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 28
  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_rm_default_mac_filter - Remove the default MAC filter set by NVM
1321  * @vsi: the PF Main VSI - inappropriate for any other VSI
1322  * @macaddr: the MAC address
1323  *
1324  * Some older firmware configurations set up a default promiscuous VLAN
1325  * filter that needs to be removed.
1326  **/
1327 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1328 {
1329         struct i40e_aqc_remove_macvlan_element_data element;
1330         struct i40e_pf *pf = vsi->back;
1331         i40e_status ret;
1332
1333         /* Only appropriate for the PF main VSI */
1334         if (vsi->type != I40E_VSI_MAIN)
1335                 return -EINVAL;
1336
1337         memset(&element, 0, sizeof(element));
1338         ether_addr_copy(element.mac_addr, macaddr);
1339         element.vlan_tag = 0;
1340         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1341                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1342         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1343         if (ret)
1344                 return -ENOENT;
1345
1346         return 0;
1347 }
1348
1349 /**
1350  * i40e_add_filter - Add a mac/vlan filter to the VSI
1351  * @vsi: the VSI to be searched
1352  * @macaddr: the MAC address
1353  * @vlan: the vlan
1354  * @is_vf: make sure its a VF filter, else doesn't matter
1355  * @is_netdev: make sure its a netdev filter, else doesn't matter
1356  *
1357  * Returns ptr to the filter object or NULL when no memory available.
1358  **/
1359 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1360                                         u8 *macaddr, s16 vlan,
1361                                         bool is_vf, bool is_netdev)
1362 {
1363         struct i40e_mac_filter *f;
1364
1365         if (!vsi || !macaddr)
1366                 return NULL;
1367
1368         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1369         if (!f) {
1370                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1371                 if (!f)
1372                         goto add_filter_out;
1373
1374                 ether_addr_copy(f->macaddr, macaddr);
1375                 f->vlan = vlan;
1376                 f->changed = true;
1377
1378                 INIT_LIST_HEAD(&f->list);
1379                 list_add(&f->list, &vsi->mac_filter_list);
1380         }
1381
1382         /* increment counter and add a new flag if needed */
1383         if (is_vf) {
1384                 if (!f->is_vf) {
1385                         f->is_vf = true;
1386                         f->counter++;
1387                 }
1388         } else if (is_netdev) {
1389                 if (!f->is_netdev) {
1390                         f->is_netdev = true;
1391                         f->counter++;
1392                 }
1393         } else {
1394                 f->counter++;
1395         }
1396
1397         /* changed tells sync_filters_subtask to
1398          * push the filter down to the firmware
1399          */
1400         if (f->changed) {
1401                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1402                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1403         }
1404
1405 add_filter_out:
1406         return f;
1407 }
1408
1409 /**
1410  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1411  * @vsi: the VSI to be searched
1412  * @macaddr: the MAC address
1413  * @vlan: the vlan
1414  * @is_vf: make sure it's a VF filter, else doesn't matter
1415  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1416  **/
1417 void i40e_del_filter(struct i40e_vsi *vsi,
1418                      u8 *macaddr, s16 vlan,
1419                      bool is_vf, bool is_netdev)
1420 {
1421         struct i40e_mac_filter *f;
1422
1423         if (!vsi || !macaddr)
1424                 return;
1425
1426         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1427         if (!f || f->counter == 0)
1428                 return;
1429
1430         if (is_vf) {
1431                 if (f->is_vf) {
1432                         f->is_vf = false;
1433                         f->counter--;
1434                 }
1435         } else if (is_netdev) {
1436                 if (f->is_netdev) {
1437                         f->is_netdev = false;
1438                         f->counter--;
1439                 }
1440         } else {
1441                 /* make sure we don't remove a filter in use by VF or netdev */
1442                 int min_f = 0;
1443
1444                 min_f += (f->is_vf ? 1 : 0);
1445                 min_f += (f->is_netdev ? 1 : 0);
1446
1447                 if (f->counter > min_f)
1448                         f->counter--;
1449         }
1450
1451         /* counter == 0 tells sync_filters_subtask to
1452          * remove the filter from the firmware's list
1453          */
1454         if (f->counter == 0) {
1455                 f->changed = true;
1456                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1457                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1458         }
1459 }
1460
1461 /**
1462  * i40e_set_mac - NDO callback to set mac address
1463  * @netdev: network interface device structure
1464  * @p: pointer to an address structure
1465  *
1466  * Returns 0 on success, negative on failure
1467  **/
1468 #ifdef I40E_FCOE
1469 int i40e_set_mac(struct net_device *netdev, void *p)
1470 #else
1471 static int i40e_set_mac(struct net_device *netdev, void *p)
1472 #endif
1473 {
1474         struct i40e_netdev_priv *np = netdev_priv(netdev);
1475         struct i40e_vsi *vsi = np->vsi;
1476         struct i40e_pf *pf = vsi->back;
1477         struct i40e_hw *hw = &pf->hw;
1478         struct sockaddr *addr = p;
1479         struct i40e_mac_filter *f;
1480
1481         if (!is_valid_ether_addr(addr->sa_data))
1482                 return -EADDRNOTAVAIL;
1483
1484         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1485                 netdev_info(netdev, "already using mac address %pM\n",
1486                             addr->sa_data);
1487                 return 0;
1488         }
1489
1490         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1491             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1492                 return -EADDRNOTAVAIL;
1493
1494         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1495                 netdev_info(netdev, "returning to hw mac address %pM\n",
1496                             hw->mac.addr);
1497         else
1498                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1499
1500         if (vsi->type == I40E_VSI_MAIN) {
1501                 i40e_status ret;
1502
1503                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1504                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1505                                                 addr->sa_data, NULL);
1506                 if (ret) {
1507                         netdev_info(netdev,
1508                                     "Addr change for Main VSI failed: %d\n",
1509                                     ret);
1510                         return -EADDRNOTAVAIL;
1511                 }
1512         }
1513
1514         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1515                 struct i40e_aqc_remove_macvlan_element_data element;
1516
1517                 memset(&element, 0, sizeof(element));
1518                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1519                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1520                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1521         } else {
1522                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1523                                 false, false);
1524         }
1525
1526         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1527                 struct i40e_aqc_add_macvlan_element_data element;
1528
1529                 memset(&element, 0, sizeof(element));
1530                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1531                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1532                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1533         } else {
1534                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1535                                     false, false);
1536                 if (f)
1537                         f->is_laa = true;
1538         }
1539
1540         i40e_sync_vsi_filters(vsi, false);
1541         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1542
1543         return 0;
1544 }
1545
1546 /**
1547  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1548  * @vsi: the VSI being setup
1549  * @ctxt: VSI context structure
1550  * @enabled_tc: Enabled TCs bitmap
1551  * @is_add: True if called before Add VSI
1552  *
1553  * Setup VSI queue mapping for enabled traffic classes.
1554  **/
1555 #ifdef I40E_FCOE
1556 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1557                               struct i40e_vsi_context *ctxt,
1558                               u8 enabled_tc,
1559                               bool is_add)
1560 #else
1561 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1562                                      struct i40e_vsi_context *ctxt,
1563                                      u8 enabled_tc,
1564                                      bool is_add)
1565 #endif
1566 {
1567         struct i40e_pf *pf = vsi->back;
1568         u16 sections = 0;
1569         u8 netdev_tc = 0;
1570         u16 numtc = 0;
1571         u16 qcount;
1572         u8 offset;
1573         u16 qmap;
1574         int i;
1575         u16 num_tc_qps = 0;
1576
1577         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1578         offset = 0;
1579
1580         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1581                 /* Find numtc from enabled TC bitmap */
1582                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1583                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1584                                 numtc++;
1585                 }
1586                 if (!numtc) {
1587                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1588                         numtc = 1;
1589                 }
1590         } else {
1591                 /* At least TC0 is enabled in case of non-DCB case */
1592                 numtc = 1;
1593         }
1594
1595         vsi->tc_config.numtc = numtc;
1596         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1597         /* Number of queues per enabled TC */
1598         /* In MFP case we can have a much lower count of MSIx
1599          * vectors available and so we need to lower the used
1600          * q count.
1601          */
1602         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1603                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1604         else
1605                 qcount = vsi->alloc_queue_pairs;
1606         num_tc_qps = qcount / numtc;
1607         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1608
1609         /* Setup queue offset/count for all TCs for given VSI */
1610         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1611                 /* See if the given TC is enabled for the given VSI */
1612                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1613                         /* TC is enabled */
1614                         int pow, num_qps;
1615
1616                         switch (vsi->type) {
1617                         case I40E_VSI_MAIN:
1618                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1619                                 break;
1620 #ifdef I40E_FCOE
1621                         case I40E_VSI_FCOE:
1622                                 qcount = num_tc_qps;
1623                                 break;
1624 #endif
1625                         case I40E_VSI_FDIR:
1626                         case I40E_VSI_SRIOV:
1627                         case I40E_VSI_VMDQ2:
1628                         default:
1629                                 qcount = num_tc_qps;
1630                                 WARN_ON(i != 0);
1631                                 break;
1632                         }
1633                         vsi->tc_config.tc_info[i].qoffset = offset;
1634                         vsi->tc_config.tc_info[i].qcount = qcount;
1635
1636                         /* find the next higher power-of-2 of num queue pairs */
1637                         num_qps = qcount;
1638                         pow = 0;
1639                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1640                                 pow++;
1641                                 num_qps >>= 1;
1642                         }
1643
1644                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1645                         qmap =
1646                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1647                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1648
1649                         offset += qcount;
1650                 } else {
1651                         /* TC is not enabled so set the offset to
1652                          * default queue and allocate one queue
1653                          * for the given TC.
1654                          */
1655                         vsi->tc_config.tc_info[i].qoffset = 0;
1656                         vsi->tc_config.tc_info[i].qcount = 1;
1657                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1658
1659                         qmap = 0;
1660                 }
1661                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1662         }
1663
1664         /* Set actual Tx/Rx queue pairs */
1665         vsi->num_queue_pairs = offset;
1666         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1667                 if (vsi->req_queue_pairs > 0)
1668                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1669                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1670                         vsi->num_queue_pairs = pf->num_lan_msix;
1671         }
1672
1673         /* Scheduler section valid can only be set for ADD VSI */
1674         if (is_add) {
1675                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1676
1677                 ctxt->info.up_enable_bits = enabled_tc;
1678         }
1679         if (vsi->type == I40E_VSI_SRIOV) {
1680                 ctxt->info.mapping_flags |=
1681                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1682                 for (i = 0; i < vsi->num_queue_pairs; i++)
1683                         ctxt->info.queue_mapping[i] =
1684                                                cpu_to_le16(vsi->base_queue + i);
1685         } else {
1686                 ctxt->info.mapping_flags |=
1687                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1688                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1689         }
1690         ctxt->info.valid_sections |= cpu_to_le16(sections);
1691 }
1692
1693 /**
1694  * i40e_set_rx_mode - NDO callback to set the netdev filters
1695  * @netdev: network interface device structure
1696  **/
1697 #ifdef I40E_FCOE
1698 void i40e_set_rx_mode(struct net_device *netdev)
1699 #else
1700 static void i40e_set_rx_mode(struct net_device *netdev)
1701 #endif
1702 {
1703         struct i40e_netdev_priv *np = netdev_priv(netdev);
1704         struct i40e_mac_filter *f, *ftmp;
1705         struct i40e_vsi *vsi = np->vsi;
1706         struct netdev_hw_addr *uca;
1707         struct netdev_hw_addr *mca;
1708         struct netdev_hw_addr *ha;
1709
1710         /* add addr if not already in the filter list */
1711         netdev_for_each_uc_addr(uca, netdev) {
1712                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1713                         if (i40e_is_vsi_in_vlan(vsi))
1714                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1715                                                      false, true);
1716                         else
1717                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1718                                                 false, true);
1719                 }
1720         }
1721
1722         netdev_for_each_mc_addr(mca, netdev) {
1723                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1724                         if (i40e_is_vsi_in_vlan(vsi))
1725                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1726                                                      false, true);
1727                         else
1728                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1729                                                 false, true);
1730                 }
1731         }
1732
1733         /* remove filter if not in netdev list */
1734         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1735
1736                 if (!f->is_netdev)
1737                         continue;
1738
1739                 netdev_for_each_mc_addr(mca, netdev)
1740                         if (ether_addr_equal(mca->addr, f->macaddr))
1741                                 goto bottom_of_search_loop;
1742
1743                 netdev_for_each_uc_addr(uca, netdev)
1744                         if (ether_addr_equal(uca->addr, f->macaddr))
1745                                 goto bottom_of_search_loop;
1746
1747                 for_each_dev_addr(netdev, ha)
1748                         if (ether_addr_equal(ha->addr, f->macaddr))
1749                                 goto bottom_of_search_loop;
1750
1751                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1752                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1753
1754 bottom_of_search_loop:
1755                 continue;
1756         }
1757
1758         /* check for other flag changes */
1759         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1760                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1761                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1762         }
1763 }
1764
1765 /**
1766  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1767  * @vsi: ptr to the VSI
1768  * @grab_rtnl: whether RTNL needs to be grabbed
1769  *
1770  * Push any outstanding VSI filter changes through the AdminQ.
1771  *
1772  * Returns 0 or error value
1773  **/
1774 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1775 {
1776         struct i40e_mac_filter *f, *ftmp;
1777         bool promisc_forced_on = false;
1778         bool add_happened = false;
1779         int filter_list_len = 0;
1780         u32 changed_flags = 0;
1781         i40e_status ret = 0;
1782         struct i40e_pf *pf;
1783         int num_add = 0;
1784         int num_del = 0;
1785         int aq_err = 0;
1786         u16 cmd_flags;
1787
1788         /* empty array typed pointers, kcalloc later */
1789         struct i40e_aqc_add_macvlan_element_data *add_list;
1790         struct i40e_aqc_remove_macvlan_element_data *del_list;
1791
1792         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1793                 usleep_range(1000, 2000);
1794         pf = vsi->back;
1795
1796         if (vsi->netdev) {
1797                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1798                 vsi->current_netdev_flags = vsi->netdev->flags;
1799         }
1800
1801         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1802                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1803
1804                 filter_list_len = pf->hw.aq.asq_buf_size /
1805                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1806                 del_list = kcalloc(filter_list_len,
1807                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1808                             GFP_KERNEL);
1809                 if (!del_list)
1810                         return -ENOMEM;
1811
1812                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1813                         if (!f->changed)
1814                                 continue;
1815
1816                         if (f->counter != 0)
1817                                 continue;
1818                         f->changed = false;
1819                         cmd_flags = 0;
1820
1821                         /* add to delete list */
1822                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1823                         del_list[num_del].vlan_tag =
1824                                 cpu_to_le16((u16)(f->vlan ==
1825                                             I40E_VLAN_ANY ? 0 : f->vlan));
1826
1827                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1828                         del_list[num_del].flags = cmd_flags;
1829                         num_del++;
1830
1831                         /* unlink from filter list */
1832                         list_del(&f->list);
1833                         kfree(f);
1834
1835                         /* flush a full buffer */
1836                         if (num_del == filter_list_len) {
1837                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1838                                                   vsi->seid, del_list, num_del,
1839                                                   NULL);
1840                                 aq_err = pf->hw.aq.asq_last_status;
1841                                 num_del = 0;
1842                                 memset(del_list, 0, sizeof(*del_list));
1843
1844                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1845                                         dev_info(&pf->pdev->dev,
1846                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1847                                                  i40e_stat_str(&pf->hw, ret),
1848                                                  i40e_aq_str(&pf->hw, aq_err));
1849                         }
1850                 }
1851                 if (num_del) {
1852                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1853                                                      del_list, num_del, NULL);
1854                         aq_err = pf->hw.aq.asq_last_status;
1855                         num_del = 0;
1856
1857                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1858                                 dev_info(&pf->pdev->dev,
1859                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1860                                          i40e_stat_str(&pf->hw, ret),
1861                                          i40e_aq_str(&pf->hw, aq_err));
1862                 }
1863
1864                 kfree(del_list);
1865                 del_list = NULL;
1866
1867                 /* do all the adds now */
1868                 filter_list_len = pf->hw.aq.asq_buf_size /
1869                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1870                 add_list = kcalloc(filter_list_len,
1871                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1872                                GFP_KERNEL);
1873                 if (!add_list)
1874                         return -ENOMEM;
1875
1876                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1877                         if (!f->changed)
1878                                 continue;
1879
1880                         if (f->counter == 0)
1881                                 continue;
1882                         f->changed = false;
1883                         add_happened = true;
1884                         cmd_flags = 0;
1885
1886                         /* add to add array */
1887                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1888                         add_list[num_add].vlan_tag =
1889                                 cpu_to_le16(
1890                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1891                         add_list[num_add].queue_number = 0;
1892
1893                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1894                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1895                         num_add++;
1896
1897                         /* flush a full buffer */
1898                         if (num_add == filter_list_len) {
1899                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1900                                                           add_list, num_add,
1901                                                           NULL);
1902                                 aq_err = pf->hw.aq.asq_last_status;
1903                                 num_add = 0;
1904
1905                                 if (ret)
1906                                         break;
1907                                 memset(add_list, 0, sizeof(*add_list));
1908                         }
1909                 }
1910                 if (num_add) {
1911                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1912                                                   add_list, num_add, NULL);
1913                         aq_err = pf->hw.aq.asq_last_status;
1914                         num_add = 0;
1915                 }
1916                 kfree(add_list);
1917                 add_list = NULL;
1918
1919                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1920                         dev_info(&pf->pdev->dev,
1921                                  "add filter failed, err %s aq_err %s\n",
1922                                  i40e_stat_str(&pf->hw, ret),
1923                                  i40e_aq_str(&pf->hw, aq_err));
1924                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1925                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1926                                       &vsi->state)) {
1927                                 promisc_forced_on = true;
1928                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1929                                         &vsi->state);
1930                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1931                         }
1932                 }
1933         }
1934
1935         /* check for changes in promiscuous modes */
1936         if (changed_flags & IFF_ALLMULTI) {
1937                 bool cur_multipromisc;
1938
1939                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1940                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1941                                                             vsi->seid,
1942                                                             cur_multipromisc,
1943                                                             NULL);
1944                 if (ret)
1945                         dev_info(&pf->pdev->dev,
1946                                  "set multi promisc failed, err %s aq_err %s\n",
1947                                  i40e_stat_str(&pf->hw, ret),
1948                                  i40e_aq_str(&pf->hw,
1949                                              pf->hw.aq.asq_last_status));
1950         }
1951         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1952                 bool cur_promisc;
1953
1954                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1955                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1956                                         &vsi->state));
1957                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1958                         /* set defport ON for Main VSI instead of true promisc
1959                          * this way we will get all unicast/multicast and VLAN
1960                          * promisc behavior but will not get VF or VMDq traffic
1961                          * replicated on the Main VSI.
1962                          */
1963                         if (pf->cur_promisc != cur_promisc) {
1964                                 pf->cur_promisc = cur_promisc;
1965                                 if (grab_rtnl)
1966                                         i40e_do_reset_safe(pf,
1967                                                 BIT(__I40E_PF_RESET_REQUESTED));
1968                                 else
1969                                         i40e_do_reset(pf,
1970                                                 BIT(__I40E_PF_RESET_REQUESTED));
1971                         }
1972                 } else {
1973                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1974                                                           &vsi->back->hw,
1975                                                           vsi->seid,
1976                                                           cur_promisc, NULL);
1977                         if (ret)
1978                                 dev_info(&pf->pdev->dev,
1979                                          "set unicast promisc failed, err %d, aq_err %d\n",
1980                                          ret, pf->hw.aq.asq_last_status);
1981                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1982                                                           &vsi->back->hw,
1983                                                           vsi->seid,
1984                                                           cur_promisc, NULL);
1985                         if (ret)
1986                                 dev_info(&pf->pdev->dev,
1987                                          "set multicast promisc failed, err %d, aq_err %d\n",
1988                                          ret, pf->hw.aq.asq_last_status);
1989                 }
1990                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1991                                                 vsi->seid,
1992                                                 cur_promisc, NULL);
1993                 if (ret)
1994                         dev_info(&pf->pdev->dev,
1995                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1996                                  i40e_stat_str(&pf->hw, ret),
1997                                  i40e_aq_str(&pf->hw,
1998                                              pf->hw.aq.asq_last_status));
1999         }
2000
2001         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2002         return 0;
2003 }
2004
2005 /**
2006  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2007  * @pf: board private structure
2008  **/
2009 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2010 {
2011         int v;
2012
2013         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2014                 return;
2015         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2016
2017         for (v = 0; v < pf->num_alloc_vsi; v++) {
2018                 if (pf->vsi[v] &&
2019                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2020                         i40e_sync_vsi_filters(pf->vsi[v], true);
2021         }
2022 }
2023
2024 /**
2025  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2026  * @netdev: network interface device structure
2027  * @new_mtu: new value for maximum frame size
2028  *
2029  * Returns 0 on success, negative on failure
2030  **/
2031 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2032 {
2033         struct i40e_netdev_priv *np = netdev_priv(netdev);
2034         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2035         struct i40e_vsi *vsi = np->vsi;
2036
2037         /* MTU < 68 is an error and causes problems on some kernels */
2038         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2039                 return -EINVAL;
2040
2041         netdev_info(netdev, "changing MTU from %d to %d\n",
2042                     netdev->mtu, new_mtu);
2043         netdev->mtu = new_mtu;
2044         if (netif_running(netdev))
2045                 i40e_vsi_reinit_locked(vsi);
2046
2047         return 0;
2048 }
2049
2050 /**
2051  * i40e_ioctl - Access the hwtstamp interface
2052  * @netdev: network interface device structure
2053  * @ifr: interface request data
2054  * @cmd: ioctl command
2055  **/
2056 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2057 {
2058         struct i40e_netdev_priv *np = netdev_priv(netdev);
2059         struct i40e_pf *pf = np->vsi->back;
2060
2061         switch (cmd) {
2062         case SIOCGHWTSTAMP:
2063                 return i40e_ptp_get_ts_config(pf, ifr);
2064         case SIOCSHWTSTAMP:
2065                 return i40e_ptp_set_ts_config(pf, ifr);
2066         default:
2067                 return -EOPNOTSUPP;
2068         }
2069 }
2070
2071 /**
2072  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2073  * @vsi: the vsi being adjusted
2074  **/
2075 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2076 {
2077         struct i40e_vsi_context ctxt;
2078         i40e_status ret;
2079
2080         if ((vsi->info.valid_sections &
2081              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2082             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2083                 return;  /* already enabled */
2084
2085         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2086         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2087                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2088
2089         ctxt.seid = vsi->seid;
2090         ctxt.info = vsi->info;
2091         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2092         if (ret) {
2093                 dev_info(&vsi->back->pdev->dev,
2094                          "update vlan stripping failed, err %s aq_err %s\n",
2095                          i40e_stat_str(&vsi->back->hw, ret),
2096                          i40e_aq_str(&vsi->back->hw,
2097                                      vsi->back->hw.aq.asq_last_status));
2098         }
2099 }
2100
2101 /**
2102  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2103  * @vsi: the vsi being adjusted
2104  **/
2105 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2106 {
2107         struct i40e_vsi_context ctxt;
2108         i40e_status ret;
2109
2110         if ((vsi->info.valid_sections &
2111              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2112             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2113              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2114                 return;  /* already disabled */
2115
2116         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2117         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2118                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2119
2120         ctxt.seid = vsi->seid;
2121         ctxt.info = vsi->info;
2122         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2123         if (ret) {
2124                 dev_info(&vsi->back->pdev->dev,
2125                          "update vlan stripping failed, err %s aq_err %s\n",
2126                          i40e_stat_str(&vsi->back->hw, ret),
2127                          i40e_aq_str(&vsi->back->hw,
2128                                      vsi->back->hw.aq.asq_last_status));
2129         }
2130 }
2131
2132 /**
2133  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2134  * @netdev: network interface to be adjusted
2135  * @features: netdev features to test if VLAN offload is enabled or not
2136  **/
2137 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2138 {
2139         struct i40e_netdev_priv *np = netdev_priv(netdev);
2140         struct i40e_vsi *vsi = np->vsi;
2141
2142         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2143                 i40e_vlan_stripping_enable(vsi);
2144         else
2145                 i40e_vlan_stripping_disable(vsi);
2146 }
2147
2148 /**
2149  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2150  * @vsi: the vsi being configured
2151  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2152  **/
2153 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2154 {
2155         struct i40e_mac_filter *f, *add_f;
2156         bool is_netdev, is_vf;
2157
2158         is_vf = (vsi->type == I40E_VSI_SRIOV);
2159         is_netdev = !!(vsi->netdev);
2160
2161         if (is_netdev) {
2162                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2163                                         is_vf, is_netdev);
2164                 if (!add_f) {
2165                         dev_info(&vsi->back->pdev->dev,
2166                                  "Could not add vlan filter %d for %pM\n",
2167                                  vid, vsi->netdev->dev_addr);
2168                         return -ENOMEM;
2169                 }
2170         }
2171
2172         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2173                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2174                 if (!add_f) {
2175                         dev_info(&vsi->back->pdev->dev,
2176                                  "Could not add vlan filter %d for %pM\n",
2177                                  vid, f->macaddr);
2178                         return -ENOMEM;
2179                 }
2180         }
2181
2182         /* Now if we add a vlan tag, make sure to check if it is the first
2183          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2184          * with 0, so we now accept untagged and specified tagged traffic
2185          * (and not any taged and untagged)
2186          */
2187         if (vid > 0) {
2188                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2189                                                   I40E_VLAN_ANY,
2190                                                   is_vf, is_netdev)) {
2191                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2192                                         I40E_VLAN_ANY, is_vf, is_netdev);
2193                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2194                                                 is_vf, is_netdev);
2195                         if (!add_f) {
2196                                 dev_info(&vsi->back->pdev->dev,
2197                                          "Could not add filter 0 for %pM\n",
2198                                          vsi->netdev->dev_addr);
2199                                 return -ENOMEM;
2200                         }
2201                 }
2202         }
2203
2204         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2205         if (vid > 0 && !vsi->info.pvid) {
2206                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2207                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2208                                              is_vf, is_netdev)) {
2209                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2210                                                 is_vf, is_netdev);
2211                                 add_f = i40e_add_filter(vsi, f->macaddr,
2212                                                         0, is_vf, is_netdev);
2213                                 if (!add_f) {
2214                                         dev_info(&vsi->back->pdev->dev,
2215                                                  "Could not add filter 0 for %pM\n",
2216                                                  f->macaddr);
2217                                         return -ENOMEM;
2218                                 }
2219                         }
2220                 }
2221         }
2222
2223         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2224             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2225                 return 0;
2226
2227         return i40e_sync_vsi_filters(vsi, false);
2228 }
2229
2230 /**
2231  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2232  * @vsi: the vsi being configured
2233  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2234  *
2235  * Return: 0 on success or negative otherwise
2236  **/
2237 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2238 {
2239         struct net_device *netdev = vsi->netdev;
2240         struct i40e_mac_filter *f, *add_f;
2241         bool is_vf, is_netdev;
2242         int filter_count = 0;
2243
2244         is_vf = (vsi->type == I40E_VSI_SRIOV);
2245         is_netdev = !!(netdev);
2246
2247         if (is_netdev)
2248                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2249
2250         list_for_each_entry(f, &vsi->mac_filter_list, list)
2251                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2252
2253         /* go through all the filters for this VSI and if there is only
2254          * vid == 0 it means there are no other filters, so vid 0 must
2255          * be replaced with -1. This signifies that we should from now
2256          * on accept any traffic (with any tag present, or untagged)
2257          */
2258         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2259                 if (is_netdev) {
2260                         if (f->vlan &&
2261                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2262                                 filter_count++;
2263                 }
2264
2265                 if (f->vlan)
2266                         filter_count++;
2267         }
2268
2269         if (!filter_count && is_netdev) {
2270                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2271                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2272                                     is_vf, is_netdev);
2273                 if (!f) {
2274                         dev_info(&vsi->back->pdev->dev,
2275                                  "Could not add filter %d for %pM\n",
2276                                  I40E_VLAN_ANY, netdev->dev_addr);
2277                         return -ENOMEM;
2278                 }
2279         }
2280
2281         if (!filter_count) {
2282                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2283                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2284                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2285                                             is_vf, is_netdev);
2286                         if (!add_f) {
2287                                 dev_info(&vsi->back->pdev->dev,
2288                                          "Could not add filter %d for %pM\n",
2289                                          I40E_VLAN_ANY, f->macaddr);
2290                                 return -ENOMEM;
2291                         }
2292                 }
2293         }
2294
2295         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2296             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2297                 return 0;
2298
2299         return i40e_sync_vsi_filters(vsi, false);
2300 }
2301
2302 /**
2303  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2304  * @netdev: network interface to be adjusted
2305  * @vid: vlan id to be added
2306  *
2307  * net_device_ops implementation for adding vlan ids
2308  **/
2309 #ifdef I40E_FCOE
2310 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2311                          __always_unused __be16 proto, u16 vid)
2312 #else
2313 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2314                                 __always_unused __be16 proto, u16 vid)
2315 #endif
2316 {
2317         struct i40e_netdev_priv *np = netdev_priv(netdev);
2318         struct i40e_vsi *vsi = np->vsi;
2319         int ret = 0;
2320
2321         if (vid > 4095)
2322                 return -EINVAL;
2323
2324         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2325
2326         /* If the network stack called us with vid = 0 then
2327          * it is asking to receive priority tagged packets with
2328          * vlan id 0.  Our HW receives them by default when configured
2329          * to receive untagged packets so there is no need to add an
2330          * extra filter for vlan 0 tagged packets.
2331          */
2332         if (vid)
2333                 ret = i40e_vsi_add_vlan(vsi, vid);
2334
2335         if (!ret && (vid < VLAN_N_VID))
2336                 set_bit(vid, vsi->active_vlans);
2337
2338         return ret;
2339 }
2340
2341 /**
2342  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2343  * @netdev: network interface to be adjusted
2344  * @vid: vlan id to be removed
2345  *
2346  * net_device_ops implementation for removing vlan ids
2347  **/
2348 #ifdef I40E_FCOE
2349 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2350                           __always_unused __be16 proto, u16 vid)
2351 #else
2352 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2353                                  __always_unused __be16 proto, u16 vid)
2354 #endif
2355 {
2356         struct i40e_netdev_priv *np = netdev_priv(netdev);
2357         struct i40e_vsi *vsi = np->vsi;
2358
2359         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2360
2361         /* return code is ignored as there is nothing a user
2362          * can do about failure to remove and a log message was
2363          * already printed from the other function
2364          */
2365         i40e_vsi_kill_vlan(vsi, vid);
2366
2367         clear_bit(vid, vsi->active_vlans);
2368
2369         return 0;
2370 }
2371
2372 /**
2373  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2374  * @vsi: the vsi being brought back up
2375  **/
2376 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2377 {
2378         u16 vid;
2379
2380         if (!vsi->netdev)
2381                 return;
2382
2383         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2384
2385         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2386                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2387                                      vid);
2388 }
2389
2390 /**
2391  * i40e_vsi_add_pvid - Add pvid for the VSI
2392  * @vsi: the vsi being adjusted
2393  * @vid: the vlan id to set as a PVID
2394  **/
2395 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2396 {
2397         struct i40e_vsi_context ctxt;
2398         i40e_status ret;
2399
2400         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2401         vsi->info.pvid = cpu_to_le16(vid);
2402         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2403                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2404                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2405
2406         ctxt.seid = vsi->seid;
2407         ctxt.info = vsi->info;
2408         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2409         if (ret) {
2410                 dev_info(&vsi->back->pdev->dev,
2411                          "add pvid failed, err %s aq_err %s\n",
2412                          i40e_stat_str(&vsi->back->hw, ret),
2413                          i40e_aq_str(&vsi->back->hw,
2414                                      vsi->back->hw.aq.asq_last_status));
2415                 return -ENOENT;
2416         }
2417
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2423  * @vsi: the vsi being adjusted
2424  *
2425  * Just use the vlan_rx_register() service to put it back to normal
2426  **/
2427 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2428 {
2429         i40e_vlan_stripping_disable(vsi);
2430
2431         vsi->info.pvid = 0;
2432 }
2433
2434 /**
2435  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2436  * @vsi: ptr to the VSI
2437  *
2438  * If this function returns with an error, then it's possible one or
2439  * more of the rings is populated (while the rest are not).  It is the
2440  * callers duty to clean those orphaned rings.
2441  *
2442  * Return 0 on success, negative on failure
2443  **/
2444 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2445 {
2446         int i, err = 0;
2447
2448         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2449                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2450
2451         return err;
2452 }
2453
2454 /**
2455  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2456  * @vsi: ptr to the VSI
2457  *
2458  * Free VSI's transmit software resources
2459  **/
2460 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2461 {
2462         int i;
2463
2464         if (!vsi->tx_rings)
2465                 return;
2466
2467         for (i = 0; i < vsi->num_queue_pairs; i++)
2468                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2469                         i40e_free_tx_resources(vsi->tx_rings[i]);
2470 }
2471
2472 /**
2473  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2474  * @vsi: ptr to the VSI
2475  *
2476  * If this function returns with an error, then it's possible one or
2477  * more of the rings is populated (while the rest are not).  It is the
2478  * callers duty to clean those orphaned rings.
2479  *
2480  * Return 0 on success, negative on failure
2481  **/
2482 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2483 {
2484         int i, err = 0;
2485
2486         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2487                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2488 #ifdef I40E_FCOE
2489         i40e_fcoe_setup_ddp_resources(vsi);
2490 #endif
2491         return err;
2492 }
2493
2494 /**
2495  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2496  * @vsi: ptr to the VSI
2497  *
2498  * Free all receive software resources
2499  **/
2500 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2501 {
2502         int i;
2503
2504         if (!vsi->rx_rings)
2505                 return;
2506
2507         for (i = 0; i < vsi->num_queue_pairs; i++)
2508                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2509                         i40e_free_rx_resources(vsi->rx_rings[i]);
2510 #ifdef I40E_FCOE
2511         i40e_fcoe_free_ddp_resources(vsi);
2512 #endif
2513 }
2514
2515 /**
2516  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2517  * @ring: The Tx ring to configure
2518  *
2519  * This enables/disables XPS for a given Tx descriptor ring
2520  * based on the TCs enabled for the VSI that ring belongs to.
2521  **/
2522 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2523 {
2524         struct i40e_vsi *vsi = ring->vsi;
2525         cpumask_var_t mask;
2526
2527         if (!ring->q_vector || !ring->netdev)
2528                 return;
2529
2530         /* Single TC mode enable XPS */
2531         if (vsi->tc_config.numtc <= 1) {
2532                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2533                         netif_set_xps_queue(ring->netdev,
2534                                             &ring->q_vector->affinity_mask,
2535                                             ring->queue_index);
2536         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2537                 /* Disable XPS to allow selection based on TC */
2538                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2539                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2540                 free_cpumask_var(mask);
2541         }
2542 }
2543
2544 /**
2545  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2546  * @ring: The Tx ring to configure
2547  *
2548  * Configure the Tx descriptor ring in the HMC context.
2549  **/
2550 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2551 {
2552         struct i40e_vsi *vsi = ring->vsi;
2553         u16 pf_q = vsi->base_queue + ring->queue_index;
2554         struct i40e_hw *hw = &vsi->back->hw;
2555         struct i40e_hmc_obj_txq tx_ctx;
2556         i40e_status err = 0;
2557         u32 qtx_ctl = 0;
2558
2559         /* some ATR related tx ring init */
2560         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2561                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2562                 ring->atr_count = 0;
2563         } else {
2564                 ring->atr_sample_rate = 0;
2565         }
2566
2567         /* configure XPS */
2568         i40e_config_xps_tx_ring(ring);
2569
2570         /* clear the context structure first */
2571         memset(&tx_ctx, 0, sizeof(tx_ctx));
2572
2573         tx_ctx.new_context = 1;
2574         tx_ctx.base = (ring->dma / 128);
2575         tx_ctx.qlen = ring->count;
2576         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2577                                                I40E_FLAG_FD_ATR_ENABLED));
2578 #ifdef I40E_FCOE
2579         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2580 #endif
2581         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2582         /* FDIR VSI tx ring can still use RS bit and writebacks */
2583         if (vsi->type != I40E_VSI_FDIR)
2584                 tx_ctx.head_wb_ena = 1;
2585         tx_ctx.head_wb_addr = ring->dma +
2586                               (ring->count * sizeof(struct i40e_tx_desc));
2587
2588         /* As part of VSI creation/update, FW allocates certain
2589          * Tx arbitration queue sets for each TC enabled for
2590          * the VSI. The FW returns the handles to these queue
2591          * sets as part of the response buffer to Add VSI,
2592          * Update VSI, etc. AQ commands. It is expected that
2593          * these queue set handles be associated with the Tx
2594          * queues by the driver as part of the TX queue context
2595          * initialization. This has to be done regardless of
2596          * DCB as by default everything is mapped to TC0.
2597          */
2598         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2599         tx_ctx.rdylist_act = 0;
2600
2601         /* clear the context in the HMC */
2602         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2603         if (err) {
2604                 dev_info(&vsi->back->pdev->dev,
2605                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2606                          ring->queue_index, pf_q, err);
2607                 return -ENOMEM;
2608         }
2609
2610         /* set the context in the HMC */
2611         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2612         if (err) {
2613                 dev_info(&vsi->back->pdev->dev,
2614                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2615                          ring->queue_index, pf_q, err);
2616                 return -ENOMEM;
2617         }
2618
2619         /* Now associate this queue with this PCI function */
2620         if (vsi->type == I40E_VSI_VMDQ2) {
2621                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2622                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2623                            I40E_QTX_CTL_VFVM_INDX_MASK;
2624         } else {
2625                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2626         }
2627
2628         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2629                     I40E_QTX_CTL_PF_INDX_MASK);
2630         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2631         i40e_flush(hw);
2632
2633         /* cache tail off for easier writes later */
2634         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2635
2636         return 0;
2637 }
2638
2639 /**
2640  * i40e_configure_rx_ring - Configure a receive ring context
2641  * @ring: The Rx ring to configure
2642  *
2643  * Configure the Rx descriptor ring in the HMC context.
2644  **/
2645 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2646 {
2647         struct i40e_vsi *vsi = ring->vsi;
2648         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2649         u16 pf_q = vsi->base_queue + ring->queue_index;
2650         struct i40e_hw *hw = &vsi->back->hw;
2651         struct i40e_hmc_obj_rxq rx_ctx;
2652         i40e_status err = 0;
2653
2654         ring->state = 0;
2655
2656         /* clear the context structure first */
2657         memset(&rx_ctx, 0, sizeof(rx_ctx));
2658
2659         ring->rx_buf_len = vsi->rx_buf_len;
2660         ring->rx_hdr_len = vsi->rx_hdr_len;
2661
2662         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2663         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2664
2665         rx_ctx.base = (ring->dma / 128);
2666         rx_ctx.qlen = ring->count;
2667
2668         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2669                 set_ring_16byte_desc_enabled(ring);
2670                 rx_ctx.dsize = 0;
2671         } else {
2672                 rx_ctx.dsize = 1;
2673         }
2674
2675         rx_ctx.dtype = vsi->dtype;
2676         if (vsi->dtype) {
2677                 set_ring_ps_enabled(ring);
2678                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2679                                   I40E_RX_SPLIT_IP      |
2680                                   I40E_RX_SPLIT_TCP_UDP |
2681                                   I40E_RX_SPLIT_SCTP;
2682         } else {
2683                 rx_ctx.hsplit_0 = 0;
2684         }
2685
2686         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2687                                   (chain_len * ring->rx_buf_len));
2688         if (hw->revision_id == 0)
2689                 rx_ctx.lrxqthresh = 0;
2690         else
2691                 rx_ctx.lrxqthresh = 2;
2692         rx_ctx.crcstrip = 1;
2693         rx_ctx.l2tsel = 1;
2694         /* this controls whether VLAN is stripped from inner headers */
2695         rx_ctx.showiv = 0;
2696 #ifdef I40E_FCOE
2697         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2698 #endif
2699         /* set the prefena field to 1 because the manual says to */
2700         rx_ctx.prefena = 1;
2701
2702         /* clear the context in the HMC */
2703         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2704         if (err) {
2705                 dev_info(&vsi->back->pdev->dev,
2706                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2707                          ring->queue_index, pf_q, err);
2708                 return -ENOMEM;
2709         }
2710
2711         /* set the context in the HMC */
2712         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2713         if (err) {
2714                 dev_info(&vsi->back->pdev->dev,
2715                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2716                          ring->queue_index, pf_q, err);
2717                 return -ENOMEM;
2718         }
2719
2720         /* cache tail for quicker writes, and clear the reg before use */
2721         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2722         writel(0, ring->tail);
2723
2724         if (ring_is_ps_enabled(ring)) {
2725                 i40e_alloc_rx_headers(ring);
2726                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2727         } else {
2728                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2729         }
2730
2731         return 0;
2732 }
2733
2734 /**
2735  * i40e_vsi_configure_tx - Configure the VSI for Tx
2736  * @vsi: VSI structure describing this set of rings and resources
2737  *
2738  * Configure the Tx VSI for operation.
2739  **/
2740 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2741 {
2742         int err = 0;
2743         u16 i;
2744
2745         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2746                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2747
2748         return err;
2749 }
2750
2751 /**
2752  * i40e_vsi_configure_rx - Configure the VSI for Rx
2753  * @vsi: the VSI being configured
2754  *
2755  * Configure the Rx VSI for operation.
2756  **/
2757 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2758 {
2759         int err = 0;
2760         u16 i;
2761
2762         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2763                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2764                                + ETH_FCS_LEN + VLAN_HLEN;
2765         else
2766                 vsi->max_frame = I40E_RXBUFFER_2048;
2767
2768         /* figure out correct receive buffer length */
2769         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2770                                     I40E_FLAG_RX_PS_ENABLED)) {
2771         case I40E_FLAG_RX_1BUF_ENABLED:
2772                 vsi->rx_hdr_len = 0;
2773                 vsi->rx_buf_len = vsi->max_frame;
2774                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2775                 break;
2776         case I40E_FLAG_RX_PS_ENABLED:
2777                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2778                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2779                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2780                 break;
2781         default:
2782                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2783                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2784                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2785                 break;
2786         }
2787
2788 #ifdef I40E_FCOE
2789         /* setup rx buffer for FCoE */
2790         if ((vsi->type == I40E_VSI_FCOE) &&
2791             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2792                 vsi->rx_hdr_len = 0;
2793                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2794                 vsi->max_frame = I40E_RXBUFFER_3072;
2795                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2796         }
2797
2798 #endif /* I40E_FCOE */
2799         /* round up for the chip's needs */
2800         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2801                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2802         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2803                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2804
2805         /* set up individual rings */
2806         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2807                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2808
2809         return err;
2810 }
2811
2812 /**
2813  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2814  * @vsi: ptr to the VSI
2815  **/
2816 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2817 {
2818         struct i40e_ring *tx_ring, *rx_ring;
2819         u16 qoffset, qcount;
2820         int i, n;
2821
2822         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2823                 /* Reset the TC information */
2824                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2825                         rx_ring = vsi->rx_rings[i];
2826                         tx_ring = vsi->tx_rings[i];
2827                         rx_ring->dcb_tc = 0;
2828                         tx_ring->dcb_tc = 0;
2829                 }
2830         }
2831
2832         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2833                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2834                         continue;
2835
2836                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2837                 qcount = vsi->tc_config.tc_info[n].qcount;
2838                 for (i = qoffset; i < (qoffset + qcount); i++) {
2839                         rx_ring = vsi->rx_rings[i];
2840                         tx_ring = vsi->tx_rings[i];
2841                         rx_ring->dcb_tc = n;
2842                         tx_ring->dcb_tc = n;
2843                 }
2844         }
2845 }
2846
2847 /**
2848  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2849  * @vsi: ptr to the VSI
2850  **/
2851 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2852 {
2853         if (vsi->netdev)
2854                 i40e_set_rx_mode(vsi->netdev);
2855 }
2856
2857 /**
2858  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2859  * @vsi: Pointer to the targeted VSI
2860  *
2861  * This function replays the hlist on the hw where all the SB Flow Director
2862  * filters were saved.
2863  **/
2864 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2865 {
2866         struct i40e_fdir_filter *filter;
2867         struct i40e_pf *pf = vsi->back;
2868         struct hlist_node *node;
2869
2870         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2871                 return;
2872
2873         hlist_for_each_entry_safe(filter, node,
2874                                   &pf->fdir_filter_list, fdir_node) {
2875                 i40e_add_del_fdir(vsi, filter, true);
2876         }
2877 }
2878
2879 /**
2880  * i40e_vsi_configure - Set up the VSI for action
2881  * @vsi: the VSI being configured
2882  **/
2883 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2884 {
2885         int err;
2886
2887         i40e_set_vsi_rx_mode(vsi);
2888         i40e_restore_vlan(vsi);
2889         i40e_vsi_config_dcb_rings(vsi);
2890         err = i40e_vsi_configure_tx(vsi);
2891         if (!err)
2892                 err = i40e_vsi_configure_rx(vsi);
2893
2894         return err;
2895 }
2896
2897 /**
2898  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2899  * @vsi: the VSI being configured
2900  **/
2901 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2902 {
2903         struct i40e_pf *pf = vsi->back;
2904         struct i40e_q_vector *q_vector;
2905         struct i40e_hw *hw = &pf->hw;
2906         u16 vector;
2907         int i, q;
2908         u32 val;
2909         u32 qp;
2910
2911         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2912          * and PFINT_LNKLSTn registers, e.g.:
2913          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2914          */
2915         qp = vsi->base_queue;
2916         vector = vsi->base_vector;
2917         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2918                 q_vector = vsi->q_vectors[i];
2919                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2920                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2921                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2922                      q_vector->rx.itr);
2923                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2924                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2925                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2926                      q_vector->tx.itr);
2927
2928                 /* Linked list for the queuepairs assigned to this vector */
2929                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2930                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2931                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2932                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2933                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2934                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2935                               (I40E_QUEUE_TYPE_TX
2936                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2937
2938                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2939
2940                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2941                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2942                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2943                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2944                               (I40E_QUEUE_TYPE_RX
2945                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2946
2947                         /* Terminate the linked list */
2948                         if (q == (q_vector->num_ringpairs - 1))
2949                                 val |= (I40E_QUEUE_END_OF_LIST
2950                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2951
2952                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2953                         qp++;
2954                 }
2955         }
2956
2957         i40e_flush(hw);
2958 }
2959
2960 /**
2961  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2962  * @hw: ptr to the hardware info
2963  **/
2964 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2965 {
2966         struct i40e_hw *hw = &pf->hw;
2967         u32 val;
2968
2969         /* clear things first */
2970         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2971         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2972
2973         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2974               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2975               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2976               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2977               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2978               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2979               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2980               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2981
2982         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2983                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2984
2985         if (pf->flags & I40E_FLAG_PTP)
2986                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2987
2988         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2989
2990         /* SW_ITR_IDX = 0, but don't change INTENA */
2991         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2992                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2993
2994         /* OTHER_ITR_IDX = 0 */
2995         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2996 }
2997
2998 /**
2999  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3000  * @vsi: the VSI being configured
3001  **/
3002 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3003 {
3004         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3005         struct i40e_pf *pf = vsi->back;
3006         struct i40e_hw *hw = &pf->hw;
3007         u32 val;
3008
3009         /* set the ITR configuration */
3010         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3011         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3012         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3013         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3014         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3015         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3016
3017         i40e_enable_misc_int_causes(pf);
3018
3019         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3020         wr32(hw, I40E_PFINT_LNKLST0, 0);
3021
3022         /* Associate the queue pair to the vector and enable the queue int */
3023         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3024               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3025               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3026
3027         wr32(hw, I40E_QINT_RQCTL(0), val);
3028
3029         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3030               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3031               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3032
3033         wr32(hw, I40E_QINT_TQCTL(0), val);
3034         i40e_flush(hw);
3035 }
3036
3037 /**
3038  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3039  * @pf: board private structure
3040  **/
3041 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3042 {
3043         struct i40e_hw *hw = &pf->hw;
3044
3045         wr32(hw, I40E_PFINT_DYN_CTL0,
3046              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3047         i40e_flush(hw);
3048 }
3049
3050 /**
3051  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3052  * @pf: board private structure
3053  **/
3054 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3055 {
3056         struct i40e_hw *hw = &pf->hw;
3057         u32 val;
3058
3059         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3060               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3061               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3062
3063         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3064         i40e_flush(hw);
3065 }
3066
3067 /**
3068  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3069  * @vsi: pointer to a vsi
3070  * @vector: disable a particular Hw Interrupt vector
3071  **/
3072 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3073 {
3074         struct i40e_pf *pf = vsi->back;
3075         struct i40e_hw *hw = &pf->hw;
3076         u32 val;
3077
3078         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3079         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3080         i40e_flush(hw);
3081 }
3082
3083 /**
3084  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3085  * @irq: interrupt number
3086  * @data: pointer to a q_vector
3087  **/
3088 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3089 {
3090         struct i40e_q_vector *q_vector = data;
3091
3092         if (!q_vector->tx.ring && !q_vector->rx.ring)
3093                 return IRQ_HANDLED;
3094
3095         napi_schedule(&q_vector->napi);
3096
3097         return IRQ_HANDLED;
3098 }
3099
3100 /**
3101  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3102  * @vsi: the VSI being configured
3103  * @basename: name for the vector
3104  *
3105  * Allocates MSI-X vectors and requests interrupts from the kernel.
3106  **/
3107 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3108 {
3109         int q_vectors = vsi->num_q_vectors;
3110         struct i40e_pf *pf = vsi->back;
3111         int base = vsi->base_vector;
3112         int rx_int_idx = 0;
3113         int tx_int_idx = 0;
3114         int vector, err;
3115
3116         for (vector = 0; vector < q_vectors; vector++) {
3117                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3118
3119                 if (q_vector->tx.ring && q_vector->rx.ring) {
3120                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3121                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3122                         tx_int_idx++;
3123                 } else if (q_vector->rx.ring) {
3124                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3125                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3126                 } else if (q_vector->tx.ring) {
3127                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3128                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3129                 } else {
3130                         /* skip this unused q_vector */
3131                         continue;
3132                 }
3133                 err = request_irq(pf->msix_entries[base + vector].vector,
3134                                   vsi->irq_handler,
3135                                   0,
3136                                   q_vector->name,
3137                                   q_vector);
3138                 if (err) {
3139                         dev_info(&pf->pdev->dev,
3140                                  "MSIX request_irq failed, error: %d\n", err);
3141                         goto free_queue_irqs;
3142                 }
3143                 /* assign the mask for this irq */
3144                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3145                                       &q_vector->affinity_mask);
3146         }
3147
3148         vsi->irqs_ready = true;
3149         return 0;
3150
3151 free_queue_irqs:
3152         while (vector) {
3153                 vector--;
3154                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3155                                       NULL);
3156                 free_irq(pf->msix_entries[base + vector].vector,
3157                          &(vsi->q_vectors[vector]));
3158         }
3159         return err;
3160 }
3161
3162 /**
3163  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3164  * @vsi: the VSI being un-configured
3165  **/
3166 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3167 {
3168         struct i40e_pf *pf = vsi->back;
3169         struct i40e_hw *hw = &pf->hw;
3170         int base = vsi->base_vector;
3171         int i;
3172
3173         for (i = 0; i < vsi->num_queue_pairs; i++) {
3174                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3175                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3176         }
3177
3178         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3179                 for (i = vsi->base_vector;
3180                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3181                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3182
3183                 i40e_flush(hw);
3184                 for (i = 0; i < vsi->num_q_vectors; i++)
3185                         synchronize_irq(pf->msix_entries[i + base].vector);
3186         } else {
3187                 /* Legacy and MSI mode - this stops all interrupt handling */
3188                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3189                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3190                 i40e_flush(hw);
3191                 synchronize_irq(pf->pdev->irq);
3192         }
3193 }
3194
3195 /**
3196  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3197  * @vsi: the VSI being configured
3198  **/
3199 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3200 {
3201         struct i40e_pf *pf = vsi->back;
3202         int i;
3203
3204         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3205                 for (i = 0; i < vsi->num_q_vectors; i++)
3206                         i40e_irq_dynamic_enable(vsi, i);
3207         } else {
3208                 i40e_irq_dynamic_enable_icr0(pf);
3209         }
3210
3211         i40e_flush(&pf->hw);
3212         return 0;
3213 }
3214
3215 /**
3216  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3217  * @pf: board private structure
3218  **/
3219 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3220 {
3221         /* Disable ICR 0 */
3222         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3223         i40e_flush(&pf->hw);
3224 }
3225
3226 /**
3227  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3228  * @irq: interrupt number
3229  * @data: pointer to a q_vector
3230  *
3231  * This is the handler used for all MSI/Legacy interrupts, and deals
3232  * with both queue and non-queue interrupts.  This is also used in
3233  * MSIX mode to handle the non-queue interrupts.
3234  **/
3235 static irqreturn_t i40e_intr(int irq, void *data)
3236 {
3237         struct i40e_pf *pf = (struct i40e_pf *)data;
3238         struct i40e_hw *hw = &pf->hw;
3239         irqreturn_t ret = IRQ_NONE;
3240         u32 icr0, icr0_remaining;
3241         u32 val, ena_mask;
3242
3243         icr0 = rd32(hw, I40E_PFINT_ICR0);
3244         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3245
3246         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3247         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3248                 goto enable_intr;
3249
3250         /* if interrupt but no bits showing, must be SWINT */
3251         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3252             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3253                 pf->sw_int_count++;
3254
3255         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3256             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3257                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3258                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3259                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3260         }
3261
3262         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3263         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3264
3265                 /* temporarily disable queue cause for NAPI processing */
3266                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3267
3268                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3269                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3270
3271                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3272                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3273                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3274
3275                 if (!test_bit(__I40E_DOWN, &pf->state))
3276                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3277         }
3278
3279         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3280                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3281                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3282         }
3283
3284         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3285                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3286                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3287         }
3288
3289         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3290                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3291                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3292         }
3293
3294         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3295                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3296                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3297                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3298                 val = rd32(hw, I40E_GLGEN_RSTAT);
3299                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3300                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3301                 if (val == I40E_RESET_CORER) {
3302                         pf->corer_count++;
3303                 } else if (val == I40E_RESET_GLOBR) {
3304                         pf->globr_count++;
3305                 } else if (val == I40E_RESET_EMPR) {
3306                         pf->empr_count++;
3307                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3308                 }
3309         }
3310
3311         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3312                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3313                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3314                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3315                          rd32(hw, I40E_PFHMC_ERRORINFO),
3316                          rd32(hw, I40E_PFHMC_ERRORDATA));
3317         }
3318
3319         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3320                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3321
3322                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3323                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3324                         i40e_ptp_tx_hwtstamp(pf);
3325                 }
3326         }
3327
3328         /* If a critical error is pending we have no choice but to reset the
3329          * device.
3330          * Report and mask out any remaining unexpected interrupts.
3331          */
3332         icr0_remaining = icr0 & ena_mask;
3333         if (icr0_remaining) {
3334                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3335                          icr0_remaining);
3336                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3337                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3338                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3339                         dev_info(&pf->pdev->dev, "device will be reset\n");
3340                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3341                         i40e_service_event_schedule(pf);
3342                 }
3343                 ena_mask &= ~icr0_remaining;
3344         }
3345         ret = IRQ_HANDLED;
3346
3347 enable_intr:
3348         /* re-enable interrupt causes */
3349         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3350         if (!test_bit(__I40E_DOWN, &pf->state)) {
3351                 i40e_service_event_schedule(pf);
3352                 i40e_irq_dynamic_enable_icr0(pf);
3353         }
3354
3355         return ret;
3356 }
3357
3358 /**
3359  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3360  * @tx_ring:  tx ring to clean
3361  * @budget:   how many cleans we're allowed
3362  *
3363  * Returns true if there's any budget left (e.g. the clean is finished)
3364  **/
3365 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3366 {
3367         struct i40e_vsi *vsi = tx_ring->vsi;
3368         u16 i = tx_ring->next_to_clean;
3369         struct i40e_tx_buffer *tx_buf;
3370         struct i40e_tx_desc *tx_desc;
3371
3372         tx_buf = &tx_ring->tx_bi[i];
3373         tx_desc = I40E_TX_DESC(tx_ring, i);
3374         i -= tx_ring->count;
3375
3376         do {
3377                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3378
3379                 /* if next_to_watch is not set then there is no work pending */
3380                 if (!eop_desc)
3381                         break;
3382
3383                 /* prevent any other reads prior to eop_desc */
3384                 read_barrier_depends();
3385
3386                 /* if the descriptor isn't done, no work yet to do */
3387                 if (!(eop_desc->cmd_type_offset_bsz &
3388                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3389                         break;
3390
3391                 /* clear next_to_watch to prevent false hangs */
3392                 tx_buf->next_to_watch = NULL;
3393
3394                 tx_desc->buffer_addr = 0;
3395                 tx_desc->cmd_type_offset_bsz = 0;
3396                 /* move past filter desc */
3397                 tx_buf++;
3398                 tx_desc++;
3399                 i++;
3400                 if (unlikely(!i)) {
3401                         i -= tx_ring->count;
3402                         tx_buf = tx_ring->tx_bi;
3403                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3404                 }
3405                 /* unmap skb header data */
3406                 dma_unmap_single(tx_ring->dev,
3407                                  dma_unmap_addr(tx_buf, dma),
3408                                  dma_unmap_len(tx_buf, len),
3409                                  DMA_TO_DEVICE);
3410                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3411                         kfree(tx_buf->raw_buf);
3412
3413                 tx_buf->raw_buf = NULL;
3414                 tx_buf->tx_flags = 0;
3415                 tx_buf->next_to_watch = NULL;
3416                 dma_unmap_len_set(tx_buf, len, 0);
3417                 tx_desc->buffer_addr = 0;
3418                 tx_desc->cmd_type_offset_bsz = 0;
3419
3420                 /* move us past the eop_desc for start of next FD desc */
3421                 tx_buf++;
3422                 tx_desc++;
3423                 i++;
3424                 if (unlikely(!i)) {
3425                         i -= tx_ring->count;
3426                         tx_buf = tx_ring->tx_bi;
3427                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3428                 }
3429
3430                 /* update budget accounting */
3431                 budget--;
3432         } while (likely(budget));
3433
3434         i += tx_ring->count;
3435         tx_ring->next_to_clean = i;
3436
3437         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3438                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3439
3440         return budget > 0;
3441 }
3442
3443 /**
3444  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3445  * @irq: interrupt number
3446  * @data: pointer to a q_vector
3447  **/
3448 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3449 {
3450         struct i40e_q_vector *q_vector = data;
3451         struct i40e_vsi *vsi;
3452
3453         if (!q_vector->tx.ring)
3454                 return IRQ_HANDLED;
3455
3456         vsi = q_vector->tx.ring->vsi;
3457         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3458
3459         return IRQ_HANDLED;
3460 }
3461
3462 /**
3463  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3464  * @vsi: the VSI being configured
3465  * @v_idx: vector index
3466  * @qp_idx: queue pair index
3467  **/
3468 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3469 {
3470         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3471         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3472         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3473
3474         tx_ring->q_vector = q_vector;
3475         tx_ring->next = q_vector->tx.ring;
3476         q_vector->tx.ring = tx_ring;
3477         q_vector->tx.count++;
3478
3479         rx_ring->q_vector = q_vector;
3480         rx_ring->next = q_vector->rx.ring;
3481         q_vector->rx.ring = rx_ring;
3482         q_vector->rx.count++;
3483 }
3484
3485 /**
3486  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3487  * @vsi: the VSI being configured
3488  *
3489  * This function maps descriptor rings to the queue-specific vectors
3490  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3491  * one vector per queue pair, but on a constrained vector budget, we
3492  * group the queue pairs as "efficiently" as possible.
3493  **/
3494 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3495 {
3496         int qp_remaining = vsi->num_queue_pairs;
3497         int q_vectors = vsi->num_q_vectors;
3498         int num_ringpairs;
3499         int v_start = 0;
3500         int qp_idx = 0;
3501
3502         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3503          * group them so there are multiple queues per vector.
3504          * It is also important to go through all the vectors available to be
3505          * sure that if we don't use all the vectors, that the remaining vectors
3506          * are cleared. This is especially important when decreasing the
3507          * number of queues in use.
3508          */
3509         for (; v_start < q_vectors; v_start++) {
3510                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3511
3512                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3513
3514                 q_vector->num_ringpairs = num_ringpairs;
3515
3516                 q_vector->rx.count = 0;
3517                 q_vector->tx.count = 0;
3518                 q_vector->rx.ring = NULL;
3519                 q_vector->tx.ring = NULL;
3520
3521                 while (num_ringpairs--) {
3522                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3523                         qp_idx++;
3524                         qp_remaining--;
3525                 }
3526         }
3527 }
3528
3529 /**
3530  * i40e_vsi_request_irq - Request IRQ from the OS
3531  * @vsi: the VSI being configured
3532  * @basename: name for the vector
3533  **/
3534 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3535 {
3536         struct i40e_pf *pf = vsi->back;
3537         int err;
3538
3539         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3540                 err = i40e_vsi_request_irq_msix(vsi, basename);
3541         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3542                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3543                                   pf->int_name, pf);
3544         else
3545                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3546                                   pf->int_name, pf);
3547
3548         if (err)
3549                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3550
3551         return err;
3552 }
3553
3554 #ifdef CONFIG_NET_POLL_CONTROLLER
3555 /**
3556  * i40e_netpoll - A Polling 'interrupt'handler
3557  * @netdev: network interface device structure
3558  *
3559  * This is used by netconsole to send skbs without having to re-enable
3560  * interrupts.  It's not called while the normal interrupt routine is executing.
3561  **/
3562 #ifdef I40E_FCOE
3563 void i40e_netpoll(struct net_device *netdev)
3564 #else
3565 static void i40e_netpoll(struct net_device *netdev)
3566 #endif
3567 {
3568         struct i40e_netdev_priv *np = netdev_priv(netdev);
3569         struct i40e_vsi *vsi = np->vsi;
3570         struct i40e_pf *pf = vsi->back;
3571         int i;
3572
3573         /* if interface is down do nothing */
3574         if (test_bit(__I40E_DOWN, &vsi->state))
3575                 return;
3576
3577         pf->flags |= I40E_FLAG_IN_NETPOLL;
3578         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3579                 for (i = 0; i < vsi->num_q_vectors; i++)
3580                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3581         } else {
3582                 i40e_intr(pf->pdev->irq, netdev);
3583         }
3584         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3585 }
3586 #endif
3587
3588 /**
3589  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3590  * @pf: the PF being configured
3591  * @pf_q: the PF queue
3592  * @enable: enable or disable state of the queue
3593  *
3594  * This routine will wait for the given Tx queue of the PF to reach the
3595  * enabled or disabled state.
3596  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3597  * multiple retries; else will return 0 in case of success.
3598  **/
3599 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3600 {
3601         int i;
3602         u32 tx_reg;
3603
3604         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3605                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3606                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3607                         break;
3608
3609                 usleep_range(10, 20);
3610         }
3611         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3612                 return -ETIMEDOUT;
3613
3614         return 0;
3615 }
3616
3617 /**
3618  * i40e_vsi_control_tx - Start or stop a VSI's rings
3619  * @vsi: the VSI being configured
3620  * @enable: start or stop the rings
3621  **/
3622 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3623 {
3624         struct i40e_pf *pf = vsi->back;
3625         struct i40e_hw *hw = &pf->hw;
3626         int i, j, pf_q, ret = 0;
3627         u32 tx_reg;
3628
3629         pf_q = vsi->base_queue;
3630         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3631
3632                 /* warn the TX unit of coming changes */
3633                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3634                 if (!enable)
3635                         usleep_range(10, 20);
3636
3637                 for (j = 0; j < 50; j++) {
3638                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3639                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3640                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3641                                 break;
3642                         usleep_range(1000, 2000);
3643                 }
3644                 /* Skip if the queue is already in the requested state */
3645                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3646                         continue;
3647
3648                 /* turn on/off the queue */
3649                 if (enable) {
3650                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3651                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3652                 } else {
3653                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3654                 }
3655
3656                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3657                 /* No waiting for the Tx queue to disable */
3658                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3659                         continue;
3660
3661                 /* wait for the change to finish */
3662                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3663                 if (ret) {
3664                         dev_info(&pf->pdev->dev,
3665                                  "VSI seid %d Tx ring %d %sable timeout\n",
3666                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3667                         break;
3668                 }
3669         }
3670
3671         if (hw->revision_id == 0)
3672                 mdelay(50);
3673         return ret;
3674 }
3675
3676 /**
3677  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3678  * @pf: the PF being configured
3679  * @pf_q: the PF queue
3680  * @enable: enable or disable state of the queue
3681  *
3682  * This routine will wait for the given Rx queue of the PF to reach the
3683  * enabled or disabled state.
3684  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3685  * multiple retries; else will return 0 in case of success.
3686  **/
3687 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3688 {
3689         int i;
3690         u32 rx_reg;
3691
3692         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3693                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3694                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3695                         break;
3696
3697                 usleep_range(10, 20);
3698         }
3699         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3700                 return -ETIMEDOUT;
3701
3702         return 0;
3703 }
3704
3705 /**
3706  * i40e_vsi_control_rx - Start or stop a VSI's rings
3707  * @vsi: the VSI being configured
3708  * @enable: start or stop the rings
3709  **/
3710 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3711 {
3712         struct i40e_pf *pf = vsi->back;
3713         struct i40e_hw *hw = &pf->hw;
3714         int i, j, pf_q, ret = 0;
3715         u32 rx_reg;
3716
3717         pf_q = vsi->base_queue;
3718         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3719                 for (j = 0; j < 50; j++) {
3720                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3721                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3722                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3723                                 break;
3724                         usleep_range(1000, 2000);
3725                 }
3726
3727                 /* Skip if the queue is already in the requested state */
3728                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3729                         continue;
3730
3731                 /* turn on/off the queue */
3732                 if (enable)
3733                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3734                 else
3735                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3736                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3737
3738                 /* wait for the change to finish */
3739                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3740                 if (ret) {
3741                         dev_info(&pf->pdev->dev,
3742                                  "VSI seid %d Rx ring %d %sable timeout\n",
3743                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3744                         break;
3745                 }
3746         }
3747
3748         return ret;
3749 }
3750
3751 /**
3752  * i40e_vsi_control_rings - Start or stop a VSI's rings
3753  * @vsi: the VSI being configured
3754  * @enable: start or stop the rings
3755  **/
3756 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3757 {
3758         int ret = 0;
3759
3760         /* do rx first for enable and last for disable */
3761         if (request) {
3762                 ret = i40e_vsi_control_rx(vsi, request);
3763                 if (ret)
3764                         return ret;
3765                 ret = i40e_vsi_control_tx(vsi, request);
3766         } else {
3767                 /* Ignore return value, we need to shutdown whatever we can */
3768                 i40e_vsi_control_tx(vsi, request);
3769                 i40e_vsi_control_rx(vsi, request);
3770         }
3771
3772         return ret;
3773 }
3774
3775 /**
3776  * i40e_vsi_free_irq - Free the irq association with the OS
3777  * @vsi: the VSI being configured
3778  **/
3779 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3780 {
3781         struct i40e_pf *pf = vsi->back;
3782         struct i40e_hw *hw = &pf->hw;
3783         int base = vsi->base_vector;
3784         u32 val, qp;
3785         int i;
3786
3787         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3788                 if (!vsi->q_vectors)
3789                         return;
3790
3791                 if (!vsi->irqs_ready)
3792                         return;
3793
3794                 vsi->irqs_ready = false;
3795                 for (i = 0; i < vsi->num_q_vectors; i++) {
3796                         u16 vector = i + base;
3797
3798                         /* free only the irqs that were actually requested */
3799                         if (!vsi->q_vectors[i] ||
3800                             !vsi->q_vectors[i]->num_ringpairs)
3801                                 continue;
3802
3803                         /* clear the affinity_mask in the IRQ descriptor */
3804                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3805                                               NULL);
3806                         free_irq(pf->msix_entries[vector].vector,
3807                                  vsi->q_vectors[i]);
3808
3809                         /* Tear down the interrupt queue link list
3810                          *
3811                          * We know that they come in pairs and always
3812                          * the Rx first, then the Tx.  To clear the
3813                          * link list, stick the EOL value into the
3814                          * next_q field of the registers.
3815                          */
3816                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3817                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3818                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3819                         val |= I40E_QUEUE_END_OF_LIST
3820                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3821                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3822
3823                         while (qp != I40E_QUEUE_END_OF_LIST) {
3824                                 u32 next;
3825
3826                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3827
3828                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3829                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3830                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3831                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3832
3833                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3834                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3835
3836                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3837
3838                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3839
3840                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3841                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3842
3843                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3844                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3845                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3846                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3847
3848                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3849                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3850
3851                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3852                                 qp = next;
3853                         }
3854                 }
3855         } else {
3856                 free_irq(pf->pdev->irq, pf);
3857
3858                 val = rd32(hw, I40E_PFINT_LNKLST0);
3859                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3860                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3861                 val |= I40E_QUEUE_END_OF_LIST
3862                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3863                 wr32(hw, I40E_PFINT_LNKLST0, val);
3864
3865                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3866                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3867                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3868                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3869                          I40E_QINT_RQCTL_INTEVENT_MASK);
3870
3871                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3872                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3873
3874                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3875
3876                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3877
3878                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3879                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3880                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3881                          I40E_QINT_TQCTL_INTEVENT_MASK);
3882
3883                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3884                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3885
3886                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3887         }
3888 }
3889
3890 /**
3891  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3892  * @vsi: the VSI being configured
3893  * @v_idx: Index of vector to be freed
3894  *
3895  * This function frees the memory allocated to the q_vector.  In addition if
3896  * NAPI is enabled it will delete any references to the NAPI struct prior
3897  * to freeing the q_vector.
3898  **/
3899 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3900 {
3901         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3902         struct i40e_ring *ring;
3903
3904         if (!q_vector)
3905                 return;
3906
3907         /* disassociate q_vector from rings */
3908         i40e_for_each_ring(ring, q_vector->tx)
3909                 ring->q_vector = NULL;
3910
3911         i40e_for_each_ring(ring, q_vector->rx)
3912                 ring->q_vector = NULL;
3913
3914         /* only VSI w/ an associated netdev is set up w/ NAPI */
3915         if (vsi->netdev)
3916                 netif_napi_del(&q_vector->napi);
3917
3918         vsi->q_vectors[v_idx] = NULL;
3919
3920         kfree_rcu(q_vector, rcu);
3921 }
3922
3923 /**
3924  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3925  * @vsi: the VSI being un-configured
3926  *
3927  * This frees the memory allocated to the q_vectors and
3928  * deletes references to the NAPI struct.
3929  **/
3930 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3931 {
3932         int v_idx;
3933
3934         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3935                 i40e_free_q_vector(vsi, v_idx);
3936 }
3937
3938 /**
3939  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3940  * @pf: board private structure
3941  **/
3942 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3943 {
3944         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3945         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3946                 pci_disable_msix(pf->pdev);
3947                 kfree(pf->msix_entries);
3948                 pf->msix_entries = NULL;
3949                 kfree(pf->irq_pile);
3950                 pf->irq_pile = NULL;
3951         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3952                 pci_disable_msi(pf->pdev);
3953         }
3954         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3955 }
3956
3957 /**
3958  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3959  * @pf: board private structure
3960  *
3961  * We go through and clear interrupt specific resources and reset the structure
3962  * to pre-load conditions
3963  **/
3964 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3965 {
3966         int i;
3967
3968         i40e_stop_misc_vector(pf);
3969         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3970                 synchronize_irq(pf->msix_entries[0].vector);
3971                 free_irq(pf->msix_entries[0].vector, pf);
3972         }
3973
3974         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3975         for (i = 0; i < pf->num_alloc_vsi; i++)
3976                 if (pf->vsi[i])
3977                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3978         i40e_reset_interrupt_capability(pf);
3979 }
3980
3981 /**
3982  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3983  * @vsi: the VSI being configured
3984  **/
3985 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3986 {
3987         int q_idx;
3988
3989         if (!vsi->netdev)
3990                 return;
3991
3992         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3993                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3994 }
3995
3996 /**
3997  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3998  * @vsi: the VSI being configured
3999  **/
4000 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4001 {
4002         int q_idx;
4003
4004         if (!vsi->netdev)
4005                 return;
4006
4007         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4008                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4009 }
4010
4011 /**
4012  * i40e_vsi_close - Shut down a VSI
4013  * @vsi: the vsi to be quelled
4014  **/
4015 static void i40e_vsi_close(struct i40e_vsi *vsi)
4016 {
4017         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4018                 i40e_down(vsi);
4019         i40e_vsi_free_irq(vsi);
4020         i40e_vsi_free_tx_resources(vsi);
4021         i40e_vsi_free_rx_resources(vsi);
4022         vsi->current_netdev_flags = 0;
4023 }
4024
4025 /**
4026  * i40e_quiesce_vsi - Pause a given VSI
4027  * @vsi: the VSI being paused
4028  **/
4029 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4030 {
4031         if (test_bit(__I40E_DOWN, &vsi->state))
4032                 return;
4033
4034         /* No need to disable FCoE VSI when Tx suspended */
4035         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4036             vsi->type == I40E_VSI_FCOE) {
4037                 dev_dbg(&vsi->back->pdev->dev,
4038                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4039                 return;
4040         }
4041
4042         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4043         if (vsi->netdev && netif_running(vsi->netdev))
4044                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4045         else
4046                 i40e_vsi_close(vsi);
4047 }
4048
4049 /**
4050  * i40e_unquiesce_vsi - Resume a given VSI
4051  * @vsi: the VSI being resumed
4052  **/
4053 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4054 {
4055         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4056                 return;
4057
4058         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4059         if (vsi->netdev && netif_running(vsi->netdev))
4060                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4061         else
4062                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4063 }
4064
4065 /**
4066  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4067  * @pf: the PF
4068  **/
4069 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4070 {
4071         int v;
4072
4073         for (v = 0; v < pf->num_alloc_vsi; v++) {
4074                 if (pf->vsi[v])
4075                         i40e_quiesce_vsi(pf->vsi[v]);
4076         }
4077 }
4078
4079 /**
4080  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4081  * @pf: the PF
4082  **/
4083 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4084 {
4085         int v;
4086
4087         for (v = 0; v < pf->num_alloc_vsi; v++) {
4088                 if (pf->vsi[v])
4089                         i40e_unquiesce_vsi(pf->vsi[v]);
4090         }
4091 }
4092
4093 #ifdef CONFIG_I40E_DCB
4094 /**
4095  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4096  * @vsi: the VSI being configured
4097  *
4098  * This function waits for the given VSI's Tx queues to be disabled.
4099  **/
4100 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4101 {
4102         struct i40e_pf *pf = vsi->back;
4103         int i, pf_q, ret;
4104
4105         pf_q = vsi->base_queue;
4106         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4107                 /* Check and wait for the disable status of the queue */
4108                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4109                 if (ret) {
4110                         dev_info(&pf->pdev->dev,
4111                                  "VSI seid %d Tx ring %d disable timeout\n",
4112                                  vsi->seid, pf_q);
4113                         return ret;
4114                 }
4115         }
4116
4117         return 0;
4118 }
4119
4120 /**
4121  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4122  * @pf: the PF
4123  *
4124  * This function waits for the Tx queues to be in disabled state for all the
4125  * VSIs that are managed by this PF.
4126  **/
4127 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4128 {
4129         int v, ret = 0;
4130
4131         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4132                 /* No need to wait for FCoE VSI queues */
4133                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4134                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4135                         if (ret)
4136                                 break;
4137                 }
4138         }
4139
4140         return ret;
4141 }
4142
4143 #endif
4144
4145 /**
4146  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4147  * @q_idx: TX queue number
4148  * @vsi: Pointer to VSI struct
4149  *
4150  * This function checks specified queue for given VSI. Detects hung condition.
4151  * Sets hung bit since it is two step process. Before next run of service task
4152  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4153  * hung condition remain unchanged and during subsequent run, this function
4154  * issues SW interrupt to recover from hung condition.
4155  **/
4156 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4157 {
4158         struct i40e_ring *tx_ring = NULL;
4159         struct i40e_pf  *pf;
4160         u32 head, val, tx_pending;
4161         int i;
4162
4163         pf = vsi->back;
4164
4165         /* now that we have an index, find the tx_ring struct */
4166         for (i = 0; i < vsi->num_queue_pairs; i++) {
4167                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4168                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4169                                 tx_ring = vsi->tx_rings[i];
4170                                 break;
4171                         }
4172                 }
4173         }
4174
4175         if (!tx_ring)
4176                 return;
4177
4178         /* Read interrupt register */
4179         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4180                 val = rd32(&pf->hw,
4181                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4182                                                tx_ring->vsi->base_vector - 1));
4183         else
4184                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4185
4186         head = i40e_get_head(tx_ring);
4187
4188         tx_pending = i40e_get_tx_pending(tx_ring);
4189
4190         /* Interrupts are disabled and TX pending is non-zero,
4191          * trigger the SW interrupt (don't wait). Worst case
4192          * there will be one extra interrupt which may result
4193          * into not cleaning any queues because queues are cleaned.
4194          */
4195         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4196                 i40e_force_wb(vsi, tx_ring->q_vector);
4197 }
4198
4199 /**
4200  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4201  * @pf:  pointer to PF struct
4202  *
4203  * LAN VSI has netdev and netdev has TX queues. This function is to check
4204  * each of those TX queues if they are hung, trigger recovery by issuing
4205  * SW interrupt.
4206  **/
4207 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4208 {
4209         struct net_device *netdev;
4210         struct i40e_vsi *vsi;
4211         int i;
4212
4213         /* Only for LAN VSI */
4214         vsi = pf->vsi[pf->lan_vsi];
4215
4216         if (!vsi)
4217                 return;
4218
4219         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4220         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4221             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4222                 return;
4223
4224         /* Make sure type is MAIN VSI */
4225         if (vsi->type != I40E_VSI_MAIN)
4226                 return;
4227
4228         netdev = vsi->netdev;
4229         if (!netdev)
4230                 return;
4231
4232         /* Bail out if netif_carrier is not OK */
4233         if (!netif_carrier_ok(netdev))
4234                 return;
4235
4236         /* Go thru' TX queues for netdev */
4237         for (i = 0; i < netdev->num_tx_queues; i++) {
4238                 struct netdev_queue *q;
4239
4240                 q = netdev_get_tx_queue(netdev, i);
4241                 if (q)
4242                         i40e_detect_recover_hung_queue(i, vsi);
4243         }
4244 }
4245
4246 /**
4247  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4248  * @pf: pointer to PF
4249  *
4250  * Get TC map for ISCSI PF type that will include iSCSI TC
4251  * and LAN TC.
4252  **/
4253 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4254 {
4255         struct i40e_dcb_app_priority_table app;
4256         struct i40e_hw *hw = &pf->hw;
4257         u8 enabled_tc = 1; /* TC0 is always enabled */
4258         u8 tc, i;
4259         /* Get the iSCSI APP TLV */
4260         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4261
4262         for (i = 0; i < dcbcfg->numapps; i++) {
4263                 app = dcbcfg->app[i];
4264                 if (app.selector == I40E_APP_SEL_TCPIP &&
4265                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4266                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4267                         enabled_tc |= BIT_ULL(tc);
4268                         break;
4269                 }
4270         }
4271
4272         return enabled_tc;
4273 }
4274
4275 /**
4276  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4277  * @dcbcfg: the corresponding DCBx configuration structure
4278  *
4279  * Return the number of TCs from given DCBx configuration
4280  **/
4281 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4282 {
4283         u8 num_tc = 0;
4284         int i;
4285
4286         /* Scan the ETS Config Priority Table to find
4287          * traffic class enabled for a given priority
4288          * and use the traffic class index to get the
4289          * number of traffic classes enabled
4290          */
4291         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4292                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4293                         num_tc = dcbcfg->etscfg.prioritytable[i];
4294         }
4295
4296         /* Traffic class index starts from zero so
4297          * increment to return the actual count
4298          */
4299         return num_tc + 1;
4300 }
4301
4302 /**
4303  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4304  * @dcbcfg: the corresponding DCBx configuration structure
4305  *
4306  * Query the current DCB configuration and return the number of
4307  * traffic classes enabled from the given DCBX config
4308  **/
4309 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4310 {
4311         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4312         u8 enabled_tc = 1;
4313         u8 i;
4314
4315         for (i = 0; i < num_tc; i++)
4316                 enabled_tc |= BIT(i);
4317
4318         return enabled_tc;
4319 }
4320
4321 /**
4322  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4323  * @pf: PF being queried
4324  *
4325  * Return number of traffic classes enabled for the given PF
4326  **/
4327 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4328 {
4329         struct i40e_hw *hw = &pf->hw;
4330         u8 i, enabled_tc;
4331         u8 num_tc = 0;
4332         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4333
4334         /* If DCB is not enabled then always in single TC */
4335         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4336                 return 1;
4337
4338         /* SFP mode will be enabled for all TCs on port */
4339         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4340                 return i40e_dcb_get_num_tc(dcbcfg);
4341
4342         /* MFP mode return count of enabled TCs for this PF */
4343         if (pf->hw.func_caps.iscsi)
4344                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4345         else
4346                 return 1; /* Only TC0 */
4347
4348         /* At least have TC0 */
4349         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4350         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4351                 if (enabled_tc & BIT_ULL(i))
4352                         num_tc++;
4353         }
4354         return num_tc;
4355 }
4356
4357 /**
4358  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4359  * @pf: PF being queried
4360  *
4361  * Return a bitmap for first enabled traffic class for this PF.
4362  **/
4363 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4364 {
4365         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4366         u8 i = 0;
4367
4368         if (!enabled_tc)
4369                 return 0x1; /* TC0 */
4370
4371         /* Find the first enabled TC */
4372         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4373                 if (enabled_tc & BIT_ULL(i))
4374                         break;
4375         }
4376
4377         return BIT(i);
4378 }
4379
4380 /**
4381  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4382  * @pf: PF being queried
4383  *
4384  * Return a bitmap for enabled traffic classes for this PF.
4385  **/
4386 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4387 {
4388         /* If DCB is not enabled for this PF then just return default TC */
4389         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4390                 return i40e_pf_get_default_tc(pf);
4391
4392         /* SFP mode we want PF to be enabled for all TCs */
4393         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4394                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4395
4396         /* MFP enabled and iSCSI PF type */
4397         if (pf->hw.func_caps.iscsi)
4398                 return i40e_get_iscsi_tc_map(pf);
4399         else
4400                 return i40e_pf_get_default_tc(pf);
4401 }
4402
4403 /**
4404  * i40e_vsi_get_bw_info - Query VSI BW Information
4405  * @vsi: the VSI being queried
4406  *
4407  * Returns 0 on success, negative value on failure
4408  **/
4409 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4410 {
4411         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4412         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4413         struct i40e_pf *pf = vsi->back;
4414         struct i40e_hw *hw = &pf->hw;
4415         i40e_status ret;
4416         u32 tc_bw_max;
4417         int i;
4418
4419         /* Get the VSI level BW configuration */
4420         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4421         if (ret) {
4422                 dev_info(&pf->pdev->dev,
4423                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4424                          i40e_stat_str(&pf->hw, ret),
4425                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4426                 return -EINVAL;
4427         }
4428
4429         /* Get the VSI level BW configuration per TC */
4430         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4431                                                NULL);
4432         if (ret) {
4433                 dev_info(&pf->pdev->dev,
4434                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4435                          i40e_stat_str(&pf->hw, ret),
4436                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4437                 return -EINVAL;
4438         }
4439
4440         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4441                 dev_info(&pf->pdev->dev,
4442                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4443                          bw_config.tc_valid_bits,
4444                          bw_ets_config.tc_valid_bits);
4445                 /* Still continuing */
4446         }
4447
4448         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4449         vsi->bw_max_quanta = bw_config.max_bw;
4450         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4451                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4452         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4453                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4454                 vsi->bw_ets_limit_credits[i] =
4455                                         le16_to_cpu(bw_ets_config.credits[i]);
4456                 /* 3 bits out of 4 for each TC */
4457                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4458         }
4459
4460         return 0;
4461 }
4462
4463 /**
4464  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4465  * @vsi: the VSI being configured
4466  * @enabled_tc: TC bitmap
4467  * @bw_credits: BW shared credits per TC
4468  *
4469  * Returns 0 on success, negative value on failure
4470  **/
4471 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4472                                        u8 *bw_share)
4473 {
4474         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4475         i40e_status ret;
4476         int i;
4477
4478         bw_data.tc_valid_bits = enabled_tc;
4479         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4480                 bw_data.tc_bw_credits[i] = bw_share[i];
4481
4482         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4483                                        NULL);
4484         if (ret) {
4485                 dev_info(&vsi->back->pdev->dev,
4486                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4487                          vsi->back->hw.aq.asq_last_status);
4488                 return -EINVAL;
4489         }
4490
4491         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4492                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4493
4494         return 0;
4495 }
4496
4497 /**
4498  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4499  * @vsi: the VSI being configured
4500  * @enabled_tc: TC map to be enabled
4501  *
4502  **/
4503 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4504 {
4505         struct net_device *netdev = vsi->netdev;
4506         struct i40e_pf *pf = vsi->back;
4507         struct i40e_hw *hw = &pf->hw;
4508         u8 netdev_tc = 0;
4509         int i;
4510         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4511
4512         if (!netdev)
4513                 return;
4514
4515         if (!enabled_tc) {
4516                 netdev_reset_tc(netdev);
4517                 return;
4518         }
4519
4520         /* Set up actual enabled TCs on the VSI */
4521         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4522                 return;
4523
4524         /* set per TC queues for the VSI */
4525         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4526                 /* Only set TC queues for enabled tcs
4527                  *
4528                  * e.g. For a VSI that has TC0 and TC3 enabled the
4529                  * enabled_tc bitmap would be 0x00001001; the driver
4530                  * will set the numtc for netdev as 2 that will be
4531                  * referenced by the netdev layer as TC 0 and 1.
4532                  */
4533                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4534                         netdev_set_tc_queue(netdev,
4535                                         vsi->tc_config.tc_info[i].netdev_tc,
4536                                         vsi->tc_config.tc_info[i].qcount,
4537                                         vsi->tc_config.tc_info[i].qoffset);
4538         }
4539
4540         /* Assign UP2TC map for the VSI */
4541         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4542                 /* Get the actual TC# for the UP */
4543                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4544                 /* Get the mapped netdev TC# for the UP */
4545                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4546                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4547         }
4548 }
4549
4550 /**
4551  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4552  * @vsi: the VSI being configured
4553  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4554  **/
4555 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4556                                       struct i40e_vsi_context *ctxt)
4557 {
4558         /* copy just the sections touched not the entire info
4559          * since not all sections are valid as returned by
4560          * update vsi params
4561          */
4562         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4563         memcpy(&vsi->info.queue_mapping,
4564                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4565         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4566                sizeof(vsi->info.tc_mapping));
4567 }
4568
4569 /**
4570  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4571  * @vsi: VSI to be configured
4572  * @enabled_tc: TC bitmap
4573  *
4574  * This configures a particular VSI for TCs that are mapped to the
4575  * given TC bitmap. It uses default bandwidth share for TCs across
4576  * VSIs to configure TC for a particular VSI.
4577  *
4578  * NOTE:
4579  * It is expected that the VSI queues have been quisced before calling
4580  * this function.
4581  **/
4582 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4583 {
4584         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4585         struct i40e_vsi_context ctxt;
4586         int ret = 0;
4587         int i;
4588
4589         /* Check if enabled_tc is same as existing or new TCs */
4590         if (vsi->tc_config.enabled_tc == enabled_tc)
4591                 return ret;
4592
4593         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4594         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4595                 if (enabled_tc & BIT_ULL(i))
4596                         bw_share[i] = 1;
4597         }
4598
4599         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4600         if (ret) {
4601                 dev_info(&vsi->back->pdev->dev,
4602                          "Failed configuring TC map %d for VSI %d\n",
4603                          enabled_tc, vsi->seid);
4604                 goto out;
4605         }
4606
4607         /* Update Queue Pairs Mapping for currently enabled UPs */
4608         ctxt.seid = vsi->seid;
4609         ctxt.pf_num = vsi->back->hw.pf_id;
4610         ctxt.vf_num = 0;
4611         ctxt.uplink_seid = vsi->uplink_seid;
4612         ctxt.info = vsi->info;
4613         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4614
4615         /* Update the VSI after updating the VSI queue-mapping information */
4616         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4617         if (ret) {
4618                 dev_info(&vsi->back->pdev->dev,
4619                          "Update vsi tc config failed, err %s aq_err %s\n",
4620                          i40e_stat_str(&vsi->back->hw, ret),
4621                          i40e_aq_str(&vsi->back->hw,
4622                                      vsi->back->hw.aq.asq_last_status));
4623                 goto out;
4624         }
4625         /* update the local VSI info with updated queue map */
4626         i40e_vsi_update_queue_map(vsi, &ctxt);
4627         vsi->info.valid_sections = 0;
4628
4629         /* Update current VSI BW information */
4630         ret = i40e_vsi_get_bw_info(vsi);
4631         if (ret) {
4632                 dev_info(&vsi->back->pdev->dev,
4633                          "Failed updating vsi bw info, err %s aq_err %s\n",
4634                          i40e_stat_str(&vsi->back->hw, ret),
4635                          i40e_aq_str(&vsi->back->hw,
4636                                      vsi->back->hw.aq.asq_last_status));
4637                 goto out;
4638         }
4639
4640         /* Update the netdev TC setup */
4641         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4642 out:
4643         return ret;
4644 }
4645
4646 /**
4647  * i40e_veb_config_tc - Configure TCs for given VEB
4648  * @veb: given VEB
4649  * @enabled_tc: TC bitmap
4650  *
4651  * Configures given TC bitmap for VEB (switching) element
4652  **/
4653 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4654 {
4655         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4656         struct i40e_pf *pf = veb->pf;
4657         int ret = 0;
4658         int i;
4659
4660         /* No TCs or already enabled TCs just return */
4661         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4662                 return ret;
4663
4664         bw_data.tc_valid_bits = enabled_tc;
4665         /* bw_data.absolute_credits is not set (relative) */
4666
4667         /* Enable ETS TCs with equal BW Share for now */
4668         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4669                 if (enabled_tc & BIT_ULL(i))
4670                         bw_data.tc_bw_share_credits[i] = 1;
4671         }
4672
4673         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4674                                                    &bw_data, NULL);
4675         if (ret) {
4676                 dev_info(&pf->pdev->dev,
4677                          "VEB bw config failed, err %s aq_err %s\n",
4678                          i40e_stat_str(&pf->hw, ret),
4679                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4680                 goto out;
4681         }
4682
4683         /* Update the BW information */
4684         ret = i40e_veb_get_bw_info(veb);
4685         if (ret) {
4686                 dev_info(&pf->pdev->dev,
4687                          "Failed getting veb bw config, err %s aq_err %s\n",
4688                          i40e_stat_str(&pf->hw, ret),
4689                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4690         }
4691
4692 out:
4693         return ret;
4694 }
4695
4696 #ifdef CONFIG_I40E_DCB
4697 /**
4698  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4699  * @pf: PF struct
4700  *
4701  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4702  * the caller would've quiesce all the VSIs before calling
4703  * this function
4704  **/
4705 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4706 {
4707         u8 tc_map = 0;
4708         int ret;
4709         u8 v;
4710
4711         /* Enable the TCs available on PF to all VEBs */
4712         tc_map = i40e_pf_get_tc_map(pf);
4713         for (v = 0; v < I40E_MAX_VEB; v++) {
4714                 if (!pf->veb[v])
4715                         continue;
4716                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4717                 if (ret) {
4718                         dev_info(&pf->pdev->dev,
4719                                  "Failed configuring TC for VEB seid=%d\n",
4720                                  pf->veb[v]->seid);
4721                         /* Will try to configure as many components */
4722                 }
4723         }
4724
4725         /* Update each VSI */
4726         for (v = 0; v < pf->num_alloc_vsi; v++) {
4727                 if (!pf->vsi[v])
4728                         continue;
4729
4730                 /* - Enable all TCs for the LAN VSI
4731 #ifdef I40E_FCOE
4732                  * - For FCoE VSI only enable the TC configured
4733                  *   as per the APP TLV
4734 #endif
4735                  * - For all others keep them at TC0 for now
4736                  */
4737                 if (v == pf->lan_vsi)
4738                         tc_map = i40e_pf_get_tc_map(pf);
4739                 else
4740                         tc_map = i40e_pf_get_default_tc(pf);
4741 #ifdef I40E_FCOE
4742                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4743                         tc_map = i40e_get_fcoe_tc_map(pf);
4744 #endif /* #ifdef I40E_FCOE */
4745
4746                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4747                 if (ret) {
4748                         dev_info(&pf->pdev->dev,
4749                                  "Failed configuring TC for VSI seid=%d\n",
4750                                  pf->vsi[v]->seid);
4751                         /* Will try to configure as many components */
4752                 } else {
4753                         /* Re-configure VSI vectors based on updated TC map */
4754                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4755                         if (pf->vsi[v]->netdev)
4756                                 i40e_dcbnl_set_all(pf->vsi[v]);
4757                 }
4758         }
4759 }
4760
4761 /**
4762  * i40e_resume_port_tx - Resume port Tx
4763  * @pf: PF struct
4764  *
4765  * Resume a port's Tx and issue a PF reset in case of failure to
4766  * resume.
4767  **/
4768 static int i40e_resume_port_tx(struct i40e_pf *pf)
4769 {
4770         struct i40e_hw *hw = &pf->hw;
4771         int ret;
4772
4773         ret = i40e_aq_resume_port_tx(hw, NULL);
4774         if (ret) {
4775                 dev_info(&pf->pdev->dev,
4776                          "Resume Port Tx failed, err %s aq_err %s\n",
4777                           i40e_stat_str(&pf->hw, ret),
4778                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4779                 /* Schedule PF reset to recover */
4780                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4781                 i40e_service_event_schedule(pf);
4782         }
4783
4784         return ret;
4785 }
4786
4787 /**
4788  * i40e_init_pf_dcb - Initialize DCB configuration
4789  * @pf: PF being configured
4790  *
4791  * Query the current DCB configuration and cache it
4792  * in the hardware structure
4793  **/
4794 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4795 {
4796         struct i40e_hw *hw = &pf->hw;
4797         int err = 0;
4798
4799         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4800         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4801             (pf->hw.aq.fw_maj_ver < 4))
4802                 goto out;
4803
4804         /* Get the initial DCB configuration */
4805         err = i40e_init_dcb(hw);
4806         if (!err) {
4807                 /* Device/Function is not DCBX capable */
4808                 if ((!hw->func_caps.dcb) ||
4809                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4810                         dev_info(&pf->pdev->dev,
4811                                  "DCBX offload is not supported or is disabled for this PF.\n");
4812
4813                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4814                                 goto out;
4815
4816                 } else {
4817                         /* When status is not DISABLED then DCBX in FW */
4818                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4819                                        DCB_CAP_DCBX_VER_IEEE;
4820
4821                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4822                         /* Enable DCB tagging only when more than one TC */
4823                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4824                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4825                         dev_dbg(&pf->pdev->dev,
4826                                 "DCBX offload is supported for this PF.\n");
4827                 }
4828         } else {
4829                 dev_info(&pf->pdev->dev,
4830                          "Query for DCB configuration failed, err %s aq_err %s\n",
4831                          i40e_stat_str(&pf->hw, err),
4832                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4833         }
4834
4835 out:
4836         return err;
4837 }
4838 #endif /* CONFIG_I40E_DCB */
4839 #define SPEED_SIZE 14
4840 #define FC_SIZE 8
4841 /**
4842  * i40e_print_link_message - print link up or down
4843  * @vsi: the VSI for which link needs a message
4844  */
4845 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4846 {
4847         char *speed = "Unknown";
4848         char *fc = "Unknown";
4849
4850         if (vsi->current_isup == isup)
4851                 return;
4852         vsi->current_isup = isup;
4853         if (!isup) {
4854                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4855                 return;
4856         }
4857
4858         /* Warn user if link speed on NPAR enabled partition is not at
4859          * least 10GB
4860          */
4861         if (vsi->back->hw.func_caps.npar_enable &&
4862             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4863              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4864                 netdev_warn(vsi->netdev,
4865                             "The partition detected link speed that is less than 10Gbps\n");
4866
4867         switch (vsi->back->hw.phy.link_info.link_speed) {
4868         case I40E_LINK_SPEED_40GB:
4869                 speed = "40 G";
4870                 break;
4871         case I40E_LINK_SPEED_20GB:
4872                 speed = "20 G";
4873                 break;
4874         case I40E_LINK_SPEED_10GB:
4875                 speed = "10 G";
4876                 break;
4877         case I40E_LINK_SPEED_1GB:
4878                 speed = "1000 M";
4879                 break;
4880         case I40E_LINK_SPEED_100MB:
4881                 speed = "100 M";
4882                 break;
4883         default:
4884                 break;
4885         }
4886
4887         switch (vsi->back->hw.fc.current_mode) {
4888         case I40E_FC_FULL:
4889                 fc = "RX/TX";
4890                 break;
4891         case I40E_FC_TX_PAUSE:
4892                 fc = "TX";
4893                 break;
4894         case I40E_FC_RX_PAUSE:
4895                 fc = "RX";
4896                 break;
4897         default:
4898                 fc = "None";
4899                 break;
4900         }
4901
4902         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
4903                     speed, fc);
4904 }
4905
4906 /**
4907  * i40e_up_complete - Finish the last steps of bringing up a connection
4908  * @vsi: the VSI being configured
4909  **/
4910 static int i40e_up_complete(struct i40e_vsi *vsi)
4911 {
4912         struct i40e_pf *pf = vsi->back;
4913         int err;
4914
4915         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4916                 i40e_vsi_configure_msix(vsi);
4917         else
4918                 i40e_configure_msi_and_legacy(vsi);
4919
4920         /* start rings */
4921         err = i40e_vsi_control_rings(vsi, true);
4922         if (err)
4923                 return err;
4924
4925         clear_bit(__I40E_DOWN, &vsi->state);
4926         i40e_napi_enable_all(vsi);
4927         i40e_vsi_enable_irq(vsi);
4928
4929         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4930             (vsi->netdev)) {
4931                 i40e_print_link_message(vsi, true);
4932                 netif_tx_start_all_queues(vsi->netdev);
4933                 netif_carrier_on(vsi->netdev);
4934         } else if (vsi->netdev) {
4935                 i40e_print_link_message(vsi, false);
4936                 /* need to check for qualified module here*/
4937                 if ((pf->hw.phy.link_info.link_info &
4938                         I40E_AQ_MEDIA_AVAILABLE) &&
4939                     (!(pf->hw.phy.link_info.an_info &
4940                         I40E_AQ_QUALIFIED_MODULE)))
4941                         netdev_err(vsi->netdev,
4942                                    "the driver failed to link because an unqualified module was detected.");
4943         }
4944
4945         /* replay FDIR SB filters */
4946         if (vsi->type == I40E_VSI_FDIR) {
4947                 /* reset fd counters */
4948                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4949                 if (pf->fd_tcp_rule > 0) {
4950                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4951                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4952                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4953                         pf->fd_tcp_rule = 0;
4954                 }
4955                 i40e_fdir_filter_restore(vsi);
4956         }
4957         i40e_service_event_schedule(pf);
4958
4959         return 0;
4960 }
4961
4962 /**
4963  * i40e_vsi_reinit_locked - Reset the VSI
4964  * @vsi: the VSI being configured
4965  *
4966  * Rebuild the ring structs after some configuration
4967  * has changed, e.g. MTU size.
4968  **/
4969 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4970 {
4971         struct i40e_pf *pf = vsi->back;
4972
4973         WARN_ON(in_interrupt());
4974         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4975                 usleep_range(1000, 2000);
4976         i40e_down(vsi);
4977
4978         /* Give a VF some time to respond to the reset.  The
4979          * two second wait is based upon the watchdog cycle in
4980          * the VF driver.
4981          */
4982         if (vsi->type == I40E_VSI_SRIOV)
4983                 msleep(2000);
4984         i40e_up(vsi);
4985         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4986 }
4987
4988 /**
4989  * i40e_up - Bring the connection back up after being down
4990  * @vsi: the VSI being configured
4991  **/
4992 int i40e_up(struct i40e_vsi *vsi)
4993 {
4994         int err;
4995
4996         err = i40e_vsi_configure(vsi);
4997         if (!err)
4998                 err = i40e_up_complete(vsi);
4999
5000         return err;
5001 }
5002
5003 /**
5004  * i40e_down - Shutdown the connection processing
5005  * @vsi: the VSI being stopped
5006  **/
5007 void i40e_down(struct i40e_vsi *vsi)
5008 {
5009         int i;
5010
5011         /* It is assumed that the caller of this function
5012          * sets the vsi->state __I40E_DOWN bit.
5013          */
5014         if (vsi->netdev) {
5015                 netif_carrier_off(vsi->netdev);
5016                 netif_tx_disable(vsi->netdev);
5017         }
5018         i40e_vsi_disable_irq(vsi);
5019         i40e_vsi_control_rings(vsi, false);
5020         i40e_napi_disable_all(vsi);
5021
5022         for (i = 0; i < vsi->num_queue_pairs; i++) {
5023                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5024                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5025         }
5026 }
5027
5028 /**
5029  * i40e_setup_tc - configure multiple traffic classes
5030  * @netdev: net device to configure
5031  * @tc: number of traffic classes to enable
5032  **/
5033 #ifdef I40E_FCOE
5034 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5035 #else
5036 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5037 #endif
5038 {
5039         struct i40e_netdev_priv *np = netdev_priv(netdev);
5040         struct i40e_vsi *vsi = np->vsi;
5041         struct i40e_pf *pf = vsi->back;
5042         u8 enabled_tc = 0;
5043         int ret = -EINVAL;
5044         int i;
5045
5046         /* Check if DCB enabled to continue */
5047         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5048                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5049                 goto exit;
5050         }
5051
5052         /* Check if MFP enabled */
5053         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5054                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5055                 goto exit;
5056         }
5057
5058         /* Check whether tc count is within enabled limit */
5059         if (tc > i40e_pf_get_num_tc(pf)) {
5060                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5061                 goto exit;
5062         }
5063
5064         /* Generate TC map for number of tc requested */
5065         for (i = 0; i < tc; i++)
5066                 enabled_tc |= BIT_ULL(i);
5067
5068         /* Requesting same TC configuration as already enabled */
5069         if (enabled_tc == vsi->tc_config.enabled_tc)
5070                 return 0;
5071
5072         /* Quiesce VSI queues */
5073         i40e_quiesce_vsi(vsi);
5074
5075         /* Configure VSI for enabled TCs */
5076         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5077         if (ret) {
5078                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5079                             vsi->seid);
5080                 goto exit;
5081         }
5082
5083         /* Unquiesce VSI */
5084         i40e_unquiesce_vsi(vsi);
5085
5086 exit:
5087         return ret;
5088 }
5089
5090 /**
5091  * i40e_open - Called when a network interface is made active
5092  * @netdev: network interface device structure
5093  *
5094  * The open entry point is called when a network interface is made
5095  * active by the system (IFF_UP).  At this point all resources needed
5096  * for transmit and receive operations are allocated, the interrupt
5097  * handler is registered with the OS, the netdev watchdog subtask is
5098  * enabled, and the stack is notified that the interface is ready.
5099  *
5100  * Returns 0 on success, negative value on failure
5101  **/
5102 int i40e_open(struct net_device *netdev)
5103 {
5104         struct i40e_netdev_priv *np = netdev_priv(netdev);
5105         struct i40e_vsi *vsi = np->vsi;
5106         struct i40e_pf *pf = vsi->back;
5107         int err;
5108
5109         /* disallow open during test or if eeprom is broken */
5110         if (test_bit(__I40E_TESTING, &pf->state) ||
5111             test_bit(__I40E_BAD_EEPROM, &pf->state))
5112                 return -EBUSY;
5113
5114         netif_carrier_off(netdev);
5115
5116         err = i40e_vsi_open(vsi);
5117         if (err)
5118                 return err;
5119
5120         /* configure global TSO hardware offload settings */
5121         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5122                                                        TCP_FLAG_FIN) >> 16);
5123         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5124                                                        TCP_FLAG_FIN |
5125                                                        TCP_FLAG_CWR) >> 16);
5126         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5127
5128 #ifdef CONFIG_I40E_VXLAN
5129         vxlan_get_rx_port(netdev);
5130 #endif
5131
5132         return 0;
5133 }
5134
5135 /**
5136  * i40e_vsi_open -
5137  * @vsi: the VSI to open
5138  *
5139  * Finish initialization of the VSI.
5140  *
5141  * Returns 0 on success, negative value on failure
5142  **/
5143 int i40e_vsi_open(struct i40e_vsi *vsi)
5144 {
5145         struct i40e_pf *pf = vsi->back;
5146         char int_name[I40E_INT_NAME_STR_LEN];
5147         int err;
5148
5149         /* allocate descriptors */
5150         err = i40e_vsi_setup_tx_resources(vsi);
5151         if (err)
5152                 goto err_setup_tx;
5153         err = i40e_vsi_setup_rx_resources(vsi);
5154         if (err)
5155                 goto err_setup_rx;
5156
5157         err = i40e_vsi_configure(vsi);
5158         if (err)
5159                 goto err_setup_rx;
5160
5161         if (vsi->netdev) {
5162                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5163                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5164                 err = i40e_vsi_request_irq(vsi, int_name);
5165                 if (err)
5166                         goto err_setup_rx;
5167
5168                 /* Notify the stack of the actual queue counts. */
5169                 err = netif_set_real_num_tx_queues(vsi->netdev,
5170                                                    vsi->num_queue_pairs);
5171                 if (err)
5172                         goto err_set_queues;
5173
5174                 err = netif_set_real_num_rx_queues(vsi->netdev,
5175                                                    vsi->num_queue_pairs);
5176                 if (err)
5177                         goto err_set_queues;
5178
5179         } else if (vsi->type == I40E_VSI_FDIR) {
5180                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5181                          dev_driver_string(&pf->pdev->dev),
5182                          dev_name(&pf->pdev->dev));
5183                 err = i40e_vsi_request_irq(vsi, int_name);
5184
5185         } else {
5186                 err = -EINVAL;
5187                 goto err_setup_rx;
5188         }
5189
5190         err = i40e_up_complete(vsi);
5191         if (err)
5192                 goto err_up_complete;
5193
5194         return 0;
5195
5196 err_up_complete:
5197         i40e_down(vsi);
5198 err_set_queues:
5199         i40e_vsi_free_irq(vsi);
5200 err_setup_rx:
5201         i40e_vsi_free_rx_resources(vsi);
5202 err_setup_tx:
5203         i40e_vsi_free_tx_resources(vsi);
5204         if (vsi == pf->vsi[pf->lan_vsi])
5205                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5206
5207         return err;
5208 }
5209
5210 /**
5211  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5212  * @pf: Pointer to PF
5213  *
5214  * This function destroys the hlist where all the Flow Director
5215  * filters were saved.
5216  **/
5217 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5218 {
5219         struct i40e_fdir_filter *filter;
5220         struct hlist_node *node2;
5221
5222         hlist_for_each_entry_safe(filter, node2,
5223                                   &pf->fdir_filter_list, fdir_node) {
5224                 hlist_del(&filter->fdir_node);
5225                 kfree(filter);
5226         }
5227         pf->fdir_pf_active_filters = 0;
5228 }
5229
5230 /**
5231  * i40e_close - Disables a network interface
5232  * @netdev: network interface device structure
5233  *
5234  * The close entry point is called when an interface is de-activated
5235  * by the OS.  The hardware is still under the driver's control, but
5236  * this netdev interface is disabled.
5237  *
5238  * Returns 0, this is not allowed to fail
5239  **/
5240 #ifdef I40E_FCOE
5241 int i40e_close(struct net_device *netdev)
5242 #else
5243 static int i40e_close(struct net_device *netdev)
5244 #endif
5245 {
5246         struct i40e_netdev_priv *np = netdev_priv(netdev);
5247         struct i40e_vsi *vsi = np->vsi;
5248
5249         i40e_vsi_close(vsi);
5250
5251         return 0;
5252 }
5253
5254 /**
5255  * i40e_do_reset - Start a PF or Core Reset sequence
5256  * @pf: board private structure
5257  * @reset_flags: which reset is requested
5258  *
5259  * The essential difference in resets is that the PF Reset
5260  * doesn't clear the packet buffers, doesn't reset the PE
5261  * firmware, and doesn't bother the other PFs on the chip.
5262  **/
5263 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5264 {
5265         u32 val;
5266
5267         WARN_ON(in_interrupt());
5268
5269         if (i40e_check_asq_alive(&pf->hw))
5270                 i40e_vc_notify_reset(pf);
5271
5272         /* do the biggest reset indicated */
5273         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5274
5275                 /* Request a Global Reset
5276                  *
5277                  * This will start the chip's countdown to the actual full
5278                  * chip reset event, and a warning interrupt to be sent
5279                  * to all PFs, including the requestor.  Our handler
5280                  * for the warning interrupt will deal with the shutdown
5281                  * and recovery of the switch setup.
5282                  */
5283                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5284                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5285                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5286                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5287
5288         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5289
5290                 /* Request a Core Reset
5291                  *
5292                  * Same as Global Reset, except does *not* include the MAC/PHY
5293                  */
5294                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5295                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5296                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5297                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5298                 i40e_flush(&pf->hw);
5299
5300         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5301
5302                 /* Request a PF Reset
5303                  *
5304                  * Resets only the PF-specific registers
5305                  *
5306                  * This goes directly to the tear-down and rebuild of
5307                  * the switch, since we need to do all the recovery as
5308                  * for the Core Reset.
5309                  */
5310                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5311                 i40e_handle_reset_warning(pf);
5312
5313         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5314                 int v;
5315
5316                 /* Find the VSI(s) that requested a re-init */
5317                 dev_info(&pf->pdev->dev,
5318                          "VSI reinit requested\n");
5319                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5320                         struct i40e_vsi *vsi = pf->vsi[v];
5321
5322                         if (vsi != NULL &&
5323                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5324                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5325                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5326                         }
5327                 }
5328         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5329                 int v;
5330
5331                 /* Find the VSI(s) that needs to be brought down */
5332                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5333                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5334                         struct i40e_vsi *vsi = pf->vsi[v];
5335
5336                         if (vsi != NULL &&
5337                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5338                                 set_bit(__I40E_DOWN, &vsi->state);
5339                                 i40e_down(vsi);
5340                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5341                         }
5342                 }
5343         } else {
5344                 dev_info(&pf->pdev->dev,
5345                          "bad reset request 0x%08x\n", reset_flags);
5346         }
5347 }
5348
5349 #ifdef CONFIG_I40E_DCB
5350 /**
5351  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5352  * @pf: board private structure
5353  * @old_cfg: current DCB config
5354  * @new_cfg: new DCB config
5355  **/
5356 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5357                             struct i40e_dcbx_config *old_cfg,
5358                             struct i40e_dcbx_config *new_cfg)
5359 {
5360         bool need_reconfig = false;
5361
5362         /* Check if ETS configuration has changed */
5363         if (memcmp(&new_cfg->etscfg,
5364                    &old_cfg->etscfg,
5365                    sizeof(new_cfg->etscfg))) {
5366                 /* If Priority Table has changed reconfig is needed */
5367                 if (memcmp(&new_cfg->etscfg.prioritytable,
5368                            &old_cfg->etscfg.prioritytable,
5369                            sizeof(new_cfg->etscfg.prioritytable))) {
5370                         need_reconfig = true;
5371                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5372                 }
5373
5374                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5375                            &old_cfg->etscfg.tcbwtable,
5376                            sizeof(new_cfg->etscfg.tcbwtable)))
5377                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5378
5379                 if (memcmp(&new_cfg->etscfg.tsatable,
5380                            &old_cfg->etscfg.tsatable,
5381                            sizeof(new_cfg->etscfg.tsatable)))
5382                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5383         }
5384
5385         /* Check if PFC configuration has changed */
5386         if (memcmp(&new_cfg->pfc,
5387                    &old_cfg->pfc,
5388                    sizeof(new_cfg->pfc))) {
5389                 need_reconfig = true;
5390                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5391         }
5392
5393         /* Check if APP Table has changed */
5394         if (memcmp(&new_cfg->app,
5395                    &old_cfg->app,
5396                    sizeof(new_cfg->app))) {
5397                 need_reconfig = true;
5398                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5399         }
5400
5401         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5402         return need_reconfig;
5403 }
5404
5405 /**
5406  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5407  * @pf: board private structure
5408  * @e: event info posted on ARQ
5409  **/
5410 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5411                                   struct i40e_arq_event_info *e)
5412 {
5413         struct i40e_aqc_lldp_get_mib *mib =
5414                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5415         struct i40e_hw *hw = &pf->hw;
5416         struct i40e_dcbx_config tmp_dcbx_cfg;
5417         bool need_reconfig = false;
5418         int ret = 0;
5419         u8 type;
5420
5421         /* Not DCB capable or capability disabled */
5422         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5423                 return ret;
5424
5425         /* Ignore if event is not for Nearest Bridge */
5426         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5427                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5428         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5429         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5430                 return ret;
5431
5432         /* Check MIB Type and return if event for Remote MIB update */
5433         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5434         dev_dbg(&pf->pdev->dev,
5435                 "LLDP event mib type %s\n", type ? "remote" : "local");
5436         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5437                 /* Update the remote cached instance and return */
5438                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5439                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5440                                 &hw->remote_dcbx_config);
5441                 goto exit;
5442         }
5443
5444         /* Store the old configuration */
5445         tmp_dcbx_cfg = hw->local_dcbx_config;
5446
5447         /* Reset the old DCBx configuration data */
5448         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5449         /* Get updated DCBX data from firmware */
5450         ret = i40e_get_dcb_config(&pf->hw);
5451         if (ret) {
5452                 dev_info(&pf->pdev->dev,
5453                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5454                          i40e_stat_str(&pf->hw, ret),
5455                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5456                 goto exit;
5457         }
5458
5459         /* No change detected in DCBX configs */
5460         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5461                     sizeof(tmp_dcbx_cfg))) {
5462                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5463                 goto exit;
5464         }
5465
5466         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5467                                                &hw->local_dcbx_config);
5468
5469         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5470
5471         if (!need_reconfig)
5472                 goto exit;
5473
5474         /* Enable DCB tagging only when more than one TC */
5475         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5476                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5477         else
5478                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5479
5480         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5481         /* Reconfiguration needed quiesce all VSIs */
5482         i40e_pf_quiesce_all_vsi(pf);
5483
5484         /* Changes in configuration update VEB/VSI */
5485         i40e_dcb_reconfigure(pf);
5486
5487         ret = i40e_resume_port_tx(pf);
5488
5489         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5490         /* In case of error no point in resuming VSIs */
5491         if (ret)
5492                 goto exit;
5493
5494         /* Wait for the PF's Tx queues to be disabled */
5495         ret = i40e_pf_wait_txq_disabled(pf);
5496         if (ret) {
5497                 /* Schedule PF reset to recover */
5498                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5499                 i40e_service_event_schedule(pf);
5500         } else {
5501                 i40e_pf_unquiesce_all_vsi(pf);
5502         }
5503
5504 exit:
5505         return ret;
5506 }
5507 #endif /* CONFIG_I40E_DCB */
5508
5509 /**
5510  * i40e_do_reset_safe - Protected reset path for userland calls.
5511  * @pf: board private structure
5512  * @reset_flags: which reset is requested
5513  *
5514  **/
5515 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5516 {
5517         rtnl_lock();
5518         i40e_do_reset(pf, reset_flags);
5519         rtnl_unlock();
5520 }
5521
5522 /**
5523  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5524  * @pf: board private structure
5525  * @e: event info posted on ARQ
5526  *
5527  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5528  * and VF queues
5529  **/
5530 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5531                                            struct i40e_arq_event_info *e)
5532 {
5533         struct i40e_aqc_lan_overflow *data =
5534                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5535         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5536         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5537         struct i40e_hw *hw = &pf->hw;
5538         struct i40e_vf *vf;
5539         u16 vf_id;
5540
5541         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5542                 queue, qtx_ctl);
5543
5544         /* Queue belongs to VF, find the VF and issue VF reset */
5545         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5546             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5547                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5548                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5549                 vf_id -= hw->func_caps.vf_base_id;
5550                 vf = &pf->vf[vf_id];
5551                 i40e_vc_notify_vf_reset(vf);
5552                 /* Allow VF to process pending reset notification */
5553                 msleep(20);
5554                 i40e_reset_vf(vf, false);
5555         }
5556 }
5557
5558 /**
5559  * i40e_service_event_complete - Finish up the service event
5560  * @pf: board private structure
5561  **/
5562 static void i40e_service_event_complete(struct i40e_pf *pf)
5563 {
5564         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5565
5566         /* flush memory to make sure state is correct before next watchog */
5567         smp_mb__before_atomic();
5568         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5569 }
5570
5571 /**
5572  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5573  * @pf: board private structure
5574  **/
5575 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5576 {
5577         u32 val, fcnt_prog;
5578
5579         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5580         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5581         return fcnt_prog;
5582 }
5583
5584 /**
5585  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5586  * @pf: board private structure
5587  **/
5588 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5589 {
5590         u32 val, fcnt_prog;
5591
5592         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5593         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5594                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5595                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5596         return fcnt_prog;
5597 }
5598
5599 /**
5600  * i40e_get_global_fd_count - Get total FD filters programmed on device
5601  * @pf: board private structure
5602  **/
5603 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5604 {
5605         u32 val, fcnt_prog;
5606
5607         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5608         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5609                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5610                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5611         return fcnt_prog;
5612 }
5613
5614 /**
5615  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5616  * @pf: board private structure
5617  **/
5618 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5619 {
5620         struct i40e_fdir_filter *filter;
5621         u32 fcnt_prog, fcnt_avail;
5622         struct hlist_node *node;
5623
5624         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5625                 return;
5626
5627         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5628          * to re-enable
5629          */
5630         fcnt_prog = i40e_get_global_fd_count(pf);
5631         fcnt_avail = pf->fdir_pf_filter_count;
5632         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5633             (pf->fd_add_err == 0) ||
5634             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5635                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5636                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5637                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5638                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5639                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5640                 }
5641         }
5642         /* Wait for some more space to be available to turn on ATR */
5643         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5644                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5645                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5646                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5647                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5648                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5649                 }
5650         }
5651
5652         /* if hw had a problem adding a filter, delete it */
5653         if (pf->fd_inv > 0) {
5654                 hlist_for_each_entry_safe(filter, node,
5655                                           &pf->fdir_filter_list, fdir_node) {
5656                         if (filter->fd_id == pf->fd_inv) {
5657                                 hlist_del(&filter->fdir_node);
5658                                 kfree(filter);
5659                                 pf->fdir_pf_active_filters--;
5660                         }
5661                 }
5662         }
5663 }
5664
5665 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5666 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5667 /**
5668  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5669  * @pf: board private structure
5670  **/
5671 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5672 {
5673         unsigned long min_flush_time;
5674         int flush_wait_retry = 50;
5675         bool disable_atr = false;
5676         int fd_room;
5677         int reg;
5678
5679         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5680                 return;
5681
5682         if (!time_after(jiffies, pf->fd_flush_timestamp +
5683                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5684                 return;
5685
5686         /* If the flush is happening too quick and we have mostly SB rules we
5687          * should not re-enable ATR for some time.
5688          */
5689         min_flush_time = pf->fd_flush_timestamp +
5690                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5691         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5692
5693         if (!(time_after(jiffies, min_flush_time)) &&
5694             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5695                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5696                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5697                 disable_atr = true;
5698         }
5699
5700         pf->fd_flush_timestamp = jiffies;
5701         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5702         /* flush all filters */
5703         wr32(&pf->hw, I40E_PFQF_CTL_1,
5704              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5705         i40e_flush(&pf->hw);
5706         pf->fd_flush_cnt++;
5707         pf->fd_add_err = 0;
5708         do {
5709                 /* Check FD flush status every 5-6msec */
5710                 usleep_range(5000, 6000);
5711                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5712                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5713                         break;
5714         } while (flush_wait_retry--);
5715         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5716                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5717         } else {
5718                 /* replay sideband filters */
5719                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5720                 if (!disable_atr)
5721                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5722                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5723                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5724                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5725         }
5726
5727 }
5728
5729 /**
5730  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5731  * @pf: board private structure
5732  **/
5733 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5734 {
5735         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5736 }
5737
5738 /* We can see up to 256 filter programming desc in transit if the filters are
5739  * being applied really fast; before we see the first
5740  * filter miss error on Rx queue 0. Accumulating enough error messages before
5741  * reacting will make sure we don't cause flush too often.
5742  */
5743 #define I40E_MAX_FD_PROGRAM_ERROR 256
5744
5745 /**
5746  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5747  * @pf: board private structure
5748  **/
5749 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5750 {
5751
5752         /* if interface is down do nothing */
5753         if (test_bit(__I40E_DOWN, &pf->state))
5754                 return;
5755
5756         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5757                 return;
5758
5759         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5760                 i40e_fdir_flush_and_replay(pf);
5761
5762         i40e_fdir_check_and_reenable(pf);
5763
5764 }
5765
5766 /**
5767  * i40e_vsi_link_event - notify VSI of a link event
5768  * @vsi: vsi to be notified
5769  * @link_up: link up or down
5770  **/
5771 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5772 {
5773         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5774                 return;
5775
5776         switch (vsi->type) {
5777         case I40E_VSI_MAIN:
5778 #ifdef I40E_FCOE
5779         case I40E_VSI_FCOE:
5780 #endif
5781                 if (!vsi->netdev || !vsi->netdev_registered)
5782                         break;
5783
5784                 if (link_up) {
5785                         netif_carrier_on(vsi->netdev);
5786                         netif_tx_wake_all_queues(vsi->netdev);
5787                 } else {
5788                         netif_carrier_off(vsi->netdev);
5789                         netif_tx_stop_all_queues(vsi->netdev);
5790                 }
5791                 break;
5792
5793         case I40E_VSI_SRIOV:
5794         case I40E_VSI_VMDQ2:
5795         case I40E_VSI_CTRL:
5796         case I40E_VSI_MIRROR:
5797         default:
5798                 /* there is no notification for other VSIs */
5799                 break;
5800         }
5801 }
5802
5803 /**
5804  * i40e_veb_link_event - notify elements on the veb of a link event
5805  * @veb: veb to be notified
5806  * @link_up: link up or down
5807  **/
5808 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5809 {
5810         struct i40e_pf *pf;
5811         int i;
5812
5813         if (!veb || !veb->pf)
5814                 return;
5815         pf = veb->pf;
5816
5817         /* depth first... */
5818         for (i = 0; i < I40E_MAX_VEB; i++)
5819                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5820                         i40e_veb_link_event(pf->veb[i], link_up);
5821
5822         /* ... now the local VSIs */
5823         for (i = 0; i < pf->num_alloc_vsi; i++)
5824                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5825                         i40e_vsi_link_event(pf->vsi[i], link_up);
5826 }
5827
5828 /**
5829  * i40e_link_event - Update netif_carrier status
5830  * @pf: board private structure
5831  **/
5832 static void i40e_link_event(struct i40e_pf *pf)
5833 {
5834         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5835         u8 new_link_speed, old_link_speed;
5836         i40e_status status;
5837         bool new_link, old_link;
5838
5839         /* set this to force the get_link_status call to refresh state */
5840         pf->hw.phy.get_link_info = true;
5841
5842         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5843
5844         status = i40e_get_link_status(&pf->hw, &new_link);
5845         if (status) {
5846                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
5847                         status);
5848                 return;
5849         }
5850
5851         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5852         new_link_speed = pf->hw.phy.link_info.link_speed;
5853
5854         if (new_link == old_link &&
5855             new_link_speed == old_link_speed &&
5856             (test_bit(__I40E_DOWN, &vsi->state) ||
5857              new_link == netif_carrier_ok(vsi->netdev)))
5858                 return;
5859
5860         if (!test_bit(__I40E_DOWN, &vsi->state))
5861                 i40e_print_link_message(vsi, new_link);
5862
5863         /* Notify the base of the switch tree connected to
5864          * the link.  Floating VEBs are not notified.
5865          */
5866         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5867                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5868         else
5869                 i40e_vsi_link_event(vsi, new_link);
5870
5871         if (pf->vf)
5872                 i40e_vc_notify_link_state(pf);
5873
5874         if (pf->flags & I40E_FLAG_PTP)
5875                 i40e_ptp_set_increment(pf);
5876 }
5877
5878 /**
5879  * i40e_watchdog_subtask - periodic checks not using event driven response
5880  * @pf: board private structure
5881  **/
5882 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5883 {
5884         int i;
5885
5886         /* if interface is down do nothing */
5887         if (test_bit(__I40E_DOWN, &pf->state) ||
5888             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5889                 return;
5890
5891         /* make sure we don't do these things too often */
5892         if (time_before(jiffies, (pf->service_timer_previous +
5893                                   pf->service_timer_period)))
5894                 return;
5895         pf->service_timer_previous = jiffies;
5896
5897         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
5898                 i40e_link_event(pf);
5899
5900         /* Update the stats for active netdevs so the network stack
5901          * can look at updated numbers whenever it cares to
5902          */
5903         for (i = 0; i < pf->num_alloc_vsi; i++)
5904                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5905                         i40e_update_stats(pf->vsi[i]);
5906
5907         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5908                 /* Update the stats for the active switching components */
5909                 for (i = 0; i < I40E_MAX_VEB; i++)
5910                         if (pf->veb[i])
5911                                 i40e_update_veb_stats(pf->veb[i]);
5912         }
5913
5914         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5915 }
5916
5917 /**
5918  * i40e_reset_subtask - Set up for resetting the device and driver
5919  * @pf: board private structure
5920  **/
5921 static void i40e_reset_subtask(struct i40e_pf *pf)
5922 {
5923         u32 reset_flags = 0;
5924
5925         rtnl_lock();
5926         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5927                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5928                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5929         }
5930         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5931                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5932                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5933         }
5934         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5935                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5936                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5937         }
5938         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5939                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5940                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5941         }
5942         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5943                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5944                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5945         }
5946
5947         /* If there's a recovery already waiting, it takes
5948          * precedence before starting a new reset sequence.
5949          */
5950         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5951                 i40e_handle_reset_warning(pf);
5952                 goto unlock;
5953         }
5954
5955         /* If we're already down or resetting, just bail */
5956         if (reset_flags &&
5957             !test_bit(__I40E_DOWN, &pf->state) &&
5958             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5959                 i40e_do_reset(pf, reset_flags);
5960
5961 unlock:
5962         rtnl_unlock();
5963 }
5964
5965 /**
5966  * i40e_handle_link_event - Handle link event
5967  * @pf: board private structure
5968  * @e: event info posted on ARQ
5969  **/
5970 static void i40e_handle_link_event(struct i40e_pf *pf,
5971                                    struct i40e_arq_event_info *e)
5972 {
5973         struct i40e_hw *hw = &pf->hw;
5974         struct i40e_aqc_get_link_status *status =
5975                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5976
5977         /* save off old link status information */
5978         hw->phy.link_info_old = hw->phy.link_info;
5979
5980         /* Do a new status request to re-enable LSE reporting
5981          * and load new status information into the hw struct
5982          * This completely ignores any state information
5983          * in the ARQ event info, instead choosing to always
5984          * issue the AQ update link status command.
5985          */
5986         i40e_link_event(pf);
5987
5988         /* check for unqualified module, if link is down */
5989         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5990             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5991             (!(status->link_info & I40E_AQ_LINK_UP)))
5992                 dev_err(&pf->pdev->dev,
5993                         "The driver failed to link because an unqualified module was detected.\n");
5994 }
5995
5996 /**
5997  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5998  * @pf: board private structure
5999  **/
6000 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6001 {
6002         struct i40e_arq_event_info event;
6003         struct i40e_hw *hw = &pf->hw;
6004         u16 pending, i = 0;
6005         i40e_status ret;
6006         u16 opcode;
6007         u32 oldval;
6008         u32 val;
6009
6010         /* Do not run clean AQ when PF reset fails */
6011         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6012                 return;
6013
6014         /* check for error indications */
6015         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6016         oldval = val;
6017         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6018                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6019                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6020         }
6021         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6022                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6023                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6024         }
6025         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6026                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6027                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6028         }
6029         if (oldval != val)
6030                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6031
6032         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6033         oldval = val;
6034         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6035                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6036                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6037         }
6038         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6039                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6040                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6041         }
6042         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6043                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6044                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6045         }
6046         if (oldval != val)
6047                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6048
6049         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6050         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6051         if (!event.msg_buf)
6052                 return;
6053
6054         do {
6055                 ret = i40e_clean_arq_element(hw, &event, &pending);
6056                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6057                         break;
6058                 else if (ret) {
6059                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6060                         break;
6061                 }
6062
6063                 opcode = le16_to_cpu(event.desc.opcode);
6064                 switch (opcode) {
6065
6066                 case i40e_aqc_opc_get_link_status:
6067                         i40e_handle_link_event(pf, &event);
6068                         break;
6069                 case i40e_aqc_opc_send_msg_to_pf:
6070                         ret = i40e_vc_process_vf_msg(pf,
6071                                         le16_to_cpu(event.desc.retval),
6072                                         le32_to_cpu(event.desc.cookie_high),
6073                                         le32_to_cpu(event.desc.cookie_low),
6074                                         event.msg_buf,
6075                                         event.msg_len);
6076                         break;
6077                 case i40e_aqc_opc_lldp_update_mib:
6078                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6079 #ifdef CONFIG_I40E_DCB
6080                         rtnl_lock();
6081                         ret = i40e_handle_lldp_event(pf, &event);
6082                         rtnl_unlock();
6083 #endif /* CONFIG_I40E_DCB */
6084                         break;
6085                 case i40e_aqc_opc_event_lan_overflow:
6086                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6087                         i40e_handle_lan_overflow_event(pf, &event);
6088                         break;
6089                 case i40e_aqc_opc_send_msg_to_peer:
6090                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6091                         break;
6092                 case i40e_aqc_opc_nvm_erase:
6093                 case i40e_aqc_opc_nvm_update:
6094                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6095                         break;
6096                 default:
6097                         dev_info(&pf->pdev->dev,
6098                                  "ARQ Error: Unknown event 0x%04x received\n",
6099                                  opcode);
6100                         break;
6101                 }
6102         } while (pending && (i++ < pf->adminq_work_limit));
6103
6104         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6105         /* re-enable Admin queue interrupt cause */
6106         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6107         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6108         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6109         i40e_flush(hw);
6110
6111         kfree(event.msg_buf);
6112 }
6113
6114 /**
6115  * i40e_verify_eeprom - make sure eeprom is good to use
6116  * @pf: board private structure
6117  **/
6118 static void i40e_verify_eeprom(struct i40e_pf *pf)
6119 {
6120         int err;
6121
6122         err = i40e_diag_eeprom_test(&pf->hw);
6123         if (err) {
6124                 /* retry in case of garbage read */
6125                 err = i40e_diag_eeprom_test(&pf->hw);
6126                 if (err) {
6127                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6128                                  err);
6129                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6130                 }
6131         }
6132
6133         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6134                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6135                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6136         }
6137 }
6138
6139 /**
6140  * i40e_enable_pf_switch_lb
6141  * @pf: pointer to the PF structure
6142  *
6143  * enable switch loop back or die - no point in a return value
6144  **/
6145 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6146 {
6147         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6148         struct i40e_vsi_context ctxt;
6149         int ret;
6150
6151         ctxt.seid = pf->main_vsi_seid;
6152         ctxt.pf_num = pf->hw.pf_id;
6153         ctxt.vf_num = 0;
6154         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6155         if (ret) {
6156                 dev_info(&pf->pdev->dev,
6157                          "couldn't get PF vsi config, err %s aq_err %s\n",
6158                          i40e_stat_str(&pf->hw, ret),
6159                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6160                 return;
6161         }
6162         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6163         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6164         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6165
6166         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6167         if (ret) {
6168                 dev_info(&pf->pdev->dev,
6169                          "update vsi switch failed, err %s aq_err %s\n",
6170                          i40e_stat_str(&pf->hw, ret),
6171                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6172         }
6173 }
6174
6175 /**
6176  * i40e_disable_pf_switch_lb
6177  * @pf: pointer to the PF structure
6178  *
6179  * disable switch loop back or die - no point in a return value
6180  **/
6181 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6182 {
6183         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6184         struct i40e_vsi_context ctxt;
6185         int ret;
6186
6187         ctxt.seid = pf->main_vsi_seid;
6188         ctxt.pf_num = pf->hw.pf_id;
6189         ctxt.vf_num = 0;
6190         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6191         if (ret) {
6192                 dev_info(&pf->pdev->dev,
6193                          "couldn't get PF vsi config, err %s aq_err %s\n",
6194                          i40e_stat_str(&pf->hw, ret),
6195                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6196                 return;
6197         }
6198         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6199         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6200         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6201
6202         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6203         if (ret) {
6204                 dev_info(&pf->pdev->dev,
6205                          "update vsi switch failed, err %s aq_err %s\n",
6206                          i40e_stat_str(&pf->hw, ret),
6207                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6208         }
6209 }
6210
6211 /**
6212  * i40e_config_bridge_mode - Configure the HW bridge mode
6213  * @veb: pointer to the bridge instance
6214  *
6215  * Configure the loop back mode for the LAN VSI that is downlink to the
6216  * specified HW bridge instance. It is expected this function is called
6217  * when a new HW bridge is instantiated.
6218  **/
6219 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6220 {
6221         struct i40e_pf *pf = veb->pf;
6222
6223         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6224                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6225         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6226                 i40e_disable_pf_switch_lb(pf);
6227         else
6228                 i40e_enable_pf_switch_lb(pf);
6229 }
6230
6231 /**
6232  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6233  * @veb: pointer to the VEB instance
6234  *
6235  * This is a recursive function that first builds the attached VSIs then
6236  * recurses in to build the next layer of VEB.  We track the connections
6237  * through our own index numbers because the seid's from the HW could
6238  * change across the reset.
6239  **/
6240 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6241 {
6242         struct i40e_vsi *ctl_vsi = NULL;
6243         struct i40e_pf *pf = veb->pf;
6244         int v, veb_idx;
6245         int ret;
6246
6247         /* build VSI that owns this VEB, temporarily attached to base VEB */
6248         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6249                 if (pf->vsi[v] &&
6250                     pf->vsi[v]->veb_idx == veb->idx &&
6251                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6252                         ctl_vsi = pf->vsi[v];
6253                         break;
6254                 }
6255         }
6256         if (!ctl_vsi) {
6257                 dev_info(&pf->pdev->dev,
6258                          "missing owner VSI for veb_idx %d\n", veb->idx);
6259                 ret = -ENOENT;
6260                 goto end_reconstitute;
6261         }
6262         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6263                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6264         ret = i40e_add_vsi(ctl_vsi);
6265         if (ret) {
6266                 dev_info(&pf->pdev->dev,
6267                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6268                          veb->idx, ret);
6269                 goto end_reconstitute;
6270         }
6271         i40e_vsi_reset_stats(ctl_vsi);
6272
6273         /* create the VEB in the switch and move the VSI onto the VEB */
6274         ret = i40e_add_veb(veb, ctl_vsi);
6275         if (ret)
6276                 goto end_reconstitute;
6277
6278         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6279                 veb->bridge_mode = BRIDGE_MODE_VEB;
6280         else
6281                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6282         i40e_config_bridge_mode(veb);
6283
6284         /* create the remaining VSIs attached to this VEB */
6285         for (v = 0; v < pf->num_alloc_vsi; v++) {
6286                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6287                         continue;
6288
6289                 if (pf->vsi[v]->veb_idx == veb->idx) {
6290                         struct i40e_vsi *vsi = pf->vsi[v];
6291
6292                         vsi->uplink_seid = veb->seid;
6293                         ret = i40e_add_vsi(vsi);
6294                         if (ret) {
6295                                 dev_info(&pf->pdev->dev,
6296                                          "rebuild of vsi_idx %d failed: %d\n",
6297                                          v, ret);
6298                                 goto end_reconstitute;
6299                         }
6300                         i40e_vsi_reset_stats(vsi);
6301                 }
6302         }
6303
6304         /* create any VEBs attached to this VEB - RECURSION */
6305         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6306                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6307                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6308                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6309                         if (ret)
6310                                 break;
6311                 }
6312         }
6313
6314 end_reconstitute:
6315         return ret;
6316 }
6317
6318 /**
6319  * i40e_get_capabilities - get info about the HW
6320  * @pf: the PF struct
6321  **/
6322 static int i40e_get_capabilities(struct i40e_pf *pf)
6323 {
6324         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6325         u16 data_size;
6326         int buf_len;
6327         int err;
6328
6329         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6330         do {
6331                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6332                 if (!cap_buf)
6333                         return -ENOMEM;
6334
6335                 /* this loads the data into the hw struct for us */
6336                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6337                                             &data_size,
6338                                             i40e_aqc_opc_list_func_capabilities,
6339                                             NULL);
6340                 /* data loaded, buffer no longer needed */
6341                 kfree(cap_buf);
6342
6343                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6344                         /* retry with a larger buffer */
6345                         buf_len = data_size;
6346                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6347                         dev_info(&pf->pdev->dev,
6348                                  "capability discovery failed, err %s aq_err %s\n",
6349                                  i40e_stat_str(&pf->hw, err),
6350                                  i40e_aq_str(&pf->hw,
6351                                              pf->hw.aq.asq_last_status));
6352                         return -ENODEV;
6353                 }
6354         } while (err);
6355
6356         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6357                 dev_info(&pf->pdev->dev,
6358                          "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",
6359                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6360                          pf->hw.func_caps.num_msix_vectors,
6361                          pf->hw.func_caps.num_msix_vectors_vf,
6362                          pf->hw.func_caps.fd_filters_guaranteed,
6363                          pf->hw.func_caps.fd_filters_best_effort,
6364                          pf->hw.func_caps.num_tx_qp,
6365                          pf->hw.func_caps.num_vsis);
6366
6367 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6368                        + pf->hw.func_caps.num_vfs)
6369         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6370                 dev_info(&pf->pdev->dev,
6371                          "got num_vsis %d, setting num_vsis to %d\n",
6372                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6373                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6374         }
6375
6376         return 0;
6377 }
6378
6379 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6380
6381 /**
6382  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6383  * @pf: board private structure
6384  **/
6385 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6386 {
6387         struct i40e_vsi *vsi;
6388         int i;
6389
6390         /* quick workaround for an NVM issue that leaves a critical register
6391          * uninitialized
6392          */
6393         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6394                 static const u32 hkey[] = {
6395                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6396                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6397                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6398                         0x95b3a76d};
6399
6400                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6401                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6402         }
6403
6404         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6405                 return;
6406
6407         /* find existing VSI and see if it needs configuring */
6408         vsi = NULL;
6409         for (i = 0; i < pf->num_alloc_vsi; i++) {
6410                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6411                         vsi = pf->vsi[i];
6412                         break;
6413                 }
6414         }
6415
6416         /* create a new VSI if none exists */
6417         if (!vsi) {
6418                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6419                                      pf->vsi[pf->lan_vsi]->seid, 0);
6420                 if (!vsi) {
6421                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6422                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6423                         return;
6424                 }
6425         }
6426
6427         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6428 }
6429
6430 /**
6431  * i40e_fdir_teardown - release the Flow Director resources
6432  * @pf: board private structure
6433  **/
6434 static void i40e_fdir_teardown(struct i40e_pf *pf)
6435 {
6436         int i;
6437
6438         i40e_fdir_filter_exit(pf);
6439         for (i = 0; i < pf->num_alloc_vsi; i++) {
6440                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6441                         i40e_vsi_release(pf->vsi[i]);
6442                         break;
6443                 }
6444         }
6445 }
6446
6447 /**
6448  * i40e_prep_for_reset - prep for the core to reset
6449  * @pf: board private structure
6450  *
6451  * Close up the VFs and other things in prep for PF Reset.
6452   **/
6453 static void i40e_prep_for_reset(struct i40e_pf *pf)
6454 {
6455         struct i40e_hw *hw = &pf->hw;
6456         i40e_status ret = 0;
6457         u32 v;
6458
6459         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6460         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6461                 return;
6462
6463         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6464
6465         /* quiesce the VSIs and their queues that are not already DOWN */
6466         i40e_pf_quiesce_all_vsi(pf);
6467
6468         for (v = 0; v < pf->num_alloc_vsi; v++) {
6469                 if (pf->vsi[v])
6470                         pf->vsi[v]->seid = 0;
6471         }
6472
6473         i40e_shutdown_adminq(&pf->hw);
6474
6475         /* call shutdown HMC */
6476         if (hw->hmc.hmc_obj) {
6477                 ret = i40e_shutdown_lan_hmc(hw);
6478                 if (ret)
6479                         dev_warn(&pf->pdev->dev,
6480                                  "shutdown_lan_hmc failed: %d\n", ret);
6481         }
6482 }
6483
6484 /**
6485  * i40e_send_version - update firmware with driver version
6486  * @pf: PF struct
6487  */
6488 static void i40e_send_version(struct i40e_pf *pf)
6489 {
6490         struct i40e_driver_version dv;
6491
6492         dv.major_version = DRV_VERSION_MAJOR;
6493         dv.minor_version = DRV_VERSION_MINOR;
6494         dv.build_version = DRV_VERSION_BUILD;
6495         dv.subbuild_version = 0;
6496         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6497         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6498 }
6499
6500 /**
6501  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6502  * @pf: board private structure
6503  * @reinit: if the Main VSI needs to re-initialized.
6504  **/
6505 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6506 {
6507         struct i40e_hw *hw = &pf->hw;
6508         u8 set_fc_aq_fail = 0;
6509         i40e_status ret;
6510         u32 v;
6511
6512         /* Now we wait for GRST to settle out.
6513          * We don't have to delete the VEBs or VSIs from the hw switch
6514          * because the reset will make them disappear.
6515          */
6516         ret = i40e_pf_reset(hw);
6517         if (ret) {
6518                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6519                 set_bit(__I40E_RESET_FAILED, &pf->state);
6520                 goto clear_recovery;
6521         }
6522         pf->pfr_count++;
6523
6524         if (test_bit(__I40E_DOWN, &pf->state))
6525                 goto clear_recovery;
6526         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6527
6528         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6529         ret = i40e_init_adminq(&pf->hw);
6530         if (ret) {
6531                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6532                          i40e_stat_str(&pf->hw, ret),
6533                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6534                 goto clear_recovery;
6535         }
6536
6537         /* re-verify the eeprom if we just had an EMP reset */
6538         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6539                 i40e_verify_eeprom(pf);
6540
6541         i40e_clear_pxe_mode(hw);
6542         ret = i40e_get_capabilities(pf);
6543         if (ret)
6544                 goto end_core_reset;
6545
6546         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6547                                 hw->func_caps.num_rx_qp,
6548                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6549         if (ret) {
6550                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6551                 goto end_core_reset;
6552         }
6553         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6554         if (ret) {
6555                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6556                 goto end_core_reset;
6557         }
6558
6559 #ifdef CONFIG_I40E_DCB
6560         ret = i40e_init_pf_dcb(pf);
6561         if (ret) {
6562                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6563                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6564                 /* Continue without DCB enabled */
6565         }
6566 #endif /* CONFIG_I40E_DCB */
6567 #ifdef I40E_FCOE
6568         i40e_init_pf_fcoe(pf);
6569
6570 #endif
6571         /* do basic switch setup */
6572         ret = i40e_setup_pf_switch(pf, reinit);
6573         if (ret)
6574                 goto end_core_reset;
6575
6576         /* driver is only interested in link up/down and module qualification
6577          * reports from firmware
6578          */
6579         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6580                                        I40E_AQ_EVENT_LINK_UPDOWN |
6581                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6582         if (ret)
6583                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6584                          i40e_stat_str(&pf->hw, ret),
6585                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6586
6587         /* make sure our flow control settings are restored */
6588         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6589         if (ret)
6590                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6591                         i40e_stat_str(&pf->hw, ret),
6592                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6593
6594         /* Rebuild the VSIs and VEBs that existed before reset.
6595          * They are still in our local switch element arrays, so only
6596          * need to rebuild the switch model in the HW.
6597          *
6598          * If there were VEBs but the reconstitution failed, we'll try
6599          * try to recover minimal use by getting the basic PF VSI working.
6600          */
6601         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6602                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6603                 /* find the one VEB connected to the MAC, and find orphans */
6604                 for (v = 0; v < I40E_MAX_VEB; v++) {
6605                         if (!pf->veb[v])
6606                                 continue;
6607
6608                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6609                             pf->veb[v]->uplink_seid == 0) {
6610                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6611
6612                                 if (!ret)
6613                                         continue;
6614
6615                                 /* If Main VEB failed, we're in deep doodoo,
6616                                  * so give up rebuilding the switch and set up
6617                                  * for minimal rebuild of PF VSI.
6618                                  * If orphan failed, we'll report the error
6619                                  * but try to keep going.
6620                                  */
6621                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6622                                         dev_info(&pf->pdev->dev,
6623                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6624                                                  ret);
6625                                         pf->vsi[pf->lan_vsi]->uplink_seid
6626                                                                 = pf->mac_seid;
6627                                         break;
6628                                 } else if (pf->veb[v]->uplink_seid == 0) {
6629                                         dev_info(&pf->pdev->dev,
6630                                                  "rebuild of orphan VEB failed: %d\n",
6631                                                  ret);
6632                                 }
6633                         }
6634                 }
6635         }
6636
6637         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6638                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6639                 /* no VEB, so rebuild only the Main VSI */
6640                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6641                 if (ret) {
6642                         dev_info(&pf->pdev->dev,
6643                                  "rebuild of Main VSI failed: %d\n", ret);
6644                         goto end_core_reset;
6645                 }
6646         }
6647
6648         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6649             (pf->hw.aq.fw_maj_ver < 4)) {
6650                 msleep(75);
6651                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6652                 if (ret)
6653                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6654                                  i40e_stat_str(&pf->hw, ret),
6655                                  i40e_aq_str(&pf->hw,
6656                                              pf->hw.aq.asq_last_status));
6657         }
6658         /* reinit the misc interrupt */
6659         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6660                 ret = i40e_setup_misc_vector(pf);
6661
6662         /* restart the VSIs that were rebuilt and running before the reset */
6663         i40e_pf_unquiesce_all_vsi(pf);
6664
6665         if (pf->num_alloc_vfs) {
6666                 for (v = 0; v < pf->num_alloc_vfs; v++)
6667                         i40e_reset_vf(&pf->vf[v], true);
6668         }
6669
6670         /* tell the firmware that we're starting */
6671         i40e_send_version(pf);
6672
6673 end_core_reset:
6674         clear_bit(__I40E_RESET_FAILED, &pf->state);
6675 clear_recovery:
6676         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6677 }
6678
6679 /**
6680  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6681  * @pf: board private structure
6682  *
6683  * Close up the VFs and other things in prep for a Core Reset,
6684  * then get ready to rebuild the world.
6685  **/
6686 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6687 {
6688         i40e_prep_for_reset(pf);
6689         i40e_reset_and_rebuild(pf, false);
6690 }
6691
6692 /**
6693  * i40e_handle_mdd_event
6694  * @pf: pointer to the PF structure
6695  *
6696  * Called from the MDD irq handler to identify possibly malicious vfs
6697  **/
6698 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6699 {
6700         struct i40e_hw *hw = &pf->hw;
6701         bool mdd_detected = false;
6702         bool pf_mdd_detected = false;
6703         struct i40e_vf *vf;
6704         u32 reg;
6705         int i;
6706
6707         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6708                 return;
6709
6710         /* find what triggered the MDD event */
6711         reg = rd32(hw, I40E_GL_MDET_TX);
6712         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6713                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6714                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6715                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6716                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6717                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6718                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6719                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6720                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6721                                 pf->hw.func_caps.base_queue;
6722                 if (netif_msg_tx_err(pf))
6723                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6724                                  event, queue, pf_num, vf_num);
6725                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6726                 mdd_detected = true;
6727         }
6728         reg = rd32(hw, I40E_GL_MDET_RX);
6729         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6730                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6731                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6732                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6733                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6734                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6735                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6736                                 pf->hw.func_caps.base_queue;
6737                 if (netif_msg_rx_err(pf))
6738                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6739                                  event, queue, func);
6740                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6741                 mdd_detected = true;
6742         }
6743
6744         if (mdd_detected) {
6745                 reg = rd32(hw, I40E_PF_MDET_TX);
6746                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6747                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6748                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6749                         pf_mdd_detected = true;
6750                 }
6751                 reg = rd32(hw, I40E_PF_MDET_RX);
6752                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6753                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6754                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6755                         pf_mdd_detected = true;
6756                 }
6757                 /* Queue belongs to the PF, initiate a reset */
6758                 if (pf_mdd_detected) {
6759                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6760                         i40e_service_event_schedule(pf);
6761                 }
6762         }
6763
6764         /* see if one of the VFs needs its hand slapped */
6765         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6766                 vf = &(pf->vf[i]);
6767                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6768                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6769                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6770                         vf->num_mdd_events++;
6771                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6772                                  i);
6773                 }
6774
6775                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6776                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6777                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6778                         vf->num_mdd_events++;
6779                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6780                                  i);
6781                 }
6782
6783                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6784                         dev_info(&pf->pdev->dev,
6785                                  "Too many MDD events on VF %d, disabled\n", i);
6786                         dev_info(&pf->pdev->dev,
6787                                  "Use PF Control I/F to re-enable the VF\n");
6788                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6789                 }
6790         }
6791
6792         /* re-enable mdd interrupt cause */
6793         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6794         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6795         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6796         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6797         i40e_flush(hw);
6798 }
6799
6800 #ifdef CONFIG_I40E_VXLAN
6801 /**
6802  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6803  * @pf: board private structure
6804  **/
6805 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6806 {
6807         struct i40e_hw *hw = &pf->hw;
6808         i40e_status ret;
6809         __be16 port;
6810         int i;
6811
6812         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6813                 return;
6814
6815         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6816
6817         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6818                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6819                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6820                         port = pf->vxlan_ports[i];
6821                         if (port)
6822                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6823                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6824                                                      NULL, NULL);
6825                         else
6826                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6827
6828                         if (ret) {
6829                                 dev_info(&pf->pdev->dev,
6830                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6831                                          port ? "add" : "delete",
6832                                          ntohs(port), i,
6833                                          i40e_stat_str(&pf->hw, ret),
6834                                          i40e_aq_str(&pf->hw,
6835                                                     pf->hw.aq.asq_last_status));
6836                                 pf->vxlan_ports[i] = 0;
6837                         }
6838                 }
6839         }
6840 }
6841
6842 #endif
6843 /**
6844  * i40e_service_task - Run the driver's async subtasks
6845  * @work: pointer to work_struct containing our data
6846  **/
6847 static void i40e_service_task(struct work_struct *work)
6848 {
6849         struct i40e_pf *pf = container_of(work,
6850                                           struct i40e_pf,
6851                                           service_task);
6852         unsigned long start_time = jiffies;
6853
6854         /* don't bother with service tasks if a reset is in progress */
6855         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6856                 i40e_service_event_complete(pf);
6857                 return;
6858         }
6859
6860         i40e_detect_recover_hung(pf);
6861         i40e_reset_subtask(pf);
6862         i40e_handle_mdd_event(pf);
6863         i40e_vc_process_vflr_event(pf);
6864         i40e_watchdog_subtask(pf);
6865         i40e_fdir_reinit_subtask(pf);
6866         i40e_sync_filters_subtask(pf);
6867 #ifdef CONFIG_I40E_VXLAN
6868         i40e_sync_vxlan_filters_subtask(pf);
6869 #endif
6870         i40e_clean_adminq_subtask(pf);
6871
6872         i40e_service_event_complete(pf);
6873
6874         /* If the tasks have taken longer than one timer cycle or there
6875          * is more work to be done, reschedule the service task now
6876          * rather than wait for the timer to tick again.
6877          */
6878         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6879             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6880             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6881             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6882                 i40e_service_event_schedule(pf);
6883 }
6884
6885 /**
6886  * i40e_service_timer - timer callback
6887  * @data: pointer to PF struct
6888  **/
6889 static void i40e_service_timer(unsigned long data)
6890 {
6891         struct i40e_pf *pf = (struct i40e_pf *)data;
6892
6893         mod_timer(&pf->service_timer,
6894                   round_jiffies(jiffies + pf->service_timer_period));
6895         i40e_service_event_schedule(pf);
6896 }
6897
6898 /**
6899  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6900  * @vsi: the VSI being configured
6901  **/
6902 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6903 {
6904         struct i40e_pf *pf = vsi->back;
6905
6906         switch (vsi->type) {
6907         case I40E_VSI_MAIN:
6908                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6909                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6910                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6911                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6912                         vsi->num_q_vectors = pf->num_lan_msix;
6913                 else
6914                         vsi->num_q_vectors = 1;
6915
6916                 break;
6917
6918         case I40E_VSI_FDIR:
6919                 vsi->alloc_queue_pairs = 1;
6920                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6921                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6922                 vsi->num_q_vectors = 1;
6923                 break;
6924
6925         case I40E_VSI_VMDQ2:
6926                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6927                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6928                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6929                 vsi->num_q_vectors = pf->num_vmdq_msix;
6930                 break;
6931
6932         case I40E_VSI_SRIOV:
6933                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6934                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6935                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6936                 break;
6937
6938 #ifdef I40E_FCOE
6939         case I40E_VSI_FCOE:
6940                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6941                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6942                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6943                 vsi->num_q_vectors = pf->num_fcoe_msix;
6944                 break;
6945
6946 #endif /* I40E_FCOE */
6947         default:
6948                 WARN_ON(1);
6949                 return -ENODATA;
6950         }
6951
6952         return 0;
6953 }
6954
6955 /**
6956  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6957  * @type: VSI pointer
6958  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6959  *
6960  * On error: returns error code (negative)
6961  * On success: returns 0
6962  **/
6963 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6964 {
6965         int size;
6966         int ret = 0;
6967
6968         /* allocate memory for both Tx and Rx ring pointers */
6969         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6970         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6971         if (!vsi->tx_rings)
6972                 return -ENOMEM;
6973         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6974
6975         if (alloc_qvectors) {
6976                 /* allocate memory for q_vector pointers */
6977                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6978                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6979                 if (!vsi->q_vectors) {
6980                         ret = -ENOMEM;
6981                         goto err_vectors;
6982                 }
6983         }
6984         return ret;
6985
6986 err_vectors:
6987         kfree(vsi->tx_rings);
6988         return ret;
6989 }
6990
6991 /**
6992  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6993  * @pf: board private structure
6994  * @type: type of VSI
6995  *
6996  * On error: returns error code (negative)
6997  * On success: returns vsi index in PF (positive)
6998  **/
6999 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7000 {
7001         int ret = -ENODEV;
7002         struct i40e_vsi *vsi;
7003         int vsi_idx;
7004         int i;
7005
7006         /* Need to protect the allocation of the VSIs at the PF level */
7007         mutex_lock(&pf->switch_mutex);
7008
7009         /* VSI list may be fragmented if VSI creation/destruction has
7010          * been happening.  We can afford to do a quick scan to look
7011          * for any free VSIs in the list.
7012          *
7013          * find next empty vsi slot, looping back around if necessary
7014          */
7015         i = pf->next_vsi;
7016         while (i < pf->num_alloc_vsi && pf->vsi[i])
7017                 i++;
7018         if (i >= pf->num_alloc_vsi) {
7019                 i = 0;
7020                 while (i < pf->next_vsi && pf->vsi[i])
7021                         i++;
7022         }
7023
7024         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7025                 vsi_idx = i;             /* Found one! */
7026         } else {
7027                 ret = -ENODEV;
7028                 goto unlock_pf;  /* out of VSI slots! */
7029         }
7030         pf->next_vsi = ++i;
7031
7032         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7033         if (!vsi) {
7034                 ret = -ENOMEM;
7035                 goto unlock_pf;
7036         }
7037         vsi->type = type;
7038         vsi->back = pf;
7039         set_bit(__I40E_DOWN, &vsi->state);
7040         vsi->flags = 0;
7041         vsi->idx = vsi_idx;
7042         vsi->rx_itr_setting = pf->rx_itr_default;
7043         vsi->tx_itr_setting = pf->tx_itr_default;
7044         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7045                                 pf->rss_table_size : 64;
7046         vsi->netdev_registered = false;
7047         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7048         INIT_LIST_HEAD(&vsi->mac_filter_list);
7049         vsi->irqs_ready = false;
7050
7051         ret = i40e_set_num_rings_in_vsi(vsi);
7052         if (ret)
7053                 goto err_rings;
7054
7055         ret = i40e_vsi_alloc_arrays(vsi, true);
7056         if (ret)
7057                 goto err_rings;
7058
7059         /* Setup default MSIX irq handler for VSI */
7060         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7061
7062         pf->vsi[vsi_idx] = vsi;
7063         ret = vsi_idx;
7064         goto unlock_pf;
7065
7066 err_rings:
7067         pf->next_vsi = i - 1;
7068         kfree(vsi);
7069 unlock_pf:
7070         mutex_unlock(&pf->switch_mutex);
7071         return ret;
7072 }
7073
7074 /**
7075  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7076  * @type: VSI pointer
7077  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7078  *
7079  * On error: returns error code (negative)
7080  * On success: returns 0
7081  **/
7082 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7083 {
7084         /* free the ring and vector containers */
7085         if (free_qvectors) {
7086                 kfree(vsi->q_vectors);
7087                 vsi->q_vectors = NULL;
7088         }
7089         kfree(vsi->tx_rings);
7090         vsi->tx_rings = NULL;
7091         vsi->rx_rings = NULL;
7092 }
7093
7094 /**
7095  * i40e_vsi_clear - Deallocate the VSI provided
7096  * @vsi: the VSI being un-configured
7097  **/
7098 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7099 {
7100         struct i40e_pf *pf;
7101
7102         if (!vsi)
7103                 return 0;
7104
7105         if (!vsi->back)
7106                 goto free_vsi;
7107         pf = vsi->back;
7108
7109         mutex_lock(&pf->switch_mutex);
7110         if (!pf->vsi[vsi->idx]) {
7111                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7112                         vsi->idx, vsi->idx, vsi, vsi->type);
7113                 goto unlock_vsi;
7114         }
7115
7116         if (pf->vsi[vsi->idx] != vsi) {
7117                 dev_err(&pf->pdev->dev,
7118                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7119                         pf->vsi[vsi->idx]->idx,
7120                         pf->vsi[vsi->idx],
7121                         pf->vsi[vsi->idx]->type,
7122                         vsi->idx, vsi, vsi->type);
7123                 goto unlock_vsi;
7124         }
7125
7126         /* updates the PF for this cleared vsi */
7127         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7128         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7129
7130         i40e_vsi_free_arrays(vsi, true);
7131
7132         pf->vsi[vsi->idx] = NULL;
7133         if (vsi->idx < pf->next_vsi)
7134                 pf->next_vsi = vsi->idx;
7135
7136 unlock_vsi:
7137         mutex_unlock(&pf->switch_mutex);
7138 free_vsi:
7139         kfree(vsi);
7140
7141         return 0;
7142 }
7143
7144 /**
7145  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7146  * @vsi: the VSI being cleaned
7147  **/
7148 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7149 {
7150         int i;
7151
7152         if (vsi->tx_rings && vsi->tx_rings[0]) {
7153                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7154                         kfree_rcu(vsi->tx_rings[i], rcu);
7155                         vsi->tx_rings[i] = NULL;
7156                         vsi->rx_rings[i] = NULL;
7157                 }
7158         }
7159 }
7160
7161 /**
7162  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7163  * @vsi: the VSI being configured
7164  **/
7165 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7166 {
7167         struct i40e_ring *tx_ring, *rx_ring;
7168         struct i40e_pf *pf = vsi->back;
7169         int i;
7170
7171         /* Set basic values in the rings to be used later during open() */
7172         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7173                 /* allocate space for both Tx and Rx in one shot */
7174                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7175                 if (!tx_ring)
7176                         goto err_out;
7177
7178                 tx_ring->queue_index = i;
7179                 tx_ring->reg_idx = vsi->base_queue + i;
7180                 tx_ring->ring_active = false;
7181                 tx_ring->vsi = vsi;
7182                 tx_ring->netdev = vsi->netdev;
7183                 tx_ring->dev = &pf->pdev->dev;
7184                 tx_ring->count = vsi->num_desc;
7185                 tx_ring->size = 0;
7186                 tx_ring->dcb_tc = 0;
7187                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7188                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7189                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7190                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7191                 vsi->tx_rings[i] = tx_ring;
7192
7193                 rx_ring = &tx_ring[1];
7194                 rx_ring->queue_index = i;
7195                 rx_ring->reg_idx = vsi->base_queue + i;
7196                 rx_ring->ring_active = false;
7197                 rx_ring->vsi = vsi;
7198                 rx_ring->netdev = vsi->netdev;
7199                 rx_ring->dev = &pf->pdev->dev;
7200                 rx_ring->count = vsi->num_desc;
7201                 rx_ring->size = 0;
7202                 rx_ring->dcb_tc = 0;
7203                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7204                         set_ring_16byte_desc_enabled(rx_ring);
7205                 else
7206                         clear_ring_16byte_desc_enabled(rx_ring);
7207                 vsi->rx_rings[i] = rx_ring;
7208         }
7209
7210         return 0;
7211
7212 err_out:
7213         i40e_vsi_clear_rings(vsi);
7214         return -ENOMEM;
7215 }
7216
7217 /**
7218  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7219  * @pf: board private structure
7220  * @vectors: the number of MSI-X vectors to request
7221  *
7222  * Returns the number of vectors reserved, or error
7223  **/
7224 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7225 {
7226         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7227                                         I40E_MIN_MSIX, vectors);
7228         if (vectors < 0) {
7229                 dev_info(&pf->pdev->dev,
7230                          "MSI-X vector reservation failed: %d\n", vectors);
7231                 vectors = 0;
7232         }
7233
7234         return vectors;
7235 }
7236
7237 /**
7238  * i40e_init_msix - Setup the MSIX capability
7239  * @pf: board private structure
7240  *
7241  * Work with the OS to set up the MSIX vectors needed.
7242  *
7243  * Returns the number of vectors reserved or negative on failure
7244  **/
7245 static int i40e_init_msix(struct i40e_pf *pf)
7246 {
7247         struct i40e_hw *hw = &pf->hw;
7248         int vectors_left;
7249         int v_budget, i;
7250         int v_actual;
7251
7252         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7253                 return -ENODEV;
7254
7255         /* The number of vectors we'll request will be comprised of:
7256          *   - Add 1 for "other" cause for Admin Queue events, etc.
7257          *   - The number of LAN queue pairs
7258          *      - Queues being used for RSS.
7259          *              We don't need as many as max_rss_size vectors.
7260          *              use rss_size instead in the calculation since that
7261          *              is governed by number of cpus in the system.
7262          *      - assumes symmetric Tx/Rx pairing
7263          *   - The number of VMDq pairs
7264 #ifdef I40E_FCOE
7265          *   - The number of FCOE qps.
7266 #endif
7267          * Once we count this up, try the request.
7268          *
7269          * If we can't get what we want, we'll simplify to nearly nothing
7270          * and try again.  If that still fails, we punt.
7271          */
7272         vectors_left = hw->func_caps.num_msix_vectors;
7273         v_budget = 0;
7274
7275         /* reserve one vector for miscellaneous handler */
7276         if (vectors_left) {
7277                 v_budget++;
7278                 vectors_left--;
7279         }
7280
7281         /* reserve vectors for the main PF traffic queues */
7282         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7283         vectors_left -= pf->num_lan_msix;
7284         v_budget += pf->num_lan_msix;
7285
7286         /* reserve one vector for sideband flow director */
7287         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7288                 if (vectors_left) {
7289                         v_budget++;
7290                         vectors_left--;
7291                 } else {
7292                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7293                 }
7294         }
7295
7296 #ifdef I40E_FCOE
7297         /* can we reserve enough for FCoE? */
7298         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7299                 if (!vectors_left)
7300                         pf->num_fcoe_msix = 0;
7301                 else if (vectors_left >= pf->num_fcoe_qps)
7302                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7303                 else
7304                         pf->num_fcoe_msix = 1;
7305                 v_budget += pf->num_fcoe_msix;
7306                 vectors_left -= pf->num_fcoe_msix;
7307         }
7308
7309 #endif
7310         /* any vectors left over go for VMDq support */
7311         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7312                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7313                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7314
7315                 /* if we're short on vectors for what's desired, we limit
7316                  * the queues per vmdq.  If this is still more than are
7317                  * available, the user will need to change the number of
7318                  * queues/vectors used by the PF later with the ethtool
7319                  * channels command
7320                  */
7321                 if (vmdq_vecs < vmdq_vecs_wanted)
7322                         pf->num_vmdq_qps = 1;
7323                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7324
7325                 v_budget += vmdq_vecs;
7326                 vectors_left -= vmdq_vecs;
7327         }
7328
7329         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7330                                    GFP_KERNEL);
7331         if (!pf->msix_entries)
7332                 return -ENOMEM;
7333
7334         for (i = 0; i < v_budget; i++)
7335                 pf->msix_entries[i].entry = i;
7336         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7337
7338         if (v_actual != v_budget) {
7339                 /* If we have limited resources, we will start with no vectors
7340                  * for the special features and then allocate vectors to some
7341                  * of these features based on the policy and at the end disable
7342                  * the features that did not get any vectors.
7343                  */
7344 #ifdef I40E_FCOE
7345                 pf->num_fcoe_qps = 0;
7346                 pf->num_fcoe_msix = 0;
7347 #endif
7348                 pf->num_vmdq_msix = 0;
7349         }
7350
7351         if (v_actual < I40E_MIN_MSIX) {
7352                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7353                 kfree(pf->msix_entries);
7354                 pf->msix_entries = NULL;
7355                 return -ENODEV;
7356
7357         } else if (v_actual == I40E_MIN_MSIX) {
7358                 /* Adjust for minimal MSIX use */
7359                 pf->num_vmdq_vsis = 0;
7360                 pf->num_vmdq_qps = 0;
7361                 pf->num_lan_qps = 1;
7362                 pf->num_lan_msix = 1;
7363
7364         } else if (v_actual != v_budget) {
7365                 int vec;
7366
7367                 /* reserve the misc vector */
7368                 vec = v_actual - 1;
7369
7370                 /* Scale vector usage down */
7371                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7372                 pf->num_vmdq_vsis = 1;
7373                 pf->num_vmdq_qps = 1;
7374                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7375
7376                 /* partition out the remaining vectors */
7377                 switch (vec) {
7378                 case 2:
7379                         pf->num_lan_msix = 1;
7380                         break;
7381                 case 3:
7382 #ifdef I40E_FCOE
7383                         /* give one vector to FCoE */
7384                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7385                                 pf->num_lan_msix = 1;
7386                                 pf->num_fcoe_msix = 1;
7387                         }
7388 #else
7389                         pf->num_lan_msix = 2;
7390 #endif
7391                         break;
7392                 default:
7393 #ifdef I40E_FCOE
7394                         /* give one vector to FCoE */
7395                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7396                                 pf->num_fcoe_msix = 1;
7397                                 vec--;
7398                         }
7399 #endif
7400                         /* give the rest to the PF */
7401                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7402                         break;
7403                 }
7404         }
7405
7406         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7407             (pf->num_vmdq_msix == 0)) {
7408                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7409                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7410         }
7411 #ifdef I40E_FCOE
7412
7413         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7414                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7415                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7416         }
7417 #endif
7418         return v_actual;
7419 }
7420
7421 /**
7422  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7423  * @vsi: the VSI being configured
7424  * @v_idx: index of the vector in the vsi struct
7425  *
7426  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7427  **/
7428 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7429 {
7430         struct i40e_q_vector *q_vector;
7431
7432         /* allocate q_vector */
7433         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7434         if (!q_vector)
7435                 return -ENOMEM;
7436
7437         q_vector->vsi = vsi;
7438         q_vector->v_idx = v_idx;
7439         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7440         if (vsi->netdev)
7441                 netif_napi_add(vsi->netdev, &q_vector->napi,
7442                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7443
7444         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7445         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7446
7447         /* tie q_vector and vsi together */
7448         vsi->q_vectors[v_idx] = q_vector;
7449
7450         return 0;
7451 }
7452
7453 /**
7454  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7455  * @vsi: the VSI being configured
7456  *
7457  * We allocate one q_vector per queue interrupt.  If allocation fails we
7458  * return -ENOMEM.
7459  **/
7460 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7461 {
7462         struct i40e_pf *pf = vsi->back;
7463         int v_idx, num_q_vectors;
7464         int err;
7465
7466         /* if not MSIX, give the one vector only to the LAN VSI */
7467         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7468                 num_q_vectors = vsi->num_q_vectors;
7469         else if (vsi == pf->vsi[pf->lan_vsi])
7470                 num_q_vectors = 1;
7471         else
7472                 return -EINVAL;
7473
7474         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7475                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7476                 if (err)
7477                         goto err_out;
7478         }
7479
7480         return 0;
7481
7482 err_out:
7483         while (v_idx--)
7484                 i40e_free_q_vector(vsi, v_idx);
7485
7486         return err;
7487 }
7488
7489 /**
7490  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7491  * @pf: board private structure to initialize
7492  **/
7493 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7494 {
7495         int vectors = 0;
7496         ssize_t size;
7497
7498         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7499                 vectors = i40e_init_msix(pf);
7500                 if (vectors < 0) {
7501                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7502 #ifdef I40E_FCOE
7503                                        I40E_FLAG_FCOE_ENABLED   |
7504 #endif
7505                                        I40E_FLAG_RSS_ENABLED    |
7506                                        I40E_FLAG_DCB_CAPABLE    |
7507                                        I40E_FLAG_SRIOV_ENABLED  |
7508                                        I40E_FLAG_FD_SB_ENABLED  |
7509                                        I40E_FLAG_FD_ATR_ENABLED |
7510                                        I40E_FLAG_VMDQ_ENABLED);
7511
7512                         /* rework the queue expectations without MSIX */
7513                         i40e_determine_queue_usage(pf);
7514                 }
7515         }
7516
7517         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7518             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7519                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7520                 vectors = pci_enable_msi(pf->pdev);
7521                 if (vectors < 0) {
7522                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7523                                  vectors);
7524                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7525                 }
7526                 vectors = 1;  /* one MSI or Legacy vector */
7527         }
7528
7529         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7530                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7531
7532         /* set up vector assignment tracking */
7533         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7534         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7535         if (!pf->irq_pile) {
7536                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7537                 return -ENOMEM;
7538         }
7539         pf->irq_pile->num_entries = vectors;
7540         pf->irq_pile->search_hint = 0;
7541
7542         /* track first vector for misc interrupts, ignore return */
7543         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7544
7545         return 0;
7546 }
7547
7548 /**
7549  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7550  * @pf: board private structure
7551  *
7552  * This sets up the handler for MSIX 0, which is used to manage the
7553  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7554  * when in MSI or Legacy interrupt mode.
7555  **/
7556 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7557 {
7558         struct i40e_hw *hw = &pf->hw;
7559         int err = 0;
7560
7561         /* Only request the irq if this is the first time through, and
7562          * not when we're rebuilding after a Reset
7563          */
7564         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7565                 err = request_irq(pf->msix_entries[0].vector,
7566                                   i40e_intr, 0, pf->int_name, pf);
7567                 if (err) {
7568                         dev_info(&pf->pdev->dev,
7569                                  "request_irq for %s failed: %d\n",
7570                                  pf->int_name, err);
7571                         return -EFAULT;
7572                 }
7573         }
7574
7575         i40e_enable_misc_int_causes(pf);
7576
7577         /* associate no queues to the misc vector */
7578         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7579         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7580
7581         i40e_flush(hw);
7582
7583         i40e_irq_dynamic_enable_icr0(pf);
7584
7585         return err;
7586 }
7587
7588 /**
7589  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7590  * @vsi: vsi structure
7591  * @seed: RSS hash seed
7592  **/
7593 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7594 {
7595         struct i40e_aqc_get_set_rss_key_data rss_key;
7596         struct i40e_pf *pf = vsi->back;
7597         struct i40e_hw *hw = &pf->hw;
7598         bool pf_lut = false;
7599         u8 *rss_lut;
7600         int ret, i;
7601
7602         memset(&rss_key, 0, sizeof(rss_key));
7603         memcpy(&rss_key, seed, sizeof(rss_key));
7604
7605         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7606         if (!rss_lut)
7607                 return -ENOMEM;
7608
7609         /* Populate the LUT with max no. of queues in round robin fashion */
7610         for (i = 0; i < vsi->rss_table_size; i++)
7611                 rss_lut[i] = i % vsi->rss_size;
7612
7613         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7614         if (ret) {
7615                 dev_info(&pf->pdev->dev,
7616                          "Cannot set RSS key, err %s aq_err %s\n",
7617                          i40e_stat_str(&pf->hw, ret),
7618                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7619                 goto config_rss_aq_out;
7620         }
7621
7622         if (vsi->type == I40E_VSI_MAIN)
7623                 pf_lut = true;
7624
7625         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7626                                   vsi->rss_table_size);
7627         if (ret)
7628                 dev_info(&pf->pdev->dev,
7629                          "Cannot set RSS lut, err %s aq_err %s\n",
7630                          i40e_stat_str(&pf->hw, ret),
7631                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7632
7633 config_rss_aq_out:
7634         kfree(rss_lut);
7635         return ret;
7636 }
7637
7638 /**
7639  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7640  * @vsi: VSI structure
7641  **/
7642 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7643 {
7644         u8 seed[I40E_HKEY_ARRAY_SIZE];
7645         struct i40e_pf *pf = vsi->back;
7646
7647         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7648         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7649
7650         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7651                 return i40e_config_rss_aq(vsi, seed);
7652
7653         return 0;
7654 }
7655
7656 /**
7657  * i40e_config_rss_reg - Prepare for RSS if used
7658  * @pf: board private structure
7659  * @seed: RSS hash seed
7660  **/
7661 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7662 {
7663         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7664         struct i40e_hw *hw = &pf->hw;
7665         u32 *seed_dw = (u32 *)seed;
7666         u32 current_queue = 0;
7667         u32 lut = 0;
7668         int i, j;
7669
7670         /* Fill out hash function seed */
7671         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7672                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7673
7674         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7675                 lut = 0;
7676                 for (j = 0; j < 4; j++) {
7677                         if (current_queue == vsi->rss_size)
7678                                 current_queue = 0;
7679                         lut |= ((current_queue) << (8 * j));
7680                         current_queue++;
7681                 }
7682                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7683         }
7684         i40e_flush(hw);
7685
7686         return 0;
7687 }
7688
7689 /**
7690  * i40e_config_rss - Prepare for RSS if used
7691  * @pf: board private structure
7692  **/
7693 static int i40e_config_rss(struct i40e_pf *pf)
7694 {
7695         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7696         u8 seed[I40E_HKEY_ARRAY_SIZE];
7697         struct i40e_hw *hw = &pf->hw;
7698         u32 reg_val;
7699         u64 hena;
7700
7701         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7702
7703         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7704         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7705                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7706         hena |= i40e_pf_get_default_rss_hena(pf);
7707
7708         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7709         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7710
7711         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7712
7713         /* Determine the RSS table size based on the hardware capabilities */
7714         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7715         reg_val = (pf->rss_table_size == 512) ?
7716                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7717                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7718         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7719
7720         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7721                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7722         else
7723                 return i40e_config_rss_reg(pf, seed);
7724 }
7725
7726 /**
7727  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7728  * @pf: board private structure
7729  * @queue_count: the requested queue count for rss.
7730  *
7731  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7732  * count which may be different from the requested queue count.
7733  **/
7734 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7735 {
7736         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7737         int new_rss_size;
7738
7739         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7740                 return 0;
7741
7742         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7743
7744         if (queue_count != vsi->num_queue_pairs) {
7745                 vsi->req_queue_pairs = queue_count;
7746                 i40e_prep_for_reset(pf);
7747
7748                 pf->rss_size = new_rss_size;
7749
7750                 i40e_reset_and_rebuild(pf, true);
7751                 i40e_config_rss(pf);
7752         }
7753         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7754         return pf->rss_size;
7755 }
7756
7757 /**
7758  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7759  * @pf: board private structure
7760  **/
7761 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7762 {
7763         i40e_status status;
7764         bool min_valid, max_valid;
7765         u32 max_bw, min_bw;
7766
7767         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7768                                            &min_valid, &max_valid);
7769
7770         if (!status) {
7771                 if (min_valid)
7772                         pf->npar_min_bw = min_bw;
7773                 if (max_valid)
7774                         pf->npar_max_bw = max_bw;
7775         }
7776
7777         return status;
7778 }
7779
7780 /**
7781  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7782  * @pf: board private structure
7783  **/
7784 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7785 {
7786         struct i40e_aqc_configure_partition_bw_data bw_data;
7787         i40e_status status;
7788
7789         /* Set the valid bit for this PF */
7790         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7791         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7792         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7793
7794         /* Set the new bandwidths */
7795         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7796
7797         return status;
7798 }
7799
7800 /**
7801  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7802  * @pf: board private structure
7803  **/
7804 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7805 {
7806         /* Commit temporary BW setting to permanent NVM image */
7807         enum i40e_admin_queue_err last_aq_status;
7808         i40e_status ret;
7809         u16 nvm_word;
7810
7811         if (pf->hw.partition_id != 1) {
7812                 dev_info(&pf->pdev->dev,
7813                          "Commit BW only works on partition 1! This is partition %d",
7814                          pf->hw.partition_id);
7815                 ret = I40E_NOT_SUPPORTED;
7816                 goto bw_commit_out;
7817         }
7818
7819         /* Acquire NVM for read access */
7820         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7821         last_aq_status = pf->hw.aq.asq_last_status;
7822         if (ret) {
7823                 dev_info(&pf->pdev->dev,
7824                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7825                          i40e_stat_str(&pf->hw, ret),
7826                          i40e_aq_str(&pf->hw, last_aq_status));
7827                 goto bw_commit_out;
7828         }
7829
7830         /* Read word 0x10 of NVM - SW compatibility word 1 */
7831         ret = i40e_aq_read_nvm(&pf->hw,
7832                                I40E_SR_NVM_CONTROL_WORD,
7833                                0x10, sizeof(nvm_word), &nvm_word,
7834                                false, NULL);
7835         /* Save off last admin queue command status before releasing
7836          * the NVM
7837          */
7838         last_aq_status = pf->hw.aq.asq_last_status;
7839         i40e_release_nvm(&pf->hw);
7840         if (ret) {
7841                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7842                          i40e_stat_str(&pf->hw, ret),
7843                          i40e_aq_str(&pf->hw, last_aq_status));
7844                 goto bw_commit_out;
7845         }
7846
7847         /* Wait a bit for NVM release to complete */
7848         msleep(50);
7849
7850         /* Acquire NVM for write access */
7851         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7852         last_aq_status = pf->hw.aq.asq_last_status;
7853         if (ret) {
7854                 dev_info(&pf->pdev->dev,
7855                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7856                          i40e_stat_str(&pf->hw, ret),
7857                          i40e_aq_str(&pf->hw, last_aq_status));
7858                 goto bw_commit_out;
7859         }
7860         /* Write it back out unchanged to initiate update NVM,
7861          * which will force a write of the shadow (alt) RAM to
7862          * the NVM - thus storing the bandwidth values permanently.
7863          */
7864         ret = i40e_aq_update_nvm(&pf->hw,
7865                                  I40E_SR_NVM_CONTROL_WORD,
7866                                  0x10, sizeof(nvm_word),
7867                                  &nvm_word, true, NULL);
7868         /* Save off last admin queue command status before releasing
7869          * the NVM
7870          */
7871         last_aq_status = pf->hw.aq.asq_last_status;
7872         i40e_release_nvm(&pf->hw);
7873         if (ret)
7874                 dev_info(&pf->pdev->dev,
7875                          "BW settings NOT SAVED, err %s aq_err %s\n",
7876                          i40e_stat_str(&pf->hw, ret),
7877                          i40e_aq_str(&pf->hw, last_aq_status));
7878 bw_commit_out:
7879
7880         return ret;
7881 }
7882
7883 /**
7884  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7885  * @pf: board private structure to initialize
7886  *
7887  * i40e_sw_init initializes the Adapter private data structure.
7888  * Fields are initialized based on PCI device information and
7889  * OS network device settings (MTU size).
7890  **/
7891 static int i40e_sw_init(struct i40e_pf *pf)
7892 {
7893         int err = 0;
7894         int size;
7895
7896         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7897                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7898         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7899         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7900                 if (I40E_DEBUG_USER & debug)
7901                         pf->hw.debug_mask = debug;
7902                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7903                                                 I40E_DEFAULT_MSG_ENABLE);
7904         }
7905
7906         /* Set default capability flags */
7907         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7908                     I40E_FLAG_MSI_ENABLED     |
7909                     I40E_FLAG_LINK_POLLING_ENABLED |
7910                     I40E_FLAG_MSIX_ENABLED;
7911
7912         if (iommu_present(&pci_bus_type))
7913                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7914         else
7915                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7916
7917         /* Set default ITR */
7918         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7919         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7920
7921         /* Depending on PF configurations, it is possible that the RSS
7922          * maximum might end up larger than the available queues
7923          */
7924         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7925         pf->rss_size = 1;
7926         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7927         pf->rss_size_max = min_t(int, pf->rss_size_max,
7928                                  pf->hw.func_caps.num_tx_qp);
7929         if (pf->hw.func_caps.rss) {
7930                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7931                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7932         }
7933
7934         /* MFP mode enabled */
7935         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7936                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7937                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7938                 if (i40e_get_npar_bw_setting(pf))
7939                         dev_warn(&pf->pdev->dev,
7940                                  "Could not get NPAR bw settings\n");
7941                 else
7942                         dev_info(&pf->pdev->dev,
7943                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7944                                  pf->npar_min_bw, pf->npar_max_bw);
7945         }
7946
7947         /* FW/NVM is not yet fixed in this regard */
7948         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7949             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7950                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7951                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7952                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
7953                     pf->hw.num_partitions > 1)
7954                         dev_info(&pf->pdev->dev,
7955                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7956                 else
7957                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7958                 pf->fdir_pf_filter_count =
7959                                  pf->hw.func_caps.fd_filters_guaranteed;
7960                 pf->hw.fdir_shared_filter_count =
7961                                  pf->hw.func_caps.fd_filters_best_effort;
7962         }
7963
7964         if (pf->hw.func_caps.vmdq) {
7965                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7966                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7967         }
7968
7969 #ifdef I40E_FCOE
7970         i40e_init_pf_fcoe(pf);
7971
7972 #endif /* I40E_FCOE */
7973 #ifdef CONFIG_PCI_IOV
7974         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7975                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7976                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7977                 pf->num_req_vfs = min_t(int,
7978                                         pf->hw.func_caps.num_vfs,
7979                                         I40E_MAX_VF_COUNT);
7980         }
7981 #endif /* CONFIG_PCI_IOV */
7982         if (pf->hw.mac.type == I40E_MAC_X722) {
7983                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7984                              I40E_FLAG_128_QP_RSS_CAPABLE |
7985                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7986                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7987                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7988                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7989         }
7990         pf->eeprom_version = 0xDEAD;
7991         pf->lan_veb = I40E_NO_VEB;
7992         pf->lan_vsi = I40E_NO_VSI;
7993
7994         /* By default FW has this off for performance reasons */
7995         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7996
7997         /* set up queue assignment tracking */
7998         size = sizeof(struct i40e_lump_tracking)
7999                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8000         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8001         if (!pf->qp_pile) {
8002                 err = -ENOMEM;
8003                 goto sw_init_done;
8004         }
8005         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8006         pf->qp_pile->search_hint = 0;
8007
8008         pf->tx_timeout_recovery_level = 1;
8009
8010         mutex_init(&pf->switch_mutex);
8011
8012         /* If NPAR is enabled nudge the Tx scheduler */
8013         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8014                 i40e_set_npar_bw_setting(pf);
8015
8016 sw_init_done:
8017         return err;
8018 }
8019
8020 /**
8021  * i40e_set_ntuple - set the ntuple feature flag and take action
8022  * @pf: board private structure to initialize
8023  * @features: the feature set that the stack is suggesting
8024  *
8025  * returns a bool to indicate if reset needs to happen
8026  **/
8027 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8028 {
8029         bool need_reset = false;
8030
8031         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8032          * the state changed, we need to reset.
8033          */
8034         if (features & NETIF_F_NTUPLE) {
8035                 /* Enable filters and mark for reset */
8036                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8037                         need_reset = true;
8038                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8039         } else {
8040                 /* turn off filters, mark for reset and clear SW filter list */
8041                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8042                         need_reset = true;
8043                         i40e_fdir_filter_exit(pf);
8044                 }
8045                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8046                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8047                 /* reset fd counters */
8048                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8049                 pf->fdir_pf_active_filters = 0;
8050                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8051                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8052                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8053                 /* if ATR was auto disabled it can be re-enabled. */
8054                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8055                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8056                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8057         }
8058         return need_reset;
8059 }
8060
8061 /**
8062  * i40e_set_features - set the netdev feature flags
8063  * @netdev: ptr to the netdev being adjusted
8064  * @features: the feature set that the stack is suggesting
8065  **/
8066 static int i40e_set_features(struct net_device *netdev,
8067                              netdev_features_t features)
8068 {
8069         struct i40e_netdev_priv *np = netdev_priv(netdev);
8070         struct i40e_vsi *vsi = np->vsi;
8071         struct i40e_pf *pf = vsi->back;
8072         bool need_reset;
8073
8074         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8075                 i40e_vlan_stripping_enable(vsi);
8076         else
8077                 i40e_vlan_stripping_disable(vsi);
8078
8079         need_reset = i40e_set_ntuple(pf, features);
8080
8081         if (need_reset)
8082                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8083
8084         return 0;
8085 }
8086
8087 #ifdef CONFIG_I40E_VXLAN
8088 /**
8089  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8090  * @pf: board private structure
8091  * @port: The UDP port to look up
8092  *
8093  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8094  **/
8095 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8096 {
8097         u8 i;
8098
8099         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8100                 if (pf->vxlan_ports[i] == port)
8101                         return i;
8102         }
8103
8104         return i;
8105 }
8106
8107 /**
8108  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8109  * @netdev: This physical port's netdev
8110  * @sa_family: Socket Family that VXLAN is notifying us about
8111  * @port: New UDP port number that VXLAN started listening to
8112  **/
8113 static void i40e_add_vxlan_port(struct net_device *netdev,
8114                                 sa_family_t sa_family, __be16 port)
8115 {
8116         struct i40e_netdev_priv *np = netdev_priv(netdev);
8117         struct i40e_vsi *vsi = np->vsi;
8118         struct i40e_pf *pf = vsi->back;
8119         u8 next_idx;
8120         u8 idx;
8121
8122         if (sa_family == AF_INET6)
8123                 return;
8124
8125         idx = i40e_get_vxlan_port_idx(pf, port);
8126
8127         /* Check if port already exists */
8128         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8129                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8130                             ntohs(port));
8131                 return;
8132         }
8133
8134         /* Now check if there is space to add the new port */
8135         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8136
8137         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8138                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8139                             ntohs(port));
8140                 return;
8141         }
8142
8143         /* New port: add it and mark its index in the bitmap */
8144         pf->vxlan_ports[next_idx] = port;
8145         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8146         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8147 }
8148
8149 /**
8150  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8151  * @netdev: This physical port's netdev
8152  * @sa_family: Socket Family that VXLAN is notifying us about
8153  * @port: UDP port number that VXLAN stopped listening to
8154  **/
8155 static void i40e_del_vxlan_port(struct net_device *netdev,
8156                                 sa_family_t sa_family, __be16 port)
8157 {
8158         struct i40e_netdev_priv *np = netdev_priv(netdev);
8159         struct i40e_vsi *vsi = np->vsi;
8160         struct i40e_pf *pf = vsi->back;
8161         u8 idx;
8162
8163         if (sa_family == AF_INET6)
8164                 return;
8165
8166         idx = i40e_get_vxlan_port_idx(pf, port);
8167
8168         /* Check if port already exists */
8169         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8170                 /* if port exists, set it to 0 (mark for deletion)
8171                  * and make it pending
8172                  */
8173                 pf->vxlan_ports[idx] = 0;
8174                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8175                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8176         } else {
8177                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8178                             ntohs(port));
8179         }
8180 }
8181
8182 #endif
8183 static int i40e_get_phys_port_id(struct net_device *netdev,
8184                                  struct netdev_phys_item_id *ppid)
8185 {
8186         struct i40e_netdev_priv *np = netdev_priv(netdev);
8187         struct i40e_pf *pf = np->vsi->back;
8188         struct i40e_hw *hw = &pf->hw;
8189
8190         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8191                 return -EOPNOTSUPP;
8192
8193         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8194         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8195
8196         return 0;
8197 }
8198
8199 /**
8200  * i40e_ndo_fdb_add - add an entry to the hardware database
8201  * @ndm: the input from the stack
8202  * @tb: pointer to array of nladdr (unused)
8203  * @dev: the net device pointer
8204  * @addr: the MAC address entry being added
8205  * @flags: instructions from stack about fdb operation
8206  */
8207 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8208                             struct net_device *dev,
8209                             const unsigned char *addr, u16 vid,
8210                             u16 flags)
8211 {
8212         struct i40e_netdev_priv *np = netdev_priv(dev);
8213         struct i40e_pf *pf = np->vsi->back;
8214         int err = 0;
8215
8216         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8217                 return -EOPNOTSUPP;
8218
8219         if (vid) {
8220                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8221                 return -EINVAL;
8222         }
8223
8224         /* Hardware does not support aging addresses so if a
8225          * ndm_state is given only allow permanent addresses
8226          */
8227         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8228                 netdev_info(dev, "FDB only supports static addresses\n");
8229                 return -EINVAL;
8230         }
8231
8232         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8233                 err = dev_uc_add_excl(dev, addr);
8234         else if (is_multicast_ether_addr(addr))
8235                 err = dev_mc_add_excl(dev, addr);
8236         else
8237                 err = -EINVAL;
8238
8239         /* Only return duplicate errors if NLM_F_EXCL is set */
8240         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8241                 err = 0;
8242
8243         return err;
8244 }
8245
8246 /**
8247  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8248  * @dev: the netdev being configured
8249  * @nlh: RTNL message
8250  *
8251  * Inserts a new hardware bridge if not already created and
8252  * enables the bridging mode requested (VEB or VEPA). If the
8253  * hardware bridge has already been inserted and the request
8254  * is to change the mode then that requires a PF reset to
8255  * allow rebuild of the components with required hardware
8256  * bridge mode enabled.
8257  **/
8258 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8259                                    struct nlmsghdr *nlh,
8260                                    u16 flags)
8261 {
8262         struct i40e_netdev_priv *np = netdev_priv(dev);
8263         struct i40e_vsi *vsi = np->vsi;
8264         struct i40e_pf *pf = vsi->back;
8265         struct i40e_veb *veb = NULL;
8266         struct nlattr *attr, *br_spec;
8267         int i, rem;
8268
8269         /* Only for PF VSI for now */
8270         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8271                 return -EOPNOTSUPP;
8272
8273         /* Find the HW bridge for PF VSI */
8274         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8275                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8276                         veb = pf->veb[i];
8277         }
8278
8279         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8280
8281         nla_for_each_nested(attr, br_spec, rem) {
8282                 __u16 mode;
8283
8284                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8285                         continue;
8286
8287                 mode = nla_get_u16(attr);
8288                 if ((mode != BRIDGE_MODE_VEPA) &&
8289                     (mode != BRIDGE_MODE_VEB))
8290                         return -EINVAL;
8291
8292                 /* Insert a new HW bridge */
8293                 if (!veb) {
8294                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8295                                              vsi->tc_config.enabled_tc);
8296                         if (veb) {
8297                                 veb->bridge_mode = mode;
8298                                 i40e_config_bridge_mode(veb);
8299                         } else {
8300                                 /* No Bridge HW offload available */
8301                                 return -ENOENT;
8302                         }
8303                         break;
8304                 } else if (mode != veb->bridge_mode) {
8305                         /* Existing HW bridge but different mode needs reset */
8306                         veb->bridge_mode = mode;
8307                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8308                         if (mode == BRIDGE_MODE_VEB)
8309                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8310                         else
8311                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8312                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8313                         break;
8314                 }
8315         }
8316
8317         return 0;
8318 }
8319
8320 /**
8321  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8322  * @skb: skb buff
8323  * @pid: process id
8324  * @seq: RTNL message seq #
8325  * @dev: the netdev being configured
8326  * @filter_mask: unused
8327  * @nlflags: netlink flags passed in
8328  *
8329  * Return the mode in which the hardware bridge is operating in
8330  * i.e VEB or VEPA.
8331  **/
8332 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8333                                    struct net_device *dev,
8334                                    u32 __always_unused filter_mask,
8335                                    int nlflags)
8336 {
8337         struct i40e_netdev_priv *np = netdev_priv(dev);
8338         struct i40e_vsi *vsi = np->vsi;
8339         struct i40e_pf *pf = vsi->back;
8340         struct i40e_veb *veb = NULL;
8341         int i;
8342
8343         /* Only for PF VSI for now */
8344         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8345                 return -EOPNOTSUPP;
8346
8347         /* Find the HW bridge for the PF VSI */
8348         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8349                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8350                         veb = pf->veb[i];
8351         }
8352
8353         if (!veb)
8354                 return 0;
8355
8356         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8357                                        nlflags, 0, 0, filter_mask, NULL);
8358 }
8359
8360 #define I40E_MAX_TUNNEL_HDR_LEN 80
8361 /**
8362  * i40e_features_check - Validate encapsulated packet conforms to limits
8363  * @skb: skb buff
8364  * @netdev: This physical port's netdev
8365  * @features: Offload features that the stack believes apply
8366  **/
8367 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8368                                              struct net_device *dev,
8369                                              netdev_features_t features)
8370 {
8371         if (skb->encapsulation &&
8372             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8373              I40E_MAX_TUNNEL_HDR_LEN))
8374                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8375
8376         return features;
8377 }
8378
8379 static const struct net_device_ops i40e_netdev_ops = {
8380         .ndo_open               = i40e_open,
8381         .ndo_stop               = i40e_close,
8382         .ndo_start_xmit         = i40e_lan_xmit_frame,
8383         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8384         .ndo_set_rx_mode        = i40e_set_rx_mode,
8385         .ndo_validate_addr      = eth_validate_addr,
8386         .ndo_set_mac_address    = i40e_set_mac,
8387         .ndo_change_mtu         = i40e_change_mtu,
8388         .ndo_do_ioctl           = i40e_ioctl,
8389         .ndo_tx_timeout         = i40e_tx_timeout,
8390         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8391         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8392 #ifdef CONFIG_NET_POLL_CONTROLLER
8393         .ndo_poll_controller    = i40e_netpoll,
8394 #endif
8395         .ndo_setup_tc           = i40e_setup_tc,
8396 #ifdef I40E_FCOE
8397         .ndo_fcoe_enable        = i40e_fcoe_enable,
8398         .ndo_fcoe_disable       = i40e_fcoe_disable,
8399 #endif
8400         .ndo_set_features       = i40e_set_features,
8401         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8402         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8403         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8404         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8405         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8406         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8407 #ifdef CONFIG_I40E_VXLAN
8408         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8409         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8410 #endif
8411         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8412         .ndo_fdb_add            = i40e_ndo_fdb_add,
8413         .ndo_features_check     = i40e_features_check,
8414         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8415         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8416 };
8417
8418 /**
8419  * i40e_config_netdev - Setup the netdev flags
8420  * @vsi: the VSI being configured
8421  *
8422  * Returns 0 on success, negative value on failure
8423  **/
8424 static int i40e_config_netdev(struct i40e_vsi *vsi)
8425 {
8426         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8427         struct i40e_pf *pf = vsi->back;
8428         struct i40e_hw *hw = &pf->hw;
8429         struct i40e_netdev_priv *np;
8430         struct net_device *netdev;
8431         u8 mac_addr[ETH_ALEN];
8432         int etherdev_size;
8433
8434         etherdev_size = sizeof(struct i40e_netdev_priv);
8435         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8436         if (!netdev)
8437                 return -ENOMEM;
8438
8439         vsi->netdev = netdev;
8440         np = netdev_priv(netdev);
8441         np->vsi = vsi;
8442
8443         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8444                                   NETIF_F_GSO_UDP_TUNNEL |
8445                                   NETIF_F_TSO;
8446
8447         netdev->features = NETIF_F_SG                  |
8448                            NETIF_F_IP_CSUM             |
8449                            NETIF_F_SCTP_CSUM           |
8450                            NETIF_F_HIGHDMA             |
8451                            NETIF_F_GSO_UDP_TUNNEL      |
8452                            NETIF_F_HW_VLAN_CTAG_TX     |
8453                            NETIF_F_HW_VLAN_CTAG_RX     |
8454                            NETIF_F_HW_VLAN_CTAG_FILTER |
8455                            NETIF_F_IPV6_CSUM           |
8456                            NETIF_F_TSO                 |
8457                            NETIF_F_TSO_ECN             |
8458                            NETIF_F_TSO6                |
8459                            NETIF_F_RXCSUM              |
8460                            NETIF_F_RXHASH              |
8461                            0;
8462
8463         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8464                 netdev->features |= NETIF_F_NTUPLE;
8465
8466         /* copy netdev features into list of user selectable features */
8467         netdev->hw_features |= netdev->features;
8468
8469         if (vsi->type == I40E_VSI_MAIN) {
8470                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8471                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8472                 /* The following steps are necessary to prevent reception
8473                  * of tagged packets - some older NVM configurations load a
8474                  * default a MAC-VLAN filter that accepts any tagged packet
8475                  * which must be replaced by a normal filter.
8476                  */
8477                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8478                         i40e_add_filter(vsi, mac_addr,
8479                                         I40E_VLAN_ANY, false, true);
8480         } else {
8481                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8482                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8483                          pf->vsi[pf->lan_vsi]->netdev->name);
8484                 random_ether_addr(mac_addr);
8485                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8486         }
8487         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8488
8489         ether_addr_copy(netdev->dev_addr, mac_addr);
8490         ether_addr_copy(netdev->perm_addr, mac_addr);
8491         /* vlan gets same features (except vlan offload)
8492          * after any tweaks for specific VSI types
8493          */
8494         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8495                                                      NETIF_F_HW_VLAN_CTAG_RX |
8496                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8497         netdev->priv_flags |= IFF_UNICAST_FLT;
8498         netdev->priv_flags |= IFF_SUPP_NOFCS;
8499         /* Setup netdev TC information */
8500         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8501
8502         netdev->netdev_ops = &i40e_netdev_ops;
8503         netdev->watchdog_timeo = 5 * HZ;
8504         i40e_set_ethtool_ops(netdev);
8505 #ifdef I40E_FCOE
8506         i40e_fcoe_config_netdev(netdev, vsi);
8507 #endif
8508
8509         return 0;
8510 }
8511
8512 /**
8513  * i40e_vsi_delete - Delete a VSI from the switch
8514  * @vsi: the VSI being removed
8515  *
8516  * Returns 0 on success, negative value on failure
8517  **/
8518 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8519 {
8520         /* remove default VSI is not allowed */
8521         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8522                 return;
8523
8524         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8525 }
8526
8527 /**
8528  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8529  * @vsi: the VSI being queried
8530  *
8531  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8532  **/
8533 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8534 {
8535         struct i40e_veb *veb;
8536         struct i40e_pf *pf = vsi->back;
8537
8538         /* Uplink is not a bridge so default to VEB */
8539         if (vsi->veb_idx == I40E_NO_VEB)
8540                 return 1;
8541
8542         veb = pf->veb[vsi->veb_idx];
8543         /* Uplink is a bridge in VEPA mode */
8544         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8545                 return 0;
8546
8547         /* Uplink is a bridge in VEB mode */
8548         return 1;
8549 }
8550
8551 /**
8552  * i40e_add_vsi - Add a VSI to the switch
8553  * @vsi: the VSI being configured
8554  *
8555  * This initializes a VSI context depending on the VSI type to be added and
8556  * passes it down to the add_vsi aq command.
8557  **/
8558 static int i40e_add_vsi(struct i40e_vsi *vsi)
8559 {
8560         int ret = -ENODEV;
8561         struct i40e_mac_filter *f, *ftmp;
8562         struct i40e_pf *pf = vsi->back;
8563         struct i40e_hw *hw = &pf->hw;
8564         struct i40e_vsi_context ctxt;
8565         u8 enabled_tc = 0x1; /* TC0 enabled */
8566         int f_count = 0;
8567
8568         memset(&ctxt, 0, sizeof(ctxt));
8569         switch (vsi->type) {
8570         case I40E_VSI_MAIN:
8571                 /* The PF's main VSI is already setup as part of the
8572                  * device initialization, so we'll not bother with
8573                  * the add_vsi call, but we will retrieve the current
8574                  * VSI context.
8575                  */
8576                 ctxt.seid = pf->main_vsi_seid;
8577                 ctxt.pf_num = pf->hw.pf_id;
8578                 ctxt.vf_num = 0;
8579                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8580                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8581                 if (ret) {
8582                         dev_info(&pf->pdev->dev,
8583                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8584                                  i40e_stat_str(&pf->hw, ret),
8585                                  i40e_aq_str(&pf->hw,
8586                                              pf->hw.aq.asq_last_status));
8587                         return -ENOENT;
8588                 }
8589                 vsi->info = ctxt.info;
8590                 vsi->info.valid_sections = 0;
8591
8592                 vsi->seid = ctxt.seid;
8593                 vsi->id = ctxt.vsi_number;
8594
8595                 enabled_tc = i40e_pf_get_tc_map(pf);
8596
8597                 /* MFP mode setup queue map and update VSI */
8598                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8599                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8600                         memset(&ctxt, 0, sizeof(ctxt));
8601                         ctxt.seid = pf->main_vsi_seid;
8602                         ctxt.pf_num = pf->hw.pf_id;
8603                         ctxt.vf_num = 0;
8604                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8605                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8606                         if (ret) {
8607                                 dev_info(&pf->pdev->dev,
8608                                          "update vsi failed, err %s aq_err %s\n",
8609                                          i40e_stat_str(&pf->hw, ret),
8610                                          i40e_aq_str(&pf->hw,
8611                                                     pf->hw.aq.asq_last_status));
8612                                 ret = -ENOENT;
8613                                 goto err;
8614                         }
8615                         /* update the local VSI info queue map */
8616                         i40e_vsi_update_queue_map(vsi, &ctxt);
8617                         vsi->info.valid_sections = 0;
8618                 } else {
8619                         /* Default/Main VSI is only enabled for TC0
8620                          * reconfigure it to enable all TCs that are
8621                          * available on the port in SFP mode.
8622                          * For MFP case the iSCSI PF would use this
8623                          * flow to enable LAN+iSCSI TC.
8624                          */
8625                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8626                         if (ret) {
8627                                 dev_info(&pf->pdev->dev,
8628                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8629                                          enabled_tc,
8630                                          i40e_stat_str(&pf->hw, ret),
8631                                          i40e_aq_str(&pf->hw,
8632                                                     pf->hw.aq.asq_last_status));
8633                                 ret = -ENOENT;
8634                         }
8635                 }
8636                 break;
8637
8638         case I40E_VSI_FDIR:
8639                 ctxt.pf_num = hw->pf_id;
8640                 ctxt.vf_num = 0;
8641                 ctxt.uplink_seid = vsi->uplink_seid;
8642                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8643                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8644                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8645                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8646                         ctxt.info.valid_sections |=
8647                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8648                         ctxt.info.switch_id =
8649                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8650                 }
8651                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8652                 break;
8653
8654         case I40E_VSI_VMDQ2:
8655                 ctxt.pf_num = hw->pf_id;
8656                 ctxt.vf_num = 0;
8657                 ctxt.uplink_seid = vsi->uplink_seid;
8658                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8659                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8660
8661                 /* This VSI is connected to VEB so the switch_id
8662                  * should be set to zero by default.
8663                  */
8664                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8665                         ctxt.info.valid_sections |=
8666                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8667                         ctxt.info.switch_id =
8668                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8669                 }
8670
8671                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8672                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8673                 break;
8674
8675         case I40E_VSI_SRIOV:
8676                 ctxt.pf_num = hw->pf_id;
8677                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8678                 ctxt.uplink_seid = vsi->uplink_seid;
8679                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8680                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8681
8682                 /* This VSI is connected to VEB so the switch_id
8683                  * should be set to zero by default.
8684                  */
8685                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8686                         ctxt.info.valid_sections |=
8687                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8688                         ctxt.info.switch_id =
8689                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8690                 }
8691
8692                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8693                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8694                 if (pf->vf[vsi->vf_id].spoofchk) {
8695                         ctxt.info.valid_sections |=
8696                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8697                         ctxt.info.sec_flags |=
8698                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8699                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8700                 }
8701                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8702                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8703                 break;
8704
8705 #ifdef I40E_FCOE
8706         case I40E_VSI_FCOE:
8707                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8708                 if (ret) {
8709                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8710                         return ret;
8711                 }
8712                 break;
8713
8714 #endif /* I40E_FCOE */
8715         default:
8716                 return -ENODEV;
8717         }
8718
8719         if (vsi->type != I40E_VSI_MAIN) {
8720                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8721                 if (ret) {
8722                         dev_info(&vsi->back->pdev->dev,
8723                                  "add vsi failed, err %s aq_err %s\n",
8724                                  i40e_stat_str(&pf->hw, ret),
8725                                  i40e_aq_str(&pf->hw,
8726                                              pf->hw.aq.asq_last_status));
8727                         ret = -ENOENT;
8728                         goto err;
8729                 }
8730                 vsi->info = ctxt.info;
8731                 vsi->info.valid_sections = 0;
8732                 vsi->seid = ctxt.seid;
8733                 vsi->id = ctxt.vsi_number;
8734         }
8735
8736         /* If macvlan filters already exist, force them to get loaded */
8737         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8738                 f->changed = true;
8739                 f_count++;
8740
8741                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8742                         struct i40e_aqc_remove_macvlan_element_data element;
8743
8744                         memset(&element, 0, sizeof(element));
8745                         ether_addr_copy(element.mac_addr, f->macaddr);
8746                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8747                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8748                                                      &element, 1, NULL);
8749                         if (ret) {
8750                                 /* some older FW has a different default */
8751                                 element.flags |=
8752                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8753                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8754                                                        &element, 1, NULL);
8755                         }
8756
8757                         i40e_aq_mac_address_write(hw,
8758                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8759                                                   f->macaddr, NULL);
8760                 }
8761         }
8762         if (f_count) {
8763                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8764                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8765         }
8766
8767         /* Update VSI BW information */
8768         ret = i40e_vsi_get_bw_info(vsi);
8769         if (ret) {
8770                 dev_info(&pf->pdev->dev,
8771                          "couldn't get vsi bw info, err %s aq_err %s\n",
8772                          i40e_stat_str(&pf->hw, ret),
8773                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8774                 /* VSI is already added so not tearing that up */
8775                 ret = 0;
8776         }
8777
8778 err:
8779         return ret;
8780 }
8781
8782 /**
8783  * i40e_vsi_release - Delete a VSI and free its resources
8784  * @vsi: the VSI being removed
8785  *
8786  * Returns 0 on success or < 0 on error
8787  **/
8788 int i40e_vsi_release(struct i40e_vsi *vsi)
8789 {
8790         struct i40e_mac_filter *f, *ftmp;
8791         struct i40e_veb *veb = NULL;
8792         struct i40e_pf *pf;
8793         u16 uplink_seid;
8794         int i, n;
8795
8796         pf = vsi->back;
8797
8798         /* release of a VEB-owner or last VSI is not allowed */
8799         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8800                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8801                          vsi->seid, vsi->uplink_seid);
8802                 return -ENODEV;
8803         }
8804         if (vsi == pf->vsi[pf->lan_vsi] &&
8805             !test_bit(__I40E_DOWN, &pf->state)) {
8806                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8807                 return -ENODEV;
8808         }
8809
8810         uplink_seid = vsi->uplink_seid;
8811         if (vsi->type != I40E_VSI_SRIOV) {
8812                 if (vsi->netdev_registered) {
8813                         vsi->netdev_registered = false;
8814                         if (vsi->netdev) {
8815                                 /* results in a call to i40e_close() */
8816                                 unregister_netdev(vsi->netdev);
8817                         }
8818                 } else {
8819                         i40e_vsi_close(vsi);
8820                 }
8821                 i40e_vsi_disable_irq(vsi);
8822         }
8823
8824         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8825                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8826                                 f->is_vf, f->is_netdev);
8827         i40e_sync_vsi_filters(vsi, false);
8828
8829         i40e_vsi_delete(vsi);
8830         i40e_vsi_free_q_vectors(vsi);
8831         if (vsi->netdev) {
8832                 free_netdev(vsi->netdev);
8833                 vsi->netdev = NULL;
8834         }
8835         i40e_vsi_clear_rings(vsi);
8836         i40e_vsi_clear(vsi);
8837
8838         /* If this was the last thing on the VEB, except for the
8839          * controlling VSI, remove the VEB, which puts the controlling
8840          * VSI onto the next level down in the switch.
8841          *
8842          * Well, okay, there's one more exception here: don't remove
8843          * the orphan VEBs yet.  We'll wait for an explicit remove request
8844          * from up the network stack.
8845          */
8846         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8847                 if (pf->vsi[i] &&
8848                     pf->vsi[i]->uplink_seid == uplink_seid &&
8849                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8850                         n++;      /* count the VSIs */
8851                 }
8852         }
8853         for (i = 0; i < I40E_MAX_VEB; i++) {
8854                 if (!pf->veb[i])
8855                         continue;
8856                 if (pf->veb[i]->uplink_seid == uplink_seid)
8857                         n++;     /* count the VEBs */
8858                 if (pf->veb[i]->seid == uplink_seid)
8859                         veb = pf->veb[i];
8860         }
8861         if (n == 0 && veb && veb->uplink_seid != 0)
8862                 i40e_veb_release(veb);
8863
8864         return 0;
8865 }
8866
8867 /**
8868  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8869  * @vsi: ptr to the VSI
8870  *
8871  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8872  * corresponding SW VSI structure and initializes num_queue_pairs for the
8873  * newly allocated VSI.
8874  *
8875  * Returns 0 on success or negative on failure
8876  **/
8877 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8878 {
8879         int ret = -ENOENT;
8880         struct i40e_pf *pf = vsi->back;
8881
8882         if (vsi->q_vectors[0]) {
8883                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8884                          vsi->seid);
8885                 return -EEXIST;
8886         }
8887
8888         if (vsi->base_vector) {
8889                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8890                          vsi->seid, vsi->base_vector);
8891                 return -EEXIST;
8892         }
8893
8894         ret = i40e_vsi_alloc_q_vectors(vsi);
8895         if (ret) {
8896                 dev_info(&pf->pdev->dev,
8897                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8898                          vsi->num_q_vectors, vsi->seid, ret);
8899                 vsi->num_q_vectors = 0;
8900                 goto vector_setup_out;
8901         }
8902
8903         /* In Legacy mode, we do not have to get any other vector since we
8904          * piggyback on the misc/ICR0 for queue interrupts.
8905         */
8906         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8907                 return ret;
8908         if (vsi->num_q_vectors)
8909                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8910                                                  vsi->num_q_vectors, vsi->idx);
8911         if (vsi->base_vector < 0) {
8912                 dev_info(&pf->pdev->dev,
8913                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8914                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8915                 i40e_vsi_free_q_vectors(vsi);
8916                 ret = -ENOENT;
8917                 goto vector_setup_out;
8918         }
8919
8920 vector_setup_out:
8921         return ret;
8922 }
8923
8924 /**
8925  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8926  * @vsi: pointer to the vsi.
8927  *
8928  * This re-allocates a vsi's queue resources.
8929  *
8930  * Returns pointer to the successfully allocated and configured VSI sw struct
8931  * on success, otherwise returns NULL on failure.
8932  **/
8933 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8934 {
8935         struct i40e_pf *pf = vsi->back;
8936         u8 enabled_tc;
8937         int ret;
8938
8939         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8940         i40e_vsi_clear_rings(vsi);
8941
8942         i40e_vsi_free_arrays(vsi, false);
8943         i40e_set_num_rings_in_vsi(vsi);
8944         ret = i40e_vsi_alloc_arrays(vsi, false);
8945         if (ret)
8946                 goto err_vsi;
8947
8948         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8949         if (ret < 0) {
8950                 dev_info(&pf->pdev->dev,
8951                          "failed to get tracking for %d queues for VSI %d err %d\n",
8952                          vsi->alloc_queue_pairs, vsi->seid, ret);
8953                 goto err_vsi;
8954         }
8955         vsi->base_queue = ret;
8956
8957         /* Update the FW view of the VSI. Force a reset of TC and queue
8958          * layout configurations.
8959          */
8960         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8961         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8962         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8963         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8964
8965         /* assign it some queues */
8966         ret = i40e_alloc_rings(vsi);
8967         if (ret)
8968                 goto err_rings;
8969
8970         /* map all of the rings to the q_vectors */
8971         i40e_vsi_map_rings_to_vectors(vsi);
8972         return vsi;
8973
8974 err_rings:
8975         i40e_vsi_free_q_vectors(vsi);
8976         if (vsi->netdev_registered) {
8977                 vsi->netdev_registered = false;
8978                 unregister_netdev(vsi->netdev);
8979                 free_netdev(vsi->netdev);
8980                 vsi->netdev = NULL;
8981         }
8982         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8983 err_vsi:
8984         i40e_vsi_clear(vsi);
8985         return NULL;
8986 }
8987
8988 /**
8989  * i40e_vsi_setup - Set up a VSI by a given type
8990  * @pf: board private structure
8991  * @type: VSI type
8992  * @uplink_seid: the switch element to link to
8993  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8994  *
8995  * This allocates the sw VSI structure and its queue resources, then add a VSI
8996  * to the identified VEB.
8997  *
8998  * Returns pointer to the successfully allocated and configure VSI sw struct on
8999  * success, otherwise returns NULL on failure.
9000  **/
9001 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9002                                 u16 uplink_seid, u32 param1)
9003 {
9004         struct i40e_vsi *vsi = NULL;
9005         struct i40e_veb *veb = NULL;
9006         int ret, i;
9007         int v_idx;
9008
9009         /* The requested uplink_seid must be either
9010          *     - the PF's port seid
9011          *              no VEB is needed because this is the PF
9012          *              or this is a Flow Director special case VSI
9013          *     - seid of an existing VEB
9014          *     - seid of a VSI that owns an existing VEB
9015          *     - seid of a VSI that doesn't own a VEB
9016          *              a new VEB is created and the VSI becomes the owner
9017          *     - seid of the PF VSI, which is what creates the first VEB
9018          *              this is a special case of the previous
9019          *
9020          * Find which uplink_seid we were given and create a new VEB if needed
9021          */
9022         for (i = 0; i < I40E_MAX_VEB; i++) {
9023                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9024                         veb = pf->veb[i];
9025                         break;
9026                 }
9027         }
9028
9029         if (!veb && uplink_seid != pf->mac_seid) {
9030
9031                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9032                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9033                                 vsi = pf->vsi[i];
9034                                 break;
9035                         }
9036                 }
9037                 if (!vsi) {
9038                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9039                                  uplink_seid);
9040                         return NULL;
9041                 }
9042
9043                 if (vsi->uplink_seid == pf->mac_seid)
9044                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9045                                              vsi->tc_config.enabled_tc);
9046                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9047                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9048                                              vsi->tc_config.enabled_tc);
9049                 if (veb) {
9050                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9051                                 dev_info(&vsi->back->pdev->dev,
9052                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9053                                 return NULL;
9054                         }
9055                         /* We come up by default in VEPA mode if SRIOV is not
9056                          * already enabled, in which case we can't force VEPA
9057                          * mode.
9058                          */
9059                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9060                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9061                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9062                         }
9063                         i40e_config_bridge_mode(veb);
9064                 }
9065                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9066                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9067                                 veb = pf->veb[i];
9068                 }
9069                 if (!veb) {
9070                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9071                         return NULL;
9072                 }
9073
9074                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9075                 uplink_seid = veb->seid;
9076         }
9077
9078         /* get vsi sw struct */
9079         v_idx = i40e_vsi_mem_alloc(pf, type);
9080         if (v_idx < 0)
9081                 goto err_alloc;
9082         vsi = pf->vsi[v_idx];
9083         if (!vsi)
9084                 goto err_alloc;
9085         vsi->type = type;
9086         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9087
9088         if (type == I40E_VSI_MAIN)
9089                 pf->lan_vsi = v_idx;
9090         else if (type == I40E_VSI_SRIOV)
9091                 vsi->vf_id = param1;
9092         /* assign it some queues */
9093         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9094                                 vsi->idx);
9095         if (ret < 0) {
9096                 dev_info(&pf->pdev->dev,
9097                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9098                          vsi->alloc_queue_pairs, vsi->seid, ret);
9099                 goto err_vsi;
9100         }
9101         vsi->base_queue = ret;
9102
9103         /* get a VSI from the hardware */
9104         vsi->uplink_seid = uplink_seid;
9105         ret = i40e_add_vsi(vsi);
9106         if (ret)
9107                 goto err_vsi;
9108
9109         switch (vsi->type) {
9110         /* setup the netdev if needed */
9111         case I40E_VSI_MAIN:
9112         case I40E_VSI_VMDQ2:
9113         case I40E_VSI_FCOE:
9114                 ret = i40e_config_netdev(vsi);
9115                 if (ret)
9116                         goto err_netdev;
9117                 ret = register_netdev(vsi->netdev);
9118                 if (ret)
9119                         goto err_netdev;
9120                 vsi->netdev_registered = true;
9121                 netif_carrier_off(vsi->netdev);
9122 #ifdef CONFIG_I40E_DCB
9123                 /* Setup DCB netlink interface */
9124                 i40e_dcbnl_setup(vsi);
9125 #endif /* CONFIG_I40E_DCB */
9126                 /* fall through */
9127
9128         case I40E_VSI_FDIR:
9129                 /* set up vectors and rings if needed */
9130                 ret = i40e_vsi_setup_vectors(vsi);
9131                 if (ret)
9132                         goto err_msix;
9133
9134                 ret = i40e_alloc_rings(vsi);
9135                 if (ret)
9136                         goto err_rings;
9137
9138                 /* map all of the rings to the q_vectors */
9139                 i40e_vsi_map_rings_to_vectors(vsi);
9140
9141                 i40e_vsi_reset_stats(vsi);
9142                 break;
9143
9144         default:
9145                 /* no netdev or rings for the other VSI types */
9146                 break;
9147         }
9148
9149         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9150             (vsi->type == I40E_VSI_VMDQ2)) {
9151                 ret = i40e_vsi_config_rss(vsi);
9152         }
9153         return vsi;
9154
9155 err_rings:
9156         i40e_vsi_free_q_vectors(vsi);
9157 err_msix:
9158         if (vsi->netdev_registered) {
9159                 vsi->netdev_registered = false;
9160                 unregister_netdev(vsi->netdev);
9161                 free_netdev(vsi->netdev);
9162                 vsi->netdev = NULL;
9163         }
9164 err_netdev:
9165         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9166 err_vsi:
9167         i40e_vsi_clear(vsi);
9168 err_alloc:
9169         return NULL;
9170 }
9171
9172 /**
9173  * i40e_veb_get_bw_info - Query VEB BW information
9174  * @veb: the veb to query
9175  *
9176  * Query the Tx scheduler BW configuration data for given VEB
9177  **/
9178 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9179 {
9180         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9181         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9182         struct i40e_pf *pf = veb->pf;
9183         struct i40e_hw *hw = &pf->hw;
9184         u32 tc_bw_max;
9185         int ret = 0;
9186         int i;
9187
9188         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9189                                                   &bw_data, NULL);
9190         if (ret) {
9191                 dev_info(&pf->pdev->dev,
9192                          "query veb bw config failed, err %s aq_err %s\n",
9193                          i40e_stat_str(&pf->hw, ret),
9194                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9195                 goto out;
9196         }
9197
9198         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9199                                                    &ets_data, NULL);
9200         if (ret) {
9201                 dev_info(&pf->pdev->dev,
9202                          "query veb bw ets config failed, err %s aq_err %s\n",
9203                          i40e_stat_str(&pf->hw, ret),
9204                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9205                 goto out;
9206         }
9207
9208         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9209         veb->bw_max_quanta = ets_data.tc_bw_max;
9210         veb->is_abs_credits = bw_data.absolute_credits_enable;
9211         veb->enabled_tc = ets_data.tc_valid_bits;
9212         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9213                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9214         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9215                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9216                 veb->bw_tc_limit_credits[i] =
9217                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9218                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9219         }
9220
9221 out:
9222         return ret;
9223 }
9224
9225 /**
9226  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9227  * @pf: board private structure
9228  *
9229  * On error: returns error code (negative)
9230  * On success: returns vsi index in PF (positive)
9231  **/
9232 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9233 {
9234         int ret = -ENOENT;
9235         struct i40e_veb *veb;
9236         int i;
9237
9238         /* Need to protect the allocation of switch elements at the PF level */
9239         mutex_lock(&pf->switch_mutex);
9240
9241         /* VEB list may be fragmented if VEB creation/destruction has
9242          * been happening.  We can afford to do a quick scan to look
9243          * for any free slots in the list.
9244          *
9245          * find next empty veb slot, looping back around if necessary
9246          */
9247         i = 0;
9248         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9249                 i++;
9250         if (i >= I40E_MAX_VEB) {
9251                 ret = -ENOMEM;
9252                 goto err_alloc_veb;  /* out of VEB slots! */
9253         }
9254
9255         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9256         if (!veb) {
9257                 ret = -ENOMEM;
9258                 goto err_alloc_veb;
9259         }
9260         veb->pf = pf;
9261         veb->idx = i;
9262         veb->enabled_tc = 1;
9263
9264         pf->veb[i] = veb;
9265         ret = i;
9266 err_alloc_veb:
9267         mutex_unlock(&pf->switch_mutex);
9268         return ret;
9269 }
9270
9271 /**
9272  * i40e_switch_branch_release - Delete a branch of the switch tree
9273  * @branch: where to start deleting
9274  *
9275  * This uses recursion to find the tips of the branch to be
9276  * removed, deleting until we get back to and can delete this VEB.
9277  **/
9278 static void i40e_switch_branch_release(struct i40e_veb *branch)
9279 {
9280         struct i40e_pf *pf = branch->pf;
9281         u16 branch_seid = branch->seid;
9282         u16 veb_idx = branch->idx;
9283         int i;
9284
9285         /* release any VEBs on this VEB - RECURSION */
9286         for (i = 0; i < I40E_MAX_VEB; i++) {
9287                 if (!pf->veb[i])
9288                         continue;
9289                 if (pf->veb[i]->uplink_seid == branch->seid)
9290                         i40e_switch_branch_release(pf->veb[i]);
9291         }
9292
9293         /* Release the VSIs on this VEB, but not the owner VSI.
9294          *
9295          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9296          *       the VEB itself, so don't use (*branch) after this loop.
9297          */
9298         for (i = 0; i < pf->num_alloc_vsi; i++) {
9299                 if (!pf->vsi[i])
9300                         continue;
9301                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9302                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9303                         i40e_vsi_release(pf->vsi[i]);
9304                 }
9305         }
9306
9307         /* There's one corner case where the VEB might not have been
9308          * removed, so double check it here and remove it if needed.
9309          * This case happens if the veb was created from the debugfs
9310          * commands and no VSIs were added to it.
9311          */
9312         if (pf->veb[veb_idx])
9313                 i40e_veb_release(pf->veb[veb_idx]);
9314 }
9315
9316 /**
9317  * i40e_veb_clear - remove veb struct
9318  * @veb: the veb to remove
9319  **/
9320 static void i40e_veb_clear(struct i40e_veb *veb)
9321 {
9322         if (!veb)
9323                 return;
9324
9325         if (veb->pf) {
9326                 struct i40e_pf *pf = veb->pf;
9327
9328                 mutex_lock(&pf->switch_mutex);
9329                 if (pf->veb[veb->idx] == veb)
9330                         pf->veb[veb->idx] = NULL;
9331                 mutex_unlock(&pf->switch_mutex);
9332         }
9333
9334         kfree(veb);
9335 }
9336
9337 /**
9338  * i40e_veb_release - Delete a VEB and free its resources
9339  * @veb: the VEB being removed
9340  **/
9341 void i40e_veb_release(struct i40e_veb *veb)
9342 {
9343         struct i40e_vsi *vsi = NULL;
9344         struct i40e_pf *pf;
9345         int i, n = 0;
9346
9347         pf = veb->pf;
9348
9349         /* find the remaining VSI and check for extras */
9350         for (i = 0; i < pf->num_alloc_vsi; i++) {
9351                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9352                         n++;
9353                         vsi = pf->vsi[i];
9354                 }
9355         }
9356         if (n != 1) {
9357                 dev_info(&pf->pdev->dev,
9358                          "can't remove VEB %d with %d VSIs left\n",
9359                          veb->seid, n);
9360                 return;
9361         }
9362
9363         /* move the remaining VSI to uplink veb */
9364         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9365         if (veb->uplink_seid) {
9366                 vsi->uplink_seid = veb->uplink_seid;
9367                 if (veb->uplink_seid == pf->mac_seid)
9368                         vsi->veb_idx = I40E_NO_VEB;
9369                 else
9370                         vsi->veb_idx = veb->veb_idx;
9371         } else {
9372                 /* floating VEB */
9373                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9374                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9375         }
9376
9377         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9378         i40e_veb_clear(veb);
9379 }
9380
9381 /**
9382  * i40e_add_veb - create the VEB in the switch
9383  * @veb: the VEB to be instantiated
9384  * @vsi: the controlling VSI
9385  **/
9386 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9387 {
9388         struct i40e_pf *pf = veb->pf;
9389         bool is_default = veb->pf->cur_promisc;
9390         bool is_cloud = false;
9391         int ret;
9392
9393         /* get a VEB from the hardware */
9394         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9395                               veb->enabled_tc, is_default,
9396                               is_cloud, &veb->seid, NULL);
9397         if (ret) {
9398                 dev_info(&pf->pdev->dev,
9399                          "couldn't add VEB, err %s aq_err %s\n",
9400                          i40e_stat_str(&pf->hw, ret),
9401                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9402                 return -EPERM;
9403         }
9404
9405         /* get statistics counter */
9406         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9407                                          &veb->stats_idx, NULL, NULL, NULL);
9408         if (ret) {
9409                 dev_info(&pf->pdev->dev,
9410                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9411                          i40e_stat_str(&pf->hw, ret),
9412                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9413                 return -EPERM;
9414         }
9415         ret = i40e_veb_get_bw_info(veb);
9416         if (ret) {
9417                 dev_info(&pf->pdev->dev,
9418                          "couldn't get VEB bw info, err %s aq_err %s\n",
9419                          i40e_stat_str(&pf->hw, ret),
9420                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9421                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9422                 return -ENOENT;
9423         }
9424
9425         vsi->uplink_seid = veb->seid;
9426         vsi->veb_idx = veb->idx;
9427         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9428
9429         return 0;
9430 }
9431
9432 /**
9433  * i40e_veb_setup - Set up a VEB
9434  * @pf: board private structure
9435  * @flags: VEB setup flags
9436  * @uplink_seid: the switch element to link to
9437  * @vsi_seid: the initial VSI seid
9438  * @enabled_tc: Enabled TC bit-map
9439  *
9440  * This allocates the sw VEB structure and links it into the switch
9441  * It is possible and legal for this to be a duplicate of an already
9442  * existing VEB.  It is also possible for both uplink and vsi seids
9443  * to be zero, in order to create a floating VEB.
9444  *
9445  * Returns pointer to the successfully allocated VEB sw struct on
9446  * success, otherwise returns NULL on failure.
9447  **/
9448 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9449                                 u16 uplink_seid, u16 vsi_seid,
9450                                 u8 enabled_tc)
9451 {
9452         struct i40e_veb *veb, *uplink_veb = NULL;
9453         int vsi_idx, veb_idx;
9454         int ret;
9455
9456         /* if one seid is 0, the other must be 0 to create a floating relay */
9457         if ((uplink_seid == 0 || vsi_seid == 0) &&
9458             (uplink_seid + vsi_seid != 0)) {
9459                 dev_info(&pf->pdev->dev,
9460                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9461                          uplink_seid, vsi_seid);
9462                 return NULL;
9463         }
9464
9465         /* make sure there is such a vsi and uplink */
9466         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9467                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9468                         break;
9469         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9470                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9471                          vsi_seid);
9472                 return NULL;
9473         }
9474
9475         if (uplink_seid && uplink_seid != pf->mac_seid) {
9476                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9477                         if (pf->veb[veb_idx] &&
9478                             pf->veb[veb_idx]->seid == uplink_seid) {
9479                                 uplink_veb = pf->veb[veb_idx];
9480                                 break;
9481                         }
9482                 }
9483                 if (!uplink_veb) {
9484                         dev_info(&pf->pdev->dev,
9485                                  "uplink seid %d not found\n", uplink_seid);
9486                         return NULL;
9487                 }
9488         }
9489
9490         /* get veb sw struct */
9491         veb_idx = i40e_veb_mem_alloc(pf);
9492         if (veb_idx < 0)
9493                 goto err_alloc;
9494         veb = pf->veb[veb_idx];
9495         veb->flags = flags;
9496         veb->uplink_seid = uplink_seid;
9497         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9498         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9499
9500         /* create the VEB in the switch */
9501         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9502         if (ret)
9503                 goto err_veb;
9504         if (vsi_idx == pf->lan_vsi)
9505                 pf->lan_veb = veb->idx;
9506
9507         return veb;
9508
9509 err_veb:
9510         i40e_veb_clear(veb);
9511 err_alloc:
9512         return NULL;
9513 }
9514
9515 /**
9516  * i40e_setup_pf_switch_element - set PF vars based on switch type
9517  * @pf: board private structure
9518  * @ele: element we are building info from
9519  * @num_reported: total number of elements
9520  * @printconfig: should we print the contents
9521  *
9522  * helper function to assist in extracting a few useful SEID values.
9523  **/
9524 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9525                                 struct i40e_aqc_switch_config_element_resp *ele,
9526                                 u16 num_reported, bool printconfig)
9527 {
9528         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9529         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9530         u8 element_type = ele->element_type;
9531         u16 seid = le16_to_cpu(ele->seid);
9532
9533         if (printconfig)
9534                 dev_info(&pf->pdev->dev,
9535                          "type=%d seid=%d uplink=%d downlink=%d\n",
9536                          element_type, seid, uplink_seid, downlink_seid);
9537
9538         switch (element_type) {
9539         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9540                 pf->mac_seid = seid;
9541                 break;
9542         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9543                 /* Main VEB? */
9544                 if (uplink_seid != pf->mac_seid)
9545                         break;
9546                 if (pf->lan_veb == I40E_NO_VEB) {
9547                         int v;
9548
9549                         /* find existing or else empty VEB */
9550                         for (v = 0; v < I40E_MAX_VEB; v++) {
9551                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9552                                         pf->lan_veb = v;
9553                                         break;
9554                                 }
9555                         }
9556                         if (pf->lan_veb == I40E_NO_VEB) {
9557                                 v = i40e_veb_mem_alloc(pf);
9558                                 if (v < 0)
9559                                         break;
9560                                 pf->lan_veb = v;
9561                         }
9562                 }
9563
9564                 pf->veb[pf->lan_veb]->seid = seid;
9565                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9566                 pf->veb[pf->lan_veb]->pf = pf;
9567                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9568                 break;
9569         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9570                 if (num_reported != 1)
9571                         break;
9572                 /* This is immediately after a reset so we can assume this is
9573                  * the PF's VSI
9574                  */
9575                 pf->mac_seid = uplink_seid;
9576                 pf->pf_seid = downlink_seid;
9577                 pf->main_vsi_seid = seid;
9578                 if (printconfig)
9579                         dev_info(&pf->pdev->dev,
9580                                  "pf_seid=%d main_vsi_seid=%d\n",
9581                                  pf->pf_seid, pf->main_vsi_seid);
9582                 break;
9583         case I40E_SWITCH_ELEMENT_TYPE_PF:
9584         case I40E_SWITCH_ELEMENT_TYPE_VF:
9585         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9586         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9587         case I40E_SWITCH_ELEMENT_TYPE_PE:
9588         case I40E_SWITCH_ELEMENT_TYPE_PA:
9589                 /* ignore these for now */
9590                 break;
9591         default:
9592                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9593                          element_type, seid);
9594                 break;
9595         }
9596 }
9597
9598 /**
9599  * i40e_fetch_switch_configuration - Get switch config from firmware
9600  * @pf: board private structure
9601  * @printconfig: should we print the contents
9602  *
9603  * Get the current switch configuration from the device and
9604  * extract a few useful SEID values.
9605  **/
9606 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9607 {
9608         struct i40e_aqc_get_switch_config_resp *sw_config;
9609         u16 next_seid = 0;
9610         int ret = 0;
9611         u8 *aq_buf;
9612         int i;
9613
9614         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9615         if (!aq_buf)
9616                 return -ENOMEM;
9617
9618         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9619         do {
9620                 u16 num_reported, num_total;
9621
9622                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9623                                                 I40E_AQ_LARGE_BUF,
9624                                                 &next_seid, NULL);
9625                 if (ret) {
9626                         dev_info(&pf->pdev->dev,
9627                                  "get switch config failed err %s aq_err %s\n",
9628                                  i40e_stat_str(&pf->hw, ret),
9629                                  i40e_aq_str(&pf->hw,
9630                                              pf->hw.aq.asq_last_status));
9631                         kfree(aq_buf);
9632                         return -ENOENT;
9633                 }
9634
9635                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9636                 num_total = le16_to_cpu(sw_config->header.num_total);
9637
9638                 if (printconfig)
9639                         dev_info(&pf->pdev->dev,
9640                                  "header: %d reported %d total\n",
9641                                  num_reported, num_total);
9642
9643                 for (i = 0; i < num_reported; i++) {
9644                         struct i40e_aqc_switch_config_element_resp *ele =
9645                                 &sw_config->element[i];
9646
9647                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9648                                                      printconfig);
9649                 }
9650         } while (next_seid != 0);
9651
9652         kfree(aq_buf);
9653         return ret;
9654 }
9655
9656 /**
9657  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9658  * @pf: board private structure
9659  * @reinit: if the Main VSI needs to re-initialized.
9660  *
9661  * Returns 0 on success, negative value on failure
9662  **/
9663 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9664 {
9665         int ret;
9666
9667         /* find out what's out there already */
9668         ret = i40e_fetch_switch_configuration(pf, false);
9669         if (ret) {
9670                 dev_info(&pf->pdev->dev,
9671                          "couldn't fetch switch config, err %s aq_err %s\n",
9672                          i40e_stat_str(&pf->hw, ret),
9673                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9674                 return ret;
9675         }
9676         i40e_pf_reset_stats(pf);
9677
9678         /* first time setup */
9679         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9680                 struct i40e_vsi *vsi = NULL;
9681                 u16 uplink_seid;
9682
9683                 /* Set up the PF VSI associated with the PF's main VSI
9684                  * that is already in the HW switch
9685                  */
9686                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9687                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9688                 else
9689                         uplink_seid = pf->mac_seid;
9690                 if (pf->lan_vsi == I40E_NO_VSI)
9691                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9692                 else if (reinit)
9693                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9694                 if (!vsi) {
9695                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9696                         i40e_fdir_teardown(pf);
9697                         return -EAGAIN;
9698                 }
9699         } else {
9700                 /* force a reset of TC and queue layout configurations */
9701                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9702
9703                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9704                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9705                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9706         }
9707         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9708
9709         i40e_fdir_sb_setup(pf);
9710
9711         /* Setup static PF queue filter control settings */
9712         ret = i40e_setup_pf_filter_control(pf);
9713         if (ret) {
9714                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9715                          ret);
9716                 /* Failure here should not stop continuing other steps */
9717         }
9718
9719         /* enable RSS in the HW, even for only one queue, as the stack can use
9720          * the hash
9721          */
9722         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9723                 i40e_config_rss(pf);
9724
9725         /* fill in link information and enable LSE reporting */
9726         i40e_update_link_info(&pf->hw);
9727         i40e_link_event(pf);
9728
9729         /* Initialize user-specific link properties */
9730         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9731                                   I40E_AQ_AN_COMPLETED) ? true : false);
9732
9733         i40e_ptp_init(pf);
9734
9735         return ret;
9736 }
9737
9738 /**
9739  * i40e_determine_queue_usage - Work out queue distribution
9740  * @pf: board private structure
9741  **/
9742 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9743 {
9744         int queues_left;
9745
9746         pf->num_lan_qps = 0;
9747 #ifdef I40E_FCOE
9748         pf->num_fcoe_qps = 0;
9749 #endif
9750
9751         /* Find the max queues to be put into basic use.  We'll always be
9752          * using TC0, whether or not DCB is running, and TC0 will get the
9753          * big RSS set.
9754          */
9755         queues_left = pf->hw.func_caps.num_tx_qp;
9756
9757         if ((queues_left == 1) ||
9758             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9759                 /* one qp for PF, no queues for anything else */
9760                 queues_left = 0;
9761                 pf->rss_size = pf->num_lan_qps = 1;
9762
9763                 /* make sure all the fancies are disabled */
9764                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9765 #ifdef I40E_FCOE
9766                                I40E_FLAG_FCOE_ENABLED   |
9767 #endif
9768                                I40E_FLAG_FD_SB_ENABLED  |
9769                                I40E_FLAG_FD_ATR_ENABLED |
9770                                I40E_FLAG_DCB_CAPABLE    |
9771                                I40E_FLAG_SRIOV_ENABLED  |
9772                                I40E_FLAG_VMDQ_ENABLED);
9773         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9774                                   I40E_FLAG_FD_SB_ENABLED |
9775                                   I40E_FLAG_FD_ATR_ENABLED |
9776                                   I40E_FLAG_DCB_CAPABLE))) {
9777                 /* one qp for PF */
9778                 pf->rss_size = pf->num_lan_qps = 1;
9779                 queues_left -= pf->num_lan_qps;
9780
9781                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9782 #ifdef I40E_FCOE
9783                                I40E_FLAG_FCOE_ENABLED   |
9784 #endif
9785                                I40E_FLAG_FD_SB_ENABLED  |
9786                                I40E_FLAG_FD_ATR_ENABLED |
9787                                I40E_FLAG_DCB_ENABLED    |
9788                                I40E_FLAG_VMDQ_ENABLED);
9789         } else {
9790                 /* Not enough queues for all TCs */
9791                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9792                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9793                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9794                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9795                 }
9796                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9797                                         num_online_cpus());
9798                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9799                                         pf->hw.func_caps.num_tx_qp);
9800
9801                 queues_left -= pf->num_lan_qps;
9802         }
9803
9804 #ifdef I40E_FCOE
9805         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9806                 if (I40E_DEFAULT_FCOE <= queues_left) {
9807                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9808                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9809                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9810                 } else {
9811                         pf->num_fcoe_qps = 0;
9812                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9813                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9814                 }
9815
9816                 queues_left -= pf->num_fcoe_qps;
9817         }
9818
9819 #endif
9820         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9821                 if (queues_left > 1) {
9822                         queues_left -= 1; /* save 1 queue for FD */
9823                 } else {
9824                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9825                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9826                 }
9827         }
9828
9829         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9830             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9831                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9832                                         (queues_left / pf->num_vf_qps));
9833                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9834         }
9835
9836         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9837             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9838                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9839                                           (queues_left / pf->num_vmdq_qps));
9840                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9841         }
9842
9843         pf->queues_left = queues_left;
9844         dev_dbg(&pf->pdev->dev,
9845                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
9846                 pf->hw.func_caps.num_tx_qp,
9847                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
9848                 pf->num_lan_qps, pf->rss_size, pf->num_req_vfs, pf->num_vf_qps,
9849                 pf->num_vmdq_vsis, pf->num_vmdq_qps, queues_left);
9850 #ifdef I40E_FCOE
9851         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9852 #endif
9853 }
9854
9855 /**
9856  * i40e_setup_pf_filter_control - Setup PF static filter control
9857  * @pf: PF to be setup
9858  *
9859  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9860  * settings. If PE/FCoE are enabled then it will also set the per PF
9861  * based filter sizes required for them. It also enables Flow director,
9862  * ethertype and macvlan type filter settings for the pf.
9863  *
9864  * Returns 0 on success, negative on failure
9865  **/
9866 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9867 {
9868         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9869
9870         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9871
9872         /* Flow Director is enabled */
9873         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9874                 settings->enable_fdir = true;
9875
9876         /* Ethtype and MACVLAN filters enabled for PF */
9877         settings->enable_ethtype = true;
9878         settings->enable_macvlan = true;
9879
9880         if (i40e_set_filter_control(&pf->hw, settings))
9881                 return -ENOENT;
9882
9883         return 0;
9884 }
9885
9886 #define INFO_STRING_LEN 255
9887 static void i40e_print_features(struct i40e_pf *pf)
9888 {
9889         struct i40e_hw *hw = &pf->hw;
9890         char *buf, *string;
9891
9892         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9893         if (!string) {
9894                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9895                 return;
9896         }
9897
9898         buf = string;
9899
9900         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9901 #ifdef CONFIG_PCI_IOV
9902         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9903 #endif
9904         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9905                        pf->hw.func_caps.num_vsis,
9906                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9907                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9908
9909         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9910                 buf += sprintf(buf, "RSS ");
9911         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9912                 buf += sprintf(buf, "FD_ATR ");
9913         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9914                 buf += sprintf(buf, "FD_SB ");
9915                 buf += sprintf(buf, "NTUPLE ");
9916         }
9917         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9918                 buf += sprintf(buf, "DCB ");
9919 #if IS_ENABLED(CONFIG_VXLAN)
9920         buf += sprintf(buf, "VxLAN ");
9921 #endif
9922         if (pf->flags & I40E_FLAG_PTP)
9923                 buf += sprintf(buf, "PTP ");
9924 #ifdef I40E_FCOE
9925         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9926                 buf += sprintf(buf, "FCOE ");
9927 #endif
9928
9929         BUG_ON(buf > (string + INFO_STRING_LEN));
9930         dev_info(&pf->pdev->dev, "%s\n", string);
9931         kfree(string);
9932 }
9933
9934 /**
9935  * i40e_probe - Device initialization routine
9936  * @pdev: PCI device information struct
9937  * @ent: entry in i40e_pci_tbl
9938  *
9939  * i40e_probe initializes a PF identified by a pci_dev structure.
9940  * The OS initialization, configuring of the PF private structure,
9941  * and a hardware reset occur.
9942  *
9943  * Returns 0 on success, negative on failure
9944  **/
9945 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9946 {
9947         struct i40e_aq_get_phy_abilities_resp abilities;
9948         struct i40e_pf *pf;
9949         struct i40e_hw *hw;
9950         static u16 pfs_found;
9951         u16 wol_nvm_bits;
9952         u16 link_status;
9953         int err = 0;
9954         u32 len;
9955         u32 i;
9956
9957         err = pci_enable_device_mem(pdev);
9958         if (err)
9959                 return err;
9960
9961         /* set up for high or low dma */
9962         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9963         if (err) {
9964                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9965                 if (err) {
9966                         dev_err(&pdev->dev,
9967                                 "DMA configuration failed: 0x%x\n", err);
9968                         goto err_dma;
9969                 }
9970         }
9971
9972         /* set up pci connections */
9973         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9974                                            IORESOURCE_MEM), i40e_driver_name);
9975         if (err) {
9976                 dev_info(&pdev->dev,
9977                          "pci_request_selected_regions failed %d\n", err);
9978                 goto err_pci_reg;
9979         }
9980
9981         pci_enable_pcie_error_reporting(pdev);
9982         pci_set_master(pdev);
9983
9984         /* Now that we have a PCI connection, we need to do the
9985          * low level device setup.  This is primarily setting up
9986          * the Admin Queue structures and then querying for the
9987          * device's current profile information.
9988          */
9989         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9990         if (!pf) {
9991                 err = -ENOMEM;
9992                 goto err_pf_alloc;
9993         }
9994         pf->next_vsi = 0;
9995         pf->pdev = pdev;
9996         set_bit(__I40E_DOWN, &pf->state);
9997
9998         hw = &pf->hw;
9999         hw->back = pf;
10000
10001         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10002                                 I40E_MAX_CSR_SPACE);
10003
10004         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10005         if (!hw->hw_addr) {
10006                 err = -EIO;
10007                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10008                          (unsigned int)pci_resource_start(pdev, 0),
10009                          pf->ioremap_len, err);
10010                 goto err_ioremap;
10011         }
10012         hw->vendor_id = pdev->vendor;
10013         hw->device_id = pdev->device;
10014         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10015         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10016         hw->subsystem_device_id = pdev->subsystem_device;
10017         hw->bus.device = PCI_SLOT(pdev->devfn);
10018         hw->bus.func = PCI_FUNC(pdev->devfn);
10019         pf->instance = pfs_found;
10020
10021         if (debug != -1) {
10022                 pf->msg_enable = pf->hw.debug_mask;
10023                 pf->msg_enable = debug;
10024         }
10025
10026         /* do a special CORER for clearing PXE mode once at init */
10027         if (hw->revision_id == 0 &&
10028             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10029                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10030                 i40e_flush(hw);
10031                 msleep(200);
10032                 pf->corer_count++;
10033
10034                 i40e_clear_pxe_mode(hw);
10035         }
10036
10037         /* Reset here to make sure all is clean and to define PF 'n' */
10038         i40e_clear_hw(hw);
10039         err = i40e_pf_reset(hw);
10040         if (err) {
10041                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10042                 goto err_pf_reset;
10043         }
10044         pf->pfr_count++;
10045
10046         hw->aq.num_arq_entries = I40E_AQ_LEN;
10047         hw->aq.num_asq_entries = I40E_AQ_LEN;
10048         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10049         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10050         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10051
10052         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10053                  "%s-%s:misc",
10054                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10055
10056         err = i40e_init_shared_code(hw);
10057         if (err) {
10058                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10059                          err);
10060                 goto err_pf_reset;
10061         }
10062
10063         /* set up a default setting for link flow control */
10064         pf->hw.fc.requested_mode = I40E_FC_NONE;
10065
10066         err = i40e_init_adminq(hw);
10067         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10068
10069         /* provide additional fw info, like api and ver */
10070         dev_info(&pdev->dev, "fw_version:%d.%d.%05d\n",
10071                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build);
10072         dev_info(&pdev->dev, "fw api version:%d.%d\n",
10073                  hw->aq.api_maj_ver, hw->aq.api_min_ver);
10074
10075         if (err) {
10076                 dev_info(&pdev->dev,
10077                          "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");
10078                 goto err_pf_reset;
10079         }
10080
10081         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10082             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10083                 dev_info(&pdev->dev,
10084                          "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");
10085         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10086                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10087                 dev_info(&pdev->dev,
10088                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10089
10090         i40e_verify_eeprom(pf);
10091
10092         /* Rev 0 hardware was never productized */
10093         if (hw->revision_id < 1)
10094                 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");
10095
10096         i40e_clear_pxe_mode(hw);
10097         err = i40e_get_capabilities(pf);
10098         if (err)
10099                 goto err_adminq_setup;
10100
10101         err = i40e_sw_init(pf);
10102         if (err) {
10103                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10104                 goto err_sw_init;
10105         }
10106
10107         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10108                                 hw->func_caps.num_rx_qp,
10109                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10110         if (err) {
10111                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10112                 goto err_init_lan_hmc;
10113         }
10114
10115         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10116         if (err) {
10117                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10118                 err = -ENOENT;
10119                 goto err_configure_lan_hmc;
10120         }
10121
10122         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10123          * Ignore error return codes because if it was already disabled via
10124          * hardware settings this will fail
10125          */
10126         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10127             (pf->hw.aq.fw_maj_ver < 4)) {
10128                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10129                 i40e_aq_stop_lldp(hw, true, NULL);
10130         }
10131
10132         i40e_get_mac_addr(hw, hw->mac.addr);
10133         if (!is_valid_ether_addr(hw->mac.addr)) {
10134                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10135                 err = -EIO;
10136                 goto err_mac_addr;
10137         }
10138         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10139         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10140         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10141         if (is_valid_ether_addr(hw->mac.port_addr))
10142                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10143 #ifdef I40E_FCOE
10144         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10145         if (err)
10146                 dev_info(&pdev->dev,
10147                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10148         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10149                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10150                          hw->mac.san_addr);
10151                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10152         }
10153         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10154 #endif /* I40E_FCOE */
10155
10156         pci_set_drvdata(pdev, pf);
10157         pci_save_state(pdev);
10158 #ifdef CONFIG_I40E_DCB
10159         err = i40e_init_pf_dcb(pf);
10160         if (err) {
10161                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10162                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10163                 /* Continue without DCB enabled */
10164         }
10165 #endif /* CONFIG_I40E_DCB */
10166
10167         /* set up periodic task facility */
10168         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10169         pf->service_timer_period = HZ;
10170
10171         INIT_WORK(&pf->service_task, i40e_service_task);
10172         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10173         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10174
10175         /* NVM bit on means WoL disabled for the port */
10176         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10177         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10178                 pf->wol_en = false;
10179         else
10180                 pf->wol_en = true;
10181         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10182
10183         /* set up the main switch operations */
10184         i40e_determine_queue_usage(pf);
10185         err = i40e_init_interrupt_scheme(pf);
10186         if (err)
10187                 goto err_switch_setup;
10188
10189         /* The number of VSIs reported by the FW is the minimum guaranteed
10190          * to us; HW supports far more and we share the remaining pool with
10191          * the other PFs. We allocate space for more than the guarantee with
10192          * the understanding that we might not get them all later.
10193          */
10194         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10195                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10196         else
10197                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10198
10199         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10200         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10201         pf->vsi = kzalloc(len, GFP_KERNEL);
10202         if (!pf->vsi) {
10203                 err = -ENOMEM;
10204                 goto err_switch_setup;
10205         }
10206
10207 #ifdef CONFIG_PCI_IOV
10208         /* prep for VF support */
10209         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10210             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10211             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10212                 if (pci_num_vf(pdev))
10213                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10214         }
10215 #endif
10216         err = i40e_setup_pf_switch(pf, false);
10217         if (err) {
10218                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10219                 goto err_vsis;
10220         }
10221         /* if FDIR VSI was set up, start it now */
10222         for (i = 0; i < pf->num_alloc_vsi; i++) {
10223                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10224                         i40e_vsi_open(pf->vsi[i]);
10225                         break;
10226                 }
10227         }
10228
10229         /* driver is only interested in link up/down and module qualification
10230          * reports from firmware
10231          */
10232         err = i40e_aq_set_phy_int_mask(&pf->hw,
10233                                        I40E_AQ_EVENT_LINK_UPDOWN |
10234                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10235         if (err)
10236                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10237                          i40e_stat_str(&pf->hw, err),
10238                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10239
10240         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10241             (pf->hw.aq.fw_maj_ver < 4)) {
10242                 msleep(75);
10243                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10244                 if (err)
10245                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10246                                  i40e_stat_str(&pf->hw, err),
10247                                  i40e_aq_str(&pf->hw,
10248                                              pf->hw.aq.asq_last_status));
10249         }
10250         /* The main driver is (mostly) up and happy. We need to set this state
10251          * before setting up the misc vector or we get a race and the vector
10252          * ends up disabled forever.
10253          */
10254         clear_bit(__I40E_DOWN, &pf->state);
10255
10256         /* In case of MSIX we are going to setup the misc vector right here
10257          * to handle admin queue events etc. In case of legacy and MSI
10258          * the misc functionality and queue processing is combined in
10259          * the same vector and that gets setup at open.
10260          */
10261         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10262                 err = i40e_setup_misc_vector(pf);
10263                 if (err) {
10264                         dev_info(&pdev->dev,
10265                                  "setup of misc vector failed: %d\n", err);
10266                         goto err_vsis;
10267                 }
10268         }
10269
10270 #ifdef CONFIG_PCI_IOV
10271         /* prep for VF support */
10272         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10273             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10274             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10275                 u32 val;
10276
10277                 /* disable link interrupts for VFs */
10278                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10279                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10280                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10281                 i40e_flush(hw);
10282
10283                 if (pci_num_vf(pdev)) {
10284                         dev_info(&pdev->dev,
10285                                  "Active VFs found, allocating resources.\n");
10286                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10287                         if (err)
10288                                 dev_info(&pdev->dev,
10289                                          "Error %d allocating resources for existing VFs\n",
10290                                          err);
10291                 }
10292         }
10293 #endif /* CONFIG_PCI_IOV */
10294
10295         pfs_found++;
10296
10297         i40e_dbg_pf_init(pf);
10298
10299         /* tell the firmware that we're starting */
10300         i40e_send_version(pf);
10301
10302         /* since everything's happy, start the service_task timer */
10303         mod_timer(&pf->service_timer,
10304                   round_jiffies(jiffies + pf->service_timer_period));
10305
10306 #ifdef I40E_FCOE
10307         /* create FCoE interface */
10308         i40e_fcoe_vsi_setup(pf);
10309
10310 #endif
10311 #define PCI_SPEED_SIZE 8
10312 #define PCI_WIDTH_SIZE 8
10313         /* Devices on the IOSF bus do not have this information
10314          * and will report PCI Gen 1 x 1 by default so don't bother
10315          * checking them.
10316          */
10317         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10318                 char speed[PCI_SPEED_SIZE] = "Unknown";
10319                 char width[PCI_WIDTH_SIZE] = "Unknown";
10320
10321                 /* Get the negotiated link width and speed from PCI config
10322                  * space
10323                  */
10324                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10325                                           &link_status);
10326
10327                 i40e_set_pci_config_data(hw, link_status);
10328
10329                 switch (hw->bus.speed) {
10330                 case i40e_bus_speed_8000:
10331                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10332                 case i40e_bus_speed_5000:
10333                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10334                 case i40e_bus_speed_2500:
10335                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10336                 default:
10337                         break;
10338                 }
10339                 switch (hw->bus.width) {
10340                 case i40e_bus_width_pcie_x8:
10341                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10342                 case i40e_bus_width_pcie_x4:
10343                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10344                 case i40e_bus_width_pcie_x2:
10345                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10346                 case i40e_bus_width_pcie_x1:
10347                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10348                 default:
10349                         break;
10350                 }
10351
10352                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10353                          speed, width);
10354
10355                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10356                     hw->bus.speed < i40e_bus_speed_8000) {
10357                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10358                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10359                 }
10360         }
10361
10362         /* get the requested speeds from the fw */
10363         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10364         if (err)
10365                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10366                         i40e_stat_str(&pf->hw, err),
10367                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10368         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10369
10370         /* get the supported phy types from the fw */
10371         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10372         if (err)
10373                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10374                         i40e_stat_str(&pf->hw, err),
10375                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10376         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10377
10378         /* print a string summarizing features */
10379         i40e_print_features(pf);
10380
10381         return 0;
10382
10383         /* Unwind what we've done if something failed in the setup */
10384 err_vsis:
10385         set_bit(__I40E_DOWN, &pf->state);
10386         i40e_clear_interrupt_scheme(pf);
10387         kfree(pf->vsi);
10388 err_switch_setup:
10389         i40e_reset_interrupt_capability(pf);
10390         del_timer_sync(&pf->service_timer);
10391 err_mac_addr:
10392 err_configure_lan_hmc:
10393         (void)i40e_shutdown_lan_hmc(hw);
10394 err_init_lan_hmc:
10395         kfree(pf->qp_pile);
10396 err_sw_init:
10397 err_adminq_setup:
10398         (void)i40e_shutdown_adminq(hw);
10399 err_pf_reset:
10400         iounmap(hw->hw_addr);
10401 err_ioremap:
10402         kfree(pf);
10403 err_pf_alloc:
10404         pci_disable_pcie_error_reporting(pdev);
10405         pci_release_selected_regions(pdev,
10406                                      pci_select_bars(pdev, IORESOURCE_MEM));
10407 err_pci_reg:
10408 err_dma:
10409         pci_disable_device(pdev);
10410         return err;
10411 }
10412
10413 /**
10414  * i40e_remove - Device removal routine
10415  * @pdev: PCI device information struct
10416  *
10417  * i40e_remove is called by the PCI subsystem to alert the driver
10418  * that is should release a PCI device.  This could be caused by a
10419  * Hot-Plug event, or because the driver is going to be removed from
10420  * memory.
10421  **/
10422 static void i40e_remove(struct pci_dev *pdev)
10423 {
10424         struct i40e_pf *pf = pci_get_drvdata(pdev);
10425         i40e_status ret_code;
10426         int i;
10427
10428         i40e_dbg_pf_exit(pf);
10429
10430         i40e_ptp_stop(pf);
10431
10432         /* no more scheduling of any task */
10433         set_bit(__I40E_DOWN, &pf->state);
10434         del_timer_sync(&pf->service_timer);
10435         cancel_work_sync(&pf->service_task);
10436         i40e_fdir_teardown(pf);
10437
10438         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10439                 i40e_free_vfs(pf);
10440                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10441         }
10442
10443         i40e_fdir_teardown(pf);
10444
10445         /* If there is a switch structure or any orphans, remove them.
10446          * This will leave only the PF's VSI remaining.
10447          */
10448         for (i = 0; i < I40E_MAX_VEB; i++) {
10449                 if (!pf->veb[i])
10450                         continue;
10451
10452                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10453                     pf->veb[i]->uplink_seid == 0)
10454                         i40e_switch_branch_release(pf->veb[i]);
10455         }
10456
10457         /* Now we can shutdown the PF's VSI, just before we kill
10458          * adminq and hmc.
10459          */
10460         if (pf->vsi[pf->lan_vsi])
10461                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10462
10463         /* shutdown and destroy the HMC */
10464         if (pf->hw.hmc.hmc_obj) {
10465                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10466                 if (ret_code)
10467                         dev_warn(&pdev->dev,
10468                                  "Failed to destroy the HMC resources: %d\n",
10469                                  ret_code);
10470         }
10471
10472         /* shutdown the adminq */
10473         ret_code = i40e_shutdown_adminq(&pf->hw);
10474         if (ret_code)
10475                 dev_warn(&pdev->dev,
10476                          "Failed to destroy the Admin Queue resources: %d\n",
10477                          ret_code);
10478
10479         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10480         i40e_clear_interrupt_scheme(pf);
10481         for (i = 0; i < pf->num_alloc_vsi; i++) {
10482                 if (pf->vsi[i]) {
10483                         i40e_vsi_clear_rings(pf->vsi[i]);
10484                         i40e_vsi_clear(pf->vsi[i]);
10485                         pf->vsi[i] = NULL;
10486                 }
10487         }
10488
10489         for (i = 0; i < I40E_MAX_VEB; i++) {
10490                 kfree(pf->veb[i]);
10491                 pf->veb[i] = NULL;
10492         }
10493
10494         kfree(pf->qp_pile);
10495         kfree(pf->vsi);
10496
10497         iounmap(pf->hw.hw_addr);
10498         kfree(pf);
10499         pci_release_selected_regions(pdev,
10500                                      pci_select_bars(pdev, IORESOURCE_MEM));
10501
10502         pci_disable_pcie_error_reporting(pdev);
10503         pci_disable_device(pdev);
10504 }
10505
10506 /**
10507  * i40e_pci_error_detected - warning that something funky happened in PCI land
10508  * @pdev: PCI device information struct
10509  *
10510  * Called to warn that something happened and the error handling steps
10511  * are in progress.  Allows the driver to quiesce things, be ready for
10512  * remediation.
10513  **/
10514 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10515                                                 enum pci_channel_state error)
10516 {
10517         struct i40e_pf *pf = pci_get_drvdata(pdev);
10518
10519         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10520
10521         /* shutdown all operations */
10522         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10523                 rtnl_lock();
10524                 i40e_prep_for_reset(pf);
10525                 rtnl_unlock();
10526         }
10527
10528         /* Request a slot reset */
10529         return PCI_ERS_RESULT_NEED_RESET;
10530 }
10531
10532 /**
10533  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10534  * @pdev: PCI device information struct
10535  *
10536  * Called to find if the driver can work with the device now that
10537  * the pci slot has been reset.  If a basic connection seems good
10538  * (registers are readable and have sane content) then return a
10539  * happy little PCI_ERS_RESULT_xxx.
10540  **/
10541 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10542 {
10543         struct i40e_pf *pf = pci_get_drvdata(pdev);
10544         pci_ers_result_t result;
10545         int err;
10546         u32 reg;
10547
10548         dev_dbg(&pdev->dev, "%s\n", __func__);
10549         if (pci_enable_device_mem(pdev)) {
10550                 dev_info(&pdev->dev,
10551                          "Cannot re-enable PCI device after reset.\n");
10552                 result = PCI_ERS_RESULT_DISCONNECT;
10553         } else {
10554                 pci_set_master(pdev);
10555                 pci_restore_state(pdev);
10556                 pci_save_state(pdev);
10557                 pci_wake_from_d3(pdev, false);
10558
10559                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10560                 if (reg == 0)
10561                         result = PCI_ERS_RESULT_RECOVERED;
10562                 else
10563                         result = PCI_ERS_RESULT_DISCONNECT;
10564         }
10565
10566         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10567         if (err) {
10568                 dev_info(&pdev->dev,
10569                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10570                          err);
10571                 /* non-fatal, continue */
10572         }
10573
10574         return result;
10575 }
10576
10577 /**
10578  * i40e_pci_error_resume - restart operations after PCI error recovery
10579  * @pdev: PCI device information struct
10580  *
10581  * Called to allow the driver to bring things back up after PCI error
10582  * and/or reset recovery has finished.
10583  **/
10584 static void i40e_pci_error_resume(struct pci_dev *pdev)
10585 {
10586         struct i40e_pf *pf = pci_get_drvdata(pdev);
10587
10588         dev_dbg(&pdev->dev, "%s\n", __func__);
10589         if (test_bit(__I40E_SUSPENDED, &pf->state))
10590                 return;
10591
10592         rtnl_lock();
10593         i40e_handle_reset_warning(pf);
10594         rtnl_unlock();
10595 }
10596
10597 /**
10598  * i40e_shutdown - PCI callback for shutting down
10599  * @pdev: PCI device information struct
10600  **/
10601 static void i40e_shutdown(struct pci_dev *pdev)
10602 {
10603         struct i40e_pf *pf = pci_get_drvdata(pdev);
10604         struct i40e_hw *hw = &pf->hw;
10605
10606         set_bit(__I40E_SUSPENDED, &pf->state);
10607         set_bit(__I40E_DOWN, &pf->state);
10608         rtnl_lock();
10609         i40e_prep_for_reset(pf);
10610         rtnl_unlock();
10611
10612         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10613         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10614
10615         del_timer_sync(&pf->service_timer);
10616         cancel_work_sync(&pf->service_task);
10617         i40e_fdir_teardown(pf);
10618
10619         rtnl_lock();
10620         i40e_prep_for_reset(pf);
10621         rtnl_unlock();
10622
10623         wr32(hw, I40E_PFPM_APM,
10624              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10625         wr32(hw, I40E_PFPM_WUFC,
10626              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10627
10628         i40e_clear_interrupt_scheme(pf);
10629
10630         if (system_state == SYSTEM_POWER_OFF) {
10631                 pci_wake_from_d3(pdev, pf->wol_en);
10632                 pci_set_power_state(pdev, PCI_D3hot);
10633         }
10634 }
10635
10636 #ifdef CONFIG_PM
10637 /**
10638  * i40e_suspend - PCI callback for moving to D3
10639  * @pdev: PCI device information struct
10640  **/
10641 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10642 {
10643         struct i40e_pf *pf = pci_get_drvdata(pdev);
10644         struct i40e_hw *hw = &pf->hw;
10645
10646         set_bit(__I40E_SUSPENDED, &pf->state);
10647         set_bit(__I40E_DOWN, &pf->state);
10648
10649         rtnl_lock();
10650         i40e_prep_for_reset(pf);
10651         rtnl_unlock();
10652
10653         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10654         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10655
10656         pci_wake_from_d3(pdev, pf->wol_en);
10657         pci_set_power_state(pdev, PCI_D3hot);
10658
10659         return 0;
10660 }
10661
10662 /**
10663  * i40e_resume - PCI callback for waking up from D3
10664  * @pdev: PCI device information struct
10665  **/
10666 static int i40e_resume(struct pci_dev *pdev)
10667 {
10668         struct i40e_pf *pf = pci_get_drvdata(pdev);
10669         u32 err;
10670
10671         pci_set_power_state(pdev, PCI_D0);
10672         pci_restore_state(pdev);
10673         /* pci_restore_state() clears dev->state_saves, so
10674          * call pci_save_state() again to restore it.
10675          */
10676         pci_save_state(pdev);
10677
10678         err = pci_enable_device_mem(pdev);
10679         if (err) {
10680                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10681                 return err;
10682         }
10683         pci_set_master(pdev);
10684
10685         /* no wakeup events while running */
10686         pci_wake_from_d3(pdev, false);
10687
10688         /* handling the reset will rebuild the device state */
10689         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10690                 clear_bit(__I40E_DOWN, &pf->state);
10691                 rtnl_lock();
10692                 i40e_reset_and_rebuild(pf, false);
10693                 rtnl_unlock();
10694         }
10695
10696         return 0;
10697 }
10698
10699 #endif
10700 static const struct pci_error_handlers i40e_err_handler = {
10701         .error_detected = i40e_pci_error_detected,
10702         .slot_reset = i40e_pci_error_slot_reset,
10703         .resume = i40e_pci_error_resume,
10704 };
10705
10706 static struct pci_driver i40e_driver = {
10707         .name     = i40e_driver_name,
10708         .id_table = i40e_pci_tbl,
10709         .probe    = i40e_probe,
10710         .remove   = i40e_remove,
10711 #ifdef CONFIG_PM
10712         .suspend  = i40e_suspend,
10713         .resume   = i40e_resume,
10714 #endif
10715         .shutdown = i40e_shutdown,
10716         .err_handler = &i40e_err_handler,
10717         .sriov_configure = i40e_pci_sriov_configure,
10718 };
10719
10720 /**
10721  * i40e_init_module - Driver registration routine
10722  *
10723  * i40e_init_module is the first routine called when the driver is
10724  * loaded. All it does is register with the PCI subsystem.
10725  **/
10726 static int __init i40e_init_module(void)
10727 {
10728         pr_info("%s: %s - version %s\n", i40e_driver_name,
10729                 i40e_driver_string, i40e_driver_version_str);
10730         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10731
10732         i40e_dbg_init();
10733         return pci_register_driver(&i40e_driver);
10734 }
10735 module_init(i40e_init_module);
10736
10737 /**
10738  * i40e_exit_module - Driver exit cleanup routine
10739  *
10740  * i40e_exit_module is called just before the driver is removed
10741  * from memory.
10742  **/
10743 static void __exit i40e_exit_module(void)
10744 {
10745         pci_unregister_driver(&i40e_driver);
10746         i40e_dbg_exit();
10747 }
10748 module_exit(i40e_exit_module);