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 21
  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                 } else {
 220                         /* not enough, so skip over it and continue looking */
 221                         i += j;
 222                 }
 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                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 847                                    pf->stat_offsets_loaded,
 848                                    &osd->priority_xoff_rx[i],
 849                                    &nsd->priority_xoff_rx[i]);
 850
 851                 /* No new PFC xoff rx */
 852                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 853                         continue;
 854                 /* Get the TC for given priority */
 855                 tc = dcb_cfg->etscfg.prioritytable[i];
 856                 xoff[tc] = true;
 857         }
 858 }
 859
 860 /**
 861  * i40e_update_vsi_stats - Update the vsi statistics counters.
 862  * @vsi: the VSI to be updated
 863  *
 864  * There are a few instances where we store the same stat in a
 865  * couple of different structs.  This is partly because we have
 866  * the netdev stats that need to be filled out, which is slightly
 867  * different from the "eth_stats" defined by the chip and used in
 868  * VF communications.  We sort it out here.
 869  **/
 870 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 871 {
 872         struct i40e_pf *pf = vsi->back;
 873         struct rtnl_link_stats64 *ons;
 874         struct rtnl_link_stats64 *ns;   /* netdev stats */
 875         struct i40e_eth_stats *oes;
 876         struct i40e_eth_stats *es;     /* device's eth stats */
 877         u32 tx_restart, tx_busy;
 878         struct i40e_ring *p;
 879         u32 rx_page, rx_buf;
 880         u64 bytes, packets;
 881         unsigned int start;
 882         u64 tx_linearize;
 883         u64 rx_p, rx_b;
 884         u64 tx_p, tx_b;
 885         u16 q;
 886
 887         if (test_bit(__I40E_DOWN, &vsi->state) ||
 888             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 889                 return;
 890
 891         ns = i40e_get_vsi_stats_struct(vsi);
 892         ons = &vsi->net_stats_offsets;
 893         es = &vsi->eth_stats;
 894         oes = &vsi->eth_stats_offsets;
 895
 896         /* Gather up the netdev and vsi stats that the driver collects
 897          * on the fly during packet processing
 898          */
 899         rx_b = rx_p = 0;
 900         tx_b = tx_p = 0;
 901         tx_restart = tx_busy = tx_linearize = 0;
 902         rx_page = 0;
 903         rx_buf = 0;
 904         rcu_read_lock();
 905         for (q = 0; q < vsi->num_queue_pairs; q++) {
 906                 /* locate Tx ring */
 907                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 908
 909                 do {
 910                         start = u64_stats_fetch_begin_irq(&p->syncp);
 911                         packets = p->stats.packets;
 912                         bytes = p->stats.bytes;
 913                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 914                 tx_b += bytes;
 915                 tx_p += packets;
 916                 tx_restart += p->tx_stats.restart_queue;
 917                 tx_busy += p->tx_stats.tx_busy;
 918                 tx_linearize += p->tx_stats.tx_linearize;
 919
 920                 /* Rx queue is part of the same block as Tx queue */
 921                 p = &p[1];
 922                 do {
 923                         start = u64_stats_fetch_begin_irq(&p->syncp);
 924                         packets = p->stats.packets;
 925                         bytes = p->stats.bytes;
 926                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 927                 rx_b += bytes;
 928                 rx_p += packets;
 929                 rx_buf += p->rx_stats.alloc_buff_failed;
 930                 rx_page += p->rx_stats.alloc_page_failed;
 931         }
 932         rcu_read_unlock();
 933         vsi->tx_restart = tx_restart;
 934         vsi->tx_busy = tx_busy;
 935         vsi->tx_linearize = tx_linearize;
 936         vsi->rx_page_failed = rx_page;
 937         vsi->rx_buf_failed = rx_buf;
 938
 939         ns->rx_packets = rx_p;
 940         ns->rx_bytes = rx_b;
 941         ns->tx_packets = tx_p;
 942         ns->tx_bytes = tx_b;
 943
 944         /* update netdev stats from eth stats */
 945         i40e_update_eth_stats(vsi);
 946         ons->tx_errors = oes->tx_errors;
 947         ns->tx_errors = es->tx_errors;
 948         ons->multicast = oes->rx_multicast;
 949         ns->multicast = es->rx_multicast;
 950         ons->rx_dropped = oes->rx_discards;
 951         ns->rx_dropped = es->rx_discards;
 952         ons->tx_dropped = oes->tx_discards;
 953         ns->tx_dropped = es->tx_discards;
 954
 955         /* pull in a couple PF stats if this is the main vsi */
 956         if (vsi == pf->vsi[pf->lan_vsi]) {
 957                 ns->rx_crc_errors = pf->stats.crc_errors;
 958                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 959                 ns->rx_length_errors = pf->stats.rx_length_errors;
 960         }
 961 }
 962
 963 /**
 964  * i40e_update_pf_stats - Update the PF statistics counters.
 965  * @pf: the PF to be updated
 966  **/
 967 static void i40e_update_pf_stats(struct i40e_pf *pf)
 968 {
 969         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 970         struct i40e_hw_port_stats *nsd = &pf->stats;
 971         struct i40e_hw *hw = &pf->hw;
 972         u32 val;
 973         int i;
 974
 975         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 976                            I40E_GLPRT_GORCL(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 979         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 980                            I40E_GLPRT_GOTCL(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 983         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->eth.rx_discards,
 986                            &nsd->eth.rx_discards);
 987         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 988                            I40E_GLPRT_UPRCL(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->eth.rx_unicast,
 991                            &nsd->eth.rx_unicast);
 992         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 993                            I40E_GLPRT_MPRCL(hw->port),
 994                            pf->stat_offsets_loaded,
 995                            &osd->eth.rx_multicast,
 996                            &nsd->eth.rx_multicast);
 997         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 998                            I40E_GLPRT_BPRCL(hw->port),
 999                            pf->stat_offsets_loaded,
1000                            &osd->eth.rx_broadcast,
1001                            &nsd->eth.rx_broadcast);
1002         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1003                            I40E_GLPRT_UPTCL(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->eth.tx_unicast,
1006                            &nsd->eth.tx_unicast);
1007         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1008                            I40E_GLPRT_MPTCL(hw->port),
1009                            pf->stat_offsets_loaded,
1010                            &osd->eth.tx_multicast,
1011                            &nsd->eth.tx_multicast);
1012         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1013                            I40E_GLPRT_BPTCL(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->eth.tx_broadcast,
1016                            &nsd->eth.tx_broadcast);
1017
1018         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1019                            pf->stat_offsets_loaded,
1020                            &osd->tx_dropped_link_down,
1021                            &nsd->tx_dropped_link_down);
1022
1023         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->crc_errors, &nsd->crc_errors);
1026
1027         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->illegal_bytes, &nsd->illegal_bytes);
1030
1031         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->mac_local_faults,
1034                            &nsd->mac_local_faults);
1035         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->mac_remote_faults,
1038                            &nsd->mac_remote_faults);
1039
1040         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->rx_length_errors,
1043                            &nsd->rx_length_errors);
1044
1045         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->link_xon_rx, &nsd->link_xon_rx);
1048         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->link_xon_tx, &nsd->link_xon_tx);
1051         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1052         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1055
1056         for (i = 0; i < 8; i++) {
1057                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1058                                    pf->stat_offsets_loaded,
1059                                    &osd->priority_xon_rx[i],
1060                                    &nsd->priority_xon_rx[i]);
1061                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1062                                    pf->stat_offsets_loaded,
1063                                    &osd->priority_xon_tx[i],
1064                                    &nsd->priority_xon_tx[i]);
1065                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1066                                    pf->stat_offsets_loaded,
1067                                    &osd->priority_xoff_tx[i],
1068                                    &nsd->priority_xoff_tx[i]);
1069                 i40e_stat_update32(hw,
1070                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1071                                    pf->stat_offsets_loaded,
1072                                    &osd->priority_xon_2_xoff[i],
1073                                    &nsd->priority_xon_2_xoff[i]);
1074         }
1075
1076         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1077                            I40E_GLPRT_PRC64L(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_size_64, &nsd->rx_size_64);
1080         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1081                            I40E_GLPRT_PRC127L(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_size_127, &nsd->rx_size_127);
1084         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1085                            I40E_GLPRT_PRC255L(hw->port),
1086                            pf->stat_offsets_loaded,
1087                            &osd->rx_size_255, &nsd->rx_size_255);
1088         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1089                            I40E_GLPRT_PRC511L(hw->port),
1090                            pf->stat_offsets_loaded,
1091                            &osd->rx_size_511, &nsd->rx_size_511);
1092         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1093                            I40E_GLPRT_PRC1023L(hw->port),
1094                            pf->stat_offsets_loaded,
1095                            &osd->rx_size_1023, &nsd->rx_size_1023);
1096         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1097                            I40E_GLPRT_PRC1522L(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_size_1522, &nsd->rx_size_1522);
1100         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1101                            I40E_GLPRT_PRC9522L(hw->port),
1102                            pf->stat_offsets_loaded,
1103                            &osd->rx_size_big, &nsd->rx_size_big);
1104
1105         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1106                            I40E_GLPRT_PTC64L(hw->port),
1107                            pf->stat_offsets_loaded,
1108                            &osd->tx_size_64, &nsd->tx_size_64);
1109         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1110                            I40E_GLPRT_PTC127L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->tx_size_127, &nsd->tx_size_127);
1113         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1114                            I40E_GLPRT_PTC255L(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->tx_size_255, &nsd->tx_size_255);
1117         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1118                            I40E_GLPRT_PTC511L(hw->port),
1119                            pf->stat_offsets_loaded,
1120                            &osd->tx_size_511, &nsd->tx_size_511);
1121         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1122                            I40E_GLPRT_PTC1023L(hw->port),
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_size_1023, &nsd->tx_size_1023);
1125         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1126                            I40E_GLPRT_PTC1522L(hw->port),
1127                            pf->stat_offsets_loaded,
1128                            &osd->tx_size_1522, &nsd->tx_size_1522);
1129         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1130                            I40E_GLPRT_PTC9522L(hw->port),
1131                            pf->stat_offsets_loaded,
1132                            &osd->tx_size_big, &nsd->tx_size_big);
1133
1134         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->rx_undersize, &nsd->rx_undersize);
1137         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->rx_fragments, &nsd->rx_fragments);
1140         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_oversize, &nsd->rx_oversize);
1143         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->rx_jabber, &nsd->rx_jabber);
1146
1147         /* FDIR stats */
1148         i40e_stat_update32(hw,
1149                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1150                            pf->stat_offsets_loaded,
1151                            &osd->fd_atr_match, &nsd->fd_atr_match);
1152         i40e_stat_update32(hw,
1153                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1154                            pf->stat_offsets_loaded,
1155                            &osd->fd_sb_match, &nsd->fd_sb_match);
1156         i40e_stat_update32(hw,
1157                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1158                       pf->stat_offsets_loaded,
1159                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1160
1161         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1162         nsd->tx_lpi_status =
1163                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1164                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1165         nsd->rx_lpi_status =
1166                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1167                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1168         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1169                            pf->stat_offsets_loaded,
1170                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1171         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1172                            pf->stat_offsets_loaded,
1173                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1174
1175         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1176             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1177                 nsd->fd_sb_status = true;
1178         else
1179                 nsd->fd_sb_status = false;
1180
1181         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1182             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1183                 nsd->fd_atr_status = true;
1184         else
1185                 nsd->fd_atr_status = false;
1186
1187         pf->stat_offsets_loaded = true;
1188 }
1189
1190 /**
1191  * i40e_update_stats - Update the various statistics counters.
1192  * @vsi: the VSI to be updated
1193  *
1194  * Update the various stats for this VSI and its related entities.
1195  **/
1196 void i40e_update_stats(struct i40e_vsi *vsi)
1197 {
1198         struct i40e_pf *pf = vsi->back;
1199
1200         if (vsi == pf->vsi[pf->lan_vsi])
1201                 i40e_update_pf_stats(pf);
1202
1203         i40e_update_vsi_stats(vsi);
1204 #ifdef I40E_FCOE
1205         i40e_update_fcoe_stats(vsi);
1206 #endif
1207 }
1208
1209 /**
1210  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1211  * @vsi: the VSI to be searched
1212  * @macaddr: the MAC address
1213  * @vlan: the vlan
1214  * @is_vf: make sure its a VF filter, else doesn't matter
1215  * @is_netdev: make sure its a netdev filter, else doesn't matter
1216  *
1217  * Returns ptr to the filter object or NULL
1218  **/
1219 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1220                                                 u8 *macaddr, s16 vlan,
1221                                                 bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         if (!vsi || !macaddr)
1226                 return NULL;
1227
1228         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1229                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1230                     (vlan == f->vlan)    &&
1231                     (!is_vf || f->is_vf) &&
1232                     (!is_netdev || f->is_netdev))
1233                         return f;
1234         }
1235         return NULL;
1236 }
1237
1238 /**
1239  * i40e_find_mac - Find a mac addr in the macvlan filters list
1240  * @vsi: the VSI to be searched
1241  * @macaddr: the MAC address we are searching for
1242  * @is_vf: make sure its a VF filter, else doesn't matter
1243  * @is_netdev: make sure its a netdev filter, else doesn't matter
1244  *
1245  * Returns the first filter with the provided MAC address or NULL if
1246  * MAC address was not found
1247  **/
1248 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1249                                       bool is_vf, bool is_netdev)
1250 {
1251         struct i40e_mac_filter *f;
1252
1253         if (!vsi || !macaddr)
1254                 return NULL;
1255
1256         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1257                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1258                     (!is_vf || f->is_vf) &&
1259                     (!is_netdev || f->is_netdev))
1260                         return f;
1261         }
1262         return NULL;
1263 }
1264
1265 /**
1266  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1267  * @vsi: the VSI to be searched
1268  *
1269  * Returns true if VSI is in vlan mode or false otherwise
1270  **/
1271 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1272 {
1273         struct i40e_mac_filter *f;
1274
1275         /* Only -1 for all the filters denotes not in vlan mode
1276          * so we have to go through all the list in order to make sure
1277          */
1278         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1279                 if (f->vlan >= 0 || vsi->info.pvid)
1280                         return true;
1281         }
1282
1283         return false;
1284 }
1285
1286 /**
1287  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1288  * @vsi: the VSI to be searched
1289  * @macaddr: the mac address to be filtered
1290  * @is_vf: true if it is a VF
1291  * @is_netdev: true if it is a netdev
1292  *
1293  * Goes through all the macvlan filters and adds a
1294  * macvlan filter for each unique vlan that already exists
1295  *
1296  * Returns first filter found on success, else NULL
1297  **/
1298 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1299                                              bool is_vf, bool is_netdev)
1300 {
1301         struct i40e_mac_filter *f;
1302
1303         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1304                 if (vsi->info.pvid)
1305                         f->vlan = le16_to_cpu(vsi->info.pvid);
1306                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1307                                       is_vf, is_netdev)) {
1308                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1309                                              is_vf, is_netdev))
1310                                 return NULL;
1311                 }
1312         }
1313
1314         return list_first_entry_or_null(&vsi->mac_filter_list,
1315                                         struct i40e_mac_filter, list);
1316 }
1317
1318 /**
1319  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1320  * @vsi: the PF Main VSI - inappropriate for any other VSI
1321  * @macaddr: the MAC address
1322  *
1323  * Some older firmware configurations set up a default promiscuous VLAN
1324  * filter that needs to be removed.
1325  **/
1326 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1327 {
1328         struct i40e_aqc_remove_macvlan_element_data element;
1329         struct i40e_pf *pf = vsi->back;
1330         i40e_status ret;
1331
1332         /* Only appropriate for the PF main VSI */
1333         if (vsi->type != I40E_VSI_MAIN)
1334                 return -EINVAL;
1335
1336         memset(&element, 0, sizeof(element));
1337         ether_addr_copy(element.mac_addr, macaddr);
1338         element.vlan_tag = 0;
1339         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1340                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1341         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1342         if (ret)
1343                 return -ENOENT;
1344
1345         return 0;
1346 }
1347
1348 /**
1349  * i40e_add_filter - Add a mac/vlan filter to the VSI
1350  * @vsi: the VSI to be searched
1351  * @macaddr: the MAC address
1352  * @vlan: the vlan
1353  * @is_vf: make sure its a VF filter, else doesn't matter
1354  * @is_netdev: make sure its a netdev filter, else doesn't matter
1355  *
1356  * Returns ptr to the filter object or NULL when no memory available.
1357  **/
1358 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1359                                         u8 *macaddr, s16 vlan,
1360                                         bool is_vf, bool is_netdev)
1361 {
1362         struct i40e_mac_filter *f;
1363
1364         if (!vsi || !macaddr)
1365                 return NULL;
1366
1367         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1368         if (!f) {
1369                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1370                 if (!f)
1371                         goto add_filter_out;
1372
1373                 ether_addr_copy(f->macaddr, macaddr);
1374                 f->vlan = vlan;
1375                 f->changed = true;
1376
1377                 INIT_LIST_HEAD(&f->list);
1378                 list_add(&f->list, &vsi->mac_filter_list);
1379         }
1380
1381         /* increment counter and add a new flag if needed */
1382         if (is_vf) {
1383                 if (!f->is_vf) {
1384                         f->is_vf = true;
1385                         f->counter++;
1386                 }
1387         } else if (is_netdev) {
1388                 if (!f->is_netdev) {
1389                         f->is_netdev = true;
1390                         f->counter++;
1391                 }
1392         } else {
1393                 f->counter++;
1394         }
1395
1396         /* changed tells sync_filters_subtask to
1397          * push the filter down to the firmware
1398          */
1399         if (f->changed) {
1400                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1401                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1402         }
1403
1404 add_filter_out:
1405         return f;
1406 }
1407
1408 /**
1409  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1410  * @vsi: the VSI to be searched
1411  * @macaddr: the MAC address
1412  * @vlan: the vlan
1413  * @is_vf: make sure it's a VF filter, else doesn't matter
1414  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1415  **/
1416 void i40e_del_filter(struct i40e_vsi *vsi,
1417                      u8 *macaddr, s16 vlan,
1418                      bool is_vf, bool is_netdev)
1419 {
1420         struct i40e_mac_filter *f;
1421
1422         if (!vsi || !macaddr)
1423                 return;
1424
1425         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1426         if (!f || f->counter == 0)
1427                 return;
1428
1429         if (is_vf) {
1430                 if (f->is_vf) {
1431                         f->is_vf = false;
1432                         f->counter--;
1433                 }
1434         } else if (is_netdev) {
1435                 if (f->is_netdev) {
1436                         f->is_netdev = false;
1437                         f->counter--;
1438                 }
1439         } else {
1440                 /* make sure we don't remove a filter in use by VF or netdev */
1441                 int min_f = 0;
1442                 min_f += (f->is_vf ? 1 : 0);
1443                 min_f += (f->is_netdev ? 1 : 0);
1444
1445                 if (f->counter > min_f)
1446                         f->counter--;
1447         }
1448
1449         /* counter == 0 tells sync_filters_subtask to
1450          * remove the filter from the firmware's list
1451          */
1452         if (f->counter == 0) {
1453                 f->changed = true;
1454                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1455                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1456         }
1457 }
1458
1459 /**
1460  * i40e_set_mac - NDO callback to set mac address
1461  * @netdev: network interface device structure
1462  * @p: pointer to an address structure
1463  *
1464  * Returns 0 on success, negative on failure
1465  **/
1466 #ifdef I40E_FCOE
1467 int i40e_set_mac(struct net_device *netdev, void *p)
1468 #else
1469 static int i40e_set_mac(struct net_device *netdev, void *p)
1470 #endif
1471 {
1472         struct i40e_netdev_priv *np = netdev_priv(netdev);
1473         struct i40e_vsi *vsi = np->vsi;
1474         struct i40e_pf *pf = vsi->back;
1475         struct i40e_hw *hw = &pf->hw;
1476         struct sockaddr *addr = p;
1477         struct i40e_mac_filter *f;
1478
1479         if (!is_valid_ether_addr(addr->sa_data))
1480                 return -EADDRNOTAVAIL;
1481
1482         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1483                 netdev_info(netdev, "already using mac address %pM\n",
1484                             addr->sa_data);
1485                 return 0;
1486         }
1487
1488         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1489             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1490                 return -EADDRNOTAVAIL;
1491
1492         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1493                 netdev_info(netdev, "returning to hw mac address %pM\n",
1494                             hw->mac.addr);
1495         else
1496                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1497
1498         if (vsi->type == I40E_VSI_MAIN) {
1499                 i40e_status ret;
1500                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1501                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1502                                                 addr->sa_data, NULL);
1503                 if (ret) {
1504                         netdev_info(netdev,
1505                                     "Addr change for Main VSI failed: %d\n",
1506                                     ret);
1507                         return -EADDRNOTAVAIL;
1508                 }
1509         }
1510
1511         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1512                 struct i40e_aqc_remove_macvlan_element_data element;
1513
1514                 memset(&element, 0, sizeof(element));
1515                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1516                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1517                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1518         } else {
1519                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1520                                 false, false);
1521         }
1522
1523         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1524                 struct i40e_aqc_add_macvlan_element_data element;
1525
1526                 memset(&element, 0, sizeof(element));
1527                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1528                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1529                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1530         } else {
1531                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1532                                     false, false);
1533                 if (f)
1534                         f->is_laa = true;
1535         }
1536
1537         i40e_sync_vsi_filters(vsi, false);
1538         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1539
1540         return 0;
1541 }
1542
1543 /**
1544  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1545  * @vsi: the VSI being setup
1546  * @ctxt: VSI context structure
1547  * @enabled_tc: Enabled TCs bitmap
1548  * @is_add: True if called before Add VSI
1549  *
1550  * Setup VSI queue mapping for enabled traffic classes.
1551  **/
1552 #ifdef I40E_FCOE
1553 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1554                               struct i40e_vsi_context *ctxt,
1555                               u8 enabled_tc,
1556                               bool is_add)
1557 #else
1558 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1559                                      struct i40e_vsi_context *ctxt,
1560                                      u8 enabled_tc,
1561                                      bool is_add)
1562 #endif
1563 {
1564         struct i40e_pf *pf = vsi->back;
1565         u16 sections = 0;
1566         u8 netdev_tc = 0;
1567         u16 numtc = 0;
1568         u16 qcount;
1569         u8 offset;
1570         u16 qmap;
1571         int i;
1572         u16 num_tc_qps = 0;
1573
1574         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1575         offset = 0;
1576
1577         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1578                 /* Find numtc from enabled TC bitmap */
1579                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1580                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1581                                 numtc++;
1582                 }
1583                 if (!numtc) {
1584                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1585                         numtc = 1;
1586                 }
1587         } else {
1588                 /* At least TC0 is enabled in case of non-DCB case */
1589                 numtc = 1;
1590         }
1591
1592         vsi->tc_config.numtc = numtc;
1593         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1594         /* Number of queues per enabled TC */
1595         /* In MFP case we can have a much lower count of MSIx
1596          * vectors available and so we need to lower the used
1597          * q count.
1598          */
1599         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1600                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1601         else
1602                 qcount = vsi->alloc_queue_pairs;
1603         num_tc_qps = qcount / numtc;
1604         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1605
1606         /* Setup queue offset/count for all TCs for given VSI */
1607         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1608                 /* See if the given TC is enabled for the given VSI */
1609                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1610                         /* TC is enabled */
1611                         int pow, num_qps;
1612
1613                         switch (vsi->type) {
1614                         case I40E_VSI_MAIN:
1615                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1616                                 break;
1617 #ifdef I40E_FCOE
1618                         case I40E_VSI_FCOE:
1619                                 qcount = num_tc_qps;
1620                                 break;
1621 #endif
1622                         case I40E_VSI_FDIR:
1623                         case I40E_VSI_SRIOV:
1624                         case I40E_VSI_VMDQ2:
1625                         default:
1626                                 qcount = num_tc_qps;
1627                                 WARN_ON(i != 0);
1628                                 break;
1629                         }
1630                         vsi->tc_config.tc_info[i].qoffset = offset;
1631                         vsi->tc_config.tc_info[i].qcount = qcount;
1632
1633                         /* find the next higher power-of-2 of num queue pairs */
1634                         num_qps = qcount;
1635                         pow = 0;
1636                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1637                                 pow++;
1638                                 num_qps >>= 1;
1639                         }
1640
1641                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1642                         qmap =
1643                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1644                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1645
1646                         offset += qcount;
1647                 } else {
1648                         /* TC is not enabled so set the offset to
1649                          * default queue and allocate one queue
1650                          * for the given TC.
1651                          */
1652                         vsi->tc_config.tc_info[i].qoffset = 0;
1653                         vsi->tc_config.tc_info[i].qcount = 1;
1654                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1655
1656                         qmap = 0;
1657                 }
1658                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1659         }
1660
1661         /* Set actual Tx/Rx queue pairs */
1662         vsi->num_queue_pairs = offset;
1663         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1664                 if (vsi->req_queue_pairs > 0)
1665                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1666                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1667                         vsi->num_queue_pairs = pf->num_lan_msix;
1668         }
1669
1670         /* Scheduler section valid can only be set for ADD VSI */
1671         if (is_add) {
1672                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1673
1674                 ctxt->info.up_enable_bits = enabled_tc;
1675         }
1676         if (vsi->type == I40E_VSI_SRIOV) {
1677                 ctxt->info.mapping_flags |=
1678                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1679                 for (i = 0; i < vsi->num_queue_pairs; i++)
1680                         ctxt->info.queue_mapping[i] =
1681                                                cpu_to_le16(vsi->base_queue + i);
1682         } else {
1683                 ctxt->info.mapping_flags |=
1684                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1685                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1686         }
1687         ctxt->info.valid_sections |= cpu_to_le16(sections);
1688 }
1689
1690 /**
1691  * i40e_set_rx_mode - NDO callback to set the netdev filters
1692  * @netdev: network interface device structure
1693  **/
1694 #ifdef I40E_FCOE
1695 void i40e_set_rx_mode(struct net_device *netdev)
1696 #else
1697 static void i40e_set_rx_mode(struct net_device *netdev)
1698 #endif
1699 {
1700         struct i40e_netdev_priv *np = netdev_priv(netdev);
1701         struct i40e_mac_filter *f, *ftmp;
1702         struct i40e_vsi *vsi = np->vsi;
1703         struct netdev_hw_addr *uca;
1704         struct netdev_hw_addr *mca;
1705         struct netdev_hw_addr *ha;
1706
1707         /* add addr if not already in the filter list */
1708         netdev_for_each_uc_addr(uca, netdev) {
1709                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1710                         if (i40e_is_vsi_in_vlan(vsi))
1711                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1712                                                      false, true);
1713                         else
1714                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1715                                                 false, true);
1716                 }
1717         }
1718
1719         netdev_for_each_mc_addr(mca, netdev) {
1720                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1721                         if (i40e_is_vsi_in_vlan(vsi))
1722                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1723                                                      false, true);
1724                         else
1725                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1726                                                 false, true);
1727                 }
1728         }
1729
1730         /* remove filter if not in netdev list */
1731         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1732
1733                 if (!f->is_netdev)
1734                         continue;
1735
1736                 netdev_for_each_mc_addr(mca, netdev)
1737                         if (ether_addr_equal(mca->addr, f->macaddr))
1738                                 goto bottom_of_search_loop;
1739
1740                 netdev_for_each_uc_addr(uca, netdev)
1741                         if (ether_addr_equal(uca->addr, f->macaddr))
1742                                 goto bottom_of_search_loop;
1743
1744                 for_each_dev_addr(netdev, ha)
1745                         if (ether_addr_equal(ha->addr, f->macaddr))
1746                                 goto bottom_of_search_loop;
1747
1748                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1749                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1750
1751 bottom_of_search_loop:
1752                 continue;
1753         }
1754
1755         /* check for other flag changes */
1756         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1757                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1758                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1759         }
1760 }
1761
1762 /**
1763  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1764  * @vsi: ptr to the VSI
1765  * @grab_rtnl: whether RTNL needs to be grabbed
1766  *
1767  * Push any outstanding VSI filter changes through the AdminQ.
1768  *
1769  * Returns 0 or error value
1770  **/
1771 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1772 {
1773         struct i40e_mac_filter *f, *ftmp;
1774         bool promisc_forced_on = false;
1775         bool add_happened = false;
1776         int filter_list_len = 0;
1777         u32 changed_flags = 0;
1778         i40e_status ret = 0;
1779         struct i40e_pf *pf;
1780         int num_add = 0;
1781         int num_del = 0;
1782         int aq_err = 0;
1783         u16 cmd_flags;
1784
1785         /* empty array typed pointers, kcalloc later */
1786         struct i40e_aqc_add_macvlan_element_data *add_list;
1787         struct i40e_aqc_remove_macvlan_element_data *del_list;
1788
1789         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1790                 usleep_range(1000, 2000);
1791         pf = vsi->back;
1792
1793         if (vsi->netdev) {
1794                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1795                 vsi->current_netdev_flags = vsi->netdev->flags;
1796         }
1797
1798         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1799                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1800
1801                 filter_list_len = pf->hw.aq.asq_buf_size /
1802                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1803                 del_list = kcalloc(filter_list_len,
1804                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1805                             GFP_KERNEL);
1806                 if (!del_list)
1807                         return -ENOMEM;
1808
1809                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1810                         if (!f->changed)
1811                                 continue;
1812
1813                         if (f->counter != 0)
1814                                 continue;
1815                         f->changed = false;
1816                         cmd_flags = 0;
1817
1818                         /* add to delete list */
1819                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1820                         del_list[num_del].vlan_tag =
1821                                 cpu_to_le16((u16)(f->vlan ==
1822                                             I40E_VLAN_ANY ? 0 : f->vlan));
1823
1824                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1825                         del_list[num_del].flags = cmd_flags;
1826                         num_del++;
1827
1828                         /* unlink from filter list */
1829                         list_del(&f->list);
1830                         kfree(f);
1831
1832                         /* flush a full buffer */
1833                         if (num_del == filter_list_len) {
1834                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1835                                                   vsi->seid, del_list, num_del,
1836                                                   NULL);
1837                                 aq_err = pf->hw.aq.asq_last_status;
1838                                 num_del = 0;
1839                                 memset(del_list, 0, sizeof(*del_list));
1840
1841                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1842                                         dev_info(&pf->pdev->dev,
1843                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1844                                                  i40e_stat_str(&pf->hw, ret),
1845                                                  i40e_aq_str(&pf->hw, aq_err));
1846                         }
1847                 }
1848                 if (num_del) {
1849                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1850                                                      del_list, num_del, NULL);
1851                         aq_err = pf->hw.aq.asq_last_status;
1852                         num_del = 0;
1853
1854                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1855                                 dev_info(&pf->pdev->dev,
1856                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1857                                          i40e_stat_str(&pf->hw, ret),
1858                                          i40e_aq_str(&pf->hw, aq_err));
1859                 }
1860
1861                 kfree(del_list);
1862                 del_list = NULL;
1863
1864                 /* do all the adds now */
1865                 filter_list_len = pf->hw.aq.asq_buf_size /
1866                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1867                 add_list = kcalloc(filter_list_len,
1868                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1869                                GFP_KERNEL);
1870                 if (!add_list)
1871                         return -ENOMEM;
1872
1873                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1874                         if (!f->changed)
1875                                 continue;
1876
1877                         if (f->counter == 0)
1878                                 continue;
1879                         f->changed = false;
1880                         add_happened = true;
1881                         cmd_flags = 0;
1882
1883                         /* add to add array */
1884                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1885                         add_list[num_add].vlan_tag =
1886                                 cpu_to_le16(
1887                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1888                         add_list[num_add].queue_number = 0;
1889
1890                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1891                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1892                         num_add++;
1893
1894                         /* flush a full buffer */
1895                         if (num_add == filter_list_len) {
1896                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1897                                                           add_list, num_add,
1898                                                           NULL);
1899                                 aq_err = pf->hw.aq.asq_last_status;
1900                                 num_add = 0;
1901
1902                                 if (ret)
1903                                         break;
1904                                 memset(add_list, 0, sizeof(*add_list));
1905                         }
1906                 }
1907                 if (num_add) {
1908                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1909                                                   add_list, num_add, NULL);
1910                         aq_err = pf->hw.aq.asq_last_status;
1911                         num_add = 0;
1912                 }
1913                 kfree(add_list);
1914                 add_list = NULL;
1915
1916                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1917                         dev_info(&pf->pdev->dev,
1918                                  "add filter failed, err %s aq_err %s\n",
1919                                  i40e_stat_str(&pf->hw, ret),
1920                                  i40e_aq_str(&pf->hw, aq_err));
1921                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1922                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1923                                       &vsi->state)) {
1924                                 promisc_forced_on = true;
1925                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1926                                         &vsi->state);
1927                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1928                         }
1929                 }
1930         }
1931
1932         /* check for changes in promiscuous modes */
1933         if (changed_flags & IFF_ALLMULTI) {
1934                 bool cur_multipromisc;
1935                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1936                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1937                                                             vsi->seid,
1938                                                             cur_multipromisc,
1939                                                             NULL);
1940                 if (ret)
1941                         dev_info(&pf->pdev->dev,
1942                                  "set multi promisc failed, err %s aq_err %s\n",
1943                                  i40e_stat_str(&pf->hw, ret),
1944                                  i40e_aq_str(&pf->hw,
1945                                              pf->hw.aq.asq_last_status));
1946         }
1947         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1948                 bool cur_promisc;
1949                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1950                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1951                                         &vsi->state));
1952                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1953                         /* set defport ON for Main VSI instead of true promisc
1954                          * this way we will get all unicast/multicast and VLAN
1955                          * promisc behavior but will not get VF or VMDq traffic
1956                          * replicated on the Main VSI.
1957                          */
1958                         if (pf->cur_promisc != cur_promisc) {
1959                                 pf->cur_promisc = cur_promisc;
1960                                 if (grab_rtnl)
1961                                         i40e_do_reset_safe(pf,
1962                                                 BIT(__I40E_PF_RESET_REQUESTED));
1963                                 else
1964                                         i40e_do_reset(pf,
1965                                                 BIT(__I40E_PF_RESET_REQUESTED));
1966                         }
1967                 } else {
1968                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1969                                                           &vsi->back->hw,
1970                                                           vsi->seid,
1971                                                           cur_promisc, NULL);
1972                         if (ret)
1973                                 dev_info(&pf->pdev->dev,
1974                                          "set unicast promisc failed, err %d, aq_err %d\n",
1975                                          ret, pf->hw.aq.asq_last_status);
1976                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1977                                                           &vsi->back->hw,
1978                                                           vsi->seid,
1979                                                           cur_promisc, NULL);
1980                         if (ret)
1981                                 dev_info(&pf->pdev->dev,
1982                                          "set multicast promisc failed, err %d, aq_err %d\n",
1983                                          ret, pf->hw.aq.asq_last_status);
1984                 }
1985                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1986                                                 vsi->seid,
1987                                                 cur_promisc, NULL);
1988                 if (ret)
1989                         dev_info(&pf->pdev->dev,
1990                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1991                                  i40e_stat_str(&pf->hw, ret),
1992                                  i40e_aq_str(&pf->hw,
1993                                              pf->hw.aq.asq_last_status));
1994         }
1995
1996         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1997         return 0;
1998 }
1999
2000 /**
2001  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2002  * @pf: board private structure
2003  **/
2004 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2005 {
2006         int v;
2007
2008         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2009                 return;
2010         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2011
2012         for (v = 0; v < pf->num_alloc_vsi; v++) {
2013                 if (pf->vsi[v] &&
2014                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2015                         i40e_sync_vsi_filters(pf->vsi[v], true);
2016         }
2017 }
2018
2019 /**
2020  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2021  * @netdev: network interface device structure
2022  * @new_mtu: new value for maximum frame size
2023  *
2024  * Returns 0 on success, negative on failure
2025  **/
2026 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2027 {
2028         struct i40e_netdev_priv *np = netdev_priv(netdev);
2029         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2030         struct i40e_vsi *vsi = np->vsi;
2031
2032         /* MTU < 68 is an error and causes problems on some kernels */
2033         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2034                 return -EINVAL;
2035
2036         netdev_info(netdev, "changing MTU from %d to %d\n",
2037                     netdev->mtu, new_mtu);
2038         netdev->mtu = new_mtu;
2039         if (netif_running(netdev))
2040                 i40e_vsi_reinit_locked(vsi);
2041
2042         return 0;
2043 }
2044
2045 /**
2046  * i40e_ioctl - Access the hwtstamp interface
2047  * @netdev: network interface device structure
2048  * @ifr: interface request data
2049  * @cmd: ioctl command
2050  **/
2051 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2052 {
2053         struct i40e_netdev_priv *np = netdev_priv(netdev);
2054         struct i40e_pf *pf = np->vsi->back;
2055
2056         switch (cmd) {
2057         case SIOCGHWTSTAMP:
2058                 return i40e_ptp_get_ts_config(pf, ifr);
2059         case SIOCSHWTSTAMP:
2060                 return i40e_ptp_set_ts_config(pf, ifr);
2061         default:
2062                 return -EOPNOTSUPP;
2063         }
2064 }
2065
2066 /**
2067  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2068  * @vsi: the vsi being adjusted
2069  **/
2070 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2071 {
2072         struct i40e_vsi_context ctxt;
2073         i40e_status ret;
2074
2075         if ((vsi->info.valid_sections &
2076              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2077             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2078                 return;  /* already enabled */
2079
2080         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2081         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2082                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2083
2084         ctxt.seid = vsi->seid;
2085         ctxt.info = vsi->info;
2086         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2087         if (ret) {
2088                 dev_info(&vsi->back->pdev->dev,
2089                          "update vlan stripping failed, err %s aq_err %s\n",
2090                          i40e_stat_str(&vsi->back->hw, ret),
2091                          i40e_aq_str(&vsi->back->hw,
2092                                      vsi->back->hw.aq.asq_last_status));
2093         }
2094 }
2095
2096 /**
2097  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2098  * @vsi: the vsi being adjusted
2099  **/
2100 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2101 {
2102         struct i40e_vsi_context ctxt;
2103         i40e_status ret;
2104
2105         if ((vsi->info.valid_sections &
2106              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2107             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2108              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2109                 return;  /* already disabled */
2110
2111         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2112         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2113                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2114
2115         ctxt.seid = vsi->seid;
2116         ctxt.info = vsi->info;
2117         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2118         if (ret) {
2119                 dev_info(&vsi->back->pdev->dev,
2120                          "update vlan stripping failed, err %s aq_err %s\n",
2121                          i40e_stat_str(&vsi->back->hw, ret),
2122                          i40e_aq_str(&vsi->back->hw,
2123                                      vsi->back->hw.aq.asq_last_status));
2124         }
2125 }
2126
2127 /**
2128  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2129  * @netdev: network interface to be adjusted
2130  * @features: netdev features to test if VLAN offload is enabled or not
2131  **/
2132 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2133 {
2134         struct i40e_netdev_priv *np = netdev_priv(netdev);
2135         struct i40e_vsi *vsi = np->vsi;
2136
2137         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2138                 i40e_vlan_stripping_enable(vsi);
2139         else
2140                 i40e_vlan_stripping_disable(vsi);
2141 }
2142
2143 /**
2144  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2145  * @vsi: the vsi being configured
2146  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2147  **/
2148 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2149 {
2150         struct i40e_mac_filter *f, *add_f;
2151         bool is_netdev, is_vf;
2152
2153         is_vf = (vsi->type == I40E_VSI_SRIOV);
2154         is_netdev = !!(vsi->netdev);
2155
2156         if (is_netdev) {
2157                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2158                                         is_vf, is_netdev);
2159                 if (!add_f) {
2160                         dev_info(&vsi->back->pdev->dev,
2161                                  "Could not add vlan filter %d for %pM\n",
2162                                  vid, vsi->netdev->dev_addr);
2163                         return -ENOMEM;
2164                 }
2165         }
2166
2167         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2168                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2169                 if (!add_f) {
2170                         dev_info(&vsi->back->pdev->dev,
2171                                  "Could not add vlan filter %d for %pM\n",
2172                                  vid, f->macaddr);
2173                         return -ENOMEM;
2174                 }
2175         }
2176
2177         /* Now if we add a vlan tag, make sure to check if it is the first
2178          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2179          * with 0, so we now accept untagged and specified tagged traffic
2180          * (and not any taged and untagged)
2181          */
2182         if (vid > 0) {
2183                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2184                                                   I40E_VLAN_ANY,
2185                                                   is_vf, is_netdev)) {
2186                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2187                                         I40E_VLAN_ANY, is_vf, is_netdev);
2188                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2189                                                 is_vf, is_netdev);
2190                         if (!add_f) {
2191                                 dev_info(&vsi->back->pdev->dev,
2192                                          "Could not add filter 0 for %pM\n",
2193                                          vsi->netdev->dev_addr);
2194                                 return -ENOMEM;
2195                         }
2196                 }
2197         }
2198
2199         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2200         if (vid > 0 && !vsi->info.pvid) {
2201                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2202                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2203                                              is_vf, is_netdev)) {
2204                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2205                                                 is_vf, is_netdev);
2206                                 add_f = i40e_add_filter(vsi, f->macaddr,
2207                                                         0, is_vf, is_netdev);
2208                                 if (!add_f) {
2209                                         dev_info(&vsi->back->pdev->dev,
2210                                                  "Could not add filter 0 for %pM\n",
2211                                                  f->macaddr);
2212                                         return -ENOMEM;
2213                                 }
2214                         }
2215                 }
2216         }
2217
2218         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2219             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2220                 return 0;
2221
2222         return i40e_sync_vsi_filters(vsi, false);
2223 }
2224
2225 /**
2226  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2227  * @vsi: the vsi being configured
2228  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2229  *
2230  * Return: 0 on success or negative otherwise
2231  **/
2232 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2233 {
2234         struct net_device *netdev = vsi->netdev;
2235         struct i40e_mac_filter *f, *add_f;
2236         bool is_vf, is_netdev;
2237         int filter_count = 0;
2238
2239         is_vf = (vsi->type == I40E_VSI_SRIOV);
2240         is_netdev = !!(netdev);
2241
2242         if (is_netdev)
2243                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2244
2245         list_for_each_entry(f, &vsi->mac_filter_list, list)
2246                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2247
2248         /* go through all the filters for this VSI and if there is only
2249          * vid == 0 it means there are no other filters, so vid 0 must
2250          * be replaced with -1. This signifies that we should from now
2251          * on accept any traffic (with any tag present, or untagged)
2252          */
2253         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2254                 if (is_netdev) {
2255                         if (f->vlan &&
2256                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2257                                 filter_count++;
2258                 }
2259
2260                 if (f->vlan)
2261                         filter_count++;
2262         }
2263
2264         if (!filter_count && is_netdev) {
2265                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2266                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2267                                     is_vf, is_netdev);
2268                 if (!f) {
2269                         dev_info(&vsi->back->pdev->dev,
2270                                  "Could not add filter %d for %pM\n",
2271                                  I40E_VLAN_ANY, netdev->dev_addr);
2272                         return -ENOMEM;
2273                 }
2274         }
2275
2276         if (!filter_count) {
2277                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2278                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2279                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2280                                             is_vf, is_netdev);
2281                         if (!add_f) {
2282                                 dev_info(&vsi->back->pdev->dev,
2283                                          "Could not add filter %d for %pM\n",
2284                                          I40E_VLAN_ANY, f->macaddr);
2285                                 return -ENOMEM;
2286                         }
2287                 }
2288         }
2289
2290         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2291             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2292                 return 0;
2293
2294         return i40e_sync_vsi_filters(vsi, false);
2295 }
2296
2297 /**
2298  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2299  * @netdev: network interface to be adjusted
2300  * @vid: vlan id to be added
2301  *
2302  * net_device_ops implementation for adding vlan ids
2303  **/
2304 #ifdef I40E_FCOE
2305 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2306                          __always_unused __be16 proto, u16 vid)
2307 #else
2308 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2309                                 __always_unused __be16 proto, u16 vid)
2310 #endif
2311 {
2312         struct i40e_netdev_priv *np = netdev_priv(netdev);
2313         struct i40e_vsi *vsi = np->vsi;
2314         int ret = 0;
2315
2316         if (vid > 4095)
2317                 return -EINVAL;
2318
2319         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2320
2321         /* If the network stack called us with vid = 0 then
2322          * it is asking to receive priority tagged packets with
2323          * vlan id 0.  Our HW receives them by default when configured
2324          * to receive untagged packets so there is no need to add an
2325          * extra filter for vlan 0 tagged packets.
2326          */
2327         if (vid)
2328                 ret = i40e_vsi_add_vlan(vsi, vid);
2329
2330         if (!ret && (vid < VLAN_N_VID))
2331                 set_bit(vid, vsi->active_vlans);
2332
2333         return ret;
2334 }
2335
2336 /**
2337  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2338  * @netdev: network interface to be adjusted
2339  * @vid: vlan id to be removed
2340  *
2341  * net_device_ops implementation for removing vlan ids
2342  **/
2343 #ifdef I40E_FCOE
2344 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2345                           __always_unused __be16 proto, u16 vid)
2346 #else
2347 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2348                                  __always_unused __be16 proto, u16 vid)
2349 #endif
2350 {
2351         struct i40e_netdev_priv *np = netdev_priv(netdev);
2352         struct i40e_vsi *vsi = np->vsi;
2353
2354         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2355
2356         /* return code is ignored as there is nothing a user
2357          * can do about failure to remove and a log message was
2358          * already printed from the other function
2359          */
2360         i40e_vsi_kill_vlan(vsi, vid);
2361
2362         clear_bit(vid, vsi->active_vlans);
2363
2364         return 0;
2365 }
2366
2367 /**
2368  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2369  * @vsi: the vsi being brought back up
2370  **/
2371 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2372 {
2373         u16 vid;
2374
2375         if (!vsi->netdev)
2376                 return;
2377
2378         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2379
2380         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2381                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2382                                      vid);
2383 }
2384
2385 /**
2386  * i40e_vsi_add_pvid - Add pvid for the VSI
2387  * @vsi: the vsi being adjusted
2388  * @vid: the vlan id to set as a PVID
2389  **/
2390 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2391 {
2392         struct i40e_vsi_context ctxt;
2393         i40e_status ret;
2394
2395         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2396         vsi->info.pvid = cpu_to_le16(vid);
2397         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2398                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2399                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2400
2401         ctxt.seid = vsi->seid;
2402         ctxt.info = vsi->info;
2403         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2404         if (ret) {
2405                 dev_info(&vsi->back->pdev->dev,
2406                          "add pvid failed, err %s aq_err %s\n",
2407                          i40e_stat_str(&vsi->back->hw, ret),
2408                          i40e_aq_str(&vsi->back->hw,
2409                                      vsi->back->hw.aq.asq_last_status));
2410                 return -ENOENT;
2411         }
2412
2413         return 0;
2414 }
2415
2416 /**
2417  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2418  * @vsi: the vsi being adjusted
2419  *
2420  * Just use the vlan_rx_register() service to put it back to normal
2421  **/
2422 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2423 {
2424         i40e_vlan_stripping_disable(vsi);
2425
2426         vsi->info.pvid = 0;
2427 }
2428
2429 /**
2430  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2431  * @vsi: ptr to the VSI
2432  *
2433  * If this function returns with an error, then it's possible one or
2434  * more of the rings is populated (while the rest are not).  It is the
2435  * callers duty to clean those orphaned rings.
2436  *
2437  * Return 0 on success, negative on failure
2438  **/
2439 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2440 {
2441         int i, err = 0;
2442
2443         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2444                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2445
2446         return err;
2447 }
2448
2449 /**
2450  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2451  * @vsi: ptr to the VSI
2452  *
2453  * Free VSI's transmit software resources
2454  **/
2455 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2456 {
2457         int i;
2458
2459         if (!vsi->tx_rings)
2460                 return;
2461
2462         for (i = 0; i < vsi->num_queue_pairs; i++)
2463                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2464                         i40e_free_tx_resources(vsi->tx_rings[i]);
2465 }
2466
2467 /**
2468  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2469  * @vsi: ptr to the VSI
2470  *
2471  * If this function returns with an error, then it's possible one or
2472  * more of the rings is populated (while the rest are not).  It is the
2473  * callers duty to clean those orphaned rings.
2474  *
2475  * Return 0 on success, negative on failure
2476  **/
2477 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2478 {
2479         int i, err = 0;
2480
2481         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2482                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2483 #ifdef I40E_FCOE
2484         i40e_fcoe_setup_ddp_resources(vsi);
2485 #endif
2486         return err;
2487 }
2488
2489 /**
2490  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2491  * @vsi: ptr to the VSI
2492  *
2493  * Free all receive software resources
2494  **/
2495 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2496 {
2497         int i;
2498
2499         if (!vsi->rx_rings)
2500                 return;
2501
2502         for (i = 0; i < vsi->num_queue_pairs; i++)
2503                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2504                         i40e_free_rx_resources(vsi->rx_rings[i]);
2505 #ifdef I40E_FCOE
2506         i40e_fcoe_free_ddp_resources(vsi);
2507 #endif
2508 }
2509
2510 /**
2511  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2512  * @ring: The Tx ring to configure
2513  *
2514  * This enables/disables XPS for a given Tx descriptor ring
2515  * based on the TCs enabled for the VSI that ring belongs to.
2516  **/
2517 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2518 {
2519         struct i40e_vsi *vsi = ring->vsi;
2520         cpumask_var_t mask;
2521
2522         if (!ring->q_vector || !ring->netdev)
2523                 return;
2524
2525         /* Single TC mode enable XPS */
2526         if (vsi->tc_config.numtc <= 1) {
2527                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2528                         netif_set_xps_queue(ring->netdev,
2529                                             &ring->q_vector->affinity_mask,
2530                                             ring->queue_index);
2531         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2532                 /* Disable XPS to allow selection based on TC */
2533                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2534                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2535                 free_cpumask_var(mask);
2536         }
2537 }
2538
2539 /**
2540  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2541  * @ring: The Tx ring to configure
2542  *
2543  * Configure the Tx descriptor ring in the HMC context.
2544  **/
2545 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2546 {
2547         struct i40e_vsi *vsi = ring->vsi;
2548         u16 pf_q = vsi->base_queue + ring->queue_index;
2549         struct i40e_hw *hw = &vsi->back->hw;
2550         struct i40e_hmc_obj_txq tx_ctx;
2551         i40e_status err = 0;
2552         u32 qtx_ctl = 0;
2553
2554         /* some ATR related tx ring init */
2555         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2556                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2557                 ring->atr_count = 0;
2558         } else {
2559                 ring->atr_sample_rate = 0;
2560         }
2561
2562         /* configure XPS */
2563         i40e_config_xps_tx_ring(ring);
2564
2565         /* clear the context structure first */
2566         memset(&tx_ctx, 0, sizeof(tx_ctx));
2567
2568         tx_ctx.new_context = 1;
2569         tx_ctx.base = (ring->dma / 128);
2570         tx_ctx.qlen = ring->count;
2571         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2572                                                I40E_FLAG_FD_ATR_ENABLED));
2573 #ifdef I40E_FCOE
2574         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2575 #endif
2576         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2577         /* FDIR VSI tx ring can still use RS bit and writebacks */
2578         if (vsi->type != I40E_VSI_FDIR)
2579                 tx_ctx.head_wb_ena = 1;
2580         tx_ctx.head_wb_addr = ring->dma +
2581                               (ring->count * sizeof(struct i40e_tx_desc));
2582
2583         /* As part of VSI creation/update, FW allocates certain
2584          * Tx arbitration queue sets for each TC enabled for
2585          * the VSI. The FW returns the handles to these queue
2586          * sets as part of the response buffer to Add VSI,
2587          * Update VSI, etc. AQ commands. It is expected that
2588          * these queue set handles be associated with the Tx
2589          * queues by the driver as part of the TX queue context
2590          * initialization. This has to be done regardless of
2591          * DCB as by default everything is mapped to TC0.
2592          */
2593         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2594         tx_ctx.rdylist_act = 0;
2595
2596         /* clear the context in the HMC */
2597         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2598         if (err) {
2599                 dev_info(&vsi->back->pdev->dev,
2600                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2601                          ring->queue_index, pf_q, err);
2602                 return -ENOMEM;
2603         }
2604
2605         /* set the context in the HMC */
2606         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2607         if (err) {
2608                 dev_info(&vsi->back->pdev->dev,
2609                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2610                          ring->queue_index, pf_q, err);
2611                 return -ENOMEM;
2612         }
2613
2614         /* Now associate this queue with this PCI function */
2615         if (vsi->type == I40E_VSI_VMDQ2) {
2616                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2617                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2618                            I40E_QTX_CTL_VFVM_INDX_MASK;
2619         } else {
2620                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2621         }
2622
2623         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2624                     I40E_QTX_CTL_PF_INDX_MASK);
2625         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2626         i40e_flush(hw);
2627
2628         /* cache tail off for easier writes later */
2629         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2630
2631         return 0;
2632 }
2633
2634 /**
2635  * i40e_configure_rx_ring - Configure a receive ring context
2636  * @ring: The Rx ring to configure
2637  *
2638  * Configure the Rx descriptor ring in the HMC context.
2639  **/
2640 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2641 {
2642         struct i40e_vsi *vsi = ring->vsi;
2643         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2644         u16 pf_q = vsi->base_queue + ring->queue_index;
2645         struct i40e_hw *hw = &vsi->back->hw;
2646         struct i40e_hmc_obj_rxq rx_ctx;
2647         i40e_status err = 0;
2648
2649         ring->state = 0;
2650
2651         /* clear the context structure first */
2652         memset(&rx_ctx, 0, sizeof(rx_ctx));
2653
2654         ring->rx_buf_len = vsi->rx_buf_len;
2655         ring->rx_hdr_len = vsi->rx_hdr_len;
2656
2657         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2658         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2659
2660         rx_ctx.base = (ring->dma / 128);
2661         rx_ctx.qlen = ring->count;
2662
2663         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2664                 set_ring_16byte_desc_enabled(ring);
2665                 rx_ctx.dsize = 0;
2666         } else {
2667                 rx_ctx.dsize = 1;
2668         }
2669
2670         rx_ctx.dtype = vsi->dtype;
2671         if (vsi->dtype) {
2672                 set_ring_ps_enabled(ring);
2673                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2674                                   I40E_RX_SPLIT_IP      |
2675                                   I40E_RX_SPLIT_TCP_UDP |
2676                                   I40E_RX_SPLIT_SCTP;
2677         } else {
2678                 rx_ctx.hsplit_0 = 0;
2679         }
2680
2681         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2682                                   (chain_len * ring->rx_buf_len));
2683         if (hw->revision_id == 0)
2684                 rx_ctx.lrxqthresh = 0;
2685         else
2686                 rx_ctx.lrxqthresh = 2;
2687         rx_ctx.crcstrip = 1;
2688         rx_ctx.l2tsel = 1;
2689         /* this controls whether VLAN is stripped from inner headers */
2690         rx_ctx.showiv = 0;
2691 #ifdef I40E_FCOE
2692         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2693 #endif
2694         /* set the prefena field to 1 because the manual says to */
2695         rx_ctx.prefena = 1;
2696
2697         /* clear the context in the HMC */
2698         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2699         if (err) {
2700                 dev_info(&vsi->back->pdev->dev,
2701                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2702                          ring->queue_index, pf_q, err);
2703                 return -ENOMEM;
2704         }
2705
2706         /* set the context in the HMC */
2707         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2708         if (err) {
2709                 dev_info(&vsi->back->pdev->dev,
2710                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2711                          ring->queue_index, pf_q, err);
2712                 return -ENOMEM;
2713         }
2714
2715         /* cache tail for quicker writes, and clear the reg before use */
2716         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2717         writel(0, ring->tail);
2718
2719         if (ring_is_ps_enabled(ring)) {
2720                 i40e_alloc_rx_headers(ring);
2721                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2722         } else {
2723                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2724         }
2725
2726         return 0;
2727 }
2728
2729 /**
2730  * i40e_vsi_configure_tx - Configure the VSI for Tx
2731  * @vsi: VSI structure describing this set of rings and resources
2732  *
2733  * Configure the Tx VSI for operation.
2734  **/
2735 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2736 {
2737         int err = 0;
2738         u16 i;
2739
2740         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2741                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2742
2743         return err;
2744 }
2745
2746 /**
2747  * i40e_vsi_configure_rx - Configure the VSI for Rx
2748  * @vsi: the VSI being configured
2749  *
2750  * Configure the Rx VSI for operation.
2751  **/
2752 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2753 {
2754         int err = 0;
2755         u16 i;
2756
2757         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2758                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2759                                + ETH_FCS_LEN + VLAN_HLEN;
2760         else
2761                 vsi->max_frame = I40E_RXBUFFER_2048;
2762
2763         /* figure out correct receive buffer length */
2764         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2765                                     I40E_FLAG_RX_PS_ENABLED)) {
2766         case I40E_FLAG_RX_1BUF_ENABLED:
2767                 vsi->rx_hdr_len = 0;
2768                 vsi->rx_buf_len = vsi->max_frame;
2769                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2770                 break;
2771         case I40E_FLAG_RX_PS_ENABLED:
2772                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2773                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2774                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2775                 break;
2776         default:
2777                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2778                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2779                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2780                 break;
2781         }
2782
2783 #ifdef I40E_FCOE
2784         /* setup rx buffer for FCoE */
2785         if ((vsi->type == I40E_VSI_FCOE) &&
2786             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2787                 vsi->rx_hdr_len = 0;
2788                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2789                 vsi->max_frame = I40E_RXBUFFER_3072;
2790                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2791         }
2792
2793 #endif /* I40E_FCOE */
2794         /* round up for the chip's needs */
2795         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2796                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2797         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2798                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2799
2800         /* set up individual rings */
2801         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2802                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2803
2804         return err;
2805 }
2806
2807 /**
2808  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2809  * @vsi: ptr to the VSI
2810  **/
2811 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2812 {
2813         struct i40e_ring *tx_ring, *rx_ring;
2814         u16 qoffset, qcount;
2815         int i, n;
2816
2817         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2818                 /* Reset the TC information */
2819                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2820                         rx_ring = vsi->rx_rings[i];
2821                         tx_ring = vsi->tx_rings[i];
2822                         rx_ring->dcb_tc = 0;
2823                         tx_ring->dcb_tc = 0;
2824                 }
2825         }
2826
2827         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2828                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2829                         continue;
2830
2831                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2832                 qcount = vsi->tc_config.tc_info[n].qcount;
2833                 for (i = qoffset; i < (qoffset + qcount); i++) {
2834                         rx_ring = vsi->rx_rings[i];
2835                         tx_ring = vsi->tx_rings[i];
2836                         rx_ring->dcb_tc = n;
2837                         tx_ring->dcb_tc = n;
2838                 }
2839         }
2840 }
2841
2842 /**
2843  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2844  * @vsi: ptr to the VSI
2845  **/
2846 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2847 {
2848         if (vsi->netdev)
2849                 i40e_set_rx_mode(vsi->netdev);
2850 }
2851
2852 /**
2853  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2854  * @vsi: Pointer to the targeted VSI
2855  *
2856  * This function replays the hlist on the hw where all the SB Flow Director
2857  * filters were saved.
2858  **/
2859 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2860 {
2861         struct i40e_fdir_filter *filter;
2862         struct i40e_pf *pf = vsi->back;
2863         struct hlist_node *node;
2864
2865         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2866                 return;
2867
2868         hlist_for_each_entry_safe(filter, node,
2869                                   &pf->fdir_filter_list, fdir_node) {
2870                 i40e_add_del_fdir(vsi, filter, true);
2871         }
2872 }
2873
2874 /**
2875  * i40e_vsi_configure - Set up the VSI for action
2876  * @vsi: the VSI being configured
2877  **/
2878 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2879 {
2880         int err;
2881
2882         i40e_set_vsi_rx_mode(vsi);
2883         i40e_restore_vlan(vsi);
2884         i40e_vsi_config_dcb_rings(vsi);
2885         err = i40e_vsi_configure_tx(vsi);
2886         if (!err)
2887                 err = i40e_vsi_configure_rx(vsi);
2888
2889         return err;
2890 }
2891
2892 /**
2893  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2894  * @vsi: the VSI being configured
2895  **/
2896 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2897 {
2898         struct i40e_pf *pf = vsi->back;
2899         struct i40e_q_vector *q_vector;
2900         struct i40e_hw *hw = &pf->hw;
2901         u16 vector;
2902         int i, q;
2903         u32 val;
2904         u32 qp;
2905
2906         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2907          * and PFINT_LNKLSTn registers, e.g.:
2908          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2909          */
2910         qp = vsi->base_queue;
2911         vector = vsi->base_vector;
2912         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2913                 q_vector = vsi->q_vectors[i];
2914                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2915                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2916                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2917                      q_vector->rx.itr);
2918                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2919                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2920                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2921                      q_vector->tx.itr);
2922
2923                 /* Linked list for the queuepairs assigned to this vector */
2924                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2925                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2926                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2927                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2928                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2929                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2930                               (I40E_QUEUE_TYPE_TX
2931                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2932
2933                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2934
2935                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2936                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2937                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2938                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2939                               (I40E_QUEUE_TYPE_RX
2940                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2941
2942                         /* Terminate the linked list */
2943                         if (q == (q_vector->num_ringpairs - 1))
2944                                 val |= (I40E_QUEUE_END_OF_LIST
2945                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2946
2947                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2948                         qp++;
2949                 }
2950         }
2951
2952         i40e_flush(hw);
2953 }
2954
2955 /**
2956  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2957  * @hw: ptr to the hardware info
2958  **/
2959 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2960 {
2961         struct i40e_hw *hw = &pf->hw;
2962         u32 val;
2963
2964         /* clear things first */
2965         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2966         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2967
2968         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2969               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2970               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2971               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2972               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2973               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2974               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2975               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2976
2977         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2978                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2979
2980         if (pf->flags & I40E_FLAG_PTP)
2981                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2982
2983         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2984
2985         /* SW_ITR_IDX = 0, but don't change INTENA */
2986         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2987                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2988
2989         /* OTHER_ITR_IDX = 0 */
2990         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2991 }
2992
2993 /**
2994  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2995  * @vsi: the VSI being configured
2996  **/
2997 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2998 {
2999         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3000         struct i40e_pf *pf = vsi->back;
3001         struct i40e_hw *hw = &pf->hw;
3002         u32 val;
3003
3004         /* set the ITR configuration */
3005         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3006         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3007         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3008         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3009         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3010         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3011
3012         i40e_enable_misc_int_causes(pf);
3013
3014         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3015         wr32(hw, I40E_PFINT_LNKLST0, 0);
3016
3017         /* Associate the queue pair to the vector and enable the queue int */
3018         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3019               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3020               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3021
3022         wr32(hw, I40E_QINT_RQCTL(0), val);
3023
3024         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3025               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3026               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3027
3028         wr32(hw, I40E_QINT_TQCTL(0), val);
3029         i40e_flush(hw);
3030 }
3031
3032 /**
3033  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3034  * @pf: board private structure
3035  **/
3036 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3037 {
3038         struct i40e_hw *hw = &pf->hw;
3039
3040         wr32(hw, I40E_PFINT_DYN_CTL0,
3041              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3042         i40e_flush(hw);
3043 }
3044
3045 /**
3046  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3047  * @pf: board private structure
3048  **/
3049 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3050 {
3051         struct i40e_hw *hw = &pf->hw;
3052         u32 val;
3053
3054         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3055               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3056               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3057
3058         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3059         i40e_flush(hw);
3060 }
3061
3062 /**
3063  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3064  * @vsi: pointer to a vsi
3065  * @vector: disable a particular Hw Interrupt vector
3066  **/
3067 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3068 {
3069         struct i40e_pf *pf = vsi->back;
3070         struct i40e_hw *hw = &pf->hw;
3071         u32 val;
3072
3073         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3074         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3075         i40e_flush(hw);
3076 }
3077
3078 /**
3079  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3080  * @irq: interrupt number
3081  * @data: pointer to a q_vector
3082  **/
3083 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3084 {
3085         struct i40e_q_vector *q_vector = data;
3086
3087         if (!q_vector->tx.ring && !q_vector->rx.ring)
3088                 return IRQ_HANDLED;
3089
3090         napi_schedule(&q_vector->napi);
3091
3092         return IRQ_HANDLED;
3093 }
3094
3095 /**
3096  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3097  * @vsi: the VSI being configured
3098  * @basename: name for the vector
3099  *
3100  * Allocates MSI-X vectors and requests interrupts from the kernel.
3101  **/
3102 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3103 {
3104         int q_vectors = vsi->num_q_vectors;
3105         struct i40e_pf *pf = vsi->back;
3106         int base = vsi->base_vector;
3107         int rx_int_idx = 0;
3108         int tx_int_idx = 0;
3109         int vector, err;
3110
3111         for (vector = 0; vector < q_vectors; vector++) {
3112                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3113
3114                 if (q_vector->tx.ring && q_vector->rx.ring) {
3115                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3116                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3117                         tx_int_idx++;
3118                 } else if (q_vector->rx.ring) {
3119                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3120                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3121                 } else if (q_vector->tx.ring) {
3122                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3123                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3124                 } else {
3125                         /* skip this unused q_vector */
3126                         continue;
3127                 }
3128                 err = request_irq(pf->msix_entries[base + vector].vector,
3129                                   vsi->irq_handler,
3130                                   0,
3131                                   q_vector->name,
3132                                   q_vector);
3133                 if (err) {
3134                         dev_info(&pf->pdev->dev,
3135                                  "MSIX request_irq failed, error: %d\n", err);
3136                         goto free_queue_irqs;
3137                 }
3138                 /* assign the mask for this irq */
3139                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3140                                       &q_vector->affinity_mask);
3141         }
3142
3143         vsi->irqs_ready = true;
3144         return 0;
3145
3146 free_queue_irqs:
3147         while (vector) {
3148                 vector--;
3149                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3150                                       NULL);
3151                 free_irq(pf->msix_entries[base + vector].vector,
3152                          &(vsi->q_vectors[vector]));
3153         }
3154         return err;
3155 }
3156
3157 /**
3158  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3159  * @vsi: the VSI being un-configured
3160  **/
3161 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3162 {
3163         struct i40e_pf *pf = vsi->back;
3164         struct i40e_hw *hw = &pf->hw;
3165         int base = vsi->base_vector;
3166         int i;
3167
3168         for (i = 0; i < vsi->num_queue_pairs; i++) {
3169                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3170                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3171         }
3172
3173         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3174                 for (i = vsi->base_vector;
3175                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3176                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3177
3178                 i40e_flush(hw);
3179                 for (i = 0; i < vsi->num_q_vectors; i++)
3180                         synchronize_irq(pf->msix_entries[i + base].vector);
3181         } else {
3182                 /* Legacy and MSI mode - this stops all interrupt handling */
3183                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3184                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3185                 i40e_flush(hw);
3186                 synchronize_irq(pf->pdev->irq);
3187         }
3188 }
3189
3190 /**
3191  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3192  * @vsi: the VSI being configured
3193  **/
3194 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3195 {
3196         struct i40e_pf *pf = vsi->back;
3197         int i;
3198
3199         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3200                 for (i = 0; i < vsi->num_q_vectors; i++)
3201                         i40e_irq_dynamic_enable(vsi, i);
3202         } else {
3203                 i40e_irq_dynamic_enable_icr0(pf);
3204         }
3205
3206         i40e_flush(&pf->hw);
3207         return 0;
3208 }
3209
3210 /**
3211  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3212  * @pf: board private structure
3213  **/
3214 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3215 {
3216         /* Disable ICR 0 */
3217         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3218         i40e_flush(&pf->hw);
3219 }
3220
3221 /**
3222  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3223  * @irq: interrupt number
3224  * @data: pointer to a q_vector
3225  *
3226  * This is the handler used for all MSI/Legacy interrupts, and deals
3227  * with both queue and non-queue interrupts.  This is also used in
3228  * MSIX mode to handle the non-queue interrupts.
3229  **/
3230 static irqreturn_t i40e_intr(int irq, void *data)
3231 {
3232         struct i40e_pf *pf = (struct i40e_pf *)data;
3233         struct i40e_hw *hw = &pf->hw;
3234         irqreturn_t ret = IRQ_NONE;
3235         u32 icr0, icr0_remaining;
3236         u32 val, ena_mask;
3237
3238         icr0 = rd32(hw, I40E_PFINT_ICR0);
3239         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3240
3241         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3242         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3243                 goto enable_intr;
3244
3245         /* if interrupt but no bits showing, must be SWINT */
3246         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3247             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3248                 pf->sw_int_count++;
3249
3250         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3251             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3252                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3253                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3254                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3255         }
3256
3257         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3258         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3259
3260                 /* temporarily disable queue cause for NAPI processing */
3261                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3262                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3263                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3264
3265                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3266                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3267                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3268
3269                 if (!test_bit(__I40E_DOWN, &pf->state))
3270                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3271         }
3272
3273         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3274                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3275                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3276         }
3277
3278         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3279                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3280                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3281         }
3282
3283         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3284                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3285                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3286         }
3287
3288         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3289                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3290                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3291                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3292                 val = rd32(hw, I40E_GLGEN_RSTAT);
3293                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3294                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3295                 if (val == I40E_RESET_CORER) {
3296                         pf->corer_count++;
3297                 } else if (val == I40E_RESET_GLOBR) {
3298                         pf->globr_count++;
3299                 } else if (val == I40E_RESET_EMPR) {
3300                         pf->empr_count++;
3301                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3302                 }
3303         }
3304
3305         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3306                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3307                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3308                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3309                          rd32(hw, I40E_PFHMC_ERRORINFO),
3310                          rd32(hw, I40E_PFHMC_ERRORDATA));
3311         }
3312
3313         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3314                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3315
3316                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3317                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3318                         i40e_ptp_tx_hwtstamp(pf);
3319                 }
3320         }
3321
3322         /* If a critical error is pending we have no choice but to reset the
3323          * device.
3324          * Report and mask out any remaining unexpected interrupts.
3325          */
3326         icr0_remaining = icr0 & ena_mask;
3327         if (icr0_remaining) {
3328                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3329                          icr0_remaining);
3330                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3331                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3332                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3333                         dev_info(&pf->pdev->dev, "device will be reset\n");
3334                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3335                         i40e_service_event_schedule(pf);
3336                 }
3337                 ena_mask &= ~icr0_remaining;
3338         }
3339         ret = IRQ_HANDLED;
3340
3341 enable_intr:
3342         /* re-enable interrupt causes */
3343         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3344         if (!test_bit(__I40E_DOWN, &pf->state)) {
3345                 i40e_service_event_schedule(pf);
3346                 i40e_irq_dynamic_enable_icr0(pf);
3347         }
3348
3349         return ret;
3350 }
3351
3352 /**
3353  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3354  * @tx_ring:  tx ring to clean
3355  * @budget:   how many cleans we're allowed
3356  *
3357  * Returns true if there's any budget left (e.g. the clean is finished)
3358  **/
3359 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3360 {
3361         struct i40e_vsi *vsi = tx_ring->vsi;
3362         u16 i = tx_ring->next_to_clean;
3363         struct i40e_tx_buffer *tx_buf;
3364         struct i40e_tx_desc *tx_desc;
3365
3366         tx_buf = &tx_ring->tx_bi[i];
3367         tx_desc = I40E_TX_DESC(tx_ring, i);
3368         i -= tx_ring->count;
3369
3370         do {
3371                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3372
3373                 /* if next_to_watch is not set then there is no work pending */
3374                 if (!eop_desc)
3375                         break;
3376
3377                 /* prevent any other reads prior to eop_desc */
3378                 read_barrier_depends();
3379
3380                 /* if the descriptor isn't done, no work yet to do */
3381                 if (!(eop_desc->cmd_type_offset_bsz &
3382                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3383                         break;
3384
3385                 /* clear next_to_watch to prevent false hangs */
3386                 tx_buf->next_to_watch = NULL;
3387
3388                 tx_desc->buffer_addr = 0;
3389                 tx_desc->cmd_type_offset_bsz = 0;
3390                 /* move past filter desc */
3391                 tx_buf++;
3392                 tx_desc++;
3393                 i++;
3394                 if (unlikely(!i)) {
3395                         i -= tx_ring->count;
3396                         tx_buf = tx_ring->tx_bi;
3397                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3398                 }
3399                 /* unmap skb header data */
3400                 dma_unmap_single(tx_ring->dev,
3401                                  dma_unmap_addr(tx_buf, dma),
3402                                  dma_unmap_len(tx_buf, len),
3403                                  DMA_TO_DEVICE);
3404                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3405                         kfree(tx_buf->raw_buf);
3406
3407                 tx_buf->raw_buf = NULL;
3408                 tx_buf->tx_flags = 0;
3409                 tx_buf->next_to_watch = NULL;
3410                 dma_unmap_len_set(tx_buf, len, 0);
3411                 tx_desc->buffer_addr = 0;
3412                 tx_desc->cmd_type_offset_bsz = 0;
3413
3414                 /* move us past the eop_desc for start of next FD desc */
3415                 tx_buf++;
3416                 tx_desc++;
3417                 i++;
3418                 if (unlikely(!i)) {
3419                         i -= tx_ring->count;
3420                         tx_buf = tx_ring->tx_bi;
3421                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3422                 }
3423
3424                 /* update budget accounting */
3425                 budget--;
3426         } while (likely(budget));
3427
3428         i += tx_ring->count;
3429         tx_ring->next_to_clean = i;
3430
3431         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3432                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3433         }
3434         return budget > 0;
3435 }
3436
3437 /**
3438  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3439  * @irq: interrupt number
3440  * @data: pointer to a q_vector
3441  **/
3442 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3443 {
3444         struct i40e_q_vector *q_vector = data;
3445         struct i40e_vsi *vsi;
3446
3447         if (!q_vector->tx.ring)
3448                 return IRQ_HANDLED;
3449
3450         vsi = q_vector->tx.ring->vsi;
3451         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3452
3453         return IRQ_HANDLED;
3454 }
3455
3456 /**
3457  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3458  * @vsi: the VSI being configured
3459  * @v_idx: vector index
3460  * @qp_idx: queue pair index
3461  **/
3462 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3463 {
3464         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3465         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3466         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3467
3468         tx_ring->q_vector = q_vector;
3469         tx_ring->next = q_vector->tx.ring;
3470         q_vector->tx.ring = tx_ring;
3471         q_vector->tx.count++;
3472
3473         rx_ring->q_vector = q_vector;
3474         rx_ring->next = q_vector->rx.ring;
3475         q_vector->rx.ring = rx_ring;
3476         q_vector->rx.count++;
3477 }
3478
3479 /**
3480  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3481  * @vsi: the VSI being configured
3482  *
3483  * This function maps descriptor rings to the queue-specific vectors
3484  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3485  * one vector per queue pair, but on a constrained vector budget, we
3486  * group the queue pairs as "efficiently" as possible.
3487  **/
3488 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3489 {
3490         int qp_remaining = vsi->num_queue_pairs;
3491         int q_vectors = vsi->num_q_vectors;
3492         int num_ringpairs;
3493         int v_start = 0;
3494         int qp_idx = 0;
3495
3496         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3497          * group them so there are multiple queues per vector.
3498          * It is also important to go through all the vectors available to be
3499          * sure that if we don't use all the vectors, that the remaining vectors
3500          * are cleared. This is especially important when decreasing the
3501          * number of queues in use.
3502          */
3503         for (; v_start < q_vectors; v_start++) {
3504                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3505
3506                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3507
3508                 q_vector->num_ringpairs = num_ringpairs;
3509
3510                 q_vector->rx.count = 0;
3511                 q_vector->tx.count = 0;
3512                 q_vector->rx.ring = NULL;
3513                 q_vector->tx.ring = NULL;
3514
3515                 while (num_ringpairs--) {
3516                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3517                         qp_idx++;
3518                         qp_remaining--;
3519                 }
3520         }
3521 }
3522
3523 /**
3524  * i40e_vsi_request_irq - Request IRQ from the OS
3525  * @vsi: the VSI being configured
3526  * @basename: name for the vector
3527  **/
3528 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3529 {
3530         struct i40e_pf *pf = vsi->back;
3531         int err;
3532
3533         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3534                 err = i40e_vsi_request_irq_msix(vsi, basename);
3535         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3536                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3537                                   pf->int_name, pf);
3538         else
3539                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3540                                   pf->int_name, pf);
3541
3542         if (err)
3543                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3544
3545         return err;
3546 }
3547
3548 #ifdef CONFIG_NET_POLL_CONTROLLER
3549 /**
3550  * i40e_netpoll - A Polling 'interrupt'handler
3551  * @netdev: network interface device structure
3552  *
3553  * This is used by netconsole to send skbs without having to re-enable
3554  * interrupts.  It's not called while the normal interrupt routine is executing.
3555  **/
3556 #ifdef I40E_FCOE
3557 void i40e_netpoll(struct net_device *netdev)
3558 #else
3559 static void i40e_netpoll(struct net_device *netdev)
3560 #endif
3561 {
3562         struct i40e_netdev_priv *np = netdev_priv(netdev);
3563         struct i40e_vsi *vsi = np->vsi;
3564         struct i40e_pf *pf = vsi->back;
3565         int i;
3566
3567         /* if interface is down do nothing */
3568         if (test_bit(__I40E_DOWN, &vsi->state))
3569                 return;
3570
3571         pf->flags |= I40E_FLAG_IN_NETPOLL;
3572         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3573                 for (i = 0; i < vsi->num_q_vectors; i++)
3574                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3575         } else {
3576                 i40e_intr(pf->pdev->irq, netdev);
3577         }
3578         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3579 }
3580 #endif
3581
3582 /**
3583  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3584  * @pf: the PF being configured
3585  * @pf_q: the PF queue
3586  * @enable: enable or disable state of the queue
3587  *
3588  * This routine will wait for the given Tx queue of the PF to reach the
3589  * enabled or disabled state.
3590  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3591  * multiple retries; else will return 0 in case of success.
3592  **/
3593 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3594 {
3595         int i;
3596         u32 tx_reg;
3597
3598         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3599                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3600                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3601                         break;
3602
3603                 usleep_range(10, 20);
3604         }
3605         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3606                 return -ETIMEDOUT;
3607
3608         return 0;
3609 }
3610
3611 /**
3612  * i40e_vsi_control_tx - Start or stop a VSI's rings
3613  * @vsi: the VSI being configured
3614  * @enable: start or stop the rings
3615  **/
3616 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3617 {
3618         struct i40e_pf *pf = vsi->back;
3619         struct i40e_hw *hw = &pf->hw;
3620         int i, j, pf_q, ret = 0;
3621         u32 tx_reg;
3622
3623         pf_q = vsi->base_queue;
3624         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3625
3626                 /* warn the TX unit of coming changes */
3627                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3628                 if (!enable)
3629                         usleep_range(10, 20);
3630
3631                 for (j = 0; j < 50; j++) {
3632                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3633                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3634                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3635                                 break;
3636                         usleep_range(1000, 2000);
3637                 }
3638                 /* Skip if the queue is already in the requested state */
3639                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3640                         continue;
3641
3642                 /* turn on/off the queue */
3643                 if (enable) {
3644                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3645                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3646                 } else {
3647                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3648                 }
3649
3650                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3651                 /* No waiting for the Tx queue to disable */
3652                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3653                         continue;
3654
3655                 /* wait for the change to finish */
3656                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3657                 if (ret) {
3658                         dev_info(&pf->pdev->dev,
3659                                  "VSI seid %d Tx ring %d %sable timeout\n",
3660                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3661                         break;
3662                 }
3663         }
3664
3665         if (hw->revision_id == 0)
3666                 mdelay(50);
3667         return ret;
3668 }
3669
3670 /**
3671  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3672  * @pf: the PF being configured
3673  * @pf_q: the PF queue
3674  * @enable: enable or disable state of the queue
3675  *
3676  * This routine will wait for the given Rx queue of the PF to reach the
3677  * enabled or disabled state.
3678  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3679  * multiple retries; else will return 0 in case of success.
3680  **/
3681 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3682 {
3683         int i;
3684         u32 rx_reg;
3685
3686         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3687                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3688                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3689                         break;
3690
3691                 usleep_range(10, 20);
3692         }
3693         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3694                 return -ETIMEDOUT;
3695
3696         return 0;
3697 }
3698
3699 /**
3700  * i40e_vsi_control_rx - Start or stop a VSI's rings
3701  * @vsi: the VSI being configured
3702  * @enable: start or stop the rings
3703  **/
3704 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3705 {
3706         struct i40e_pf *pf = vsi->back;
3707         struct i40e_hw *hw = &pf->hw;
3708         int i, j, pf_q, ret = 0;
3709         u32 rx_reg;
3710
3711         pf_q = vsi->base_queue;
3712         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3713                 for (j = 0; j < 50; j++) {
3714                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3715                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3716                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3717                                 break;
3718                         usleep_range(1000, 2000);
3719                 }
3720
3721                 /* Skip if the queue is already in the requested state */
3722                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3723                         continue;
3724
3725                 /* turn on/off the queue */
3726                 if (enable)
3727                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3728                 else
3729                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3730                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3731
3732                 /* wait for the change to finish */
3733                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3734                 if (ret) {
3735                         dev_info(&pf->pdev->dev,
3736                                  "VSI seid %d Rx ring %d %sable timeout\n",
3737                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3738                         break;
3739                 }
3740         }
3741
3742         return ret;
3743 }
3744
3745 /**
3746  * i40e_vsi_control_rings - Start or stop a VSI's rings
3747  * @vsi: the VSI being configured
3748  * @enable: start or stop the rings
3749  **/
3750 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3751 {
3752         int ret = 0;
3753
3754         /* do rx first for enable and last for disable */
3755         if (request) {
3756                 ret = i40e_vsi_control_rx(vsi, request);
3757                 if (ret)
3758                         return ret;
3759                 ret = i40e_vsi_control_tx(vsi, request);
3760         } else {
3761                 /* Ignore return value, we need to shutdown whatever we can */
3762                 i40e_vsi_control_tx(vsi, request);
3763                 i40e_vsi_control_rx(vsi, request);
3764         }
3765
3766         return ret;
3767 }
3768
3769 /**
3770  * i40e_vsi_free_irq - Free the irq association with the OS
3771  * @vsi: the VSI being configured
3772  **/
3773 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3774 {
3775         struct i40e_pf *pf = vsi->back;
3776         struct i40e_hw *hw = &pf->hw;
3777         int base = vsi->base_vector;
3778         u32 val, qp;
3779         int i;
3780
3781         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3782                 if (!vsi->q_vectors)
3783                         return;
3784
3785                 if (!vsi->irqs_ready)
3786                         return;
3787
3788                 vsi->irqs_ready = false;
3789                 for (i = 0; i < vsi->num_q_vectors; i++) {
3790                         u16 vector = i + base;
3791
3792                         /* free only the irqs that were actually requested */
3793                         if (!vsi->q_vectors[i] ||
3794                             !vsi->q_vectors[i]->num_ringpairs)
3795                                 continue;
3796
3797                         /* clear the affinity_mask in the IRQ descriptor */
3798                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3799                                               NULL);
3800                         free_irq(pf->msix_entries[vector].vector,
3801                                  vsi->q_vectors[i]);
3802
3803                         /* Tear down the interrupt queue link list
3804                          *
3805                          * We know that they come in pairs and always
3806                          * the Rx first, then the Tx.  To clear the
3807                          * link list, stick the EOL value into the
3808                          * next_q field of the registers.
3809                          */
3810                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3811                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3812                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3813                         val |= I40E_QUEUE_END_OF_LIST
3814                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3815                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3816
3817                         while (qp != I40E_QUEUE_END_OF_LIST) {
3818                                 u32 next;
3819
3820                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3821
3822                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3823                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3824                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3825                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3826
3827                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3828                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3829
3830                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3831
3832                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3833
3834                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3835                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3836
3837                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3838                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3839                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3840                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3841
3842                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3843                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3844
3845                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3846                                 qp = next;
3847                         }
3848                 }
3849         } else {
3850                 free_irq(pf->pdev->irq, pf);
3851
3852                 val = rd32(hw, I40E_PFINT_LNKLST0);
3853                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3854                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3855                 val |= I40E_QUEUE_END_OF_LIST
3856                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3857                 wr32(hw, I40E_PFINT_LNKLST0, val);
3858
3859                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3860                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3861                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3862                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3863                          I40E_QINT_RQCTL_INTEVENT_MASK);
3864
3865                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3866                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3867
3868                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3869
3870                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3871
3872                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3873                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3874                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3875                          I40E_QINT_TQCTL_INTEVENT_MASK);
3876
3877                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3878                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3879
3880                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3881         }
3882 }
3883
3884 /**
3885  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3886  * @vsi: the VSI being configured
3887  * @v_idx: Index of vector to be freed
3888  *
3889  * This function frees the memory allocated to the q_vector.  In addition if
3890  * NAPI is enabled it will delete any references to the NAPI struct prior
3891  * to freeing the q_vector.
3892  **/
3893 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3894 {
3895         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3896         struct i40e_ring *ring;
3897
3898         if (!q_vector)
3899                 return;
3900
3901         /* disassociate q_vector from rings */
3902         i40e_for_each_ring(ring, q_vector->tx)
3903                 ring->q_vector = NULL;
3904
3905         i40e_for_each_ring(ring, q_vector->rx)
3906                 ring->q_vector = NULL;
3907
3908         /* only VSI w/ an associated netdev is set up w/ NAPI */
3909         if (vsi->netdev)
3910                 netif_napi_del(&q_vector->napi);
3911
3912         vsi->q_vectors[v_idx] = NULL;
3913
3914         kfree_rcu(q_vector, rcu);
3915 }
3916
3917 /**
3918  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3919  * @vsi: the VSI being un-configured
3920  *
3921  * This frees the memory allocated to the q_vectors and
3922  * deletes references to the NAPI struct.
3923  **/
3924 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3925 {
3926         int v_idx;
3927
3928         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3929                 i40e_free_q_vector(vsi, v_idx);
3930 }
3931
3932 /**
3933  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3934  * @pf: board private structure
3935  **/
3936 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3937 {
3938         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3939         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3940                 pci_disable_msix(pf->pdev);
3941                 kfree(pf->msix_entries);
3942                 pf->msix_entries = NULL;
3943                 kfree(pf->irq_pile);
3944                 pf->irq_pile = NULL;
3945         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3946                 pci_disable_msi(pf->pdev);
3947         }
3948         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3949 }
3950
3951 /**
3952  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3953  * @pf: board private structure
3954  *
3955  * We go through and clear interrupt specific resources and reset the structure
3956  * to pre-load conditions
3957  **/
3958 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3959 {
3960         int i;
3961
3962         i40e_stop_misc_vector(pf);
3963         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3964                 synchronize_irq(pf->msix_entries[0].vector);
3965                 free_irq(pf->msix_entries[0].vector, pf);
3966         }
3967
3968         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3969         for (i = 0; i < pf->num_alloc_vsi; i++)
3970                 if (pf->vsi[i])
3971                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3972         i40e_reset_interrupt_capability(pf);
3973 }
3974
3975 /**
3976  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3977  * @vsi: the VSI being configured
3978  **/
3979 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3980 {
3981         int q_idx;
3982
3983         if (!vsi->netdev)
3984                 return;
3985
3986         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3987                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3988 }
3989
3990 /**
3991  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3992  * @vsi: the VSI being configured
3993  **/
3994 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3995 {
3996         int q_idx;
3997
3998         if (!vsi->netdev)
3999                 return;
4000
4001         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4002                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4003 }
4004
4005 /**
4006  * i40e_vsi_close - Shut down a VSI
4007  * @vsi: the vsi to be quelled
4008  **/
4009 static void i40e_vsi_close(struct i40e_vsi *vsi)
4010 {
4011         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4012                 i40e_down(vsi);
4013         i40e_vsi_free_irq(vsi);
4014         i40e_vsi_free_tx_resources(vsi);
4015         i40e_vsi_free_rx_resources(vsi);
4016         vsi->current_netdev_flags = 0;
4017 }
4018
4019 /**
4020  * i40e_quiesce_vsi - Pause a given VSI
4021  * @vsi: the VSI being paused
4022  **/
4023 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4024 {
4025         if (test_bit(__I40E_DOWN, &vsi->state))
4026                 return;
4027
4028         /* No need to disable FCoE VSI when Tx suspended */
4029         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4030             vsi->type == I40E_VSI_FCOE) {
4031                 dev_dbg(&vsi->back->pdev->dev,
4032                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4033                 return;
4034         }
4035
4036         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4037         if (vsi->netdev && netif_running(vsi->netdev)) {
4038                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4039         } else {
4040                 i40e_vsi_close(vsi);
4041         }
4042 }
4043
4044 /**
4045  * i40e_unquiesce_vsi - Resume a given VSI
4046  * @vsi: the VSI being resumed
4047  **/
4048 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4049 {
4050         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4051                 return;
4052
4053         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4054         if (vsi->netdev && netif_running(vsi->netdev))
4055                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4056         else
4057                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4058 }
4059
4060 /**
4061  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4062  * @pf: the PF
4063  **/
4064 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4065 {
4066         int v;
4067
4068         for (v = 0; v < pf->num_alloc_vsi; v++) {
4069                 if (pf->vsi[v])
4070                         i40e_quiesce_vsi(pf->vsi[v]);
4071         }
4072 }
4073
4074 /**
4075  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4076  * @pf: the PF
4077  **/
4078 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4079 {
4080         int v;
4081
4082         for (v = 0; v < pf->num_alloc_vsi; v++) {
4083                 if (pf->vsi[v])
4084                         i40e_unquiesce_vsi(pf->vsi[v]);
4085         }
4086 }
4087
4088 #ifdef CONFIG_I40E_DCB
4089 /**
4090  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4091  * @vsi: the VSI being configured
4092  *
4093  * This function waits for the given VSI's Tx queues to be disabled.
4094  **/
4095 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4096 {
4097         struct i40e_pf *pf = vsi->back;
4098         int i, pf_q, ret;
4099
4100         pf_q = vsi->base_queue;
4101         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4102                 /* Check and wait for the disable status of the queue */
4103                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4104                 if (ret) {
4105                         dev_info(&pf->pdev->dev,
4106                                  "VSI seid %d Tx ring %d disable timeout\n",
4107                                  vsi->seid, pf_q);
4108                         return ret;
4109                 }
4110         }
4111
4112         return 0;
4113 }
4114
4115 /**
4116  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4117  * @pf: the PF
4118  *
4119  * This function waits for the Tx queues to be in disabled state for all the
4120  * VSIs that are managed by this PF.
4121  **/
4122 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4123 {
4124         int v, ret = 0;
4125
4126         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4127                 /* No need to wait for FCoE VSI queues */
4128                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4129                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4130                         if (ret)
4131                                 break;
4132                 }
4133         }
4134
4135         return ret;
4136 }
4137
4138 #endif
4139
4140 /**
4141  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4142  * @q_idx: TX queue number
4143  * @vsi: Pointer to VSI struct
4144  *
4145  * This function checks specified queue for given VSI. Detects hung condition.
4146  * Sets hung bit since it is two step process. Before next run of service task
4147  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4148  * hung condition remain unchanged and during subsequent run, this function
4149  * issues SW interrupt to recover from hung condition.
4150  **/
4151 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4152 {
4153         struct i40e_ring *tx_ring = NULL;
4154         struct i40e_pf  *pf;
4155         u32 head, val, tx_pending;
4156         int i;
4157
4158         pf = vsi->back;
4159
4160         /* now that we have an index, find the tx_ring struct */
4161         for (i = 0; i < vsi->num_queue_pairs; i++) {
4162                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4163                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4164                                 tx_ring = vsi->tx_rings[i];
4165                                 break;
4166                         }
4167                 }
4168         }
4169
4170         if (!tx_ring)
4171                 return;
4172
4173         /* Read interrupt register */
4174         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4175                 val = rd32(&pf->hw,
4176                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4177                                                tx_ring->vsi->base_vector - 1));
4178         else
4179                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4180
4181         head = i40e_get_head(tx_ring);
4182
4183         tx_pending = i40e_get_tx_pending(tx_ring);
4184
4185         /* Interrupts are disabled and TX pending is non-zero,
4186          * trigger the SW interrupt (don't wait). Worst case
4187          * there will be one extra interrupt which may result
4188          * into not cleaning any queues because queues are cleaned.
4189          */
4190         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4191                 i40e_force_wb(vsi, tx_ring->q_vector);
4192 }
4193
4194 /**
4195  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4196  * @pf:  pointer to PF struct
4197  *
4198  * LAN VSI has netdev and netdev has TX queues. This function is to check
4199  * each of those TX queues if they are hung, trigger recovery by issuing
4200  * SW interrupt.
4201  **/
4202 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4203 {
4204         struct net_device *netdev;
4205         struct i40e_vsi *vsi;
4206         int i;
4207
4208         /* Only for LAN VSI */
4209         vsi = pf->vsi[pf->lan_vsi];
4210
4211         if (!vsi)
4212                 return;
4213
4214         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4215         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4216             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4217                 return;
4218
4219         /* Make sure type is MAIN VSI */
4220         if (vsi->type != I40E_VSI_MAIN)
4221                 return;
4222
4223         netdev = vsi->netdev;
4224         if (!netdev)
4225                 return;
4226
4227         /* Bail out if netif_carrier is not OK */
4228         if (!netif_carrier_ok(netdev))
4229                 return;
4230
4231         /* Go thru' TX queues for netdev */
4232         for (i = 0; i < netdev->num_tx_queues; i++) {
4233                 struct netdev_queue *q;
4234
4235                 q = netdev_get_tx_queue(netdev, i);
4236                 if (q)
4237                         i40e_detect_recover_hung_queue(i, vsi);
4238         }
4239 }
4240
4241 /**
4242  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4243  * @pf: pointer to PF
4244  *
4245  * Get TC map for ISCSI PF type that will include iSCSI TC
4246  * and LAN TC.
4247  **/
4248 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4249 {
4250         struct i40e_dcb_app_priority_table app;
4251         struct i40e_hw *hw = &pf->hw;
4252         u8 enabled_tc = 1; /* TC0 is always enabled */
4253         u8 tc, i;
4254         /* Get the iSCSI APP TLV */
4255         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4256
4257         for (i = 0; i < dcbcfg->numapps; i++) {
4258                 app = dcbcfg->app[i];
4259                 if (app.selector == I40E_APP_SEL_TCPIP &&
4260                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4261                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4262                         enabled_tc |= BIT_ULL(tc);
4263                         break;
4264                 }
4265         }
4266
4267         return enabled_tc;
4268 }
4269
4270 /**
4271  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4272  * @dcbcfg: the corresponding DCBx configuration structure
4273  *
4274  * Return the number of TCs from given DCBx configuration
4275  **/
4276 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4277 {
4278         u8 num_tc = 0;
4279         int i;
4280
4281         /* Scan the ETS Config Priority Table to find
4282          * traffic class enabled for a given priority
4283          * and use the traffic class index to get the
4284          * number of traffic classes enabled
4285          */
4286         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4287                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4288                         num_tc = dcbcfg->etscfg.prioritytable[i];
4289         }
4290
4291         /* Traffic class index starts from zero so
4292          * increment to return the actual count
4293          */
4294         return num_tc + 1;
4295 }
4296
4297 /**
4298  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4299  * @dcbcfg: the corresponding DCBx configuration structure
4300  *
4301  * Query the current DCB configuration and return the number of
4302  * traffic classes enabled from the given DCBX config
4303  **/
4304 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4305 {
4306         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4307         u8 enabled_tc = 1;
4308         u8 i;
4309
4310         for (i = 0; i < num_tc; i++)
4311                 enabled_tc |= BIT(i);
4312
4313         return enabled_tc;
4314 }
4315
4316 /**
4317  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4318  * @pf: PF being queried
4319  *
4320  * Return number of traffic classes enabled for the given PF
4321  **/
4322 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4323 {
4324         struct i40e_hw *hw = &pf->hw;
4325         u8 i, enabled_tc;
4326         u8 num_tc = 0;
4327         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4328
4329         /* If DCB is not enabled then always in single TC */
4330         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4331                 return 1;
4332
4333         /* SFP mode will be enabled for all TCs on port */
4334         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4335                 return i40e_dcb_get_num_tc(dcbcfg);
4336
4337         /* MFP mode return count of enabled TCs for this PF */
4338         if (pf->hw.func_caps.iscsi)
4339                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4340         else
4341                 return 1; /* Only TC0 */
4342
4343         /* At least have TC0 */
4344         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4345         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4346                 if (enabled_tc & BIT_ULL(i))
4347                         num_tc++;
4348         }
4349         return num_tc;
4350 }
4351
4352 /**
4353  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4354  * @pf: PF being queried
4355  *
4356  * Return a bitmap for first enabled traffic class for this PF.
4357  **/
4358 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4359 {
4360         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4361         u8 i = 0;
4362
4363         if (!enabled_tc)
4364                 return 0x1; /* TC0 */
4365
4366         /* Find the first enabled TC */
4367         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4368                 if (enabled_tc & BIT_ULL(i))
4369                         break;
4370         }
4371
4372         return BIT(i);
4373 }
4374
4375 /**
4376  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4377  * @pf: PF being queried
4378  *
4379  * Return a bitmap for enabled traffic classes for this PF.
4380  **/
4381 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4382 {
4383         /* If DCB is not enabled for this PF then just return default TC */
4384         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4385                 return i40e_pf_get_default_tc(pf);
4386
4387         /* SFP mode we want PF to be enabled for all TCs */
4388         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4389                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4390
4391         /* MFP enabled and iSCSI PF type */
4392         if (pf->hw.func_caps.iscsi)
4393                 return i40e_get_iscsi_tc_map(pf);
4394         else
4395                 return i40e_pf_get_default_tc(pf);
4396 }
4397
4398 /**
4399  * i40e_vsi_get_bw_info - Query VSI BW Information
4400  * @vsi: the VSI being queried
4401  *
4402  * Returns 0 on success, negative value on failure
4403  **/
4404 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4405 {
4406         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4407         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4408         struct i40e_pf *pf = vsi->back;
4409         struct i40e_hw *hw = &pf->hw;
4410         i40e_status ret;
4411         u32 tc_bw_max;
4412         int i;
4413
4414         /* Get the VSI level BW configuration */
4415         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4416         if (ret) {
4417                 dev_info(&pf->pdev->dev,
4418                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4419                          i40e_stat_str(&pf->hw, ret),
4420                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4421                 return -EINVAL;
4422         }
4423
4424         /* Get the VSI level BW configuration per TC */
4425         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4426                                                NULL);
4427         if (ret) {
4428                 dev_info(&pf->pdev->dev,
4429                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4430                          i40e_stat_str(&pf->hw, ret),
4431                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4432                 return -EINVAL;
4433         }
4434
4435         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4436                 dev_info(&pf->pdev->dev,
4437                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4438                          bw_config.tc_valid_bits,
4439                          bw_ets_config.tc_valid_bits);
4440                 /* Still continuing */
4441         }
4442
4443         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4444         vsi->bw_max_quanta = bw_config.max_bw;
4445         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4446                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4447         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4448                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4449                 vsi->bw_ets_limit_credits[i] =
4450                                         le16_to_cpu(bw_ets_config.credits[i]);
4451                 /* 3 bits out of 4 for each TC */
4452                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4453         }
4454
4455         return 0;
4456 }
4457
4458 /**
4459  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4460  * @vsi: the VSI being configured
4461  * @enabled_tc: TC bitmap
4462  * @bw_credits: BW shared credits per TC
4463  *
4464  * Returns 0 on success, negative value on failure
4465  **/
4466 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4467                                        u8 *bw_share)
4468 {
4469         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4470         i40e_status ret;
4471         int i;
4472
4473         bw_data.tc_valid_bits = enabled_tc;
4474         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4475                 bw_data.tc_bw_credits[i] = bw_share[i];
4476
4477         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4478                                        NULL);
4479         if (ret) {
4480                 dev_info(&vsi->back->pdev->dev,
4481                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4482                          vsi->back->hw.aq.asq_last_status);
4483                 return -EINVAL;
4484         }
4485
4486         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4487                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4488
4489         return 0;
4490 }
4491
4492 /**
4493  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4494  * @vsi: the VSI being configured
4495  * @enabled_tc: TC map to be enabled
4496  *
4497  **/
4498 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4499 {
4500         struct net_device *netdev = vsi->netdev;
4501         struct i40e_pf *pf = vsi->back;
4502         struct i40e_hw *hw = &pf->hw;
4503         u8 netdev_tc = 0;
4504         int i;
4505         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4506
4507         if (!netdev)
4508                 return;
4509
4510         if (!enabled_tc) {
4511                 netdev_reset_tc(netdev);
4512                 return;
4513         }
4514
4515         /* Set up actual enabled TCs on the VSI */
4516         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4517                 return;
4518
4519         /* set per TC queues for the VSI */
4520         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4521                 /* Only set TC queues for enabled tcs
4522                  *
4523                  * e.g. For a VSI that has TC0 and TC3 enabled the
4524                  * enabled_tc bitmap would be 0x00001001; the driver
4525                  * will set the numtc for netdev as 2 that will be
4526                  * referenced by the netdev layer as TC 0 and 1.
4527                  */
4528                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4529                         netdev_set_tc_queue(netdev,
4530                                         vsi->tc_config.tc_info[i].netdev_tc,
4531                                         vsi->tc_config.tc_info[i].qcount,
4532                                         vsi->tc_config.tc_info[i].qoffset);
4533         }
4534
4535         /* Assign UP2TC map for the VSI */
4536         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4537                 /* Get the actual TC# for the UP */
4538                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4539                 /* Get the mapped netdev TC# for the UP */
4540                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4541                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4542         }
4543 }
4544
4545 /**
4546  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4547  * @vsi: the VSI being configured
4548  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4549  **/
4550 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4551                                       struct i40e_vsi_context *ctxt)
4552 {
4553         /* copy just the sections touched not the entire info
4554          * since not all sections are valid as returned by
4555          * update vsi params
4556          */
4557         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4558         memcpy(&vsi->info.queue_mapping,
4559                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4560         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4561                sizeof(vsi->info.tc_mapping));
4562 }
4563
4564 /**
4565  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4566  * @vsi: VSI to be configured
4567  * @enabled_tc: TC bitmap
4568  *
4569  * This configures a particular VSI for TCs that are mapped to the
4570  * given TC bitmap. It uses default bandwidth share for TCs across
4571  * VSIs to configure TC for a particular VSI.
4572  *
4573  * NOTE:
4574  * It is expected that the VSI queues have been quisced before calling
4575  * this function.
4576  **/
4577 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4578 {
4579         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4580         struct i40e_vsi_context ctxt;
4581         int ret = 0;
4582         int i;
4583
4584         /* Check if enabled_tc is same as existing or new TCs */
4585         if (vsi->tc_config.enabled_tc == enabled_tc)
4586                 return ret;
4587
4588         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4589         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4590                 if (enabled_tc & BIT_ULL(i))
4591                         bw_share[i] = 1;
4592         }
4593
4594         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4595         if (ret) {
4596                 dev_info(&vsi->back->pdev->dev,
4597                          "Failed configuring TC map %d for VSI %d\n",
4598                          enabled_tc, vsi->seid);
4599                 goto out;
4600         }
4601
4602         /* Update Queue Pairs Mapping for currently enabled UPs */
4603         ctxt.seid = vsi->seid;
4604         ctxt.pf_num = vsi->back->hw.pf_id;
4605         ctxt.vf_num = 0;
4606         ctxt.uplink_seid = vsi->uplink_seid;
4607         ctxt.info = vsi->info;
4608         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4609
4610         /* Update the VSI after updating the VSI queue-mapping information */
4611         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4612         if (ret) {
4613                 dev_info(&vsi->back->pdev->dev,
4614                          "Update vsi tc config failed, err %s aq_err %s\n",
4615                          i40e_stat_str(&vsi->back->hw, ret),
4616                          i40e_aq_str(&vsi->back->hw,
4617                                      vsi->back->hw.aq.asq_last_status));
4618                 goto out;
4619         }
4620         /* update the local VSI info with updated queue map */
4621         i40e_vsi_update_queue_map(vsi, &ctxt);
4622         vsi->info.valid_sections = 0;
4623
4624         /* Update current VSI BW information */
4625         ret = i40e_vsi_get_bw_info(vsi);
4626         if (ret) {
4627                 dev_info(&vsi->back->pdev->dev,
4628                          "Failed updating vsi bw info, err %s aq_err %s\n",
4629                          i40e_stat_str(&vsi->back->hw, ret),
4630                          i40e_aq_str(&vsi->back->hw,
4631                                      vsi->back->hw.aq.asq_last_status));
4632                 goto out;
4633         }
4634
4635         /* Update the netdev TC setup */
4636         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4637 out:
4638         return ret;
4639 }
4640
4641 /**
4642  * i40e_veb_config_tc - Configure TCs for given VEB
4643  * @veb: given VEB
4644  * @enabled_tc: TC bitmap
4645  *
4646  * Configures given TC bitmap for VEB (switching) element
4647  **/
4648 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4649 {
4650         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4651         struct i40e_pf *pf = veb->pf;
4652         int ret = 0;
4653         int i;
4654
4655         /* No TCs or already enabled TCs just return */
4656         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4657                 return ret;
4658
4659         bw_data.tc_valid_bits = enabled_tc;
4660         /* bw_data.absolute_credits is not set (relative) */
4661
4662         /* Enable ETS TCs with equal BW Share for now */
4663         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4664                 if (enabled_tc & BIT_ULL(i))
4665                         bw_data.tc_bw_share_credits[i] = 1;
4666         }
4667
4668         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4669                                                    &bw_data, NULL);
4670         if (ret) {
4671                 dev_info(&pf->pdev->dev,
4672                          "VEB bw config failed, err %s aq_err %s\n",
4673                          i40e_stat_str(&pf->hw, ret),
4674                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4675                 goto out;
4676         }
4677
4678         /* Update the BW information */
4679         ret = i40e_veb_get_bw_info(veb);
4680         if (ret) {
4681                 dev_info(&pf->pdev->dev,
4682                          "Failed getting veb bw config, err %s aq_err %s\n",
4683                          i40e_stat_str(&pf->hw, ret),
4684                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4685         }
4686
4687 out:
4688         return ret;
4689 }
4690
4691 #ifdef CONFIG_I40E_DCB
4692 /**
4693  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4694  * @pf: PF struct
4695  *
4696  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4697  * the caller would've quiesce all the VSIs before calling
4698  * this function
4699  **/
4700 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4701 {
4702         u8 tc_map = 0;
4703         int ret;
4704         u8 v;
4705
4706         /* Enable the TCs available on PF to all VEBs */
4707         tc_map = i40e_pf_get_tc_map(pf);
4708         for (v = 0; v < I40E_MAX_VEB; v++) {
4709                 if (!pf->veb[v])
4710                         continue;
4711                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4712                 if (ret) {
4713                         dev_info(&pf->pdev->dev,
4714                                  "Failed configuring TC for VEB seid=%d\n",
4715                                  pf->veb[v]->seid);
4716                         /* Will try to configure as many components */
4717                 }
4718         }
4719
4720         /* Update each VSI */
4721         for (v = 0; v < pf->num_alloc_vsi; v++) {
4722                 if (!pf->vsi[v])
4723                         continue;
4724
4725                 /* - Enable all TCs for the LAN VSI
4726 #ifdef I40E_FCOE
4727                  * - For FCoE VSI only enable the TC configured
4728                  *   as per the APP TLV
4729 #endif
4730                  * - For all others keep them at TC0 for now
4731                  */
4732                 if (v == pf->lan_vsi)
4733                         tc_map = i40e_pf_get_tc_map(pf);
4734                 else
4735                         tc_map = i40e_pf_get_default_tc(pf);
4736 #ifdef I40E_FCOE
4737                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4738                         tc_map = i40e_get_fcoe_tc_map(pf);
4739 #endif /* #ifdef I40E_FCOE */
4740
4741                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4742                 if (ret) {
4743                         dev_info(&pf->pdev->dev,
4744                                  "Failed configuring TC for VSI seid=%d\n",
4745                                  pf->vsi[v]->seid);
4746                         /* Will try to configure as many components */
4747                 } else {
4748                         /* Re-configure VSI vectors based on updated TC map */
4749                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4750                         if (pf->vsi[v]->netdev)
4751                                 i40e_dcbnl_set_all(pf->vsi[v]);
4752                 }
4753         }
4754 }
4755
4756 /**
4757  * i40e_resume_port_tx - Resume port Tx
4758  * @pf: PF struct
4759  *
4760  * Resume a port's Tx and issue a PF reset in case of failure to
4761  * resume.
4762  **/
4763 static int i40e_resume_port_tx(struct i40e_pf *pf)
4764 {
4765         struct i40e_hw *hw = &pf->hw;
4766         int ret;
4767
4768         ret = i40e_aq_resume_port_tx(hw, NULL);
4769         if (ret) {
4770                 dev_info(&pf->pdev->dev,
4771                          "Resume Port Tx failed, err %s aq_err %s\n",
4772                           i40e_stat_str(&pf->hw, ret),
4773                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4774                 /* Schedule PF reset to recover */
4775                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4776                 i40e_service_event_schedule(pf);
4777         }
4778
4779         return ret;
4780 }
4781
4782 /**
4783  * i40e_init_pf_dcb - Initialize DCB configuration
4784  * @pf: PF being configured
4785  *
4786  * Query the current DCB configuration and cache it
4787  * in the hardware structure
4788  **/
4789 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4790 {
4791         struct i40e_hw *hw = &pf->hw;
4792         int err = 0;
4793
4794         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4795         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4796             (pf->hw.aq.fw_maj_ver < 4))
4797                 goto out;
4798
4799         /* Get the initial DCB configuration */
4800         err = i40e_init_dcb(hw);
4801         if (!err) {
4802                 /* Device/Function is not DCBX capable */
4803                 if ((!hw->func_caps.dcb) ||
4804                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4805                         dev_info(&pf->pdev->dev,
4806                                  "DCBX offload is not supported or is disabled for this PF.\n");
4807
4808                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4809                                 goto out;
4810
4811                 } else {
4812                         /* When status is not DISABLED then DCBX in FW */
4813                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4814                                        DCB_CAP_DCBX_VER_IEEE;
4815
4816                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4817                         /* Enable DCB tagging only when more than one TC */
4818                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4819                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4820                         dev_dbg(&pf->pdev->dev,
4821                                 "DCBX offload is supported for this PF.\n");
4822                 }
4823         } else {
4824                 dev_info(&pf->pdev->dev,
4825                          "Query for DCB configuration failed, err %s aq_err %s\n",
4826                          i40e_stat_str(&pf->hw, err),
4827                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4828         }
4829
4830 out:
4831         return err;
4832 }
4833 #endif /* CONFIG_I40E_DCB */
4834 #define SPEED_SIZE 14
4835 #define FC_SIZE 8
4836 /**
4837  * i40e_print_link_message - print link up or down
4838  * @vsi: the VSI for which link needs a message
4839  */
4840 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4841 {
4842         char speed[SPEED_SIZE] = "Unknown";
4843         char fc[FC_SIZE] = "RX/TX";
4844
4845         if (vsi->current_isup == isup)
4846                 return;
4847         vsi->current_isup = isup;
4848         if (!isup) {
4849                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4850                 return;
4851         }
4852
4853         /* Warn user if link speed on NPAR enabled partition is not at
4854          * least 10GB
4855          */
4856         if (vsi->back->hw.func_caps.npar_enable &&
4857             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4858              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4859                 netdev_warn(vsi->netdev,
4860                             "The partition detected link speed that is less than 10Gbps\n");
4861
4862         switch (vsi->back->hw.phy.link_info.link_speed) {
4863         case I40E_LINK_SPEED_40GB:
4864                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4865                 break;
4866         case I40E_LINK_SPEED_20GB:
4867                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4868                 break;
4869         case I40E_LINK_SPEED_10GB:
4870                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4871                 break;
4872         case I40E_LINK_SPEED_1GB:
4873                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4874                 break;
4875         case I40E_LINK_SPEED_100MB:
4876                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4877                 break;
4878         default:
4879                 break;
4880         }
4881
4882         switch (vsi->back->hw.fc.current_mode) {
4883         case I40E_FC_FULL:
4884                 strlcpy(fc, "RX/TX", FC_SIZE);
4885                 break;
4886         case I40E_FC_TX_PAUSE:
4887                 strlcpy(fc, "TX", FC_SIZE);
4888                 break;
4889         case I40E_FC_RX_PAUSE:
4890                 strlcpy(fc, "RX", FC_SIZE);
4891                 break;
4892         default:
4893                 strlcpy(fc, "None", FC_SIZE);
4894                 break;
4895         }
4896
4897         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4898                     speed, fc);
4899 }
4900
4901 /**
4902  * i40e_up_complete - Finish the last steps of bringing up a connection
4903  * @vsi: the VSI being configured
4904  **/
4905 static int i40e_up_complete(struct i40e_vsi *vsi)
4906 {
4907         struct i40e_pf *pf = vsi->back;
4908         int err;
4909
4910         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4911                 i40e_vsi_configure_msix(vsi);
4912         else
4913                 i40e_configure_msi_and_legacy(vsi);
4914
4915         /* start rings */
4916         err = i40e_vsi_control_rings(vsi, true);
4917         if (err)
4918                 return err;
4919
4920         clear_bit(__I40E_DOWN, &vsi->state);
4921         i40e_napi_enable_all(vsi);
4922         i40e_vsi_enable_irq(vsi);
4923
4924         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4925             (vsi->netdev)) {
4926                 i40e_print_link_message(vsi, true);
4927                 netif_tx_start_all_queues(vsi->netdev);
4928                 netif_carrier_on(vsi->netdev);
4929         } else if (vsi->netdev) {
4930                 i40e_print_link_message(vsi, false);
4931                 /* need to check for qualified module here*/
4932                 if ((pf->hw.phy.link_info.link_info &
4933                         I40E_AQ_MEDIA_AVAILABLE) &&
4934                     (!(pf->hw.phy.link_info.an_info &
4935                         I40E_AQ_QUALIFIED_MODULE)))
4936                         netdev_err(vsi->netdev,
4937                                    "the driver failed to link because an unqualified module was detected.");
4938         }
4939
4940         /* replay FDIR SB filters */
4941         if (vsi->type == I40E_VSI_FDIR) {
4942                 /* reset fd counters */
4943                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4944                 if (pf->fd_tcp_rule > 0) {
4945                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4946                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4947                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4948                         pf->fd_tcp_rule = 0;
4949                 }
4950                 i40e_fdir_filter_restore(vsi);
4951         }
4952         i40e_service_event_schedule(pf);
4953
4954         return 0;
4955 }
4956
4957 /**
4958  * i40e_vsi_reinit_locked - Reset the VSI
4959  * @vsi: the VSI being configured
4960  *
4961  * Rebuild the ring structs after some configuration
4962  * has changed, e.g. MTU size.
4963  **/
4964 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4965 {
4966         struct i40e_pf *pf = vsi->back;
4967
4968         WARN_ON(in_interrupt());
4969         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4970                 usleep_range(1000, 2000);
4971         i40e_down(vsi);
4972
4973         /* Give a VF some time to respond to the reset.  The
4974          * two second wait is based upon the watchdog cycle in
4975          * the VF driver.
4976          */
4977         if (vsi->type == I40E_VSI_SRIOV)
4978                 msleep(2000);
4979         i40e_up(vsi);
4980         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4981 }
4982
4983 /**
4984  * i40e_up - Bring the connection back up after being down
4985  * @vsi: the VSI being configured
4986  **/
4987 int i40e_up(struct i40e_vsi *vsi)
4988 {
4989         int err;
4990
4991         err = i40e_vsi_configure(vsi);
4992         if (!err)
4993                 err = i40e_up_complete(vsi);
4994
4995         return err;
4996 }
4997
4998 /**
4999  * i40e_down - Shutdown the connection processing
5000  * @vsi: the VSI being stopped
5001  **/
5002 void i40e_down(struct i40e_vsi *vsi)
5003 {
5004         int i;
5005
5006         /* It is assumed that the caller of this function
5007          * sets the vsi->state __I40E_DOWN bit.
5008          */
5009         if (vsi->netdev) {
5010                 netif_carrier_off(vsi->netdev);
5011                 netif_tx_disable(vsi->netdev);
5012         }
5013         i40e_vsi_disable_irq(vsi);
5014         i40e_vsi_control_rings(vsi, false);
5015         i40e_napi_disable_all(vsi);
5016
5017         for (i = 0; i < vsi->num_queue_pairs; i++) {
5018                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5019                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5020         }
5021 }
5022
5023 /**
5024  * i40e_setup_tc - configure multiple traffic classes
5025  * @netdev: net device to configure
5026  * @tc: number of traffic classes to enable
5027  **/
5028 #ifdef I40E_FCOE
5029 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5030 #else
5031 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5032 #endif
5033 {
5034         struct i40e_netdev_priv *np = netdev_priv(netdev);
5035         struct i40e_vsi *vsi = np->vsi;
5036         struct i40e_pf *pf = vsi->back;
5037         u8 enabled_tc = 0;
5038         int ret = -EINVAL;
5039         int i;
5040
5041         /* Check if DCB enabled to continue */
5042         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5043                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5044                 goto exit;
5045         }
5046
5047         /* Check if MFP enabled */
5048         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5049                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5050                 goto exit;
5051         }
5052
5053         /* Check whether tc count is within enabled limit */
5054         if (tc > i40e_pf_get_num_tc(pf)) {
5055                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5056                 goto exit;
5057         }
5058
5059         /* Generate TC map for number of tc requested */
5060         for (i = 0; i < tc; i++)
5061                 enabled_tc |= BIT_ULL(i);
5062
5063         /* Requesting same TC configuration as already enabled */
5064         if (enabled_tc == vsi->tc_config.enabled_tc)
5065                 return 0;
5066
5067         /* Quiesce VSI queues */
5068         i40e_quiesce_vsi(vsi);
5069
5070         /* Configure VSI for enabled TCs */
5071         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5072         if (ret) {
5073                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5074                             vsi->seid);
5075                 goto exit;
5076         }
5077
5078         /* Unquiesce VSI */
5079         i40e_unquiesce_vsi(vsi);
5080
5081 exit:
5082         return ret;
5083 }
5084
5085 /**
5086  * i40e_open - Called when a network interface is made active
5087  * @netdev: network interface device structure
5088  *
5089  * The open entry point is called when a network interface is made
5090  * active by the system (IFF_UP).  At this point all resources needed
5091  * for transmit and receive operations are allocated, the interrupt
5092  * handler is registered with the OS, the netdev watchdog subtask is
5093  * enabled, and the stack is notified that the interface is ready.
5094  *
5095  * Returns 0 on success, negative value on failure
5096  **/
5097 int i40e_open(struct net_device *netdev)
5098 {
5099         struct i40e_netdev_priv *np = netdev_priv(netdev);
5100         struct i40e_vsi *vsi = np->vsi;
5101         struct i40e_pf *pf = vsi->back;
5102         int err;
5103
5104         /* disallow open during test or if eeprom is broken */
5105         if (test_bit(__I40E_TESTING, &pf->state) ||
5106             test_bit(__I40E_BAD_EEPROM, &pf->state))
5107                 return -EBUSY;
5108
5109         netif_carrier_off(netdev);
5110
5111         err = i40e_vsi_open(vsi);
5112         if (err)
5113                 return err;
5114
5115         /* configure global TSO hardware offload settings */
5116         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5117                                                        TCP_FLAG_FIN) >> 16);
5118         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5119                                                        TCP_FLAG_FIN |
5120                                                        TCP_FLAG_CWR) >> 16);
5121         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5122
5123 #ifdef CONFIG_I40E_VXLAN
5124         vxlan_get_rx_port(netdev);
5125 #endif
5126
5127         return 0;
5128 }
5129
5130 /**
5131  * i40e_vsi_open -
5132  * @vsi: the VSI to open
5133  *
5134  * Finish initialization of the VSI.
5135  *
5136  * Returns 0 on success, negative value on failure
5137  **/
5138 int i40e_vsi_open(struct i40e_vsi *vsi)
5139 {
5140         struct i40e_pf *pf = vsi->back;
5141         char int_name[I40E_INT_NAME_STR_LEN];
5142         int err;
5143
5144         /* allocate descriptors */
5145         err = i40e_vsi_setup_tx_resources(vsi);
5146         if (err)
5147                 goto err_setup_tx;
5148         err = i40e_vsi_setup_rx_resources(vsi);
5149         if (err)
5150                 goto err_setup_rx;
5151
5152         err = i40e_vsi_configure(vsi);
5153         if (err)
5154                 goto err_setup_rx;
5155
5156         if (vsi->netdev) {
5157                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5158                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5159                 err = i40e_vsi_request_irq(vsi, int_name);
5160                 if (err)
5161                         goto err_setup_rx;
5162
5163                 /* Notify the stack of the actual queue counts. */
5164                 err = netif_set_real_num_tx_queues(vsi->netdev,
5165                                                    vsi->num_queue_pairs);
5166                 if (err)
5167                         goto err_set_queues;
5168
5169                 err = netif_set_real_num_rx_queues(vsi->netdev,
5170                                                    vsi->num_queue_pairs);
5171                 if (err)
5172                         goto err_set_queues;
5173
5174         } else if (vsi->type == I40E_VSI_FDIR) {
5175                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5176                          dev_driver_string(&pf->pdev->dev),
5177                          dev_name(&pf->pdev->dev));
5178                 err = i40e_vsi_request_irq(vsi, int_name);
5179
5180         } else {
5181                 err = -EINVAL;
5182                 goto err_setup_rx;
5183         }
5184
5185         err = i40e_up_complete(vsi);
5186         if (err)
5187                 goto err_up_complete;
5188
5189         return 0;
5190
5191 err_up_complete:
5192         i40e_down(vsi);
5193 err_set_queues:
5194         i40e_vsi_free_irq(vsi);
5195 err_setup_rx:
5196         i40e_vsi_free_rx_resources(vsi);
5197 err_setup_tx:
5198         i40e_vsi_free_tx_resources(vsi);
5199         if (vsi == pf->vsi[pf->lan_vsi])
5200                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5201
5202         return err;
5203 }
5204
5205 /**
5206  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5207  * @pf: Pointer to PF
5208  *
5209  * This function destroys the hlist where all the Flow Director
5210  * filters were saved.
5211  **/
5212 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5213 {
5214         struct i40e_fdir_filter *filter;
5215         struct hlist_node *node2;
5216
5217         hlist_for_each_entry_safe(filter, node2,
5218                                   &pf->fdir_filter_list, fdir_node) {
5219                 hlist_del(&filter->fdir_node);
5220                 kfree(filter);
5221         }
5222         pf->fdir_pf_active_filters = 0;
5223 }
5224
5225 /**
5226  * i40e_close - Disables a network interface
5227  * @netdev: network interface device structure
5228  *
5229  * The close entry point is called when an interface is de-activated
5230  * by the OS.  The hardware is still under the driver's control, but
5231  * this netdev interface is disabled.
5232  *
5233  * Returns 0, this is not allowed to fail
5234  **/
5235 #ifdef I40E_FCOE
5236 int i40e_close(struct net_device *netdev)
5237 #else
5238 static int i40e_close(struct net_device *netdev)
5239 #endif
5240 {
5241         struct i40e_netdev_priv *np = netdev_priv(netdev);
5242         struct i40e_vsi *vsi = np->vsi;
5243
5244         i40e_vsi_close(vsi);
5245
5246         return 0;
5247 }
5248
5249 /**
5250  * i40e_do_reset - Start a PF or Core Reset sequence
5251  * @pf: board private structure
5252  * @reset_flags: which reset is requested
5253  *
5254  * The essential difference in resets is that the PF Reset
5255  * doesn't clear the packet buffers, doesn't reset the PE
5256  * firmware, and doesn't bother the other PFs on the chip.
5257  **/
5258 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5259 {
5260         u32 val;
5261
5262         WARN_ON(in_interrupt());
5263
5264         if (i40e_check_asq_alive(&pf->hw))
5265                 i40e_vc_notify_reset(pf);
5266
5267         /* do the biggest reset indicated */
5268         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5269
5270                 /* Request a Global Reset
5271                  *
5272                  * This will start the chip's countdown to the actual full
5273                  * chip reset event, and a warning interrupt to be sent
5274                  * to all PFs, including the requestor.  Our handler
5275                  * for the warning interrupt will deal with the shutdown
5276                  * and recovery of the switch setup.
5277                  */
5278                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5279                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5280                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5281                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5282
5283         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5284
5285                 /* Request a Core Reset
5286                  *
5287                  * Same as Global Reset, except does *not* include the MAC/PHY
5288                  */
5289                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5290                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5291                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5292                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5293                 i40e_flush(&pf->hw);
5294
5295         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5296
5297                 /* Request a PF Reset
5298                  *
5299                  * Resets only the PF-specific registers
5300                  *
5301                  * This goes directly to the tear-down and rebuild of
5302                  * the switch, since we need to do all the recovery as
5303                  * for the Core Reset.
5304                  */
5305                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5306                 i40e_handle_reset_warning(pf);
5307
5308         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5309                 int v;
5310
5311                 /* Find the VSI(s) that requested a re-init */
5312                 dev_info(&pf->pdev->dev,
5313                          "VSI reinit requested\n");
5314                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5315                         struct i40e_vsi *vsi = pf->vsi[v];
5316                         if (vsi != NULL &&
5317                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5318                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5319                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5320                         }
5321                 }
5322
5323                 /* no further action needed, so return now */
5324                 return;
5325         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5326                 int v;
5327
5328                 /* Find the VSI(s) that needs to be brought down */
5329                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5330                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5331                         struct i40e_vsi *vsi = pf->vsi[v];
5332                         if (vsi != NULL &&
5333                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5334                                 set_bit(__I40E_DOWN, &vsi->state);
5335                                 i40e_down(vsi);
5336                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5337                         }
5338                 }
5339
5340                 /* no further action needed, so return now */
5341                 return;
5342         } else {
5343                 dev_info(&pf->pdev->dev,
5344                          "bad reset request 0x%08x\n", reset_flags);
5345                 return;
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                 /* If the flush is happening too quick and we have mostly
5685                  * SB rules we should not re-enable ATR for some time.
5686                  */
5687                 min_flush_time = pf->fd_flush_timestamp
5688                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5689                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5690
5691                 if (!(time_after(jiffies, min_flush_time)) &&
5692                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5693                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5694                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5695                         disable_atr = true;
5696                 }
5697
5698                 pf->fd_flush_timestamp = jiffies;
5699                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5700                 /* flush all filters */
5701                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5702                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5703                 i40e_flush(&pf->hw);
5704                 pf->fd_flush_cnt++;
5705                 pf->fd_add_err = 0;
5706                 do {
5707                         /* Check FD flush status every 5-6msec */
5708                         usleep_range(5000, 6000);
5709                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5710                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5711                                 break;
5712                 } while (flush_wait_retry--);
5713                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5714                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5715                 } else {
5716                         /* replay sideband filters */
5717                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5718                         if (!disable_atr)
5719                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5720                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5721                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5722                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5723                 }
5724         }
5725 }
5726
5727 /**
5728  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5729  * @pf: board private structure
5730  **/
5731 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5732 {
5733         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5734 }
5735
5736 /* We can see up to 256 filter programming desc in transit if the filters are
5737  * being applied really fast; before we see the first
5738  * filter miss error on Rx queue 0. Accumulating enough error messages before
5739  * reacting will make sure we don't cause flush too often.
5740  */
5741 #define I40E_MAX_FD_PROGRAM_ERROR 256
5742
5743 /**
5744  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5745  * @pf: board private structure
5746  **/
5747 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5748 {
5749
5750         /* if interface is down do nothing */
5751         if (test_bit(__I40E_DOWN, &pf->state))
5752                 return;
5753
5754         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5755                 return;
5756
5757         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5758                 i40e_fdir_flush_and_replay(pf);
5759
5760         i40e_fdir_check_and_reenable(pf);
5761
5762 }
5763
5764 /**
5765  * i40e_vsi_link_event - notify VSI of a link event
5766  * @vsi: vsi to be notified
5767  * @link_up: link up or down
5768  **/
5769 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5770 {
5771         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5772                 return;
5773
5774         switch (vsi->type) {
5775         case I40E_VSI_MAIN:
5776 #ifdef I40E_FCOE
5777         case I40E_VSI_FCOE:
5778 #endif
5779                 if (!vsi->netdev || !vsi->netdev_registered)
5780                         break;
5781
5782                 if (link_up) {
5783                         netif_carrier_on(vsi->netdev);
5784                         netif_tx_wake_all_queues(vsi->netdev);
5785                 } else {
5786                         netif_carrier_off(vsi->netdev);
5787                         netif_tx_stop_all_queues(vsi->netdev);
5788                 }
5789                 break;
5790
5791         case I40E_VSI_SRIOV:
5792         case I40E_VSI_VMDQ2:
5793         case I40E_VSI_CTRL:
5794         case I40E_VSI_MIRROR:
5795         default:
5796                 /* there is no notification for other VSIs */
5797                 break;
5798         }
5799 }
5800
5801 /**
5802  * i40e_veb_link_event - notify elements on the veb of a link event
5803  * @veb: veb to be notified
5804  * @link_up: link up or down
5805  **/
5806 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5807 {
5808         struct i40e_pf *pf;
5809         int i;
5810
5811         if (!veb || !veb->pf)
5812                 return;
5813         pf = veb->pf;
5814
5815         /* depth first... */
5816         for (i = 0; i < I40E_MAX_VEB; i++)
5817                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5818                         i40e_veb_link_event(pf->veb[i], link_up);
5819
5820         /* ... now the local VSIs */
5821         for (i = 0; i < pf->num_alloc_vsi; i++)
5822                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5823                         i40e_vsi_link_event(pf->vsi[i], link_up);
5824 }
5825
5826 /**
5827  * i40e_link_event - Update netif_carrier status
5828  * @pf: board private structure
5829  **/
5830 static void i40e_link_event(struct i40e_pf *pf)
5831 {
5832         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5833         u8 new_link_speed, old_link_speed;
5834         i40e_status status;
5835         bool new_link, old_link;
5836
5837         /* set this to force the get_link_status call to refresh state */
5838         pf->hw.phy.get_link_info = true;
5839
5840         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5841
5842         status = i40e_get_link_status(&pf->hw, &new_link);
5843         if (status) {
5844                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
5845                         status);
5846                 return;
5847         }
5848
5849         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5850         new_link_speed = pf->hw.phy.link_info.link_speed;
5851
5852         if (new_link == old_link &&
5853             new_link_speed == old_link_speed &&
5854             (test_bit(__I40E_DOWN, &vsi->state) ||
5855              new_link == netif_carrier_ok(vsi->netdev)))
5856                 return;
5857
5858         if (!test_bit(__I40E_DOWN, &vsi->state))
5859                 i40e_print_link_message(vsi, new_link);
5860
5861         /* Notify the base of the switch tree connected to
5862          * the link.  Floating VEBs are not notified.
5863          */
5864         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5865                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5866         else
5867                 i40e_vsi_link_event(vsi, new_link);
5868
5869         if (pf->vf)
5870                 i40e_vc_notify_link_state(pf);
5871
5872         if (pf->flags & I40E_FLAG_PTP)
5873                 i40e_ptp_set_increment(pf);
5874 }
5875
5876 /**
5877  * i40e_watchdog_subtask - periodic checks not using event driven response
5878  * @pf: board private structure
5879  **/
5880 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5881 {
5882         int i;
5883
5884         /* if interface is down do nothing */
5885         if (test_bit(__I40E_DOWN, &pf->state) ||
5886             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5887                 return;
5888
5889         /* make sure we don't do these things too often */
5890         if (time_before(jiffies, (pf->service_timer_previous +
5891                                   pf->service_timer_period)))
5892                 return;
5893         pf->service_timer_previous = jiffies;
5894
5895         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
5896                 i40e_link_event(pf);
5897
5898         /* Update the stats for active netdevs so the network stack
5899          * can look at updated numbers whenever it cares to
5900          */
5901         for (i = 0; i < pf->num_alloc_vsi; i++)
5902                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5903                         i40e_update_stats(pf->vsi[i]);
5904
5905         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5906                 /* Update the stats for the active switching components */
5907                 for (i = 0; i < I40E_MAX_VEB; i++)
5908                         if (pf->veb[i])
5909                                 i40e_update_veb_stats(pf->veb[i]);
5910         }
5911
5912         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5913 }
5914
5915 /**
5916  * i40e_reset_subtask - Set up for resetting the device and driver
5917  * @pf: board private structure
5918  **/
5919 static void i40e_reset_subtask(struct i40e_pf *pf)
5920 {
5921         u32 reset_flags = 0;
5922
5923         rtnl_lock();
5924         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5925                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5926                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5927         }
5928         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5929                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5930                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5931         }
5932         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5933                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5934                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5935         }
5936         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5937                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5938                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5939         }
5940         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5941                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5942                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5943         }
5944
5945         /* If there's a recovery already waiting, it takes
5946          * precedence before starting a new reset sequence.
5947          */
5948         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5949                 i40e_handle_reset_warning(pf);
5950                 goto unlock;
5951         }
5952
5953         /* If we're already down or resetting, just bail */
5954         if (reset_flags &&
5955             !test_bit(__I40E_DOWN, &pf->state) &&
5956             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5957                 i40e_do_reset(pf, reset_flags);
5958
5959 unlock:
5960         rtnl_unlock();
5961 }
5962
5963 /**
5964  * i40e_handle_link_event - Handle link event
5965  * @pf: board private structure
5966  * @e: event info posted on ARQ
5967  **/
5968 static void i40e_handle_link_event(struct i40e_pf *pf,
5969                                    struct i40e_arq_event_info *e)
5970 {
5971         struct i40e_hw *hw = &pf->hw;
5972         struct i40e_aqc_get_link_status *status =
5973                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5974
5975         /* save off old link status information */
5976         hw->phy.link_info_old = hw->phy.link_info;
5977
5978         /* Do a new status request to re-enable LSE reporting
5979          * and load new status information into the hw struct
5980          * This completely ignores any state information
5981          * in the ARQ event info, instead choosing to always
5982          * issue the AQ update link status command.
5983          */
5984         i40e_link_event(pf);
5985
5986         /* check for unqualified module, if link is down */
5987         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5988             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5989             (!(status->link_info & I40E_AQ_LINK_UP)))
5990                 dev_err(&pf->pdev->dev,
5991                         "The driver failed to link because an unqualified module was detected.\n");
5992 }
5993
5994 /**
5995  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5996  * @pf: board private structure
5997  **/
5998 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5999 {
6000         struct i40e_arq_event_info event;
6001         struct i40e_hw *hw = &pf->hw;
6002         u16 pending, i = 0;
6003         i40e_status ret;
6004         u16 opcode;
6005         u32 oldval;
6006         u32 val;
6007
6008         /* Do not run clean AQ when PF reset fails */
6009         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6010                 return;
6011
6012         /* check for error indications */
6013         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6014         oldval = val;
6015         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6016                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6017                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6018         }
6019         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6020                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6021                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6022         }
6023         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6024                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6025                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6026         }
6027         if (oldval != val)
6028                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6029
6030         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6031         oldval = val;
6032         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6033                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6034                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6035         }
6036         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6037                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6038                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6039         }
6040         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6041                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6042                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6043         }
6044         if (oldval != val)
6045                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6046
6047         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6048         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6049         if (!event.msg_buf)
6050                 return;
6051
6052         do {
6053                 ret = i40e_clean_arq_element(hw, &event, &pending);
6054                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6055                         break;
6056                 else if (ret) {
6057                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6058                         break;
6059                 }
6060
6061                 opcode = le16_to_cpu(event.desc.opcode);
6062                 switch (opcode) {
6063
6064                 case i40e_aqc_opc_get_link_status:
6065                         i40e_handle_link_event(pf, &event);
6066                         break;
6067                 case i40e_aqc_opc_send_msg_to_pf:
6068                         ret = i40e_vc_process_vf_msg(pf,
6069                                         le16_to_cpu(event.desc.retval),
6070                                         le32_to_cpu(event.desc.cookie_high),
6071                                         le32_to_cpu(event.desc.cookie_low),
6072                                         event.msg_buf,
6073                                         event.msg_len);
6074                         break;
6075                 case i40e_aqc_opc_lldp_update_mib:
6076                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6077 #ifdef CONFIG_I40E_DCB
6078                         rtnl_lock();
6079                         ret = i40e_handle_lldp_event(pf, &event);
6080                         rtnl_unlock();
6081 #endif /* CONFIG_I40E_DCB */
6082                         break;
6083                 case i40e_aqc_opc_event_lan_overflow:
6084                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6085                         i40e_handle_lan_overflow_event(pf, &event);
6086                         break;
6087                 case i40e_aqc_opc_send_msg_to_peer:
6088                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6089                         break;
6090                 case i40e_aqc_opc_nvm_erase:
6091                 case i40e_aqc_opc_nvm_update:
6092                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6093                         break;
6094                 default:
6095                         dev_info(&pf->pdev->dev,
6096                                  "ARQ Error: Unknown event 0x%04x received\n",
6097                                  opcode);
6098                         break;
6099                 }
6100         } while (pending && (i++ < pf->adminq_work_limit));
6101
6102         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6103         /* re-enable Admin queue interrupt cause */
6104         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6105         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6106         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6107         i40e_flush(hw);
6108
6109         kfree(event.msg_buf);
6110 }
6111
6112 /**
6113  * i40e_verify_eeprom - make sure eeprom is good to use
6114  * @pf: board private structure
6115  **/
6116 static void i40e_verify_eeprom(struct i40e_pf *pf)
6117 {
6118         int err;
6119
6120         err = i40e_diag_eeprom_test(&pf->hw);
6121         if (err) {
6122                 /* retry in case of garbage read */
6123                 err = i40e_diag_eeprom_test(&pf->hw);
6124                 if (err) {
6125                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6126                                  err);
6127                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6128                 }
6129         }
6130
6131         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6132                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6133                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6134         }
6135 }
6136
6137 /**
6138  * i40e_enable_pf_switch_lb
6139  * @pf: pointer to the PF structure
6140  *
6141  * enable switch loop back or die - no point in a return value
6142  **/
6143 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6144 {
6145         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6146         struct i40e_vsi_context ctxt;
6147         int ret;
6148
6149         ctxt.seid = pf->main_vsi_seid;
6150         ctxt.pf_num = pf->hw.pf_id;
6151         ctxt.vf_num = 0;
6152         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6153         if (ret) {
6154                 dev_info(&pf->pdev->dev,
6155                          "couldn't get PF vsi config, err %s aq_err %s\n",
6156                          i40e_stat_str(&pf->hw, ret),
6157                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6158                 return;
6159         }
6160         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6161         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6162         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6163
6164         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6165         if (ret) {
6166                 dev_info(&pf->pdev->dev,
6167                          "update vsi switch failed, err %s aq_err %s\n",
6168                          i40e_stat_str(&pf->hw, ret),
6169                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6170         }
6171 }
6172
6173 /**
6174  * i40e_disable_pf_switch_lb
6175  * @pf: pointer to the PF structure
6176  *
6177  * disable switch loop back or die - no point in a return value
6178  **/
6179 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6180 {
6181         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6182         struct i40e_vsi_context ctxt;
6183         int ret;
6184
6185         ctxt.seid = pf->main_vsi_seid;
6186         ctxt.pf_num = pf->hw.pf_id;
6187         ctxt.vf_num = 0;
6188         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6189         if (ret) {
6190                 dev_info(&pf->pdev->dev,
6191                          "couldn't get PF vsi config, err %s aq_err %s\n",
6192                          i40e_stat_str(&pf->hw, ret),
6193                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6194                 return;
6195         }
6196         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6197         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6198         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6199
6200         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6201         if (ret) {
6202                 dev_info(&pf->pdev->dev,
6203                          "update vsi switch failed, err %s aq_err %s\n",
6204                          i40e_stat_str(&pf->hw, ret),
6205                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6206         }
6207 }
6208
6209 /**
6210  * i40e_config_bridge_mode - Configure the HW bridge mode
6211  * @veb: pointer to the bridge instance
6212  *
6213  * Configure the loop back mode for the LAN VSI that is downlink to the
6214  * specified HW bridge instance. It is expected this function is called
6215  * when a new HW bridge is instantiated.
6216  **/
6217 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6218 {
6219         struct i40e_pf *pf = veb->pf;
6220
6221         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6222                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6223         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6224                 i40e_disable_pf_switch_lb(pf);
6225         else
6226                 i40e_enable_pf_switch_lb(pf);
6227 }
6228
6229 /**
6230  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6231  * @veb: pointer to the VEB instance
6232  *
6233  * This is a recursive function that first builds the attached VSIs then
6234  * recurses in to build the next layer of VEB.  We track the connections
6235  * through our own index numbers because the seid's from the HW could
6236  * change across the reset.
6237  **/
6238 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6239 {
6240         struct i40e_vsi *ctl_vsi = NULL;
6241         struct i40e_pf *pf = veb->pf;
6242         int v, veb_idx;
6243         int ret;
6244
6245         /* build VSI that owns this VEB, temporarily attached to base VEB */
6246         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6247                 if (pf->vsi[v] &&
6248                     pf->vsi[v]->veb_idx == veb->idx &&
6249                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6250                         ctl_vsi = pf->vsi[v];
6251                         break;
6252                 }
6253         }
6254         if (!ctl_vsi) {
6255                 dev_info(&pf->pdev->dev,
6256                          "missing owner VSI for veb_idx %d\n", veb->idx);
6257                 ret = -ENOENT;
6258                 goto end_reconstitute;
6259         }
6260         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6261                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6262         ret = i40e_add_vsi(ctl_vsi);
6263         if (ret) {
6264                 dev_info(&pf->pdev->dev,
6265                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6266                          veb->idx, ret);
6267                 goto end_reconstitute;
6268         }
6269         i40e_vsi_reset_stats(ctl_vsi);
6270
6271         /* create the VEB in the switch and move the VSI onto the VEB */
6272         ret = i40e_add_veb(veb, ctl_vsi);
6273         if (ret)
6274                 goto end_reconstitute;
6275
6276         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6277                 veb->bridge_mode = BRIDGE_MODE_VEB;
6278         else
6279                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6280         i40e_config_bridge_mode(veb);
6281
6282         /* create the remaining VSIs attached to this VEB */
6283         for (v = 0; v < pf->num_alloc_vsi; v++) {
6284                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6285                         continue;
6286
6287                 if (pf->vsi[v]->veb_idx == veb->idx) {
6288                         struct i40e_vsi *vsi = pf->vsi[v];
6289                         vsi->uplink_seid = veb->seid;
6290                         ret = i40e_add_vsi(vsi);
6291                         if (ret) {
6292                                 dev_info(&pf->pdev->dev,
6293                                          "rebuild of vsi_idx %d failed: %d\n",
6294                                          v, ret);
6295                                 goto end_reconstitute;
6296                         }
6297                         i40e_vsi_reset_stats(vsi);
6298                 }
6299         }
6300
6301         /* create any VEBs attached to this VEB - RECURSION */
6302         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6303                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6304                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6305                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6306                         if (ret)
6307                                 break;
6308                 }
6309         }
6310
6311 end_reconstitute:
6312         return ret;
6313 }
6314
6315 /**
6316  * i40e_get_capabilities - get info about the HW
6317  * @pf: the PF struct
6318  **/
6319 static int i40e_get_capabilities(struct i40e_pf *pf)
6320 {
6321         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6322         u16 data_size;
6323         int buf_len;
6324         int err;
6325
6326         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6327         do {
6328                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6329                 if (!cap_buf)
6330                         return -ENOMEM;
6331
6332                 /* this loads the data into the hw struct for us */
6333                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6334                                             &data_size,
6335                                             i40e_aqc_opc_list_func_capabilities,
6336                                             NULL);
6337                 /* data loaded, buffer no longer needed */
6338                 kfree(cap_buf);
6339
6340                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6341                         /* retry with a larger buffer */
6342                         buf_len = data_size;
6343                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6344                         dev_info(&pf->pdev->dev,
6345                                  "capability discovery failed, err %s aq_err %s\n",
6346                                  i40e_stat_str(&pf->hw, err),
6347                                  i40e_aq_str(&pf->hw,
6348                                              pf->hw.aq.asq_last_status));
6349                         return -ENODEV;
6350                 }
6351         } while (err);
6352
6353         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6354             (pf->hw.aq.fw_maj_ver < 2)) {
6355                 pf->hw.func_caps.num_msix_vectors++;
6356                 pf->hw.func_caps.num_msix_vectors_vf++;
6357         }
6358
6359         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6360                 dev_info(&pf->pdev->dev,
6361                          "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",
6362                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6363                          pf->hw.func_caps.num_msix_vectors,
6364                          pf->hw.func_caps.num_msix_vectors_vf,
6365                          pf->hw.func_caps.fd_filters_guaranteed,
6366                          pf->hw.func_caps.fd_filters_best_effort,
6367                          pf->hw.func_caps.num_tx_qp,
6368                          pf->hw.func_caps.num_vsis);
6369
6370 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6371                        + pf->hw.func_caps.num_vfs)
6372         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6373                 dev_info(&pf->pdev->dev,
6374                          "got num_vsis %d, setting num_vsis to %d\n",
6375                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6376                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6377         }
6378
6379         return 0;
6380 }
6381
6382 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6383
6384 /**
6385  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6386  * @pf: board private structure
6387  **/
6388 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6389 {
6390         struct i40e_vsi *vsi;
6391         int i;
6392
6393         /* quick workaround for an NVM issue that leaves a critical register
6394          * uninitialized
6395          */
6396         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6397                 static const u32 hkey[] = {
6398                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6399                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6400                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6401                         0x95b3a76d};
6402
6403                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6404                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6405         }
6406
6407         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6408                 return;
6409
6410         /* find existing VSI and see if it needs configuring */
6411         vsi = NULL;
6412         for (i = 0; i < pf->num_alloc_vsi; i++) {
6413                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6414                         vsi = pf->vsi[i];
6415                         break;
6416                 }
6417         }
6418
6419         /* create a new VSI if none exists */
6420         if (!vsi) {
6421                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6422                                      pf->vsi[pf->lan_vsi]->seid, 0);
6423                 if (!vsi) {
6424                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6425                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6426                         return;
6427                 }
6428         }
6429
6430         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6431 }
6432
6433 /**
6434  * i40e_fdir_teardown - release the Flow Director resources
6435  * @pf: board private structure
6436  **/
6437 static void i40e_fdir_teardown(struct i40e_pf *pf)
6438 {
6439         int i;
6440
6441         i40e_fdir_filter_exit(pf);
6442         for (i = 0; i < pf->num_alloc_vsi; i++) {
6443                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6444                         i40e_vsi_release(pf->vsi[i]);
6445                         break;
6446                 }
6447         }
6448 }
6449
6450 /**
6451  * i40e_prep_for_reset - prep for the core to reset
6452  * @pf: board private structure
6453  *
6454  * Close up the VFs and other things in prep for PF Reset.
6455   **/
6456 static void i40e_prep_for_reset(struct i40e_pf *pf)
6457 {
6458         struct i40e_hw *hw = &pf->hw;
6459         i40e_status ret = 0;
6460         u32 v;
6461
6462         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6463         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6464                 return;
6465
6466         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6467
6468         /* quiesce the VSIs and their queues that are not already DOWN */
6469         i40e_pf_quiesce_all_vsi(pf);
6470
6471         for (v = 0; v < pf->num_alloc_vsi; v++) {
6472                 if (pf->vsi[v])
6473                         pf->vsi[v]->seid = 0;
6474         }
6475
6476         i40e_shutdown_adminq(&pf->hw);
6477
6478         /* call shutdown HMC */
6479         if (hw->hmc.hmc_obj) {
6480                 ret = i40e_shutdown_lan_hmc(hw);
6481                 if (ret)
6482                         dev_warn(&pf->pdev->dev,
6483                                  "shutdown_lan_hmc failed: %d\n", ret);
6484         }
6485 }
6486
6487 /**
6488  * i40e_send_version - update firmware with driver version
6489  * @pf: PF struct
6490  */
6491 static void i40e_send_version(struct i40e_pf *pf)
6492 {
6493         struct i40e_driver_version dv;
6494
6495         dv.major_version = DRV_VERSION_MAJOR;
6496         dv.minor_version = DRV_VERSION_MINOR;
6497         dv.build_version = DRV_VERSION_BUILD;
6498         dv.subbuild_version = 0;
6499         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6500         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6501 }
6502
6503 /**
6504  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6505  * @pf: board private structure
6506  * @reinit: if the Main VSI needs to re-initialized.
6507  **/
6508 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6509 {
6510         struct i40e_hw *hw = &pf->hw;
6511         u8 set_fc_aq_fail = 0;
6512         i40e_status ret;
6513         u32 v;
6514
6515         /* Now we wait for GRST to settle out.
6516          * We don't have to delete the VEBs or VSIs from the hw switch
6517          * because the reset will make them disappear.
6518          */
6519         ret = i40e_pf_reset(hw);
6520         if (ret) {
6521                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6522                 set_bit(__I40E_RESET_FAILED, &pf->state);
6523                 goto clear_recovery;
6524         }
6525         pf->pfr_count++;
6526
6527         if (test_bit(__I40E_DOWN, &pf->state))
6528                 goto clear_recovery;
6529         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6530
6531         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6532         ret = i40e_init_adminq(&pf->hw);
6533         if (ret) {
6534                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6535                          i40e_stat_str(&pf->hw, ret),
6536                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6537                 goto clear_recovery;
6538         }
6539
6540         /* re-verify the eeprom if we just had an EMP reset */
6541         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6542                 i40e_verify_eeprom(pf);
6543
6544         i40e_clear_pxe_mode(hw);
6545         ret = i40e_get_capabilities(pf);
6546         if (ret)
6547                 goto end_core_reset;
6548
6549         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6550                                 hw->func_caps.num_rx_qp,
6551                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6552         if (ret) {
6553                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6554                 goto end_core_reset;
6555         }
6556         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6557         if (ret) {
6558                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6559                 goto end_core_reset;
6560         }
6561
6562 #ifdef CONFIG_I40E_DCB
6563         ret = i40e_init_pf_dcb(pf);
6564         if (ret) {
6565                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6566                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6567                 /* Continue without DCB enabled */
6568         }
6569 #endif /* CONFIG_I40E_DCB */
6570 #ifdef I40E_FCOE
6571         i40e_init_pf_fcoe(pf);
6572
6573 #endif
6574         /* do basic switch setup */
6575         ret = i40e_setup_pf_switch(pf, reinit);
6576         if (ret)
6577                 goto end_core_reset;
6578
6579         /* driver is only interested in link up/down and module qualification
6580          * reports from firmware
6581          */
6582         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6583                                        I40E_AQ_EVENT_LINK_UPDOWN |
6584                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6585         if (ret)
6586                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6587                          i40e_stat_str(&pf->hw, ret),
6588                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6589
6590         /* make sure our flow control settings are restored */
6591         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6592         if (ret)
6593                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6594                          i40e_stat_str(&pf->hw, ret),
6595                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6596
6597         /* Rebuild the VSIs and VEBs that existed before reset.
6598          * They are still in our local switch element arrays, so only
6599          * need to rebuild the switch model in the HW.
6600          *
6601          * If there were VEBs but the reconstitution failed, we'll try
6602          * try to recover minimal use by getting the basic PF VSI working.
6603          */
6604         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6605                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6606                 /* find the one VEB connected to the MAC, and find orphans */
6607                 for (v = 0; v < I40E_MAX_VEB; v++) {
6608                         if (!pf->veb[v])
6609                                 continue;
6610
6611                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6612                             pf->veb[v]->uplink_seid == 0) {
6613                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6614
6615                                 if (!ret)
6616                                         continue;
6617
6618                                 /* If Main VEB failed, we're in deep doodoo,
6619                                  * so give up rebuilding the switch and set up
6620                                  * for minimal rebuild of PF VSI.
6621                                  * If orphan failed, we'll report the error
6622                                  * but try to keep going.
6623                                  */
6624                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6625                                         dev_info(&pf->pdev->dev,
6626                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6627                                                  ret);
6628                                         pf->vsi[pf->lan_vsi]->uplink_seid
6629                                                                 = pf->mac_seid;
6630                                         break;
6631                                 } else if (pf->veb[v]->uplink_seid == 0) {
6632                                         dev_info(&pf->pdev->dev,
6633                                                  "rebuild of orphan VEB failed: %d\n",
6634                                                  ret);
6635                                 }
6636                         }
6637                 }
6638         }
6639
6640         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6641                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6642                 /* no VEB, so rebuild only the Main VSI */
6643                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6644                 if (ret) {
6645                         dev_info(&pf->pdev->dev,
6646                                  "rebuild of Main VSI failed: %d\n", ret);
6647                         goto end_core_reset;
6648                 }
6649         }
6650
6651         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6652             (pf->hw.aq.fw_maj_ver < 4)) {
6653                 msleep(75);
6654                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6655                 if (ret)
6656                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6657                                  i40e_stat_str(&pf->hw, ret),
6658                                  i40e_aq_str(&pf->hw,
6659                                              pf->hw.aq.asq_last_status));
6660         }
6661         /* reinit the misc interrupt */
6662         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6663                 ret = i40e_setup_misc_vector(pf);
6664
6665         /* restart the VSIs that were rebuilt and running before the reset */
6666         i40e_pf_unquiesce_all_vsi(pf);
6667
6668         if (pf->num_alloc_vfs) {
6669                 for (v = 0; v < pf->num_alloc_vfs; v++)
6670                         i40e_reset_vf(&pf->vf[v], true);
6671         }
6672
6673         /* tell the firmware that we're starting */
6674         i40e_send_version(pf);
6675
6676 end_core_reset:
6677         clear_bit(__I40E_RESET_FAILED, &pf->state);
6678 clear_recovery:
6679         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6680 }
6681
6682 /**
6683  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6684  * @pf: board private structure
6685  *
6686  * Close up the VFs and other things in prep for a Core Reset,
6687  * then get ready to rebuild the world.
6688  **/
6689 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6690 {
6691         i40e_prep_for_reset(pf);
6692         i40e_reset_and_rebuild(pf, false);
6693 }
6694
6695 /**
6696  * i40e_handle_mdd_event
6697  * @pf: pointer to the PF structure
6698  *
6699  * Called from the MDD irq handler to identify possibly malicious vfs
6700  **/
6701 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6702 {
6703         struct i40e_hw *hw = &pf->hw;
6704         bool mdd_detected = false;
6705         bool pf_mdd_detected = false;
6706         struct i40e_vf *vf;
6707         u32 reg;
6708         int i;
6709
6710         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6711                 return;
6712
6713         /* find what triggered the MDD event */
6714         reg = rd32(hw, I40E_GL_MDET_TX);
6715         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6716                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6717                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6718                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6719                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6720                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6721                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6722                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6723                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6724                                 pf->hw.func_caps.base_queue;
6725                 if (netif_msg_tx_err(pf))
6726                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6727                                  event, queue, pf_num, vf_num);
6728                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6729                 mdd_detected = true;
6730         }
6731         reg = rd32(hw, I40E_GL_MDET_RX);
6732         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6733                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6734                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6735                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6736                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6737                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6738                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6739                                 pf->hw.func_caps.base_queue;
6740                 if (netif_msg_rx_err(pf))
6741                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6742                                  event, queue, func);
6743                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6744                 mdd_detected = true;
6745         }
6746
6747         if (mdd_detected) {
6748                 reg = rd32(hw, I40E_PF_MDET_TX);
6749                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6750                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6751                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6752                         pf_mdd_detected = true;
6753                 }
6754                 reg = rd32(hw, I40E_PF_MDET_RX);
6755                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6756                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6757                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6758                         pf_mdd_detected = true;
6759                 }
6760                 /* Queue belongs to the PF, initiate a reset */
6761                 if (pf_mdd_detected) {
6762                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6763                         i40e_service_event_schedule(pf);
6764                 }
6765         }
6766
6767         /* see if one of the VFs needs its hand slapped */
6768         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6769                 vf = &(pf->vf[i]);
6770                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6771                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6772                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6773                         vf->num_mdd_events++;
6774                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6775                                  i);
6776                 }
6777
6778                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6779                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6780                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6781                         vf->num_mdd_events++;
6782                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6783                                  i);
6784                 }
6785
6786                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6787                         dev_info(&pf->pdev->dev,
6788                                  "Too many MDD events on VF %d, disabled\n", i);
6789                         dev_info(&pf->pdev->dev,
6790                                  "Use PF Control I/F to re-enable the VF\n");
6791                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6792                 }
6793         }
6794
6795         /* re-enable mdd interrupt cause */
6796         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6797         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6798         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6799         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6800         i40e_flush(hw);
6801 }
6802
6803 #ifdef CONFIG_I40E_VXLAN
6804 /**
6805  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6806  * @pf: board private structure
6807  **/
6808 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6809 {
6810         struct i40e_hw *hw = &pf->hw;
6811         i40e_status ret;
6812         __be16 port;
6813         int i;
6814
6815         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6816                 return;
6817
6818         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6819
6820         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6821                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6822                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6823                         port = pf->vxlan_ports[i];
6824                         if (port)
6825                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6826                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6827                                                      NULL, NULL);
6828                         else
6829                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6830
6831                         if (ret) {
6832                                 dev_info(&pf->pdev->dev,
6833                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6834                                          port ? "add" : "delete",
6835                                          ntohs(port), i,
6836                                          i40e_stat_str(&pf->hw, ret),
6837                                          i40e_aq_str(&pf->hw,
6838                                                     pf->hw.aq.asq_last_status));
6839                                 pf->vxlan_ports[i] = 0;
6840                         }
6841                 }
6842         }
6843 }
6844
6845 #endif
6846 /**
6847  * i40e_service_task - Run the driver's async subtasks
6848  * @work: pointer to work_struct containing our data
6849  **/
6850 static void i40e_service_task(struct work_struct *work)
6851 {
6852         struct i40e_pf *pf = container_of(work,
6853                                           struct i40e_pf,
6854                                           service_task);
6855         unsigned long start_time = jiffies;
6856
6857         /* don't bother with service tasks if a reset is in progress */
6858         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6859                 i40e_service_event_complete(pf);
6860                 return;
6861         }
6862
6863         i40e_detect_recover_hung(pf);
6864         i40e_reset_subtask(pf);
6865         i40e_handle_mdd_event(pf);
6866         i40e_vc_process_vflr_event(pf);
6867         i40e_watchdog_subtask(pf);
6868         i40e_fdir_reinit_subtask(pf);
6869         i40e_sync_filters_subtask(pf);
6870 #ifdef CONFIG_I40E_VXLAN
6871         i40e_sync_vxlan_filters_subtask(pf);
6872 #endif
6873         i40e_clean_adminq_subtask(pf);
6874
6875         i40e_service_event_complete(pf);
6876
6877         /* If the tasks have taken longer than one timer cycle or there
6878          * is more work to be done, reschedule the service task now
6879          * rather than wait for the timer to tick again.
6880          */
6881         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6882             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6883             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6884             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6885                 i40e_service_event_schedule(pf);
6886 }
6887
6888 /**
6889  * i40e_service_timer - timer callback
6890  * @data: pointer to PF struct
6891  **/
6892 static void i40e_service_timer(unsigned long data)
6893 {
6894         struct i40e_pf *pf = (struct i40e_pf *)data;
6895
6896         mod_timer(&pf->service_timer,
6897                   round_jiffies(jiffies + pf->service_timer_period));
6898         i40e_service_event_schedule(pf);
6899 }
6900
6901 /**
6902  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6903  * @vsi: the VSI being configured
6904  **/
6905 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6906 {
6907         struct i40e_pf *pf = vsi->back;
6908
6909         switch (vsi->type) {
6910         case I40E_VSI_MAIN:
6911                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6912                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6913                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6914                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6915                         vsi->num_q_vectors = pf->num_lan_msix;
6916                 else
6917                         vsi->num_q_vectors = 1;
6918
6919                 break;
6920
6921         case I40E_VSI_FDIR:
6922                 vsi->alloc_queue_pairs = 1;
6923                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6924                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6925                 vsi->num_q_vectors = 1;
6926                 break;
6927
6928         case I40E_VSI_VMDQ2:
6929                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6930                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6931                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6932                 vsi->num_q_vectors = pf->num_vmdq_msix;
6933                 break;
6934
6935         case I40E_VSI_SRIOV:
6936                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6937                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6938                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6939                 break;
6940
6941 #ifdef I40E_FCOE
6942         case I40E_VSI_FCOE:
6943                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6944                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6945                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6946                 vsi->num_q_vectors = pf->num_fcoe_msix;
6947                 break;
6948
6949 #endif /* I40E_FCOE */
6950         default:
6951                 WARN_ON(1);
6952                 return -ENODATA;
6953         }
6954
6955         return 0;
6956 }
6957
6958 /**
6959  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6960  * @type: VSI pointer
6961  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6962  *
6963  * On error: returns error code (negative)
6964  * On success: returns 0
6965  **/
6966 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6967 {
6968         int size;
6969         int ret = 0;
6970
6971         /* allocate memory for both Tx and Rx ring pointers */
6972         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6973         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6974         if (!vsi->tx_rings)
6975                 return -ENOMEM;
6976         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6977
6978         if (alloc_qvectors) {
6979                 /* allocate memory for q_vector pointers */
6980                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6981                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6982                 if (!vsi->q_vectors) {
6983                         ret = -ENOMEM;
6984                         goto err_vectors;
6985                 }
6986         }
6987         return ret;
6988
6989 err_vectors:
6990         kfree(vsi->tx_rings);
6991         return ret;
6992 }
6993
6994 /**
6995  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6996  * @pf: board private structure
6997  * @type: type of VSI
6998  *
6999  * On error: returns error code (negative)
7000  * On success: returns vsi index in PF (positive)
7001  **/
7002 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7003 {
7004         int ret = -ENODEV;
7005         struct i40e_vsi *vsi;
7006         int vsi_idx;
7007         int i;
7008
7009         /* Need to protect the allocation of the VSIs at the PF level */
7010         mutex_lock(&pf->switch_mutex);
7011
7012         /* VSI list may be fragmented if VSI creation/destruction has
7013          * been happening.  We can afford to do a quick scan to look
7014          * for any free VSIs in the list.
7015          *
7016          * find next empty vsi slot, looping back around if necessary
7017          */
7018         i = pf->next_vsi;
7019         while (i < pf->num_alloc_vsi && pf->vsi[i])
7020                 i++;
7021         if (i >= pf->num_alloc_vsi) {
7022                 i = 0;
7023                 while (i < pf->next_vsi && pf->vsi[i])
7024                         i++;
7025         }
7026
7027         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7028                 vsi_idx = i;             /* Found one! */
7029         } else {
7030                 ret = -ENODEV;
7031                 goto unlock_pf;  /* out of VSI slots! */
7032         }
7033         pf->next_vsi = ++i;
7034
7035         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7036         if (!vsi) {
7037                 ret = -ENOMEM;
7038                 goto unlock_pf;
7039         }
7040         vsi->type = type;
7041         vsi->back = pf;
7042         set_bit(__I40E_DOWN, &vsi->state);
7043         vsi->flags = 0;
7044         vsi->idx = vsi_idx;
7045         vsi->rx_itr_setting = pf->rx_itr_default;
7046         vsi->tx_itr_setting = pf->tx_itr_default;
7047         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7048                                 pf->rss_table_size : 64;
7049         vsi->netdev_registered = false;
7050         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7051         INIT_LIST_HEAD(&vsi->mac_filter_list);
7052         vsi->irqs_ready = false;
7053
7054         ret = i40e_set_num_rings_in_vsi(vsi);
7055         if (ret)
7056                 goto err_rings;
7057
7058         ret = i40e_vsi_alloc_arrays(vsi, true);
7059         if (ret)
7060                 goto err_rings;
7061
7062         /* Setup default MSIX irq handler for VSI */
7063         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7064
7065         pf->vsi[vsi_idx] = vsi;
7066         ret = vsi_idx;
7067         goto unlock_pf;
7068
7069 err_rings:
7070         pf->next_vsi = i - 1;
7071         kfree(vsi);
7072 unlock_pf:
7073         mutex_unlock(&pf->switch_mutex);
7074         return ret;
7075 }
7076
7077 /**
7078  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7079  * @type: VSI pointer
7080  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7081  *
7082  * On error: returns error code (negative)
7083  * On success: returns 0
7084  **/
7085 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7086 {
7087         /* free the ring and vector containers */
7088         if (free_qvectors) {
7089                 kfree(vsi->q_vectors);
7090                 vsi->q_vectors = NULL;
7091         }
7092         kfree(vsi->tx_rings);
7093         vsi->tx_rings = NULL;
7094         vsi->rx_rings = NULL;
7095 }
7096
7097 /**
7098  * i40e_vsi_clear - Deallocate the VSI provided
7099  * @vsi: the VSI being un-configured
7100  **/
7101 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7102 {
7103         struct i40e_pf *pf;
7104
7105         if (!vsi)
7106                 return 0;
7107
7108         if (!vsi->back)
7109                 goto free_vsi;
7110         pf = vsi->back;
7111
7112         mutex_lock(&pf->switch_mutex);
7113         if (!pf->vsi[vsi->idx]) {
7114                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7115                         vsi->idx, vsi->idx, vsi, vsi->type);
7116                 goto unlock_vsi;
7117         }
7118
7119         if (pf->vsi[vsi->idx] != vsi) {
7120                 dev_err(&pf->pdev->dev,
7121                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7122                         pf->vsi[vsi->idx]->idx,
7123                         pf->vsi[vsi->idx],
7124                         pf->vsi[vsi->idx]->type,
7125                         vsi->idx, vsi, vsi->type);
7126                 goto unlock_vsi;
7127         }
7128
7129         /* updates the PF for this cleared vsi */
7130         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7131         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7132
7133         i40e_vsi_free_arrays(vsi, true);
7134
7135         pf->vsi[vsi->idx] = NULL;
7136         if (vsi->idx < pf->next_vsi)
7137                 pf->next_vsi = vsi->idx;
7138
7139 unlock_vsi:
7140         mutex_unlock(&pf->switch_mutex);
7141 free_vsi:
7142         kfree(vsi);
7143
7144         return 0;
7145 }
7146
7147 /**
7148  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7149  * @vsi: the VSI being cleaned
7150  **/
7151 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7152 {
7153         int i;
7154
7155         if (vsi->tx_rings && vsi->tx_rings[0]) {
7156                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7157                         kfree_rcu(vsi->tx_rings[i], rcu);
7158                         vsi->tx_rings[i] = NULL;
7159                         vsi->rx_rings[i] = NULL;
7160                 }
7161         }
7162 }
7163
7164 /**
7165  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7166  * @vsi: the VSI being configured
7167  **/
7168 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7169 {
7170         struct i40e_ring *tx_ring, *rx_ring;
7171         struct i40e_pf *pf = vsi->back;
7172         int i;
7173
7174         /* Set basic values in the rings to be used later during open() */
7175         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7176                 /* allocate space for both Tx and Rx in one shot */
7177                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7178                 if (!tx_ring)
7179                         goto err_out;
7180
7181                 tx_ring->queue_index = i;
7182                 tx_ring->reg_idx = vsi->base_queue + i;
7183                 tx_ring->ring_active = false;
7184                 tx_ring->vsi = vsi;
7185                 tx_ring->netdev = vsi->netdev;
7186                 tx_ring->dev = &pf->pdev->dev;
7187                 tx_ring->count = vsi->num_desc;
7188                 tx_ring->size = 0;
7189                 tx_ring->dcb_tc = 0;
7190                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7191                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7192                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7193                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7194                 vsi->tx_rings[i] = tx_ring;
7195
7196                 rx_ring = &tx_ring[1];
7197                 rx_ring->queue_index = i;
7198                 rx_ring->reg_idx = vsi->base_queue + i;
7199                 rx_ring->ring_active = false;
7200                 rx_ring->vsi = vsi;
7201                 rx_ring->netdev = vsi->netdev;
7202                 rx_ring->dev = &pf->pdev->dev;
7203                 rx_ring->count = vsi->num_desc;
7204                 rx_ring->size = 0;
7205                 rx_ring->dcb_tc = 0;
7206                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7207                         set_ring_16byte_desc_enabled(rx_ring);
7208                 else
7209                         clear_ring_16byte_desc_enabled(rx_ring);
7210                 vsi->rx_rings[i] = rx_ring;
7211         }
7212
7213         return 0;
7214
7215 err_out:
7216         i40e_vsi_clear_rings(vsi);
7217         return -ENOMEM;
7218 }
7219
7220 /**
7221  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7222  * @pf: board private structure
7223  * @vectors: the number of MSI-X vectors to request
7224  *
7225  * Returns the number of vectors reserved, or error
7226  **/
7227 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7228 {
7229         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7230                                         I40E_MIN_MSIX, vectors);
7231         if (vectors < 0) {
7232                 dev_info(&pf->pdev->dev,
7233                          "MSI-X vector reservation failed: %d\n", vectors);
7234                 vectors = 0;
7235         }
7236
7237         return vectors;
7238 }
7239
7240 /**
7241  * i40e_init_msix - Setup the MSIX capability
7242  * @pf: board private structure
7243  *
7244  * Work with the OS to set up the MSIX vectors needed.
7245  *
7246  * Returns the number of vectors reserved or negative on failure
7247  **/
7248 static int i40e_init_msix(struct i40e_pf *pf)
7249 {
7250         struct i40e_hw *hw = &pf->hw;
7251         int vectors_left;
7252         int v_budget, i;
7253         int v_actual;
7254
7255         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7256                 return -ENODEV;
7257
7258         /* The number of vectors we'll request will be comprised of:
7259          *   - Add 1 for "other" cause for Admin Queue events, etc.
7260          *   - The number of LAN queue pairs
7261          *      - Queues being used for RSS.
7262          *              We don't need as many as max_rss_size vectors.
7263          *              use rss_size instead in the calculation since that
7264          *              is governed by number of cpus in the system.
7265          *      - assumes symmetric Tx/Rx pairing
7266          *   - The number of VMDq pairs
7267 #ifdef I40E_FCOE
7268          *   - The number of FCOE qps.
7269 #endif
7270          * Once we count this up, try the request.
7271          *
7272          * If we can't get what we want, we'll simplify to nearly nothing
7273          * and try again.  If that still fails, we punt.
7274          */
7275         vectors_left = hw->func_caps.num_msix_vectors;
7276         v_budget = 0;
7277
7278         /* reserve one vector for miscellaneous handler */
7279         if (vectors_left) {
7280                 v_budget++;
7281                 vectors_left--;
7282         }
7283
7284         /* reserve vectors for the main PF traffic queues */
7285         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7286         vectors_left -= pf->num_lan_msix;
7287         v_budget += pf->num_lan_msix;
7288
7289         /* reserve one vector for sideband flow director */
7290         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7291                 if (vectors_left) {
7292                         v_budget++;
7293                         vectors_left--;
7294                 } else {
7295                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7296                 }
7297         }
7298
7299 #ifdef I40E_FCOE
7300         /* can we reserve enough for FCoE? */
7301         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7302                 if (!vectors_left)
7303                         pf->num_fcoe_msix = 0;
7304                 else if (vectors_left >= pf->num_fcoe_qps)
7305                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7306                 else
7307                         pf->num_fcoe_msix = 1;
7308                 v_budget += pf->num_fcoe_msix;
7309                 vectors_left -= pf->num_fcoe_msix;
7310         }
7311
7312 #endif
7313         /* any vectors left over go for VMDq support */
7314         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7315                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7316                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7317
7318                 /* if we're short on vectors for what's desired, we limit
7319                  * the queues per vmdq.  If this is still more than are
7320                  * available, the user will need to change the number of
7321                  * queues/vectors used by the PF later with the ethtool
7322                  * channels command
7323                  */
7324                 if (vmdq_vecs < vmdq_vecs_wanted)
7325                         pf->num_vmdq_qps = 1;
7326                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7327
7328                 v_budget += vmdq_vecs;
7329                 vectors_left -= vmdq_vecs;
7330         }
7331
7332         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7333                                    GFP_KERNEL);
7334         if (!pf->msix_entries)
7335                 return -ENOMEM;
7336
7337         for (i = 0; i < v_budget; i++)
7338                 pf->msix_entries[i].entry = i;
7339         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7340
7341         if (v_actual != v_budget) {
7342                 /* If we have limited resources, we will start with no vectors
7343                  * for the special features and then allocate vectors to some
7344                  * of these features based on the policy and at the end disable
7345                  * the features that did not get any vectors.
7346                  */
7347 #ifdef I40E_FCOE
7348                 pf->num_fcoe_qps = 0;
7349                 pf->num_fcoe_msix = 0;
7350 #endif
7351                 pf->num_vmdq_msix = 0;
7352         }
7353
7354         if (v_actual < I40E_MIN_MSIX) {
7355                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7356                 kfree(pf->msix_entries);
7357                 pf->msix_entries = NULL;
7358                 return -ENODEV;
7359
7360         } else if (v_actual == I40E_MIN_MSIX) {
7361                 /* Adjust for minimal MSIX use */
7362                 pf->num_vmdq_vsis = 0;
7363                 pf->num_vmdq_qps = 0;
7364                 pf->num_lan_qps = 1;
7365                 pf->num_lan_msix = 1;
7366
7367         } else if (v_actual != v_budget) {
7368                 int vec;
7369
7370                 /* reserve the misc vector */
7371                 vec = v_actual - 1;
7372
7373                 /* Scale vector usage down */
7374                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7375                 pf->num_vmdq_vsis = 1;
7376                 pf->num_vmdq_qps = 1;
7377                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7378
7379                 /* partition out the remaining vectors */
7380                 switch (vec) {
7381                 case 2:
7382                         pf->num_lan_msix = 1;
7383                         break;
7384                 case 3:
7385 #ifdef I40E_FCOE
7386                         /* give one vector to FCoE */
7387                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7388                                 pf->num_lan_msix = 1;
7389                                 pf->num_fcoe_msix = 1;
7390                         }
7391 #else
7392                         pf->num_lan_msix = 2;
7393 #endif
7394                         break;
7395                 default:
7396 #ifdef I40E_FCOE
7397                         /* give one vector to FCoE */
7398                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7399                                 pf->num_fcoe_msix = 1;
7400                                 vec--;
7401                         }
7402 #endif
7403                         /* give the rest to the PF */
7404                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7405                         break;
7406                 }
7407         }
7408
7409         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7410             (pf->num_vmdq_msix == 0)) {
7411                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7412                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7413         }
7414 #ifdef I40E_FCOE
7415
7416         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7417                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7418                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7419         }
7420 #endif
7421         return v_actual;
7422 }
7423
7424 /**
7425  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7426  * @vsi: the VSI being configured
7427  * @v_idx: index of the vector in the vsi struct
7428  *
7429  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7430  **/
7431 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7432 {
7433         struct i40e_q_vector *q_vector;
7434
7435         /* allocate q_vector */
7436         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7437         if (!q_vector)
7438                 return -ENOMEM;
7439
7440         q_vector->vsi = vsi;
7441         q_vector->v_idx = v_idx;
7442         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7443         if (vsi->netdev)
7444                 netif_napi_add(vsi->netdev, &q_vector->napi,
7445                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7446
7447         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7448         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7449
7450         /* tie q_vector and vsi together */
7451         vsi->q_vectors[v_idx] = q_vector;
7452
7453         return 0;
7454 }
7455
7456 /**
7457  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7458  * @vsi: the VSI being configured
7459  *
7460  * We allocate one q_vector per queue interrupt.  If allocation fails we
7461  * return -ENOMEM.
7462  **/
7463 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7464 {
7465         struct i40e_pf *pf = vsi->back;
7466         int v_idx, num_q_vectors;
7467         int err;
7468
7469         /* if not MSIX, give the one vector only to the LAN VSI */
7470         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7471                 num_q_vectors = vsi->num_q_vectors;
7472         else if (vsi == pf->vsi[pf->lan_vsi])
7473                 num_q_vectors = 1;
7474         else
7475                 return -EINVAL;
7476
7477         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7478                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7479                 if (err)
7480                         goto err_out;
7481         }
7482
7483         return 0;
7484
7485 err_out:
7486         while (v_idx--)
7487                 i40e_free_q_vector(vsi, v_idx);
7488
7489         return err;
7490 }
7491
7492 /**
7493  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7494  * @pf: board private structure to initialize
7495  **/
7496 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7497 {
7498         int vectors = 0;
7499         ssize_t size;
7500
7501         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7502                 vectors = i40e_init_msix(pf);
7503                 if (vectors < 0) {
7504                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7505 #ifdef I40E_FCOE
7506                                        I40E_FLAG_FCOE_ENABLED   |
7507 #endif
7508                                        I40E_FLAG_RSS_ENABLED    |
7509                                        I40E_FLAG_DCB_CAPABLE    |
7510                                        I40E_FLAG_SRIOV_ENABLED  |
7511                                        I40E_FLAG_FD_SB_ENABLED  |
7512                                        I40E_FLAG_FD_ATR_ENABLED |
7513                                        I40E_FLAG_VMDQ_ENABLED);
7514
7515                         /* rework the queue expectations without MSIX */
7516                         i40e_determine_queue_usage(pf);
7517                 }
7518         }
7519
7520         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7521             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7522                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7523                 vectors = pci_enable_msi(pf->pdev);
7524                 if (vectors < 0) {
7525                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7526                                  vectors);
7527                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7528                 }
7529                 vectors = 1;  /* one MSI or Legacy vector */
7530         }
7531
7532         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7533                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7534
7535         /* set up vector assignment tracking */
7536         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7537         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7538         if (!pf->irq_pile) {
7539                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7540                 return -ENOMEM;
7541         }
7542         pf->irq_pile->num_entries = vectors;
7543         pf->irq_pile->search_hint = 0;
7544
7545         /* track first vector for misc interrupts, ignore return */
7546         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7547
7548         return 0;
7549 }
7550
7551 /**
7552  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7553  * @pf: board private structure
7554  *
7555  * This sets up the handler for MSIX 0, which is used to manage the
7556  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7557  * when in MSI or Legacy interrupt mode.
7558  **/
7559 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7560 {
7561         struct i40e_hw *hw = &pf->hw;
7562         int err = 0;
7563
7564         /* Only request the irq if this is the first time through, and
7565          * not when we're rebuilding after a Reset
7566          */
7567         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7568                 err = request_irq(pf->msix_entries[0].vector,
7569                                   i40e_intr, 0, pf->int_name, pf);
7570                 if (err) {
7571                         dev_info(&pf->pdev->dev,
7572                                  "request_irq for %s failed: %d\n",
7573                                  pf->int_name, err);
7574                         return -EFAULT;
7575                 }
7576         }
7577
7578         i40e_enable_misc_int_causes(pf);
7579
7580         /* associate no queues to the misc vector */
7581         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7582         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7583
7584         i40e_flush(hw);
7585
7586         i40e_irq_dynamic_enable_icr0(pf);
7587
7588         return err;
7589 }
7590
7591 /**
7592  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7593  * @vsi: vsi structure
7594  * @seed: RSS hash seed
7595  **/
7596 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7597 {
7598         struct i40e_aqc_get_set_rss_key_data rss_key;
7599         struct i40e_pf *pf = vsi->back;
7600         struct i40e_hw *hw = &pf->hw;
7601         bool pf_lut = false;
7602         u8 *rss_lut;
7603         int ret, i;
7604
7605         memset(&rss_key, 0, sizeof(rss_key));
7606         memcpy(&rss_key, seed, sizeof(rss_key));
7607
7608         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7609         if (!rss_lut)
7610                 return -ENOMEM;
7611
7612         /* Populate the LUT with max no. of queues in round robin fashion */
7613         for (i = 0; i < vsi->rss_table_size; i++)
7614                 rss_lut[i] = i % vsi->rss_size;
7615
7616         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7617         if (ret) {
7618                 dev_info(&pf->pdev->dev,
7619                          "Cannot set RSS key, err %s aq_err %s\n",
7620                          i40e_stat_str(&pf->hw, ret),
7621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7622                 goto config_rss_aq_out;
7623         }
7624
7625         if (vsi->type == I40E_VSI_MAIN)
7626                 pf_lut = true;
7627
7628         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7629                                   vsi->rss_table_size);
7630         if (ret)
7631                 dev_info(&pf->pdev->dev,
7632                          "Cannot set RSS lut, err %s aq_err %s\n",
7633                          i40e_stat_str(&pf->hw, ret),
7634                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7635
7636 config_rss_aq_out:
7637         kfree(rss_lut);
7638         return ret;
7639 }
7640
7641 /**
7642  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7643  * @vsi: VSI structure
7644  **/
7645 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7646 {
7647         u8 seed[I40E_HKEY_ARRAY_SIZE];
7648         struct i40e_pf *pf = vsi->back;
7649
7650         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7651         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7652
7653         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7654                 return i40e_config_rss_aq(vsi, seed);
7655
7656         return 0;
7657 }
7658
7659 /**
7660  * i40e_config_rss_reg - Prepare for RSS if used
7661  * @pf: board private structure
7662  * @seed: RSS hash seed
7663  **/
7664 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7665 {
7666         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7667         struct i40e_hw *hw = &pf->hw;
7668         u32 *seed_dw = (u32 *)seed;
7669         u32 current_queue = 0;
7670         u32 lut = 0;
7671         int i, j;
7672
7673         /* Fill out hash function seed */
7674         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7675                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7676
7677         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7678                 lut = 0;
7679                 for (j = 0; j < 4; j++) {
7680                         if (current_queue == vsi->rss_size)
7681                                 current_queue = 0;
7682                         lut |= ((current_queue) << (8 * j));
7683                         current_queue++;
7684                 }
7685                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7686         }
7687         i40e_flush(hw);
7688
7689         return 0;
7690 }
7691
7692 /**
7693  * i40e_config_rss - Prepare for RSS if used
7694  * @pf: board private structure
7695  **/
7696 static int i40e_config_rss(struct i40e_pf *pf)
7697 {
7698         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7699         u8 seed[I40E_HKEY_ARRAY_SIZE];
7700         struct i40e_hw *hw = &pf->hw;
7701         u32 reg_val;
7702         u64 hena;
7703
7704         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7705
7706         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7707         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7708                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7709         hena |= i40e_pf_get_default_rss_hena(pf);
7710
7711         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7712         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7713
7714         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7715
7716         /* Determine the RSS table size based on the hardware capabilities */
7717         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7718         reg_val = (pf->rss_table_size == 512) ?
7719                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7720                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7721         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7722
7723         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7724                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7725         else
7726                 return i40e_config_rss_reg(pf, seed);
7727 }
7728
7729 /**
7730  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7731  * @pf: board private structure
7732  * @queue_count: the requested queue count for rss.
7733  *
7734  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7735  * count which may be different from the requested queue count.
7736  **/
7737 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7738 {
7739         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7740         int new_rss_size;
7741
7742         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7743                 return 0;
7744
7745         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7746
7747         if (queue_count != vsi->num_queue_pairs) {
7748                 vsi->req_queue_pairs = queue_count;
7749                 i40e_prep_for_reset(pf);
7750
7751                 pf->rss_size = new_rss_size;
7752
7753                 i40e_reset_and_rebuild(pf, true);
7754                 i40e_config_rss(pf);
7755         }
7756         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7757         return pf->rss_size;
7758 }
7759
7760 /**
7761  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7762  * @pf: board private structure
7763  **/
7764 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7765 {
7766         i40e_status status;
7767         bool min_valid, max_valid;
7768         u32 max_bw, min_bw;
7769
7770         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7771                                            &min_valid, &max_valid);
7772
7773         if (!status) {
7774                 if (min_valid)
7775                         pf->npar_min_bw = min_bw;
7776                 if (max_valid)
7777                         pf->npar_max_bw = max_bw;
7778         }
7779
7780         return status;
7781 }
7782
7783 /**
7784  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7785  * @pf: board private structure
7786  **/
7787 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7788 {
7789         struct i40e_aqc_configure_partition_bw_data bw_data;
7790         i40e_status status;
7791
7792         /* Set the valid bit for this PF */
7793         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7794         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7795         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7796
7797         /* Set the new bandwidths */
7798         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7799
7800         return status;
7801 }
7802
7803 /**
7804  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7805  * @pf: board private structure
7806  **/
7807 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7808 {
7809         /* Commit temporary BW setting to permanent NVM image */
7810         enum i40e_admin_queue_err last_aq_status;
7811         i40e_status ret;
7812         u16 nvm_word;
7813
7814         if (pf->hw.partition_id != 1) {
7815                 dev_info(&pf->pdev->dev,
7816                          "Commit BW only works on partition 1! This is partition %d",
7817                          pf->hw.partition_id);
7818                 ret = I40E_NOT_SUPPORTED;
7819                 goto bw_commit_out;
7820         }
7821
7822         /* Acquire NVM for read access */
7823         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7824         last_aq_status = pf->hw.aq.asq_last_status;
7825         if (ret) {
7826                 dev_info(&pf->pdev->dev,
7827                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7828                          i40e_stat_str(&pf->hw, ret),
7829                          i40e_aq_str(&pf->hw, last_aq_status));
7830                 goto bw_commit_out;
7831         }
7832
7833         /* Read word 0x10 of NVM - SW compatibility word 1 */
7834         ret = i40e_aq_read_nvm(&pf->hw,
7835                                I40E_SR_NVM_CONTROL_WORD,
7836                                0x10, sizeof(nvm_word), &nvm_word,
7837                                false, NULL);
7838         /* Save off last admin queue command status before releasing
7839          * the NVM
7840          */
7841         last_aq_status = pf->hw.aq.asq_last_status;
7842         i40e_release_nvm(&pf->hw);
7843         if (ret) {
7844                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7845                          i40e_stat_str(&pf->hw, ret),
7846                          i40e_aq_str(&pf->hw, last_aq_status));
7847                 goto bw_commit_out;
7848         }
7849
7850         /* Wait a bit for NVM release to complete */
7851         msleep(50);
7852
7853         /* Acquire NVM for write access */
7854         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7855         last_aq_status = pf->hw.aq.asq_last_status;
7856         if (ret) {
7857                 dev_info(&pf->pdev->dev,
7858                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7859                          i40e_stat_str(&pf->hw, ret),
7860                          i40e_aq_str(&pf->hw, last_aq_status));
7861                 goto bw_commit_out;
7862         }
7863         /* Write it back out unchanged to initiate update NVM,
7864          * which will force a write of the shadow (alt) RAM to
7865          * the NVM - thus storing the bandwidth values permanently.
7866          */
7867         ret = i40e_aq_update_nvm(&pf->hw,
7868                                  I40E_SR_NVM_CONTROL_WORD,
7869                                  0x10, sizeof(nvm_word),
7870                                  &nvm_word, true, NULL);
7871         /* Save off last admin queue command status before releasing
7872          * the NVM
7873          */
7874         last_aq_status = pf->hw.aq.asq_last_status;
7875         i40e_release_nvm(&pf->hw);
7876         if (ret)
7877                 dev_info(&pf->pdev->dev,
7878                          "BW settings NOT SAVED, err %s aq_err %s\n",
7879                          i40e_stat_str(&pf->hw, ret),
7880                          i40e_aq_str(&pf->hw, last_aq_status));
7881 bw_commit_out:
7882
7883         return ret;
7884 }
7885
7886 /**
7887  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7888  * @pf: board private structure to initialize
7889  *
7890  * i40e_sw_init initializes the Adapter private data structure.
7891  * Fields are initialized based on PCI device information and
7892  * OS network device settings (MTU size).
7893  **/
7894 static int i40e_sw_init(struct i40e_pf *pf)
7895 {
7896         int err = 0;
7897         int size;
7898
7899         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7900                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7901         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7902         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7903                 if (I40E_DEBUG_USER & debug)
7904                         pf->hw.debug_mask = debug;
7905                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7906                                                 I40E_DEFAULT_MSG_ENABLE);
7907         }
7908
7909         /* Set default capability flags */
7910         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7911                     I40E_FLAG_MSI_ENABLED     |
7912                     I40E_FLAG_LINK_POLLING_ENABLED |
7913                     I40E_FLAG_MSIX_ENABLED;
7914
7915         if (iommu_present(&pci_bus_type))
7916                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7917         else
7918                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7919
7920         /* Set default ITR */
7921         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7922         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7923
7924         /* Depending on PF configurations, it is possible that the RSS
7925          * maximum might end up larger than the available queues
7926          */
7927         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7928         pf->rss_size = 1;
7929         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7930         pf->rss_size_max = min_t(int, pf->rss_size_max,
7931                                  pf->hw.func_caps.num_tx_qp);
7932         if (pf->hw.func_caps.rss) {
7933                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7934                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7935         }
7936
7937         /* MFP mode enabled */
7938         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7939                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7940                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7941                 if (i40e_get_npar_bw_setting(pf))
7942                         dev_warn(&pf->pdev->dev,
7943                                  "Could not get NPAR bw settings\n");
7944                 else
7945                         dev_info(&pf->pdev->dev,
7946                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7947                                  pf->npar_min_bw, pf->npar_max_bw);
7948         }
7949
7950         /* FW/NVM is not yet fixed in this regard */
7951         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7952             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7953                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7954                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7955                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7956                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7957                 } else {
7958                         dev_info(&pf->pdev->dev,
7959                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7960                 }
7961                 pf->fdir_pf_filter_count =
7962                                  pf->hw.func_caps.fd_filters_guaranteed;
7963                 pf->hw.fdir_shared_filter_count =
7964                                  pf->hw.func_caps.fd_filters_best_effort;
7965         }
7966
7967         if (pf->hw.func_caps.vmdq) {
7968                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7969                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7970         }
7971
7972 #ifdef I40E_FCOE
7973         i40e_init_pf_fcoe(pf);
7974
7975 #endif /* I40E_FCOE */
7976 #ifdef CONFIG_PCI_IOV
7977         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7978                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7979                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7980                 pf->num_req_vfs = min_t(int,
7981                                         pf->hw.func_caps.num_vfs,
7982                                         I40E_MAX_VF_COUNT);
7983         }
7984 #endif /* CONFIG_PCI_IOV */
7985         if (pf->hw.mac.type == I40E_MAC_X722) {
7986                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7987                              I40E_FLAG_128_QP_RSS_CAPABLE |
7988                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7989                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7990                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7991                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7992         }
7993         pf->eeprom_version = 0xDEAD;
7994         pf->lan_veb = I40E_NO_VEB;
7995         pf->lan_vsi = I40E_NO_VSI;
7996
7997         /* By default FW has this off for performance reasons */
7998         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7999
8000         /* set up queue assignment tracking */
8001         size = sizeof(struct i40e_lump_tracking)
8002                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8003         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8004         if (!pf->qp_pile) {
8005                 err = -ENOMEM;
8006                 goto sw_init_done;
8007         }
8008         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8009         pf->qp_pile->search_hint = 0;
8010
8011         pf->tx_timeout_recovery_level = 1;
8012
8013         mutex_init(&pf->switch_mutex);
8014
8015         /* If NPAR is enabled nudge the Tx scheduler */
8016         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8017                 i40e_set_npar_bw_setting(pf);
8018
8019 sw_init_done:
8020         return err;
8021 }
8022
8023 /**
8024  * i40e_set_ntuple - set the ntuple feature flag and take action
8025  * @pf: board private structure to initialize
8026  * @features: the feature set that the stack is suggesting
8027  *
8028  * returns a bool to indicate if reset needs to happen
8029  **/
8030 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8031 {
8032         bool need_reset = false;
8033
8034         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8035          * the state changed, we need to reset.
8036          */
8037         if (features & NETIF_F_NTUPLE) {
8038                 /* Enable filters and mark for reset */
8039                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8040                         need_reset = true;
8041                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8042         } else {
8043                 /* turn off filters, mark for reset and clear SW filter list */
8044                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8045                         need_reset = true;
8046                         i40e_fdir_filter_exit(pf);
8047                 }
8048                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8049                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8050                 /* reset fd counters */
8051                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8052                 pf->fdir_pf_active_filters = 0;
8053                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8054                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8055                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8056                 /* if ATR was auto disabled it can be re-enabled. */
8057                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8058                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8059                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8060         }
8061         return need_reset;
8062 }
8063
8064 /**
8065  * i40e_set_features - set the netdev feature flags
8066  * @netdev: ptr to the netdev being adjusted
8067  * @features: the feature set that the stack is suggesting
8068  **/
8069 static int i40e_set_features(struct net_device *netdev,
8070                              netdev_features_t features)
8071 {
8072         struct i40e_netdev_priv *np = netdev_priv(netdev);
8073         struct i40e_vsi *vsi = np->vsi;
8074         struct i40e_pf *pf = vsi->back;
8075         bool need_reset;
8076
8077         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8078                 i40e_vlan_stripping_enable(vsi);
8079         else
8080                 i40e_vlan_stripping_disable(vsi);
8081
8082         need_reset = i40e_set_ntuple(pf, features);
8083
8084         if (need_reset)
8085                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8086
8087         return 0;
8088 }
8089
8090 #ifdef CONFIG_I40E_VXLAN
8091 /**
8092  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8093  * @pf: board private structure
8094  * @port: The UDP port to look up
8095  *
8096  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8097  **/
8098 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8099 {
8100         u8 i;
8101
8102         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8103                 if (pf->vxlan_ports[i] == port)
8104                         return i;
8105         }
8106
8107         return i;
8108 }
8109
8110 /**
8111  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8112  * @netdev: This physical port's netdev
8113  * @sa_family: Socket Family that VXLAN is notifying us about
8114  * @port: New UDP port number that VXLAN started listening to
8115  **/
8116 static void i40e_add_vxlan_port(struct net_device *netdev,
8117                                 sa_family_t sa_family, __be16 port)
8118 {
8119         struct i40e_netdev_priv *np = netdev_priv(netdev);
8120         struct i40e_vsi *vsi = np->vsi;
8121         struct i40e_pf *pf = vsi->back;
8122         u8 next_idx;
8123         u8 idx;
8124
8125         if (sa_family == AF_INET6)
8126                 return;
8127
8128         idx = i40e_get_vxlan_port_idx(pf, port);
8129
8130         /* Check if port already exists */
8131         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8132                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8133                             ntohs(port));
8134                 return;
8135         }
8136
8137         /* Now check if there is space to add the new port */
8138         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8139
8140         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8141                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8142                             ntohs(port));
8143                 return;
8144         }
8145
8146         /* New port: add it and mark its index in the bitmap */
8147         pf->vxlan_ports[next_idx] = port;
8148         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8149         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8150 }
8151
8152 /**
8153  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8154  * @netdev: This physical port's netdev
8155  * @sa_family: Socket Family that VXLAN is notifying us about
8156  * @port: UDP port number that VXLAN stopped listening to
8157  **/
8158 static void i40e_del_vxlan_port(struct net_device *netdev,
8159                                 sa_family_t sa_family, __be16 port)
8160 {
8161         struct i40e_netdev_priv *np = netdev_priv(netdev);
8162         struct i40e_vsi *vsi = np->vsi;
8163         struct i40e_pf *pf = vsi->back;
8164         u8 idx;
8165
8166         if (sa_family == AF_INET6)
8167                 return;
8168
8169         idx = i40e_get_vxlan_port_idx(pf, port);
8170
8171         /* Check if port already exists */
8172         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8173                 /* if port exists, set it to 0 (mark for deletion)
8174                  * and make it pending
8175                  */
8176                 pf->vxlan_ports[idx] = 0;
8177                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8178                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8179         } else {
8180                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8181                             ntohs(port));
8182         }
8183 }
8184
8185 #endif
8186 static int i40e_get_phys_port_id(struct net_device *netdev,
8187                                  struct netdev_phys_item_id *ppid)
8188 {
8189         struct i40e_netdev_priv *np = netdev_priv(netdev);
8190         struct i40e_pf *pf = np->vsi->back;
8191         struct i40e_hw *hw = &pf->hw;
8192
8193         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8194                 return -EOPNOTSUPP;
8195
8196         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8197         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8198
8199         return 0;
8200 }
8201
8202 /**
8203  * i40e_ndo_fdb_add - add an entry to the hardware database
8204  * @ndm: the input from the stack
8205  * @tb: pointer to array of nladdr (unused)
8206  * @dev: the net device pointer
8207  * @addr: the MAC address entry being added
8208  * @flags: instructions from stack about fdb operation
8209  */
8210 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8211                             struct net_device *dev,
8212                             const unsigned char *addr, u16 vid,
8213                             u16 flags)
8214 {
8215         struct i40e_netdev_priv *np = netdev_priv(dev);
8216         struct i40e_pf *pf = np->vsi->back;
8217         int err = 0;
8218
8219         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8220                 return -EOPNOTSUPP;
8221
8222         if (vid) {
8223                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8224                 return -EINVAL;
8225         }
8226
8227         /* Hardware does not support aging addresses so if a
8228          * ndm_state is given only allow permanent addresses
8229          */
8230         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8231                 netdev_info(dev, "FDB only supports static addresses\n");
8232                 return -EINVAL;
8233         }
8234
8235         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8236                 err = dev_uc_add_excl(dev, addr);
8237         else if (is_multicast_ether_addr(addr))
8238                 err = dev_mc_add_excl(dev, addr);
8239         else
8240                 err = -EINVAL;
8241
8242         /* Only return duplicate errors if NLM_F_EXCL is set */
8243         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8244                 err = 0;
8245
8246         return err;
8247 }
8248
8249 /**
8250  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8251  * @dev: the netdev being configured
8252  * @nlh: RTNL message
8253  *
8254  * Inserts a new hardware bridge if not already created and
8255  * enables the bridging mode requested (VEB or VEPA). If the
8256  * hardware bridge has already been inserted and the request
8257  * is to change the mode then that requires a PF reset to
8258  * allow rebuild of the components with required hardware
8259  * bridge mode enabled.
8260  **/
8261 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8262                                    struct nlmsghdr *nlh,
8263                                    u16 flags)
8264 {
8265         struct i40e_netdev_priv *np = netdev_priv(dev);
8266         struct i40e_vsi *vsi = np->vsi;
8267         struct i40e_pf *pf = vsi->back;
8268         struct i40e_veb *veb = NULL;
8269         struct nlattr *attr, *br_spec;
8270         int i, rem;
8271
8272         /* Only for PF VSI for now */
8273         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8274                 return -EOPNOTSUPP;
8275
8276         /* Find the HW bridge for PF VSI */
8277         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8278                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8279                         veb = pf->veb[i];
8280         }
8281
8282         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8283
8284         nla_for_each_nested(attr, br_spec, rem) {
8285                 __u16 mode;
8286
8287                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8288                         continue;
8289
8290                 mode = nla_get_u16(attr);
8291                 if ((mode != BRIDGE_MODE_VEPA) &&
8292                     (mode != BRIDGE_MODE_VEB))
8293                         return -EINVAL;
8294
8295                 /* Insert a new HW bridge */
8296                 if (!veb) {
8297                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8298                                              vsi->tc_config.enabled_tc);
8299                         if (veb) {
8300                                 veb->bridge_mode = mode;
8301                                 i40e_config_bridge_mode(veb);
8302                         } else {
8303                                 /* No Bridge HW offload available */
8304                                 return -ENOENT;
8305                         }
8306                         break;
8307                 } else if (mode != veb->bridge_mode) {
8308                         /* Existing HW bridge but different mode needs reset */
8309                         veb->bridge_mode = mode;
8310                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8311                         if (mode == BRIDGE_MODE_VEB)
8312                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8313                         else
8314                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8315                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8316                         break;
8317                 }
8318         }
8319
8320         return 0;
8321 }
8322
8323 /**
8324  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8325  * @skb: skb buff
8326  * @pid: process id
8327  * @seq: RTNL message seq #
8328  * @dev: the netdev being configured
8329  * @filter_mask: unused
8330  *
8331  * Return the mode in which the hardware bridge is operating in
8332  * i.e VEB or VEPA.
8333  **/
8334 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8335                                    struct net_device *dev,
8336                                    u32 filter_mask, int nlflags)
8337 {
8338         struct i40e_netdev_priv *np = netdev_priv(dev);
8339         struct i40e_vsi *vsi = np->vsi;
8340         struct i40e_pf *pf = vsi->back;
8341         struct i40e_veb *veb = NULL;
8342         int i;
8343
8344         /* Only for PF VSI for now */
8345         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8346                 return -EOPNOTSUPP;
8347
8348         /* Find the HW bridge for the PF VSI */
8349         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8350                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8351                         veb = pf->veb[i];
8352         }
8353
8354         if (!veb)
8355                 return 0;
8356
8357         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8358                                        nlflags, 0, 0, filter_mask, NULL);
8359 }
8360
8361 #define I40E_MAX_TUNNEL_HDR_LEN 80
8362 /**
8363  * i40e_features_check - Validate encapsulated packet conforms to limits
8364  * @skb: skb buff
8365  * @netdev: This physical port's netdev
8366  * @features: Offload features that the stack believes apply
8367  **/
8368 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8369                                              struct net_device *dev,
8370                                              netdev_features_t features)
8371 {
8372         if (skb->encapsulation &&
8373             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8374              I40E_MAX_TUNNEL_HDR_LEN))
8375                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8376
8377         return features;
8378 }
8379
8380 static const struct net_device_ops i40e_netdev_ops = {
8381         .ndo_open               = i40e_open,
8382         .ndo_stop               = i40e_close,
8383         .ndo_start_xmit         = i40e_lan_xmit_frame,
8384         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8385         .ndo_set_rx_mode        = i40e_set_rx_mode,
8386         .ndo_validate_addr      = eth_validate_addr,
8387         .ndo_set_mac_address    = i40e_set_mac,
8388         .ndo_change_mtu         = i40e_change_mtu,
8389         .ndo_do_ioctl           = i40e_ioctl,
8390         .ndo_tx_timeout         = i40e_tx_timeout,
8391         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8392         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8393 #ifdef CONFIG_NET_POLL_CONTROLLER
8394         .ndo_poll_controller    = i40e_netpoll,
8395 #endif
8396         .ndo_setup_tc           = i40e_setup_tc,
8397 #ifdef I40E_FCOE
8398         .ndo_fcoe_enable        = i40e_fcoe_enable,
8399         .ndo_fcoe_disable       = i40e_fcoe_disable,
8400 #endif
8401         .ndo_set_features       = i40e_set_features,
8402         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8403         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8404         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8405         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8406         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8407         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8408 #ifdef CONFIG_I40E_VXLAN
8409         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8410         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8411 #endif
8412         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8413         .ndo_fdb_add            = i40e_ndo_fdb_add,
8414         .ndo_features_check     = i40e_features_check,
8415         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8416         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8417 };
8418
8419 /**
8420  * i40e_config_netdev - Setup the netdev flags
8421  * @vsi: the VSI being configured
8422  *
8423  * Returns 0 on success, negative value on failure
8424  **/
8425 static int i40e_config_netdev(struct i40e_vsi *vsi)
8426 {
8427         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8428         struct i40e_pf *pf = vsi->back;
8429         struct i40e_hw *hw = &pf->hw;
8430         struct i40e_netdev_priv *np;
8431         struct net_device *netdev;
8432         u8 mac_addr[ETH_ALEN];
8433         int etherdev_size;
8434
8435         etherdev_size = sizeof(struct i40e_netdev_priv);
8436         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8437         if (!netdev)
8438                 return -ENOMEM;
8439
8440         vsi->netdev = netdev;
8441         np = netdev_priv(netdev);
8442         np->vsi = vsi;
8443
8444         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8445                                   NETIF_F_GSO_UDP_TUNNEL |
8446                                   NETIF_F_TSO;
8447
8448         netdev->features = NETIF_F_SG                  |
8449                            NETIF_F_IP_CSUM             |
8450                            NETIF_F_SCTP_CSUM           |
8451                            NETIF_F_HIGHDMA             |
8452                            NETIF_F_GSO_UDP_TUNNEL      |
8453                            NETIF_F_HW_VLAN_CTAG_TX     |
8454                            NETIF_F_HW_VLAN_CTAG_RX     |
8455                            NETIF_F_HW_VLAN_CTAG_FILTER |
8456                            NETIF_F_IPV6_CSUM           |
8457                            NETIF_F_TSO                 |
8458                            NETIF_F_TSO_ECN             |
8459                            NETIF_F_TSO6                |
8460                            NETIF_F_RXCSUM              |
8461                            NETIF_F_RXHASH              |
8462                            0;
8463
8464         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8465                 netdev->features |= NETIF_F_NTUPLE;
8466
8467         /* copy netdev features into list of user selectable features */
8468         netdev->hw_features |= netdev->features;
8469
8470         if (vsi->type == I40E_VSI_MAIN) {
8471                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8472                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8473                 /* The following steps are necessary to prevent reception
8474                  * of tagged packets - some older NVM configurations load a
8475                  * default a MAC-VLAN filter that accepts any tagged packet
8476                  * which must be replaced by a normal filter.
8477                  */
8478                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8479                         i40e_add_filter(vsi, mac_addr,
8480                                         I40E_VLAN_ANY, false, true);
8481         } else {
8482                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8483                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8484                          pf->vsi[pf->lan_vsi]->netdev->name);
8485                 random_ether_addr(mac_addr);
8486                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8487         }
8488         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8489
8490         ether_addr_copy(netdev->dev_addr, mac_addr);
8491         ether_addr_copy(netdev->perm_addr, mac_addr);
8492         /* vlan gets same features (except vlan offload)
8493          * after any tweaks for specific VSI types
8494          */
8495         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8496                                                      NETIF_F_HW_VLAN_CTAG_RX |
8497                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8498         netdev->priv_flags |= IFF_UNICAST_FLT;
8499         netdev->priv_flags |= IFF_SUPP_NOFCS;
8500         /* Setup netdev TC information */
8501         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8502
8503         netdev->netdev_ops = &i40e_netdev_ops;
8504         netdev->watchdog_timeo = 5 * HZ;
8505         i40e_set_ethtool_ops(netdev);
8506 #ifdef I40E_FCOE
8507         i40e_fcoe_config_netdev(netdev, vsi);
8508 #endif
8509
8510         return 0;
8511 }
8512
8513 /**
8514  * i40e_vsi_delete - Delete a VSI from the switch
8515  * @vsi: the VSI being removed
8516  *
8517  * Returns 0 on success, negative value on failure
8518  **/
8519 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8520 {
8521         /* remove default VSI is not allowed */
8522         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8523                 return;
8524
8525         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8526 }
8527
8528 /**
8529  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8530  * @vsi: the VSI being queried
8531  *
8532  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8533  **/
8534 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8535 {
8536         struct i40e_veb *veb;
8537         struct i40e_pf *pf = vsi->back;
8538
8539         /* Uplink is not a bridge so default to VEB */
8540         if (vsi->veb_idx == I40E_NO_VEB)
8541                 return 1;
8542
8543         veb = pf->veb[vsi->veb_idx];
8544         /* Uplink is a bridge in VEPA mode */
8545         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8546                 return 0;
8547
8548         /* Uplink is a bridge in VEB mode */
8549         return 1;
8550 }
8551
8552 /**
8553  * i40e_add_vsi - Add a VSI to the switch
8554  * @vsi: the VSI being configured
8555  *
8556  * This initializes a VSI context depending on the VSI type to be added and
8557  * passes it down to the add_vsi aq command.
8558  **/
8559 static int i40e_add_vsi(struct i40e_vsi *vsi)
8560 {
8561         int ret = -ENODEV;
8562         struct i40e_mac_filter *f, *ftmp;
8563         struct i40e_pf *pf = vsi->back;
8564         struct i40e_hw *hw = &pf->hw;
8565         struct i40e_vsi_context ctxt;
8566         u8 enabled_tc = 0x1; /* TC0 enabled */
8567         int f_count = 0;
8568
8569         memset(&ctxt, 0, sizeof(ctxt));
8570         switch (vsi->type) {
8571         case I40E_VSI_MAIN:
8572                 /* The PF's main VSI is already setup as part of the
8573                  * device initialization, so we'll not bother with
8574                  * the add_vsi call, but we will retrieve the current
8575                  * VSI context.
8576                  */
8577                 ctxt.seid = pf->main_vsi_seid;
8578                 ctxt.pf_num = pf->hw.pf_id;
8579                 ctxt.vf_num = 0;
8580                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8581                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8582                 if (ret) {
8583                         dev_info(&pf->pdev->dev,
8584                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8585                                  i40e_stat_str(&pf->hw, ret),
8586                                  i40e_aq_str(&pf->hw,
8587                                              pf->hw.aq.asq_last_status));
8588                         return -ENOENT;
8589                 }
8590                 vsi->info = ctxt.info;
8591                 vsi->info.valid_sections = 0;
8592
8593                 vsi->seid = ctxt.seid;
8594                 vsi->id = ctxt.vsi_number;
8595
8596                 enabled_tc = i40e_pf_get_tc_map(pf);
8597
8598                 /* MFP mode setup queue map and update VSI */
8599                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8600                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8601                         memset(&ctxt, 0, sizeof(ctxt));
8602                         ctxt.seid = pf->main_vsi_seid;
8603                         ctxt.pf_num = pf->hw.pf_id;
8604                         ctxt.vf_num = 0;
8605                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8606                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8607                         if (ret) {
8608                                 dev_info(&pf->pdev->dev,
8609                                          "update vsi failed, err %s aq_err %s\n",
8610                                          i40e_stat_str(&pf->hw, ret),
8611                                          i40e_aq_str(&pf->hw,
8612                                                     pf->hw.aq.asq_last_status));
8613                                 ret = -ENOENT;
8614                                 goto err;
8615                         }
8616                         /* update the local VSI info queue map */
8617                         i40e_vsi_update_queue_map(vsi, &ctxt);
8618                         vsi->info.valid_sections = 0;
8619                 } else {
8620                         /* Default/Main VSI is only enabled for TC0
8621                          * reconfigure it to enable all TCs that are
8622                          * available on the port in SFP mode.
8623                          * For MFP case the iSCSI PF would use this
8624                          * flow to enable LAN+iSCSI TC.
8625                          */
8626                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8627                         if (ret) {
8628                                 dev_info(&pf->pdev->dev,
8629                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8630                                          enabled_tc,
8631                                          i40e_stat_str(&pf->hw, ret),
8632                                          i40e_aq_str(&pf->hw,
8633                                                     pf->hw.aq.asq_last_status));
8634                                 ret = -ENOENT;
8635                         }
8636                 }
8637                 break;
8638
8639         case I40E_VSI_FDIR:
8640                 ctxt.pf_num = hw->pf_id;
8641                 ctxt.vf_num = 0;
8642                 ctxt.uplink_seid = vsi->uplink_seid;
8643                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8644                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8645                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8646                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8647                         ctxt.info.valid_sections |=
8648                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8649                         ctxt.info.switch_id =
8650                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8651                 }
8652                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8653                 break;
8654
8655         case I40E_VSI_VMDQ2:
8656                 ctxt.pf_num = hw->pf_id;
8657                 ctxt.vf_num = 0;
8658                 ctxt.uplink_seid = vsi->uplink_seid;
8659                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8660                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8661
8662                 /* This VSI is connected to VEB so the switch_id
8663                  * should be set to zero by default.
8664                  */
8665                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8666                         ctxt.info.valid_sections |=
8667                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8668                         ctxt.info.switch_id =
8669                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8670                 }
8671
8672                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8673                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8674                 break;
8675
8676         case I40E_VSI_SRIOV:
8677                 ctxt.pf_num = hw->pf_id;
8678                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8679                 ctxt.uplink_seid = vsi->uplink_seid;
8680                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8681                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8682
8683                 /* This VSI is connected to VEB so the switch_id
8684                  * should be set to zero by default.
8685                  */
8686                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8687                         ctxt.info.valid_sections |=
8688                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8689                         ctxt.info.switch_id =
8690                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8691                 }
8692
8693                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8694                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8695                 if (pf->vf[vsi->vf_id].spoofchk) {
8696                         ctxt.info.valid_sections |=
8697                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8698                         ctxt.info.sec_flags |=
8699                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8700                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8701                 }
8702                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8703                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8704                 break;
8705
8706 #ifdef I40E_FCOE
8707         case I40E_VSI_FCOE:
8708                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8709                 if (ret) {
8710                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8711                         return ret;
8712                 }
8713                 break;
8714
8715 #endif /* I40E_FCOE */
8716         default:
8717                 return -ENODEV;
8718         }
8719
8720         if (vsi->type != I40E_VSI_MAIN) {
8721                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8722                 if (ret) {
8723                         dev_info(&vsi->back->pdev->dev,
8724                                  "add vsi failed, err %s aq_err %s\n",
8725                                  i40e_stat_str(&pf->hw, ret),
8726                                  i40e_aq_str(&pf->hw,
8727                                              pf->hw.aq.asq_last_status));
8728                         ret = -ENOENT;
8729                         goto err;
8730                 }
8731                 vsi->info = ctxt.info;
8732                 vsi->info.valid_sections = 0;
8733                 vsi->seid = ctxt.seid;
8734                 vsi->id = ctxt.vsi_number;
8735         }
8736
8737         /* If macvlan filters already exist, force them to get loaded */
8738         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8739                 f->changed = true;
8740                 f_count++;
8741
8742                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8743                         struct i40e_aqc_remove_macvlan_element_data element;
8744
8745                         memset(&element, 0, sizeof(element));
8746                         ether_addr_copy(element.mac_addr, f->macaddr);
8747                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8748                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8749                                                      &element, 1, NULL);
8750                         if (ret) {
8751                                 /* some older FW has a different default */
8752                                 element.flags |=
8753                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8754                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8755                                                        &element, 1, NULL);
8756                         }
8757
8758                         i40e_aq_mac_address_write(hw,
8759                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8760                                                   f->macaddr, NULL);
8761                 }
8762         }
8763         if (f_count) {
8764                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8765                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8766         }
8767
8768         /* Update VSI BW information */
8769         ret = i40e_vsi_get_bw_info(vsi);
8770         if (ret) {
8771                 dev_info(&pf->pdev->dev,
8772                          "couldn't get vsi bw info, err %s aq_err %s\n",
8773                          i40e_stat_str(&pf->hw, ret),
8774                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8775                 /* VSI is already added so not tearing that up */
8776                 ret = 0;
8777         }
8778
8779 err:
8780         return ret;
8781 }
8782
8783 /**
8784  * i40e_vsi_release - Delete a VSI and free its resources
8785  * @vsi: the VSI being removed
8786  *
8787  * Returns 0 on success or < 0 on error
8788  **/
8789 int i40e_vsi_release(struct i40e_vsi *vsi)
8790 {
8791         struct i40e_mac_filter *f, *ftmp;
8792         struct i40e_veb *veb = NULL;
8793         struct i40e_pf *pf;
8794         u16 uplink_seid;
8795         int i, n;
8796
8797         pf = vsi->back;
8798
8799         /* release of a VEB-owner or last VSI is not allowed */
8800         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8801                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8802                          vsi->seid, vsi->uplink_seid);
8803                 return -ENODEV;
8804         }
8805         if (vsi == pf->vsi[pf->lan_vsi] &&
8806             !test_bit(__I40E_DOWN, &pf->state)) {
8807                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8808                 return -ENODEV;
8809         }
8810
8811         uplink_seid = vsi->uplink_seid;
8812         if (vsi->type != I40E_VSI_SRIOV) {
8813                 if (vsi->netdev_registered) {
8814                         vsi->netdev_registered = false;
8815                         if (vsi->netdev) {
8816                                 /* results in a call to i40e_close() */
8817                                 unregister_netdev(vsi->netdev);
8818                         }
8819                 } else {
8820                         i40e_vsi_close(vsi);
8821                 }
8822                 i40e_vsi_disable_irq(vsi);
8823         }
8824
8825         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8826                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8827                                 f->is_vf, f->is_netdev);
8828         i40e_sync_vsi_filters(vsi, false);
8829
8830         i40e_vsi_delete(vsi);
8831         i40e_vsi_free_q_vectors(vsi);
8832         if (vsi->netdev) {
8833                 free_netdev(vsi->netdev);
8834                 vsi->netdev = NULL;
8835         }
8836         i40e_vsi_clear_rings(vsi);
8837         i40e_vsi_clear(vsi);
8838
8839         /* If this was the last thing on the VEB, except for the
8840          * controlling VSI, remove the VEB, which puts the controlling
8841          * VSI onto the next level down in the switch.
8842          *
8843          * Well, okay, there's one more exception here: don't remove
8844          * the orphan VEBs yet.  We'll wait for an explicit remove request
8845          * from up the network stack.
8846          */
8847         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8848                 if (pf->vsi[i] &&
8849                     pf->vsi[i]->uplink_seid == uplink_seid &&
8850                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8851                         n++;      /* count the VSIs */
8852                 }
8853         }
8854         for (i = 0; i < I40E_MAX_VEB; i++) {
8855                 if (!pf->veb[i])
8856                         continue;
8857                 if (pf->veb[i]->uplink_seid == uplink_seid)
8858                         n++;     /* count the VEBs */
8859                 if (pf->veb[i]->seid == uplink_seid)
8860                         veb = pf->veb[i];
8861         }
8862         if (n == 0 && veb && veb->uplink_seid != 0)
8863                 i40e_veb_release(veb);
8864
8865         return 0;
8866 }
8867
8868 /**
8869  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8870  * @vsi: ptr to the VSI
8871  *
8872  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8873  * corresponding SW VSI structure and initializes num_queue_pairs for the
8874  * newly allocated VSI.
8875  *
8876  * Returns 0 on success or negative on failure
8877  **/
8878 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8879 {
8880         int ret = -ENOENT;
8881         struct i40e_pf *pf = vsi->back;
8882
8883         if (vsi->q_vectors[0]) {
8884                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8885                          vsi->seid);
8886                 return -EEXIST;
8887         }
8888
8889         if (vsi->base_vector) {
8890                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8891                          vsi->seid, vsi->base_vector);
8892                 return -EEXIST;
8893         }
8894
8895         ret = i40e_vsi_alloc_q_vectors(vsi);
8896         if (ret) {
8897                 dev_info(&pf->pdev->dev,
8898                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8899                          vsi->num_q_vectors, vsi->seid, ret);
8900                 vsi->num_q_vectors = 0;
8901                 goto vector_setup_out;
8902         }
8903
8904         /* In Legacy mode, we do not have to get any other vector since we
8905          * piggyback on the misc/ICR0 for queue interrupts.
8906         */
8907         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8908                 return ret;
8909         if (vsi->num_q_vectors)
8910                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8911                                                  vsi->num_q_vectors, vsi->idx);
8912         if (vsi->base_vector < 0) {
8913                 dev_info(&pf->pdev->dev,
8914                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8915                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8916                 i40e_vsi_free_q_vectors(vsi);
8917                 ret = -ENOENT;
8918                 goto vector_setup_out;
8919         }
8920
8921 vector_setup_out:
8922         return ret;
8923 }
8924
8925 /**
8926  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8927  * @vsi: pointer to the vsi.
8928  *
8929  * This re-allocates a vsi's queue resources.
8930  *
8931  * Returns pointer to the successfully allocated and configured VSI sw struct
8932  * on success, otherwise returns NULL on failure.
8933  **/
8934 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8935 {
8936         struct i40e_pf *pf = vsi->back;
8937         u8 enabled_tc;
8938         int ret;
8939
8940         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8941         i40e_vsi_clear_rings(vsi);
8942
8943         i40e_vsi_free_arrays(vsi, false);
8944         i40e_set_num_rings_in_vsi(vsi);
8945         ret = i40e_vsi_alloc_arrays(vsi, false);
8946         if (ret)
8947                 goto err_vsi;
8948
8949         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8950         if (ret < 0) {
8951                 dev_info(&pf->pdev->dev,
8952                          "failed to get tracking for %d queues for VSI %d err %d\n",
8953                          vsi->alloc_queue_pairs, vsi->seid, ret);
8954                 goto err_vsi;
8955         }
8956         vsi->base_queue = ret;
8957
8958         /* Update the FW view of the VSI. Force a reset of TC and queue
8959          * layout configurations.
8960          */
8961         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8962         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8963         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8964         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8965
8966         /* assign it some queues */
8967         ret = i40e_alloc_rings(vsi);
8968         if (ret)
8969                 goto err_rings;
8970
8971         /* map all of the rings to the q_vectors */
8972         i40e_vsi_map_rings_to_vectors(vsi);
8973         return vsi;
8974
8975 err_rings:
8976         i40e_vsi_free_q_vectors(vsi);
8977         if (vsi->netdev_registered) {
8978                 vsi->netdev_registered = false;
8979                 unregister_netdev(vsi->netdev);
8980                 free_netdev(vsi->netdev);
8981                 vsi->netdev = NULL;
8982         }
8983         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8984 err_vsi:
8985         i40e_vsi_clear(vsi);
8986         return NULL;
8987 }
8988
8989 /**
8990  * i40e_vsi_setup - Set up a VSI by a given type
8991  * @pf: board private structure
8992  * @type: VSI type
8993  * @uplink_seid: the switch element to link to
8994  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8995  *
8996  * This allocates the sw VSI structure and its queue resources, then add a VSI
8997  * to the identified VEB.
8998  *
8999  * Returns pointer to the successfully allocated and configure VSI sw struct on
9000  * success, otherwise returns NULL on failure.
9001  **/
9002 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9003                                 u16 uplink_seid, u32 param1)
9004 {
9005         struct i40e_vsi *vsi = NULL;
9006         struct i40e_veb *veb = NULL;
9007         int ret, i;
9008         int v_idx;
9009
9010         /* The requested uplink_seid must be either
9011          *     - the PF's port seid
9012          *              no VEB is needed because this is the PF
9013          *              or this is a Flow Director special case VSI
9014          *     - seid of an existing VEB
9015          *     - seid of a VSI that owns an existing VEB
9016          *     - seid of a VSI that doesn't own a VEB
9017          *              a new VEB is created and the VSI becomes the owner
9018          *     - seid of the PF VSI, which is what creates the first VEB
9019          *              this is a special case of the previous
9020          *
9021          * Find which uplink_seid we were given and create a new VEB if needed
9022          */
9023         for (i = 0; i < I40E_MAX_VEB; i++) {
9024                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9025                         veb = pf->veb[i];
9026                         break;
9027                 }
9028         }
9029
9030         if (!veb && uplink_seid != pf->mac_seid) {
9031
9032                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9033                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9034                                 vsi = pf->vsi[i];
9035                                 break;
9036                         }
9037                 }
9038                 if (!vsi) {
9039                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9040                                  uplink_seid);
9041                         return NULL;
9042                 }
9043
9044                 if (vsi->uplink_seid == pf->mac_seid)
9045                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9046                                              vsi->tc_config.enabled_tc);
9047                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9048                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9049                                              vsi->tc_config.enabled_tc);
9050                 if (veb) {
9051                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9052                                 dev_info(&vsi->back->pdev->dev,
9053                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9054                                 return NULL;
9055                         }
9056                         /* We come up by default in VEPA mode if SRIOV is not
9057                          * already enabled, in which case we can't force VEPA
9058                          * mode.
9059                          */
9060                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9061                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9062                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9063                         }
9064                         i40e_config_bridge_mode(veb);
9065                 }
9066                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9067                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9068                                 veb = pf->veb[i];
9069                 }
9070                 if (!veb) {
9071                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9072                         return NULL;
9073                 }
9074
9075                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9076                 uplink_seid = veb->seid;
9077         }
9078
9079         /* get vsi sw struct */
9080         v_idx = i40e_vsi_mem_alloc(pf, type);
9081         if (v_idx < 0)
9082                 goto err_alloc;
9083         vsi = pf->vsi[v_idx];
9084         if (!vsi)
9085                 goto err_alloc;
9086         vsi->type = type;
9087         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9088
9089         if (type == I40E_VSI_MAIN)
9090                 pf->lan_vsi = v_idx;
9091         else if (type == I40E_VSI_SRIOV)
9092                 vsi->vf_id = param1;
9093         /* assign it some queues */
9094         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9095                                 vsi->idx);
9096         if (ret < 0) {
9097                 dev_info(&pf->pdev->dev,
9098                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9099                          vsi->alloc_queue_pairs, vsi->seid, ret);
9100                 goto err_vsi;
9101         }
9102         vsi->base_queue = ret;
9103
9104         /* get a VSI from the hardware */
9105         vsi->uplink_seid = uplink_seid;
9106         ret = i40e_add_vsi(vsi);
9107         if (ret)
9108                 goto err_vsi;
9109
9110         switch (vsi->type) {
9111         /* setup the netdev if needed */
9112         case I40E_VSI_MAIN:
9113         case I40E_VSI_VMDQ2:
9114         case I40E_VSI_FCOE:
9115                 ret = i40e_config_netdev(vsi);
9116                 if (ret)
9117                         goto err_netdev;
9118                 ret = register_netdev(vsi->netdev);
9119                 if (ret)
9120                         goto err_netdev;
9121                 vsi->netdev_registered = true;
9122                 netif_carrier_off(vsi->netdev);
9123 #ifdef CONFIG_I40E_DCB
9124                 /* Setup DCB netlink interface */
9125                 i40e_dcbnl_setup(vsi);
9126 #endif /* CONFIG_I40E_DCB */
9127                 /* fall through */
9128
9129         case I40E_VSI_FDIR:
9130                 /* set up vectors and rings if needed */
9131                 ret = i40e_vsi_setup_vectors(vsi);
9132                 if (ret)
9133                         goto err_msix;
9134
9135                 ret = i40e_alloc_rings(vsi);
9136                 if (ret)
9137                         goto err_rings;
9138
9139                 /* map all of the rings to the q_vectors */
9140                 i40e_vsi_map_rings_to_vectors(vsi);
9141
9142                 i40e_vsi_reset_stats(vsi);
9143                 break;
9144
9145         default:
9146                 /* no netdev or rings for the other VSI types */
9147                 break;
9148         }
9149
9150         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9151             (vsi->type == I40E_VSI_VMDQ2)) {
9152                 ret = i40e_vsi_config_rss(vsi);
9153         }
9154         return vsi;
9155
9156 err_rings:
9157         i40e_vsi_free_q_vectors(vsi);
9158 err_msix:
9159         if (vsi->netdev_registered) {
9160                 vsi->netdev_registered = false;
9161                 unregister_netdev(vsi->netdev);
9162                 free_netdev(vsi->netdev);
9163                 vsi->netdev = NULL;
9164         }
9165 err_netdev:
9166         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9167 err_vsi:
9168         i40e_vsi_clear(vsi);
9169 err_alloc:
9170         return NULL;
9171 }
9172
9173 /**
9174  * i40e_veb_get_bw_info - Query VEB BW information
9175  * @veb: the veb to query
9176  *
9177  * Query the Tx scheduler BW configuration data for given VEB
9178  **/
9179 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9180 {
9181         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9182         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9183         struct i40e_pf *pf = veb->pf;
9184         struct i40e_hw *hw = &pf->hw;
9185         u32 tc_bw_max;
9186         int ret = 0;
9187         int i;
9188
9189         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9190                                                   &bw_data, NULL);
9191         if (ret) {
9192                 dev_info(&pf->pdev->dev,
9193                          "query veb bw config failed, err %s aq_err %s\n",
9194                          i40e_stat_str(&pf->hw, ret),
9195                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9196                 goto out;
9197         }
9198
9199         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9200                                                    &ets_data, NULL);
9201         if (ret) {
9202                 dev_info(&pf->pdev->dev,
9203                          "query veb bw ets config failed, err %s aq_err %s\n",
9204                          i40e_stat_str(&pf->hw, ret),
9205                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9206                 goto out;
9207         }
9208
9209         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9210         veb->bw_max_quanta = ets_data.tc_bw_max;
9211         veb->is_abs_credits = bw_data.absolute_credits_enable;
9212         veb->enabled_tc = ets_data.tc_valid_bits;
9213         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9214                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9215         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9216                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9217                 veb->bw_tc_limit_credits[i] =
9218                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9219                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9220         }
9221
9222 out:
9223         return ret;
9224 }
9225
9226 /**
9227  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9228  * @pf: board private structure
9229  *
9230  * On error: returns error code (negative)
9231  * On success: returns vsi index in PF (positive)
9232  **/
9233 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9234 {
9235         int ret = -ENOENT;
9236         struct i40e_veb *veb;
9237         int i;
9238
9239         /* Need to protect the allocation of switch elements at the PF level */
9240         mutex_lock(&pf->switch_mutex);
9241
9242         /* VEB list may be fragmented if VEB creation/destruction has
9243          * been happening.  We can afford to do a quick scan to look
9244          * for any free slots in the list.
9245          *
9246          * find next empty veb slot, looping back around if necessary
9247          */
9248         i = 0;
9249         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9250                 i++;
9251         if (i >= I40E_MAX_VEB) {
9252                 ret = -ENOMEM;
9253                 goto err_alloc_veb;  /* out of VEB slots! */
9254         }
9255
9256         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9257         if (!veb) {
9258                 ret = -ENOMEM;
9259                 goto err_alloc_veb;
9260         }
9261         veb->pf = pf;
9262         veb->idx = i;
9263         veb->enabled_tc = 1;
9264
9265         pf->veb[i] = veb;
9266         ret = i;
9267 err_alloc_veb:
9268         mutex_unlock(&pf->switch_mutex);
9269         return ret;
9270 }
9271
9272 /**
9273  * i40e_switch_branch_release - Delete a branch of the switch tree
9274  * @branch: where to start deleting
9275  *
9276  * This uses recursion to find the tips of the branch to be
9277  * removed, deleting until we get back to and can delete this VEB.
9278  **/
9279 static void i40e_switch_branch_release(struct i40e_veb *branch)
9280 {
9281         struct i40e_pf *pf = branch->pf;
9282         u16 branch_seid = branch->seid;
9283         u16 veb_idx = branch->idx;
9284         int i;
9285
9286         /* release any VEBs on this VEB - RECURSION */
9287         for (i = 0; i < I40E_MAX_VEB; i++) {
9288                 if (!pf->veb[i])
9289                         continue;
9290                 if (pf->veb[i]->uplink_seid == branch->seid)
9291                         i40e_switch_branch_release(pf->veb[i]);
9292         }
9293
9294         /* Release the VSIs on this VEB, but not the owner VSI.
9295          *
9296          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9297          *       the VEB itself, so don't use (*branch) after this loop.
9298          */
9299         for (i = 0; i < pf->num_alloc_vsi; i++) {
9300                 if (!pf->vsi[i])
9301                         continue;
9302                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9303                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9304                         i40e_vsi_release(pf->vsi[i]);
9305                 }
9306         }
9307
9308         /* There's one corner case where the VEB might not have been
9309          * removed, so double check it here and remove it if needed.
9310          * This case happens if the veb was created from the debugfs
9311          * commands and no VSIs were added to it.
9312          */
9313         if (pf->veb[veb_idx])
9314                 i40e_veb_release(pf->veb[veb_idx]);
9315 }
9316
9317 /**
9318  * i40e_veb_clear - remove veb struct
9319  * @veb: the veb to remove
9320  **/
9321 static void i40e_veb_clear(struct i40e_veb *veb)
9322 {
9323         if (!veb)
9324                 return;
9325
9326         if (veb->pf) {
9327                 struct i40e_pf *pf = veb->pf;
9328
9329                 mutex_lock(&pf->switch_mutex);
9330                 if (pf->veb[veb->idx] == veb)
9331                         pf->veb[veb->idx] = NULL;
9332                 mutex_unlock(&pf->switch_mutex);
9333         }
9334
9335         kfree(veb);
9336 }
9337
9338 /**
9339  * i40e_veb_release - Delete a VEB and free its resources
9340  * @veb: the VEB being removed
9341  **/
9342 void i40e_veb_release(struct i40e_veb *veb)
9343 {
9344         struct i40e_vsi *vsi = NULL;
9345         struct i40e_pf *pf;
9346         int i, n = 0;
9347
9348         pf = veb->pf;
9349
9350         /* find the remaining VSI and check for extras */
9351         for (i = 0; i < pf->num_alloc_vsi; i++) {
9352                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9353                         n++;
9354                         vsi = pf->vsi[i];
9355                 }
9356         }
9357         if (n != 1) {
9358                 dev_info(&pf->pdev->dev,
9359                          "can't remove VEB %d with %d VSIs left\n",
9360                          veb->seid, n);
9361                 return;
9362         }
9363
9364         /* move the remaining VSI to uplink veb */
9365         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9366         if (veb->uplink_seid) {
9367                 vsi->uplink_seid = veb->uplink_seid;
9368                 if (veb->uplink_seid == pf->mac_seid)
9369                         vsi->veb_idx = I40E_NO_VEB;
9370                 else
9371                         vsi->veb_idx = veb->veb_idx;
9372         } else {
9373                 /* floating VEB */
9374                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9375                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9376         }
9377
9378         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9379         i40e_veb_clear(veb);
9380 }
9381
9382 /**
9383  * i40e_add_veb - create the VEB in the switch
9384  * @veb: the VEB to be instantiated
9385  * @vsi: the controlling VSI
9386  **/
9387 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9388 {
9389         struct i40e_pf *pf = veb->pf;
9390         bool is_default = veb->pf->cur_promisc;
9391         bool is_cloud = false;
9392         int ret;
9393
9394         /* get a VEB from the hardware */
9395         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9396                               veb->enabled_tc, is_default,
9397                               is_cloud, &veb->seid, NULL);
9398         if (ret) {
9399                 dev_info(&pf->pdev->dev,
9400                          "couldn't add VEB, err %s aq_err %s\n",
9401                          i40e_stat_str(&pf->hw, ret),
9402                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9403                 return -EPERM;
9404         }
9405
9406         /* get statistics counter */
9407         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9408                                          &veb->stats_idx, NULL, NULL, NULL);
9409         if (ret) {
9410                 dev_info(&pf->pdev->dev,
9411                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9412                          i40e_stat_str(&pf->hw, ret),
9413                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9414                 return -EPERM;
9415         }
9416         ret = i40e_veb_get_bw_info(veb);
9417         if (ret) {
9418                 dev_info(&pf->pdev->dev,
9419                          "couldn't get VEB bw info, err %s aq_err %s\n",
9420                          i40e_stat_str(&pf->hw, ret),
9421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9422                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9423                 return -ENOENT;
9424         }
9425
9426         vsi->uplink_seid = veb->seid;
9427         vsi->veb_idx = veb->idx;
9428         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9429
9430         return 0;
9431 }
9432
9433 /**
9434  * i40e_veb_setup - Set up a VEB
9435  * @pf: board private structure
9436  * @flags: VEB setup flags
9437  * @uplink_seid: the switch element to link to
9438  * @vsi_seid: the initial VSI seid
9439  * @enabled_tc: Enabled TC bit-map
9440  *
9441  * This allocates the sw VEB structure and links it into the switch
9442  * It is possible and legal for this to be a duplicate of an already
9443  * existing VEB.  It is also possible for both uplink and vsi seids
9444  * to be zero, in order to create a floating VEB.
9445  *
9446  * Returns pointer to the successfully allocated VEB sw struct on
9447  * success, otherwise returns NULL on failure.
9448  **/
9449 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9450                                 u16 uplink_seid, u16 vsi_seid,
9451                                 u8 enabled_tc)
9452 {
9453         struct i40e_veb *veb, *uplink_veb = NULL;
9454         int vsi_idx, veb_idx;
9455         int ret;
9456
9457         /* if one seid is 0, the other must be 0 to create a floating relay */
9458         if ((uplink_seid == 0 || vsi_seid == 0) &&
9459             (uplink_seid + vsi_seid != 0)) {
9460                 dev_info(&pf->pdev->dev,
9461                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9462                          uplink_seid, vsi_seid);
9463                 return NULL;
9464         }
9465
9466         /* make sure there is such a vsi and uplink */
9467         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9468                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9469                         break;
9470         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9471                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9472                          vsi_seid);
9473                 return NULL;
9474         }
9475
9476         if (uplink_seid && uplink_seid != pf->mac_seid) {
9477                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9478                         if (pf->veb[veb_idx] &&
9479                             pf->veb[veb_idx]->seid == uplink_seid) {
9480                                 uplink_veb = pf->veb[veb_idx];
9481                                 break;
9482                         }
9483                 }
9484                 if (!uplink_veb) {
9485                         dev_info(&pf->pdev->dev,
9486                                  "uplink seid %d not found\n", uplink_seid);
9487                         return NULL;
9488                 }
9489         }
9490
9491         /* get veb sw struct */
9492         veb_idx = i40e_veb_mem_alloc(pf);
9493         if (veb_idx < 0)
9494                 goto err_alloc;
9495         veb = pf->veb[veb_idx];
9496         veb->flags = flags;
9497         veb->uplink_seid = uplink_seid;
9498         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9499         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9500
9501         /* create the VEB in the switch */
9502         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9503         if (ret)
9504                 goto err_veb;
9505         if (vsi_idx == pf->lan_vsi)
9506                 pf->lan_veb = veb->idx;
9507
9508         return veb;
9509
9510 err_veb:
9511         i40e_veb_clear(veb);
9512 err_alloc:
9513         return NULL;
9514 }
9515
9516 /**
9517  * i40e_setup_pf_switch_element - set PF vars based on switch type
9518  * @pf: board private structure
9519  * @ele: element we are building info from
9520  * @num_reported: total number of elements
9521  * @printconfig: should we print the contents
9522  *
9523  * helper function to assist in extracting a few useful SEID values.
9524  **/
9525 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9526                                 struct i40e_aqc_switch_config_element_resp *ele,
9527                                 u16 num_reported, bool printconfig)
9528 {
9529         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9530         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9531         u8 element_type = ele->element_type;
9532         u16 seid = le16_to_cpu(ele->seid);
9533
9534         if (printconfig)
9535                 dev_info(&pf->pdev->dev,
9536                          "type=%d seid=%d uplink=%d downlink=%d\n",
9537                          element_type, seid, uplink_seid, downlink_seid);
9538
9539         switch (element_type) {
9540         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9541                 pf->mac_seid = seid;
9542                 break;
9543         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9544                 /* Main VEB? */
9545                 if (uplink_seid != pf->mac_seid)
9546                         break;
9547                 if (pf->lan_veb == I40E_NO_VEB) {
9548                         int v;
9549
9550                         /* find existing or else empty VEB */
9551                         for (v = 0; v < I40E_MAX_VEB; v++) {
9552                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9553                                         pf->lan_veb = v;
9554                                         break;
9555                                 }
9556                         }
9557                         if (pf->lan_veb == I40E_NO_VEB) {
9558                                 v = i40e_veb_mem_alloc(pf);
9559                                 if (v < 0)
9560                                         break;
9561                                 pf->lan_veb = v;
9562                         }
9563                 }
9564
9565                 pf->veb[pf->lan_veb]->seid = seid;
9566                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9567                 pf->veb[pf->lan_veb]->pf = pf;
9568                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9569                 break;
9570         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9571                 if (num_reported != 1)
9572                         break;
9573                 /* This is immediately after a reset so we can assume this is
9574                  * the PF's VSI
9575                  */
9576                 pf->mac_seid = uplink_seid;
9577                 pf->pf_seid = downlink_seid;
9578                 pf->main_vsi_seid = seid;
9579                 if (printconfig)
9580                         dev_info(&pf->pdev->dev,
9581                                  "pf_seid=%d main_vsi_seid=%d\n",
9582                                  pf->pf_seid, pf->main_vsi_seid);
9583                 break;
9584         case I40E_SWITCH_ELEMENT_TYPE_PF:
9585         case I40E_SWITCH_ELEMENT_TYPE_VF:
9586         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9587         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9588         case I40E_SWITCH_ELEMENT_TYPE_PE:
9589         case I40E_SWITCH_ELEMENT_TYPE_PA:
9590                 /* ignore these for now */
9591                 break;
9592         default:
9593                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9594                          element_type, seid);
9595                 break;
9596         }
9597 }
9598
9599 /**
9600  * i40e_fetch_switch_configuration - Get switch config from firmware
9601  * @pf: board private structure
9602  * @printconfig: should we print the contents
9603  *
9604  * Get the current switch configuration from the device and
9605  * extract a few useful SEID values.
9606  **/
9607 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9608 {
9609         struct i40e_aqc_get_switch_config_resp *sw_config;
9610         u16 next_seid = 0;
9611         int ret = 0;
9612         u8 *aq_buf;
9613         int i;
9614
9615         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9616         if (!aq_buf)
9617                 return -ENOMEM;
9618
9619         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9620         do {
9621                 u16 num_reported, num_total;
9622
9623                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9624                                                 I40E_AQ_LARGE_BUF,
9625                                                 &next_seid, NULL);
9626                 if (ret) {
9627                         dev_info(&pf->pdev->dev,
9628                                  "get switch config failed err %s aq_err %s\n",
9629                                  i40e_stat_str(&pf->hw, ret),
9630                                  i40e_aq_str(&pf->hw,
9631                                              pf->hw.aq.asq_last_status));
9632                         kfree(aq_buf);
9633                         return -ENOENT;
9634                 }
9635
9636                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9637                 num_total = le16_to_cpu(sw_config->header.num_total);
9638
9639                 if (printconfig)
9640                         dev_info(&pf->pdev->dev,
9641                                  "header: %d reported %d total\n",
9642                                  num_reported, num_total);
9643
9644                 for (i = 0; i < num_reported; i++) {
9645                         struct i40e_aqc_switch_config_element_resp *ele =
9646                                 &sw_config->element[i];
9647
9648                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9649                                                      printconfig);
9650                 }
9651         } while (next_seid != 0);
9652
9653         kfree(aq_buf);
9654         return ret;
9655 }
9656
9657 /**
9658  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9659  * @pf: board private structure
9660  * @reinit: if the Main VSI needs to re-initialized.
9661  *
9662  * Returns 0 on success, negative value on failure
9663  **/
9664 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9665 {
9666         int ret;
9667
9668         /* find out what's out there already */
9669         ret = i40e_fetch_switch_configuration(pf, false);
9670         if (ret) {
9671                 dev_info(&pf->pdev->dev,
9672                          "couldn't fetch switch config, err %s aq_err %s\n",
9673                          i40e_stat_str(&pf->hw, ret),
9674                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9675                 return ret;
9676         }
9677         i40e_pf_reset_stats(pf);
9678
9679         /* first time setup */
9680         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9681                 struct i40e_vsi *vsi = NULL;
9682                 u16 uplink_seid;
9683
9684                 /* Set up the PF VSI associated with the PF's main VSI
9685                  * that is already in the HW switch
9686                  */
9687                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9688                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9689                 else
9690                         uplink_seid = pf->mac_seid;
9691                 if (pf->lan_vsi == I40E_NO_VSI)
9692                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9693                 else if (reinit)
9694                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9695                 if (!vsi) {
9696                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9697                         i40e_fdir_teardown(pf);
9698                         return -EAGAIN;
9699                 }
9700         } else {
9701                 /* force a reset of TC and queue layout configurations */
9702                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
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_aq_get_link_info(&pf->hw, true, NULL, NULL);
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 #ifdef I40E_FCOE
9845         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9846 #endif
9847 }
9848
9849 /**
9850  * i40e_setup_pf_filter_control - Setup PF static filter control
9851  * @pf: PF to be setup
9852  *
9853  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9854  * settings. If PE/FCoE are enabled then it will also set the per PF
9855  * based filter sizes required for them. It also enables Flow director,
9856  * ethertype and macvlan type filter settings for the pf.
9857  *
9858  * Returns 0 on success, negative on failure
9859  **/
9860 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9861 {
9862         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9863
9864         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9865
9866         /* Flow Director is enabled */
9867         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9868                 settings->enable_fdir = true;
9869
9870         /* Ethtype and MACVLAN filters enabled for PF */
9871         settings->enable_ethtype = true;
9872         settings->enable_macvlan = true;
9873
9874         if (i40e_set_filter_control(&pf->hw, settings))
9875                 return -ENOENT;
9876
9877         return 0;
9878 }
9879
9880 #define INFO_STRING_LEN 255
9881 static void i40e_print_features(struct i40e_pf *pf)
9882 {
9883         struct i40e_hw *hw = &pf->hw;
9884         char *buf, *string;
9885
9886         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9887         if (!string) {
9888                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9889                 return;
9890         }
9891
9892         buf = string;
9893
9894         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9895 #ifdef CONFIG_PCI_IOV
9896         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9897 #endif
9898         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9899                        pf->hw.func_caps.num_vsis,
9900                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9901                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9902
9903         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9904                 buf += sprintf(buf, "RSS ");
9905         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9906                 buf += sprintf(buf, "FD_ATR ");
9907         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9908                 buf += sprintf(buf, "FD_SB ");
9909                 buf += sprintf(buf, "NTUPLE ");
9910         }
9911         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9912                 buf += sprintf(buf, "DCB ");
9913         if (pf->flags & I40E_FLAG_PTP)
9914                 buf += sprintf(buf, "PTP ");
9915 #ifdef I40E_FCOE
9916         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9917                 buf += sprintf(buf, "FCOE ");
9918 #endif
9919
9920         BUG_ON(buf > (string + INFO_STRING_LEN));
9921         dev_info(&pf->pdev->dev, "%s\n", string);
9922         kfree(string);
9923 }
9924
9925 /**
9926  * i40e_probe - Device initialization routine
9927  * @pdev: PCI device information struct
9928  * @ent: entry in i40e_pci_tbl
9929  *
9930  * i40e_probe initializes a PF identified by a pci_dev structure.
9931  * The OS initialization, configuring of the PF private structure,
9932  * and a hardware reset occur.
9933  *
9934  * Returns 0 on success, negative on failure
9935  **/
9936 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9937 {
9938         struct i40e_aq_get_phy_abilities_resp abilities;
9939         struct i40e_pf *pf;
9940         struct i40e_hw *hw;
9941         static u16 pfs_found;
9942         u16 wol_nvm_bits;
9943         u16 link_status;
9944         int err = 0;
9945         u32 len;
9946         u32 i;
9947
9948         err = pci_enable_device_mem(pdev);
9949         if (err)
9950                 return err;
9951
9952         /* set up for high or low dma */
9953         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9954         if (err) {
9955                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9956                 if (err) {
9957                         dev_err(&pdev->dev,
9958                                 "DMA configuration failed: 0x%x\n", err);
9959                         goto err_dma;
9960                 }
9961         }
9962
9963         /* set up pci connections */
9964         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9965                                            IORESOURCE_MEM), i40e_driver_name);
9966         if (err) {
9967                 dev_info(&pdev->dev,
9968                          "pci_request_selected_regions failed %d\n", err);
9969                 goto err_pci_reg;
9970         }
9971
9972         pci_enable_pcie_error_reporting(pdev);
9973         pci_set_master(pdev);
9974
9975         /* Now that we have a PCI connection, we need to do the
9976          * low level device setup.  This is primarily setting up
9977          * the Admin Queue structures and then querying for the
9978          * device's current profile information.
9979          */
9980         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9981         if (!pf) {
9982                 err = -ENOMEM;
9983                 goto err_pf_alloc;
9984         }
9985         pf->next_vsi = 0;
9986         pf->pdev = pdev;
9987         set_bit(__I40E_DOWN, &pf->state);
9988
9989         hw = &pf->hw;
9990         hw->back = pf;
9991
9992         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
9993                                 I40E_MAX_CSR_SPACE);
9994
9995         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
9996         if (!hw->hw_addr) {
9997                 err = -EIO;
9998                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9999                          (unsigned int)pci_resource_start(pdev, 0),
10000                          pf->ioremap_len, err);
10001                 goto err_ioremap;
10002         }
10003         hw->vendor_id = pdev->vendor;
10004         hw->device_id = pdev->device;
10005         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10006         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10007         hw->subsystem_device_id = pdev->subsystem_device;
10008         hw->bus.device = PCI_SLOT(pdev->devfn);
10009         hw->bus.func = PCI_FUNC(pdev->devfn);
10010         pf->instance = pfs_found;
10011
10012         if (debug != -1) {
10013                 pf->msg_enable = pf->hw.debug_mask;
10014                 pf->msg_enable = debug;
10015         }
10016
10017         /* do a special CORER for clearing PXE mode once at init */
10018         if (hw->revision_id == 0 &&
10019             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10020                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10021                 i40e_flush(hw);
10022                 msleep(200);
10023                 pf->corer_count++;
10024
10025                 i40e_clear_pxe_mode(hw);
10026         }
10027
10028         /* Reset here to make sure all is clean and to define PF 'n' */
10029         i40e_clear_hw(hw);
10030         err = i40e_pf_reset(hw);
10031         if (err) {
10032                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10033                 goto err_pf_reset;
10034         }
10035         pf->pfr_count++;
10036
10037         hw->aq.num_arq_entries = I40E_AQ_LEN;
10038         hw->aq.num_asq_entries = I40E_AQ_LEN;
10039         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10040         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10041         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10042
10043         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10044                  "%s-%s:misc",
10045                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10046
10047         err = i40e_init_shared_code(hw);
10048         if (err) {
10049                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10050                          err);
10051                 goto err_pf_reset;
10052         }
10053
10054         /* set up a default setting for link flow control */
10055         pf->hw.fc.requested_mode = I40E_FC_NONE;
10056
10057         err = i40e_init_adminq(hw);
10058         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10059         if (err) {
10060                 dev_info(&pdev->dev,
10061                          "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");
10062                 goto err_pf_reset;
10063         }
10064
10065         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10066             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10067                 dev_info(&pdev->dev,
10068                          "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");
10069         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10070                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10071                 dev_info(&pdev->dev,
10072                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10073
10074         i40e_verify_eeprom(pf);
10075
10076         /* Rev 0 hardware was never productized */
10077         if (hw->revision_id < 1)
10078                 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");
10079
10080         i40e_clear_pxe_mode(hw);
10081         err = i40e_get_capabilities(pf);
10082         if (err)
10083                 goto err_adminq_setup;
10084
10085         err = i40e_sw_init(pf);
10086         if (err) {
10087                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10088                 goto err_sw_init;
10089         }
10090
10091         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10092                                 hw->func_caps.num_rx_qp,
10093                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10094         if (err) {
10095                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10096                 goto err_init_lan_hmc;
10097         }
10098
10099         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10100         if (err) {
10101                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10102                 err = -ENOENT;
10103                 goto err_configure_lan_hmc;
10104         }
10105
10106         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10107          * Ignore error return codes because if it was already disabled via
10108          * hardware settings this will fail
10109          */
10110         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10111             (pf->hw.aq.fw_maj_ver < 4)) {
10112                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10113                 i40e_aq_stop_lldp(hw, true, NULL);
10114         }
10115
10116         i40e_get_mac_addr(hw, hw->mac.addr);
10117         if (!is_valid_ether_addr(hw->mac.addr)) {
10118                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10119                 err = -EIO;
10120                 goto err_mac_addr;
10121         }
10122         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10123         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10124         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10125         if (is_valid_ether_addr(hw->mac.port_addr))
10126                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10127 #ifdef I40E_FCOE
10128         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10129         if (err)
10130                 dev_info(&pdev->dev,
10131                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10132         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10133                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10134                          hw->mac.san_addr);
10135                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10136         }
10137         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10138 #endif /* I40E_FCOE */
10139
10140         pci_set_drvdata(pdev, pf);
10141         pci_save_state(pdev);
10142 #ifdef CONFIG_I40E_DCB
10143         err = i40e_init_pf_dcb(pf);
10144         if (err) {
10145                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10146                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10147                 /* Continue without DCB enabled */
10148         }
10149 #endif /* CONFIG_I40E_DCB */
10150
10151         /* set up periodic task facility */
10152         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10153         pf->service_timer_period = HZ;
10154
10155         INIT_WORK(&pf->service_task, i40e_service_task);
10156         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10157         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10158
10159         /* NVM bit on means WoL disabled for the port */
10160         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10161         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10162                 pf->wol_en = false;
10163         else
10164                 pf->wol_en = true;
10165         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10166
10167         /* set up the main switch operations */
10168         i40e_determine_queue_usage(pf);
10169         err = i40e_init_interrupt_scheme(pf);
10170         if (err)
10171                 goto err_switch_setup;
10172
10173         /* The number of VSIs reported by the FW is the minimum guaranteed
10174          * to us; HW supports far more and we share the remaining pool with
10175          * the other PFs. We allocate space for more than the guarantee with
10176          * the understanding that we might not get them all later.
10177          */
10178         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10179                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10180         else
10181                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10182
10183         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10184         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10185         pf->vsi = kzalloc(len, GFP_KERNEL);
10186         if (!pf->vsi) {
10187                 err = -ENOMEM;
10188                 goto err_switch_setup;
10189         }
10190
10191 #ifdef CONFIG_PCI_IOV
10192         /* prep for VF support */
10193         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10194             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10195             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10196                 if (pci_num_vf(pdev))
10197                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10198         }
10199 #endif
10200         err = i40e_setup_pf_switch(pf, false);
10201         if (err) {
10202                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10203                 goto err_vsis;
10204         }
10205         /* if FDIR VSI was set up, start it now */
10206         for (i = 0; i < pf->num_alloc_vsi; i++) {
10207                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10208                         i40e_vsi_open(pf->vsi[i]);
10209                         break;
10210                 }
10211         }
10212
10213         /* driver is only interested in link up/down and module qualification
10214          * reports from firmware
10215          */
10216         err = i40e_aq_set_phy_int_mask(&pf->hw,
10217                                        I40E_AQ_EVENT_LINK_UPDOWN |
10218                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10219         if (err)
10220                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10221                          i40e_stat_str(&pf->hw, err),
10222                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10223
10224         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10225             (pf->hw.aq.fw_maj_ver < 4)) {
10226                 msleep(75);
10227                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10228                 if (err)
10229                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10230                                  i40e_stat_str(&pf->hw, err),
10231                                  i40e_aq_str(&pf->hw,
10232                                              pf->hw.aq.asq_last_status));
10233         }
10234         /* The main driver is (mostly) up and happy. We need to set this state
10235          * before setting up the misc vector or we get a race and the vector
10236          * ends up disabled forever.
10237          */
10238         clear_bit(__I40E_DOWN, &pf->state);
10239
10240         /* In case of MSIX we are going to setup the misc vector right here
10241          * to handle admin queue events etc. In case of legacy and MSI
10242          * the misc functionality and queue processing is combined in
10243          * the same vector and that gets setup at open.
10244          */
10245         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10246                 err = i40e_setup_misc_vector(pf);
10247                 if (err) {
10248                         dev_info(&pdev->dev,
10249                                  "setup of misc vector failed: %d\n", err);
10250                         goto err_vsis;
10251                 }
10252         }
10253
10254 #ifdef CONFIG_PCI_IOV
10255         /* prep for VF support */
10256         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10257             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10258             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10259                 u32 val;
10260
10261                 /* disable link interrupts for VFs */
10262                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10263                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10264                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10265                 i40e_flush(hw);
10266
10267                 if (pci_num_vf(pdev)) {
10268                         dev_info(&pdev->dev,
10269                                  "Active VFs found, allocating resources.\n");
10270                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10271                         if (err)
10272                                 dev_info(&pdev->dev,
10273                                          "Error %d allocating resources for existing VFs\n",
10274                                          err);
10275                 }
10276         }
10277 #endif /* CONFIG_PCI_IOV */
10278
10279         pfs_found++;
10280
10281         i40e_dbg_pf_init(pf);
10282
10283         /* tell the firmware that we're starting */
10284         i40e_send_version(pf);
10285
10286         /* since everything's happy, start the service_task timer */
10287         mod_timer(&pf->service_timer,
10288                   round_jiffies(jiffies + pf->service_timer_period));
10289
10290 #ifdef I40E_FCOE
10291         /* create FCoE interface */
10292         i40e_fcoe_vsi_setup(pf);
10293
10294 #endif
10295         /* Get the negotiated link width and speed from PCI config space */
10296         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10297
10298         i40e_set_pci_config_data(hw, link_status);
10299
10300         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10301                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10302                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10303                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10304                  "Unknown"),
10305                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10306                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10307                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10308                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10309                  "Unknown"));
10310
10311         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10312             hw->bus.speed < i40e_bus_speed_8000) {
10313                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10314                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10315         }
10316
10317         /* get the requested speeds from the fw */
10318         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10319         if (err)
10320                 dev_info(&pf->pdev->dev,
10321                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10322                          i40e_stat_str(&pf->hw, err),
10323                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10324         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10325
10326         /* print a string summarizing features */
10327         i40e_print_features(pf);
10328
10329         return 0;
10330
10331         /* Unwind what we've done if something failed in the setup */
10332 err_vsis:
10333         set_bit(__I40E_DOWN, &pf->state);
10334         i40e_clear_interrupt_scheme(pf);
10335         kfree(pf->vsi);
10336 err_switch_setup:
10337         i40e_reset_interrupt_capability(pf);
10338         del_timer_sync(&pf->service_timer);
10339 err_mac_addr:
10340 err_configure_lan_hmc:
10341         (void)i40e_shutdown_lan_hmc(hw);
10342 err_init_lan_hmc:
10343         kfree(pf->qp_pile);
10344 err_sw_init:
10345 err_adminq_setup:
10346         (void)i40e_shutdown_adminq(hw);
10347 err_pf_reset:
10348         iounmap(hw->hw_addr);
10349 err_ioremap:
10350         kfree(pf);
10351 err_pf_alloc:
10352         pci_disable_pcie_error_reporting(pdev);
10353         pci_release_selected_regions(pdev,
10354                                      pci_select_bars(pdev, IORESOURCE_MEM));
10355 err_pci_reg:
10356 err_dma:
10357         pci_disable_device(pdev);
10358         return err;
10359 }
10360
10361 /**
10362  * i40e_remove - Device removal routine
10363  * @pdev: PCI device information struct
10364  *
10365  * i40e_remove is called by the PCI subsystem to alert the driver
10366  * that is should release a PCI device.  This could be caused by a
10367  * Hot-Plug event, or because the driver is going to be removed from
10368  * memory.
10369  **/
10370 static void i40e_remove(struct pci_dev *pdev)
10371 {
10372         struct i40e_pf *pf = pci_get_drvdata(pdev);
10373         i40e_status ret_code;
10374         int i;
10375
10376         i40e_dbg_pf_exit(pf);
10377
10378         i40e_ptp_stop(pf);
10379
10380         /* no more scheduling of any task */
10381         set_bit(__I40E_DOWN, &pf->state);
10382         del_timer_sync(&pf->service_timer);
10383         cancel_work_sync(&pf->service_task);
10384         i40e_fdir_teardown(pf);
10385
10386         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10387                 i40e_free_vfs(pf);
10388                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10389         }
10390
10391         i40e_fdir_teardown(pf);
10392
10393         /* If there is a switch structure or any orphans, remove them.
10394          * This will leave only the PF's VSI remaining.
10395          */
10396         for (i = 0; i < I40E_MAX_VEB; i++) {
10397                 if (!pf->veb[i])
10398                         continue;
10399
10400                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10401                     pf->veb[i]->uplink_seid == 0)
10402                         i40e_switch_branch_release(pf->veb[i]);
10403         }
10404
10405         /* Now we can shutdown the PF's VSI, just before we kill
10406          * adminq and hmc.
10407          */
10408         if (pf->vsi[pf->lan_vsi])
10409                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10410
10411         /* shutdown and destroy the HMC */
10412         if (pf->hw.hmc.hmc_obj) {
10413                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10414                 if (ret_code)
10415                         dev_warn(&pdev->dev,
10416                                  "Failed to destroy the HMC resources: %d\n",
10417                                  ret_code);
10418         }
10419
10420         /* shutdown the adminq */
10421         ret_code = i40e_shutdown_adminq(&pf->hw);
10422         if (ret_code)
10423                 dev_warn(&pdev->dev,
10424                          "Failed to destroy the Admin Queue resources: %d\n",
10425                          ret_code);
10426
10427         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10428         i40e_clear_interrupt_scheme(pf);
10429         for (i = 0; i < pf->num_alloc_vsi; i++) {
10430                 if (pf->vsi[i]) {
10431                         i40e_vsi_clear_rings(pf->vsi[i]);
10432                         i40e_vsi_clear(pf->vsi[i]);
10433                         pf->vsi[i] = NULL;
10434                 }
10435         }
10436
10437         for (i = 0; i < I40E_MAX_VEB; i++) {
10438                 kfree(pf->veb[i]);
10439                 pf->veb[i] = NULL;
10440         }
10441
10442         kfree(pf->qp_pile);
10443         kfree(pf->vsi);
10444
10445         iounmap(pf->hw.hw_addr);
10446         kfree(pf);
10447         pci_release_selected_regions(pdev,
10448                                      pci_select_bars(pdev, IORESOURCE_MEM));
10449
10450         pci_disable_pcie_error_reporting(pdev);
10451         pci_disable_device(pdev);
10452 }
10453
10454 /**
10455  * i40e_pci_error_detected - warning that something funky happened in PCI land
10456  * @pdev: PCI device information struct
10457  *
10458  * Called to warn that something happened and the error handling steps
10459  * are in progress.  Allows the driver to quiesce things, be ready for
10460  * remediation.
10461  **/
10462 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10463                                                 enum pci_channel_state error)
10464 {
10465         struct i40e_pf *pf = pci_get_drvdata(pdev);
10466
10467         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10468
10469         /* shutdown all operations */
10470         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10471                 rtnl_lock();
10472                 i40e_prep_for_reset(pf);
10473                 rtnl_unlock();
10474         }
10475
10476         /* Request a slot reset */
10477         return PCI_ERS_RESULT_NEED_RESET;
10478 }
10479
10480 /**
10481  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10482  * @pdev: PCI device information struct
10483  *
10484  * Called to find if the driver can work with the device now that
10485  * the pci slot has been reset.  If a basic connection seems good
10486  * (registers are readable and have sane content) then return a
10487  * happy little PCI_ERS_RESULT_xxx.
10488  **/
10489 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10490 {
10491         struct i40e_pf *pf = pci_get_drvdata(pdev);
10492         pci_ers_result_t result;
10493         int err;
10494         u32 reg;
10495
10496         dev_dbg(&pdev->dev, "%s\n", __func__);
10497         if (pci_enable_device_mem(pdev)) {
10498                 dev_info(&pdev->dev,
10499                          "Cannot re-enable PCI device after reset.\n");
10500                 result = PCI_ERS_RESULT_DISCONNECT;
10501         } else {
10502                 pci_set_master(pdev);
10503                 pci_restore_state(pdev);
10504                 pci_save_state(pdev);
10505                 pci_wake_from_d3(pdev, false);
10506
10507                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10508                 if (reg == 0)
10509                         result = PCI_ERS_RESULT_RECOVERED;
10510                 else
10511                         result = PCI_ERS_RESULT_DISCONNECT;
10512         }
10513
10514         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10515         if (err) {
10516                 dev_info(&pdev->dev,
10517                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10518                          err);
10519                 /* non-fatal, continue */
10520         }
10521
10522         return result;
10523 }
10524
10525 /**
10526  * i40e_pci_error_resume - restart operations after PCI error recovery
10527  * @pdev: PCI device information struct
10528  *
10529  * Called to allow the driver to bring things back up after PCI error
10530  * and/or reset recovery has finished.
10531  **/
10532 static void i40e_pci_error_resume(struct pci_dev *pdev)
10533 {
10534         struct i40e_pf *pf = pci_get_drvdata(pdev);
10535
10536         dev_dbg(&pdev->dev, "%s\n", __func__);
10537         if (test_bit(__I40E_SUSPENDED, &pf->state))
10538                 return;
10539
10540         rtnl_lock();
10541         i40e_handle_reset_warning(pf);
10542         rtnl_unlock();
10543 }
10544
10545 /**
10546  * i40e_shutdown - PCI callback for shutting down
10547  * @pdev: PCI device information struct
10548  **/
10549 static void i40e_shutdown(struct pci_dev *pdev)
10550 {
10551         struct i40e_pf *pf = pci_get_drvdata(pdev);
10552         struct i40e_hw *hw = &pf->hw;
10553
10554         set_bit(__I40E_SUSPENDED, &pf->state);
10555         set_bit(__I40E_DOWN, &pf->state);
10556         rtnl_lock();
10557         i40e_prep_for_reset(pf);
10558         rtnl_unlock();
10559
10560         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10561         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10562
10563         del_timer_sync(&pf->service_timer);
10564         cancel_work_sync(&pf->service_task);
10565         i40e_fdir_teardown(pf);
10566
10567         rtnl_lock();
10568         i40e_prep_for_reset(pf);
10569         rtnl_unlock();
10570
10571         wr32(hw, I40E_PFPM_APM,
10572              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10573         wr32(hw, I40E_PFPM_WUFC,
10574              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10575
10576         i40e_clear_interrupt_scheme(pf);
10577
10578         if (system_state == SYSTEM_POWER_OFF) {
10579                 pci_wake_from_d3(pdev, pf->wol_en);
10580                 pci_set_power_state(pdev, PCI_D3hot);
10581         }
10582 }
10583
10584 #ifdef CONFIG_PM
10585 /**
10586  * i40e_suspend - PCI callback for moving to D3
10587  * @pdev: PCI device information struct
10588  **/
10589 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10590 {
10591         struct i40e_pf *pf = pci_get_drvdata(pdev);
10592         struct i40e_hw *hw = &pf->hw;
10593
10594         set_bit(__I40E_SUSPENDED, &pf->state);
10595         set_bit(__I40E_DOWN, &pf->state);
10596
10597         rtnl_lock();
10598         i40e_prep_for_reset(pf);
10599         rtnl_unlock();
10600
10601         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10602         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10603
10604         pci_wake_from_d3(pdev, pf->wol_en);
10605         pci_set_power_state(pdev, PCI_D3hot);
10606
10607         return 0;
10608 }
10609
10610 /**
10611  * i40e_resume - PCI callback for waking up from D3
10612  * @pdev: PCI device information struct
10613  **/
10614 static int i40e_resume(struct pci_dev *pdev)
10615 {
10616         struct i40e_pf *pf = pci_get_drvdata(pdev);
10617         u32 err;
10618
10619         pci_set_power_state(pdev, PCI_D0);
10620         pci_restore_state(pdev);
10621         /* pci_restore_state() clears dev->state_saves, so
10622          * call pci_save_state() again to restore it.
10623          */
10624         pci_save_state(pdev);
10625
10626         err = pci_enable_device_mem(pdev);
10627         if (err) {
10628                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10629                 return err;
10630         }
10631         pci_set_master(pdev);
10632
10633         /* no wakeup events while running */
10634         pci_wake_from_d3(pdev, false);
10635
10636         /* handling the reset will rebuild the device state */
10637         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10638                 clear_bit(__I40E_DOWN, &pf->state);
10639                 rtnl_lock();
10640                 i40e_reset_and_rebuild(pf, false);
10641                 rtnl_unlock();
10642         }
10643
10644         return 0;
10645 }
10646
10647 #endif
10648 static const struct pci_error_handlers i40e_err_handler = {
10649         .error_detected = i40e_pci_error_detected,
10650         .slot_reset = i40e_pci_error_slot_reset,
10651         .resume = i40e_pci_error_resume,
10652 };
10653
10654 static struct pci_driver i40e_driver = {
10655         .name     = i40e_driver_name,
10656         .id_table = i40e_pci_tbl,
10657         .probe    = i40e_probe,
10658         .remove   = i40e_remove,
10659 #ifdef CONFIG_PM
10660         .suspend  = i40e_suspend,
10661         .resume   = i40e_resume,
10662 #endif
10663         .shutdown = i40e_shutdown,
10664         .err_handler = &i40e_err_handler,
10665         .sriov_configure = i40e_pci_sriov_configure,
10666 };
10667
10668 /**
10669  * i40e_init_module - Driver registration routine
10670  *
10671  * i40e_init_module is the first routine called when the driver is
10672  * loaded. All it does is register with the PCI subsystem.
10673  **/
10674 static int __init i40e_init_module(void)
10675 {
10676         pr_info("%s: %s - version %s\n", i40e_driver_name,
10677                 i40e_driver_string, i40e_driver_version_str);
10678         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10679
10680         i40e_dbg_init();
10681         return pci_register_driver(&i40e_driver);
10682 }
10683 module_init(i40e_init_module);
10684
10685 /**
10686  * i40e_exit_module - Driver exit cleanup routine
10687  *
10688  * i40e_exit_module is called just before the driver is removed
10689  * from memory.
10690  **/
10691 static void __exit i40e_exit_module(void)
10692 {
10693         pci_unregister_driver(&i40e_driver);
10694         i40e_dbg_exit();
10695 }
10696 module_exit(i40e_exit_module);