);
2353                 if (!add_f) {
2354                         dev_info(&vsi->back->pdev->dev,
2355                                  "Could not add vlan filter %d for %pM\n",
2356                                  vid, vsi->netdev->dev_addr);
2357                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2358                         return -ENOMEM;
2359                 }
2360         }
2361
2362         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2363                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2364                 if (!add_f) {
2365                         dev_info(&vsi->back->pdev->dev,
2366                                  "Could not add vlan filter %d for %pM\n",
2367                                  vid, f->macaddr);
2368                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2369                         return -ENOMEM;
2370                 }
2371         }
2372
2373         /* Now if we add a vlan tag, make sure to check if it is the first
2374          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2375          * with 0, so we now accept untagged and specified tagged traffic
2376          * (and not any taged and untagged)
2377          */
2378         if (vid > 0) {
2379                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2380                                                   I40E_VLAN_ANY,
2381                                                   is_vf, is_netdev)) {
2382                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2383                                         I40E_VLAN_ANY, is_vf, is_netdev);
2384                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2385                                                 is_vf, is_netdev);
2386                         if (!add_f) {
2387                                 dev_info(&vsi->back->pdev->dev,
2388                                          "Could not add filter 0 for %pM\n",
2389                                          vsi->netdev->dev_addr);
2390                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2391                                 return -ENOMEM;
2392                         }
2393                 }
2394         }
2395
2396         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2397         if (vid > 0 && !vsi->info.pvid) {
2398                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2399                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2400                                               is_vf, is_netdev))
2401                                 continue;
2402                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2403                                         is_vf, is_netdev);
2404                         add_f = i40e_add_filter(vsi, f->macaddr,
2405                                                 0, is_vf, is_netdev);
2406                         if (!add_f) {
2407                                 dev_info(&vsi->back->pdev->dev,
2408                                          "Could not add filter 0 for %pM\n",
2409                                         f->macaddr);
2410                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2411                                 return -ENOMEM;
2412                         }
2413                 }
2414         }
2415
2416         spin_unlock_bh(&vsi->mac_filter_list_lock);
2417
2418         /* schedule our worker thread which will take care of
2419          * applying the new filter changes
2420          */
2421         i40e_service_event_schedule(vsi->back);
2422         return 0;
2423 }
2424
2425 /**
2426  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2427  * @vsi: the vsi being configured
2428  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2429  *
2430  * Return: 0 on success or negative otherwise
2431  **/
2432 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2433 {
2434         struct net_device *netdev = vsi->netdev;
2435         struct i40e_mac_filter *f, *add_f;
2436         bool is_vf, is_netdev;
2437         int filter_count = 0;
2438
2439         is_vf = (vsi->type == I40E_VSI_SRIOV);
2440         is_netdev = !!(netdev);
2441
2442         /* Locked once because all functions invoked below iterates list */
2443         spin_lock_bh(&vsi->mac_filter_list_lock);
2444
2445         if (is_netdev)
2446                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2447
2448         list_for_each_entry(f, &vsi->mac_filter_list, list)
2449                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2450
2451         /* go through all the filters for this VSI and if there is only
2452          * vid == 0 it means there are no other filters, so vid 0 must
2453          * be replaced with -1. This signifies that we should from now
2454          * on accept any traffic (with any tag present, or untagged)
2455          */
2456         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2457                 if (is_netdev) {
2458                         if (f->vlan &&
2459                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2460                                 filter_count++;
2461                 }
2462
2463                 if (f->vlan)
2464                         filter_count++;
2465         }
2466
2467         if (!filter_count && is_netdev) {
2468                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2469                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2470                                     is_vf, is_netdev);
2471                 if (!f) {
2472                         dev_info(&vsi->back->pdev->dev,
2473                                  "Could not add filter %d for %pM\n",
2474                                  I40E_VLAN_ANY, netdev->dev_addr);
2475                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2476                         return -ENOMEM;
2477                 }
2478         }
2479
2480         if (!filter_count) {
2481                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2482                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2483                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2484                                                 is_vf, is_netdev);
2485                         if (!add_f) {
2486                                 dev_info(&vsi->back->pdev->dev,
2487                                          "Could not add filter %d for %pM\n",
2488                                          I40E_VLAN_ANY, f->macaddr);
2489                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2490                                 return -ENOMEM;
2491                         }
2492                 }
2493         }
2494
2495         spin_unlock_bh(&vsi->mac_filter_list_lock);
2496
2497         /* schedule our worker thread which will take care of
2498          * applying the new filter changes
2499          */
2500         i40e_service_event_schedule(vsi->back);
2501         return 0;
2502 }
2503
2504 /**
2505  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2506  * @netdev: network interface to be adjusted
2507  * @vid: vlan id to be added
2508  *
2509  * net_device_ops implementation for adding vlan ids
2510  **/
2511 #ifdef I40E_FCOE
2512 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2513                          __always_unused __be16 proto, u16 vid)
2514 #else
2515 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2516                                 __always_unused __be16 proto, u16 vid)
2517 #endif
2518 {
2519         struct i40e_netdev_priv *np = netdev_priv(netdev);
2520         struct i40e_vsi *vsi = np->vsi;
2521         int ret = 0;
2522
2523         if (vid > 4095)
2524                 return -EINVAL;
2525
2526         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2527
2528         /* If the network stack called us with vid = 0 then
2529          * it is asking to receive priority tagged packets with
2530          * vlan id 0.  Our HW receives them by default when configured
2531          * to receive untagged packets so there is no need to add an
2532          * extra filter for vlan 0 tagged packets.
2533          */
2534         if (vid)
2535                 ret = i40e_vsi_add_vlan(vsi, vid);
2536
2537         if (!ret && (vid < VLAN_N_VID))
2538                 set_bit(vid, vsi->active_vlans);
2539
2540         return ret;
2541 }
2542
2543 /**
2544  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2545  * @netdev: network interface to be adjusted
2546  * @vid: vlan id to be removed
2547  *
2548  * net_device_ops implementation for removing vlan ids
2549  **/
2550 #ifdef I40E_FCOE
2551 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2552                           __always_unused __be16 proto, u16 vid)
2553 #else
2554 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2555                                  __always_unused __be16 proto, u16 vid)
2556 #endif
2557 {
2558         struct i40e_netdev_priv *np = netdev_priv(netdev);
2559         struct i40e_vsi *vsi = np->vsi;
2560
2561         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2562
2563         /* return code is ignored as there is nothing a user
2564          * can do about failure to remove and a log message was
2565          * already printed from the other function
2566          */
2567         i40e_vsi_kill_vlan(vsi, vid);
2568
2569         clear_bit(vid, vsi->active_vlans);
2570
2571         return 0;
2572 }
2573
2574 /**
2575  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2576  * @vsi: the vsi being brought back up
2577  **/
2578 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2579 {
2580         u16 vid;
2581
2582         if (!vsi->netdev)
2583                 return;
2584
2585         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2586
2587         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2588                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2589                                      vid);
2590 }
2591
2592 /**
2593  * i40e_vsi_add_pvid - Add pvid for the VSI
2594  * @vsi: the vsi being adjusted
2595  * @vid: the vlan id to set as a PVID
2596  **/
2597 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2598 {
2599         struct i40e_vsi_context ctxt;
2600         i40e_status ret;
2601
2602         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2603         vsi->info.pvid = cpu_to_le16(vid);
2604         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2605                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2606                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2607
2608         ctxt.seid = vsi->seid;
2609         ctxt.info = vsi->info;
2610         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2611         if (ret) {
2612                 dev_info(&vsi->back->pdev->dev,
2613                          "add pvid failed, err %s aq_err %s\n",
2614                          i40e_stat_str(&vsi->back->hw, ret),
2615                          i40e_aq_str(&vsi->back->hw,
2616                                      vsi->back->hw.aq.asq_last_status));
2617                 return -ENOENT;
2618         }
2619
2620         return 0;
2621 }
2622
2623 /**
2624  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2625  * @vsi: the vsi being adjusted
2626  *
2627  * Just use the vlan_rx_register() service to put it back to normal
2628  **/
2629 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2630 {
2631         i40e_vlan_stripping_disable(vsi);
2632
2633         vsi->info.pvid = 0;
2634 }
2635
2636 /**
2637  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2638  * @vsi: ptr to the VSI
2639  *
2640  * If this function returns with an error, then it's possible one or
2641  * more of the rings is populated (while the rest are not).  It is the
2642  * callers duty to clean those orphaned rings.
2643  *
2644  * Return 0 on success, negative on failure
2645  **/
2646 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2647 {
2648         int i, err = 0;
2649
2650         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2651                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2652
2653         return err;
2654 }
2655
2656 /**
2657  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2658  * @vsi: ptr to the VSI
2659  *
2660  * Free VSI's transmit software resources
2661  **/
2662 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2663 {
2664         int i;
2665
2666         if (!vsi->tx_rings)
2667                 return;
2668
2669         for (i = 0; i < vsi->num_queue_pairs; i++)
2670                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2671                         i40e_free_tx_resources(vsi->tx_rings[i]);
2672 }
2673
2674 /**
2675  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2676  * @vsi: ptr to the VSI
2677  *
2678  * If this function returns with an error, then it's possible one or
2679  * more of the rings is populated (while the rest are not).  It is the
2680  * callers duty to clean those orphaned rings.
2681  *
2682  * Return 0 on success, negative on failure
2683  **/
2684 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2685 {
2686         int i, err = 0;
2687
2688         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2689                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2690 #ifdef I40E_FCOE
2691         i40e_fcoe_setup_ddp_resources(vsi);
2692 #endif
2693         return err;
2694 }
2695
2696 /**
2697  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2698  * @vsi: ptr to the VSI
2699  *
2700  * Free all receive software resources
2701  **/
2702 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2703 {
2704         int i;
2705
2706         if (!vsi->rx_rings)
2707                 return;
2708
2709         for (i = 0; i < vsi->num_queue_pairs; i++)
2710                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2711                         i40e_free_rx_resources(vsi->rx_rings[i]);
2712 #ifdef I40E_FCOE
2713         i40e_fcoe_free_ddp_resources(vsi);
2714 #endif
2715 }
2716
2717 /**
2718  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2719  * @ring: The Tx ring to configure
2720  *
2721  * This enables/disables XPS for a given Tx descriptor ring
2722  * based on the TCs enabled for the VSI that ring belongs to.
2723  **/
2724 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2725 {
2726         struct i40e_vsi *vsi = ring->vsi;
2727         cpumask_var_t mask;
2728
2729         if (!ring->q_vector || !ring->netdev)
2730                 return;
2731
2732         /* Single TC mode enable XPS */
2733         if (vsi->tc_config.numtc <= 1) {
2734                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2735                         netif_set_xps_queue(ring->netdev,
2736                                             &ring->q_vector->affinity_mask,
2737                                             ring->queue_index);
2738         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2739                 /* Disable XPS to allow selection based on TC */
2740                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2741                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2742                 free_cpumask_var(mask);
2743         }
2744
2745         /* schedule our worker thread which will take care of
2746          * applying the new filter changes
2747          */
2748         i40e_service_event_schedule(vsi->back);
2749 }
2750
2751 /**
2752  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2753  * @ring: The Tx ring to configure
2754  *
2755  * Configure the Tx descriptor ring in the HMC context.
2756  **/
2757 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2758 {
2759         struct i40e_vsi *vsi = ring->vsi;
2760         u16 pf_q = vsi->base_queue + ring->queue_index;
2761         struct i40e_hw *hw = &vsi->back->hw;
2762         struct i40e_hmc_obj_txq tx_ctx;
2763         i40e_status err = 0;
2764         u32 qtx_ctl = 0;
2765
2766         /* some ATR related tx ring init */
2767         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2768                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2769                 ring->atr_count = 0;
2770         } else {
2771                 ring->atr_sample_rate = 0;
2772         }
2773
2774         /* configure XPS */
2775         i40e_config_xps_tx_ring(ring);
2776
2777         /* clear the context structure first */
2778         memset(&tx_ctx, 0, sizeof(tx_ctx));
2779
2780         tx_ctx.new_context = 1;
2781         tx_ctx.base = (ring->dma / 128);
2782         tx_ctx.qlen = ring->count;
2783         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2784                                                I40E_FLAG_FD_ATR_ENABLED));
2785 #ifdef I40E_FCOE
2786         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2787 #endif
2788         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2789         /* FDIR VSI tx ring can still use RS bit and writebacks */
2790         if (vsi->type != I40E_VSI_FDIR)
2791                 tx_ctx.head_wb_ena = 1;
2792         tx_ctx.head_wb_addr = ring->dma +
2793                               (ring->count * sizeof(struct i40e_tx_desc));
2794
2795         /* As part of VSI creation/update, FW allocates certain
2796          * Tx arbitration queue sets for each TC enabled for
2797          * the VSI. The FW returns the handles to these queue
2798          * sets as part of the response buffer to Add VSI,
2799          * Update VSI, etc. AQ commands. It is expected that
2800          * these queue set handles be associated with the Tx
2801          * queues by the driver as part of the TX queue context
2802          * initialization. This has to be done regardless of
2803          * DCB as by default everything is mapped to TC0.
2804          */
2805         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2806         tx_ctx.rdylist_act = 0;
2807
2808         /* clear the context in the HMC */
2809         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2810         if (err) {
2811                 dev_info(&vsi->back->pdev->dev,
2812                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2813                          ring->queue_index, pf_q, err);
2814                 return -ENOMEM;
2815         }
2816
2817         /* set the context in the HMC */
2818         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2819         if (err) {
2820                 dev_info(&vsi->back->pdev->dev,
2821                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2822                          ring->queue_index, pf_q, err);
2823                 return -ENOMEM;
2824         }
2825
2826         /* Now associate this queue with this PCI function */
2827         if (vsi->type == I40E_VSI_VMDQ2) {
2828                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2829                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2830                            I40E_QTX_CTL_VFVM_INDX_MASK;
2831         } else {
2832                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2833         }
2834
2835         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2836                     I40E_QTX_CTL_PF_INDX_MASK);
2837         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2838         i40e_flush(hw);
2839
2840         /* cache tail off for easier writes later */
2841         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2842
2843         return 0;
2844 }
2845
2846 /**
2847  * i40e_configure_rx_ring - Configure a receive ring context
2848  * @ring: The Rx ring to configure
2849  *
2850  * Configure the Rx descriptor ring in the HMC context.
2851  **/
2852 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2853 {
2854         struct i40e_vsi *vsi = ring->vsi;
2855         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2856         u16 pf_q = vsi->base_queue + ring->queue_index;
2857         struct i40e_hw *hw = &vsi->back->hw;
2858         struct i40e_hmc_obj_rxq rx_ctx;
2859         i40e_status err = 0;
2860
2861         ring->state = 0;
2862
2863         /* clear the context structure first */
2864         memset(&rx_ctx, 0, sizeof(rx_ctx));
2865
2866         ring->rx_buf_len = vsi->rx_buf_len;
2867         ring->rx_hdr_len = vsi->rx_hdr_len;
2868
2869         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2870         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2871
2872         rx_ctx.base = (ring->dma / 128);
2873         rx_ctx.qlen = ring->count;
2874
2875         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2876                 set_ring_16byte_desc_enabled(ring);
2877                 rx_ctx.dsize = 0;
2878         } else {
2879                 rx_ctx.dsize = 1;
2880         }
2881
2882         rx_ctx.dtype = vsi->dtype;
2883         if (vsi->dtype) {
2884                 set_ring_ps_enabled(ring);
2885                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2886                                   I40E_RX_SPLIT_IP      |
2887                                   I40E_RX_SPLIT_TCP_UDP |
2888                                   I40E_RX_SPLIT_SCTP;
2889         } else {
2890                 rx_ctx.hsplit_0 = 0;
2891         }
2892
2893         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2894                                   (chain_len * ring->rx_buf_len));
2895         if (hw->revision_id == 0)
2896                 rx_ctx.lrxqthresh = 0;
2897         else
2898                 rx_ctx.lrxqthresh = 2;
2899         rx_ctx.crcstrip = 1;
2900         rx_ctx.l2tsel = 1;
2901         /* this controls whether VLAN is stripped from inner headers */
2902         rx_ctx.showiv = 0;
2903 #ifdef I40E_FCOE
2904         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2905 #endif
2906         /* set the prefena field to 1 because the manual says to */
2907         rx_ctx.prefena = 1;
2908
2909         /* clear the context in the HMC */
2910         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2911         if (err) {
2912                 dev_info(&vsi->back->pdev->dev,
2913                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2914                          ring->queue_index, pf_q, err);
2915                 return -ENOMEM;
2916         }
2917
2918         /* set the context in the HMC */
2919         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2920         if (err) {
2921                 dev_info(&vsi->back->pdev->dev,
2922                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2923                          ring->queue_index, pf_q, err);
2924                 return -ENOMEM;
2925         }
2926
2927         /* cache tail for quicker writes, and clear the reg before use */
2928         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2929         writel(0, ring->tail);
2930
2931         if (ring_is_ps_enabled(ring)) {
2932                 i40e_alloc_rx_headers(ring);
2933                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2934         } else {
2935                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2936         }
2937
2938         return 0;
2939 }
2940
2941 /**
2942  * i40e_vsi_configure_tx - Configure the VSI for Tx
2943  * @vsi: VSI structure describing this set of rings and resources
2944  *
2945  * Configure the Tx VSI for operation.
2946  **/
2947 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2948 {
2949         int err = 0;
2950         u16 i;
2951
2952         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2953                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2954
2955         return err;
2956 }
2957
2958 /**
2959  * i40e_vsi_configure_rx - Configure the VSI for Rx
2960  * @vsi: the VSI being configured
2961  *
2962  * Configure the Rx VSI for operation.
2963  **/
2964 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2965 {
2966         int err = 0;
2967         u16 i;
2968
2969         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2970                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2971                                + ETH_FCS_LEN + VLAN_HLEN;
2972         else
2973                 vsi->max_frame = I40E_RXBUFFER_2048;
2974
2975         /* figure out correct receive buffer length */
2976         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2977                                     I40E_FLAG_RX_PS_ENABLED)) {
2978         case I40E_FLAG_RX_1BUF_ENABLED:
2979                 vsi->rx_hdr_len = 0;
2980                 vsi->rx_buf_len = vsi->max_frame;
2981                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2982                 break;
2983         case I40E_FLAG_RX_PS_ENABLED:
2984                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2985                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2986                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2987                 break;
2988         default:
2989                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2990                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2991                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2992                 break;
2993         }
2994
2995 #ifdef I40E_FCOE
2996         /* setup rx buffer for FCoE */
2997         if ((vsi->type == I40E_VSI_FCOE) &&
2998             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2999                 vsi->rx_hdr_len = 0;
3000                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3001                 vsi->max_frame = I40E_RXBUFFER_3072;
3002                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
3003         }
3004
3005 #endif /* I40E_FCOE */
3006         /* round up for the chip's needs */
3007         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
3008                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
3009         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3010                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3011
3012         /* set up individual rings */
3013         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3014                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3015
3016         return err;
3017 }
3018
3019 /**
3020  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3021  * @vsi: ptr to the VSI
3022  **/
3023 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3024 {
3025         struct i40e_ring *tx_ring, *rx_ring;
3026         u16 qoffset, qcount;
3027         int i, n;
3028
3029         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3030                 /* Reset the TC information */
3031                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3032                         rx_ring = vsi->rx_rings[i];
3033                         tx_ring = vsi->tx_rings[i];
3034                         rx_ring->dcb_tc = 0;
3035                         tx_ring->dcb_tc = 0;
3036                 }
3037         }
3038
3039         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3040                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3041                         continue;
3042
3043                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3044                 qcount = vsi->tc_config.tc_info[n].qcount;
3045                 for (i = qoffset; i < (qoffset + qcount); i++) {
3046                         rx_ring = vsi->rx_rings[i];
3047                         tx_ring = vsi->tx_rings[i];
3048                         rx_ring->dcb_tc = n;
3049                         tx_ring->dcb_tc = n;
3050                 }
3051         }
3052 }
3053
3054 /**
3055  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3056  * @vsi: ptr to the VSI
3057  **/
3058 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3059 {
3060         if (vsi->netdev)
3061                 i40e_set_rx_mode(vsi->netdev);
3062 }
3063
3064 /**
3065  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3066  * @vsi: Pointer to the targeted VSI
3067  *
3068  * This function replays the hlist on the hw where all the SB Flow Director
3069  * filters were saved.
3070  **/
3071 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3072 {
3073         struct i40e_fdir_filter *filter;
3074         struct i40e_pf *pf = vsi->back;
3075         struct hlist_node *node;
3076
3077         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3078                 return;
3079
3080         hlist_for_each_entry_safe(filter, node,
3081                                   &pf->fdir_filter_list, fdir_node) {
3082                 i40e_add_del_fdir(vsi, filter, true);
3083         }
3084 }
3085
3086 /**
3087  * i40e_vsi_configure - Set up the VSI for action
3088  * @vsi: the VSI being configured
3089  **/
3090 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3091 {
3092         int err;
3093
3094         i40e_set_vsi_rx_mode(vsi);
3095         i40e_restore_vlan(vsi);
3096         i40e_vsi_config_dcb_rings(vsi);
3097         err = i40e_vsi_configure_tx(vsi);
3098         if (!err)
3099                 err = i40e_vsi_configure_rx(vsi);
3100
3101         return err;
3102 }
3103
3104 /**
3105  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3106  * @vsi: the VSI being configured
3107  **/
3108 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3109 {
3110         struct i40e_pf *pf = vsi->back;
3111         struct i40e_hw *hw = &pf->hw;
3112         u16 vector;
3113         int i, q;
3114         u32 qp;
3115
3116         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3117          * and PFINT_LNKLSTn registers, e.g.:
3118          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3119          */
3120         qp = vsi->base_queue;
3121         vector = vsi->base_vector;
3122         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3123                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3124
3125                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3126                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3127                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3128                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3129                      q_vector->rx.itr);
3130                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3131                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3132                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3133                      q_vector->tx.itr);
3134                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3135                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3136
3137                 /* Linked list for the queuepairs assigned to this vector */
3138                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3139                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3140                         u32 val;
3141
3142                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3143                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3144                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3145                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3146                               (I40E_QUEUE_TYPE_TX
3147                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3148
3149                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3150
3151                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3152                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3153                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3154                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3155                               (I40E_QUEUE_TYPE_RX
3156                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3157
3158                         /* Terminate the linked list */
3159                         if (q == (q_vector->num_ringpairs - 1))
3160                                 val |= (I40E_QUEUE_END_OF_LIST
3161                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3162
3163                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3164                         qp++;
3165                 }
3166         }
3167
3168         i40e_flush(hw);
3169 }
3170
3171 /**
3172  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3173  * @hw: ptr to the hardware info
3174  **/
3175 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3176 {
3177         struct i40e_hw *hw = &pf->hw;
3178         u32 val;
3179
3180         /* clear things first */
3181         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3182         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3183
3184         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3185               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3186               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3187               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3188               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3189               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3190               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3191               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3192
3193         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3194                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3195
3196         if (pf->flags & I40E_FLAG_PTP)
3197                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3198
3199         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3200
3201         /* SW_ITR_IDX = 0, but don't change INTENA */
3202         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3203                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3204
3205         /* OTHER_ITR_IDX = 0 */
3206         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3207 }
3208
3209 /**
3210  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3211  * @vsi: the VSI being configured
3212  **/
3213 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3214 {
3215         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3216         struct i40e_pf *pf = vsi->back;
3217         struct i40e_hw *hw = &pf->hw;
3218         u32 val;
3219
3220         /* set the ITR configuration */
3221         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3222         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3223         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3224         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3225         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3226         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3227         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3228
3229         i40e_enable_misc_int_causes(pf);
3230
3231         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3232         wr32(hw, I40E_PFINT_LNKLST0, 0);
3233
3234         /* Associate the queue pair to the vector and enable the queue int */
3235         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3236               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3237               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3238
3239         wr32(hw, I40E_QINT_RQCTL(0), val);
3240
3241         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3242               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3243               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3244
3245         wr32(hw, I40E_QINT_TQCTL(0), val);
3246         i40e_flush(hw);
3247 }
3248
3249 /**
3250  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3251  * @pf: board private structure
3252  **/
3253 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3254 {
3255         struct i40e_hw *hw = &pf->hw;
3256
3257         wr32(hw, I40E_PFINT_DYN_CTL0,
3258              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3259         i40e_flush(hw);
3260 }
3261
3262 /**
3263  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3264  * @pf: board private structure
3265  **/
3266 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3267 {
3268         struct i40e_hw *hw = &pf->hw;
3269         u32 val;
3270
3271         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3272               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3273               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3274
3275         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3276         i40e_flush(hw);
3277 }
3278
3279 /**
3280  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3281  * @vsi: pointer to a vsi
3282  * @vector: disable a particular Hw Interrupt vector
3283  **/
3284 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3285 {
3286         struct i40e_pf *pf = vsi->back;
3287         struct i40e_hw *hw = &pf->hw;
3288         u32 val;
3289
3290         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3291         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3292         i40e_flush(hw);
3293 }
3294
3295 /**
3296  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3297  * @irq: interrupt number
3298  * @data: pointer to a q_vector
3299  **/
3300 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3301 {
3302         struct i40e_q_vector *q_vector = data;
3303
3304         if (!q_vector->tx.ring && !q_vector->rx.ring)
3305                 return IRQ_HANDLED;
3306
3307         napi_schedule_irqoff(&q_vector->napi);
3308
3309         return IRQ_HANDLED;
3310 }
3311
3312 /**
3313  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3314  * @vsi: the VSI being configured
3315  * @basename: name for the vector
3316  *
3317  * Allocates MSI-X vectors and requests interrupts from the kernel.
3318  **/
3319 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3320 {
3321         int q_vectors = vsi->num_q_vectors;
3322         struct i40e_pf *pf = vsi->back;
3323         int base = vsi->base_vector;
3324         int rx_int_idx = 0;
3325         int tx_int_idx = 0;
3326         int vector, err;
3327
3328         for (vector = 0; vector < q_vectors; vector++) {
3329                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3330
3331                 if (q_vector->tx.ring && q_vector->rx.ring) {
3332                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3333                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3334                         tx_int_idx++;
3335                 } else if (q_vector->rx.ring) {
3336                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3337                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3338                 } else if (q_vector->tx.ring) {
3339                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3340                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3341                 } else {
3342                         /* skip this unused q_vector */
3343                         continue;
3344                 }
3345                 err = request_irq(pf->msix_entries[base + vector].vector,
3346                                   vsi->irq_handler,
3347                                   0,
3348                                   q_vector->name,
3349                                   q_vector);
3350                 if (err) {
3351                         dev_info(&pf->pdev->dev,
3352                                  "MSIX request_irq failed, error: %d\n", err);
3353                         goto free_queue_irqs;
3354                 }
3355                 /* assign the mask for this irq */
3356                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3357                                       &q_vector->affinity_mask);
3358         }
3359
3360         vsi->irqs_ready = true;
3361         return 0;
3362
3363 free_queue_irqs:
3364         while (vector) {
3365                 vector--;
3366                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3367                                       NULL);
3368                 free_irq(pf->msix_entries[base + vector].vector,
3369                          &(vsi->q_vectors[vector]));
3370         }
3371         return err;
3372 }
3373
3374 /**
3375  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3376  * @vsi: the VSI being un-configured
3377  **/
3378 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3379 {
3380         struct i40e_pf *pf = vsi->back;
3381         struct i40e_hw *hw = &pf->hw;
3382         int base = vsi->base_vector;
3383         int i;
3384
3385         for (i = 0; i < vsi->num_queue_pairs; i++) {
3386                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3387                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3388         }
3389
3390         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3391                 for (i = vsi->base_vector;
3392                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3393                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3394
3395                 i40e_flush(hw);
3396                 for (i = 0; i < vsi->num_q_vectors; i++)
3397                         synchronize_irq(pf->msix_entries[i + base].vector);
3398         } else {
3399                 /* Legacy and MSI mode - this stops all interrupt handling */
3400                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3401                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3402                 i40e_flush(hw);
3403                 synchronize_irq(pf->pdev->irq);
3404         }
3405 }
3406
3407 /**
3408  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3409  * @vsi: the VSI being configured
3410  **/
3411 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3412 {
3413         struct i40e_pf *pf = vsi->back;
3414         int i;
3415
3416         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3417                 for (i = 0; i < vsi->num_q_vectors; i++)
3418                         i40e_irq_dynamic_enable(vsi, i);
3419         } else {
3420                 i40e_irq_dynamic_enable_icr0(pf);
3421         }
3422
3423         i40e_flush(&pf->hw);
3424         return 0;
3425 }
3426
3427 /**
3428  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3429  * @pf: board private structure
3430  **/
3431 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3432 {
3433         /* Disable ICR 0 */
3434         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3435         i40e_flush(&pf->hw);
3436 }
3437
3438 /**
3439  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3440  * @irq: interrupt number
3441  * @data: pointer to a q_vector
3442  *
3443  * This is the handler used for all MSI/Legacy interrupts, and deals
3444  * with both queue and non-queue interrupts.  This is also used in
3445  * MSIX mode to handle the non-queue interrupts.
3446  **/
3447 static irqreturn_t i40e_intr(int irq, void *data)
3448 {
3449         struct i40e_pf *pf = (struct i40e_pf *)data;
3450         struct i40e_hw *hw = &pf->hw;
3451         irqreturn_t ret = IRQ_NONE;
3452         u32 icr0, icr0_remaining;
3453         u32 val, ena_mask;
3454
3455         icr0 = rd32(hw, I40E_PFINT_ICR0);
3456         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3457
3458         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3459         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3460                 goto enable_intr;
3461
3462         /* if interrupt but no bits showing, must be SWINT */
3463         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3464             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3465                 pf->sw_int_count++;
3466
3467         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3468             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3469                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3470                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3471                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3472         }
3473
3474         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3475         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3476                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3477                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3478
3479                 /* temporarily disable queue cause for NAPI processing */
3480                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3481
3482                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3483                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3484
3485                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3486                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3487                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3488
3489                 if (!test_bit(__I40E_DOWN, &pf->state))
3490                         napi_schedule_irqoff(&q_vector->napi);
3491         }
3492
3493         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3494                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3495                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3496         }
3497
3498         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3499                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3500                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3501         }
3502
3503         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3504                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3505                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3506         }
3507
3508         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3509                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3510                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3511                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3512                 val = rd32(hw, I40E_GLGEN_RSTAT);
3513                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3514                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3515                 if (val == I40E_RESET_CORER) {
3516                         pf->corer_count++;
3517                 } else if (val == I40E_RESET_GLOBR) {
3518                         pf->globr_count++;
3519                 } else if (val == I40E_RESET_EMPR) {
3520                         pf->empr_count++;
3521                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3522                 }
3523         }
3524
3525         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3526                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3527                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3528                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3529                          rd32(hw, I40E_PFHMC_ERRORINFO),
3530                          rd32(hw, I40E_PFHMC_ERRORDATA));
3531         }
3532
3533         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3534                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3535
3536                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3537                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3538                         i40e_ptp_tx_hwtstamp(pf);
3539                 }
3540         }
3541
3542         /* If a critical error is pending we have no choice but to reset the
3543          * device.
3544          * Report and mask out any remaining unexpected interrupts.
3545          */
3546         icr0_remaining = icr0 & ena_mask;
3547         if (icr0_remaining) {
3548                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3549                          icr0_remaining);
3550                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3551                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3552                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3553                         dev_info(&pf->pdev->dev, "device will be reset\n");
3554                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3555                         i40e_service_event_schedule(pf);
3556                 }
3557                 ena_mask &= ~icr0_remaining;
3558         }
3559         ret = IRQ_HANDLED;
3560
3561 enable_intr:
3562         /* re-enable interrupt causes */
3563         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3564         if (!test_bit(__I40E_DOWN, &pf->state)) {
3565                 i40e_service_event_schedule(pf);
3566                 i40e_irq_dynamic_enable_icr0(pf);
3567         }
3568
3569         return ret;
3570 }
3571
3572 /**
3573  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3574  * @tx_ring:  tx ring to clean
3575  * @budget:   how many cleans we're allowed
3576  *
3577  * Returns true if there's any budget left (e.g. the clean is finished)
3578  **/
3579 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3580 {
3581         struct i40e_vsi *vsi = tx_ring->vsi;
3582         u16 i = tx_ring->next_to_clean;
3583         struct i40e_tx_buffer *tx_buf;
3584         struct i40e_tx_desc *tx_desc;
3585
3586         tx_buf = &tx_ring->tx_bi[i];
3587         tx_desc = I40E_TX_DESC(tx_ring, i);
3588         i -= tx_ring->count;
3589
3590         do {
3591                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3592
3593                 /* if next_to_watch is not set then there is no work pending */
3594                 if (!eop_desc)
3595                         break;
3596
3597                 /* prevent any other reads prior to eop_desc */
3598                 read_barrier_depends();
3599
3600                 /* if the descriptor isn't done, no work yet to do */
3601                 if (!(eop_desc->cmd_type_offset_bsz &
3602                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3603                         break;
3604
3605                 /* clear next_to_watch to prevent false hangs */
3606                 tx_buf->next_to_watch = NULL;
3607
3608                 tx_desc->buffer_addr = 0;
3609                 tx_desc->cmd_type_offset_bsz = 0;
3610                 /* move past filter desc */
3611                 tx_buf++;
3612                 tx_desc++;
3613                 i++;
3614                 if (unlikely(!i)) {
3615                         i -= tx_ring->count;
3616                         tx_buf = tx_ring->tx_bi;
3617                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3618                 }
3619                 /* unmap skb header data */
3620                 dma_unmap_single(tx_ring->dev,
3621                                  dma_unmap_addr(tx_buf, dma),
3622                                  dma_unmap_len(tx_buf, len),
3623                                  DMA_TO_DEVICE);
3624                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3625                         kfree(tx_buf->raw_buf);
3626
3627                 tx_buf->raw_buf = NULL;
3628                 tx_buf->tx_flags = 0;
3629                 tx_buf->next_to_watch = NULL;
3630                 dma_unmap_len_set(tx_buf, len, 0);
3631                 tx_desc->buffer_addr = 0;
3632                 tx_desc->cmd_type_offset_bsz = 0;
3633
3634                 /* move us past the eop_desc for start of next FD desc */
3635                 tx_buf++;
3636                 tx_desc++;
3637                 i++;
3638                 if (unlikely(!i)) {
3639                         i -= tx_ring->count;
3640                         tx_buf = tx_ring->tx_bi;
3641                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3642                 }
3643
3644                 /* update budget accounting */
3645                 budget--;
3646         } while (likely(budget));
3647
3648         i += tx_ring->count;
3649         tx_ring->next_to_clean = i;
3650
3651         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3652                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3653
3654         return budget > 0;
3655 }
3656
3657 /**
3658  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3659  * @irq: interrupt number
3660  * @data: pointer to a q_vector
3661  **/
3662 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3663 {
3664         struct i40e_q_vector *q_vector = data;
3665         struct i40e_vsi *vsi;
3666
3667         if (!q_vector->tx.ring)
3668                 return IRQ_HANDLED;
3669
3670         vsi = q_vector->tx.ring->vsi;
3671         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3672
3673         return IRQ_HANDLED;
3674 }
3675
3676 /**
3677  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3678  * @vsi: the VSI being configured
3679  * @v_idx: vector index
3680  * @qp_idx: queue pair index
3681  **/
3682 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3683 {
3684         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3685         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3686         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3687
3688         tx_ring->q_vector = q_vector;
3689         tx_ring->next = q_vector->tx.ring;
3690         q_vector->tx.ring = tx_ring;
3691         q_vector->tx.count++;
3692
3693         rx_ring->q_vector = q_vector;
3694         rx_ring->next = q_vector->rx.ring;
3695         q_vector->rx.ring = rx_ring;
3696         q_vector->rx.count++;
3697 }
3698
3699 /**
3700  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3701  * @vsi: the VSI being configured
3702  *
3703  * This function maps descriptor rings to the queue-specific vectors
3704  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3705  * one vector per queue pair, but on a constrained vector budget, we
3706  * group the queue pairs as "efficiently" as possible.
3707  **/
3708 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3709 {
3710         int qp_remaining = vsi->num_queue_pairs;
3711         int q_vectors = vsi->num_q_vectors;
3712         int num_ringpairs;
3713         int v_start = 0;
3714         int qp_idx = 0;
3715
3716         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3717          * group them so there are multiple queues per vector.
3718          * It is also important to go through all the vectors available to be
3719          * sure that if we don't use all the vectors, that the remaining vectors
3720          * are cleared. This is especially important when decreasing the
3721          * number of queues in use.
3722          */
3723         for (; v_start < q_vectors; v_start++) {
3724                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3725
3726                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3727
3728                 q_vector->num_ringpairs = num_ringpairs;
3729
3730                 q_vector->rx.count = 0;
3731                 q_vector->tx.count = 0;
3732                 q_vector->rx.ring = NULL;
3733                 q_vector->tx.ring = NULL;
3734
3735                 while (num_ringpairs--) {
3736                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3737                         qp_idx++;
3738                         qp_remaining--;
3739                 }
3740         }
3741 }
3742
3743 /**
3744  * i40e_vsi_request_irq - Request IRQ from the OS
3745  * @vsi: the VSI being configured
3746  * @basename: name for the vector
3747  **/
3748 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3749 {
3750         struct i40e_pf *pf = vsi->back;
3751         int err;
3752
3753         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3754                 err = i40e_vsi_request_irq_msix(vsi, basename);
3755         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3756                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3757                                   pf->int_name, pf);
3758         else
3759                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3760                                   pf->int_name, pf);
3761
3762         if (err)
3763                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3764
3765         return err;
3766 }
3767
3768 #ifdef CONFIG_NET_POLL_CONTROLLER
3769 /**
3770  * i40e_netpoll - A Polling 'interrupt'handler
3771  * @netdev: network interface device structure
3772  *
3773  * This is used by netconsole to send skbs without having to re-enable
3774  * interrupts.  It's not called while the normal interrupt routine is executing.
3775  **/
3776 #ifdef I40E_FCOE
3777 void i40e_netpoll(struct net_device *netdev)
3778 #else
3779 static void i40e_netpoll(struct net_device *netdev)
3780 #endif
3781 {
3782         struct i40e_netdev_priv *np = netdev_priv(netdev);
3783         struct i40e_vsi *vsi = np->vsi;
3784         struct i40e_pf *pf = vsi->back;
3785         int i;
3786
3787         /* if interface is down do nothing */
3788         if (test_bit(__I40E_DOWN, &vsi->state))
3789                 return;
3790
3791         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3792                 for (i = 0; i < vsi->num_q_vectors; i++)
3793                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3794         } else {
3795                 i40e_intr(pf->pdev->irq, netdev);
3796         }
3797 }
3798 #endif
3799
3800 /**
3801  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3802  * @pf: the PF being configured
3803  * @pf_q: the PF queue
3804  * @enable: enable or disable state of the queue
3805  *
3806  * This routine will wait for the given Tx queue of the PF to reach the
3807  * enabled or disabled state.
3808  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3809  * multiple retries; else will return 0 in case of success.
3810  **/
3811 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3812 {
3813         int i;
3814         u32 tx_reg;
3815
3816         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3817                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3818                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3819                         break;
3820
3821                 usleep_range(10, 20);
3822         }
3823         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3824                 return -ETIMEDOUT;
3825
3826         return 0;
3827 }
3828
3829 /**
3830  * i40e_vsi_control_tx - Start or stop a VSI's rings
3831  * @vsi: the VSI being configured
3832  * @enable: start or stop the rings
3833  **/
3834 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3835 {
3836         struct i40e_pf *pf = vsi->back;
3837         struct i40e_hw *hw = &pf->hw;
3838         int i, j, pf_q, ret = 0;
3839         u32 tx_reg;
3840
3841         pf_q = vsi->base_queue;
3842         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3843
3844                 /* warn the TX unit of coming changes */
3845                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3846                 if (!enable)
3847                         usleep_range(10, 20);
3848
3849                 for (j = 0; j < 50; j++) {
3850                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3851                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3852                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3853                                 break;
3854                         usleep_range(1000, 2000);
3855                 }
3856                 /* Skip if the queue is already in the requested state */
3857                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3858                         continue;
3859
3860                 /* turn on/off the queue */
3861                 if (enable) {
3862                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3863                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3864                 } else {
3865                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3866                 }
3867
3868                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3869                 /* No waiting for the Tx queue to disable */
3870                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3871                         continue;
3872
3873                 /* wait for the change to finish */
3874                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3875                 if (ret) {
3876                         dev_info(&pf->pdev->dev,
3877                                  "VSI seid %d Tx ring %d %sable timeout\n",
3878                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3879                         break;
3880                 }
3881         }
3882
3883         if (hw->revision_id == 0)
3884                 mdelay(50);
3885         return ret;
3886 }
3887
3888 /**
3889  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3890  * @pf: the PF being configured
3891  * @pf_q: the PF queue
3892  * @enable: enable or disable state of the queue
3893  *
3894  * This routine will wait for the given Rx queue of the PF to reach the
3895  * enabled or disabled state.
3896  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3897  * multiple retries; else will return 0 in case of success.
3898  **/
3899 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3900 {
3901         int i;
3902         u32 rx_reg;
3903
3904         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3905                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3906                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3907                         break;
3908
3909                 usleep_range(10, 20);
3910         }
3911         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3912                 return -ETIMEDOUT;
3913
3914         return 0;
3915 }
3916
3917 /**
3918  * i40e_vsi_control_rx - Start or stop a VSI's rings
3919  * @vsi: the VSI being configured
3920  * @enable: start or stop the rings
3921  **/
3922 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3923 {
3924         struct i40e_pf *pf = vsi->back;
3925         struct i40e_hw *hw = &pf->hw;
3926         int i, j, pf_q, ret = 0;
3927         u32 rx_reg;
3928
3929         pf_q = vsi->base_queue;
3930         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3931                 for (j = 0; j < 50; j++) {
3932                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3933                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3934                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3935                                 break;
3936                         usleep_range(1000, 2000);
3937                 }
3938
3939                 /* Skip if the queue is already in the requested state */
3940                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3941                         continue;
3942
3943                 /* turn on/off the queue */
3944                 if (enable)
3945                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3946                 else
3947                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3948                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3949
3950                 /* wait for the change to finish */
3951                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3952                 if (ret) {
3953                         dev_info(&pf->pdev->dev,
3954                                  "VSI seid %d Rx ring %d %sable timeout\n",
3955                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3956                         break;
3957                 }
3958         }
3959
3960         return ret;
3961 }
3962
3963 /**
3964  * i40e_vsi_control_rings - Start or stop a VSI's rings
3965  * @vsi: the VSI being configured
3966  * @enable: start or stop the rings
3967  **/
3968 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3969 {
3970         int ret = 0;
3971
3972         /* do rx first for enable and last for disable */
3973         if (request) {
3974                 ret = i40e_vsi_control_rx(vsi, request);
3975                 if (ret)
3976                         return ret;
3977                 ret = i40e_vsi_control_tx(vsi, request);
3978         } else {
3979                 /* Ignore return value, we need to shutdown whatever we can */
3980                 i40e_vsi_control_tx(vsi, request);
3981                 i40e_vsi_control_rx(vsi, request);
3982         }
3983
3984         return ret;
3985 }
3986
3987 /**
3988  * i40e_vsi_free_irq - Free the irq association with the OS
3989  * @vsi: the VSI being configured
3990  **/
3991 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3992 {
3993         struct i40e_pf *pf = vsi->back;
3994         struct i40e_hw *hw = &pf->hw;
3995         int base = vsi->base_vector;
3996         u32 val, qp;
3997         int i;
3998
3999         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4000                 if (!vsi->q_vectors)
4001                         return;
4002
4003                 if (!vsi->irqs_ready)
4004                         return;
4005
4006                 vsi->irqs_ready = false;
4007                 for (i = 0; i < vsi->num_q_vectors; i++) {
4008                         u16 vector = i + base;
4009
4010                         /* free only the irqs that were actually requested */
4011                         if (!vsi->q_vectors[i] ||
4012                             !vsi->q_vectors[i]->num_ringpairs)
4013                                 continue;
4014
4015                         /* clear the affinity_mask in the IRQ descriptor */
4016                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4017                                               NULL);
4018                         free_irq(pf->msix_entries[vector].vector,
4019                                  vsi->q_vectors[i]);
4020
4021                         /* Tear down the interrupt queue link list
4022                          *
4023                          * We know that they come in pairs and always
4024                          * the Rx first, then the Tx.  To clear the
4025                          * link list, stick the EOL value into the
4026                          * next_q field of the registers.
4027                          */
4028                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4029                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4030                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4031                         val |= I40E_QUEUE_END_OF_LIST
4032                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4033                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4034
4035                         while (qp != I40E_QUEUE_END_OF_LIST) {
4036                                 u32 next;
4037
4038                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4039
4040                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4041                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4042                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4043                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4044
4045                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4046                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4047
4048                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4049
4050                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4051
4052                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4053                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4054
4055                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4056                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4057                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4058                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4059
4060                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4061                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4062
4063                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4064                                 qp = next;
4065                         }
4066                 }
4067         } else {
4068                 free_irq(pf->pdev->irq, pf);
4069
4070                 val = rd32(hw, I40E_PFINT_LNKLST0);
4071                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4072                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4073                 val |= I40E_QUEUE_END_OF_LIST
4074                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4075                 wr32(hw, I40E_PFINT_LNKLST0, val);
4076
4077                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4078                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4079                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4080                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4081                          I40E_QINT_RQCTL_INTEVENT_MASK);
4082
4083                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4084                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4085
4086                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4087
4088                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4089
4090                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4091                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4092                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4093                          I40E_QINT_TQCTL_INTEVENT_MASK);
4094
4095                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4096                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4097
4098                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4099         }
4100 }
4101
4102 /**
4103  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4104  * @vsi: the VSI being configured
4105  * @v_idx: Index of vector to be freed
4106  *
4107  * This function frees the memory allocated to the q_vector.  In addition if
4108  * NAPI is enabled it will delete any references to the NAPI struct prior
4109  * to freeing the q_vector.
4110  **/
4111 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4112 {
4113         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4114         struct i40e_ring *ring;
4115
4116         if (!q_vector)
4117                 return;
4118
4119         /* disassociate q_vector from rings */
4120         i40e_for_each_ring(ring, q_vector->tx)
4121                 ring->q_vector = NULL;
4122
4123         i40e_for_each_ring(ring, q_vector->rx)
4124                 ring->q_vector = NULL;
4125
4126         /* only VSI w/ an associated netdev is set up w/ NAPI */
4127         if (vsi->netdev)
4128                 netif_napi_del(&q_vector->napi);
4129
4130         vsi->q_vectors[v_idx] = NULL;
4131
4132         kfree_rcu(q_vector, rcu);
4133 }
4134
4135 /**
4136  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4137  * @vsi: the VSI being un-configured
4138  *
4139  * This frees the memory allocated to the q_vectors and
4140  * deletes references to the NAPI struct.
4141  **/
4142 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4143 {
4144         int v_idx;
4145
4146         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4147                 i40e_free_q_vector(vsi, v_idx);
4148 }
4149
4150 /**
4151  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4152  * @pf: board private structure
4153  **/
4154 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4155 {
4156         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4157         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4158                 pci_disable_msix(pf->pdev);
4159                 kfree(pf->msix_entries);
4160                 pf->msix_entries = NULL;
4161                 kfree(pf->irq_pile);
4162                 pf->irq_pile = NULL;
4163         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4164                 pci_disable_msi(pf->pdev);
4165         }
4166         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4167 }
4168
4169 /**
4170  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4171  * @pf: board private structure
4172  *
4173  * We go through and clear interrupt specific resources and reset the structure
4174  * to pre-load conditions
4175  **/
4176 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4177 {
4178         int i;
4179
4180         i40e_stop_misc_vector(pf);
4181         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4182                 synchronize_irq(pf->msix_entries[0].vector);
4183                 free_irq(pf->msix_entries[0].vector, pf);
4184         }
4185
4186         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4187         for (i = 0; i < pf->num_alloc_vsi; i++)
4188                 if (pf->vsi[i])
4189                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4190         i40e_reset_interrupt_capability(pf);
4191 }
4192
4193 /**
4194  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4195  * @vsi: the VSI being configured
4196  **/
4197 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4198 {
4199         int q_idx;
4200
4201         if (!vsi->netdev)
4202                 return;
4203
4204         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4205                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4206 }
4207
4208 /**
4209  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4210  * @vsi: the VSI being configured
4211  **/
4212 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4213 {
4214         int q_idx;
4215
4216         if (!vsi->netdev)
4217                 return;
4218
4219         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4220                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4221 }
4222
4223 /**
4224  * i40e_vsi_close - Shut down a VSI
4225  * @vsi: the vsi to be quelled
4226  **/
4227 static void i40e_vsi_close(struct i40e_vsi *vsi)
4228 {
4229         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4230                 i40e_down(vsi);
4231         i40e_vsi_free_irq(vsi);
4232         i40e_vsi_free_tx_resources(vsi);
4233         i40e_vsi_free_rx_resources(vsi);
4234         vsi->current_netdev_flags = 0;
4235 }
4236
4237 /**
4238  * i40e_quiesce_vsi - Pause a given VSI
4239  * @vsi: the VSI being paused
4240  **/
4241 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4242 {
4243         if (test_bit(__I40E_DOWN, &vsi->state))
4244                 return;
4245
4246         /* No need to disable FCoE VSI when Tx suspended */
4247         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4248             vsi->type == I40E_VSI_FCOE) {
4249                 dev_dbg(&vsi->back->pdev->dev,
4250                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4251                 return;
4252         }
4253
4254         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4255         if (vsi->netdev && netif_running(vsi->netdev))
4256                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4257         else
4258                 i40e_vsi_close(vsi);
4259 }
4260
4261 /**
4262  * i40e_unquiesce_vsi - Resume a given VSI
4263  * @vsi: the VSI being resumed
4264  **/
4265 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4266 {
4267         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4268                 return;
4269
4270         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4271         if (vsi->netdev && netif_running(vsi->netdev))
4272                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4273         else
4274                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4275 }
4276
4277 /**
4278  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4279  * @pf: the PF
4280  **/
4281 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4282 {
4283         int v;
4284
4285         for (v = 0; v < pf->num_alloc_vsi; v++) {
4286                 if (pf->vsi[v])
4287                         i40e_quiesce_vsi(pf->vsi[v]);
4288         }
4289 }
4290
4291 /**
4292  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4293  * @pf: the PF
4294  **/
4295 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4296 {
4297         int v;
4298
4299         for (v = 0; v < pf->num_alloc_vsi; v++) {
4300                 if (pf->vsi[v])
4301                         i40e_unquiesce_vsi(pf->vsi[v]);
4302         }
4303 }
4304
4305 #ifdef CONFIG_I40E_DCB
4306 /**
4307  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4308  * @vsi: the VSI being configured
4309  *
4310  * This function waits for the given VSI's Tx queues to be disabled.
4311  **/
4312 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4313 {
4314         struct i40e_pf *pf = vsi->back;
4315         int i, pf_q, ret;
4316
4317         pf_q = vsi->base_queue;
4318         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4319                 /* Check and wait for the disable status of the queue */
4320                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4321                 if (ret) {
4322                         dev_info(&pf->pdev->dev,
4323                                  "VSI seid %d Tx ring %d disable timeout\n",
4324                                  vsi->seid, pf_q);
4325                         return ret;
4326                 }
4327         }
4328
4329         return 0;
4330 }
4331
4332 /**
4333  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4334  * @pf: the PF
4335  *
4336  * This function waits for the Tx queues to be in disabled state for all the
4337  * VSIs that are managed by this PF.
4338  **/
4339 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4340 {
4341         int v, ret = 0;
4342
4343         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4344                 /* No need to wait for FCoE VSI queues */
4345                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4346                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4347                         if (ret)
4348                                 break;
4349                 }
4350         }
4351
4352         return ret;
4353 }
4354
4355 #endif
4356
4357 /**
4358  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4359  * @q_idx: TX queue number
4360  * @vsi: Pointer to VSI struct
4361  *
4362  * This function checks specified queue for given VSI. Detects hung condition.
4363  * Sets hung bit since it is two step process. Before next run of service task
4364  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4365  * hung condition remain unchanged and during subsequent run, this function
4366  * issues SW interrupt to recover from hung condition.
4367  **/
4368 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4369 {
4370         struct i40e_ring *tx_ring = NULL;
4371         struct i40e_pf  *pf;
4372         u32 head, val, tx_pending;
4373         int i;
4374
4375         pf = vsi->back;
4376
4377         /* now that we have an index, find the tx_ring struct */
4378         for (i = 0; i < vsi->num_queue_pairs; i++) {
4379                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4380                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4381                                 tx_ring = vsi->tx_rings[i];
4382                                 break;
4383                         }
4384                 }
4385         }
4386
4387         if (!tx_ring)
4388                 return;
4389
4390         /* Read interrupt register */
4391         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4392                 val = rd32(&pf->hw,
4393                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4394                                                tx_ring->vsi->base_vector - 1));
4395         else
4396                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4397
4398         head = i40e_get_head(tx_ring);
4399
4400         tx_pending = i40e_get_tx_pending(tx_ring);
4401
4402         /* Interrupts are disabled and TX pending is non-zero,
4403          * trigger the SW interrupt (don't wait). Worst case
4404          * there will be one extra interrupt which may result
4405          * into not cleaning any queues because queues are cleaned.
4406          */
4407         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4408                 i40e_force_wb(vsi, tx_ring->q_vector);
4409 }
4410
4411 /**
4412  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4413  * @pf:  pointer to PF struct
4414  *
4415  * LAN VSI has netdev and netdev has TX queues. This function is to check
4416  * each of those TX queues if they are hung, trigger recovery by issuing
4417  * SW interrupt.
4418  **/
4419 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4420 {
4421         struct net_device *netdev;
4422         struct i40e_vsi *vsi;
4423         int i;
4424
4425         /* Only for LAN VSI */
4426         vsi = pf->vsi[pf->lan_vsi];
4427
4428         if (!vsi)
4429                 return;
4430
4431         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4432         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4433             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4434                 return;
4435
4436         /* Make sure type is MAIN VSI */
4437         if (vsi->type != I40E_VSI_MAIN)
4438                 return;
4439
4440         netdev = vsi->netdev;
4441         if (!netdev)
4442                 return;
4443
4444         /* Bail out if netif_carrier is not OK */
4445         if (!netif_carrier_ok(netdev))
4446                 return;
4447
4448         /* Go thru' TX queues for netdev */
4449         for (i = 0; i < netdev->num_tx_queues; i++) {
4450                 struct netdev_queue *q;
4451
4452                 q = netdev_get_tx_queue(netdev, i);
4453                 if (q)
4454                         i40e_detect_recover_hung_queue(i, vsi);
4455         }
4456 }
4457
4458 /**
4459  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4460  * @pf: pointer to PF
4461  *
4462  * Get TC map for ISCSI PF type that will include iSCSI TC
4463  * and LAN TC.
4464  **/
4465 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4466 {
4467         struct i40e_dcb_app_priority_table app;
4468         struct i40e_hw *hw = &pf->hw;
4469         u8 enabled_tc = 1; /* TC0 is always enabled */
4470         u8 tc, i;
4471         /* Get the iSCSI APP TLV */
4472         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4473
4474         for (i = 0; i < dcbcfg->numapps; i++) {
4475                 app = dcbcfg->app[i];
4476                 if (app.selector == I40E_APP_SEL_TCPIP &&
4477                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4478                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4479                         enabled_tc |= BIT_ULL(tc);
4480                         break;
4481                 }
4482         }
4483
4484         return enabled_tc;
4485 }
4486
4487 /**
4488  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4489  * @dcbcfg: the corresponding DCBx configuration structure
4490  *
4491  * Return the number of TCs from given DCBx configuration
4492  **/
4493 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4494 {
4495         u8 num_tc = 0;
4496         int i;
4497
4498         /* Scan the ETS Config Priority Table to find
4499          * traffic class enabled for a given priority
4500          * and use the traffic class index to get the
4501          * number of traffic classes enabled
4502          */
4503         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4504                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4505                         num_tc = dcbcfg->etscfg.prioritytable[i];
4506         }
4507
4508         /* Traffic class index starts from zero so
4509          * increment to return the actual count
4510          */
4511         return num_tc + 1;
4512 }
4513
4514 /**
4515  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4516  * @dcbcfg: the corresponding DCBx configuration structure
4517  *
4518  * Query the current DCB configuration and return the number of
4519  * traffic classes enabled from the given DCBX config
4520  **/
4521 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4522 {
4523         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4524         u8 enabled_tc = 1;
4525         u8 i;
4526
4527         for (i = 0; i < num_tc; i++)
4528                 enabled_tc |= BIT(i);
4529
4530         return enabled_tc;
4531 }
4532
4533 /**
4534  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4535  * @pf: PF being queried
4536  *
4537  * Return number of traffic classes enabled for the given PF
4538  **/
4539 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4540 {
4541         struct i40e_hw *hw = &pf->hw;
4542         u8 i, enabled_tc;
4543         u8 num_tc = 0;
4544         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4545
4546         /* If DCB is not enabled then always in single TC */
4547         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4548                 return 1;
4549
4550         /* SFP mode will be enabled for all TCs on port */
4551         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4552                 return i40e_dcb_get_num_tc(dcbcfg);
4553
4554         /* MFP mode return count of enabled TCs for this PF */
4555         if (pf->hw.func_caps.iscsi)
4556                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4557         else
4558                 return 1; /* Only TC0 */
4559
4560         /* At least have TC0 */
4561         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4562         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4563                 if (enabled_tc & BIT_ULL(i))
4564                         num_tc++;
4565         }
4566         return num_tc;
4567 }
4568
4569 /**
4570  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4571  * @pf: PF being queried
4572  *
4573  * Return a bitmap for first enabled traffic class for this PF.
4574  **/
4575 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4576 {
4577         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4578         u8 i = 0;
4579
4580         if (!enabled_tc)
4581                 return 0x1; /* TC0 */
4582
4583         /* Find the first enabled TC */
4584         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4585                 if (enabled_tc & BIT_ULL(i))
4586                         break;
4587         }
4588
4589         return BIT(i);
4590 }
4591
4592 /**
4593  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4594  * @pf: PF being queried
4595  *
4596  * Return a bitmap for enabled traffic classes for this PF.
4597  **/
4598 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4599 {
4600         /* If DCB is not enabled for this PF then just return default TC */
4601         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4602                 return i40e_pf_get_default_tc(pf);
4603
4604         /* SFP mode we want PF to be enabled for all TCs */
4605         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4606                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4607
4608         /* MFP enabled and iSCSI PF type */
4609         if (pf->hw.func_caps.iscsi)
4610                 return i40e_get_iscsi_tc_map(pf);
4611         else
4612                 return i40e_pf_get_default_tc(pf);
4613 }
4614
4615 /**
4616  * i40e_vsi_get_bw_info - Query VSI BW Information
4617  * @vsi: the VSI being queried
4618  *
4619  * Returns 0 on success, negative value on failure
4620  **/
4621 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4622 {
4623         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4624         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4625         struct i40e_pf *pf = vsi->back;
4626         struct i40e_hw *hw = &pf->hw;
4627         i40e_status ret;
4628         u32 tc_bw_max;
4629         int i;
4630
4631         /* Get the VSI level BW configuration */
4632         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4633         if (ret) {
4634                 dev_info(&pf->pdev->dev,
4635                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4636                          i40e_stat_str(&pf->hw, ret),
4637                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4638                 return -EINVAL;
4639         }
4640
4641         /* Get the VSI level BW configuration per TC */
4642         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4643                                                NULL);
4644         if (ret) {
4645                 dev_info(&pf->pdev->dev,
4646                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4647                          i40e_stat_str(&pf->hw, ret),
4648                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4649                 return -EINVAL;
4650         }
4651
4652         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4653                 dev_info(&pf->pdev->dev,
4654                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4655                          bw_config.tc_valid_bits,
4656                          bw_ets_config.tc_valid_bits);
4657                 /* Still continuing */
4658         }
4659
4660         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4661         vsi->bw_max_quanta = bw_config.max_bw;
4662         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4663                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4664         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4665                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4666                 vsi->bw_ets_limit_credits[i] =
4667                                         le16_to_cpu(bw_ets_config.credits[i]);
4668                 /* 3 bits out of 4 for each TC */
4669                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4670         }
4671
4672         return 0;
4673 }
4674
4675 /**
4676  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4677  * @vsi: the VSI being configured
4678  * @enabled_tc: TC bitmap
4679  * @bw_credits: BW shared credits per TC
4680  *
4681  * Returns 0 on success, negative value on failure
4682  **/
4683 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4684                                        u8 *bw_share)
4685 {
4686         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4687         i40e_status ret;
4688         int i;
4689
4690         bw_data.tc_valid_bits = enabled_tc;
4691         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4692                 bw_data.tc_bw_credits[i] = bw_share[i];
4693
4694         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4695                                        NULL);
4696         if (ret) {
4697                 dev_info(&vsi->back->pdev->dev,
4698                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4699                          vsi->back->hw.aq.asq_last_status);
4700                 return -EINVAL;
4701         }
4702
4703         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4704                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4705
4706         return 0;
4707 }
4708
4709 /**
4710  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4711  * @vsi: the VSI being configured
4712  * @enabled_tc: TC map to be enabled
4713  *
4714  **/
4715 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4716 {
4717         struct net_device *netdev = vsi->netdev;
4718         struct i40e_pf *pf = vsi->back;
4719         struct i40e_hw *hw = &pf->hw;
4720         u8 netdev_tc = 0;
4721         int i;
4722         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4723
4724         if (!netdev)
4725                 return;
4726
4727         if (!enabled_tc) {
4728                 netdev_reset_tc(netdev);
4729                 return;
4730         }
4731
4732         /* Set up actual enabled TCs on the VSI */
4733         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4734                 return;
4735
4736         /* set per TC queues for the VSI */
4737         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4738                 /* Only set TC queues for enabled tcs
4739                  *
4740                  * e.g. For a VSI that has TC0 and TC3 enabled the
4741                  * enabled_tc bitmap would be 0x00001001; the driver
4742                  * will set the numtc for netdev as 2 that will be
4743                  * referenced by the netdev layer as TC 0 and 1.
4744                  */
4745                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4746                         netdev_set_tc_queue(netdev,
4747                                         vsi->tc_config.tc_info[i].netdev_tc,
4748                                         vsi->tc_config.tc_info[i].qcount,
4749                                         vsi->tc_config.tc_info[i].qoffset);
4750         }
4751
4752         /* Assign UP2TC map for the VSI */
4753         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4754                 /* Get the actual TC# for the UP */
4755                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4756                 /* Get the mapped netdev TC# for the UP */
4757                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4758                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4759         }
4760 }
4761
4762 /**
4763  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4764  * @vsi: the VSI being configured
4765  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4766  **/
4767 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4768                                       struct i40e_vsi_context *ctxt)
4769 {
4770         /* copy just the sections touched not the entire info
4771          * since not all sections are valid as returned by
4772          * update vsi params
4773          */
4774         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4775         memcpy(&vsi->info.queue_mapping,
4776                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4777         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4778                sizeof(vsi->info.tc_mapping));
4779 }
4780
4781 /**
4782  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4783  * @vsi: VSI to be configured
4784  * @enabled_tc: TC bitmap
4785  *
4786  * This configures a particular VSI for TCs that are mapped to the
4787  * given TC bitmap. It uses default bandwidth share for TCs across
4788  * VSIs to configure TC for a particular VSI.
4789  *
4790  * NOTE:
4791  * It is expected that the VSI queues have been quisced before calling
4792  * this function.
4793  **/
4794 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4795 {
4796         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4797         struct i40e_vsi_context ctxt;
4798         int ret = 0;
4799         int i;
4800
4801         /* Check if enabled_tc is same as existing or new TCs */
4802         if (vsi->tc_config.enabled_tc == enabled_tc)
4803                 return ret;
4804
4805         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4806         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4807                 if (enabled_tc & BIT_ULL(i))
4808                         bw_share[i] = 1;
4809         }
4810
4811         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4812         if (ret) {
4813                 dev_info(&vsi->back->pdev->dev,
4814                          "Failed configuring TC map %d for VSI %d\n",
4815                          enabled_tc, vsi->seid);
4816                 goto out;
4817         }
4818
4819         /* Update Queue Pairs Mapping for currently enabled UPs */
4820         ctxt.seid = vsi->seid;
4821         ctxt.pf_num = vsi->back->hw.pf_id;
4822         ctxt.vf_num = 0;
4823         ctxt.uplink_seid = vsi->uplink_seid;
4824         ctxt.info = vsi->info;
4825         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4826
4827         /* Update the VSI after updating the VSI queue-mapping information */
4828         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4829         if (ret) {
4830                 dev_info(&vsi->back->pdev->dev,
4831                          "Update vsi tc config failed, err %s aq_err %s\n",
4832                          i40e_stat_str(&vsi->back->hw, ret),
4833                          i40e_aq_str(&vsi->back->hw,
4834                                      vsi->back->hw.aq.asq_last_status));
4835                 goto out;
4836         }
4837         /* update the local VSI info with updated queue map */
4838         i40e_vsi_update_queue_map(vsi, &ctxt);
4839         vsi->info.valid_sections = 0;
4840
4841         /* Update current VSI BW information */
4842         ret = i40e_vsi_get_bw_info(vsi);
4843         if (ret) {
4844                 dev_info(&vsi->back->pdev->dev,
4845                          "Failed updating vsi bw info, err %s aq_err %s\n",
4846                          i40e_stat_str(&vsi->back->hw, ret),
4847                          i40e_aq_str(&vsi->back->hw,
4848                                      vsi->back->hw.aq.asq_last_status));
4849                 goto out;
4850         }
4851
4852         /* Update the netdev TC setup */
4853         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4854 out:
4855         return ret;
4856 }
4857
4858 /**
4859  * i40e_veb_config_tc - Configure TCs for given VEB
4860  * @veb: given VEB
4861  * @enabled_tc: TC bitmap
4862  *
4863  * Configures given TC bitmap for VEB (switching) element
4864  **/
4865 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4866 {
4867         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4868         struct i40e_pf *pf = veb->pf;
4869         int ret = 0;
4870         int i;
4871
4872         /* No TCs or already enabled TCs just return */
4873         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4874                 return ret;
4875
4876         bw_data.tc_valid_bits = enabled_tc;
4877         /* bw_data.absolute_credits is not set (relative) */
4878
4879         /* Enable ETS TCs with equal BW Share for now */
4880         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4881                 if (enabled_tc & BIT_ULL(i))
4882                         bw_data.tc_bw_share_credits[i] = 1;
4883         }
4884
4885         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4886                                                    &bw_data, NULL);
4887         if (ret) {
4888                 dev_info(&pf->pdev->dev,
4889                          "VEB bw config failed, err %s aq_err %s\n",
4890                          i40e_stat_str(&pf->hw, ret),
4891                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4892                 goto out;
4893         }
4894
4895         /* Update the BW information */
4896         ret = i40e_veb_get_bw_info(veb);
4897         if (ret) {
4898                 dev_info(&pf->pdev->dev,
4899                          "Failed getting veb bw config, err %s aq_err %s\n",
4900                          i40e_stat_str(&pf->hw, ret),
4901                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4902         }
4903
4904 out:
4905         return ret;
4906 }
4907
4908 #ifdef CONFIG_I40E_DCB
4909 /**
4910  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4911  * @pf: PF struct
4912  *
4913  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4914  * the caller would've quiesce all the VSIs before calling
4915  * this function
4916  **/
4917 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4918 {
4919         u8 tc_map = 0;
4920         int ret;
4921         u8 v;
4922
4923         /* Enable the TCs available on PF to all VEBs */
4924         tc_map = i40e_pf_get_tc_map(pf);
4925         for (v = 0; v < I40E_MAX_VEB; v++) {
4926                 if (!pf->veb[v])
4927                         continue;
4928                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4929                 if (ret) {
4930                         dev_info(&pf->pdev->dev,
4931                                  "Failed configuring TC for VEB seid=%d\n",
4932                                  pf->veb[v]->seid);
4933                         /* Will try to configure as many components */
4934                 }
4935         }
4936
4937         /* Update each VSI */
4938         for (v = 0; v < pf->num_alloc_vsi; v++) {
4939                 if (!pf->vsi[v])
4940                         continue;
4941
4942                 /* - Enable all TCs for the LAN VSI
4943 #ifdef I40E_FCOE
4944                  * - For FCoE VSI only enable the TC configured
4945                  *   as per the APP TLV
4946 #endif
4947                  * - For all others keep them at TC0 for now
4948                  */
4949                 if (v == pf->lan_vsi)
4950                         tc_map = i40e_pf_get_tc_map(pf);
4951                 else
4952                         tc_map = i40e_pf_get_default_tc(pf);
4953 #ifdef I40E_FCOE
4954                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4955                         tc_map = i40e_get_fcoe_tc_map(pf);
4956 #endif /* #ifdef I40E_FCOE */
4957
4958                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4959                 if (ret) {
4960                         dev_info(&pf->pdev->dev,
4961                                  "Failed configuring TC for VSI seid=%d\n",
4962                                  pf->vsi[v]->seid);
4963                         /* Will try to configure as many components */
4964                 } else {
4965                         /* Re-configure VSI vectors based on updated TC map */
4966                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4967                         if (pf->vsi[v]->netdev)
4968                                 i40e_dcbnl_set_all(pf->vsi[v]);
4969                 }
4970         }
4971 }
4972
4973 /**
4974  * i40e_resume_port_tx - Resume port Tx
4975  * @pf: PF struct
4976  *
4977  * Resume a port's Tx and issue a PF reset in case of failure to
4978  * resume.
4979  **/
4980 static int i40e_resume_port_tx(struct i40e_pf *pf)
4981 {
4982         struct i40e_hw *hw = &pf->hw;
4983         int ret;
4984
4985         ret = i40e_aq_resume_port_tx(hw, NULL);
4986         if (ret) {
4987                 dev_info(&pf->pdev->dev,
4988                          "Resume Port Tx failed, err %s aq_err %s\n",
4989                           i40e_stat_str(&pf->hw, ret),
4990                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4991                 /* Schedule PF reset to recover */
4992                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4993                 i40e_service_event_schedule(pf);
4994         }
4995
4996         return ret;
4997 }
4998
4999 /**
5000  * i40e_init_pf_dcb - Initialize DCB configuration
5001  * @pf: PF being configured
5002  *
5003  * Query the current DCB configuration and cache it
5004  * in the hardware structure
5005  **/
5006 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5007 {
5008         struct i40e_hw *hw = &pf->hw;
5009         int err = 0;
5010
5011         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5012         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5013             (pf->hw.aq.fw_maj_ver < 4))
5014                 goto out;
5015
5016         /* Get the initial DCB configuration */
5017         err = i40e_init_dcb(hw);
5018         if (!err) {
5019                 /* Device/Function is not DCBX capable */
5020                 if ((!hw->func_caps.dcb) ||
5021                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5022                         dev_info(&pf->pdev->dev,
5023                                  "DCBX offload is not supported or is disabled for this PF.\n");
5024
5025                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5026                                 goto out;
5027
5028                 } else {
5029                         /* When status is not DISABLED then DCBX in FW */
5030                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5031                                        DCB_CAP_DCBX_VER_IEEE;
5032
5033                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5034                         /* Enable DCB tagging only when more than one TC */
5035                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5036                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5037                         dev_dbg(&pf->pdev->dev,
5038                                 "DCBX offload is supported for this PF.\n");
5039                 }
5040         } else {
5041                 dev_info(&pf->pdev->dev,
5042                          "Query for DCB configuration failed, err %s aq_err %s\n",
5043                          i40e_stat_str(&pf->hw, err),
5044                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5045         }
5046
5047 out:
5048         return err;
5049 }
5050 #endif /* CONFIG_I40E_DCB */
5051 #define SPEED_SIZE 14
5052 #define FC_SIZE 8
5053 /**
5054  * i40e_print_link_message - print link up or down
5055  * @vsi: the VSI for which link needs a message
5056  */
5057 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5058 {
5059         char *speed = "Unknown";
5060         char *fc = "Unknown";
5061
5062         if (vsi->current_isup == isup)
5063                 return;
5064         vsi->current_isup = isup;
5065         if (!isup) {
5066                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5067                 return;
5068         }
5069
5070         /* Warn user if link speed on NPAR enabled partition is not at
5071          * least 10GB
5072          */
5073         if (vsi->back->hw.func_caps.npar_enable &&
5074             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5075              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5076                 netdev_warn(vsi->netdev,
5077                             "The partition detected link speed that is less than 10Gbps\n");
5078
5079         switch (vsi->back->hw.phy.link_info.link_speed) {
5080         case I40E_LINK_SPEED_40GB:
5081                 speed = "40 G";
5082                 break;
5083         case I40E_LINK_SPEED_20GB:
5084                 speed = "20 G";
5085                 break;
5086         case I40E_LINK_SPEED_10GB:
5087                 speed = "10 G";
5088                 break;
5089         case I40E_LINK_SPEED_1GB:
5090                 speed = "1000 M";
5091                 break;
5092         case I40E_LINK_SPEED_100MB:
5093                 speed = "100 M";
5094                 break;
5095         default:
5096                 break;
5097         }
5098
5099         switch (vsi->back->hw.fc.current_mode) {
5100         case I40E_FC_FULL:
5101                 fc = "RX/TX";
5102                 break;
5103         case I40E_FC_TX_PAUSE:
5104                 fc = "TX";
5105                 break;
5106         case I40E_FC_RX_PAUSE:
5107                 fc = "RX";
5108                 break;
5109         default:
5110                 fc = "None";
5111                 break;
5112         }
5113
5114         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5115                     speed, fc);
5116 }
5117
5118 /**
5119  * i40e_up_complete - Finish the last steps of bringing up a connection
5120  * @vsi: the VSI being configured
5121  **/
5122 static int i40e_up_complete(struct i40e_vsi *vsi)
5123 {
5124         struct i40e_pf *pf = vsi->back;
5125         int err;
5126
5127         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5128                 i40e_vsi_configure_msix(vsi);
5129         else
5130                 i40e_configure_msi_and_legacy(vsi);
5131
5132         /* start rings */
5133         err = i40e_vsi_control_rings(vsi, true);
5134         if (err)
5135                 return err;
5136
5137         clear_bit(__I40E_DOWN, &vsi->state);
5138         i40e_napi_enable_all(vsi);
5139         i40e_vsi_enable_irq(vsi);
5140
5141         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5142             (vsi->netdev)) {
5143                 i40e_print_link_message(vsi, true);
5144                 netif_tx_start_all_queues(vsi->netdev);
5145                 netif_carrier_on(vsi->netdev);
5146         } else if (vsi->netdev) {
5147                 i40e_print_link_message(vsi, false);
5148                 /* need to check for qualified module here*/
5149                 if ((pf->hw.phy.link_info.link_info &
5150                         I40E_AQ_MEDIA_AVAILABLE) &&
5151                     (!(pf->hw.phy.link_info.an_info &
5152                         I40E_AQ_QUALIFIED_MODULE)))
5153                         netdev_err(vsi->netdev,
5154                                    "the driver failed to link because an unqualified module was detected.");
5155         }
5156
5157         /* replay FDIR SB filters */
5158         if (vsi->type == I40E_VSI_FDIR) {
5159                 /* reset fd counters */
5160                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5161                 if (pf->fd_tcp_rule > 0) {
5162                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5163                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5164                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5165                         pf->fd_tcp_rule = 0;
5166                 }
5167                 i40e_fdir_filter_restore(vsi);
5168         }
5169         i40e_service_event_schedule(pf);
5170
5171         return 0;
5172 }
5173
5174 /**
5175  * i40e_vsi_reinit_locked - Reset the VSI
5176  * @vsi: the VSI being configured
5177  *
5178  * Rebuild the ring structs after some configuration
5179  * has changed, e.g. MTU size.
5180  **/
5181 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5182 {
5183         struct i40e_pf *pf = vsi->back;
5184
5185         WARN_ON(in_interrupt());
5186         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5187                 usleep_range(1000, 2000);
5188         i40e_down(vsi);
5189
5190         /* Give a VF some time to respond to the reset.  The
5191          * two second wait is based upon the watchdog cycle in
5192          * the VF driver.
5193          */
5194         if (vsi->type == I40E_VSI_SRIOV)
5195                 msleep(2000);
5196         i40e_up(vsi);
5197         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5198 }
5199
5200 /**
5201  * i40e_up - Bring the connection back up after being down
5202  * @vsi: the VSI being configured
5203  **/
5204 int i40e_up(struct i40e_vsi *vsi)
5205 {
5206         int err;
5207
5208         err = i40e_vsi_configure(vsi);
5209         if (!err)
5210                 err = i40e_up_complete(vsi);
5211
5212         return err;
5213 }
5214
5215 /**
5216  * i40e_down - Shutdown the connection processing
5217  * @vsi: the VSI being stopped
5218  **/
5219 void i40e_down(struct i40e_vsi *vsi)
5220 {
5221         int i;
5222
5223         /* It is assumed that the caller of this function
5224          * sets the vsi->state __I40E_DOWN bit.
5225          */
5226         if (vsi->netdev) {
5227                 netif_carrier_off(vsi->netdev);
5228                 netif_tx_disable(vsi->netdev);
5229         }
5230         i40e_vsi_disable_irq(vsi);
5231         i40e_vsi_control_rings(vsi, false);
5232         i40e_napi_disable_all(vsi);
5233
5234         for (i = 0; i < vsi->num_queue_pairs; i++) {
5235                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5236                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5237         }
5238 }
5239
5240 /**
5241  * i40e_setup_tc - configure multiple traffic classes
5242  * @netdev: net device to configure
5243  * @tc: number of traffic classes to enable
5244  **/
5245 #ifdef I40E_FCOE
5246 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5247 #else
5248 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5249 #endif
5250 {
5251         struct i40e_netdev_priv *np = netdev_priv(netdev);
5252         struct i40e_vsi *vsi = np->vsi;
5253         struct i40e_pf *pf = vsi->back;
5254         u8 enabled_tc = 0;
5255         int ret = -EINVAL;
5256         int i;
5257
5258         /* Check if DCB enabled to continue */
5259         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5260                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5261                 goto exit;
5262         }
5263
5264         /* Check if MFP enabled */
5265         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5266                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5267                 goto exit;
5268         }
5269
5270         /* Check whether tc count is within enabled limit */
5271         if (tc > i40e_pf_get_num_tc(pf)) {
5272                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5273                 goto exit;
5274         }
5275
5276         /* Generate TC map for number of tc requested */
5277         for (i = 0; i < tc; i++)
5278                 enabled_tc |= BIT_ULL(i);
5279
5280         /* Requesting same TC configuration as already enabled */
5281         if (enabled_tc == vsi->tc_config.enabled_tc)
5282                 return 0;
5283
5284         /* Quiesce VSI queues */
5285         i40e_quiesce_vsi(vsi);
5286
5287         /* Configure VSI for enabled TCs */
5288         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5289         if (ret) {
5290                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5291                             vsi->seid);
5292                 goto exit;
5293         }
5294
5295         /* Unquiesce VSI */
5296         i40e_unquiesce_vsi(vsi);
5297
5298 exit:
5299         return ret;
5300 }
5301
5302 /**
5303  * i40e_open - Called when a network interface is made active
5304  * @netdev: network interface device structure
5305  *
5306  * The open entry point is called when a network interface is made
5307  * active by the system (IFF_UP).  At this point all resources needed
5308  * for transmit and receive operations are allocated, the interrupt
5309  * handler is registered with the OS, the netdev watchdog subtask is
5310  * enabled, and the stack is notified that the interface is ready.
5311  *
5312  * Returns 0 on success, negative value on failure
5313  **/
5314 int i40e_open(struct net_device *netdev)
5315 {
5316         struct i40e_netdev_priv *np = netdev_priv(netdev);
5317         struct i40e_vsi *vsi = np->vsi;
5318         struct i40e_pf *pf = vsi->back;
5319         int err;
5320
5321         /* disallow open during test or if eeprom is broken */
5322         if (test_bit(__I40E_TESTING, &pf->state) ||
5323             test_bit(__I40E_BAD_EEPROM, &pf->state))
5324                 return -EBUSY;
5325
5326         netif_carrier_off(netdev);
5327
5328         err = i40e_vsi_open(vsi);
5329         if (err)
5330                 return err;
5331
5332         /* configure global TSO hardware offload settings */
5333         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5334                                                        TCP_FLAG_FIN) >> 16);
5335         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5336                                                        TCP_FLAG_FIN |
5337                                                        TCP_FLAG_CWR) >> 16);
5338         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5339
5340 #ifdef CONFIG_I40E_VXLAN
5341         vxlan_get_rx_port(netdev);
5342 #endif
5343
5344         return 0;
5345 }
5346
5347 /**
5348  * i40e_vsi_open -
5349  * @vsi: the VSI to open
5350  *
5351  * Finish initialization of the VSI.
5352  *
5353  * Returns 0 on success, negative value on failure
5354  **/
5355 int i40e_vsi_open(struct i40e_vsi *vsi)
5356 {
5357         struct i40e_pf *pf = vsi->back;
5358         char int_name[I40E_INT_NAME_STR_LEN];
5359         int err;
5360
5361         /* allocate descriptors */
5362         err = i40e_vsi_setup_tx_resources(vsi);
5363         if (err)
5364                 goto err_setup_tx;
5365         err = i40e_vsi_setup_rx_resources(vsi);
5366         if (err)
5367                 goto err_setup_rx;
5368
5369         err = i40e_vsi_configure(vsi);
5370         if (err)
5371                 goto err_setup_rx;
5372
5373         if (vsi->netdev) {
5374                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5375                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5376                 err = i40e_vsi_request_irq(vsi, int_name);
5377                 if (err)
5378                         goto err_setup_rx;
5379
5380                 /* Notify the stack of the actual queue counts. */
5381                 err = netif_set_real_num_tx_queues(vsi->netdev,
5382                                                    vsi->num_queue_pairs);
5383                 if (err)
5384                         goto err_set_queues;
5385
5386                 err = netif_set_real_num_rx_queues(vsi->netdev,
5387                                                    vsi->num_queue_pairs);
5388                 if (err)
5389                         goto err_set_queues;
5390
5391         } else if (vsi->type == I40E_VSI_FDIR) {
5392                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5393                          dev_driver_string(&pf->pdev->dev),
5394                          dev_name(&pf->pdev->dev));
5395                 err = i40e_vsi_request_irq(vsi, int_name);
5396
5397         } else {
5398                 err = -EINVAL;
5399                 goto err_setup_rx;
5400         }
5401
5402         err = i40e_up_complete(vsi);
5403         if (err)
5404                 goto err_up_complete;
5405
5406         return 0;
5407
5408 err_up_complete:
5409         i40e_down(vsi);
5410 err_set_queues:
5411         i40e_vsi_free_irq(vsi);
5412 err_setup_rx:
5413         i40e_vsi_free_rx_resources(vsi);
5414 err_setup_tx:
5415         i40e_vsi_free_tx_resources(vsi);
5416         if (vsi == pf->vsi[pf->lan_vsi])
5417                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5418
5419         return err;
5420 }
5421
5422 /**
5423  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5424  * @pf: Pointer to PF
5425  *
5426  * This function destroys the hlist where all the Flow Director
5427  * filters were saved.
5428  **/
5429 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5430 {
5431         struct i40e_fdir_filter *filter;
5432         struct hlist_node *node2;
5433
5434         hlist_for_each_entry_safe(filter, node2,
5435                                   &pf->fdir_filter_list, fdir_node) {
5436                 hlist_del(&filter->fdir_node);
5437                 kfree(filter);
5438         }
5439         pf->fdir_pf_active_filters = 0;
5440 }
5441
5442 /**
5443  * i40e_close - Disables a network interface
5444  * @netdev: network interface device structure
5445  *
5446  * The close entry point is called when an interface is de-activated
5447  * by the OS.  The hardware is still under the driver's control, but
5448  * this netdev interface is disabled.
5449  *
5450  * Returns 0, this is not allowed to fail
5451  **/
5452 #ifdef I40E_FCOE
5453 int i40e_close(struct net_device *netdev)
5454 #else
5455 static int i40e_close(struct net_device *netdev)
5456 #endif
5457 {
5458         struct i40e_netdev_priv *np = netdev_priv(netdev);
5459         struct i40e_vsi *vsi = np->vsi;
5460
5461         i40e_vsi_close(vsi);
5462
5463         return 0;
5464 }
5465
5466 /**
5467  * i40e_do_reset - Start a PF or Core Reset sequence
5468  * @pf: board private structure
5469  * @reset_flags: which reset is requested
5470  *
5471  * The essential difference in resets is that the PF Reset
5472  * doesn't clear the packet buffers, doesn't reset the PE
5473  * firmware, and doesn't bother the other PFs on the chip.
5474  **/
5475 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5476 {
5477         u32 val;
5478
5479         WARN_ON(in_interrupt());
5480
5481         if (i40e_check_asq_alive(&pf->hw))
5482                 i40e_vc_notify_reset(pf);
5483
5484         /* do the biggest reset indicated */
5485         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5486
5487                 /* Request a Global Reset
5488                  *
5489                  * This will start the chip's countdown to the actual full
5490                  * chip reset event, and a warning interrupt to be sent
5491                  * to all PFs, including the requestor.  Our handler
5492                  * for the warning interrupt will deal with the shutdown
5493                  * and recovery of the switch setup.
5494                  */
5495                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5496                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5497                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5498                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5499
5500         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5501
5502                 /* Request a Core Reset
5503                  *
5504                  * Same as Global Reset, except does *not* include the MAC/PHY
5505                  */
5506                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5507                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5508                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5509                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5510                 i40e_flush(&pf->hw);
5511
5512         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5513
5514                 /* Request a PF Reset
5515                  *
5516                  * Resets only the PF-specific registers
5517                  *
5518                  * This goes directly to the tear-down and rebuild of
5519                  * the switch, since we need to do all the recovery as
5520                  * for the Core Reset.
5521                  */
5522                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5523                 i40e_handle_reset_warning(pf);
5524
5525         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5526                 int v;
5527
5528                 /* Find the VSI(s) that requested a re-init */
5529                 dev_info(&pf->pdev->dev,
5530                          "VSI reinit requested\n");
5531                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5532                         struct i40e_vsi *vsi = pf->vsi[v];
5533
5534                         if (vsi != NULL &&
5535                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5536                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5537                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5538                         }
5539                 }
5540         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5541                 int v;
5542
5543                 /* Find the VSI(s) that needs to be brought down */
5544                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5545                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5546                         struct i40e_vsi *vsi = pf->vsi[v];
5547
5548                         if (vsi != NULL &&
5549                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5550                                 set_bit(__I40E_DOWN, &vsi->state);
5551                                 i40e_down(vsi);
5552                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5553                         }
5554                 }
5555         } else {
5556                 dev_info(&pf->pdev->dev,
5557                          "bad reset request 0x%08x\n", reset_flags);
5558         }
5559 }
5560
5561 #ifdef CONFIG_I40E_DCB
5562 /**
5563  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5564  * @pf: board private structure
5565  * @old_cfg: current DCB config
5566  * @new_cfg: new DCB config
5567  **/
5568 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5569                             struct i40e_dcbx_config *old_cfg,
5570                             struct i40e_dcbx_config *new_cfg)
5571 {
5572         bool need_reconfig = false;
5573
5574         /* Check if ETS configuration has changed */
5575         if (memcmp(&new_cfg->etscfg,
5576                    &old_cfg->etscfg,
5577                    sizeof(new_cfg->etscfg))) {
5578                 /* If Priority Table has changed reconfig is needed */
5579                 if (memcmp(&new_cfg->etscfg.prioritytable,
5580                            &old_cfg->etscfg.prioritytable,
5581                            sizeof(new_cfg->etscfg.prioritytable))) {
5582                         need_reconfig = true;
5583                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5584                 }
5585
5586                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5587                            &old_cfg->etscfg.tcbwtable,
5588                            sizeof(new_cfg->etscfg.tcbwtable)))
5589                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5590
5591                 if (memcmp(&new_cfg->etscfg.tsatable,
5592                            &old_cfg->etscfg.tsatable,
5593                            sizeof(new_cfg->etscfg.tsatable)))
5594                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5595         }
5596
5597         /* Check if PFC configuration has changed */
5598         if (memcmp(&new_cfg->pfc,
5599                    &old_cfg->pfc,
5600                    sizeof(new_cfg->pfc))) {
5601                 need_reconfig = true;
5602                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5603         }
5604
5605         /* Check if APP Table has changed */
5606         if (memcmp(&new_cfg->app,
5607                    &old_cfg->app,
5608                    sizeof(new_cfg->app))) {
5609                 need_reconfig = true;
5610                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5611         }
5612
5613         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5614         return need_reconfig;
5615 }
5616
5617 /**
5618  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5619  * @pf: board private structure
5620  * @e: event info posted on ARQ
5621  **/
5622 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5623                                   struct i40e_arq_event_info *e)
5624 {
5625         struct i40e_aqc_lldp_get_mib *mib =
5626                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5627         struct i40e_hw *hw = &pf->hw;
5628         struct i40e_dcbx_config tmp_dcbx_cfg;
5629         bool need_reconfig = false;
5630         int ret = 0;
5631         u8 type;
5632
5633         /* Not DCB capable or capability disabled */
5634         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5635                 return ret;
5636
5637         /* Ignore if event is not for Nearest Bridge */
5638         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5639                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5640         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5641         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5642                 return ret;
5643
5644         /* Check MIB Type and return if event for Remote MIB update */
5645         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5646         dev_dbg(&pf->pdev->dev,
5647                 "LLDP event mib type %s\n", type ? "remote" : "local");
5648         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5649                 /* Update the remote cached instance and return */
5650                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5651                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5652                                 &hw->remote_dcbx_config);
5653                 goto exit;
5654         }
5655
5656         /* Store the old configuration */
5657         tmp_dcbx_cfg = hw->local_dcbx_config;
5658
5659         /* Reset the old DCBx configuration data */
5660         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5661         /* Get updated DCBX data from firmware */
5662         ret = i40e_get_dcb_config(&pf->hw);
5663         if (ret) {
5664                 dev_info(&pf->pdev->dev,
5665                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5666                          i40e_stat_str(&pf->hw, ret),
5667                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5668                 goto exit;
5669         }
5670
5671         /* No change detected in DCBX configs */
5672         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5673                     sizeof(tmp_dcbx_cfg))) {
5674                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5675                 goto exit;
5676         }
5677
5678         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5679                                                &hw->local_dcbx_config);
5680
5681         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5682
5683         if (!need_reconfig)
5684                 goto exit;
5685
5686         /* Enable DCB tagging only when more than one TC */
5687         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5688                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5689         else
5690                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5691
5692         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5693         /* Reconfiguration needed quiesce all VSIs */
5694         i40e_pf_quiesce_all_vsi(pf);
5695
5696         /* Changes in configuration update VEB/VSI */
5697         i40e_dcb_reconfigure(pf);
5698
5699         ret = i40e_resume_port_tx(pf);
5700
5701         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5702         /* In case of error no point in resuming VSIs */
5703         if (ret)
5704                 goto exit;
5705
5706         /* Wait for the PF's Tx queues to be disabled */
5707         ret = i40e_pf_wait_txq_disabled(pf);
5708         if (ret) {
5709                 /* Schedule PF reset to recover */
5710                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5711                 i40e_service_event_schedule(pf);
5712         } else {
5713                 i40e_pf_unquiesce_all_vsi(pf);
5714         }
5715
5716 exit:
5717         return ret;
5718 }
5719 #endif /* CONFIG_I40E_DCB */
5720
5721 /**
5722  * i40e_do_reset_safe - Protected reset path for userland calls.
5723  * @pf: board private structure
5724  * @reset_flags: which reset is requested
5725  *
5726  **/
5727 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5728 {
5729         rtnl_lock();
5730         i40e_do_reset(pf, reset_flags);
5731         rtnl_unlock();
5732 }
5733
5734 /**
5735  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5736  * @pf: board private structure
5737  * @e: event info posted on ARQ
5738  *
5739  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5740  * and VF queues
5741  **/
5742 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5743                                            struct i40e_arq_event_info *e)
5744 {
5745         struct i40e_aqc_lan_overflow *data =
5746                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5747         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5748         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5749         struct i40e_hw *hw = &pf->hw;
5750         struct i40e_vf *vf;
5751         u16 vf_id;
5752
5753         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5754                 queue, qtx_ctl);
5755
5756         /* Queue belongs to VF, find the VF and issue VF reset */
5757         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5758             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5759                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5760                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5761                 vf_id -= hw->func_caps.vf_base_id;
5762                 vf = &pf->vf[vf_id];
5763                 i40e_vc_notify_vf_reset(vf);
5764                 /* Allow VF to process pending reset notification */
5765                 msleep(20);
5766                 i40e_reset_vf(vf, false);
5767         }
5768 }
5769
5770 /**
5771  * i40e_service_event_complete - Finish up the service event
5772  * @pf: board private structure
5773  **/
5774 static void i40e_service_event_complete(struct i40e_pf *pf)
5775 {
5776         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5777
5778         /* flush memory to make sure state is correct before next watchog */
5779         smp_mb__before_atomic();
5780         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5781 }
5782
5783 /**
5784  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5785  * @pf: board private structure
5786  **/
5787 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5788 {
5789         u32 val, fcnt_prog;
5790
5791         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5792         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5793         return fcnt_prog;
5794 }
5795
5796 /**
5797  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5798  * @pf: board private structure
5799  **/
5800 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5801 {
5802         u32 val, fcnt_prog;
5803
5804         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5805         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5806                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5807                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5808         return fcnt_prog;
5809 }
5810
5811 /**
5812  * i40e_get_global_fd_count - Get total FD filters programmed on device
5813  * @pf: board private structure
5814  **/
5815 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5816 {
5817         u32 val, fcnt_prog;
5818
5819         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5820         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5821                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5822                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5823         return fcnt_prog;
5824 }
5825
5826 /**
5827  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5828  * @pf: board private structure
5829  **/
5830 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5831 {
5832         struct i40e_fdir_filter *filter;
5833         u32 fcnt_prog, fcnt_avail;
5834         struct hlist_node *node;
5835
5836         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5837                 return;
5838
5839         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5840          * to re-enable
5841          */
5842         fcnt_prog = i40e_get_global_fd_count(pf);
5843         fcnt_avail = pf->fdir_pf_filter_count;
5844         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5845             (pf->fd_add_err == 0) ||
5846             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5847                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5848                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5849                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5850                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5851                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5852                 }
5853         }
5854         /* Wait for some more space to be available to turn on ATR */
5855         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5856                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5857                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5858                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5859                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5860                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5861                 }
5862         }
5863
5864         /* if hw had a problem adding a filter, delete it */
5865         if (pf->fd_inv > 0) {
5866                 hlist_for_each_entry_safe(filter, node,
5867                                           &pf->fdir_filter_list, fdir_node) {
5868                         if (filter->fd_id == pf->fd_inv) {
5869                                 hlist_del(&filter->fdir_node);
5870                                 kfree(filter);
5871                                 pf->fdir_pf_active_filters--;
5872                         }
5873                 }
5874         }
5875 }
5876
5877 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5878 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5879 /**
5880  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5881  * @pf: board private structure
5882  **/
5883 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5884 {
5885         unsigned long min_flush_time;
5886         int flush_wait_retry = 50;
5887         bool disable_atr = false;
5888         int fd_room;
5889         int reg;
5890
5891         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5892                 return;
5893
5894         if (!time_after(jiffies, pf->fd_flush_timestamp +
5895                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5896                 return;
5897
5898         /* If the flush is happening too quick and we have mostly SB rules we
5899          * should not re-enable ATR for some time.
5900          */
5901         min_flush_time = pf->fd_flush_timestamp +
5902                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5903         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5904
5905         if (!(time_after(jiffies, min_flush_time)) &&
5906             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5907                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5908                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5909                 disable_atr = true;
5910         }
5911
5912         pf->fd_flush_timestamp = jiffies;
5913         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5914         /* flush all filters */
5915         wr32(&pf->hw, I40E_PFQF_CTL_1,
5916              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5917         i40e_flush(&pf->hw);
5918         pf->fd_flush_cnt++;
5919         pf->fd_add_err = 0;
5920         do {
5921                 /* Check FD flush status every 5-6msec */
5922                 usleep_range(5000, 6000);
5923                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5924                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5925                         break;
5926         } while (flush_wait_retry--);
5927         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5928                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5929         } else {
5930                 /* replay sideband filters */
5931                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5932                 if (!disable_atr)
5933                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5934                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5935                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5936                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5937         }
5938
5939 }
5940
5941 /**
5942  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5943  * @pf: board private structure
5944  **/
5945 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5946 {
5947         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5948 }
5949
5950 /* We can see up to 256 filter programming desc in transit if the filters are
5951  * being applied really fast; before we see the first
5952  * filter miss error on Rx queue 0. Accumulating enough error messages before
5953  * reacting will make sure we don't cause flush too often.
5954  */
5955 #define I40E_MAX_FD_PROGRAM_ERROR 256
5956
5957 /**
5958  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5959  * @pf: board private structure
5960  **/
5961 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5962 {
5963
5964         /* if interface is down do nothing */
5965         if (test_bit(__I40E_DOWN, &pf->state))
5966                 return;
5967
5968         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5969                 return;
5970
5971         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5972                 i40e_fdir_flush_and_replay(pf);
5973
5974         i40e_fdir_check_and_reenable(pf);
5975
5976 }
5977
5978 /**
5979  * i40e_vsi_link_event - notify VSI of a link event
5980  * @vsi: vsi to be notified
5981  * @link_up: link up or down
5982  **/
5983 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5984 {
5985         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5986                 return;
5987
5988         switch (vsi->type) {
5989         case I40E_VSI_MAIN:
5990 #ifdef I40E_FCOE
5991         case I40E_VSI_FCOE:
5992 #endif
5993                 if (!vsi->netdev || !vsi->netdev_registered)
5994                         break;
5995
5996                 if (link_up) {
5997                         netif_carrier_on(vsi->netdev);
5998                         netif_tx_wake_all_queues(vsi->netdev);
5999                 } else {
6000                         netif_carrier_off(vsi->netdev);
6001                         netif_tx_stop_all_queues(vsi->netdev);
6002                 }
6003                 break;
6004
6005         case I40E_VSI_SRIOV:
6006         case I40E_VSI_VMDQ2:
6007         case I40E_VSI_CTRL:
6008         case I40E_VSI_MIRROR:
6009         default:
6010                 /* there is no notification for other VSIs */
6011                 break;
6012         }
6013 }
6014
6015 /**
6016  * i40e_veb_link_event - notify elements on the veb of a link event
6017  * @veb: veb to be notified
6018  * @link_up: link up or down
6019  **/
6020 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6021 {
6022         struct i40e_pf *pf;
6023         int i;
6024
6025         if (!veb || !veb->pf)
6026                 return;
6027         pf = veb->pf;
6028
6029         /* depth first... */
6030         for (i = 0; i < I40E_MAX_VEB; i++)
6031                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6032                         i40e_veb_link_event(pf->veb[i], link_up);
6033
6034         /* ... now the local VSIs */
6035         for (i = 0; i < pf->num_alloc_vsi; i++)
6036                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6037                         i40e_vsi_link_event(pf->vsi[i], link_up);
6038 }
6039
6040 /**
6041  * i40e_link_event - Update netif_carrier status
6042  * @pf: board private structure
6043  **/
6044 static void i40e_link_event(struct i40e_pf *pf)
6045 {
6046         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6047         u8 new_link_speed, old_link_speed;
6048         i40e_status status;
6049         bool new_link, old_link;
6050
6051         /* set this to force the get_link_status call to refresh state */
6052         pf->hw.phy.get_link_info = true;
6053
6054         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6055
6056         status = i40e_get_link_status(&pf->hw, &new_link);
6057         if (status) {
6058                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6059                         status);
6060                 return;
6061         }
6062
6063         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6064         new_link_speed = pf->hw.phy.link_info.link_speed;
6065
6066         if (new_link == old_link &&
6067             new_link_speed == old_link_speed &&
6068             (test_bit(__I40E_DOWN, &vsi->state) ||
6069              new_link == netif_carrier_ok(vsi->netdev)))
6070                 return;
6071
6072         if (!test_bit(__I40E_DOWN, &vsi->state))
6073                 i40e_print_link_message(vsi, new_link);
6074
6075         /* Notify the base of the switch tree connected to
6076          * the link.  Floating VEBs are not notified.
6077          */
6078         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6079                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6080         else
6081                 i40e_vsi_link_event(vsi, new_link);
6082
6083         if (pf->vf)
6084                 i40e_vc_notify_link_state(pf);
6085
6086         if (pf->flags & I40E_FLAG_PTP)
6087                 i40e_ptp_set_increment(pf);
6088 }
6089
6090 /**
6091  * i40e_watchdog_subtask - periodic checks not using event driven response
6092  * @pf: board private structure
6093  **/
6094 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6095 {
6096         int i;
6097
6098         /* if interface is down do nothing */
6099         if (test_bit(__I40E_DOWN, &pf->state) ||
6100             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6101                 return;
6102
6103         /* make sure we don't do these things too often */
6104         if (time_before(jiffies, (pf->service_timer_previous +
6105                                   pf->service_timer_period)))
6106                 return;
6107         pf->service_timer_previous = jiffies;
6108
6109         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6110                 i40e_link_event(pf);
6111
6112         /* Update the stats for active netdevs so the network stack
6113          * can look at updated numbers whenever it cares to
6114          */
6115         for (i = 0; i < pf->num_alloc_vsi; i++)
6116                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6117                         i40e_update_stats(pf->vsi[i]);
6118
6119         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6120                 /* Update the stats for the active switching components */
6121                 for (i = 0; i < I40E_MAX_VEB; i++)
6122                         if (pf->veb[i])
6123                                 i40e_update_veb_stats(pf->veb[i]);
6124         }
6125
6126         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6127 }
6128
6129 /**
6130  * i40e_reset_subtask - Set up for resetting the device and driver
6131  * @pf: board private structure
6132  **/
6133 static void i40e_reset_subtask(struct i40e_pf *pf)
6134 {
6135         u32 reset_flags = 0;
6136
6137         rtnl_lock();
6138         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6139                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6140                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6141         }
6142         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6143                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6144                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6145         }
6146         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6147                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6148                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6149         }
6150         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6151                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6152                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6153         }
6154         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6155                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6156                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6157         }
6158
6159         /* If there's a recovery already waiting, it takes
6160          * precedence before starting a new reset sequence.
6161          */
6162         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6163                 i40e_handle_reset_warning(pf);
6164                 goto unlock;
6165         }
6166
6167         /* If we're already down or resetting, just bail */
6168         if (reset_flags &&
6169             !test_bit(__I40E_DOWN, &pf->state) &&
6170             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6171                 i40e_do_reset(pf, reset_flags);
6172
6173 unlock:
6174         rtnl_unlock();
6175 }
6176
6177 /**
6178  * i40e_handle_link_event - Handle link event
6179  * @pf: board private structure
6180  * @e: event info posted on ARQ
6181  **/
6182 static void i40e_handle_link_event(struct i40e_pf *pf,
6183                                    struct i40e_arq_event_info *e)
6184 {
6185         struct i40e_hw *hw = &pf->hw;
6186         struct i40e_aqc_get_link_status *status =
6187                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6188
6189         /* save off old link status information */
6190         hw->phy.link_info_old = hw->phy.link_info;
6191
6192         /* Do a new status request to re-enable LSE reporting
6193          * and load new status information into the hw struct
6194          * This completely ignores any state information
6195          * in the ARQ event info, instead choosing to always
6196          * issue the AQ update link status command.
6197          */
6198         i40e_link_event(pf);
6199
6200         /* check for unqualified module, if link is down */
6201         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6202             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6203             (!(status->link_info & I40E_AQ_LINK_UP)))
6204                 dev_err(&pf->pdev->dev,
6205                         "The driver failed to link because an unqualified module was detected.\n");
6206 }
6207
6208 /**
6209  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6210  * @pf: board private structure
6211  **/
6212 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6213 {
6214         struct i40e_arq_event_info event;
6215         struct i40e_hw *hw = &pf->hw;
6216         u16 pending, i = 0;
6217         i40e_status ret;
6218         u16 opcode;
6219         u32 oldval;
6220         u32 val;
6221
6222         /* Do not run clean AQ when PF reset fails */
6223         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6224                 return;
6225
6226         /* check for error indications */
6227         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6228         oldval = val;
6229         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6230                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6231                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6232         }
6233         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6234                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6235                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6236         }
6237         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6238                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6239                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6240         }
6241         if (oldval != val)
6242                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6243
6244         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6245         oldval = val;
6246         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6247                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6248                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6249         }
6250         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6251                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6252                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6253         }
6254         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6255                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6256                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6257         }
6258         if (oldval != val)
6259                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6260
6261         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6262         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6263         if (!event.msg_buf)
6264                 return;
6265
6266         do {
6267                 ret = i40e_clean_arq_element(hw, &event, &pending);
6268                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6269                         break;
6270                 else if (ret) {
6271                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6272                         break;
6273                 }
6274
6275                 opcode = le16_to_cpu(event.desc.opcode);
6276                 switch (opcode) {
6277
6278                 case i40e_aqc_opc_get_link_status:
6279                         i40e_handle_link_event(pf, &event);
6280                         break;
6281                 case i40e_aqc_opc_send_msg_to_pf:
6282                         ret = i40e_vc_process_vf_msg(pf,
6283                                         le16_to_cpu(event.desc.retval),
6284                                         le32_to_cpu(event.desc.cookie_high),
6285                                         le32_to_cpu(event.desc.cookie_low),
6286                                         event.msg_buf,
6287                                         event.msg_len);
6288                         break;
6289                 case i40e_aqc_opc_lldp_update_mib:
6290                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6291 #ifdef CONFIG_I40E_DCB
6292                         rtnl_lock();
6293                         ret = i40e_handle_lldp_event(pf, &event);
6294                         rtnl_unlock();
6295 #endif /* CONFIG_I40E_DCB */
6296                         break;
6297                 case i40e_aqc_opc_event_lan_overflow:
6298                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6299                         i40e_handle_lan_overflow_event(pf, &event);
6300                         break;
6301                 case i40e_aqc_opc_send_msg_to_peer:
6302                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6303                         break;
6304                 case i40e_aqc_opc_nvm_erase:
6305                 case i40e_aqc_opc_nvm_update:
6306                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6307                         break;
6308                 default:
6309                         dev_info(&pf->pdev->dev,
6310                                  "ARQ Error: Unknown event 0x%04x received\n",
6311                                  opcode);
6312                         break;
6313                 }
6314         } while (pending && (i++ < pf->adminq_work_limit));
6315
6316         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6317         /* re-enable Admin queue interrupt cause */
6318         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6319         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6320         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6321         i40e_flush(hw);
6322
6323         kfree(event.msg_buf);
6324 }
6325
6326 /**
6327  * i40e_verify_eeprom - make sure eeprom is good to use
6328  * @pf: board private structure
6329  **/
6330 static void i40e_verify_eeprom(struct i40e_pf *pf)
6331 {
6332         int err;
6333
6334         err = i40e_diag_eeprom_test(&pf->hw);
6335         if (err) {
6336                 /* retry in case of garbage read */
6337                 err = i40e_diag_eeprom_test(&pf->hw);
6338                 if (err) {
6339                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6340                                  err);
6341                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6342                 }
6343         }
6344
6345         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6346                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6347                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6348         }
6349 }
6350
6351 /**
6352  * i40e_enable_pf_switch_lb
6353  * @pf: pointer to the PF structure
6354  *
6355  * enable switch loop back or die - no point in a return value
6356  **/
6357 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6358 {
6359         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6360         struct i40e_vsi_context ctxt;
6361         int ret;
6362
6363         ctxt.seid = pf->main_vsi_seid;
6364         ctxt.pf_num = pf->hw.pf_id;
6365         ctxt.vf_num = 0;
6366         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6367         if (ret) {
6368                 dev_info(&pf->pdev->dev,
6369                          "couldn't get PF vsi config, err %s aq_err %s\n",
6370                          i40e_stat_str(&pf->hw, ret),
6371                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6372                 return;
6373         }
6374         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6375         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6376         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6377
6378         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6379         if (ret) {
6380                 dev_info(&pf->pdev->dev,
6381                          "update vsi switch failed, err %s aq_err %s\n",
6382                          i40e_stat_str(&pf->hw, ret),
6383                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6384         }
6385 }
6386
6387 /**
6388  * i40e_disable_pf_switch_lb
6389  * @pf: pointer to the PF structure
6390  *
6391  * disable switch loop back or die - no point in a return value
6392  **/
6393 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6394 {
6395         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6396         struct i40e_vsi_context ctxt;
6397         int ret;
6398
6399         ctxt.seid = pf->main_vsi_seid;
6400         ctxt.pf_num = pf->hw.pf_id;
6401         ctxt.vf_num = 0;
6402         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6403         if (ret) {
6404                 dev_info(&pf->pdev->dev,
6405                          "couldn't get PF vsi config, err %s aq_err %s\n",
6406                          i40e_stat_str(&pf->hw, ret),
6407                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6408                 return;
6409         }
6410         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6411         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6412         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6413
6414         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6415         if (ret) {
6416                 dev_info(&pf->pdev->dev,
6417                          "update vsi switch failed, err %s aq_err %s\n",
6418                          i40e_stat_str(&pf->hw, ret),
6419                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6420         }
6421 }
6422
6423 /**
6424  * i40e_config_bridge_mode - Configure the HW bridge mode
6425  * @veb: pointer to the bridge instance
6426  *
6427  * Configure the loop back mode for the LAN VSI that is downlink to the
6428  * specified HW bridge instance. It is expected this function is called
6429  * when a new HW bridge is instantiated.
6430  **/
6431 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6432 {
6433         struct i40e_pf *pf = veb->pf;
6434
6435         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6436                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6437                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6438         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6439                 i40e_disable_pf_switch_lb(pf);
6440         else
6441                 i40e_enable_pf_switch_lb(pf);
6442 }
6443
6444 /**
6445  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6446  * @veb: pointer to the VEB instance
6447  *
6448  * This is a recursive function that first builds the attached VSIs then
6449  * recurses in to build the next layer of VEB.  We track the connections
6450  * through our own index numbers because the seid's from the HW could
6451  * change across the reset.
6452  **/
6453 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6454 {
6455         struct i40e_vsi *ctl_vsi = NULL;
6456         struct i40e_pf *pf = veb->pf;
6457         int v, veb_idx;
6458         int ret;
6459
6460         /* build VSI that owns this VEB, temporarily attached to base VEB */
6461         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6462                 if (pf->vsi[v] &&
6463                     pf->vsi[v]->veb_idx == veb->idx &&
6464                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6465                         ctl_vsi = pf->vsi[v];
6466                         break;
6467                 }
6468         }
6469         if (!ctl_vsi) {
6470                 dev_info(&pf->pdev->dev,
6471                          "missing owner VSI for veb_idx %d\n", veb->idx);
6472                 ret = -ENOENT;
6473                 goto end_reconstitute;
6474         }
6475         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6476                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6477         ret = i40e_add_vsi(ctl_vsi);
6478         if (ret) {
6479                 dev_info(&pf->pdev->dev,
6480                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6481                          veb->idx, ret);
6482                 goto end_reconstitute;
6483         }
6484         i40e_vsi_reset_stats(ctl_vsi);
6485
6486         /* create the VEB in the switch and move the VSI onto the VEB */
6487         ret = i40e_add_veb(veb, ctl_vsi);
6488         if (ret)
6489                 goto end_reconstitute;
6490
6491         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6492                 veb->bridge_mode = BRIDGE_MODE_VEB;
6493         else
6494                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6495         i40e_config_bridge_mode(veb);
6496
6497         /* create the remaining VSIs attached to this VEB */
6498         for (v = 0; v < pf->num_alloc_vsi; v++) {
6499                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6500                         continue;
6501
6502                 if (pf->vsi[v]->veb_idx == veb->idx) {
6503                         struct i40e_vsi *vsi = pf->vsi[v];
6504
6505                         vsi->uplink_seid = veb->seid;
6506                         ret = i40e_add_vsi(vsi);
6507                         if (ret) {
6508                                 dev_info(&pf->pdev->dev,
6509                                          "rebuild of vsi_idx %d failed: %d\n",
6510                                          v, ret);
6511                                 goto end_reconstitute;
6512                         }
6513                         i40e_vsi_reset_stats(vsi);
6514                 }
6515         }
6516
6517         /* create any VEBs attached to this VEB - RECURSION */
6518         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6519                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6520                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6521                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6522                         if (ret)
6523                                 break;
6524                 }
6525         }
6526
6527 end_reconstitute:
6528         return ret;
6529 }
6530
6531 /**
6532  * i40e_get_capabilities - get info about the HW
6533  * @pf: the PF struct
6534  **/
6535 static int i40e_get_capabilities(struct i40e_pf *pf)
6536 {
6537         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6538         u16 data_size;
6539         int buf_len;
6540         int err;
6541
6542         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6543         do {
6544                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6545                 if (!cap_buf)
6546                         return -ENOMEM;
6547
6548                 /* this loads the data into the hw struct for us */
6549                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6550                                             &data_size,
6551                                             i40e_aqc_opc_list_func_capabilities,
6552                                             NULL);
6553                 /* data loaded, buffer no longer needed */
6554                 kfree(cap_buf);
6555
6556                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6557                         /* retry with a larger buffer */
6558                         buf_len = data_size;
6559                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6560                         dev_info(&pf->pdev->dev,
6561                                  "capability discovery failed, err %s aq_err %s\n",
6562                                  i40e_stat_str(&pf->hw, err),
6563                                  i40e_aq_str(&pf->hw,
6564                                              pf->hw.aq.asq_last_status));
6565                         return -ENODEV;
6566                 }
6567         } while (err);
6568
6569         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6570                 dev_info(&pf->pdev->dev,
6571                          "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",
6572                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6573                          pf->hw.func_caps.num_msix_vectors,
6574                          pf->hw.func_caps.num_msix_vectors_vf,
6575                          pf->hw.func_caps.fd_filters_guaranteed,
6576                          pf->hw.func_caps.fd_filters_best_effort,
6577                          pf->hw.func_caps.num_tx_qp,
6578                          pf->hw.func_caps.num_vsis);
6579
6580 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6581                        + pf->hw.func_caps.num_vfs)
6582         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6583                 dev_info(&pf->pdev->dev,
6584                          "got num_vsis %d, setting num_vsis to %d\n",
6585                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6586                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6587         }
6588
6589         return 0;
6590 }
6591
6592 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6593
6594 /**
6595  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6596  * @pf: board private structure
6597  **/
6598 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6599 {
6600         struct i40e_vsi *vsi;
6601         int i;
6602
6603         /* quick workaround for an NVM issue that leaves a critical register
6604          * uninitialized
6605          */
6606         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6607                 static const u32 hkey[] = {
6608                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6609                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6610                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6611                         0x95b3a76d};
6612
6613                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6614                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6615         }
6616
6617         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6618                 return;
6619
6620         /* find existing VSI and see if it needs configuring */
6621         vsi = NULL;
6622         for (i = 0; i < pf->num_alloc_vsi; i++) {
6623                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6624                         vsi = pf->vsi[i];
6625                         break;
6626                 }
6627         }
6628
6629         /* create a new VSI if none exists */
6630         if (!vsi) {
6631                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6632                                      pf->vsi[pf->lan_vsi]->seid, 0);
6633                 if (!vsi) {
6634                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6635                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6636                         return;
6637                 }
6638         }
6639
6640         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6641 }
6642
6643 /**
6644  * i40e_fdir_teardown - release the Flow Director resources
6645  * @pf: board private structure
6646  **/
6647 static void i40e_fdir_teardown(struct i40e_pf *pf)
6648 {
6649         int i;
6650
6651         i40e_fdir_filter_exit(pf);
6652         for (i = 0; i < pf->num_alloc_vsi; i++) {
6653                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6654                         i40e_vsi_release(pf->vsi[i]);
6655                         break;
6656                 }
6657         }
6658 }
6659
6660 /**
6661  * i40e_prep_for_reset - prep for the core to reset
6662  * @pf: board private structure
6663  *
6664  * Close up the VFs and other things in prep for PF Reset.
6665   **/
6666 static void i40e_prep_for_reset(struct i40e_pf *pf)
6667 {
6668         struct i40e_hw *hw = &pf->hw;
6669         i40e_status ret = 0;
6670         u32 v;
6671
6672         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6673         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6674                 return;
6675
6676         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6677
6678         /* quiesce the VSIs and their queues that are not already DOWN */
6679         i40e_pf_quiesce_all_vsi(pf);
6680
6681         for (v = 0; v < pf->num_alloc_vsi; v++) {
6682                 if (pf->vsi[v])
6683                         pf->vsi[v]->seid = 0;
6684         }
6685
6686         i40e_shutdown_adminq(&pf->hw);
6687
6688         /* call shutdown HMC */
6689         if (hw->hmc.hmc_obj) {
6690                 ret = i40e_shutdown_lan_hmc(hw);
6691                 if (ret)
6692                         dev_warn(&pf->pdev->dev,
6693                                  "shutdown_lan_hmc failed: %d\n", ret);
6694         }
6695 }
6696
6697 /**
6698  * i40e_send_version - update firmware with driver version
6699  * @pf: PF struct
6700  */
6701 static void i40e_send_version(struct i40e_pf *pf)
6702 {
6703         struct i40e_driver_version dv;
6704
6705         dv.major_version = DRV_VERSION_MAJOR;
6706         dv.minor_version = DRV_VERSION_MINOR;
6707         dv.build_version = DRV_VERSION_BUILD;
6708         dv.subbuild_version = 0;
6709         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6710         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6711 }
6712
6713 /**
6714  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6715  * @pf: board private structure
6716  * @reinit: if the Main VSI needs to re-initialized.
6717  **/
6718 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6719 {
6720         struct i40e_hw *hw = &pf->hw;
6721         u8 set_fc_aq_fail = 0;
6722         i40e_status ret;
6723         u32 val;
6724         u32 v;
6725
6726         /* Now we wait for GRST to settle out.
6727          * We don't have to delete the VEBs or VSIs from the hw switch
6728          * because the reset will make them disappear.
6729          */
6730         ret = i40e_pf_reset(hw);
6731         if (ret) {
6732                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6733                 set_bit(__I40E_RESET_FAILED, &pf->state);
6734                 goto clear_recovery;
6735         }
6736         pf->pfr_count++;
6737
6738         if (test_bit(__I40E_DOWN, &pf->state))
6739                 goto clear_recovery;
6740         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6741
6742         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6743         ret = i40e_init_adminq(&pf->hw);
6744         if (ret) {
6745                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6746                          i40e_stat_str(&pf->hw, ret),
6747                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6748                 goto clear_recovery;
6749         }
6750
6751         /* re-verify the eeprom if we just had an EMP reset */
6752         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6753                 i40e_verify_eeprom(pf);
6754
6755         i40e_clear_pxe_mode(hw);
6756         ret = i40e_get_capabilities(pf);
6757         if (ret)
6758                 goto end_core_reset;
6759
6760         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6761                                 hw->func_caps.num_rx_qp,
6762                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6763         if (ret) {
6764                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6765                 goto end_core_reset;
6766         }
6767         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6768         if (ret) {
6769                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6770                 goto end_core_reset;
6771         }
6772
6773 #ifdef CONFIG_I40E_DCB
6774         ret = i40e_init_pf_dcb(pf);
6775         if (ret) {
6776                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6777                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6778                 /* Continue without DCB enabled */
6779         }
6780 #endif /* CONFIG_I40E_DCB */
6781 #ifdef I40E_FCOE
6782         i40e_init_pf_fcoe(pf);
6783
6784 #endif
6785         /* do basic switch setup */
6786         ret = i40e_setup_pf_switch(pf, reinit);
6787         if (ret)
6788                 goto end_core_reset;
6789
6790         /* driver is only interested in link up/down and module qualification
6791          * reports from firmware
6792          */
6793         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6794                                        I40E_AQ_EVENT_LINK_UPDOWN |
6795                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6796         if (ret)
6797                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6798                          i40e_stat_str(&pf->hw, ret),
6799                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6800
6801         /* make sure our flow control settings are restored */
6802         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6803         if (ret)
6804                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6805                         i40e_stat_str(&pf->hw, ret),
6806                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6807
6808         /* Rebuild the VSIs and VEBs that existed before reset.
6809          * They are still in our local switch element arrays, so only
6810          * need to rebuild the switch model in the HW.
6811          *
6812          * If there were VEBs but the reconstitution failed, we'll try
6813          * try to recover minimal use by getting the basic PF VSI working.
6814          */
6815         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6816                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6817                 /* find the one VEB connected to the MAC, and find orphans */
6818                 for (v = 0; v < I40E_MAX_VEB; v++) {
6819                         if (!pf->veb[v])
6820                                 continue;
6821
6822                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6823                             pf->veb[v]->uplink_seid == 0) {
6824                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6825
6826                                 if (!ret)
6827                                         continue;
6828
6829                                 /* If Main VEB failed, we're in deep doodoo,
6830                                  * so give up rebuilding the switch and set up
6831                                  * for minimal rebuild of PF VSI.
6832                                  * If orphan failed, we'll report the error
6833                                  * but try to keep going.
6834                                  */
6835                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6836                                         dev_info(&pf->pdev->dev,
6837                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6838                                                  ret);
6839                                         pf->vsi[pf->lan_vsi]->uplink_seid
6840                                                                 = pf->mac_seid;
6841                                         break;
6842                                 } else if (pf->veb[v]->uplink_seid == 0) {
6843                                         dev_info(&pf->pdev->dev,
6844                                                  "rebuild of orphan VEB failed: %d\n",
6845                                                  ret);
6846                                 }
6847                         }
6848                 }
6849         }
6850
6851         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6852                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6853                 /* no VEB, so rebuild only the Main VSI */
6854                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6855                 if (ret) {
6856                         dev_info(&pf->pdev->dev,
6857                                  "rebuild of Main VSI failed: %d\n", ret);
6858                         goto end_core_reset;
6859                 }
6860         }
6861
6862         /* Reconfigure hardware for allowing smaller MSS in the case
6863          * of TSO, so that we avoid the MDD being fired and causing
6864          * a reset in the case of small MSS+TSO.
6865          */
6866 #define I40E_REG_MSS          0x000E64DC
6867 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6868 #define I40E_64BYTE_MSS       0x400000
6869         val = rd32(hw, I40E_REG_MSS);
6870         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6871                 val &= ~I40E_REG_MSS_MIN_MASK;
6872                 val |= I40E_64BYTE_MSS;
6873                 wr32(hw, I40E_REG_MSS, val);
6874         }
6875
6876         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6877             (pf->hw.aq.fw_maj_ver < 4)) {
6878                 msleep(75);
6879                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6880                 if (ret)
6881                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6882                                  i40e_stat_str(&pf->hw, ret),
6883                                  i40e_aq_str(&pf->hw,
6884                                              pf->hw.aq.asq_last_status));
6885         }
6886         /* reinit the misc interrupt */
6887         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6888                 ret = i40e_setup_misc_vector(pf);
6889
6890         /* Add a filter to drop all Flow control frames from any VSI from being
6891          * transmitted. By doing so we stop a malicious VF from sending out
6892          * PAUSE or PFC frames and potentially controlling traffic for other
6893          * PF/VF VSIs.
6894          * The FW can still send Flow control frames if enabled.
6895          */
6896         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6897                                                        pf->main_vsi_seid);
6898
6899         /* restart the VSIs that were rebuilt and running before the reset */
6900         i40e_pf_unquiesce_all_vsi(pf);
6901
6902         if (pf->num_alloc_vfs) {
6903                 for (v = 0; v < pf->num_alloc_vfs; v++)
6904                         i40e_reset_vf(&pf->vf[v], true);
6905         }
6906
6907         /* tell the firmware that we're starting */
6908         i40e_send_version(pf);
6909
6910 end_core_reset:
6911         clear_bit(__I40E_RESET_FAILED, &pf->state);
6912 clear_recovery:
6913         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6914 }
6915
6916 /**
6917  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6918  * @pf: board private structure
6919  *
6920  * Close up the VFs and other things in prep for a Core Reset,
6921  * then get ready to rebuild the world.
6922  **/
6923 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6924 {
6925         i40e_prep_for_reset(pf);
6926         i40e_reset_and_rebuild(pf, false);
6927 }
6928
6929 /**
6930  * i40e_handle_mdd_event
6931  * @pf: pointer to the PF structure
6932  *
6933  * Called from the MDD irq handler to identify possibly malicious vfs
6934  **/
6935 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6936 {
6937         struct i40e_hw *hw = &pf->hw;
6938         bool mdd_detected = false;
6939         bool pf_mdd_detected = false;
6940         struct i40e_vf *vf;
6941         u32 reg;
6942         int i;
6943
6944         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6945                 return;
6946
6947         /* find what triggered the MDD event */
6948         reg = rd32(hw, I40E_GL_MDET_TX);
6949         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6950                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6951                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6952                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6953                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6954                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6955                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6956                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6957                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6958                                 pf->hw.func_caps.base_queue;
6959                 if (netif_msg_tx_err(pf))
6960                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6961                                  event, queue, pf_num, vf_num);
6962                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6963                 mdd_detected = true;
6964         }
6965         reg = rd32(hw, I40E_GL_MDET_RX);
6966         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6967                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6968                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6969                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6970                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6971                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6972                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6973                                 pf->hw.func_caps.base_queue;
6974                 if (netif_msg_rx_err(pf))
6975                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6976                                  event, queue, func);
6977                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6978                 mdd_detected = true;
6979         }
6980
6981         if (mdd_detected) {
6982                 reg = rd32(hw, I40E_PF_MDET_TX);
6983                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6984                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6985                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6986                         pf_mdd_detected = true;
6987                 }
6988                 reg = rd32(hw, I40E_PF_MDET_RX);
6989                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6990                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6991                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6992                         pf_mdd_detected = true;
6993                 }
6994                 /* Queue belongs to the PF, initiate a reset */
6995                 if (pf_mdd_detected) {
6996                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6997                         i40e_service_event_schedule(pf);
6998                 }
6999         }
7000
7001         /* see if one of the VFs needs its hand slapped */
7002         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7003                 vf = &(pf->vf[i]);
7004                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7005                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7006                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7007                         vf->num_mdd_events++;
7008                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7009                                  i);
7010                 }
7011
7012                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7013                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7014                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7015                         vf->num_mdd_events++;
7016                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7017                                  i);
7018                 }
7019
7020                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7021                         dev_info(&pf->pdev->dev,
7022                                  "Too many MDD events on VF %d, disabled\n", i);
7023                         dev_info(&pf->pdev->dev,
7024                                  "Use PF Control I/F to re-enable the VF\n");
7025                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7026                 }
7027         }
7028
7029         /* re-enable mdd interrupt cause */
7030         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7031         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7032         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7033         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7034         i40e_flush(hw);
7035 }
7036
7037 #ifdef CONFIG_I40E_VXLAN
7038 /**
7039  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7040  * @pf: board private structure
7041  **/
7042 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7043 {
7044         struct i40e_hw *hw = &pf->hw;
7045         i40e_status ret;
7046         __be16 port;
7047         int i;
7048
7049         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7050                 return;
7051
7052         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7053
7054         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7055                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7056                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7057                         port = pf->vxlan_ports[i];
7058                         if (port)
7059                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7060                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7061                                                      NULL, NULL);
7062                         else
7063                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7064
7065                         if (ret) {
7066                                 dev_info(&pf->pdev->dev,
7067                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7068                                          port ? "add" : "delete",
7069                                          ntohs(port), i,
7070                                          i40e_stat_str(&pf->hw, ret),
7071                                          i40e_aq_str(&pf->hw,
7072                                                     pf->hw.aq.asq_last_status));
7073                                 pf->vxlan_ports[i] = 0;
7074                         }
7075                 }
7076         }
7077 }
7078
7079 #endif
7080 /**
7081  * i40e_service_task - Run the driver's async subtasks
7082  * @work: pointer to work_struct containing our data
7083  **/
7084 static void i40e_service_task(struct work_struct *work)
7085 {
7086         struct i40e_pf *pf = container_of(work,
7087                                           struct i40e_pf,
7088                                           service_task);
7089         unsigned long start_time = jiffies;
7090
7091         /* don't bother with service tasks if a reset is in progress */
7092         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7093                 i40e_service_event_complete(pf);
7094                 return;
7095         }
7096
7097         i40e_detect_recover_hung(pf);
7098         i40e_reset_subtask(pf);
7099         i40e_handle_mdd_event(pf);
7100         i40e_vc_process_vflr_event(pf);
7101         i40e_watchdog_subtask(pf);
7102         i40e_fdir_reinit_subtask(pf);
7103         i40e_sync_filters_subtask(pf);
7104 #ifdef CONFIG_I40E_VXLAN
7105         i40e_sync_vxlan_filters_subtask(pf);
7106 #endif
7107         i40e_clean_adminq_subtask(pf);
7108
7109         i40e_service_event_complete(pf);
7110
7111         /* If the tasks have taken longer than one timer cycle or there
7112          * is more work to be done, reschedule the service task now
7113          * rather than wait for the timer to tick again.
7114          */
7115         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7116             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7117             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7118             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7119                 i40e_service_event_schedule(pf);
7120 }
7121
7122 /**
7123  * i40e_service_timer - timer callback
7124  * @data: pointer to PF struct
7125  **/
7126 static void i40e_service_timer(unsigned long data)
7127 {
7128         struct i40e_pf *pf = (struct i40e_pf *)data;
7129
7130         mod_timer(&pf->service_timer,
7131                   round_jiffies(jiffies + pf->service_timer_period));
7132         i40e_service_event_schedule(pf);
7133 }
7134
7135 /**
7136  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7137  * @vsi: the VSI being configured
7138  **/
7139 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7140 {
7141         struct i40e_pf *pf = vsi->back;
7142
7143         switch (vsi->type) {
7144         case I40E_VSI_MAIN:
7145                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7146                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7147                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7148                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7149                         vsi->num_q_vectors = pf->num_lan_msix;
7150                 else
7151                         vsi->num_q_vectors = 1;
7152
7153                 break;
7154
7155         case I40E_VSI_FDIR:
7156                 vsi->alloc_queue_pairs = 1;
7157                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7158                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7159                 vsi->num_q_vectors = 1;
7160                 break;
7161
7162         case I40E_VSI_VMDQ2:
7163                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7164                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7165                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7166                 vsi->num_q_vectors = pf->num_vmdq_msix;
7167                 break;
7168
7169         case I40E_VSI_SRIOV:
7170                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7171                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7172                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7173                 break;
7174
7175 #ifdef I40E_FCOE
7176         case I40E_VSI_FCOE:
7177                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7178                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7179                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7180                 vsi->num_q_vectors = pf->num_fcoe_msix;
7181                 break;
7182
7183 #endif /* I40E_FCOE */
7184         default:
7185                 WARN_ON(1);
7186                 return -ENODATA;
7187         }
7188
7189         return 0;
7190 }
7191
7192 /**
7193  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7194  * @type: VSI pointer
7195  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7196  *
7197  * On error: returns error code (negative)
7198  * On success: returns 0
7199  **/
7200 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7201 {
7202         int size;
7203         int ret = 0;
7204
7205         /* allocate memory for both Tx and Rx ring pointers */
7206         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7207         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7208         if (!vsi->tx_rings)
7209                 return -ENOMEM;
7210         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7211
7212         if (alloc_qvectors) {
7213                 /* allocate memory for q_vector pointers */
7214                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7215                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7216                 if (!vsi->q_vectors) {
7217                         ret = -ENOMEM;
7218                         goto err_vectors;
7219                 }
7220         }
7221         return ret;
7222
7223 err_vectors:
7224         kfree(vsi->tx_rings);
7225         return ret;
7226 }
7227
7228 /**
7229  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7230  * @pf: board private structure
7231  * @type: type of VSI
7232  *
7233  * On error: returns error code (negative)
7234  * On success: returns vsi index in PF (positive)
7235  **/
7236 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7237 {
7238         int ret = -ENODEV;
7239         struct i40e_vsi *vsi;
7240         int vsi_idx;
7241         int i;
7242
7243         /* Need to protect the allocation of the VSIs at the PF level */
7244         mutex_lock(&pf->switch_mutex);
7245
7246         /* VSI list may be fragmented if VSI creation/destruction has
7247          * been happening.  We can afford to do a quick scan to look
7248          * for any free VSIs in the list.
7249          *
7250          * find next empty vsi slot, looping back around if necessary
7251          */
7252         i = pf->next_vsi;
7253         while (i < pf->num_alloc_vsi && pf->vsi[i])
7254                 i++;
7255         if (i >= pf->num_alloc_vsi) {
7256                 i = 0;
7257                 while (i < pf->next_vsi && pf->vsi[i])
7258                         i++;
7259         }
7260
7261         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7262                 vsi_idx = i;             /* Found one! */
7263         } else {
7264                 ret = -ENODEV;
7265                 goto unlock_pf;  /* out of VSI slots! */
7266         }
7267         pf->next_vsi = ++i;
7268
7269         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7270         if (!vsi) {
7271                 ret = -ENOMEM;
7272                 goto unlock_pf;
7273         }
7274         vsi->type = type;
7275         vsi->back = pf;
7276         set_bit(__I40E_DOWN, &vsi->state);
7277         vsi->flags = 0;
7278         vsi->idx = vsi_idx;
7279         vsi->rx_itr_setting = pf->rx_itr_default;
7280         vsi->tx_itr_setting = pf->tx_itr_default;
7281         vsi->int_rate_limit = 0;
7282         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7283                                 pf->rss_table_size : 64;
7284         vsi->netdev_registered = false;
7285         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7286         INIT_LIST_HEAD(&vsi->mac_filter_list);
7287         vsi->irqs_ready = false;
7288
7289         ret = i40e_set_num_rings_in_vsi(vsi);
7290         if (ret)
7291                 goto err_rings;
7292
7293         ret = i40e_vsi_alloc_arrays(vsi, true);
7294         if (ret)
7295                 goto err_rings;
7296
7297         /* Setup default MSIX irq handler for VSI */
7298         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7299
7300         /* Initialize VSI lock */
7301         spin_lock_init(&vsi->mac_filter_list_lock);
7302         pf->vsi[vsi_idx] = vsi;
7303         ret = vsi_idx;
7304         goto unlock_pf;
7305
7306 err_rings:
7307         pf->next_vsi = i - 1;
7308         kfree(vsi);
7309 unlock_pf:
7310         mutex_unlock(&pf->switch_mutex);
7311         return ret;
7312 }
7313
7314 /**
7315  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7316  * @type: VSI pointer
7317  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7318  *
7319  * On error: returns error code (negative)
7320  * On success: returns 0
7321  **/
7322 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7323 {
7324         /* free the ring and vector containers */
7325         if (free_qvectors) {
7326                 kfree(vsi->q_vectors);
7327                 vsi->q_vectors = NULL;
7328         }
7329         kfree(vsi->tx_rings);
7330         vsi->tx_rings = NULL;
7331         vsi->rx_rings = NULL;
7332 }
7333
7334 /**
7335  * i40e_vsi_clear - Deallocate the VSI provided
7336  * @vsi: the VSI being un-configured
7337  **/
7338 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7339 {
7340         struct i40e_pf *pf;
7341
7342         if (!vsi)
7343                 return 0;
7344
7345         if (!vsi->back)
7346                 goto free_vsi;
7347         pf = vsi->back;
7348
7349         mutex_lock(&pf->switch_mutex);
7350         if (!pf->vsi[vsi->idx]) {
7351                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7352                         vsi->idx, vsi->idx, vsi, vsi->type);
7353                 goto unlock_vsi;
7354         }
7355
7356         if (pf->vsi[vsi->idx] != vsi) {
7357                 dev_err(&pf->pdev->dev,
7358                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7359                         pf->vsi[vsi->idx]->idx,
7360                         pf->vsi[vsi->idx],
7361                         pf->vsi[vsi->idx]->type,
7362                         vsi->idx, vsi, vsi->type);
7363                 goto unlock_vsi;
7364         }
7365
7366         /* updates the PF for this cleared vsi */
7367         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7368         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7369
7370         i40e_vsi_free_arrays(vsi, true);
7371
7372         pf->vsi[vsi->idx] = NULL;
7373         if (vsi->idx < pf->next_vsi)
7374                 pf->next_vsi = vsi->idx;
7375
7376 unlock_vsi:
7377         mutex_unlock(&pf->switch_mutex);
7378 free_vsi:
7379         kfree(vsi);
7380
7381         return 0;
7382 }
7383
7384 /**
7385  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7386  * @vsi: the VSI being cleaned
7387  **/
7388 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7389 {
7390         int i;
7391
7392         if (vsi->tx_rings && vsi->tx_rings[0]) {
7393                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7394                         kfree_rcu(vsi->tx_rings[i], rcu);
7395                         vsi->tx_rings[i] = NULL;
7396                         vsi->rx_rings[i] = NULL;
7397                 }
7398         }
7399 }
7400
7401 /**
7402  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7403  * @vsi: the VSI being configured
7404  **/
7405 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7406 {
7407         struct i40e_ring *tx_ring, *rx_ring;
7408         struct i40e_pf *pf = vsi->back;
7409         int i;
7410
7411         /* Set basic values in the rings to be used later during open() */
7412         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7413                 /* allocate space for both Tx and Rx in one shot */
7414                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7415                 if (!tx_ring)
7416                         goto err_out;
7417
7418                 tx_ring->queue_index = i;
7419                 tx_ring->reg_idx = vsi->base_queue + i;
7420                 tx_ring->ring_active = false;
7421                 tx_ring->vsi = vsi;
7422                 tx_ring->netdev = vsi->netdev;
7423                 tx_ring->dev = &pf->pdev->dev;
7424                 tx_ring->count = vsi->num_desc;
7425                 tx_ring->size = 0;
7426                 tx_ring->dcb_tc = 0;
7427                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7428                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7429                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7430                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7431                 vsi->tx_rings[i] = tx_ring;
7432
7433                 rx_ring = &tx_ring[1];
7434                 rx_ring->queue_index = i;
7435                 rx_ring->reg_idx = vsi->base_queue + i;
7436                 rx_ring->ring_active = false;
7437                 rx_ring->vsi = vsi;
7438                 rx_ring->netdev = vsi->netdev;
7439                 rx_ring->dev = &pf->pdev->dev;
7440                 rx_ring->count = vsi->num_desc;
7441                 rx_ring->size = 0;
7442                 rx_ring->dcb_tc = 0;
7443                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7444                         set_ring_16byte_desc_enabled(rx_ring);
7445                 else
7446                         clear_ring_16byte_desc_enabled(rx_ring);
7447                 vsi->rx_rings[i] = rx_ring;
7448         }
7449
7450         return 0;
7451
7452 err_out:
7453         i40e_vsi_clear_rings(vsi);
7454         return -ENOMEM;
7455 }
7456
7457 /**
7458  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7459  * @pf: board private structure
7460  * @vectors: the number of MSI-X vectors to request
7461  *
7462  * Returns the number of vectors reserved, or error
7463  **/
7464 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7465 {
7466         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7467                                         I40E_MIN_MSIX, vectors);
7468         if (vectors < 0) {
7469                 dev_info(&pf->pdev->dev,
7470                          "MSI-X vector reservation failed: %d\n", vectors);
7471                 vectors = 0;
7472         }
7473
7474         return vectors;
7475 }
7476
7477 /**
7478  * i40e_init_msix - Setup the MSIX capability
7479  * @pf: board private structure
7480  *
7481  * Work with the OS to set up the MSIX vectors needed.
7482  *
7483  * Returns the number of vectors reserved or negative on failure
7484  **/
7485 static int i40e_init_msix(struct i40e_pf *pf)
7486 {
7487         struct i40e_hw *hw = &pf->hw;
7488         int vectors_left;
7489         int v_budget, i;
7490         int v_actual;
7491
7492         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7493                 return -ENODEV;
7494
7495         /* The number of vectors we'll request will be comprised of:
7496          *   - Add 1 for "other" cause for Admin Queue events, etc.
7497          *   - The number of LAN queue pairs
7498          *      - Queues being used for RSS.
7499          *              We don't need as many as max_rss_size vectors.
7500          *              use rss_size instead in the calculation since that
7501          *              is governed by number of cpus in the system.
7502          *      - assumes symmetric Tx/Rx pairing
7503          *   - The number of VMDq pairs
7504 #ifdef I40E_FCOE
7505          *   - The number of FCOE qps.
7506 #endif
7507          * Once we count this up, try the request.
7508          *
7509          * If we can't get what we want, we'll simplify to nearly nothing
7510          * and try again.  If that still fails, we punt.
7511          */
7512         vectors_left = hw->func_caps.num_msix_vectors;
7513         v_budget = 0;
7514
7515         /* reserve one vector for miscellaneous handler */
7516         if (vectors_left) {
7517                 v_budget++;
7518                 vectors_left--;
7519         }
7520
7521         /* reserve vectors for the main PF traffic queues */
7522         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7523         vectors_left -= pf->num_lan_msix;
7524         v_budget += pf->num_lan_msix;
7525
7526         /* reserve one vector for sideband flow director */
7527         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7528                 if (vectors_left) {
7529                         v_budget++;
7530                         vectors_left--;
7531                 } else {
7532                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7533                 }
7534         }
7535
7536 #ifdef I40E_FCOE
7537         /* can we reserve enough for FCoE? */
7538         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7539                 if (!vectors_left)
7540                         pf->num_fcoe_msix = 0;
7541                 else if (vectors_left >= pf->num_fcoe_qps)
7542                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7543                 else
7544                         pf->num_fcoe_msix = 1;
7545                 v_budget += pf->num_fcoe_msix;
7546                 vectors_left -= pf->num_fcoe_msix;
7547         }
7548
7549 #endif
7550         /* any vectors left over go for VMDq support */
7551         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7552                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7553                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7554
7555                 /* if we're short on vectors for what's desired, we limit
7556                  * the queues per vmdq.  If this is still more than are
7557                  * available, the user will need to change the number of
7558                  * queues/vectors used by the PF later with the ethtool
7559                  * channels command
7560                  */
7561                 if (vmdq_vecs < vmdq_vecs_wanted)
7562                         pf->num_vmdq_qps = 1;
7563                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7564
7565                 v_budget += vmdq_vecs;
7566                 vectors_left -= vmdq_vecs;
7567         }
7568
7569         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7570                                    GFP_KERNEL);
7571         if (!pf->msix_entries)
7572                 return -ENOMEM;
7573
7574         for (i = 0; i < v_budget; i++)
7575                 pf->msix_entries[i].entry = i;
7576         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7577
7578         if (v_actual != v_budget) {
7579                 /* If we have limited resources, we will start with no vectors
7580                  * for the special features and then allocate vectors to some
7581                  * of these features based on the policy and at the end disable
7582                  * the features that did not get any vectors.
7583                  */
7584 #ifdef I40E_FCOE
7585                 pf->num_fcoe_qps = 0;
7586                 pf->num_fcoe_msix = 0;
7587 #endif
7588                 pf->num_vmdq_msix = 0;
7589         }
7590
7591         if (v_actual < I40E_MIN_MSIX) {
7592                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7593                 kfree(pf->msix_entries);
7594                 pf->msix_entries = NULL;
7595                 return -ENODEV;
7596
7597         } else if (v_actual == I40E_MIN_MSIX) {
7598                 /* Adjust for minimal MSIX use */
7599                 pf->num_vmdq_vsis = 0;
7600                 pf->num_vmdq_qps = 0;
7601                 pf->num_lan_qps = 1;
7602                 pf->num_lan_msix = 1;
7603
7604         } else if (v_actual != v_budget) {
7605                 int vec;
7606
7607                 /* reserve the misc vector */
7608                 vec = v_actual - 1;
7609
7610                 /* Scale vector usage down */
7611                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7612                 pf->num_vmdq_vsis = 1;
7613                 pf->num_vmdq_qps = 1;
7614                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7615
7616                 /* partition out the remaining vectors */
7617                 switch (vec) {
7618                 case 2:
7619                         pf->num_lan_msix = 1;
7620                         break;
7621                 case 3:
7622 #ifdef I40E_FCOE
7623                         /* give one vector to FCoE */
7624                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7625                                 pf->num_lan_msix = 1;
7626                                 pf->num_fcoe_msix = 1;
7627                         }
7628 #else
7629                         pf->num_lan_msix = 2;
7630 #endif
7631                         break;
7632                 default:
7633 #ifdef I40E_FCOE
7634                         /* give one vector to FCoE */
7635                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7636                                 pf->num_fcoe_msix = 1;
7637                                 vec--;
7638                         }
7639 #endif
7640                         /* give the rest to the PF */
7641                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7642                         break;
7643                 }
7644         }
7645
7646         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7647             (pf->num_vmdq_msix == 0)) {
7648                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7649                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7650         }
7651 #ifdef I40E_FCOE
7652
7653         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7654                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7655                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7656         }
7657 #endif
7658         return v_actual;
7659 }
7660
7661 /**
7662  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7663  * @vsi: the VSI being configured
7664  * @v_idx: index of the vector in the vsi struct
7665  *
7666  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7667  **/
7668 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7669 {
7670         struct i40e_q_vector *q_vector;
7671
7672         /* allocate q_vector */
7673         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7674         if (!q_vector)
7675                 return -ENOMEM;
7676
7677         q_vector->vsi = vsi;
7678         q_vector->v_idx = v_idx;
7679         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7680         if (vsi->netdev)
7681                 netif_napi_add(vsi->netdev, &q_vector->napi,
7682                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7683
7684         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7685         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7686
7687         /* tie q_vector and vsi together */
7688         vsi->q_vectors[v_idx] = q_vector;
7689
7690         return 0;
7691 }
7692
7693 /**
7694  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7695  * @vsi: the VSI being configured
7696  *
7697  * We allocate one q_vector per queue interrupt.  If allocation fails we
7698  * return -ENOMEM.
7699  **/
7700 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7701 {
7702         struct i40e_pf *pf = vsi->back;
7703         int v_idx, num_q_vectors;
7704         int err;
7705
7706         /* if not MSIX, give the one vector only to the LAN VSI */
7707         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7708                 num_q_vectors = vsi->num_q_vectors;
7709         else if (vsi == pf->vsi[pf->lan_vsi])
7710                 num_q_vectors = 1;
7711         else
7712                 return -EINVAL;
7713
7714         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7715                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7716                 if (err)
7717                         goto err_out;
7718         }
7719
7720         return 0;
7721
7722 err_out:
7723         while (v_idx--)
7724                 i40e_free_q_vector(vsi, v_idx);
7725
7726         return err;
7727 }
7728
7729 /**
7730  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7731  * @pf: board private structure to initialize
7732  **/
7733 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7734 {
7735         int vectors = 0;
7736         ssize_t size;
7737
7738         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7739                 vectors = i40e_init_msix(pf);
7740                 if (vectors < 0) {
7741                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7742 #ifdef I40E_FCOE
7743                                        I40E_FLAG_FCOE_ENABLED   |
7744 #endif
7745                                        I40E_FLAG_RSS_ENABLED    |
7746                                        I40E_FLAG_DCB_CAPABLE    |
7747                                        I40E_FLAG_SRIOV_ENABLED  |
7748                                        I40E_FLAG_FD_SB_ENABLED  |
7749                                        I40E_FLAG_FD_ATR_ENABLED |
7750                                        I40E_FLAG_VMDQ_ENABLED);
7751
7752                         /* rework the queue expectations without MSIX */
7753                         i40e_determine_queue_usage(pf);
7754                 }
7755         }
7756
7757         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7758             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7759                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7760                 vectors = pci_enable_msi(pf->pdev);
7761                 if (vectors < 0) {
7762                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7763                                  vectors);
7764                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7765                 }
7766                 vectors = 1;  /* one MSI or Legacy vector */
7767         }
7768
7769         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7770                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7771
7772         /* set up vector assignment tracking */
7773         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7774         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7775         if (!pf->irq_pile) {
7776                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7777                 return -ENOMEM;
7778         }
7779         pf->irq_pile->num_entries = vectors;
7780         pf->irq_pile->search_hint = 0;
7781
7782         /* track first vector for misc interrupts, ignore return */
7783         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7784
7785         return 0;
7786 }
7787
7788 /**
7789  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7790  * @pf: board private structure
7791  *
7792  * This sets up the handler for MSIX 0, which is used to manage the
7793  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7794  * when in MSI or Legacy interrupt mode.
7795  **/
7796 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7797 {
7798         struct i40e_hw *hw = &pf->hw;
7799         int err = 0;
7800
7801         /* Only request the irq if this is the first time through, and
7802          * not when we're rebuilding after a Reset
7803          */
7804         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7805                 err = request_irq(pf->msix_entries[0].vector,
7806                                   i40e_intr, 0, pf->int_name, pf);
7807                 if (err) {
7808                         dev_info(&pf->pdev->dev,
7809                                  "request_irq for %s failed: %d\n",
7810                                  pf->int_name, err);
7811                         return -EFAULT;
7812                 }
7813         }
7814
7815         i40e_enable_misc_int_causes(pf);
7816
7817         /* associate no queues to the misc vector */
7818         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7819         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7820
7821         i40e_flush(hw);
7822
7823         i40e_irq_dynamic_enable_icr0(pf);
7824
7825         return err;
7826 }
7827
7828 /**
7829  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7830  * @vsi: vsi structure
7831  * @seed: RSS hash seed
7832  **/
7833 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7834 {
7835         struct i40e_aqc_get_set_rss_key_data rss_key;
7836         struct i40e_pf *pf = vsi->back;
7837         struct i40e_hw *hw = &pf->hw;
7838         bool pf_lut = false;
7839         u8 *rss_lut;
7840         int ret, i;
7841
7842         memset(&rss_key, 0, sizeof(rss_key));
7843         memcpy(&rss_key, seed, sizeof(rss_key));
7844
7845         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7846         if (!rss_lut)
7847                 return -ENOMEM;
7848
7849         /* Populate the LUT with max no. of queues in round robin fashion */
7850         for (i = 0; i < vsi->rss_table_size; i++)
7851                 rss_lut[i] = i % vsi->rss_size;
7852
7853         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7854         if (ret) {
7855                 dev_info(&pf->pdev->dev,
7856                          "Cannot set RSS key, err %s aq_err %s\n",
7857                          i40e_stat_str(&pf->hw, ret),
7858                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7859                 goto config_rss_aq_out;
7860         }
7861
7862         if (vsi->type == I40E_VSI_MAIN)
7863                 pf_lut = true;
7864
7865         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7866                                   vsi->rss_table_size);
7867         if (ret)
7868                 dev_info(&pf->pdev->dev,
7869                          "Cannot set RSS lut, err %s aq_err %s\n",
7870                          i40e_stat_str(&pf->hw, ret),
7871                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7872
7873 config_rss_aq_out:
7874         kfree(rss_lut);
7875         return ret;
7876 }
7877
7878 /**
7879  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7880  * @vsi: VSI structure
7881  **/
7882 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7883 {
7884         u8 seed[I40E_HKEY_ARRAY_SIZE];
7885         struct i40e_pf *pf = vsi->back;
7886
7887         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7888         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7889
7890         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7891                 return i40e_config_rss_aq(vsi, seed);
7892
7893         return 0;
7894 }
7895
7896 /**
7897  * i40e_config_rss_reg - Prepare for RSS if used
7898  * @pf: board private structure
7899  * @seed: RSS hash seed
7900  **/
7901 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7902 {
7903         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7904         struct i40e_hw *hw = &pf->hw;
7905         u32 *seed_dw = (u32 *)seed;
7906         u32 current_queue = 0;
7907         u32 lut = 0;
7908         int i, j;
7909
7910         /* Fill out hash function seed */
7911         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7912                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7913
7914         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7915                 lut = 0;
7916                 for (j = 0; j < 4; j++) {
7917                         if (current_queue == vsi->rss_size)
7918                                 current_queue = 0;
7919                         lut |= ((current_queue) << (8 * j));
7920                         current_queue++;
7921                 }
7922                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7923         }
7924         i40e_flush(hw);
7925
7926         return 0;
7927 }
7928
7929 /**
7930  * i40e_config_rss - Prepare for RSS if used
7931  * @pf: board private structure
7932  **/
7933 static int i40e_config_rss(struct i40e_pf *pf)
7934 {
7935         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7936         u8 seed[I40E_HKEY_ARRAY_SIZE];
7937         struct i40e_hw *hw = &pf->hw;
7938         u32 reg_val;
7939         u64 hena;
7940
7941         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7942
7943         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7944         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7945                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7946         hena |= i40e_pf_get_default_rss_hena(pf);
7947
7948         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7949         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7950
7951         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7952
7953         /* Determine the RSS table size based on the hardware capabilities */
7954         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7955         reg_val = (pf->rss_table_size == 512) ?
7956                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7957                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7958         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7959
7960         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7961                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7962         else
7963                 return i40e_config_rss_reg(pf, seed);
7964 }
7965
7966 /**
7967  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7968  * @pf: board private structure
7969  * @queue_count: the requested queue count for rss.
7970  *
7971  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7972  * count which may be different from the requested queue count.
7973  **/
7974 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7975 {
7976         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7977         int new_rss_size;
7978
7979         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7980                 return 0;
7981
7982         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7983
7984         if (queue_count != vsi->num_queue_pairs) {
7985                 vsi->req_queue_pairs = queue_count;
7986                 i40e_prep_for_reset(pf);
7987
7988                 pf->rss_size = new_rss_size;
7989
7990                 i40e_reset_and_rebuild(pf, true);
7991                 i40e_config_rss(pf);
7992         }
7993         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7994         return pf->rss_size;
7995 }
7996
7997 /**
7998  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7999  * @pf: board private structure
8000  **/
8001 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8002 {
8003         i40e_status status;
8004         bool min_valid, max_valid;
8005         u32 max_bw, min_bw;
8006
8007         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8008                                            &min_valid, &max_valid);
8009
8010         if (!status) {
8011                 if (min_valid)
8012                         pf->npar_min_bw = min_bw;
8013                 if (max_valid)
8014                         pf->npar_max_bw = max_bw;
8015         }
8016
8017         return status;
8018 }
8019
8020 /**
8021  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8022  * @pf: board private structure
8023  **/
8024 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8025 {
8026         struct i40e_aqc_configure_partition_bw_data bw_data;
8027         i40e_status status;
8028
8029         /* Set the valid bit for this PF */
8030         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8031         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8032         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8033
8034         /* Set the new bandwidths */
8035         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8036
8037         return status;
8038 }
8039
8040 /**
8041  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8042  * @pf: board private structure
8043  **/
8044 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8045 {
8046         /* Commit temporary BW setting to permanent NVM image */
8047         enum i40e_admin_queue_err last_aq_status;
8048         i40e_status ret;
8049         u16 nvm_word;
8050
8051         if (pf->hw.partition_id != 1) {
8052                 dev_info(&pf->pdev->dev,
8053                          "Commit BW only works on partition 1! This is partition %d",
8054                          pf->hw.partition_id);
8055                 ret = I40E_NOT_SUPPORTED;
8056                 goto bw_commit_out;
8057         }
8058
8059         /* Acquire NVM for read access */
8060         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8061         last_aq_status = pf->hw.aq.asq_last_status;
8062         if (ret) {
8063                 dev_info(&pf->pdev->dev,
8064                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8065                          i40e_stat_str(&pf->hw, ret),
8066                          i40e_aq_str(&pf->hw, last_aq_status));
8067                 goto bw_commit_out;
8068         }
8069
8070         /* Read word 0x10 of NVM - SW compatibility word 1 */
8071         ret = i40e_aq_read_nvm(&pf->hw,
8072                                I40E_SR_NVM_CONTROL_WORD,
8073                                0x10, sizeof(nvm_word), &nvm_word,
8074                                false, NULL);
8075         /* Save off last admin queue command status before releasing
8076          * the NVM
8077          */
8078         last_aq_status = pf->hw.aq.asq_last_status;
8079         i40e_release_nvm(&pf->hw);
8080         if (ret) {
8081                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8082                          i40e_stat_str(&pf->hw, ret),
8083                          i40e_aq_str(&pf->hw, last_aq_status));
8084                 goto bw_commit_out;
8085         }
8086
8087         /* Wait a bit for NVM release to complete */
8088         msleep(50);
8089
8090         /* Acquire NVM for write access */
8091         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8092         last_aq_status = pf->hw.aq.asq_last_status;
8093         if (ret) {
8094                 dev_info(&pf->pdev->dev,
8095                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8096                          i40e_stat_str(&pf->hw, ret),
8097                          i40e_aq_str(&pf->hw, last_aq_status));
8098                 goto bw_commit_out;
8099         }
8100         /* Write it back out unchanged to initiate update NVM,
8101          * which will force a write of the shadow (alt) RAM to
8102          * the NVM - thus storing the bandwidth values permanently.
8103          */
8104         ret = i40e_aq_update_nvm(&pf->hw,
8105                                  I40E_SR_NVM_CONTROL_WORD,
8106                                  0x10, sizeof(nvm_word),
8107                                  &nvm_word, true, NULL);
8108         /* Save off last admin queue command status before releasing
8109          * the NVM
8110          */
8111         last_aq_status = pf->hw.aq.asq_last_status;
8112         i40e_release_nvm(&pf->hw);
8113         if (ret)
8114                 dev_info(&pf->pdev->dev,
8115                          "BW settings NOT SAVED, err %s aq_err %s\n",
8116                          i40e_stat_str(&pf->hw, ret),
8117                          i40e_aq_str(&pf->hw, last_aq_status));
8118 bw_commit_out:
8119
8120         return ret;
8121 }
8122
8123 /**
8124  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8125  * @pf: board private structure to initialize
8126  *
8127  * i40e_sw_init initializes the Adapter private data structure.
8128  * Fields are initialized based on PCI device information and
8129  * OS network device settings (MTU size).
8130  **/
8131 static int i40e_sw_init(struct i40e_pf *pf)
8132 {
8133         int err = 0;
8134         int size;
8135
8136         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8137                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8138         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8139         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8140                 if (I40E_DEBUG_USER & debug)
8141                         pf->hw.debug_mask = debug;
8142                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8143                                                 I40E_DEFAULT_MSG_ENABLE);
8144         }
8145
8146         /* Set default capability flags */
8147         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8148                     I40E_FLAG_MSI_ENABLED     |
8149                     I40E_FLAG_LINK_POLLING_ENABLED |
8150                     I40E_FLAG_MSIX_ENABLED;
8151
8152         if (iommu_present(&pci_bus_type))
8153                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8154         else
8155                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8156
8157         /* Set default ITR */
8158         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8159         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8160
8161         /* Depending on PF configurations, it is possible that the RSS
8162          * maximum might end up larger than the available queues
8163          */
8164         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8165         pf->rss_size = 1;
8166         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8167         pf->rss_size_max = min_t(int, pf->rss_size_max,
8168                                  pf->hw.func_caps.num_tx_qp);
8169         if (pf->hw.func_caps.rss) {
8170                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8171                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
8172         }
8173
8174         /* MFP mode enabled */
8175         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8176                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8177                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8178                 if (i40e_get_npar_bw_setting(pf))
8179                         dev_warn(&pf->pdev->dev,
8180                                  "Could not get NPAR bw settings\n");
8181                 else
8182                         dev_info(&pf->pdev->dev,
8183                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8184                                  pf->npar_min_bw, pf->npar_max_bw);
8185         }
8186
8187         /* FW/NVM is not yet fixed in this regard */
8188         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8189             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8190                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8191                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8192                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8193                     pf->hw.num_partitions > 1)
8194                         dev_info(&pf->pdev->dev,
8195                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8196                 else
8197                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8198                 pf->fdir_pf_filter_count =
8199                                  pf->hw.func_caps.fd_filters_guaranteed;
8200                 pf->hw.fdir_shared_filter_count =
8201                                  pf->hw.func_caps.fd_filters_best_effort;
8202         }
8203
8204         if (pf->hw.func_caps.vmdq) {
8205                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8206                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8207                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8208         }
8209
8210 #ifdef I40E_FCOE
8211         i40e_init_pf_fcoe(pf);
8212
8213 #endif /* I40E_FCOE */
8214 #ifdef CONFIG_PCI_IOV
8215         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8216                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8217                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8218                 pf->num_req_vfs = min_t(int,
8219                                         pf->hw.func_caps.num_vfs,
8220                                         I40E_MAX_VF_COUNT);
8221         }
8222 #endif /* CONFIG_PCI_IOV */
8223         if (pf->hw.mac.type == I40E_MAC_X722) {
8224                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8225                              I40E_FLAG_128_QP_RSS_CAPABLE |
8226                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8227                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8228                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8229                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8230         }
8231         pf->eeprom_version = 0xDEAD;
8232         pf->lan_veb = I40E_NO_VEB;
8233         pf->lan_vsi = I40E_NO_VSI;
8234
8235         /* By default FW has this off for performance reasons */
8236         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8237
8238         /* set up queue assignment tracking */
8239         size = sizeof(struct i40e_lump_tracking)
8240                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8241         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8242         if (!pf->qp_pile) {
8243                 err = -ENOMEM;
8244                 goto sw_init_done;
8245         }
8246         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8247         pf->qp_pile->search_hint = 0;
8248
8249         pf->tx_timeout_recovery_level = 1;
8250
8251         mutex_init(&pf->switch_mutex);
8252
8253         /* If NPAR is enabled nudge the Tx scheduler */
8254         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8255                 i40e_set_npar_bw_setting(pf);
8256
8257 sw_init_done:
8258         return err;
8259 }
8260
8261 /**
8262  * i40e_set_ntuple - set the ntuple feature flag and take action
8263  * @pf: board private structure to initialize
8264  * @features: the feature set that the stack is suggesting
8265  *
8266  * returns a bool to indicate if reset needs to happen
8267  **/
8268 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8269 {
8270         bool need_reset = false;
8271
8272         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8273          * the state changed, we need to reset.
8274          */
8275         if (features & NETIF_F_NTUPLE) {
8276                 /* Enable filters and mark for reset */
8277                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8278                         need_reset = true;
8279                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8280         } else {
8281                 /* turn off filters, mark for reset and clear SW filter list */
8282                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8283                         need_reset = true;
8284                         i40e_fdir_filter_exit(pf);
8285                 }
8286                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8287                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8288                 /* reset fd counters */
8289                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8290                 pf->fdir_pf_active_filters = 0;
8291                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8292                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8293                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8294                 /* if ATR was auto disabled it can be re-enabled. */
8295                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8296                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8297                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8298         }
8299         return need_reset;
8300 }
8301
8302 /**
8303  * i40e_set_features - set the netdev feature flags
8304  * @netdev: ptr to the netdev being adjusted
8305  * @features: the feature set that the stack is suggesting
8306  **/
8307 static int i40e_set_features(struct net_device *netdev,
8308                              netdev_features_t features)
8309 {
8310         struct i40e_netdev_priv *np = netdev_priv(netdev);
8311         struct i40e_vsi *vsi = np->vsi;
8312         struct i40e_pf *pf = vsi->back;
8313         bool need_reset;
8314
8315         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8316                 i40e_vlan_stripping_enable(vsi);
8317         else
8318                 i40e_vlan_stripping_disable(vsi);
8319
8320         need_reset = i40e_set_ntuple(pf, features);
8321
8322         if (need_reset)
8323                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8324
8325         return 0;
8326 }
8327
8328 #ifdef CONFIG_I40E_VXLAN
8329 /**
8330  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8331  * @pf: board private structure
8332  * @port: The UDP port to look up
8333  *
8334  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8335  **/
8336 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8337 {
8338         u8 i;
8339
8340         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8341                 if (pf->vxlan_ports[i] == port)
8342                         return i;
8343         }
8344
8345         return i;
8346 }
8347
8348 /**
8349  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8350  * @netdev: This physical port's netdev
8351  * @sa_family: Socket Family that VXLAN is notifying us about
8352  * @port: New UDP port number that VXLAN started listening to
8353  **/
8354 static void i40e_add_vxlan_port(struct net_device *netdev,
8355                                 sa_family_t sa_family, __be16 port)
8356 {
8357         struct i40e_netdev_priv *np = netdev_priv(netdev);
8358         struct i40e_vsi *vsi = np->vsi;
8359         struct i40e_pf *pf = vsi->back;
8360         u8 next_idx;
8361         u8 idx;
8362
8363         if (sa_family == AF_INET6)
8364                 return;
8365
8366         idx = i40e_get_vxlan_port_idx(pf, port);
8367
8368         /* Check if port already exists */
8369         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8370                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8371                             ntohs(port));
8372                 return;
8373         }
8374
8375         /* Now check if there is space to add the new port */
8376         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8377
8378         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8379                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8380                             ntohs(port));
8381                 return;
8382         }
8383
8384         /* New port: add it and mark its index in the bitmap */
8385         pf->vxlan_ports[next_idx] = port;
8386         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8387         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8388 }
8389
8390 /**
8391  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8392  * @netdev: This physical port's netdev
8393  * @sa_family: Socket Family that VXLAN is notifying us about
8394  * @port: UDP port number that VXLAN stopped listening to
8395  **/
8396 static void i40e_del_vxlan_port(struct net_device *netdev,
8397                                 sa_family_t sa_family, __be16 port)
8398 {
8399         struct i40e_netdev_priv *np = netdev_priv(netdev);
8400         struct i40e_vsi *vsi = np->vsi;
8401         struct i40e_pf *pf = vsi->back;
8402         u8 idx;
8403
8404         if (sa_family == AF_INET6)
8405                 return;
8406
8407         idx = i40e_get_vxlan_port_idx(pf, port);
8408
8409         /* Check if port already exists */
8410         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8411                 /* if port exists, set it to 0 (mark for deletion)
8412                  * and make it pending
8413                  */
8414                 pf->vxlan_ports[idx] = 0;
8415                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8416                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8417         } else {
8418                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8419                             ntohs(port));
8420         }
8421 }
8422
8423 #endif
8424 static int i40e_get_phys_port_id(struct net_device *netdev,
8425                                  struct netdev_phys_item_id *ppid)
8426 {
8427         struct i40e_netdev_priv *np = netdev_priv(netdev);
8428         struct i40e_pf *pf = np->vsi->back;
8429         struct i40e_hw *hw = &pf->hw;
8430
8431         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8432                 return -EOPNOTSUPP;
8433
8434         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8435         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8436
8437         return 0;
8438 }
8439
8440 /**
8441  * i40e_ndo_fdb_add - add an entry to the hardware database
8442  * @ndm: the input from the stack
8443  * @tb: pointer to array of nladdr (unused)
8444  * @dev: the net device pointer
8445  * @addr: the MAC address entry being added
8446  * @flags: instructions from stack about fdb operation
8447  */
8448 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8449                             struct net_device *dev,
8450                             const unsigned char *addr, u16 vid,
8451                             u16 flags)
8452 {
8453         struct i40e_netdev_priv *np = netdev_priv(dev);
8454         struct i40e_pf *pf = np->vsi->back;
8455         int err = 0;
8456
8457         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8458                 return -EOPNOTSUPP;
8459
8460         if (vid) {
8461                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8462                 return -EINVAL;
8463         }
8464
8465         /* Hardware does not support aging addresses so if a
8466          * ndm_state is given only allow permanent addresses
8467          */
8468         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8469                 netdev_info(dev, "FDB only supports static addresses\n");
8470                 return -EINVAL;
8471         }
8472
8473         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8474                 err = dev_uc_add_excl(dev, addr);
8475         else if (is_multicast_ether_addr(addr))
8476                 err = dev_mc_add_excl(dev, addr);
8477         else
8478                 err = -EINVAL;
8479
8480         /* Only return duplicate errors if NLM_F_EXCL is set */
8481         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8482                 err = 0;
8483
8484         return err;
8485 }
8486
8487 /**
8488  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8489  * @dev: the netdev being configured
8490  * @nlh: RTNL message
8491  *
8492  * Inserts a new hardware bridge if not already created and
8493  * enables the bridging mode requested (VEB or VEPA). If the
8494  * hardware bridge has already been inserted and the request
8495  * is to change the mode then that requires a PF reset to
8496  * allow rebuild of the components with required hardware
8497  * bridge mode enabled.
8498  **/
8499 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8500                                    struct nlmsghdr *nlh,
8501                                    u16 flags)
8502 {
8503         struct i40e_netdev_priv *np = netdev_priv(dev);
8504         struct i40e_vsi *vsi = np->vsi;
8505         struct i40e_pf *pf = vsi->back;
8506         struct i40e_veb *veb = NULL;
8507         struct nlattr *attr, *br_spec;
8508         int i, rem;
8509
8510         /* Only for PF VSI for now */
8511         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8512                 return -EOPNOTSUPP;
8513
8514         /* Find the HW bridge for PF VSI */
8515         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8516                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8517                         veb = pf->veb[i];
8518         }
8519
8520         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8521
8522         nla_for_each_nested(attr, br_spec, rem) {
8523                 __u16 mode;
8524
8525                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8526                         continue;
8527
8528                 mode = nla_get_u16(attr);
8529                 if ((mode != BRIDGE_MODE_VEPA) &&
8530                     (mode != BRIDGE_MODE_VEB))
8531                         return -EINVAL;
8532
8533                 /* Insert a new HW bridge */
8534                 if (!veb) {
8535                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8536                                              vsi->tc_config.enabled_tc);
8537                         if (veb) {
8538                                 veb->bridge_mode = mode;
8539                                 i40e_config_bridge_mode(veb);
8540                         } else {
8541                                 /* No Bridge HW offload available */
8542                                 return -ENOENT;
8543                         }
8544                         break;
8545                 } else if (mode != veb->bridge_mode) {
8546                         /* Existing HW bridge but different mode needs reset */
8547                         veb->bridge_mode = mode;
8548                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8549                         if (mode == BRIDGE_MODE_VEB)
8550                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8551                         else
8552                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8553                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8554                         break;
8555                 }
8556         }
8557
8558         return 0;
8559 }
8560
8561 /**
8562  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8563  * @skb: skb buff
8564  * @pid: process id
8565  * @seq: RTNL message seq #
8566  * @dev: the netdev being configured
8567  * @filter_mask: unused
8568  * @nlflags: netlink flags passed in
8569  *
8570  * Return the mode in which the hardware bridge is operating in
8571  * i.e VEB or VEPA.
8572  **/
8573 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8574                                    struct net_device *dev,
8575                                    u32 __always_unused filter_mask,
8576                                    int nlflags)
8577 {
8578         struct i40e_netdev_priv *np = netdev_priv(dev);
8579         struct i40e_vsi *vsi = np->vsi;
8580         struct i40e_pf *pf = vsi->back;
8581         struct i40e_veb *veb = NULL;
8582         int i;
8583
8584         /* Only for PF VSI for now */
8585         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8586                 return -EOPNOTSUPP;
8587
8588         /* Find the HW bridge for the PF VSI */
8589         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8590                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8591                         veb = pf->veb[i];
8592         }
8593
8594         if (!veb)
8595                 return 0;
8596
8597         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8598                                        0, 0, nlflags, filter_mask, NULL);
8599 }
8600
8601 #define I40E_MAX_TUNNEL_HDR_LEN 80
8602 /**
8603  * i40e_features_check - Validate encapsulated packet conforms to limits
8604  * @skb: skb buff
8605  * @dev: This physical port's netdev
8606  * @features: Offload features that the stack believes apply
8607  **/
8608 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8609                                              struct net_device *dev,
8610                                              netdev_features_t features)
8611 {
8612         if (skb->encapsulation &&
8613             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8614              I40E_MAX_TUNNEL_HDR_LEN))
8615                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8616
8617         return features;
8618 }
8619
8620 static const struct net_device_ops i40e_netdev_ops = {
8621         .ndo_open               = i40e_open,
8622         .ndo_stop               = i40e_close,
8623         .ndo_start_xmit         = i40e_lan_xmit_frame,
8624         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8625         .ndo_set_rx_mode        = i40e_set_rx_mode,
8626         .ndo_validate_addr      = eth_validate_addr,
8627         .ndo_set_mac_address    = i40e_set_mac,
8628         .ndo_change_mtu         = i40e_change_mtu,
8629         .ndo_do_ioctl           = i40e_ioctl,
8630         .ndo_tx_timeout         = i40e_tx_timeout,
8631         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8632         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8633 #ifdef CONFIG_NET_POLL_CONTROLLER
8634         .ndo_poll_controller    = i40e_netpoll,
8635 #endif
8636         .ndo_setup_tc           = i40e_setup_tc,
8637 #ifdef I40E_FCOE
8638         .ndo_fcoe_enable        = i40e_fcoe_enable,
8639         .ndo_fcoe_disable       = i40e_fcoe_disable,
8640 #endif
8641         .ndo_set_features       = i40e_set_features,
8642         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8643         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8644         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8645         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8646         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8647         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8648 #ifdef CONFIG_I40E_VXLAN
8649         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8650         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8651 #endif
8652         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8653         .ndo_fdb_add            = i40e_ndo_fdb_add,
8654         .ndo_features_check     = i40e_features_check,
8655         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8656         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8657 };
8658
8659 /**
8660  * i40e_config_netdev - Setup the netdev flags
8661  * @vsi: the VSI being configured
8662  *
8663  * Returns 0 on success, negative value on failure
8664  **/
8665 static int i40e_config_netdev(struct i40e_vsi *vsi)
8666 {
8667         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8668         struct i40e_pf *pf = vsi->back;
8669         struct i40e_hw *hw = &pf->hw;
8670         struct i40e_netdev_priv *np;
8671         struct net_device *netdev;
8672         u8 mac_addr[ETH_ALEN];
8673         int etherdev_size;
8674
8675         etherdev_size = sizeof(struct i40e_netdev_priv);
8676         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8677         if (!netdev)
8678                 return -ENOMEM;
8679
8680         vsi->netdev = netdev;
8681         np = netdev_priv(netdev);
8682         np->vsi = vsi;
8683
8684         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8685                                   NETIF_F_GSO_UDP_TUNNEL |
8686                                   NETIF_F_GSO_GRE        |
8687                                   NETIF_F_TSO;
8688
8689         netdev->features = NETIF_F_SG                  |
8690                            NETIF_F_IP_CSUM             |
8691                            NETIF_F_SCTP_CSUM           |
8692                            NETIF_F_HIGHDMA             |
8693                            NETIF_F_GSO_UDP_TUNNEL      |
8694                            NETIF_F_GSO_GRE             |
8695                            NETIF_F_HW_VLAN_CTAG_TX     |
8696                            NETIF_F_HW_VLAN_CTAG_RX     |
8697                            NETIF_F_HW_VLAN_CTAG_FILTER |
8698                            NETIF_F_IPV6_CSUM           |
8699                            NETIF_F_TSO                 |
8700                            NETIF_F_TSO_ECN             |
8701                            NETIF_F_TSO6                |
8702                            NETIF_F_RXCSUM              |
8703                            NETIF_F_RXHASH              |
8704                            0;
8705
8706         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8707                 netdev->features |= NETIF_F_NTUPLE;
8708
8709         /* copy netdev features into list of user selectable features */
8710         netdev->hw_features |= netdev->features;
8711
8712         if (vsi->type == I40E_VSI_MAIN) {
8713                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8714                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8715                 /* The following steps are necessary to prevent reception
8716                  * of tagged packets - some older NVM configurations load a
8717                  * default a MAC-VLAN filter that accepts any tagged packet
8718                  * which must be replaced by a normal filter.
8719                  */
8720                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8721                         spin_lock_bh(&vsi->mac_filter_list_lock);
8722                         i40e_add_filter(vsi, mac_addr,
8723                                         I40E_VLAN_ANY, false, true);
8724                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8725                 }
8726         } else {
8727                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8728                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8729                          pf->vsi[pf->lan_vsi]->netdev->name);
8730                 random_ether_addr(mac_addr);
8731
8732                 spin_lock_bh(&vsi->mac_filter_list_lock);
8733                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8734                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8735         }
8736
8737         spin_lock_bh(&vsi->mac_filter_list_lock);
8738         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8739         spin_unlock_bh(&vsi->mac_filter_list_lock);
8740
8741         ether_addr_copy(netdev->dev_addr, mac_addr);
8742         ether_addr_copy(netdev->perm_addr, mac_addr);
8743         /* vlan gets same features (except vlan offload)
8744          * after any tweaks for specific VSI types
8745          */
8746         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8747                                                      NETIF_F_HW_VLAN_CTAG_RX |
8748                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8749         netdev->priv_flags |= IFF_UNICAST_FLT;
8750         netdev->priv_flags |= IFF_SUPP_NOFCS;
8751         /* Setup netdev TC information */
8752         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8753
8754         netdev->netdev_ops = &i40e_netdev_ops;
8755         netdev->watchdog_timeo = 5 * HZ;
8756         i40e_set_ethtool_ops(netdev);
8757 #ifdef I40E_FCOE
8758         i40e_fcoe_config_netdev(netdev, vsi);
8759 #endif
8760
8761         return 0;
8762 }
8763
8764 /**
8765  * i40e_vsi_delete - Delete a VSI from the switch
8766  * @vsi: the VSI being removed
8767  *
8768  * Returns 0 on success, negative value on failure
8769  **/
8770 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8771 {
8772         /* remove default VSI is not allowed */
8773         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8774                 return;
8775
8776         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8777 }
8778
8779 /**
8780  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8781  * @vsi: the VSI being queried
8782  *
8783  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8784  **/
8785 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8786 {
8787         struct i40e_veb *veb;
8788         struct i40e_pf *pf = vsi->back;
8789
8790         /* Uplink is not a bridge so default to VEB */
8791         if (vsi->veb_idx == I40E_NO_VEB)
8792                 return 1;
8793
8794         veb = pf->veb[vsi->veb_idx];
8795         if (!veb) {
8796                 dev_info(&pf->pdev->dev,
8797                          "There is no veb associated with the bridge\n");
8798                 return -ENOENT;
8799         }
8800
8801         /* Uplink is a bridge in VEPA mode */
8802         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8803                 return 0;
8804         } else {
8805                 /* Uplink is a bridge in VEB mode */
8806                 return 1;
8807         }
8808
8809         /* VEPA is now default bridge, so return 0 */
8810         return 0;
8811 }
8812
8813 /**
8814  * i40e_add_vsi - Add a VSI to the switch
8815  * @vsi: the VSI being configured
8816  *
8817  * This initializes a VSI context depending on the VSI type to be added and
8818  * passes it down to the add_vsi aq command.
8819  **/
8820 static int i40e_add_vsi(struct i40e_vsi *vsi)
8821 {
8822         int ret = -ENODEV;
8823         u8 laa_macaddr[ETH_ALEN];
8824         bool found_laa_mac_filter = false;
8825         struct i40e_pf *pf = vsi->back;
8826         struct i40e_hw *hw = &pf->hw;
8827         struct i40e_vsi_context ctxt;
8828         struct i40e_mac_filter *f, *ftmp;
8829
8830         u8 enabled_tc = 0x1; /* TC0 enabled */
8831         int f_count = 0;
8832
8833         memset(&ctxt, 0, sizeof(ctxt));
8834         switch (vsi->type) {
8835         case I40E_VSI_MAIN:
8836                 /* The PF's main VSI is already setup as part of the
8837                  * device initialization, so we'll not bother with
8838                  * the add_vsi call, but we will retrieve the current
8839                  * VSI context.
8840                  */
8841                 ctxt.seid = pf->main_vsi_seid;
8842                 ctxt.pf_num = pf->hw.pf_id;
8843                 ctxt.vf_num = 0;
8844                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8845                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8846                 if (ret) {
8847                         dev_info(&pf->pdev->dev,
8848                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8849                                  i40e_stat_str(&pf->hw, ret),
8850                                  i40e_aq_str(&pf->hw,
8851                                              pf->hw.aq.asq_last_status));
8852                         return -ENOENT;
8853                 }
8854                 vsi->info = ctxt.info;
8855                 vsi->info.valid_sections = 0;
8856
8857                 vsi->seid = ctxt.seid;
8858                 vsi->id = ctxt.vsi_number;
8859
8860                 enabled_tc = i40e_pf_get_tc_map(pf);
8861
8862                 /* MFP mode setup queue map and update VSI */
8863                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8864                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8865                         memset(&ctxt, 0, sizeof(ctxt));
8866                         ctxt.seid = pf->main_vsi_seid;
8867                         ctxt.pf_num = pf->hw.pf_id;
8868                         ctxt.vf_num = 0;
8869                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8870                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8871                         if (ret) {
8872                                 dev_info(&pf->pdev->dev,
8873                                          "update vsi failed, err %s aq_err %s\n",
8874                                          i40e_stat_str(&pf->hw, ret),
8875                                          i40e_aq_str(&pf->hw,
8876                                                     pf->hw.aq.asq_last_status));
8877                                 ret = -ENOENT;
8878                                 goto err;
8879                         }
8880                         /* update the local VSI info queue map */
8881                         i40e_vsi_update_queue_map(vsi, &ctxt);
8882                         vsi->info.valid_sections = 0;
8883                 } else {
8884                         /* Default/Main VSI is only enabled for TC0
8885                          * reconfigure it to enable all TCs that are
8886                          * available on the port in SFP mode.
8887                          * For MFP case the iSCSI PF would use this
8888                          * flow to enable LAN+iSCSI TC.
8889                          */
8890                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8891                         if (ret) {
8892                                 dev_info(&pf->pdev->dev,
8893                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8894                                          enabled_tc,
8895                                          i40e_stat_str(&pf->hw, ret),
8896                                          i40e_aq_str(&pf->hw,
8897                                                     pf->hw.aq.asq_last_status));
8898                                 ret = -ENOENT;
8899                         }
8900                 }
8901                 break;
8902
8903         case I40E_VSI_FDIR:
8904                 ctxt.pf_num = hw->pf_id;
8905                 ctxt.vf_num = 0;
8906                 ctxt.uplink_seid = vsi->uplink_seid;
8907                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8908                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8909                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8910                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8911                         ctxt.info.valid_sections |=
8912                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8913                         ctxt.info.switch_id =
8914                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8915                 }
8916                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8917                 break;
8918
8919         case I40E_VSI_VMDQ2:
8920                 ctxt.pf_num = hw->pf_id;
8921                 ctxt.vf_num = 0;
8922                 ctxt.uplink_seid = vsi->uplink_seid;
8923                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8924                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8925
8926                 /* This VSI is connected to VEB so the switch_id
8927                  * should be set to zero by default.
8928                  */
8929                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8930                         ctxt.info.valid_sections |=
8931                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8932                         ctxt.info.switch_id =
8933                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8934                 }
8935
8936                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8937                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8938                 break;
8939
8940         case I40E_VSI_SRIOV:
8941                 ctxt.pf_num = hw->pf_id;
8942                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8943                 ctxt.uplink_seid = vsi->uplink_seid;
8944                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8945                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8946
8947                 /* This VSI is connected to VEB so the switch_id
8948                  * should be set to zero by default.
8949                  */
8950                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8951                         ctxt.info.valid_sections |=
8952                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8953                         ctxt.info.switch_id =
8954                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8955                 }
8956
8957                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8958                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8959                 if (pf->vf[vsi->vf_id].spoofchk) {
8960                         ctxt.info.valid_sections |=
8961                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8962                         ctxt.info.sec_flags |=
8963                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8964                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8965                 }
8966                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8967                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8968                 break;
8969
8970 #ifdef I40E_FCOE
8971         case I40E_VSI_FCOE:
8972                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8973                 if (ret) {
8974                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8975                         return ret;
8976                 }
8977                 break;
8978
8979 #endif /* I40E_FCOE */
8980         default:
8981                 return -ENODEV;
8982         }
8983
8984         if (vsi->type != I40E_VSI_MAIN) {
8985                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8986                 if (ret) {
8987                         dev_info(&vsi->back->pdev->dev,
8988                                  "add vsi failed, err %s aq_err %s\n",
8989                                  i40e_stat_str(&pf->hw, ret),
8990                                  i40e_aq_str(&pf->hw,
8991                                              pf->hw.aq.asq_last_status));
8992                         ret = -ENOENT;
8993                         goto err;
8994                 }
8995                 vsi->info = ctxt.info;
8996                 vsi->info.valid_sections = 0;
8997                 vsi->seid = ctxt.seid;
8998                 vsi->id = ctxt.vsi_number;
8999         }
9000
9001         spin_lock_bh(&vsi->mac_filter_list_lock);
9002         /* If macvlan filters already exist, force them to get loaded */
9003         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9004                 f->changed = true;
9005                 f_count++;
9006
9007                 /* Expected to have only one MAC filter entry for LAA in list */
9008                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9009                         ether_addr_copy(laa_macaddr, f->macaddr);
9010                         found_laa_mac_filter = true;
9011                 }
9012         }
9013         spin_unlock_bh(&vsi->mac_filter_list_lock);
9014
9015         if (found_laa_mac_filter) {
9016                 struct i40e_aqc_remove_macvlan_element_data element;
9017
9018                 memset(&element, 0, sizeof(element));
9019                 ether_addr_copy(element.mac_addr, laa_macaddr);
9020                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9021                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9022                                              &element, 1, NULL);
9023                 if (ret) {
9024                         /* some older FW has a different default */
9025                         element.flags |=
9026                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9027                         i40e_aq_remove_macvlan(hw, vsi->seid,
9028                                                &element, 1, NULL);
9029                 }
9030
9031                 i40e_aq_mac_address_write(hw,
9032                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9033                                           laa_macaddr, NULL);
9034         }
9035
9036         if (f_count) {
9037                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9038                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9039         }
9040
9041         /* Update VSI BW information */
9042         ret = i40e_vsi_get_bw_info(vsi);
9043         if (ret) {
9044                 dev_info(&pf->pdev->dev,
9045                          "couldn't get vsi bw info, err %s aq_err %s\n",
9046                          i40e_stat_str(&pf->hw, ret),
9047                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9048                 /* VSI is already added so not tearing that up */
9049                 ret = 0;
9050         }
9051
9052 err:
9053         return ret;
9054 }
9055
9056 /**
9057  * i40e_vsi_release - Delete a VSI and free its resources
9058  * @vsi: the VSI being removed
9059  *
9060  * Returns 0 on success or < 0 on error
9061  **/
9062 int i40e_vsi_release(struct i40e_vsi *vsi)
9063 {
9064         struct i40e_mac_filter *f, *ftmp;
9065         struct i40e_veb *veb = NULL;
9066         struct i40e_pf *pf;
9067         u16 uplink_seid;
9068         int i, n;
9069
9070         pf = vsi->back;
9071
9072         /* release of a VEB-owner or last VSI is not allowed */
9073         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9074                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9075                          vsi->seid, vsi->uplink_seid);
9076                 return -ENODEV;
9077         }
9078         if (vsi == pf->vsi[pf->lan_vsi] &&
9079             !test_bit(__I40E_DOWN, &pf->state)) {
9080                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9081                 return -ENODEV;
9082         }
9083
9084         uplink_seid = vsi->uplink_seid;
9085         if (vsi->type != I40E_VSI_SRIOV) {
9086                 if (vsi->netdev_registered) {
9087                         vsi->netdev_registered = false;
9088                         if (vsi->netdev) {
9089                                 /* results in a call to i40e_close() */
9090                                 unregister_netdev(vsi->netdev);
9091                         }
9092                 } else {
9093                         i40e_vsi_close(vsi);
9094                 }
9095                 i40e_vsi_disable_irq(vsi);
9096         }
9097
9098         spin_lock_bh(&vsi->mac_filter_list_lock);
9099         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9100                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9101                                 f->is_vf, f->is_netdev);
9102         spin_unlock_bh(&vsi->mac_filter_list_lock);
9103
9104         i40e_sync_vsi_filters(vsi, false);
9105
9106         i40e_vsi_delete(vsi);
9107         i40e_vsi_free_q_vectors(vsi);
9108         if (vsi->netdev) {
9109                 free_netdev(vsi->netdev);
9110                 vsi->netdev = NULL;
9111         }
9112         i40e_vsi_clear_rings(vsi);
9113         i40e_vsi_clear(vsi);
9114
9115         /* If this was the last thing on the VEB, except for the
9116          * controlling VSI, remove the VEB, which puts the controlling
9117          * VSI onto the next level down in the switch.
9118          *
9119          * Well, okay, there's one more exception here: don't remove
9120          * the orphan VEBs yet.  We'll wait for an explicit remove request
9121          * from up the network stack.
9122          */
9123         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9124                 if (pf->vsi[i] &&
9125                     pf->vsi[i]->uplink_seid == uplink_seid &&
9126                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9127                         n++;      /* count the VSIs */
9128                 }
9129         }
9130         for (i = 0; i < I40E_MAX_VEB; i++) {
9131                 if (!pf->veb[i])
9132                         continue;
9133                 if (pf->veb[i]->uplink_seid == uplink_seid)
9134                         n++;     /* count the VEBs */
9135                 if (pf->veb[i]->seid == uplink_seid)
9136                         veb = pf->veb[i];
9137         }
9138         if (n == 0 && veb && veb->uplink_seid != 0)
9139                 i40e_veb_release(veb);
9140
9141         return 0;
9142 }
9143
9144 /**
9145  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9146  * @vsi: ptr to the VSI
9147  *
9148  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9149  * corresponding SW VSI structure and initializes num_queue_pairs for the
9150  * newly allocated VSI.
9151  *
9152  * Returns 0 on success or negative on failure
9153  **/
9154 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9155 {
9156         int ret = -ENOENT;
9157         struct i40e_pf *pf = vsi->back;
9158
9159         if (vsi->q_vectors[0]) {
9160                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9161                          vsi->seid);
9162                 return -EEXIST;
9163         }
9164
9165         if (vsi->base_vector) {
9166                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9167                          vsi->seid, vsi->base_vector);
9168                 return -EEXIST;
9169         }
9170
9171         ret = i40e_vsi_alloc_q_vectors(vsi);
9172         if (ret) {
9173                 dev_info(&pf->pdev->dev,
9174                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9175                          vsi->num_q_vectors, vsi->seid, ret);
9176                 vsi->num_q_vectors = 0;
9177                 goto vector_setup_out;
9178         }
9179
9180         /* In Legacy mode, we do not have to get any other vector since we
9181          * piggyback on the misc/ICR0 for queue interrupts.
9182         */
9183         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9184                 return ret;
9185         if (vsi->num_q_vectors)
9186                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9187                                                  vsi->num_q_vectors, vsi->idx);
9188         if (vsi->base_vector < 0) {
9189                 dev_info(&pf->pdev->dev,
9190                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9191                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9192                 i40e_vsi_free_q_vectors(vsi);
9193                 ret = -ENOENT;
9194                 goto vector_setup_out;
9195         }
9196
9197 vector_setup_out:
9198         return ret;
9199 }
9200
9201 /**
9202  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9203  * @vsi: pointer to the vsi.
9204  *
9205  * This re-allocates a vsi's queue resources.
9206  *
9207  * Returns pointer to the successfully allocated and configured VSI sw struct
9208  * on success, otherwise returns NULL on failure.
9209  **/
9210 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9211 {
9212         struct i40e_pf *pf = vsi->back;
9213         u8 enabled_tc;
9214         int ret;
9215
9216         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9217         i40e_vsi_clear_rings(vsi);
9218
9219         i40e_vsi_free_arrays(vsi, false);
9220         i40e_set_num_rings_in_vsi(vsi);
9221         ret = i40e_vsi_alloc_arrays(vsi, false);
9222         if (ret)
9223                 goto err_vsi;
9224
9225         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9226         if (ret < 0) {
9227                 dev_info(&pf->pdev->dev,
9228                          "failed to get tracking for %d queues for VSI %d err %d\n",
9229                          vsi->alloc_queue_pairs, vsi->seid, ret);
9230                 goto err_vsi;
9231         }
9232         vsi->base_queue = ret;
9233
9234         /* Update the FW view of the VSI. Force a reset of TC and queue
9235          * layout configurations.
9236          */
9237         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9238         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9239         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9240         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9241
9242         /* assign it some queues */
9243         ret = i40e_alloc_rings(vsi);
9244         if (ret)
9245                 goto err_rings;
9246
9247         /* map all of the rings to the q_vectors */
9248         i40e_vsi_map_rings_to_vectors(vsi);
9249         return vsi;
9250
9251 err_rings:
9252         i40e_vsi_free_q_vectors(vsi);
9253         if (vsi->netdev_registered) {
9254                 vsi->netdev_registered = false;
9255                 unregister_netdev(vsi->netdev);
9256                 free_netdev(vsi->netdev);
9257                 vsi->netdev = NULL;
9258         }
9259         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9260 err_vsi:
9261         i40e_vsi_clear(vsi);
9262         return NULL;
9263 }
9264
9265 /**
9266  * i40e_vsi_setup - Set up a VSI by a given type
9267  * @pf: board private structure
9268  * @type: VSI type
9269  * @uplink_seid: the switch element to link to
9270  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9271  *
9272  * This allocates the sw VSI structure and its queue resources, then add a VSI
9273  * to the identified VEB.
9274  *
9275  * Returns pointer to the successfully allocated and configure VSI sw struct on
9276  * success, otherwise returns NULL on failure.
9277  **/
9278 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9279                                 u16 uplink_seid, u32 param1)
9280 {
9281         struct i40e_vsi *vsi = NULL;
9282         struct i40e_veb *veb = NULL;
9283         int ret, i;
9284         int v_idx;
9285
9286         /* The requested uplink_seid must be either
9287          *     - the PF's port seid
9288          *              no VEB is needed because this is the PF
9289          *              or this is a Flow Director special case VSI
9290          *     - seid of an existing VEB
9291          *     - seid of a VSI that owns an existing VEB
9292          *     - seid of a VSI that doesn't own a VEB
9293          *              a new VEB is created and the VSI becomes the owner
9294          *     - seid of the PF VSI, which is what creates the first VEB
9295          *              this is a special case of the previous
9296          *
9297          * Find which uplink_seid we were given and create a new VEB if needed
9298          */
9299         for (i = 0; i < I40E_MAX_VEB; i++) {
9300                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9301                         veb = pf->veb[i];
9302                         break;
9303                 }
9304         }
9305
9306         if (!veb && uplink_seid != pf->mac_seid) {
9307
9308                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9309                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9310                                 vsi = pf->vsi[i];
9311                                 break;
9312                         }
9313                 }
9314                 if (!vsi) {
9315                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9316                                  uplink_seid);
9317                         return NULL;
9318                 }
9319
9320                 if (vsi->uplink_seid == pf->mac_seid)
9321                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9322                                              vsi->tc_config.enabled_tc);
9323                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9324                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9325                                              vsi->tc_config.enabled_tc);
9326                 if (veb) {
9327                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9328                                 dev_info(&vsi->back->pdev->dev,
9329                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9330                                 return NULL;
9331                         }
9332                         /* We come up by default in VEPA mode if SRIOV is not
9333                          * already enabled, in which case we can't force VEPA
9334                          * mode.
9335                          */
9336                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9337                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9338                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9339                         }
9340                         i40e_config_bridge_mode(veb);
9341                 }
9342                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9343                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9344                                 veb = pf->veb[i];
9345                 }
9346                 if (!veb) {
9347                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9348                         return NULL;
9349                 }
9350
9351                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9352                 uplink_seid = veb->seid;
9353         }
9354
9355         /* get vsi sw struct */
9356         v_idx = i40e_vsi_mem_alloc(pf, type);
9357         if (v_idx < 0)
9358                 goto err_alloc;
9359         vsi = pf->vsi[v_idx];
9360         if (!vsi)
9361                 goto err_alloc;
9362         vsi->type = type;
9363         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9364
9365         if (type == I40E_VSI_MAIN)
9366                 pf->lan_vsi = v_idx;
9367         else if (type == I40E_VSI_SRIOV)
9368                 vsi->vf_id = param1;
9369         /* assign it some queues */
9370         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9371                                 vsi->idx);
9372         if (ret < 0) {
9373                 dev_info(&pf->pdev->dev,
9374                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9375                          vsi->alloc_queue_pairs, vsi->seid, ret);
9376                 goto err_vsi;
9377         }
9378         vsi->base_queue = ret;
9379
9380         /* get a VSI from the hardware */
9381         vsi->uplink_seid = uplink_seid;
9382         ret = i40e_add_vsi(vsi);
9383         if (ret)
9384                 goto err_vsi;
9385
9386         switch (vsi->type) {
9387         /* setup the netdev if needed */
9388         case I40E_VSI_MAIN:
9389         case I40E_VSI_VMDQ2:
9390         case I40E_VSI_FCOE:
9391                 ret = i40e_config_netdev(vsi);
9392                 if (ret)
9393                         goto err_netdev;
9394                 ret = register_netdev(vsi->netdev);
9395                 if (ret)
9396                         goto err_netdev;
9397                 vsi->netdev_registered = true;
9398                 netif_carrier_off(vsi->netdev);
9399 #ifdef CONFIG_I40E_DCB
9400                 /* Setup DCB netlink interface */
9401                 i40e_dcbnl_setup(vsi);
9402 #endif /* CONFIG_I40E_DCB */
9403                 /* fall through */
9404
9405         case I40E_VSI_FDIR:
9406                 /* set up vectors and rings if needed */
9407                 ret = i40e_vsi_setup_vectors(vsi);
9408                 if (ret)
9409                         goto err_msix;
9410
9411                 ret = i40e_alloc_rings(vsi);
9412                 if (ret)
9413                         goto err_rings;
9414
9415                 /* map all of the rings to the q_vectors */
9416                 i40e_vsi_map_rings_to_vectors(vsi);
9417
9418                 i40e_vsi_reset_stats(vsi);
9419                 break;
9420
9421         default:
9422                 /* no netdev or rings for the other VSI types */
9423                 break;
9424         }
9425
9426         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9427             (vsi->type == I40E_VSI_VMDQ2)) {
9428                 ret = i40e_vsi_config_rss(vsi);
9429         }
9430         return vsi;
9431
9432 err_rings:
9433         i40e_vsi_free_q_vectors(vsi);
9434 err_msix:
9435         if (vsi->netdev_registered) {
9436                 vsi->netdev_registered = false;
9437                 unregister_netdev(vsi->netdev);
9438                 free_netdev(vsi->netdev);
9439                 vsi->netdev = NULL;
9440         }
9441 err_netdev:
9442         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9443 err_vsi:
9444         i40e_vsi_clear(vsi);
9445 err_alloc:
9446         return NULL;
9447 }
9448
9449 /**
9450  * i40e_veb_get_bw_info - Query VEB BW information
9451  * @veb: the veb to query
9452  *
9453  * Query the Tx scheduler BW configuration data for given VEB
9454  **/
9455 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9456 {
9457         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9458         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9459         struct i40e_pf *pf = veb->pf;
9460         struct i40e_hw *hw = &pf->hw;
9461         u32 tc_bw_max;
9462         int ret = 0;
9463         int i;
9464
9465         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9466                                                   &bw_data, NULL);
9467         if (ret) {
9468                 dev_info(&pf->pdev->dev,
9469                          "query veb bw config failed, err %s aq_err %s\n",
9470                          i40e_stat_str(&pf->hw, ret),
9471                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9472                 goto out;
9473         }
9474
9475         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9476                                                    &ets_data, NULL);
9477         if (ret) {
9478                 dev_info(&pf->pdev->dev,
9479                          "query veb bw ets config failed, err %s aq_err %s\n",
9480                          i40e_stat_str(&pf->hw, ret),
9481                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9482                 goto out;
9483         }
9484
9485         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9486         veb->bw_max_quanta = ets_data.tc_bw_max;
9487         veb->is_abs_credits = bw_data.absolute_credits_enable;
9488         veb->enabled_tc = ets_data.tc_valid_bits;
9489         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9490                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9491         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9492                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9493                 veb->bw_tc_limit_credits[i] =
9494                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9495                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9496         }
9497
9498 out:
9499         return ret;
9500 }
9501
9502 /**
9503  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9504  * @pf: board private structure
9505  *
9506  * On error: returns error code (negative)
9507  * On success: returns vsi index in PF (positive)
9508  **/
9509 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9510 {
9511         int ret = -ENOENT;
9512         struct i40e_veb *veb;
9513         int i;
9514
9515         /* Need to protect the allocation of switch elements at the PF level */
9516         mutex_lock(&pf->switch_mutex);
9517
9518         /* VEB list may be fragmented if VEB creation/destruction has
9519          * been happening.  We can afford to do a quick scan to look
9520          * for any free slots in the list.
9521          *
9522          * find next empty veb slot, looping back around if necessary
9523          */
9524         i = 0;
9525         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9526                 i++;
9527         if (i >= I40E_MAX_VEB) {
9528                 ret = -ENOMEM;
9529                 goto err_alloc_veb;  /* out of VEB slots! */
9530         }
9531
9532         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9533         if (!veb) {
9534                 ret = -ENOMEM;
9535                 goto err_alloc_veb;
9536         }
9537         veb->pf = pf;
9538         veb->idx = i;
9539         veb->enabled_tc = 1;
9540
9541         pf->veb[i] = veb;
9542         ret = i;
9543 err_alloc_veb:
9544         mutex_unlock(&pf->switch_mutex);
9545         return ret;
9546 }
9547
9548 /**
9549  * i40e_switch_branch_release - Delete a branch of the switch tree
9550  * @branch: where to start deleting
9551  *
9552  * This uses recursion to find the tips of the branch to be
9553  * removed, deleting until we get back to and can delete this VEB.
9554  **/
9555 static void i40e_switch_branch_release(struct i40e_veb *branch)
9556 {
9557         struct i40e_pf *pf = branch->pf;
9558         u16 branch_seid = branch->seid;
9559         u16 veb_idx = branch->idx;
9560         int i;
9561
9562         /* release any VEBs on this VEB - RECURSION */
9563         for (i = 0; i < I40E_MAX_VEB; i++) {
9564                 if (!pf->veb[i])
9565                         continue;
9566                 if (pf->veb[i]->uplink_seid == branch->seid)
9567                         i40e_switch_branch_release(pf->veb[i]);
9568         }
9569
9570         /* Release the VSIs on this VEB, but not the owner VSI.
9571          *
9572          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9573          *       the VEB itself, so don't use (*branch) after this loop.
9574          */
9575         for (i = 0; i < pf->num_alloc_vsi; i++) {
9576                 if (!pf->vsi[i])
9577                         continue;
9578                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9579                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9580                         i40e_vsi_release(pf->vsi[i]);
9581                 }
9582         }
9583
9584         /* There's one corner case where the VEB might not have been
9585          * removed, so double check it here and remove it if needed.
9586          * This case happens if the veb was created from the debugfs
9587          * commands and no VSIs were added to it.
9588          */
9589         if (pf->veb[veb_idx])
9590                 i40e_veb_release(pf->veb[veb_idx]);
9591 }
9592
9593 /**
9594  * i40e_veb_clear - remove veb struct
9595  * @veb: the veb to remove
9596  **/
9597 static void i40e_veb_clear(struct i40e_veb *veb)
9598 {
9599         if (!veb)
9600                 return;
9601
9602         if (veb->pf) {
9603                 struct i40e_pf *pf = veb->pf;
9604
9605                 mutex_lock(&pf->switch_mutex);
9606                 if (pf->veb[veb->idx] == veb)
9607                         pf->veb[veb->idx] = NULL;
9608                 mutex_unlock(&pf->switch_mutex);
9609         }
9610
9611         kfree(veb);
9612 }
9613
9614 /**
9615  * i40e_veb_release - Delete a VEB and free its resources
9616  * @veb: the VEB being removed
9617  **/
9618 void i40e_veb_release(struct i40e_veb *veb)
9619 {
9620         struct i40e_vsi *vsi = NULL;
9621         struct i40e_pf *pf;
9622         int i, n = 0;
9623
9624         pf = veb->pf;
9625
9626         /* find the remaining VSI and check for extras */
9627         for (i = 0; i < pf->num_alloc_vsi; i++) {
9628                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9629                         n++;
9630                         vsi = pf->vsi[i];
9631                 }
9632         }
9633         if (n != 1) {
9634                 dev_info(&pf->pdev->dev,
9635                          "can't remove VEB %d with %d VSIs left\n",
9636                          veb->seid, n);
9637                 return;
9638         }
9639
9640         /* move the remaining VSI to uplink veb */
9641         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9642         if (veb->uplink_seid) {
9643                 vsi->uplink_seid = veb->uplink_seid;
9644                 if (veb->uplink_seid == pf->mac_seid)
9645                         vsi->veb_idx = I40E_NO_VEB;
9646                 else
9647                         vsi->veb_idx = veb->veb_idx;
9648         } else {
9649                 /* floating VEB */
9650                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9651                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9652         }
9653
9654         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9655         i40e_veb_clear(veb);
9656 }
9657
9658 /**
9659  * i40e_add_veb - create the VEB in the switch
9660  * @veb: the VEB to be instantiated
9661  * @vsi: the controlling VSI
9662  **/
9663 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9664 {
9665         struct i40e_pf *pf = veb->pf;
9666         bool is_default = veb->pf->cur_promisc;
9667         bool is_cloud = false;
9668         int ret;
9669
9670         /* get a VEB from the hardware */
9671         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9672                               veb->enabled_tc, is_default,
9673                               is_cloud, &veb->seid, NULL);
9674         if (ret) {
9675                 dev_info(&pf->pdev->dev,
9676                          "couldn't add VEB, err %s aq_err %s\n",
9677                          i40e_stat_str(&pf->hw, ret),
9678                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9679                 return -EPERM;
9680         }
9681
9682         /* get statistics counter */
9683         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9684                                          &veb->stats_idx, NULL, NULL, NULL);
9685         if (ret) {
9686                 dev_info(&pf->pdev->dev,
9687                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9688                          i40e_stat_str(&pf->hw, ret),
9689                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9690                 return -EPERM;
9691         }
9692         ret = i40e_veb_get_bw_info(veb);
9693         if (ret) {
9694                 dev_info(&pf->pdev->dev,
9695                          "couldn't get VEB bw info, err %s aq_err %s\n",
9696                          i40e_stat_str(&pf->hw, ret),
9697                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9698                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9699                 return -ENOENT;
9700         }
9701
9702         vsi->uplink_seid = veb->seid;
9703         vsi->veb_idx = veb->idx;
9704         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9705
9706         return 0;
9707 }
9708
9709 /**
9710  * i40e_veb_setup - Set up a VEB
9711  * @pf: board private structure
9712  * @flags: VEB setup flags
9713  * @uplink_seid: the switch element to link to
9714  * @vsi_seid: the initial VSI seid
9715  * @enabled_tc: Enabled TC bit-map
9716  *
9717  * This allocates the sw VEB structure and links it into the switch
9718  * It is possible and legal for this to be a duplicate of an already
9719  * existing VEB.  It is also possible for both uplink and vsi seids
9720  * to be zero, in order to create a floating VEB.
9721  *
9722  * Returns pointer to the successfully allocated VEB sw struct on
9723  * success, otherwise returns NULL on failure.
9724  **/
9725 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9726                                 u16 uplink_seid, u16 vsi_seid,
9727                                 u8 enabled_tc)
9728 {
9729         struct i40e_veb *veb, *uplink_veb = NULL;
9730         int vsi_idx, veb_idx;
9731         int ret;
9732
9733         /* if one seid is 0, the other must be 0 to create a floating relay */
9734         if ((uplink_seid == 0 || vsi_seid == 0) &&
9735             (uplink_seid + vsi_seid != 0)) {
9736                 dev_info(&pf->pdev->dev,
9737                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9738                          uplink_seid, vsi_seid);
9739                 return NULL;
9740         }
9741
9742         /* make sure there is such a vsi and uplink */
9743         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9744                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9745                         break;
9746         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9747                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9748                          vsi_seid);
9749                 return NULL;
9750         }
9751
9752         if (uplink_seid && uplink_seid != pf->mac_seid) {
9753                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9754                         if (pf->veb[veb_idx] &&
9755                             pf->veb[veb_idx]->seid == uplink_seid) {
9756                                 uplink_veb = pf->veb[veb_idx];
9757                                 break;
9758                         }
9759                 }
9760                 if (!uplink_veb) {
9761                         dev_info(&pf->pdev->dev,
9762                                  "uplink seid %d not found\n", uplink_seid);
9763                         return NULL;
9764                 }
9765         }
9766
9767         /* get veb sw struct */
9768         veb_idx = i40e_veb_mem_alloc(pf);
9769         if (veb_idx < 0)
9770                 goto err_alloc;
9771         veb = pf->veb[veb_idx];
9772         veb->flags = flags;
9773         veb->uplink_seid = uplink_seid;
9774         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9775         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9776
9777         /* create the VEB in the switch */
9778         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9779         if (ret)
9780                 goto err_veb;
9781         if (vsi_idx == pf->lan_vsi)
9782                 pf->lan_veb = veb->idx;
9783
9784         return veb;
9785
9786 err_veb:
9787         i40e_veb_clear(veb);
9788 err_alloc:
9789         return NULL;
9790 }
9791
9792 /**
9793  * i40e_setup_pf_switch_element - set PF vars based on switch type
9794  * @pf: board private structure
9795  * @ele: element we are building info from
9796  * @num_reported: total number of elements
9797  * @printconfig: should we print the contents
9798  *
9799  * helper function to assist in extracting a few useful SEID values.
9800  **/
9801 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9802                                 struct i40e_aqc_switch_config_element_resp *ele,
9803                                 u16 num_reported, bool printconfig)
9804 {
9805         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9806         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9807         u8 element_type = ele->element_type;
9808         u16 seid = le16_to_cpu(ele->seid);
9809
9810         if (printconfig)
9811                 dev_info(&pf->pdev->dev,
9812                          "type=%d seid=%d uplink=%d downlink=%d\n",
9813                          element_type, seid, uplink_seid, downlink_seid);
9814
9815         switch (element_type) {
9816         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9817                 pf->mac_seid = seid;
9818                 break;
9819         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9820                 /* Main VEB? */
9821                 if (uplink_seid != pf->mac_seid)
9822                         break;
9823                 if (pf->lan_veb == I40E_NO_VEB) {
9824                         int v;
9825
9826                         /* find existing or else empty VEB */
9827                         for (v = 0; v < I40E_MAX_VEB; v++) {
9828                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9829                                         pf->lan_veb = v;
9830                                         break;
9831                                 }
9832                         }
9833                         if (pf->lan_veb == I40E_NO_VEB) {
9834                                 v = i40e_veb_mem_alloc(pf);
9835                                 if (v < 0)
9836                                         break;
9837                                 pf->lan_veb = v;
9838                         }
9839                 }
9840
9841                 pf->veb[pf->lan_veb]->seid = seid;
9842                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9843                 pf->veb[pf->lan_veb]->pf = pf;
9844                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9845                 break;
9846         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9847                 if (num_reported != 1)
9848                         break;
9849                 /* This is immediately after a reset so we can assume this is
9850                  * the PF's VSI
9851                  */
9852                 pf->mac_seid = uplink_seid;
9853                 pf->pf_seid = downlink_seid;
9854                 pf->main_vsi_seid = seid;
9855                 if (printconfig)
9856                         dev_info(&pf->pdev->dev,
9857                                  "pf_seid=%d main_vsi_seid=%d\n",
9858                                  pf->pf_seid, pf->main_vsi_seid);
9859                 break;
9860         case I40E_SWITCH_ELEMENT_TYPE_PF:
9861         case I40E_SWITCH_ELEMENT_TYPE_VF:
9862         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9863         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9864         case I40E_SWITCH_ELEMENT_TYPE_PE:
9865         case I40E_SWITCH_ELEMENT_TYPE_PA:
9866                 /* ignore these for now */
9867                 break;
9868         default:
9869                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9870                          element_type, seid);
9871                 break;
9872         }
9873 }
9874
9875 /**
9876  * i40e_fetch_switch_configuration - Get switch config from firmware
9877  * @pf: board private structure
9878  * @printconfig: should we print the contents
9879  *
9880  * Get the current switch configuration from the device and
9881  * extract a few useful SEID values.
9882  **/
9883 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9884 {
9885         struct i40e_aqc_get_switch_config_resp *sw_config;
9886         u16 next_seid = 0;
9887         int ret = 0;
9888         u8 *aq_buf;
9889         int i;
9890
9891         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9892         if (!aq_buf)
9893                 return -ENOMEM;
9894
9895         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9896         do {
9897                 u16 num_reported, num_total;
9898
9899                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9900                                                 I40E_AQ_LARGE_BUF,
9901                                                 &next_seid, NULL);
9902                 if (ret) {
9903                         dev_info(&pf->pdev->dev,
9904                                  "get switch config failed err %s aq_err %s\n",
9905                                  i40e_stat_str(&pf->hw, ret),
9906                                  i40e_aq_str(&pf->hw,
9907                                              pf->hw.aq.asq_last_status));
9908                         kfree(aq_buf);
9909                         return -ENOENT;
9910                 }
9911
9912                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9913                 num_total = le16_to_cpu(sw_config->header.num_total);
9914
9915                 if (printconfig)
9916                         dev_info(&pf->pdev->dev,
9917                                  "header: %d reported %d total\n",
9918                                  num_reported, num_total);
9919
9920                 for (i = 0; i < num_reported; i++) {
9921                         struct i40e_aqc_switch_config_element_resp *ele =
9922                                 &sw_config->element[i];
9923
9924                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9925                                                      printconfig);
9926                 }
9927         } while (next_seid != 0);
9928
9929         kfree(aq_buf);
9930         return ret;
9931 }
9932
9933 /**
9934  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9935  * @pf: board private structure
9936  * @reinit: if the Main VSI needs to re-initialized.
9937  *
9938  * Returns 0 on success, negative value on failure
9939  **/
9940 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9941 {
9942         int ret;
9943
9944         /* find out what's out there already */
9945         ret = i40e_fetch_switch_configuration(pf, false);
9946         if (ret) {
9947                 dev_info(&pf->pdev->dev,
9948                          "couldn't fetch switch config, err %s aq_err %s\n",
9949                          i40e_stat_str(&pf->hw, ret),
9950                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9951                 return ret;
9952         }
9953         i40e_pf_reset_stats(pf);
9954
9955         /* first time setup */
9956         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9957                 struct i40e_vsi *vsi = NULL;
9958                 u16 uplink_seid;
9959
9960                 /* Set up the PF VSI associated with the PF's main VSI
9961                  * that is already in the HW switch
9962                  */
9963                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9964                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9965                 else
9966                         uplink_seid = pf->mac_seid;
9967                 if (pf->lan_vsi == I40E_NO_VSI)
9968                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9969                 else if (reinit)
9970                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9971                 if (!vsi) {
9972                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9973                         i40e_fdir_teardown(pf);
9974                         return -EAGAIN;
9975                 }
9976         } else {
9977                 /* force a reset of TC and queue layout configurations */
9978                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9979
9980                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9981                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9982                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9983         }
9984         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9985
9986         i40e_fdir_sb_setup(pf);
9987
9988         /* Setup static PF queue filter control settings */
9989         ret = i40e_setup_pf_filter_control(pf);
9990         if (ret) {
9991                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9992                          ret);
9993                 /* Failure here should not stop continuing other steps */
9994         }
9995
9996         /* enable RSS in the HW, even for only one queue, as the stack can use
9997          * the hash
9998          */
9999         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10000                 i40e_config_rss(pf);
10001
10002         /* fill in link information and enable LSE reporting */
10003         i40e_update_link_info(&pf->hw);
10004         i40e_link_event(pf);
10005
10006         /* Initialize user-specific link properties */
10007         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10008                                   I40E_AQ_AN_COMPLETED) ? true : false);
10009
10010         i40e_ptp_init(pf);
10011
10012         return ret;
10013 }
10014
10015 /**
10016  * i40e_determine_queue_usage - Work out queue distribution
10017  * @pf: board private structure
10018  **/
10019 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10020 {
10021         int queues_left;
10022
10023         pf->num_lan_qps = 0;
10024 #ifdef I40E_FCOE
10025         pf->num_fcoe_qps = 0;
10026 #endif
10027
10028         /* Find the max queues to be put into basic use.  We'll always be
10029          * using TC0, whether or not DCB is running, and TC0 will get the
10030          * big RSS set.
10031          */
10032         queues_left = pf->hw.func_caps.num_tx_qp;
10033
10034         if ((queues_left == 1) ||
10035             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10036                 /* one qp for PF, no queues for anything else */
10037                 queues_left = 0;
10038                 pf->rss_size = pf->num_lan_qps = 1;
10039
10040                 /* make sure all the fancies are disabled */
10041                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10042 #ifdef I40E_FCOE
10043                                I40E_FLAG_FCOE_ENABLED   |
10044 #endif
10045                                I40E_FLAG_FD_SB_ENABLED  |
10046                                I40E_FLAG_FD_ATR_ENABLED |
10047                                I40E_FLAG_DCB_CAPABLE    |
10048                                I40E_FLAG_SRIOV_ENABLED  |
10049                                I40E_FLAG_VMDQ_ENABLED);
10050         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10051                                   I40E_FLAG_FD_SB_ENABLED |
10052                                   I40E_FLAG_FD_ATR_ENABLED |
10053                                   I40E_FLAG_DCB_CAPABLE))) {
10054                 /* one qp for PF */
10055                 pf->rss_size = pf->num_lan_qps = 1;
10056                 queues_left -= pf->num_lan_qps;
10057
10058                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10059 #ifdef I40E_FCOE
10060                                I40E_FLAG_FCOE_ENABLED   |
10061 #endif
10062                                I40E_FLAG_FD_SB_ENABLED  |
10063                                I40E_FLAG_FD_ATR_ENABLED |
10064                                I40E_FLAG_DCB_ENABLED    |
10065                                I40E_FLAG_VMDQ_ENABLED);
10066         } else {
10067                 /* Not enough queues for all TCs */
10068                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10069                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10070                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10071                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10072                 }
10073                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10074                                         num_online_cpus());
10075                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10076                                         pf->hw.func_caps.num_tx_qp);
10077
10078                 queues_left -= pf->num_lan_qps;
10079         }
10080
10081 #ifdef I40E_FCOE
10082         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10083                 if (I40E_DEFAULT_FCOE <= queues_left) {
10084                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10085                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10086                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10087                 } else {
10088                         pf->num_fcoe_qps = 0;
10089                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10090                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10091                 }
10092
10093                 queues_left -= pf->num_fcoe_qps;
10094         }
10095
10096 #endif
10097         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10098                 if (queues_left > 1) {
10099                         queues_left -= 1; /* save 1 queue for FD */
10100                 } else {
10101                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10102                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10103                 }
10104         }
10105
10106         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10107             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10108                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10109                                         (queues_left / pf->num_vf_qps));
10110                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10111         }
10112
10113         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10114             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10115                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10116                                           (queues_left / pf->num_vmdq_qps));
10117                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10118         }
10119
10120         pf->queues_left = queues_left;
10121         dev_dbg(&pf->pdev->dev,
10122                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10123                 pf->hw.func_caps.num_tx_qp,
10124                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10125                 pf->num_lan_qps, pf->rss_size, pf->num_req_vfs, pf->num_vf_qps,
10126                 pf->num_vmdq_vsis, pf->num_vmdq_qps, queues_left);
10127 #ifdef I40E_FCOE
10128         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10129 #endif
10130 }
10131
10132 /**
10133  * i40e_setup_pf_filter_control - Setup PF static filter control
10134  * @pf: PF to be setup
10135  *
10136  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10137  * settings. If PE/FCoE are enabled then it will also set the per PF
10138  * based filter sizes required for them. It also enables Flow director,
10139  * ethertype and macvlan type filter settings for the pf.
10140  *
10141  * Returns 0 on success, negative on failure
10142  **/
10143 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10144 {
10145         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10146
10147         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10148
10149         /* Flow Director is enabled */
10150         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10151                 settings->enable_fdir = true;
10152
10153         /* Ethtype and MACVLAN filters enabled for PF */
10154         settings->enable_ethtype = true;
10155         settings->enable_macvlan = true;
10156
10157         if (i40e_set_filter_control(&pf->hw, settings))
10158                 return -ENOENT;
10159
10160         return 0;
10161 }
10162
10163 #define INFO_STRING_LEN 255
10164 static void i40e_print_features(struct i40e_pf *pf)
10165 {
10166         struct i40e_hw *hw = &pf->hw;
10167         char *buf, *string;
10168
10169         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10170         if (!string) {
10171                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10172                 return;
10173         }
10174
10175         buf = string;
10176
10177         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
10178 #ifdef CONFIG_PCI_IOV
10179         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
10180 #endif
10181         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
10182                        pf->hw.func_caps.num_vsis,
10183                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
10184                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10185
10186         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10187                 buf += sprintf(buf, "RSS ");
10188         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10189                 buf += sprintf(buf, "FD_ATR ");
10190         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10191                 buf += sprintf(buf, "FD_SB ");
10192                 buf += sprintf(buf, "NTUPLE ");
10193         }
10194         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10195                 buf += sprintf(buf, "DCB ");
10196 #if IS_ENABLED(CONFIG_VXLAN)
10197         buf += sprintf(buf, "VxLAN ");
10198 #endif
10199         if (pf->flags & I40E_FLAG_PTP)
10200                 buf += sprintf(buf, "PTP ");
10201 #ifdef I40E_FCOE
10202         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10203                 buf += sprintf(buf, "FCOE ");
10204 #endif
10205         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10206                 buf += sprintf(buf, "VEB ");
10207         else
10208                 buf += sprintf(buf, "VEPA ");
10209
10210         BUG_ON(buf > (string + INFO_STRING_LEN));
10211         dev_info(&pf->pdev->dev, "%s\n", string);
10212         kfree(string);
10213 }
10214
10215 /**
10216  * i40e_probe - Device initialization routine
10217  * @pdev: PCI device information struct
10218  * @ent: entry in i40e_pci_tbl
10219  *
10220  * i40e_probe initializes a PF identified by a pci_dev structure.
10221  * The OS initialization, configuring of the PF private structure,
10222  * and a hardware reset occur.
10223  *
10224  * Returns 0 on success, negative on failure
10225  **/
10226 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10227 {
10228         struct i40e_aq_get_phy_abilities_resp abilities;
10229         struct i40e_pf *pf;
10230         struct i40e_hw *hw;
10231         static u16 pfs_found;
10232         u16 wol_nvm_bits;
10233         u16 link_status;
10234         int err;
10235         u32 len;
10236         u32 val;
10237         u32 i;
10238         u8 set_fc_aq_fail;
10239
10240         err = pci_enable_device_mem(pdev);
10241         if (err)
10242                 return err;
10243
10244         /* set up for high or low dma */
10245         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10246         if (err) {
10247                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10248                 if (err) {
10249                         dev_err(&pdev->dev,
10250                                 "DMA configuration failed: 0x%x\n", err);
10251                         goto err_dma;
10252                 }
10253         }
10254
10255         /* set up pci connections */
10256         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10257                                            IORESOURCE_MEM), i40e_driver_name);
10258         if (err) {
10259                 dev_info(&pdev->dev,
10260                          "pci_request_selected_regions failed %d\n", err);
10261                 goto err_pci_reg;
10262         }
10263
10264         pci_enable_pcie_error_reporting(pdev);
10265         pci_set_master(pdev);
10266
10267         /* Now that we have a PCI connection, we need to do the
10268          * low level device setup.  This is primarily setting up
10269          * the Admin Queue structures and then querying for the
10270          * device's current profile information.
10271          */
10272         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10273         if (!pf) {
10274                 err = -ENOMEM;
10275                 goto err_pf_alloc;
10276         }
10277         pf->next_vsi = 0;
10278         pf->pdev = pdev;
10279         set_bit(__I40E_DOWN, &pf->state);
10280
10281         hw = &pf->hw;
10282         hw->back = pf;
10283
10284         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10285                                 I40E_MAX_CSR_SPACE);
10286
10287         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10288         if (!hw->hw_addr) {
10289                 err = -EIO;
10290                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10291                          (unsigned int)pci_resource_start(pdev, 0),
10292                          pf->ioremap_len, err);
10293                 goto err_ioremap;
10294         }
10295         hw->vendor_id = pdev->vendor;
10296         hw->device_id = pdev->device;
10297         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10298         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10299         hw->subsystem_device_id = pdev->subsystem_device;
10300         hw->bus.device = PCI_SLOT(pdev->devfn);
10301         hw->bus.func = PCI_FUNC(pdev->devfn);
10302         pf->instance = pfs_found;
10303
10304         if (debug != -1) {
10305                 pf->msg_enable = pf->hw.debug_mask;
10306                 pf->msg_enable = debug;
10307         }
10308
10309         /* do a special CORER for clearing PXE mode once at init */
10310         if (hw->revision_id == 0 &&
10311             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10312                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10313                 i40e_flush(hw);
10314                 msleep(200);
10315                 pf->corer_count++;
10316
10317                 i40e_clear_pxe_mode(hw);
10318         }
10319
10320         /* Reset here to make sure all is clean and to define PF 'n' */
10321         i40e_clear_hw(hw);
10322         err = i40e_pf_reset(hw);
10323         if (err) {
10324                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10325                 goto err_pf_reset;
10326         }
10327         pf->pfr_count++;
10328
10329         hw->aq.num_arq_entries = I40E_AQ_LEN;
10330         hw->aq.num_asq_entries = I40E_AQ_LEN;
10331         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10332         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10333         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10334
10335         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10336                  "%s-%s:misc",
10337                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10338
10339         err = i40e_init_shared_code(hw);
10340         if (err) {
10341                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10342                          err);
10343                 goto err_pf_reset;
10344         }
10345
10346         /* set up a default setting for link flow control */
10347         pf->hw.fc.requested_mode = I40E_FC_NONE;
10348
10349         /* set up the locks for the AQ, do this only once in probe
10350          * and destroy them only once in remove
10351          */
10352         mutex_init(&hw->aq.asq_mutex);
10353         mutex_init(&hw->aq.arq_mutex);
10354
10355         err = i40e_init_adminq(hw);
10356
10357         /* provide nvm, fw, api versions */
10358         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10359                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10360                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10361                  i40e_nvm_version_str(hw));
10362
10363         if (err) {
10364                 dev_info(&pdev->dev,
10365                          "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");
10366                 goto err_pf_reset;
10367         }
10368
10369         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10370             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10371                 dev_info(&pdev->dev,
10372                          "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");
10373         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10374                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10375                 dev_info(&pdev->dev,
10376                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10377
10378         i40e_verify_eeprom(pf);
10379
10380         /* Rev 0 hardware was never productized */
10381         if (hw->revision_id < 1)
10382                 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");
10383
10384         i40e_clear_pxe_mode(hw);
10385         err = i40e_get_capabilities(pf);
10386         if (err)
10387                 goto err_adminq_setup;
10388
10389         err = i40e_sw_init(pf);
10390         if (err) {
10391                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10392                 goto err_sw_init;
10393         }
10394
10395         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10396                                 hw->func_caps.num_rx_qp,
10397                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10398         if (err) {
10399                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10400                 goto err_init_lan_hmc;
10401         }
10402
10403         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10404         if (err) {
10405                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10406                 err = -ENOENT;
10407                 goto err_configure_lan_hmc;
10408         }
10409
10410         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10411          * Ignore error return codes because if it was already disabled via
10412          * hardware settings this will fail
10413          */
10414         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10415             (pf->hw.aq.fw_maj_ver < 4)) {
10416                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10417                 i40e_aq_stop_lldp(hw, true, NULL);
10418         }
10419
10420         i40e_get_mac_addr(hw, hw->mac.addr);
10421         if (!is_valid_ether_addr(hw->mac.addr)) {
10422                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10423                 err = -EIO;
10424                 goto err_mac_addr;
10425         }
10426         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10427         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10428         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10429         if (is_valid_ether_addr(hw->mac.port_addr))
10430                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10431 #ifdef I40E_FCOE
10432         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10433         if (err)
10434                 dev_info(&pdev->dev,
10435                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10436         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10437                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10438                          hw->mac.san_addr);
10439                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10440         }
10441         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10442 #endif /* I40E_FCOE */
10443
10444         pci_set_drvdata(pdev, pf);
10445         pci_save_state(pdev);
10446 #ifdef CONFIG_I40E_DCB
10447         err = i40e_init_pf_dcb(pf);
10448         if (err) {
10449                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10450                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10451                 /* Continue without DCB enabled */
10452         }
10453 #endif /* CONFIG_I40E_DCB */
10454
10455         /* set up periodic task facility */
10456         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10457         pf->service_timer_period = HZ;
10458
10459         INIT_WORK(&pf->service_task, i40e_service_task);
10460         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10461         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10462
10463         /* NVM bit on means WoL disabled for the port */
10464         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10465         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10466                 pf->wol_en = false;
10467         else
10468                 pf->wol_en = true;
10469         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10470
10471         /* set up the main switch operations */
10472         i40e_determine_queue_usage(pf);
10473         err = i40e_init_interrupt_scheme(pf);
10474         if (err)
10475                 goto err_switch_setup;
10476
10477         /* The number of VSIs reported by the FW is the minimum guaranteed
10478          * to us; HW supports far more and we share the remaining pool with
10479          * the other PFs. We allocate space for more than the guarantee with
10480          * the understanding that we might not get them all later.
10481          */
10482         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10483                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10484         else
10485                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10486
10487         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10488         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10489         pf->vsi = kzalloc(len, GFP_KERNEL);
10490         if (!pf->vsi) {
10491                 err = -ENOMEM;
10492                 goto err_switch_setup;
10493         }
10494
10495 #ifdef CONFIG_PCI_IOV
10496         /* prep for VF support */
10497         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10498             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10499             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10500                 if (pci_num_vf(pdev))
10501                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10502         }
10503 #endif
10504         err = i40e_setup_pf_switch(pf, false);
10505         if (err) {
10506                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10507                 goto err_vsis;
10508         }
10509
10510         /* Make sure flow control is set according to current settings */
10511         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10512         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10513                 dev_dbg(&pf->pdev->dev,
10514                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10515                         i40e_stat_str(hw, err),
10516                         i40e_aq_str(hw, hw->aq.asq_last_status));
10517         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10518                 dev_dbg(&pf->pdev->dev,
10519                         "Set fc with err %s aq_err %s on set_phy_config\n",
10520                         i40e_stat_str(hw, err),
10521                         i40e_aq_str(hw, hw->aq.asq_last_status));
10522         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10523                 dev_dbg(&pf->pdev->dev,
10524                         "Set fc with err %s aq_err %s on get_link_info\n",
10525                         i40e_stat_str(hw, err),
10526                         i40e_aq_str(hw, hw->aq.asq_last_status));
10527
10528         /* if FDIR VSI was set up, start it now */
10529         for (i = 0; i < pf->num_alloc_vsi; i++) {
10530                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10531                         i40e_vsi_open(pf->vsi[i]);
10532                         break;
10533                 }
10534         }
10535
10536         /* driver is only interested in link up/down and module qualification
10537          * reports from firmware
10538          */
10539         err = i40e_aq_set_phy_int_mask(&pf->hw,
10540                                        I40E_AQ_EVENT_LINK_UPDOWN |
10541                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10542         if (err)
10543                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10544                          i40e_stat_str(&pf->hw, err),
10545                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10546
10547         /* Reconfigure hardware for allowing smaller MSS in the case
10548          * of TSO, so that we avoid the MDD being fired and causing
10549          * a reset in the case of small MSS+TSO.
10550          */
10551         val = rd32(hw, I40E_REG_MSS);
10552         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10553                 val &= ~I40E_REG_MSS_MIN_MASK;
10554                 val |= I40E_64BYTE_MSS;
10555                 wr32(hw, I40E_REG_MSS, val);
10556         }
10557
10558         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10559             (pf->hw.aq.fw_maj_ver < 4)) {
10560                 msleep(75);
10561                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10562                 if (err)
10563                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10564                                  i40e_stat_str(&pf->hw, err),
10565                                  i40e_aq_str(&pf->hw,
10566                                              pf->hw.aq.asq_last_status));
10567         }
10568         /* The main driver is (mostly) up and happy. We need to set this state
10569          * before setting up the misc vector or we get a race and the vector
10570          * ends up disabled forever.
10571          */
10572         clear_bit(__I40E_DOWN, &pf->state);
10573
10574         /* In case of MSIX we are going to setup the misc vector right here
10575          * to handle admin queue events etc. In case of legacy and MSI
10576          * the misc functionality and queue processing is combined in
10577          * the same vector and that gets setup at open.
10578          */
10579         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10580                 err = i40e_setup_misc_vector(pf);
10581                 if (err) {
10582                         dev_info(&pdev->dev,
10583                                  "setup of misc vector failed: %d\n", err);
10584                         goto err_vsis;
10585                 }
10586         }
10587
10588 #ifdef CONFIG_PCI_IOV
10589         /* prep for VF support */
10590         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10591             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10592             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10593                 u32 val;
10594
10595                 /* disable link interrupts for VFs */
10596                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10597                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10598                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10599                 i40e_flush(hw);
10600
10601                 if (pci_num_vf(pdev)) {
10602                         dev_info(&pdev->dev,
10603                                  "Active VFs found, allocating resources.\n");
10604                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10605                         if (err)
10606                                 dev_info(&pdev->dev,
10607                                          "Error %d allocating resources for existing VFs\n",
10608                                          err);
10609                 }
10610         }
10611 #endif /* CONFIG_PCI_IOV */
10612
10613         pfs_found++;
10614
10615         i40e_dbg_pf_init(pf);
10616
10617         /* tell the firmware that we're starting */
10618         i40e_send_version(pf);
10619
10620         /* since everything's happy, start the service_task timer */
10621         mod_timer(&pf->service_timer,
10622                   round_jiffies(jiffies + pf->service_timer_period));
10623
10624 #ifdef I40E_FCOE
10625         /* create FCoE interface */
10626         i40e_fcoe_vsi_setup(pf);
10627
10628 #endif
10629 #define PCI_SPEED_SIZE 8
10630 #define PCI_WIDTH_SIZE 8
10631         /* Devices on the IOSF bus do not have this information
10632          * and will report PCI Gen 1 x 1 by default so don't bother
10633          * checking them.
10634          */
10635         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10636                 char speed[PCI_SPEED_SIZE] = "Unknown";
10637                 char width[PCI_WIDTH_SIZE] = "Unknown";
10638
10639                 /* Get the negotiated link width and speed from PCI config
10640                  * space
10641                  */
10642                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10643                                           &link_status);
10644
10645                 i40e_set_pci_config_data(hw, link_status);
10646
10647                 switch (hw->bus.speed) {
10648                 case i40e_bus_speed_8000:
10649                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10650                 case i40e_bus_speed_5000:
10651                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10652                 case i40e_bus_speed_2500:
10653                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10654                 default:
10655                         break;
10656                 }
10657                 switch (hw->bus.width) {
10658                 case i40e_bus_width_pcie_x8:
10659                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10660                 case i40e_bus_width_pcie_x4:
10661                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10662                 case i40e_bus_width_pcie_x2:
10663                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10664                 case i40e_bus_width_pcie_x1:
10665                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10666                 default:
10667                         break;
10668                 }
10669
10670                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10671                          speed, width);
10672
10673                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10674                     hw->bus.speed < i40e_bus_speed_8000) {
10675                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10676                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10677                 }
10678         }
10679
10680         /* get the requested speeds from the fw */
10681         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10682         if (err)
10683                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10684                         i40e_stat_str(&pf->hw, err),
10685                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10686         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10687
10688         /* get the supported phy types from the fw */
10689         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10690         if (err)
10691                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10692                         i40e_stat_str(&pf->hw, err),
10693                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10694         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10695
10696         /* Add a filter to drop all Flow control frames from any VSI from being
10697          * transmitted. By doing so we stop a malicious VF from sending out
10698          * PAUSE or PFC frames and potentially controlling traffic for other
10699          * PF/VF VSIs.
10700          * The FW can still send Flow control frames if enabled.
10701          */
10702         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10703                                                        pf->main_vsi_seid);
10704
10705         /* print a string summarizing features */
10706         i40e_print_features(pf);
10707
10708         return 0;
10709
10710         /* Unwind what we've done if something failed in the setup */
10711 err_vsis:
10712         set_bit(__I40E_DOWN, &pf->state);
10713         i40e_clear_interrupt_scheme(pf);
10714         kfree(pf->vsi);
10715 err_switch_setup:
10716         i40e_reset_interrupt_capability(pf);
10717         del_timer_sync(&pf->service_timer);
10718 err_mac_addr:
10719 err_configure_lan_hmc:
10720         (void)i40e_shutdown_lan_hmc(hw);
10721 err_init_lan_hmc:
10722         kfree(pf->qp_pile);
10723 err_sw_init:
10724 err_adminq_setup:
10725         (void)i40e_shutdown_adminq(hw);
10726 err_pf_reset:
10727         iounmap(hw->hw_addr);
10728 err_ioremap:
10729         kfree(pf);
10730 err_pf_alloc:
10731         pci_disable_pcie_error_reporting(pdev);
10732         pci_release_selected_regions(pdev,
10733                                      pci_select_bars(pdev, IORESOURCE_MEM));
10734 err_pci_reg:
10735 err_dma:
10736         pci_disable_device(pdev);
10737         return err;
10738 }
10739
10740 /**
10741  * i40e_remove - Device removal routine
10742  * @pdev: PCI device information struct
10743  *
10744  * i40e_remove is called by the PCI subsystem to alert the driver
10745  * that is should release a PCI device.  This could be caused by a
10746  * Hot-Plug event, or because the driver is going to be removed from
10747  * memory.
10748  **/
10749 static void i40e_remove(struct pci_dev *pdev)
10750 {
10751         struct i40e_pf *pf = pci_get_drvdata(pdev);
10752         struct i40e_hw *hw = &pf->hw;
10753         i40e_status ret_code;
10754         int i;
10755
10756         i40e_dbg_pf_exit(pf);
10757
10758         i40e_ptp_stop(pf);
10759
10760         /* Disable RSS in hw */
10761         wr32(hw, I40E_PFQF_HENA(0), 0);
10762         wr32(hw, I40E_PFQF_HENA(1), 0);
10763
10764         /* no more scheduling of any task */
10765         set_bit(__I40E_DOWN, &pf->state);
10766         del_timer_sync(&pf->service_timer);
10767         cancel_work_sync(&pf->service_task);
10768
10769         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10770                 i40e_free_vfs(pf);
10771                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10772         }
10773
10774         i40e_fdir_teardown(pf);
10775
10776         /* If there is a switch structure or any orphans, remove them.
10777          * This will leave only the PF's VSI remaining.
10778          */
10779         for (i = 0; i < I40E_MAX_VEB; i++) {
10780                 if (!pf->veb[i])
10781                         continue;
10782
10783                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10784                     pf->veb[i]->uplink_seid == 0)
10785                         i40e_switch_branch_release(pf->veb[i]);
10786         }
10787
10788         /* Now we can shutdown the PF's VSI, just before we kill
10789          * adminq and hmc.
10790          */
10791         if (pf->vsi[pf->lan_vsi])
10792                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10793
10794         /* shutdown and destroy the HMC */
10795         if (pf->hw.hmc.hmc_obj) {
10796                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10797                 if (ret_code)
10798                         dev_warn(&pdev->dev,
10799                                  "Failed to destroy the HMC resources: %d\n",
10800                                  ret_code);
10801         }
10802
10803         /* shutdown the adminq */
10804         ret_code = i40e_shutdown_adminq(&pf->hw);
10805         if (ret_code)
10806                 dev_warn(&pdev->dev,
10807                          "Failed to destroy the Admin Queue resources: %d\n",
10808                          ret_code);
10809
10810         /* destroy the locks only once, here */
10811         mutex_destroy(&hw->aq.arq_mutex);
10812         mutex_destroy(&hw->aq.asq_mutex);
10813
10814         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10815         i40e_clear_interrupt_scheme(pf);
10816         for (i = 0; i < pf->num_alloc_vsi; i++) {
10817                 if (pf->vsi[i]) {
10818                         i40e_vsi_clear_rings(pf->vsi[i]);
10819                         i40e_vsi_clear(pf->vsi[i]);
10820                         pf->vsi[i] = NULL;
10821                 }
10822         }
10823
10824         for (i = 0; i < I40E_MAX_VEB; i++) {
10825                 kfree(pf->veb[i]);
10826                 pf->veb[i] = NULL;
10827         }
10828
10829         kfree(pf->qp_pile);
10830         kfree(pf->vsi);
10831
10832         iounmap(pf->hw.hw_addr);
10833         kfree(pf);
10834         pci_release_selected_regions(pdev,
10835                                      pci_select_bars(pdev, IORESOURCE_MEM));
10836
10837         pci_disable_pcie_error_reporting(pdev);
10838         pci_disable_device(pdev);
10839 }
10840
10841 /**
10842  * i40e_pci_error_detected - warning that something funky happened in PCI land
10843  * @pdev: PCI device information struct
10844  *
10845  * Called to warn that something happened and the error handling steps
10846  * are in progress.  Allows the driver to quiesce things, be ready for
10847  * remediation.
10848  **/
10849 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10850                                                 enum pci_channel_state error)
10851 {
10852         struct i40e_pf *pf = pci_get_drvdata(pdev);
10853
10854         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10855
10856         if (!pf) {
10857                 dev_info(&pdev->dev,
10858                          "Cannot recover - error happened during device probe\n");
10859                 return PCI_ERS_RESULT_DISCONNECT;
10860         }
10861
10862         /* shutdown all operations */
10863         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10864                 rtnl_lock();
10865                 i40e_prep_for_reset(pf);
10866                 rtnl_unlock();
10867         }
10868
10869         /* Request a slot reset */
10870         return PCI_ERS_RESULT_NEED_RESET;
10871 }
10872
10873 /**
10874  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10875  * @pdev: PCI device information struct
10876  *
10877  * Called to find if the driver can work with the device now that
10878  * the pci slot has been reset.  If a basic connection seems good
10879  * (registers are readable and have sane content) then return a
10880  * happy little PCI_ERS_RESULT_xxx.
10881  **/
10882 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10883 {
10884         struct i40e_pf *pf = pci_get_drvdata(pdev);
10885         pci_ers_result_t result;
10886         int err;
10887         u32 reg;
10888
10889         dev_dbg(&pdev->dev, "%s\n", __func__);
10890         if (pci_enable_device_mem(pdev)) {
10891                 dev_info(&pdev->dev,
10892                          "Cannot re-enable PCI device after reset.\n");
10893                 result = PCI_ERS_RESULT_DISCONNECT;
10894         } else {
10895                 pci_set_master(pdev);
10896                 pci_restore_state(pdev);
10897                 pci_save_state(pdev);
10898                 pci_wake_from_d3(pdev, false);
10899
10900                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10901                 if (reg == 0)
10902                         result = PCI_ERS_RESULT_RECOVERED;
10903                 else
10904                         result = PCI_ERS_RESULT_DISCONNECT;
10905         }
10906
10907         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10908         if (err) {
10909                 dev_info(&pdev->dev,
10910                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10911                          err);
10912                 /* non-fatal, continue */
10913         }
10914
10915         return result;
10916 }
10917
10918 /**
10919  * i40e_pci_error_resume - restart operations after PCI error recovery
10920  * @pdev: PCI device information struct
10921  *
10922  * Called to allow the driver to bring things back up after PCI error
10923  * and/or reset recovery has finished.
10924  **/
10925 static void i40e_pci_error_resume(struct pci_dev *pdev)
10926 {
10927         struct i40e_pf *pf = pci_get_drvdata(pdev);
10928
10929         dev_dbg(&pdev->dev, "%s\n", __func__);
10930         if (test_bit(__I40E_SUSPENDED, &pf->state))
10931                 return;
10932
10933         rtnl_lock();
10934         i40e_handle_reset_warning(pf);
10935         rtnl_unlock();
10936 }
10937
10938 /**
10939  * i40e_shutdown - PCI callback for shutting down
10940  * @pdev: PCI device information struct
10941  **/
10942 static void i40e_shutdown(struct pci_dev *pdev)
10943 {
10944         struct i40e_pf *pf = pci_get_drvdata(pdev);
10945         struct i40e_hw *hw = &pf->hw;
10946
10947         set_bit(__I40E_SUSPENDED, &pf->state);
10948         set_bit(__I40E_DOWN, &pf->state);
10949         rtnl_lock();
10950         i40e_prep_for_reset(pf);
10951         rtnl_unlock();
10952
10953         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10954         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10955
10956         del_timer_sync(&pf->service_timer);
10957         cancel_work_sync(&pf->service_task);
10958         i40e_fdir_teardown(pf);
10959
10960         rtnl_lock();
10961         i40e_prep_for_reset(pf);
10962         rtnl_unlock();
10963
10964         wr32(hw, I40E_PFPM_APM,
10965              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10966         wr32(hw, I40E_PFPM_WUFC,
10967              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10968
10969         i40e_clear_interrupt_scheme(pf);
10970
10971         if (system_state == SYSTEM_POWER_OFF) {
10972                 pci_wake_from_d3(pdev, pf->wol_en);
10973                 pci_set_power_state(pdev, PCI_D3hot);
10974         }
10975 }
10976
10977 #ifdef CONFIG_PM
10978 /**
10979  * i40e_suspend - PCI callback for moving to D3
10980  * @pdev: PCI device information struct
10981  **/
10982 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10983 {
10984         struct i40e_pf *pf = pci_get_drvdata(pdev);
10985         struct i40e_hw *hw = &pf->hw;
10986
10987         set_bit(__I40E_SUSPENDED, &pf->state);
10988         set_bit(__I40E_DOWN, &pf->state);
10989
10990         rtnl_lock();
10991         i40e_prep_for_reset(pf);
10992         rtnl_unlock();
10993
10994         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10995         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10996
10997         pci_wake_from_d3(pdev, pf->wol_en);
10998         pci_set_power_state(pdev, PCI_D3hot);
10999
11000         return 0;
11001 }
11002
11003 /**
11004  * i40e_resume - PCI callback for waking up from D3
11005  * @pdev: PCI device information struct
11006  **/
11007 static int i40e_resume(struct pci_dev *pdev)
11008 {
11009         struct i40e_pf *pf = pci_get_drvdata(pdev);
11010         u32 err;
11011
11012         pci_set_power_state(pdev, PCI_D0);
11013         pci_restore_state(pdev);
11014         /* pci_restore_state() clears dev->state_saves, so
11015          * call pci_save_state() again to restore it.
11016          */
11017         pci_save_state(pdev);
11018
11019         err = pci_enable_device_mem(pdev);
11020         if (err) {
11021                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11022                 return err;
11023         }
11024         pci_set_master(pdev);
11025
11026         /* no wakeup events while running */
11027         pci_wake_from_d3(pdev, false);
11028
11029         /* handling the reset will rebuild the device state */
11030         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11031                 clear_bit(__I40E_DOWN, &pf->state);
11032                 rtnl_lock();
11033                 i40e_reset_and_rebuild(pf, false);
11034                 rtnl_unlock();
11035         }
11036
11037         return 0;
11038 }
11039
11040 #endif
11041 static const struct pci_error_handlers i40e_err_handler = {
11042         .error_detected = i40e_pci_error_detected,
11043         .slot_reset = i40e_pci_error_slot_reset,
11044         .resume = i40e_pci_error_resume,
11045 };
11046
11047 static struct pci_driver i40e_driver = {
11048         .name     = i40e_driver_name,
11049         .id_table = i40e_pci_tbl,
11050         .probe    = i40e_probe,
11051         .remove   = i40e_remove,
11052 #ifdef CONFIG_PM
11053         .suspend  = i40e_suspend,
11054         .resume   = i40e_resume,
11055 #endif
11056         .shutdown = i40e_shutdown,
11057         .err_handler = &i40e_err_handler,
11058         .sriov_configure = i40e_pci_sriov_configure,
11059 };
11060
11061 /**
11062  * i40e_init_module - Driver registration routine
11063  *
11064  * i40e_init_module is the first routine called when the driver is
11065  * loaded. All it does is register with the PCI subsystem.
11066  **/
11067 static int __init i40e_init_module(void)
11068 {
11069         pr_info("%s: %s - version %s\n", i40e_driver_name,
11070                 i40e_driver_string, i40e_driver_version_str);
11071         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11072
11073         i40e_dbg_init();
11074         return pci_register_driver(&i40e_driver);
11075 }
11076 module_init(i40e_init_module);
11077
11078 /**
11079  * i40e_exit_module - Driver exit cleanup routine
11080  *
11081  * i40e_exit_module is called just before the driver is removed
11082  * from memory.
11083  **/
11084 static void __exit i40e_exit_module(void)
11085 {
11086         pci_unregister_driver(&i40e_driver);
11087         i40e_dbg_exit();
11088 }
11089 module_exit(i40e_exit_module);