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 rx_p, rx_b;
 883         u64 tx_p, tx_b;
 884         u16 q;
 885
 886         if (test_bit(__I40E_DOWN, &vsi->state) ||
 887             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 888                 return;
 889
 890         ns = i40e_get_vsi_stats_struct(vsi);
 891         ons = &vsi->net_stats_offsets;
 892         es = &vsi->eth_stats;
 893         oes = &vsi->eth_stats_offsets;
 894
 895         /* Gather up the netdev and vsi stats that the driver collects
 896          * on the fly during packet processing
 897          */
 898         rx_b = rx_p = 0;
 899         tx_b = tx_p = 0;
 900         tx_restart = tx_busy = 0;
 901         rx_page = 0;
 902         rx_buf = 0;
 903         rcu_read_lock();
 904         for (q = 0; q < vsi->num_queue_pairs; q++) {
 905                 /* locate Tx ring */
 906                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 907
 908                 do {
 909                         start = u64_stats_fetch_begin_irq(&p->syncp);
 910                         packets = p->stats.packets;
 911                         bytes = p->stats.bytes;
 912                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 913                 tx_b += bytes;
 914                 tx_p += packets;
 915                 tx_restart += p->tx_stats.restart_queue;
 916                 tx_busy += p->tx_stats.tx_busy;
 917
 918                 /* Rx queue is part of the same block as Tx queue */
 919                 p = &p[1];
 920                 do {
 921                         start = u64_stats_fetch_begin_irq(&p->syncp);
 922                         packets = p->stats.packets;
 923                         bytes = p->stats.bytes;
 924                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 925                 rx_b += bytes;
 926                 rx_p += packets;
 927                 rx_buf += p->rx_stats.alloc_buff_failed;
 928                 rx_page += p->rx_stats.alloc_page_failed;
 929         }
 930         rcu_read_unlock();
 931         vsi->tx_restart = tx_restart;
 932         vsi->tx_busy = tx_busy;
 933         vsi->rx_page_failed = rx_page;
 934         vsi->rx_buf_failed = rx_buf;
 935
 936         ns->rx_packets = rx_p;
 937         ns->rx_bytes = rx_b;
 938         ns->tx_packets = tx_p;
 939         ns->tx_bytes = tx_b;
 940
 941         /* update netdev stats from eth stats */
 942         i40e_update_eth_stats(vsi);
 943         ons->tx_errors = oes->tx_errors;
 944         ns->tx_errors = es->tx_errors;
 945         ons->multicast = oes->rx_multicast;
 946         ns->multicast = es->rx_multicast;
 947         ons->rx_dropped = oes->rx_discards;
 948         ns->rx_dropped = es->rx_discards;
 949         ons->tx_dropped = oes->tx_discards;
 950         ns->tx_dropped = es->tx_discards;
 951
 952         /* pull in a couple PF stats if this is the main vsi */
 953         if (vsi == pf->vsi[pf->lan_vsi]) {
 954                 ns->rx_crc_errors = pf->stats.crc_errors;
 955                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 956                 ns->rx_length_errors = pf->stats.rx_length_errors;
 957         }
 958 }
 959
 960 /**
 961  * i40e_update_pf_stats - Update the PF statistics counters.
 962  * @pf: the PF to be updated
 963  **/
 964 static void i40e_update_pf_stats(struct i40e_pf *pf)
 965 {
 966         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 967         struct i40e_hw_port_stats *nsd = &pf->stats;
 968         struct i40e_hw *hw = &pf->hw;
 969         u32 val;
 970         int i;
 971
 972         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 973                            I40E_GLPRT_GORCL(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 976         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 977                            I40E_GLPRT_GOTCL(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 980         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->eth.rx_discards,
 983                            &nsd->eth.rx_discards);
 984         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 985                            I40E_GLPRT_UPRCL(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->eth.rx_unicast,
 988                            &nsd->eth.rx_unicast);
 989         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 990                            I40E_GLPRT_MPRCL(hw->port),
 991                            pf->stat_offsets_loaded,
 992                            &osd->eth.rx_multicast,
 993                            &nsd->eth.rx_multicast);
 994         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 995                            I40E_GLPRT_BPRCL(hw->port),
 996                            pf->stat_offsets_loaded,
 997                            &osd->eth.rx_broadcast,
 998                            &nsd->eth.rx_broadcast);
 999         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1000                            I40E_GLPRT_UPTCL(hw->port),
1001                            pf->stat_offsets_loaded,
1002                            &osd->eth.tx_unicast,
1003                            &nsd->eth.tx_unicast);
1004         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1005                            I40E_GLPRT_MPTCL(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->eth.tx_multicast,
1008                            &nsd->eth.tx_multicast);
1009         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1010                            I40E_GLPRT_BPTCL(hw->port),
1011                            pf->stat_offsets_loaded,
1012                            &osd->eth.tx_broadcast,
1013                            &nsd->eth.tx_broadcast);
1014
1015         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->tx_dropped_link_down,
1018                            &nsd->tx_dropped_link_down);
1019
1020         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->crc_errors, &nsd->crc_errors);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->illegal_bytes, &nsd->illegal_bytes);
1027
1028         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->mac_local_faults,
1031                            &nsd->mac_local_faults);
1032         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->mac_remote_faults,
1035                            &nsd->mac_remote_faults);
1036
1037         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_length_errors,
1040                            &nsd->rx_length_errors);
1041
1042         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->link_xon_rx, &nsd->link_xon_rx);
1045         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->link_xon_tx, &nsd->link_xon_tx);
1048         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1049         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1052
1053         for (i = 0; i < 8; i++) {
1054                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1055                                    pf->stat_offsets_loaded,
1056                                    &osd->priority_xon_rx[i],
1057                                    &nsd->priority_xon_rx[i]);
1058                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1059                                    pf->stat_offsets_loaded,
1060                                    &osd->priority_xon_tx[i],
1061                                    &nsd->priority_xon_tx[i]);
1062                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1063                                    pf->stat_offsets_loaded,
1064                                    &osd->priority_xoff_tx[i],
1065                                    &nsd->priority_xoff_tx[i]);
1066                 i40e_stat_update32(hw,
1067                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1068                                    pf->stat_offsets_loaded,
1069                                    &osd->priority_xon_2_xoff[i],
1070                                    &nsd->priority_xon_2_xoff[i]);
1071         }
1072
1073         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1074                            I40E_GLPRT_PRC64L(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_size_64, &nsd->rx_size_64);
1077         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1078                            I40E_GLPRT_PRC127L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_size_127, &nsd->rx_size_127);
1081         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1082                            I40E_GLPRT_PRC255L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->rx_size_255, &nsd->rx_size_255);
1085         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1086                            I40E_GLPRT_PRC511L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_size_511, &nsd->rx_size_511);
1089         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1090                            I40E_GLPRT_PRC1023L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->rx_size_1023, &nsd->rx_size_1023);
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1094                            I40E_GLPRT_PRC1522L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_1522, &nsd->rx_size_1522);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1098                            I40E_GLPRT_PRC9522L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_big, &nsd->rx_size_big);
1101
1102         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1103                            I40E_GLPRT_PTC64L(hw->port),
1104                            pf->stat_offsets_loaded,
1105                            &osd->tx_size_64, &nsd->tx_size_64);
1106         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1107                            I40E_GLPRT_PTC127L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->tx_size_127, &nsd->tx_size_127);
1110         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1111                            I40E_GLPRT_PTC255L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_size_255, &nsd->tx_size_255);
1114         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1115                            I40E_GLPRT_PTC511L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->tx_size_511, &nsd->tx_size_511);
1118         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1119                            I40E_GLPRT_PTC1023L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->tx_size_1023, &nsd->tx_size_1023);
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1123                            I40E_GLPRT_PTC1522L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_1522, &nsd->tx_size_1522);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1127                            I40E_GLPRT_PTC9522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_big, &nsd->tx_size_big);
1130
1131         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->rx_undersize, &nsd->rx_undersize);
1134         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->rx_fragments, &nsd->rx_fragments);
1137         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->rx_oversize, &nsd->rx_oversize);
1140         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_jabber, &nsd->rx_jabber);
1143
1144         /* FDIR stats */
1145         i40e_stat_update32(hw,
1146                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1147                            pf->stat_offsets_loaded,
1148                            &osd->fd_atr_match, &nsd->fd_atr_match);
1149         i40e_stat_update32(hw,
1150                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1151                            pf->stat_offsets_loaded,
1152                            &osd->fd_sb_match, &nsd->fd_sb_match);
1153         i40e_stat_update32(hw,
1154                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1155                       pf->stat_offsets_loaded,
1156                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1157
1158         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1159         nsd->tx_lpi_status =
1160                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1161                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1162         nsd->rx_lpi_status =
1163                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1164                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1165         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1166                            pf->stat_offsets_loaded,
1167                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1168         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1169                            pf->stat_offsets_loaded,
1170                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1171
1172         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1173             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1174                 nsd->fd_sb_status = true;
1175         else
1176                 nsd->fd_sb_status = false;
1177
1178         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1179             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1180                 nsd->fd_atr_status = true;
1181         else
1182                 nsd->fd_atr_status = false;
1183
1184         pf->stat_offsets_loaded = true;
1185 }
1186
1187 /**
1188  * i40e_update_stats - Update the various statistics counters.
1189  * @vsi: the VSI to be updated
1190  *
1191  * Update the various stats for this VSI and its related entities.
1192  **/
1193 void i40e_update_stats(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_pf *pf = vsi->back;
1196
1197         if (vsi == pf->vsi[pf->lan_vsi])
1198                 i40e_update_pf_stats(pf);
1199
1200         i40e_update_vsi_stats(vsi);
1201 #ifdef I40E_FCOE
1202         i40e_update_fcoe_stats(vsi);
1203 #endif
1204 }
1205
1206 /**
1207  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1208  * @vsi: the VSI to be searched
1209  * @macaddr: the MAC address
1210  * @vlan: the vlan
1211  * @is_vf: make sure its a VF filter, else doesn't matter
1212  * @is_netdev: make sure its a netdev filter, else doesn't matter
1213  *
1214  * Returns ptr to the filter object or NULL
1215  **/
1216 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1217                                                 u8 *macaddr, s16 vlan,
1218                                                 bool is_vf, bool is_netdev)
1219 {
1220         struct i40e_mac_filter *f;
1221
1222         if (!vsi || !macaddr)
1223                 return NULL;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1227                     (vlan == f->vlan)    &&
1228                     (!is_vf || f->is_vf) &&
1229                     (!is_netdev || f->is_netdev))
1230                         return f;
1231         }
1232         return NULL;
1233 }
1234
1235 /**
1236  * i40e_find_mac - Find a mac addr in the macvlan filters list
1237  * @vsi: the VSI to be searched
1238  * @macaddr: the MAC address we are searching for
1239  * @is_vf: make sure its a VF filter, else doesn't matter
1240  * @is_netdev: make sure its a netdev filter, else doesn't matter
1241  *
1242  * Returns the first filter with the provided MAC address or NULL if
1243  * MAC address was not found
1244  **/
1245 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1246                                       bool is_vf, bool is_netdev)
1247 {
1248         struct i40e_mac_filter *f;
1249
1250         if (!vsi || !macaddr)
1251                 return NULL;
1252
1253         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1254                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1255                     (!is_vf || f->is_vf) &&
1256                     (!is_netdev || f->is_netdev))
1257                         return f;
1258         }
1259         return NULL;
1260 }
1261
1262 /**
1263  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1264  * @vsi: the VSI to be searched
1265  *
1266  * Returns true if VSI is in vlan mode or false otherwise
1267  **/
1268 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1269 {
1270         struct i40e_mac_filter *f;
1271
1272         /* Only -1 for all the filters denotes not in vlan mode
1273          * so we have to go through all the list in order to make sure
1274          */
1275         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1276                 if (f->vlan >= 0 || vsi->info.pvid)
1277                         return true;
1278         }
1279
1280         return false;
1281 }
1282
1283 /**
1284  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1285  * @vsi: the VSI to be searched
1286  * @macaddr: the mac address to be filtered
1287  * @is_vf: true if it is a VF
1288  * @is_netdev: true if it is a netdev
1289  *
1290  * Goes through all the macvlan filters and adds a
1291  * macvlan filter for each unique vlan that already exists
1292  *
1293  * Returns first filter found on success, else NULL
1294  **/
1295 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1296                                              bool is_vf, bool is_netdev)
1297 {
1298         struct i40e_mac_filter *f;
1299
1300         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1301                 if (vsi->info.pvid)
1302                         f->vlan = le16_to_cpu(vsi->info.pvid);
1303                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1304                                       is_vf, is_netdev)) {
1305                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1306                                              is_vf, is_netdev))
1307                                 return NULL;
1308                 }
1309         }
1310
1311         return list_first_entry_or_null(&vsi->mac_filter_list,
1312                                         struct i40e_mac_filter, list);
1313 }
1314
1315 /**
1316  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1317  * @vsi: the PF Main VSI - inappropriate for any other VSI
1318  * @macaddr: the MAC address
1319  *
1320  * Some older firmware configurations set up a default promiscuous VLAN
1321  * filter that needs to be removed.
1322  **/
1323 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1324 {
1325         struct i40e_aqc_remove_macvlan_element_data element;
1326         struct i40e_pf *pf = vsi->back;
1327         i40e_status ret;
1328
1329         /* Only appropriate for the PF main VSI */
1330         if (vsi->type != I40E_VSI_MAIN)
1331                 return -EINVAL;
1332
1333         memset(&element, 0, sizeof(element));
1334         ether_addr_copy(element.mac_addr, macaddr);
1335         element.vlan_tag = 0;
1336         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1337                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1338         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1339         if (ret)
1340                 return -ENOENT;
1341
1342         return 0;
1343 }
1344
1345 /**
1346  * i40e_add_filter - Add a mac/vlan filter to the VSI
1347  * @vsi: the VSI to be searched
1348  * @macaddr: the MAC address
1349  * @vlan: the vlan
1350  * @is_vf: make sure its a VF filter, else doesn't matter
1351  * @is_netdev: make sure its a netdev filter, else doesn't matter
1352  *
1353  * Returns ptr to the filter object or NULL when no memory available.
1354  **/
1355 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1356                                         u8 *macaddr, s16 vlan,
1357                                         bool is_vf, bool is_netdev)
1358 {
1359         struct i40e_mac_filter *f;
1360
1361         if (!vsi || !macaddr)
1362                 return NULL;
1363
1364         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1365         if (!f) {
1366                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1367                 if (!f)
1368                         goto add_filter_out;
1369
1370                 ether_addr_copy(f->macaddr, macaddr);
1371                 f->vlan = vlan;
1372                 f->changed = true;
1373
1374                 INIT_LIST_HEAD(&f->list);
1375                 list_add(&f->list, &vsi->mac_filter_list);
1376         }
1377
1378         /* increment counter and add a new flag if needed */
1379         if (is_vf) {
1380                 if (!f->is_vf) {
1381                         f->is_vf = true;
1382                         f->counter++;
1383                 }
1384         } else if (is_netdev) {
1385                 if (!f->is_netdev) {
1386                         f->is_netdev = true;
1387                         f->counter++;
1388                 }
1389         } else {
1390                 f->counter++;
1391         }
1392
1393         /* changed tells sync_filters_subtask to
1394          * push the filter down to the firmware
1395          */
1396         if (f->changed) {
1397                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1398                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1399         }
1400
1401 add_filter_out:
1402         return f;
1403 }
1404
1405 /**
1406  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1407  * @vsi: the VSI to be searched
1408  * @macaddr: the MAC address
1409  * @vlan: the vlan
1410  * @is_vf: make sure it's a VF filter, else doesn't matter
1411  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1412  **/
1413 void i40e_del_filter(struct i40e_vsi *vsi,
1414                      u8 *macaddr, s16 vlan,
1415                      bool is_vf, bool is_netdev)
1416 {
1417         struct i40e_mac_filter *f;
1418
1419         if (!vsi || !macaddr)
1420                 return;
1421
1422         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1423         if (!f || f->counter == 0)
1424                 return;
1425
1426         if (is_vf) {
1427                 if (f->is_vf) {
1428                         f->is_vf = false;
1429                         f->counter--;
1430                 }
1431         } else if (is_netdev) {
1432                 if (f->is_netdev) {
1433                         f->is_netdev = false;
1434                         f->counter--;
1435                 }
1436         } else {
1437                 /* make sure we don't remove a filter in use by VF or netdev */
1438                 int min_f = 0;
1439                 min_f += (f->is_vf ? 1 : 0);
1440                 min_f += (f->is_netdev ? 1 : 0);
1441
1442                 if (f->counter > min_f)
1443                         f->counter--;
1444         }
1445
1446         /* counter == 0 tells sync_filters_subtask to
1447          * remove the filter from the firmware's list
1448          */
1449         if (f->counter == 0) {
1450                 f->changed = true;
1451                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1452                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1453         }
1454 }
1455
1456 /**
1457  * i40e_set_mac - NDO callback to set mac address
1458  * @netdev: network interface device structure
1459  * @p: pointer to an address structure
1460  *
1461  * Returns 0 on success, negative on failure
1462  **/
1463 #ifdef I40E_FCOE
1464 int i40e_set_mac(struct net_device *netdev, void *p)
1465 #else
1466 static int i40e_set_mac(struct net_device *netdev, void *p)
1467 #endif
1468 {
1469         struct i40e_netdev_priv *np = netdev_priv(netdev);
1470         struct i40e_vsi *vsi = np->vsi;
1471         struct i40e_pf *pf = vsi->back;
1472         struct i40e_hw *hw = &pf->hw;
1473         struct sockaddr *addr = p;
1474         struct i40e_mac_filter *f;
1475
1476         if (!is_valid_ether_addr(addr->sa_data))
1477                 return -EADDRNOTAVAIL;
1478
1479         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1480                 netdev_info(netdev, "already using mac address %pM\n",
1481                             addr->sa_data);
1482                 return 0;
1483         }
1484
1485         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1486             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1487                 return -EADDRNOTAVAIL;
1488
1489         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1490                 netdev_info(netdev, "returning to hw mac address %pM\n",
1491                             hw->mac.addr);
1492         else
1493                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1494
1495         if (vsi->type == I40E_VSI_MAIN) {
1496                 i40e_status ret;
1497                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1498                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1499                                                 addr->sa_data, NULL);
1500                 if (ret) {
1501                         netdev_info(netdev,
1502                                     "Addr change for Main VSI failed: %d\n",
1503                                     ret);
1504                         return -EADDRNOTAVAIL;
1505                 }
1506         }
1507
1508         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1509                 struct i40e_aqc_remove_macvlan_element_data element;
1510
1511                 memset(&element, 0, sizeof(element));
1512                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1513                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1514                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1515         } else {
1516                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1517                                 false, false);
1518         }
1519
1520         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1521                 struct i40e_aqc_add_macvlan_element_data element;
1522
1523                 memset(&element, 0, sizeof(element));
1524                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1525                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1526                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1527         } else {
1528                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1529                                     false, false);
1530                 if (f)
1531                         f->is_laa = true;
1532         }
1533
1534         i40e_sync_vsi_filters(vsi, false);
1535         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1536
1537         return 0;
1538 }
1539
1540 /**
1541  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1542  * @vsi: the VSI being setup
1543  * @ctxt: VSI context structure
1544  * @enabled_tc: Enabled TCs bitmap
1545  * @is_add: True if called before Add VSI
1546  *
1547  * Setup VSI queue mapping for enabled traffic classes.
1548  **/
1549 #ifdef I40E_FCOE
1550 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1551                               struct i40e_vsi_context *ctxt,
1552                               u8 enabled_tc,
1553                               bool is_add)
1554 #else
1555 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1556                                      struct i40e_vsi_context *ctxt,
1557                                      u8 enabled_tc,
1558                                      bool is_add)
1559 #endif
1560 {
1561         struct i40e_pf *pf = vsi->back;
1562         u16 sections = 0;
1563         u8 netdev_tc = 0;
1564         u16 numtc = 0;
1565         u16 qcount;
1566         u8 offset;
1567         u16 qmap;
1568         int i;
1569         u16 num_tc_qps = 0;
1570
1571         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1572         offset = 0;
1573
1574         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1575                 /* Find numtc from enabled TC bitmap */
1576                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1577                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1578                                 numtc++;
1579                 }
1580                 if (!numtc) {
1581                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1582                         numtc = 1;
1583                 }
1584         } else {
1585                 /* At least TC0 is enabled in case of non-DCB case */
1586                 numtc = 1;
1587         }
1588
1589         vsi->tc_config.numtc = numtc;
1590         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1591         /* Number of queues per enabled TC */
1592         /* In MFP case we can have a much lower count of MSIx
1593          * vectors available and so we need to lower the used
1594          * q count.
1595          */
1596         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1597                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1598         else
1599                 qcount = vsi->alloc_queue_pairs;
1600         num_tc_qps = qcount / numtc;
1601         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1602
1603         /* Setup queue offset/count for all TCs for given VSI */
1604         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1605                 /* See if the given TC is enabled for the given VSI */
1606                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1607                         /* TC is enabled */
1608                         int pow, num_qps;
1609
1610                         switch (vsi->type) {
1611                         case I40E_VSI_MAIN:
1612                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1613                                 break;
1614 #ifdef I40E_FCOE
1615                         case I40E_VSI_FCOE:
1616                                 qcount = num_tc_qps;
1617                                 break;
1618 #endif
1619                         case I40E_VSI_FDIR:
1620                         case I40E_VSI_SRIOV:
1621                         case I40E_VSI_VMDQ2:
1622                         default:
1623                                 qcount = num_tc_qps;
1624                                 WARN_ON(i != 0);
1625                                 break;
1626                         }
1627                         vsi->tc_config.tc_info[i].qoffset = offset;
1628                         vsi->tc_config.tc_info[i].qcount = qcount;
1629
1630                         /* find the next higher power-of-2 of num queue pairs */
1631                         num_qps = qcount;
1632                         pow = 0;
1633                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1634                                 pow++;
1635                                 num_qps >>= 1;
1636                         }
1637
1638                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1639                         qmap =
1640                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1641                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1642
1643                         offset += qcount;
1644                 } else {
1645                         /* TC is not enabled so set the offset to
1646                          * default queue and allocate one queue
1647                          * for the given TC.
1648                          */
1649                         vsi->tc_config.tc_info[i].qoffset = 0;
1650                         vsi->tc_config.tc_info[i].qcount = 1;
1651                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1652
1653                         qmap = 0;
1654                 }
1655                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1656         }
1657
1658         /* Set actual Tx/Rx queue pairs */
1659         vsi->num_queue_pairs = offset;
1660         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1661                 if (vsi->req_queue_pairs > 0)
1662                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1663                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1664                         vsi->num_queue_pairs = pf->num_lan_msix;
1665         }
1666
1667         /* Scheduler section valid can only be set for ADD VSI */
1668         if (is_add) {
1669                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1670
1671                 ctxt->info.up_enable_bits = enabled_tc;
1672         }
1673         if (vsi->type == I40E_VSI_SRIOV) {
1674                 ctxt->info.mapping_flags |=
1675                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1676                 for (i = 0; i < vsi->num_queue_pairs; i++)
1677                         ctxt->info.queue_mapping[i] =
1678                                                cpu_to_le16(vsi->base_queue + i);
1679         } else {
1680                 ctxt->info.mapping_flags |=
1681                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1682                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1683         }
1684         ctxt->info.valid_sections |= cpu_to_le16(sections);
1685 }
1686
1687 /**
1688  * i40e_set_rx_mode - NDO callback to set the netdev filters
1689  * @netdev: network interface device structure
1690  **/
1691 #ifdef I40E_FCOE
1692 void i40e_set_rx_mode(struct net_device *netdev)
1693 #else
1694 static void i40e_set_rx_mode(struct net_device *netdev)
1695 #endif
1696 {
1697         struct i40e_netdev_priv *np = netdev_priv(netdev);
1698         struct i40e_mac_filter *f, *ftmp;
1699         struct i40e_vsi *vsi = np->vsi;
1700         struct netdev_hw_addr *uca;
1701         struct netdev_hw_addr *mca;
1702         struct netdev_hw_addr *ha;
1703
1704         /* add addr if not already in the filter list */
1705         netdev_for_each_uc_addr(uca, netdev) {
1706                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1707                         if (i40e_is_vsi_in_vlan(vsi))
1708                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1709                                                      false, true);
1710                         else
1711                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1712                                                 false, true);
1713                 }
1714         }
1715
1716         netdev_for_each_mc_addr(mca, netdev) {
1717                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1718                         if (i40e_is_vsi_in_vlan(vsi))
1719                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1720                                                      false, true);
1721                         else
1722                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1723                                                 false, true);
1724                 }
1725         }
1726
1727         /* remove filter if not in netdev list */
1728         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1729
1730                 if (!f->is_netdev)
1731                         continue;
1732
1733                 netdev_for_each_mc_addr(mca, netdev)
1734                         if (ether_addr_equal(mca->addr, f->macaddr))
1735                                 goto bottom_of_search_loop;
1736
1737                 netdev_for_each_uc_addr(uca, netdev)
1738                         if (ether_addr_equal(uca->addr, f->macaddr))
1739                                 goto bottom_of_search_loop;
1740
1741                 for_each_dev_addr(netdev, ha)
1742                         if (ether_addr_equal(ha->addr, f->macaddr))
1743                                 goto bottom_of_search_loop;
1744
1745                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1746                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1747
1748 bottom_of_search_loop:
1749                 continue;
1750         }
1751
1752         /* check for other flag changes */
1753         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1754                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1755                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1756         }
1757 }
1758
1759 /**
1760  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1761  * @vsi: ptr to the VSI
1762  * @grab_rtnl: whether RTNL needs to be grabbed
1763  *
1764  * Push any outstanding VSI filter changes through the AdminQ.
1765  *
1766  * Returns 0 or error value
1767  **/
1768 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1769 {
1770         struct i40e_mac_filter *f, *ftmp;
1771         bool promisc_forced_on = false;
1772         bool add_happened = false;
1773         int filter_list_len = 0;
1774         u32 changed_flags = 0;
1775         i40e_status ret = 0;
1776         struct i40e_pf *pf;
1777         int num_add = 0;
1778         int num_del = 0;
1779         int aq_err = 0;
1780         u16 cmd_flags;
1781
1782         /* empty array typed pointers, kcalloc later */
1783         struct i40e_aqc_add_macvlan_element_data *add_list;
1784         struct i40e_aqc_remove_macvlan_element_data *del_list;
1785
1786         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1787                 usleep_range(1000, 2000);
1788         pf = vsi->back;
1789
1790         if (vsi->netdev) {
1791                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1792                 vsi->current_netdev_flags = vsi->netdev->flags;
1793         }
1794
1795         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1796                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1797
1798                 filter_list_len = pf->hw.aq.asq_buf_size /
1799                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1800                 del_list = kcalloc(filter_list_len,
1801                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1802                             GFP_KERNEL);
1803                 if (!del_list)
1804                         return -ENOMEM;
1805
1806                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1807                         if (!f->changed)
1808                                 continue;
1809
1810                         if (f->counter != 0)
1811                                 continue;
1812                         f->changed = false;
1813                         cmd_flags = 0;
1814
1815                         /* add to delete list */
1816                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1817                         del_list[num_del].vlan_tag =
1818                                 cpu_to_le16((u16)(f->vlan ==
1819                                             I40E_VLAN_ANY ? 0 : f->vlan));
1820
1821                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1822                         del_list[num_del].flags = cmd_flags;
1823                         num_del++;
1824
1825                         /* unlink from filter list */
1826                         list_del(&f->list);
1827                         kfree(f);
1828
1829                         /* flush a full buffer */
1830                         if (num_del == filter_list_len) {
1831                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1832                                                   vsi->seid, del_list, num_del,
1833                                                   NULL);
1834                                 aq_err = pf->hw.aq.asq_last_status;
1835                                 num_del = 0;
1836                                 memset(del_list, 0, sizeof(*del_list));
1837
1838                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1839                                         dev_info(&pf->pdev->dev,
1840                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1841                                                  i40e_stat_str(&pf->hw, ret),
1842                                                  i40e_aq_str(&pf->hw, aq_err));
1843                         }
1844                 }
1845                 if (num_del) {
1846                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1847                                                      del_list, num_del, NULL);
1848                         aq_err = pf->hw.aq.asq_last_status;
1849                         num_del = 0;
1850
1851                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1852                                 dev_info(&pf->pdev->dev,
1853                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1854                                          i40e_stat_str(&pf->hw, ret),
1855                                          i40e_aq_str(&pf->hw, aq_err));
1856                 }
1857
1858                 kfree(del_list);
1859                 del_list = NULL;
1860
1861                 /* do all the adds now */
1862                 filter_list_len = pf->hw.aq.asq_buf_size /
1863                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1864                 add_list = kcalloc(filter_list_len,
1865                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1866                                GFP_KERNEL);
1867                 if (!add_list)
1868                         return -ENOMEM;
1869
1870                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1871                         if (!f->changed)
1872                                 continue;
1873
1874                         if (f->counter == 0)
1875                                 continue;
1876                         f->changed = false;
1877                         add_happened = true;
1878                         cmd_flags = 0;
1879
1880                         /* add to add array */
1881                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1882                         add_list[num_add].vlan_tag =
1883                                 cpu_to_le16(
1884                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1885                         add_list[num_add].queue_number = 0;
1886
1887                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1888                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1889                         num_add++;
1890
1891                         /* flush a full buffer */
1892                         if (num_add == filter_list_len) {
1893                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1894                                                           add_list, num_add,
1895                                                           NULL);
1896                                 aq_err = pf->hw.aq.asq_last_status;
1897                                 num_add = 0;
1898
1899                                 if (ret)
1900                                         break;
1901                                 memset(add_list, 0, sizeof(*add_list));
1902                         }
1903                 }
1904                 if (num_add) {
1905                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1906                                                   add_list, num_add, NULL);
1907                         aq_err = pf->hw.aq.asq_last_status;
1908                         num_add = 0;
1909                 }
1910                 kfree(add_list);
1911                 add_list = NULL;
1912
1913                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1914                         dev_info(&pf->pdev->dev,
1915                                  "add filter failed, err %s aq_err %s\n",
1916                                  i40e_stat_str(&pf->hw, ret),
1917                                  i40e_aq_str(&pf->hw, aq_err));
1918                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1919                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1920                                       &vsi->state)) {
1921                                 promisc_forced_on = true;
1922                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1923                                         &vsi->state);
1924                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1925                         }
1926                 }
1927         }
1928
1929         /* check for changes in promiscuous modes */
1930         if (changed_flags & IFF_ALLMULTI) {
1931                 bool cur_multipromisc;
1932                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1933                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1934                                                             vsi->seid,
1935                                                             cur_multipromisc,
1936                                                             NULL);
1937                 if (ret)
1938                         dev_info(&pf->pdev->dev,
1939                                  "set multi promisc failed, err %s aq_err %s\n",
1940                                  i40e_stat_str(&pf->hw, ret),
1941                                  i40e_aq_str(&pf->hw,
1942                                              pf->hw.aq.asq_last_status));
1943         }
1944         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1945                 bool cur_promisc;
1946                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1947                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1948                                         &vsi->state));
1949                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1950                         /* set defport ON for Main VSI instead of true promisc
1951                          * this way we will get all unicast/multicast and VLAN
1952                          * promisc behavior but will not get VF or VMDq traffic
1953                          * replicated on the Main VSI.
1954                          */
1955                         if (pf->cur_promisc != cur_promisc) {
1956                                 pf->cur_promisc = cur_promisc;
1957                                 if (grab_rtnl)
1958                                         i40e_do_reset_safe(pf,
1959                                                 BIT(__I40E_PF_RESET_REQUESTED));
1960                                 else
1961                                         i40e_do_reset(pf,
1962                                                 BIT(__I40E_PF_RESET_REQUESTED));
1963                         }
1964                 } else {
1965                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1966                                                           &vsi->back->hw,
1967                                                           vsi->seid,
1968                                                           cur_promisc, NULL);
1969                         if (ret)
1970                                 dev_info(&pf->pdev->dev,
1971                                          "set unicast promisc failed, err %d, aq_err %d\n",
1972                                          ret, pf->hw.aq.asq_last_status);
1973                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1974                                                           &vsi->back->hw,
1975                                                           vsi->seid,
1976                                                           cur_promisc, NULL);
1977                         if (ret)
1978                                 dev_info(&pf->pdev->dev,
1979                                          "set multicast promisc failed, err %d, aq_err %d\n",
1980                                          ret, pf->hw.aq.asq_last_status);
1981                 }
1982                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1983                                                 vsi->seid,
1984                                                 cur_promisc, NULL);
1985                 if (ret)
1986                         dev_info(&pf->pdev->dev,
1987                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1988                                  i40e_stat_str(&pf->hw, ret),
1989                                  i40e_aq_str(&pf->hw,
1990                                              pf->hw.aq.asq_last_status));
1991         }
1992
1993         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1994         return 0;
1995 }
1996
1997 /**
1998  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1999  * @pf: board private structure
2000  **/
2001 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2002 {
2003         int v;
2004
2005         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2006                 return;
2007         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2008
2009         for (v = 0; v < pf->num_alloc_vsi; v++) {
2010                 if (pf->vsi[v] &&
2011                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2012                         i40e_sync_vsi_filters(pf->vsi[v], true);
2013         }
2014 }
2015
2016 /**
2017  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2018  * @netdev: network interface device structure
2019  * @new_mtu: new value for maximum frame size
2020  *
2021  * Returns 0 on success, negative on failure
2022  **/
2023 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2024 {
2025         struct i40e_netdev_priv *np = netdev_priv(netdev);
2026         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2027         struct i40e_vsi *vsi = np->vsi;
2028
2029         /* MTU < 68 is an error and causes problems on some kernels */
2030         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2031                 return -EINVAL;
2032
2033         netdev_info(netdev, "changing MTU from %d to %d\n",
2034                     netdev->mtu, new_mtu);
2035         netdev->mtu = new_mtu;
2036         if (netif_running(netdev))
2037                 i40e_vsi_reinit_locked(vsi);
2038
2039         return 0;
2040 }
2041
2042 /**
2043  * i40e_ioctl - Access the hwtstamp interface
2044  * @netdev: network interface device structure
2045  * @ifr: interface request data
2046  * @cmd: ioctl command
2047  **/
2048 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2049 {
2050         struct i40e_netdev_priv *np = netdev_priv(netdev);
2051         struct i40e_pf *pf = np->vsi->back;
2052
2053         switch (cmd) {
2054         case SIOCGHWTSTAMP:
2055                 return i40e_ptp_get_ts_config(pf, ifr);
2056         case SIOCSHWTSTAMP:
2057                 return i40e_ptp_set_ts_config(pf, ifr);
2058         default:
2059                 return -EOPNOTSUPP;
2060         }
2061 }
2062
2063 /**
2064  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2065  * @vsi: the vsi being adjusted
2066  **/
2067 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2068 {
2069         struct i40e_vsi_context ctxt;
2070         i40e_status ret;
2071
2072         if ((vsi->info.valid_sections &
2073              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2074             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2075                 return;  /* already enabled */
2076
2077         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2078         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2079                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2080
2081         ctxt.seid = vsi->seid;
2082         ctxt.info = vsi->info;
2083         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2084         if (ret) {
2085                 dev_info(&vsi->back->pdev->dev,
2086                          "update vlan stripping failed, err %s aq_err %s\n",
2087                          i40e_stat_str(&vsi->back->hw, ret),
2088                          i40e_aq_str(&vsi->back->hw,
2089                                      vsi->back->hw.aq.asq_last_status));
2090         }
2091 }
2092
2093 /**
2094  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2095  * @vsi: the vsi being adjusted
2096  **/
2097 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2098 {
2099         struct i40e_vsi_context ctxt;
2100         i40e_status ret;
2101
2102         if ((vsi->info.valid_sections &
2103              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2104             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2105              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2106                 return;  /* already disabled */
2107
2108         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2109         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2110                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2111
2112         ctxt.seid = vsi->seid;
2113         ctxt.info = vsi->info;
2114         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2115         if (ret) {
2116                 dev_info(&vsi->back->pdev->dev,
2117                          "update vlan stripping failed, err %s aq_err %s\n",
2118                          i40e_stat_str(&vsi->back->hw, ret),
2119                          i40e_aq_str(&vsi->back->hw,
2120                                      vsi->back->hw.aq.asq_last_status));
2121         }
2122 }
2123
2124 /**
2125  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2126  * @netdev: network interface to be adjusted
2127  * @features: netdev features to test if VLAN offload is enabled or not
2128  **/
2129 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2130 {
2131         struct i40e_netdev_priv *np = netdev_priv(netdev);
2132         struct i40e_vsi *vsi = np->vsi;
2133
2134         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2135                 i40e_vlan_stripping_enable(vsi);
2136         else
2137                 i40e_vlan_stripping_disable(vsi);
2138 }
2139
2140 /**
2141  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2142  * @vsi: the vsi being configured
2143  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2144  **/
2145 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2146 {
2147         struct i40e_mac_filter *f, *add_f;
2148         bool is_netdev, is_vf;
2149
2150         is_vf = (vsi->type == I40E_VSI_SRIOV);
2151         is_netdev = !!(vsi->netdev);
2152
2153         if (is_netdev) {
2154                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2155                                         is_vf, is_netdev);
2156                 if (!add_f) {
2157                         dev_info(&vsi->back->pdev->dev,
2158                                  "Could not add vlan filter %d for %pM\n",
2159                                  vid, vsi->netdev->dev_addr);
2160                         return -ENOMEM;
2161                 }
2162         }
2163
2164         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2165                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2166                 if (!add_f) {
2167                         dev_info(&vsi->back->pdev->dev,
2168                                  "Could not add vlan filter %d for %pM\n",
2169                                  vid, f->macaddr);
2170                         return -ENOMEM;
2171                 }
2172         }
2173
2174         /* Now if we add a vlan tag, make sure to check if it is the first
2175          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2176          * with 0, so we now accept untagged and specified tagged traffic
2177          * (and not any taged and untagged)
2178          */
2179         if (vid > 0) {
2180                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2181                                                   I40E_VLAN_ANY,
2182                                                   is_vf, is_netdev)) {
2183                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2184                                         I40E_VLAN_ANY, is_vf, is_netdev);
2185                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2186                                                 is_vf, is_netdev);
2187                         if (!add_f) {
2188                                 dev_info(&vsi->back->pdev->dev,
2189                                          "Could not add filter 0 for %pM\n",
2190                                          vsi->netdev->dev_addr);
2191                                 return -ENOMEM;
2192                         }
2193                 }
2194         }
2195
2196         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2197         if (vid > 0 && !vsi->info.pvid) {
2198                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2199                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2200                                              is_vf, is_netdev)) {
2201                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2202                                                 is_vf, is_netdev);
2203                                 add_f = i40e_add_filter(vsi, f->macaddr,
2204                                                         0, is_vf, is_netdev);
2205                                 if (!add_f) {
2206                                         dev_info(&vsi->back->pdev->dev,
2207                                                  "Could not add filter 0 for %pM\n",
2208                                                  f->macaddr);
2209                                         return -ENOMEM;
2210                                 }
2211                         }
2212                 }
2213         }
2214
2215         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2216             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2217                 return 0;
2218
2219         return i40e_sync_vsi_filters(vsi, false);
2220 }
2221
2222 /**
2223  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2224  * @vsi: the vsi being configured
2225  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2226  *
2227  * Return: 0 on success or negative otherwise
2228  **/
2229 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2230 {
2231         struct net_device *netdev = vsi->netdev;
2232         struct i40e_mac_filter *f, *add_f;
2233         bool is_vf, is_netdev;
2234         int filter_count = 0;
2235
2236         is_vf = (vsi->type == I40E_VSI_SRIOV);
2237         is_netdev = !!(netdev);
2238
2239         if (is_netdev)
2240                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2241
2242         list_for_each_entry(f, &vsi->mac_filter_list, list)
2243                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2244
2245         /* go through all the filters for this VSI and if there is only
2246          * vid == 0 it means there are no other filters, so vid 0 must
2247          * be replaced with -1. This signifies that we should from now
2248          * on accept any traffic (with any tag present, or untagged)
2249          */
2250         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2251                 if (is_netdev) {
2252                         if (f->vlan &&
2253                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2254                                 filter_count++;
2255                 }
2256
2257                 if (f->vlan)
2258                         filter_count++;
2259         }
2260
2261         if (!filter_count && is_netdev) {
2262                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2263                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2264                                     is_vf, is_netdev);
2265                 if (!f) {
2266                         dev_info(&vsi->back->pdev->dev,
2267                                  "Could not add filter %d for %pM\n",
2268                                  I40E_VLAN_ANY, netdev->dev_addr);
2269                         return -ENOMEM;
2270                 }
2271         }
2272
2273         if (!filter_count) {
2274                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2275                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2276                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2277                                             is_vf, is_netdev);
2278                         if (!add_f) {
2279                                 dev_info(&vsi->back->pdev->dev,
2280                                          "Could not add filter %d for %pM\n",
2281                                          I40E_VLAN_ANY, f->macaddr);
2282                                 return -ENOMEM;
2283                         }
2284                 }
2285         }
2286
2287         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2288             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2289                 return 0;
2290
2291         return i40e_sync_vsi_filters(vsi, false);
2292 }
2293
2294 /**
2295  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2296  * @netdev: network interface to be adjusted
2297  * @vid: vlan id to be added
2298  *
2299  * net_device_ops implementation for adding vlan ids
2300  **/
2301 #ifdef I40E_FCOE
2302 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2303                          __always_unused __be16 proto, u16 vid)
2304 #else
2305 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2306                                 __always_unused __be16 proto, u16 vid)
2307 #endif
2308 {
2309         struct i40e_netdev_priv *np = netdev_priv(netdev);
2310         struct i40e_vsi *vsi = np->vsi;
2311         int ret = 0;
2312
2313         if (vid > 4095)
2314                 return -EINVAL;
2315
2316         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2317
2318         /* If the network stack called us with vid = 0 then
2319          * it is asking to receive priority tagged packets with
2320          * vlan id 0.  Our HW receives them by default when configured
2321          * to receive untagged packets so there is no need to add an
2322          * extra filter for vlan 0 tagged packets.
2323          */
2324         if (vid)
2325                 ret = i40e_vsi_add_vlan(vsi, vid);
2326
2327         if (!ret && (vid < VLAN_N_VID))
2328                 set_bit(vid, vsi->active_vlans);
2329
2330         return ret;
2331 }
2332
2333 /**
2334  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2335  * @netdev: network interface to be adjusted
2336  * @vid: vlan id to be removed
2337  *
2338  * net_device_ops implementation for removing vlan ids
2339  **/
2340 #ifdef I40E_FCOE
2341 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2342                           __always_unused __be16 proto, u16 vid)
2343 #else
2344 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2345                                  __always_unused __be16 proto, u16 vid)
2346 #endif
2347 {
2348         struct i40e_netdev_priv *np = netdev_priv(netdev);
2349         struct i40e_vsi *vsi = np->vsi;
2350
2351         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2352
2353         /* return code is ignored as there is nothing a user
2354          * can do about failure to remove and a log message was
2355          * already printed from the other function
2356          */
2357         i40e_vsi_kill_vlan(vsi, vid);
2358
2359         clear_bit(vid, vsi->active_vlans);
2360
2361         return 0;
2362 }
2363
2364 /**
2365  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2366  * @vsi: the vsi being brought back up
2367  **/
2368 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2369 {
2370         u16 vid;
2371
2372         if (!vsi->netdev)
2373                 return;
2374
2375         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2376
2377         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2378                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2379                                      vid);
2380 }
2381
2382 /**
2383  * i40e_vsi_add_pvid - Add pvid for the VSI
2384  * @vsi: the vsi being adjusted
2385  * @vid: the vlan id to set as a PVID
2386  **/
2387 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2388 {
2389         struct i40e_vsi_context ctxt;
2390         i40e_status ret;
2391
2392         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2393         vsi->info.pvid = cpu_to_le16(vid);
2394         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2395                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2396                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2397
2398         ctxt.seid = vsi->seid;
2399         ctxt.info = vsi->info;
2400         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2401         if (ret) {
2402                 dev_info(&vsi->back->pdev->dev,
2403                          "add pvid failed, err %s aq_err %s\n",
2404                          i40e_stat_str(&vsi->back->hw, ret),
2405                          i40e_aq_str(&vsi->back->hw,
2406                                      vsi->back->hw.aq.asq_last_status));
2407                 return -ENOENT;
2408         }
2409
2410         return 0;
2411 }
2412
2413 /**
2414  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2415  * @vsi: the vsi being adjusted
2416  *
2417  * Just use the vlan_rx_register() service to put it back to normal
2418  **/
2419 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2420 {
2421         i40e_vlan_stripping_disable(vsi);
2422
2423         vsi->info.pvid = 0;
2424 }
2425
2426 /**
2427  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2428  * @vsi: ptr to the VSI
2429  *
2430  * If this function returns with an error, then it's possible one or
2431  * more of the rings is populated (while the rest are not).  It is the
2432  * callers duty to clean those orphaned rings.
2433  *
2434  * Return 0 on success, negative on failure
2435  **/
2436 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2437 {
2438         int i, err = 0;
2439
2440         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2441                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2442
2443         return err;
2444 }
2445
2446 /**
2447  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2448  * @vsi: ptr to the VSI
2449  *
2450  * Free VSI's transmit software resources
2451  **/
2452 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2453 {
2454         int i;
2455
2456         if (!vsi->tx_rings)
2457                 return;
2458
2459         for (i = 0; i < vsi->num_queue_pairs; i++)
2460                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2461                         i40e_free_tx_resources(vsi->tx_rings[i]);
2462 }
2463
2464 /**
2465  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2466  * @vsi: ptr to the VSI
2467  *
2468  * If this function returns with an error, then it's possible one or
2469  * more of the rings is populated (while the rest are not).  It is the
2470  * callers duty to clean those orphaned rings.
2471  *
2472  * Return 0 on success, negative on failure
2473  **/
2474 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2475 {
2476         int i, err = 0;
2477
2478         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2479                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2480 #ifdef I40E_FCOE
2481         i40e_fcoe_setup_ddp_resources(vsi);
2482 #endif
2483         return err;
2484 }
2485
2486 /**
2487  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2488  * @vsi: ptr to the VSI
2489  *
2490  * Free all receive software resources
2491  **/
2492 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2493 {
2494         int i;
2495
2496         if (!vsi->rx_rings)
2497                 return;
2498
2499         for (i = 0; i < vsi->num_queue_pairs; i++)
2500                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2501                         i40e_free_rx_resources(vsi->rx_rings[i]);
2502 #ifdef I40E_FCOE
2503         i40e_fcoe_free_ddp_resources(vsi);
2504 #endif
2505 }
2506
2507 /**
2508  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2509  * @ring: The Tx ring to configure
2510  *
2511  * This enables/disables XPS for a given Tx descriptor ring
2512  * based on the TCs enabled for the VSI that ring belongs to.
2513  **/
2514 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2515 {
2516         struct i40e_vsi *vsi = ring->vsi;
2517         cpumask_var_t mask;
2518
2519         if (!ring->q_vector || !ring->netdev)
2520                 return;
2521
2522         /* Single TC mode enable XPS */
2523         if (vsi->tc_config.numtc <= 1) {
2524                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2525                         netif_set_xps_queue(ring->netdev,
2526                                             &ring->q_vector->affinity_mask,
2527                                             ring->queue_index);
2528         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2529                 /* Disable XPS to allow selection based on TC */
2530                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2531                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2532                 free_cpumask_var(mask);
2533         }
2534 }
2535
2536 /**
2537  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2538  * @ring: The Tx ring to configure
2539  *
2540  * Configure the Tx descriptor ring in the HMC context.
2541  **/
2542 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2543 {
2544         struct i40e_vsi *vsi = ring->vsi;
2545         u16 pf_q = vsi->base_queue + ring->queue_index;
2546         struct i40e_hw *hw = &vsi->back->hw;
2547         struct i40e_hmc_obj_txq tx_ctx;
2548         i40e_status err = 0;
2549         u32 qtx_ctl = 0;
2550
2551         /* some ATR related tx ring init */
2552         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2553                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2554                 ring->atr_count = 0;
2555         } else {
2556                 ring->atr_sample_rate = 0;
2557         }
2558
2559         /* configure XPS */
2560         i40e_config_xps_tx_ring(ring);
2561
2562         /* clear the context structure first */
2563         memset(&tx_ctx, 0, sizeof(tx_ctx));
2564
2565         tx_ctx.new_context = 1;
2566         tx_ctx.base = (ring->dma / 128);
2567         tx_ctx.qlen = ring->count;
2568         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2569                                                I40E_FLAG_FD_ATR_ENABLED));
2570 #ifdef I40E_FCOE
2571         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2572 #endif
2573         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2574         /* FDIR VSI tx ring can still use RS bit and writebacks */
2575         if (vsi->type != I40E_VSI_FDIR)
2576                 tx_ctx.head_wb_ena = 1;
2577         tx_ctx.head_wb_addr = ring->dma +
2578                               (ring->count * sizeof(struct i40e_tx_desc));
2579
2580         /* As part of VSI creation/update, FW allocates certain
2581          * Tx arbitration queue sets for each TC enabled for
2582          * the VSI. The FW returns the handles to these queue
2583          * sets as part of the response buffer to Add VSI,
2584          * Update VSI, etc. AQ commands. It is expected that
2585          * these queue set handles be associated with the Tx
2586          * queues by the driver as part of the TX queue context
2587          * initialization. This has to be done regardless of
2588          * DCB as by default everything is mapped to TC0.
2589          */
2590         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2591         tx_ctx.rdylist_act = 0;
2592
2593         /* clear the context in the HMC */
2594         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2595         if (err) {
2596                 dev_info(&vsi->back->pdev->dev,
2597                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2598                          ring->queue_index, pf_q, err);
2599                 return -ENOMEM;
2600         }
2601
2602         /* set the context in the HMC */
2603         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2604         if (err) {
2605                 dev_info(&vsi->back->pdev->dev,
2606                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2607                          ring->queue_index, pf_q, err);
2608                 return -ENOMEM;
2609         }
2610
2611         /* Now associate this queue with this PCI function */
2612         if (vsi->type == I40E_VSI_VMDQ2) {
2613                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2614                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2615                            I40E_QTX_CTL_VFVM_INDX_MASK;
2616         } else {
2617                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2618         }
2619
2620         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2621                     I40E_QTX_CTL_PF_INDX_MASK);
2622         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2623         i40e_flush(hw);
2624
2625         /* cache tail off for easier writes later */
2626         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2627
2628         return 0;
2629 }
2630
2631 /**
2632  * i40e_configure_rx_ring - Configure a receive ring context
2633  * @ring: The Rx ring to configure
2634  *
2635  * Configure the Rx descriptor ring in the HMC context.
2636  **/
2637 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2638 {
2639         struct i40e_vsi *vsi = ring->vsi;
2640         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2641         u16 pf_q = vsi->base_queue + ring->queue_index;
2642         struct i40e_hw *hw = &vsi->back->hw;
2643         struct i40e_hmc_obj_rxq rx_ctx;
2644         i40e_status err = 0;
2645
2646         ring->state = 0;
2647
2648         /* clear the context structure first */
2649         memset(&rx_ctx, 0, sizeof(rx_ctx));
2650
2651         ring->rx_buf_len = vsi->rx_buf_len;
2652         ring->rx_hdr_len = vsi->rx_hdr_len;
2653
2654         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2655         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2656
2657         rx_ctx.base = (ring->dma / 128);
2658         rx_ctx.qlen = ring->count;
2659
2660         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2661                 set_ring_16byte_desc_enabled(ring);
2662                 rx_ctx.dsize = 0;
2663         } else {
2664                 rx_ctx.dsize = 1;
2665         }
2666
2667         rx_ctx.dtype = vsi->dtype;
2668         if (vsi->dtype) {
2669                 set_ring_ps_enabled(ring);
2670                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2671                                   I40E_RX_SPLIT_IP      |
2672                                   I40E_RX_SPLIT_TCP_UDP |
2673                                   I40E_RX_SPLIT_SCTP;
2674         } else {
2675                 rx_ctx.hsplit_0 = 0;
2676         }
2677
2678         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2679                                   (chain_len * ring->rx_buf_len));
2680         if (hw->revision_id == 0)
2681                 rx_ctx.lrxqthresh = 0;
2682         else
2683                 rx_ctx.lrxqthresh = 2;
2684         rx_ctx.crcstrip = 1;
2685         rx_ctx.l2tsel = 1;
2686         /* this controls whether VLAN is stripped from inner headers */
2687         rx_ctx.showiv = 0;
2688 #ifdef I40E_FCOE
2689         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2690 #endif
2691         /* set the prefena field to 1 because the manual says to */
2692         rx_ctx.prefena = 1;
2693
2694         /* clear the context in the HMC */
2695         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2696         if (err) {
2697                 dev_info(&vsi->back->pdev->dev,
2698                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2699                          ring->queue_index, pf_q, err);
2700                 return -ENOMEM;
2701         }
2702
2703         /* set the context in the HMC */
2704         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2705         if (err) {
2706                 dev_info(&vsi->back->pdev->dev,
2707                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2708                          ring->queue_index, pf_q, err);
2709                 return -ENOMEM;
2710         }
2711
2712         /* cache tail for quicker writes, and clear the reg before use */
2713         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2714         writel(0, ring->tail);
2715
2716         if (ring_is_ps_enabled(ring)) {
2717                 i40e_alloc_rx_headers(ring);
2718                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2719         } else {
2720                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2721         }
2722
2723         return 0;
2724 }
2725
2726 /**
2727  * i40e_vsi_configure_tx - Configure the VSI for Tx
2728  * @vsi: VSI structure describing this set of rings and resources
2729  *
2730  * Configure the Tx VSI for operation.
2731  **/
2732 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2733 {
2734         int err = 0;
2735         u16 i;
2736
2737         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2738                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2739
2740         return err;
2741 }
2742
2743 /**
2744  * i40e_vsi_configure_rx - Configure the VSI for Rx
2745  * @vsi: the VSI being configured
2746  *
2747  * Configure the Rx VSI for operation.
2748  **/
2749 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2750 {
2751         int err = 0;
2752         u16 i;
2753
2754         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2755                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2756                                + ETH_FCS_LEN + VLAN_HLEN;
2757         else
2758                 vsi->max_frame = I40E_RXBUFFER_2048;
2759
2760         /* figure out correct receive buffer length */
2761         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2762                                     I40E_FLAG_RX_PS_ENABLED)) {
2763         case I40E_FLAG_RX_1BUF_ENABLED:
2764                 vsi->rx_hdr_len = 0;
2765                 vsi->rx_buf_len = vsi->max_frame;
2766                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2767                 break;
2768         case I40E_FLAG_RX_PS_ENABLED:
2769                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2770                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2771                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2772                 break;
2773         default:
2774                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2775                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2776                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2777                 break;
2778         }
2779
2780 #ifdef I40E_FCOE
2781         /* setup rx buffer for FCoE */
2782         if ((vsi->type == I40E_VSI_FCOE) &&
2783             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2784                 vsi->rx_hdr_len = 0;
2785                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2786                 vsi->max_frame = I40E_RXBUFFER_3072;
2787                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2788         }
2789
2790 #endif /* I40E_FCOE */
2791         /* round up for the chip's needs */
2792         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2793                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2794         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2795                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2796
2797         /* set up individual rings */
2798         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2799                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2800
2801         return err;
2802 }
2803
2804 /**
2805  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2806  * @vsi: ptr to the VSI
2807  **/
2808 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2809 {
2810         struct i40e_ring *tx_ring, *rx_ring;
2811         u16 qoffset, qcount;
2812         int i, n;
2813
2814         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2815                 /* Reset the TC information */
2816                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2817                         rx_ring = vsi->rx_rings[i];
2818                         tx_ring = vsi->tx_rings[i];
2819                         rx_ring->dcb_tc = 0;
2820                         tx_ring->dcb_tc = 0;
2821                 }
2822         }
2823
2824         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2825                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2826                         continue;
2827
2828                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2829                 qcount = vsi->tc_config.tc_info[n].qcount;
2830                 for (i = qoffset; i < (qoffset + qcount); i++) {
2831                         rx_ring = vsi->rx_rings[i];
2832                         tx_ring = vsi->tx_rings[i];
2833                         rx_ring->dcb_tc = n;
2834                         tx_ring->dcb_tc = n;
2835                 }
2836         }
2837 }
2838
2839 /**
2840  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2841  * @vsi: ptr to the VSI
2842  **/
2843 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2844 {
2845         if (vsi->netdev)
2846                 i40e_set_rx_mode(vsi->netdev);
2847 }
2848
2849 /**
2850  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2851  * @vsi: Pointer to the targeted VSI
2852  *
2853  * This function replays the hlist on the hw where all the SB Flow Director
2854  * filters were saved.
2855  **/
2856 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2857 {
2858         struct i40e_fdir_filter *filter;
2859         struct i40e_pf *pf = vsi->back;
2860         struct hlist_node *node;
2861
2862         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2863                 return;
2864
2865         hlist_for_each_entry_safe(filter, node,
2866                                   &pf->fdir_filter_list, fdir_node) {
2867                 i40e_add_del_fdir(vsi, filter, true);
2868         }
2869 }
2870
2871 /**
2872  * i40e_vsi_configure - Set up the VSI for action
2873  * @vsi: the VSI being configured
2874  **/
2875 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2876 {
2877         int err;
2878
2879         i40e_set_vsi_rx_mode(vsi);
2880         i40e_restore_vlan(vsi);
2881         i40e_vsi_config_dcb_rings(vsi);
2882         err = i40e_vsi_configure_tx(vsi);
2883         if (!err)
2884                 err = i40e_vsi_configure_rx(vsi);
2885
2886         return err;
2887 }
2888
2889 /**
2890  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2891  * @vsi: the VSI being configured
2892  **/
2893 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2894 {
2895         struct i40e_pf *pf = vsi->back;
2896         struct i40e_q_vector *q_vector;
2897         struct i40e_hw *hw = &pf->hw;
2898         u16 vector;
2899         int i, q;
2900         u32 val;
2901         u32 qp;
2902
2903         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2904          * and PFINT_LNKLSTn registers, e.g.:
2905          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2906          */
2907         qp = vsi->base_queue;
2908         vector = vsi->base_vector;
2909         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2910                 q_vector = vsi->q_vectors[i];
2911                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2912                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2913                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2914                      q_vector->rx.itr);
2915                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2916                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2917                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2918                      q_vector->tx.itr);
2919
2920                 /* Linked list for the queuepairs assigned to this vector */
2921                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2922                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2923                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2924                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2925                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2926                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2927                               (I40E_QUEUE_TYPE_TX
2928                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2929
2930                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2931
2932                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2933                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2934                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2935                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2936                               (I40E_QUEUE_TYPE_RX
2937                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2938
2939                         /* Terminate the linked list */
2940                         if (q == (q_vector->num_ringpairs - 1))
2941                                 val |= (I40E_QUEUE_END_OF_LIST
2942                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2943
2944                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2945                         qp++;
2946                 }
2947         }
2948
2949         i40e_flush(hw);
2950 }
2951
2952 /**
2953  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2954  * @hw: ptr to the hardware info
2955  **/
2956 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2957 {
2958         struct i40e_hw *hw = &pf->hw;
2959         u32 val;
2960
2961         /* clear things first */
2962         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2963         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2964
2965         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2966               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2967               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2968               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2969               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2970               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2971               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2972               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2973
2974         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2975                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2976
2977         if (pf->flags & I40E_FLAG_PTP)
2978                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2979
2980         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2981
2982         /* SW_ITR_IDX = 0, but don't change INTENA */
2983         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2984                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2985
2986         /* OTHER_ITR_IDX = 0 */
2987         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2988 }
2989
2990 /**
2991  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2992  * @vsi: the VSI being configured
2993  **/
2994 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2995 {
2996         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2997         struct i40e_pf *pf = vsi->back;
2998         struct i40e_hw *hw = &pf->hw;
2999         u32 val;
3000
3001         /* set the ITR configuration */
3002         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3003         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3004         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3005         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3006         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3007         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3008
3009         i40e_enable_misc_int_causes(pf);
3010
3011         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3012         wr32(hw, I40E_PFINT_LNKLST0, 0);
3013
3014         /* Associate the queue pair to the vector and enable the queue int */
3015         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3016               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3017               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3018
3019         wr32(hw, I40E_QINT_RQCTL(0), val);
3020
3021         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3022               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3023               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3024
3025         wr32(hw, I40E_QINT_TQCTL(0), val);
3026         i40e_flush(hw);
3027 }
3028
3029 /**
3030  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3031  * @pf: board private structure
3032  **/
3033 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3034 {
3035         struct i40e_hw *hw = &pf->hw;
3036
3037         wr32(hw, I40E_PFINT_DYN_CTL0,
3038              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3039         i40e_flush(hw);
3040 }
3041
3042 /**
3043  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3044  * @pf: board private structure
3045  **/
3046 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3047 {
3048         struct i40e_hw *hw = &pf->hw;
3049         u32 val;
3050
3051         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3052               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3053               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3054
3055         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3056         i40e_flush(hw);
3057 }
3058
3059 /**
3060  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3061  * @vsi: pointer to a vsi
3062  * @vector: enable a particular Hw Interrupt vector, without base_vector
3063  **/
3064 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3065 {
3066         struct i40e_pf *pf = vsi->back;
3067         struct i40e_hw *hw = &pf->hw;
3068         u32 val;
3069
3070         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3071               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3072               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3073         wr32(hw, I40E_PFINT_DYN_CTLN(vector + vsi->base_vector - 1), val);
3074         /* skip the flush */
3075 }
3076
3077 /**
3078  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3079  * @vsi: pointer to a vsi
3080  * @vector: disable a particular Hw Interrupt vector
3081  **/
3082 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3083 {
3084         struct i40e_pf *pf = vsi->back;
3085         struct i40e_hw *hw = &pf->hw;
3086         u32 val;
3087
3088         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3089         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3090         i40e_flush(hw);
3091 }
3092
3093 /**
3094  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3095  * @irq: interrupt number
3096  * @data: pointer to a q_vector
3097  **/
3098 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3099 {
3100         struct i40e_q_vector *q_vector = data;
3101
3102         if (!q_vector->tx.ring && !q_vector->rx.ring)
3103                 return IRQ_HANDLED;
3104
3105         napi_schedule(&q_vector->napi);
3106
3107         return IRQ_HANDLED;
3108 }
3109
3110 /**
3111  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3112  * @vsi: the VSI being configured
3113  * @basename: name for the vector
3114  *
3115  * Allocates MSI-X vectors and requests interrupts from the kernel.
3116  **/
3117 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3118 {
3119         int q_vectors = vsi->num_q_vectors;
3120         struct i40e_pf *pf = vsi->back;
3121         int base = vsi->base_vector;
3122         int rx_int_idx = 0;
3123         int tx_int_idx = 0;
3124         int vector, err;
3125
3126         for (vector = 0; vector < q_vectors; vector++) {
3127                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3128
3129                 if (q_vector->tx.ring && q_vector->rx.ring) {
3130                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3131                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3132                         tx_int_idx++;
3133                 } else if (q_vector->rx.ring) {
3134                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3135                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3136                 } else if (q_vector->tx.ring) {
3137                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3138                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3139                 } else {
3140                         /* skip this unused q_vector */
3141                         continue;
3142                 }
3143                 err = request_irq(pf->msix_entries[base + vector].vector,
3144                                   vsi->irq_handler,
3145                                   0,
3146                                   q_vector->name,
3147                                   q_vector);
3148                 if (err) {
3149                         dev_info(&pf->pdev->dev,
3150                                  "MSIX request_irq failed, error: %d\n", err);
3151                         goto free_queue_irqs;
3152                 }
3153                 /* assign the mask for this irq */
3154                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3155                                       &q_vector->affinity_mask);
3156         }
3157
3158         vsi->irqs_ready = true;
3159         return 0;
3160
3161 free_queue_irqs:
3162         while (vector) {
3163                 vector--;
3164                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3165                                       NULL);
3166                 free_irq(pf->msix_entries[base + vector].vector,
3167                          &(vsi->q_vectors[vector]));
3168         }
3169         return err;
3170 }
3171
3172 /**
3173  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3174  * @vsi: the VSI being un-configured
3175  **/
3176 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3177 {
3178         struct i40e_pf *pf = vsi->back;
3179         struct i40e_hw *hw = &pf->hw;
3180         int base = vsi->base_vector;
3181         int i;
3182
3183         for (i = 0; i < vsi->num_queue_pairs; i++) {
3184                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3185                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3186         }
3187
3188         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3189                 for (i = vsi->base_vector;
3190                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3191                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3192
3193                 i40e_flush(hw);
3194                 for (i = 0; i < vsi->num_q_vectors; i++)
3195                         synchronize_irq(pf->msix_entries[i + base].vector);
3196         } else {
3197                 /* Legacy and MSI mode - this stops all interrupt handling */
3198                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3199                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3200                 i40e_flush(hw);
3201                 synchronize_irq(pf->pdev->irq);
3202         }
3203 }
3204
3205 /**
3206  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3207  * @vsi: the VSI being configured
3208  **/
3209 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3210 {
3211         struct i40e_pf *pf = vsi->back;
3212         int i;
3213
3214         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3215                 for (i = 0; i < vsi->num_q_vectors; i++)
3216                         i40e_irq_dynamic_enable(vsi, i);
3217         } else {
3218                 i40e_irq_dynamic_enable_icr0(pf);
3219         }
3220
3221         i40e_flush(&pf->hw);
3222         return 0;
3223 }
3224
3225 /**
3226  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3227  * @pf: board private structure
3228  **/
3229 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3230 {
3231         /* Disable ICR 0 */
3232         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3233         i40e_flush(&pf->hw);
3234 }
3235
3236 /**
3237  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3238  * @irq: interrupt number
3239  * @data: pointer to a q_vector
3240  *
3241  * This is the handler used for all MSI/Legacy interrupts, and deals
3242  * with both queue and non-queue interrupts.  This is also used in
3243  * MSIX mode to handle the non-queue interrupts.
3244  **/
3245 static irqreturn_t i40e_intr(int irq, void *data)
3246 {
3247         struct i40e_pf *pf = (struct i40e_pf *)data;
3248         struct i40e_hw *hw = &pf->hw;
3249         irqreturn_t ret = IRQ_NONE;
3250         u32 icr0, icr0_remaining;
3251         u32 val, ena_mask;
3252
3253         icr0 = rd32(hw, I40E_PFINT_ICR0);
3254         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3255
3256         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3257         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3258                 goto enable_intr;
3259
3260         /* if interrupt but no bits showing, must be SWINT */
3261         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3262             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3263                 pf->sw_int_count++;
3264
3265         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3266             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3267                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3268                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3269                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3270         }
3271
3272         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3273         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3274
3275                 /* temporarily disable queue cause for NAPI processing */
3276                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3277                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3278                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3279
3280                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3281                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3282                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3283
3284                 if (!test_bit(__I40E_DOWN, &pf->state))
3285                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3286         }
3287
3288         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3289                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3290                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3291         }
3292
3293         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3294                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3295                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3296         }
3297
3298         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3299                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3300                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3301         }
3302
3303         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3304                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3305                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3306                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3307                 val = rd32(hw, I40E_GLGEN_RSTAT);
3308                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3309                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3310                 if (val == I40E_RESET_CORER) {
3311                         pf->corer_count++;
3312                 } else if (val == I40E_RESET_GLOBR) {
3313                         pf->globr_count++;
3314                 } else if (val == I40E_RESET_EMPR) {
3315                         pf->empr_count++;
3316                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3317                 }
3318         }
3319
3320         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3321                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3322                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3323                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3324                          rd32(hw, I40E_PFHMC_ERRORINFO),
3325                          rd32(hw, I40E_PFHMC_ERRORDATA));
3326         }
3327
3328         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3329                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3330
3331                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3332                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3333                         i40e_ptp_tx_hwtstamp(pf);
3334                 }
3335         }
3336
3337         /* If a critical error is pending we have no choice but to reset the
3338          * device.
3339          * Report and mask out any remaining unexpected interrupts.
3340          */
3341         icr0_remaining = icr0 & ena_mask;
3342         if (icr0_remaining) {
3343                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3344                          icr0_remaining);
3345                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3346                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3347                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3348                         dev_info(&pf->pdev->dev, "device will be reset\n");
3349                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3350                         i40e_service_event_schedule(pf);
3351                 }
3352                 ena_mask &= ~icr0_remaining;
3353         }
3354         ret = IRQ_HANDLED;
3355
3356 enable_intr:
3357         /* re-enable interrupt causes */
3358         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3359         if (!test_bit(__I40E_DOWN, &pf->state)) {
3360                 i40e_service_event_schedule(pf);
3361                 i40e_irq_dynamic_enable_icr0(pf);
3362         }
3363
3364         return ret;
3365 }
3366
3367 /**
3368  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3369  * @tx_ring:  tx ring to clean
3370  * @budget:   how many cleans we're allowed
3371  *
3372  * Returns true if there's any budget left (e.g. the clean is finished)
3373  **/
3374 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3375 {
3376         struct i40e_vsi *vsi = tx_ring->vsi;
3377         u16 i = tx_ring->next_to_clean;
3378         struct i40e_tx_buffer *tx_buf;
3379         struct i40e_tx_desc *tx_desc;
3380
3381         tx_buf = &tx_ring->tx_bi[i];
3382         tx_desc = I40E_TX_DESC(tx_ring, i);
3383         i -= tx_ring->count;
3384
3385         do {
3386                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3387
3388                 /* if next_to_watch is not set then there is no work pending */
3389                 if (!eop_desc)
3390                         break;
3391
3392                 /* prevent any other reads prior to eop_desc */
3393                 read_barrier_depends();
3394
3395                 /* if the descriptor isn't done, no work yet to do */
3396                 if (!(eop_desc->cmd_type_offset_bsz &
3397                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3398                         break;
3399
3400                 /* clear next_to_watch to prevent false hangs */
3401                 tx_buf->next_to_watch = NULL;
3402
3403                 tx_desc->buffer_addr = 0;
3404                 tx_desc->cmd_type_offset_bsz = 0;
3405                 /* move past filter desc */
3406                 tx_buf++;
3407                 tx_desc++;
3408                 i++;
3409                 if (unlikely(!i)) {
3410                         i -= tx_ring->count;
3411                         tx_buf = tx_ring->tx_bi;
3412                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3413                 }
3414                 /* unmap skb header data */
3415                 dma_unmap_single(tx_ring->dev,
3416                                  dma_unmap_addr(tx_buf, dma),
3417                                  dma_unmap_len(tx_buf, len),
3418                                  DMA_TO_DEVICE);
3419                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3420                         kfree(tx_buf->raw_buf);
3421
3422                 tx_buf->raw_buf = NULL;
3423                 tx_buf->tx_flags = 0;
3424                 tx_buf->next_to_watch = NULL;
3425                 dma_unmap_len_set(tx_buf, len, 0);
3426                 tx_desc->buffer_addr = 0;
3427                 tx_desc->cmd_type_offset_bsz = 0;
3428
3429                 /* move us past the eop_desc for start of next FD desc */
3430                 tx_buf++;
3431                 tx_desc++;
3432                 i++;
3433                 if (unlikely(!i)) {
3434                         i -= tx_ring->count;
3435                         tx_buf = tx_ring->tx_bi;
3436                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3437                 }
3438
3439                 /* update budget accounting */
3440                 budget--;
3441         } while (likely(budget));
3442
3443         i += tx_ring->count;
3444         tx_ring->next_to_clean = i;
3445
3446         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3447                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3448         }
3449         return budget > 0;
3450 }
3451
3452 /**
3453  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3454  * @irq: interrupt number
3455  * @data: pointer to a q_vector
3456  **/
3457 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3458 {
3459         struct i40e_q_vector *q_vector = data;
3460         struct i40e_vsi *vsi;
3461
3462         if (!q_vector->tx.ring)
3463                 return IRQ_HANDLED;
3464
3465         vsi = q_vector->tx.ring->vsi;
3466         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3467
3468         return IRQ_HANDLED;
3469 }
3470
3471 /**
3472  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3473  * @vsi: the VSI being configured
3474  * @v_idx: vector index
3475  * @qp_idx: queue pair index
3476  **/
3477 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3478 {
3479         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3480         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3481         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3482
3483         tx_ring->q_vector = q_vector;
3484         tx_ring->next = q_vector->tx.ring;
3485         q_vector->tx.ring = tx_ring;
3486         q_vector->tx.count++;
3487
3488         rx_ring->q_vector = q_vector;
3489         rx_ring->next = q_vector->rx.ring;
3490         q_vector->rx.ring = rx_ring;
3491         q_vector->rx.count++;
3492 }
3493
3494 /**
3495  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3496  * @vsi: the VSI being configured
3497  *
3498  * This function maps descriptor rings to the queue-specific vectors
3499  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3500  * one vector per queue pair, but on a constrained vector budget, we
3501  * group the queue pairs as "efficiently" as possible.
3502  **/
3503 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3504 {
3505         int qp_remaining = vsi->num_queue_pairs;
3506         int q_vectors = vsi->num_q_vectors;
3507         int num_ringpairs;
3508         int v_start = 0;
3509         int qp_idx = 0;
3510
3511         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3512          * group them so there are multiple queues per vector.
3513          * It is also important to go through all the vectors available to be
3514          * sure that if we don't use all the vectors, that the remaining vectors
3515          * are cleared. This is especially important when decreasing the
3516          * number of queues in use.
3517          */
3518         for (; v_start < q_vectors; v_start++) {
3519                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3520
3521                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3522
3523                 q_vector->num_ringpairs = num_ringpairs;
3524
3525                 q_vector->rx.count = 0;
3526                 q_vector->tx.count = 0;
3527                 q_vector->rx.ring = NULL;
3528                 q_vector->tx.ring = NULL;
3529
3530                 while (num_ringpairs--) {
3531                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3532                         qp_idx++;
3533                         qp_remaining--;
3534                 }
3535         }
3536 }
3537
3538 /**
3539  * i40e_vsi_request_irq - Request IRQ from the OS
3540  * @vsi: the VSI being configured
3541  * @basename: name for the vector
3542  **/
3543 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3544 {
3545         struct i40e_pf *pf = vsi->back;
3546         int err;
3547
3548         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3549                 err = i40e_vsi_request_irq_msix(vsi, basename);
3550         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3551                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3552                                   pf->int_name, pf);
3553         else
3554                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3555                                   pf->int_name, pf);
3556
3557         if (err)
3558                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3559
3560         return err;
3561 }
3562
3563 #ifdef CONFIG_NET_POLL_CONTROLLER
3564 /**
3565  * i40e_netpoll - A Polling 'interrupt'handler
3566  * @netdev: network interface device structure
3567  *
3568  * This is used by netconsole to send skbs without having to re-enable
3569  * interrupts.  It's not called while the normal interrupt routine is executing.
3570  **/
3571 #ifdef I40E_FCOE
3572 void i40e_netpoll(struct net_device *netdev)
3573 #else
3574 static void i40e_netpoll(struct net_device *netdev)
3575 #endif
3576 {
3577         struct i40e_netdev_priv *np = netdev_priv(netdev);
3578         struct i40e_vsi *vsi = np->vsi;
3579         struct i40e_pf *pf = vsi->back;
3580         int i;
3581
3582         /* if interface is down do nothing */
3583         if (test_bit(__I40E_DOWN, &vsi->state))
3584                 return;
3585
3586         pf->flags |= I40E_FLAG_IN_NETPOLL;
3587         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3588                 for (i = 0; i < vsi->num_q_vectors; i++)
3589                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3590         } else {
3591                 i40e_intr(pf->pdev->irq, netdev);
3592         }
3593         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3594 }
3595 #endif
3596
3597 /**
3598  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3599  * @pf: the PF being configured
3600  * @pf_q: the PF queue
3601  * @enable: enable or disable state of the queue
3602  *
3603  * This routine will wait for the given Tx queue of the PF to reach the
3604  * enabled or disabled state.
3605  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3606  * multiple retries; else will return 0 in case of success.
3607  **/
3608 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3609 {
3610         int i;
3611         u32 tx_reg;
3612
3613         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3614                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3615                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3616                         break;
3617
3618                 usleep_range(10, 20);
3619         }
3620         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3621                 return -ETIMEDOUT;
3622
3623         return 0;
3624 }
3625
3626 /**
3627  * i40e_vsi_control_tx - Start or stop a VSI's rings
3628  * @vsi: the VSI being configured
3629  * @enable: start or stop the rings
3630  **/
3631 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3632 {
3633         struct i40e_pf *pf = vsi->back;
3634         struct i40e_hw *hw = &pf->hw;
3635         int i, j, pf_q, ret = 0;
3636         u32 tx_reg;
3637
3638         pf_q = vsi->base_queue;
3639         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3640
3641                 /* warn the TX unit of coming changes */
3642                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3643                 if (!enable)
3644                         usleep_range(10, 20);
3645
3646                 for (j = 0; j < 50; j++) {
3647                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3648                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3649                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3650                                 break;
3651                         usleep_range(1000, 2000);
3652                 }
3653                 /* Skip if the queue is already in the requested state */
3654                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3655                         continue;
3656
3657                 /* turn on/off the queue */
3658                 if (enable) {
3659                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3660                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3661                 } else {
3662                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3663                 }
3664
3665                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3666                 /* No waiting for the Tx queue to disable */
3667                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3668                         continue;
3669
3670                 /* wait for the change to finish */
3671                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3672                 if (ret) {
3673                         dev_info(&pf->pdev->dev,
3674                                  "VSI seid %d Tx ring %d %sable timeout\n",
3675                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3676                         break;
3677                 }
3678         }
3679
3680         if (hw->revision_id == 0)
3681                 mdelay(50);
3682         return ret;
3683 }
3684
3685 /**
3686  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3687  * @pf: the PF being configured
3688  * @pf_q: the PF queue
3689  * @enable: enable or disable state of the queue
3690  *
3691  * This routine will wait for the given Rx queue of the PF to reach the
3692  * enabled or disabled state.
3693  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3694  * multiple retries; else will return 0 in case of success.
3695  **/
3696 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3697 {
3698         int i;
3699         u32 rx_reg;
3700
3701         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3702                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3703                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3704                         break;
3705
3706                 usleep_range(10, 20);
3707         }
3708         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3709                 return -ETIMEDOUT;
3710
3711         return 0;
3712 }
3713
3714 /**
3715  * i40e_vsi_control_rx - Start or stop a VSI's rings
3716  * @vsi: the VSI being configured
3717  * @enable: start or stop the rings
3718  **/
3719 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3720 {
3721         struct i40e_pf *pf = vsi->back;
3722         struct i40e_hw *hw = &pf->hw;
3723         int i, j, pf_q, ret = 0;
3724         u32 rx_reg;
3725
3726         pf_q = vsi->base_queue;
3727         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3728                 for (j = 0; j < 50; j++) {
3729                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3730                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3731                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3732                                 break;
3733                         usleep_range(1000, 2000);
3734                 }
3735
3736                 /* Skip if the queue is already in the requested state */
3737                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3738                         continue;
3739
3740                 /* turn on/off the queue */
3741                 if (enable)
3742                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3743                 else
3744                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3745                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3746
3747                 /* wait for the change to finish */
3748                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3749                 if (ret) {
3750                         dev_info(&pf->pdev->dev,
3751                                  "VSI seid %d Rx ring %d %sable timeout\n",
3752                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3753                         break;
3754                 }
3755         }
3756
3757         return ret;
3758 }
3759
3760 /**
3761  * i40e_vsi_control_rings - Start or stop a VSI's rings
3762  * @vsi: the VSI being configured
3763  * @enable: start or stop the rings
3764  **/
3765 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3766 {
3767         int ret = 0;
3768
3769         /* do rx first for enable and last for disable */
3770         if (request) {
3771                 ret = i40e_vsi_control_rx(vsi, request);
3772                 if (ret)
3773                         return ret;
3774                 ret = i40e_vsi_control_tx(vsi, request);
3775         } else {
3776                 /* Ignore return value, we need to shutdown whatever we can */
3777                 i40e_vsi_control_tx(vsi, request);
3778                 i40e_vsi_control_rx(vsi, request);
3779         }
3780
3781         return ret;
3782 }
3783
3784 /**
3785  * i40e_vsi_free_irq - Free the irq association with the OS
3786  * @vsi: the VSI being configured
3787  **/
3788 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3789 {
3790         struct i40e_pf *pf = vsi->back;
3791         struct i40e_hw *hw = &pf->hw;
3792         int base = vsi->base_vector;
3793         u32 val, qp;
3794         int i;
3795
3796         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3797                 if (!vsi->q_vectors)
3798                         return;
3799
3800                 if (!vsi->irqs_ready)
3801                         return;
3802
3803                 vsi->irqs_ready = false;
3804                 for (i = 0; i < vsi->num_q_vectors; i++) {
3805                         u16 vector = i + base;
3806
3807                         /* free only the irqs that were actually requested */
3808                         if (!vsi->q_vectors[i] ||
3809                             !vsi->q_vectors[i]->num_ringpairs)
3810                                 continue;
3811
3812                         /* clear the affinity_mask in the IRQ descriptor */
3813                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3814                                               NULL);
3815                         free_irq(pf->msix_entries[vector].vector,
3816                                  vsi->q_vectors[i]);
3817
3818                         /* Tear down the interrupt queue link list
3819                          *
3820                          * We know that they come in pairs and always
3821                          * the Rx first, then the Tx.  To clear the
3822                          * link list, stick the EOL value into the
3823                          * next_q field of the registers.
3824                          */
3825                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3826                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3827                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3828                         val |= I40E_QUEUE_END_OF_LIST
3829                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3830                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3831
3832                         while (qp != I40E_QUEUE_END_OF_LIST) {
3833                                 u32 next;
3834
3835                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3836
3837                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3838                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3839                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3840                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3841
3842                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3843                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3844
3845                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3846
3847                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3848
3849                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3850                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3851
3852                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3853                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3854                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3855                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3856
3857                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3858                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3859
3860                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3861                                 qp = next;
3862                         }
3863                 }
3864         } else {
3865                 free_irq(pf->pdev->irq, pf);
3866
3867                 val = rd32(hw, I40E_PFINT_LNKLST0);
3868                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3869                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3870                 val |= I40E_QUEUE_END_OF_LIST
3871                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3872                 wr32(hw, I40E_PFINT_LNKLST0, val);
3873
3874                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3875                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3876                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3877                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3878                          I40E_QINT_RQCTL_INTEVENT_MASK);
3879
3880                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3881                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3882
3883                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3884
3885                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3886
3887                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3888                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3889                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3890                          I40E_QINT_TQCTL_INTEVENT_MASK);
3891
3892                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3893                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3894
3895                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3896         }
3897 }
3898
3899 /**
3900  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3901  * @vsi: the VSI being configured
3902  * @v_idx: Index of vector to be freed
3903  *
3904  * This function frees the memory allocated to the q_vector.  In addition if
3905  * NAPI is enabled it will delete any references to the NAPI struct prior
3906  * to freeing the q_vector.
3907  **/
3908 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3909 {
3910         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3911         struct i40e_ring *ring;
3912
3913         if (!q_vector)
3914                 return;
3915
3916         /* disassociate q_vector from rings */
3917         i40e_for_each_ring(ring, q_vector->tx)
3918                 ring->q_vector = NULL;
3919
3920         i40e_for_each_ring(ring, q_vector->rx)
3921                 ring->q_vector = NULL;
3922
3923         /* only VSI w/ an associated netdev is set up w/ NAPI */
3924         if (vsi->netdev)
3925                 netif_napi_del(&q_vector->napi);
3926
3927         vsi->q_vectors[v_idx] = NULL;
3928
3929         kfree_rcu(q_vector, rcu);
3930 }
3931
3932 /**
3933  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3934  * @vsi: the VSI being un-configured
3935  *
3936  * This frees the memory allocated to the q_vectors and
3937  * deletes references to the NAPI struct.
3938  **/
3939 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3940 {
3941         int v_idx;
3942
3943         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3944                 i40e_free_q_vector(vsi, v_idx);
3945 }
3946
3947 /**
3948  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3949  * @pf: board private structure
3950  **/
3951 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3952 {
3953         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3954         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3955                 pci_disable_msix(pf->pdev);
3956                 kfree(pf->msix_entries);
3957                 pf->msix_entries = NULL;
3958                 kfree(pf->irq_pile);
3959                 pf->irq_pile = NULL;
3960         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3961                 pci_disable_msi(pf->pdev);
3962         }
3963         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3964 }
3965
3966 /**
3967  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3968  * @pf: board private structure
3969  *
3970  * We go through and clear interrupt specific resources and reset the structure
3971  * to pre-load conditions
3972  **/
3973 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3974 {
3975         int i;
3976
3977         i40e_stop_misc_vector(pf);
3978         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3979                 synchronize_irq(pf->msix_entries[0].vector);
3980                 free_irq(pf->msix_entries[0].vector, pf);
3981         }
3982
3983         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3984         for (i = 0; i < pf->num_alloc_vsi; i++)
3985                 if (pf->vsi[i])
3986                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3987         i40e_reset_interrupt_capability(pf);
3988 }
3989
3990 /**
3991  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3992  * @vsi: the VSI being configured
3993  **/
3994 static void i40e_napi_enable_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_enable(&vsi->q_vectors[q_idx]->napi);
4003 }
4004
4005 /**
4006  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4007  * @vsi: the VSI being configured
4008  **/
4009 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4010 {
4011         int q_idx;
4012
4013         if (!vsi->netdev)
4014                 return;
4015
4016         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4017                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4018 }
4019
4020 /**
4021  * i40e_vsi_close - Shut down a VSI
4022  * @vsi: the vsi to be quelled
4023  **/
4024 static void i40e_vsi_close(struct i40e_vsi *vsi)
4025 {
4026         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4027                 i40e_down(vsi);
4028         i40e_vsi_free_irq(vsi);
4029         i40e_vsi_free_tx_resources(vsi);
4030         i40e_vsi_free_rx_resources(vsi);
4031         vsi->current_netdev_flags = 0;
4032 }
4033
4034 /**
4035  * i40e_quiesce_vsi - Pause a given VSI
4036  * @vsi: the VSI being paused
4037  **/
4038 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4039 {
4040         if (test_bit(__I40E_DOWN, &vsi->state))
4041                 return;
4042
4043         /* No need to disable FCoE VSI when Tx suspended */
4044         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4045             vsi->type == I40E_VSI_FCOE) {
4046                 dev_dbg(&vsi->back->pdev->dev,
4047                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4048                 return;
4049         }
4050
4051         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4052         if (vsi->netdev && netif_running(vsi->netdev)) {
4053                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4054         } else {
4055                 i40e_vsi_close(vsi);
4056         }
4057 }
4058
4059 /**
4060  * i40e_unquiesce_vsi - Resume a given VSI
4061  * @vsi: the VSI being resumed
4062  **/
4063 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4064 {
4065         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4066                 return;
4067
4068         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4069         if (vsi->netdev && netif_running(vsi->netdev))
4070                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4071         else
4072                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4073 }
4074
4075 /**
4076  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4077  * @pf: the PF
4078  **/
4079 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4080 {
4081         int v;
4082
4083         for (v = 0; v < pf->num_alloc_vsi; v++) {
4084                 if (pf->vsi[v])
4085                         i40e_quiesce_vsi(pf->vsi[v]);
4086         }
4087 }
4088
4089 /**
4090  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4091  * @pf: the PF
4092  **/
4093 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4094 {
4095         int v;
4096
4097         for (v = 0; v < pf->num_alloc_vsi; v++) {
4098                 if (pf->vsi[v])
4099                         i40e_unquiesce_vsi(pf->vsi[v]);
4100         }
4101 }
4102
4103 #ifdef CONFIG_I40E_DCB
4104 /**
4105  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4106  * @vsi: the VSI being configured
4107  *
4108  * This function waits for the given VSI's Tx queues to be disabled.
4109  **/
4110 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4111 {
4112         struct i40e_pf *pf = vsi->back;
4113         int i, pf_q, ret;
4114
4115         pf_q = vsi->base_queue;
4116         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4117                 /* Check and wait for the disable status of the queue */
4118                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4119                 if (ret) {
4120                         dev_info(&pf->pdev->dev,
4121                                  "VSI seid %d Tx ring %d disable timeout\n",
4122                                  vsi->seid, pf_q);
4123                         return ret;
4124                 }
4125         }
4126
4127         return 0;
4128 }
4129
4130 /**
4131  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4132  * @pf: the PF
4133  *
4134  * This function waits for the Tx queues to be in disabled state for all the
4135  * VSIs that are managed by this PF.
4136  **/
4137 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4138 {
4139         int v, ret = 0;
4140
4141         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4142                 /* No need to wait for FCoE VSI queues */
4143                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4144                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4145                         if (ret)
4146                                 break;
4147                 }
4148         }
4149
4150         return ret;
4151 }
4152
4153 #endif
4154
4155 /**
4156  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4157  * @q_idx: TX queue number
4158  * @vsi: Pointer to VSI struct
4159  *
4160  * This function checks specified queue for given VSI. Detects hung condition.
4161  * Sets hung bit since it is two step process. Before next run of service task
4162  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4163  * hung condition remain unchanged and during subsequent run, this function
4164  * issues SW interrupt to recover from hung condition.
4165  **/
4166 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4167 {
4168         struct i40e_ring *tx_ring = NULL;
4169         struct i40e_pf  *pf;
4170         u32 head, val, tx_pending;
4171         int i;
4172
4173         pf = vsi->back;
4174
4175         /* now that we have an index, find the tx_ring struct */
4176         for (i = 0; i < vsi->num_queue_pairs; i++) {
4177                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4178                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4179                                 tx_ring = vsi->tx_rings[i];
4180                                 break;
4181                         }
4182                 }
4183         }
4184
4185         if (!tx_ring)
4186                 return;
4187
4188         /* Read interrupt register */
4189         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4190                 val = rd32(&pf->hw,
4191                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4192                                                tx_ring->vsi->base_vector - 1));
4193         else
4194                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4195
4196         head = i40e_get_head(tx_ring);
4197
4198         tx_pending = i40e_get_tx_pending(tx_ring);
4199
4200         /* Interrupts are disabled and TX pending is non-zero,
4201          * trigger the SW interrupt (don't wait). Worst case
4202          * there will be one extra interrupt which may result
4203          * into not cleaning any queues because queues are cleaned.
4204          */
4205         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4206                 i40e_force_wb(vsi, tx_ring->q_vector);
4207 }
4208
4209 /**
4210  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4211  * @pf:  pointer to PF struct
4212  *
4213  * LAN VSI has netdev and netdev has TX queues. This function is to check
4214  * each of those TX queues if they are hung, trigger recovery by issuing
4215  * SW interrupt.
4216  **/
4217 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4218 {
4219         struct net_device *netdev;
4220         struct i40e_vsi *vsi;
4221         int i;
4222
4223         /* Only for LAN VSI */
4224         vsi = pf->vsi[pf->lan_vsi];
4225
4226         if (!vsi)
4227                 return;
4228
4229         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4230         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4231             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4232                 return;
4233
4234         /* Make sure type is MAIN VSI */
4235         if (vsi->type != I40E_VSI_MAIN)
4236                 return;
4237
4238         netdev = vsi->netdev;
4239         if (!netdev)
4240                 return;
4241
4242         /* Bail out if netif_carrier is not OK */
4243         if (!netif_carrier_ok(netdev))
4244                 return;
4245
4246         /* Go thru' TX queues for netdev */
4247         for (i = 0; i < netdev->num_tx_queues; i++) {
4248                 struct netdev_queue *q;
4249
4250                 q = netdev_get_tx_queue(netdev, i);
4251                 if (q)
4252                         i40e_detect_recover_hung_queue(i, vsi);
4253         }
4254 }
4255
4256 /**
4257  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4258  * @pf: pointer to PF
4259  *
4260  * Get TC map for ISCSI PF type that will include iSCSI TC
4261  * and LAN TC.
4262  **/
4263 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4264 {
4265         struct i40e_dcb_app_priority_table app;
4266         struct i40e_hw *hw = &pf->hw;
4267         u8 enabled_tc = 1; /* TC0 is always enabled */
4268         u8 tc, i;
4269         /* Get the iSCSI APP TLV */
4270         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4271
4272         for (i = 0; i < dcbcfg->numapps; i++) {
4273                 app = dcbcfg->app[i];
4274                 if (app.selector == I40E_APP_SEL_TCPIP &&
4275                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4276                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4277                         enabled_tc |= BIT_ULL(tc);
4278                         break;
4279                 }
4280         }
4281
4282         return enabled_tc;
4283 }
4284
4285 /**
4286  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4287  * @dcbcfg: the corresponding DCBx configuration structure
4288  *
4289  * Return the number of TCs from given DCBx configuration
4290  **/
4291 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4292 {
4293         u8 num_tc = 0;
4294         int i;
4295
4296         /* Scan the ETS Config Priority Table to find
4297          * traffic class enabled for a given priority
4298          * and use the traffic class index to get the
4299          * number of traffic classes enabled
4300          */
4301         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4302                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4303                         num_tc = dcbcfg->etscfg.prioritytable[i];
4304         }
4305
4306         /* Traffic class index starts from zero so
4307          * increment to return the actual count
4308          */
4309         return num_tc + 1;
4310 }
4311
4312 /**
4313  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4314  * @dcbcfg: the corresponding DCBx configuration structure
4315  *
4316  * Query the current DCB configuration and return the number of
4317  * traffic classes enabled from the given DCBX config
4318  **/
4319 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4320 {
4321         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4322         u8 enabled_tc = 1;
4323         u8 i;
4324
4325         for (i = 0; i < num_tc; i++)
4326                 enabled_tc |= BIT(i);
4327
4328         return enabled_tc;
4329 }
4330
4331 /**
4332  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4333  * @pf: PF being queried
4334  *
4335  * Return number of traffic classes enabled for the given PF
4336  **/
4337 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4338 {
4339         struct i40e_hw *hw = &pf->hw;
4340         u8 i, enabled_tc;
4341         u8 num_tc = 0;
4342         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4343
4344         /* If DCB is not enabled then always in single TC */
4345         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4346                 return 1;
4347
4348         /* SFP mode will be enabled for all TCs on port */
4349         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4350                 return i40e_dcb_get_num_tc(dcbcfg);
4351
4352         /* MFP mode return count of enabled TCs for this PF */
4353         if (pf->hw.func_caps.iscsi)
4354                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4355         else
4356                 return 1; /* Only TC0 */
4357
4358         /* At least have TC0 */
4359         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4360         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4361                 if (enabled_tc & BIT_ULL(i))
4362                         num_tc++;
4363         }
4364         return num_tc;
4365 }
4366
4367 /**
4368  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4369  * @pf: PF being queried
4370  *
4371  * Return a bitmap for first enabled traffic class for this PF.
4372  **/
4373 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4374 {
4375         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4376         u8 i = 0;
4377
4378         if (!enabled_tc)
4379                 return 0x1; /* TC0 */
4380
4381         /* Find the first enabled TC */
4382         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4383                 if (enabled_tc & BIT_ULL(i))
4384                         break;
4385         }
4386
4387         return BIT(i);
4388 }
4389
4390 /**
4391  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4392  * @pf: PF being queried
4393  *
4394  * Return a bitmap for enabled traffic classes for this PF.
4395  **/
4396 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4397 {
4398         /* If DCB is not enabled for this PF then just return default TC */
4399         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4400                 return i40e_pf_get_default_tc(pf);
4401
4402         /* SFP mode we want PF to be enabled for all TCs */
4403         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4404                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4405
4406         /* MFP enabled and iSCSI PF type */
4407         if (pf->hw.func_caps.iscsi)
4408                 return i40e_get_iscsi_tc_map(pf);
4409         else
4410                 return i40e_pf_get_default_tc(pf);
4411 }
4412
4413 /**
4414  * i40e_vsi_get_bw_info - Query VSI BW Information
4415  * @vsi: the VSI being queried
4416  *
4417  * Returns 0 on success, negative value on failure
4418  **/
4419 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4420 {
4421         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4422         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4423         struct i40e_pf *pf = vsi->back;
4424         struct i40e_hw *hw = &pf->hw;
4425         i40e_status ret;
4426         u32 tc_bw_max;
4427         int i;
4428
4429         /* Get the VSI level BW configuration */
4430         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4431         if (ret) {
4432                 dev_info(&pf->pdev->dev,
4433                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4434                          i40e_stat_str(&pf->hw, ret),
4435                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4436                 return -EINVAL;
4437         }
4438
4439         /* Get the VSI level BW configuration per TC */
4440         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4441                                                NULL);
4442         if (ret) {
4443                 dev_info(&pf->pdev->dev,
4444                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4445                          i40e_stat_str(&pf->hw, ret),
4446                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4447                 return -EINVAL;
4448         }
4449
4450         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4451                 dev_info(&pf->pdev->dev,
4452                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4453                          bw_config.tc_valid_bits,
4454                          bw_ets_config.tc_valid_bits);
4455                 /* Still continuing */
4456         }
4457
4458         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4459         vsi->bw_max_quanta = bw_config.max_bw;
4460         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4461                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4462         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4463                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4464                 vsi->bw_ets_limit_credits[i] =
4465                                         le16_to_cpu(bw_ets_config.credits[i]);
4466                 /* 3 bits out of 4 for each TC */
4467                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4468         }
4469
4470         return 0;
4471 }
4472
4473 /**
4474  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4475  * @vsi: the VSI being configured
4476  * @enabled_tc: TC bitmap
4477  * @bw_credits: BW shared credits per TC
4478  *
4479  * Returns 0 on success, negative value on failure
4480  **/
4481 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4482                                        u8 *bw_share)
4483 {
4484         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4485         i40e_status ret;
4486         int i;
4487
4488         bw_data.tc_valid_bits = enabled_tc;
4489         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4490                 bw_data.tc_bw_credits[i] = bw_share[i];
4491
4492         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4493                                        NULL);
4494         if (ret) {
4495                 dev_info(&vsi->back->pdev->dev,
4496                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4497                          vsi->back->hw.aq.asq_last_status);
4498                 return -EINVAL;
4499         }
4500
4501         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4502                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4503
4504         return 0;
4505 }
4506
4507 /**
4508  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4509  * @vsi: the VSI being configured
4510  * @enabled_tc: TC map to be enabled
4511  *
4512  **/
4513 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4514 {
4515         struct net_device *netdev = vsi->netdev;
4516         struct i40e_pf *pf = vsi->back;
4517         struct i40e_hw *hw = &pf->hw;
4518         u8 netdev_tc = 0;
4519         int i;
4520         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4521
4522         if (!netdev)
4523                 return;
4524
4525         if (!enabled_tc) {
4526                 netdev_reset_tc(netdev);
4527                 return;
4528         }
4529
4530         /* Set up actual enabled TCs on the VSI */
4531         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4532                 return;
4533
4534         /* set per TC queues for the VSI */
4535         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4536                 /* Only set TC queues for enabled tcs
4537                  *
4538                  * e.g. For a VSI that has TC0 and TC3 enabled the
4539                  * enabled_tc bitmap would be 0x00001001; the driver
4540                  * will set the numtc for netdev as 2 that will be
4541                  * referenced by the netdev layer as TC 0 and 1.
4542                  */
4543                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4544                         netdev_set_tc_queue(netdev,
4545                                         vsi->tc_config.tc_info[i].netdev_tc,
4546                                         vsi->tc_config.tc_info[i].qcount,
4547                                         vsi->tc_config.tc_info[i].qoffset);
4548         }
4549
4550         /* Assign UP2TC map for the VSI */
4551         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4552                 /* Get the actual TC# for the UP */
4553                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4554                 /* Get the mapped netdev TC# for the UP */
4555                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4556                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4557         }
4558 }
4559
4560 /**
4561  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4562  * @vsi: the VSI being configured
4563  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4564  **/
4565 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4566                                       struct i40e_vsi_context *ctxt)
4567 {
4568         /* copy just the sections touched not the entire info
4569          * since not all sections are valid as returned by
4570          * update vsi params
4571          */
4572         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4573         memcpy(&vsi->info.queue_mapping,
4574                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4575         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4576                sizeof(vsi->info.tc_mapping));
4577 }
4578
4579 /**
4580  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4581  * @vsi: VSI to be configured
4582  * @enabled_tc: TC bitmap
4583  *
4584  * This configures a particular VSI for TCs that are mapped to the
4585  * given TC bitmap. It uses default bandwidth share for TCs across
4586  * VSIs to configure TC for a particular VSI.
4587  *
4588  * NOTE:
4589  * It is expected that the VSI queues have been quisced before calling
4590  * this function.
4591  **/
4592 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4593 {
4594         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4595         struct i40e_vsi_context ctxt;
4596         int ret = 0;
4597         int i;
4598
4599         /* Check if enabled_tc is same as existing or new TCs */
4600         if (vsi->tc_config.enabled_tc == enabled_tc)
4601                 return ret;
4602
4603         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4604         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4605                 if (enabled_tc & BIT_ULL(i))
4606                         bw_share[i] = 1;
4607         }
4608
4609         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4610         if (ret) {
4611                 dev_info(&vsi->back->pdev->dev,
4612                          "Failed configuring TC map %d for VSI %d\n",
4613                          enabled_tc, vsi->seid);
4614                 goto out;
4615         }
4616
4617         /* Update Queue Pairs Mapping for currently enabled UPs */
4618         ctxt.seid = vsi->seid;
4619         ctxt.pf_num = vsi->back->hw.pf_id;
4620         ctxt.vf_num = 0;
4621         ctxt.uplink_seid = vsi->uplink_seid;
4622         ctxt.info = vsi->info;
4623         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4624
4625         /* Update the VSI after updating the VSI queue-mapping information */
4626         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4627         if (ret) {
4628                 dev_info(&vsi->back->pdev->dev,
4629                          "Update vsi tc config failed, err %s aq_err %s\n",
4630                          i40e_stat_str(&vsi->back->hw, ret),
4631                          i40e_aq_str(&vsi->back->hw,
4632                                      vsi->back->hw.aq.asq_last_status));
4633                 goto out;
4634         }
4635         /* update the local VSI info with updated queue map */
4636         i40e_vsi_update_queue_map(vsi, &ctxt);
4637         vsi->info.valid_sections = 0;
4638
4639         /* Update current VSI BW information */
4640         ret = i40e_vsi_get_bw_info(vsi);
4641         if (ret) {
4642                 dev_info(&vsi->back->pdev->dev,
4643                          "Failed updating vsi bw info, err %s aq_err %s\n",
4644                          i40e_stat_str(&vsi->back->hw, ret),
4645                          i40e_aq_str(&vsi->back->hw,
4646                                      vsi->back->hw.aq.asq_last_status));
4647                 goto out;
4648         }
4649
4650         /* Update the netdev TC setup */
4651         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4652 out:
4653         return ret;
4654 }
4655
4656 /**
4657  * i40e_veb_config_tc - Configure TCs for given VEB
4658  * @veb: given VEB
4659  * @enabled_tc: TC bitmap
4660  *
4661  * Configures given TC bitmap for VEB (switching) element
4662  **/
4663 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4664 {
4665         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4666         struct i40e_pf *pf = veb->pf;
4667         int ret = 0;
4668         int i;
4669
4670         /* No TCs or already enabled TCs just return */
4671         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4672                 return ret;
4673
4674         bw_data.tc_valid_bits = enabled_tc;
4675         /* bw_data.absolute_credits is not set (relative) */
4676
4677         /* Enable ETS TCs with equal BW Share for now */
4678         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4679                 if (enabled_tc & BIT_ULL(i))
4680                         bw_data.tc_bw_share_credits[i] = 1;
4681         }
4682
4683         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4684                                                    &bw_data, NULL);
4685         if (ret) {
4686                 dev_info(&pf->pdev->dev,
4687                          "VEB bw config failed, err %s aq_err %s\n",
4688                          i40e_stat_str(&pf->hw, ret),
4689                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4690                 goto out;
4691         }
4692
4693         /* Update the BW information */
4694         ret = i40e_veb_get_bw_info(veb);
4695         if (ret) {
4696                 dev_info(&pf->pdev->dev,
4697                          "Failed getting veb bw config, err %s aq_err %s\n",
4698                          i40e_stat_str(&pf->hw, ret),
4699                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4700         }
4701
4702 out:
4703         return ret;
4704 }
4705
4706 #ifdef CONFIG_I40E_DCB
4707 /**
4708  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4709  * @pf: PF struct
4710  *
4711  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4712  * the caller would've quiesce all the VSIs before calling
4713  * this function
4714  **/
4715 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4716 {
4717         u8 tc_map = 0;
4718         int ret;
4719         u8 v;
4720
4721         /* Enable the TCs available on PF to all VEBs */
4722         tc_map = i40e_pf_get_tc_map(pf);
4723         for (v = 0; v < I40E_MAX_VEB; v++) {
4724                 if (!pf->veb[v])
4725                         continue;
4726                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4727                 if (ret) {
4728                         dev_info(&pf->pdev->dev,
4729                                  "Failed configuring TC for VEB seid=%d\n",
4730                                  pf->veb[v]->seid);
4731                         /* Will try to configure as many components */
4732                 }
4733         }
4734
4735         /* Update each VSI */
4736         for (v = 0; v < pf->num_alloc_vsi; v++) {
4737                 if (!pf->vsi[v])
4738                         continue;
4739
4740                 /* - Enable all TCs for the LAN VSI
4741 #ifdef I40E_FCOE
4742                  * - For FCoE VSI only enable the TC configured
4743                  *   as per the APP TLV
4744 #endif
4745                  * - For all others keep them at TC0 for now
4746                  */
4747                 if (v == pf->lan_vsi)
4748                         tc_map = i40e_pf_get_tc_map(pf);
4749                 else
4750                         tc_map = i40e_pf_get_default_tc(pf);
4751 #ifdef I40E_FCOE
4752                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4753                         tc_map = i40e_get_fcoe_tc_map(pf);
4754 #endif /* #ifdef I40E_FCOE */
4755
4756                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4757                 if (ret) {
4758                         dev_info(&pf->pdev->dev,
4759                                  "Failed configuring TC for VSI seid=%d\n",
4760                                  pf->vsi[v]->seid);
4761                         /* Will try to configure as many components */
4762                 } else {
4763                         /* Re-configure VSI vectors based on updated TC map */
4764                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4765                         if (pf->vsi[v]->netdev)
4766                                 i40e_dcbnl_set_all(pf->vsi[v]);
4767                 }
4768         }
4769 }
4770
4771 /**
4772  * i40e_resume_port_tx - Resume port Tx
4773  * @pf: PF struct
4774  *
4775  * Resume a port's Tx and issue a PF reset in case of failure to
4776  * resume.
4777  **/
4778 static int i40e_resume_port_tx(struct i40e_pf *pf)
4779 {
4780         struct i40e_hw *hw = &pf->hw;
4781         int ret;
4782
4783         ret = i40e_aq_resume_port_tx(hw, NULL);
4784         if (ret) {
4785                 dev_info(&pf->pdev->dev,
4786                          "Resume Port Tx failed, err %s aq_err %s\n",
4787                           i40e_stat_str(&pf->hw, ret),
4788                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4789                 /* Schedule PF reset to recover */
4790                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4791                 i40e_service_event_schedule(pf);
4792         }
4793
4794         return ret;
4795 }
4796
4797 /**
4798  * i40e_init_pf_dcb - Initialize DCB configuration
4799  * @pf: PF being configured
4800  *
4801  * Query the current DCB configuration and cache it
4802  * in the hardware structure
4803  **/
4804 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4805 {
4806         struct i40e_hw *hw = &pf->hw;
4807         int err = 0;
4808
4809         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4810         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4811             (pf->hw.aq.fw_maj_ver < 4))
4812                 goto out;
4813
4814         /* Get the initial DCB configuration */
4815         err = i40e_init_dcb(hw);
4816         if (!err) {
4817                 /* Device/Function is not DCBX capable */
4818                 if ((!hw->func_caps.dcb) ||
4819                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4820                         dev_info(&pf->pdev->dev,
4821                                  "DCBX offload is not supported or is disabled for this PF.\n");
4822
4823                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4824                                 goto out;
4825
4826                 } else {
4827                         /* When status is not DISABLED then DCBX in FW */
4828                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4829                                        DCB_CAP_DCBX_VER_IEEE;
4830
4831                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4832                         /* Enable DCB tagging only when more than one TC */
4833                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4834                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4835                         dev_dbg(&pf->pdev->dev,
4836                                 "DCBX offload is supported for this PF.\n");
4837                 }
4838         } else {
4839                 dev_info(&pf->pdev->dev,
4840                          "Query for DCB configuration failed, err %s aq_err %s\n",
4841                          i40e_stat_str(&pf->hw, err),
4842                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4843         }
4844
4845 out:
4846         return err;
4847 }
4848 #endif /* CONFIG_I40E_DCB */
4849 #define SPEED_SIZE 14
4850 #define FC_SIZE 8
4851 /**
4852  * i40e_print_link_message - print link up or down
4853  * @vsi: the VSI for which link needs a message
4854  */
4855 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4856 {
4857         char speed[SPEED_SIZE] = "Unknown";
4858         char fc[FC_SIZE] = "RX/TX";
4859
4860         if (!isup) {
4861                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4862                 return;
4863         }
4864
4865         /* Warn user if link speed on NPAR enabled partition is not at
4866          * least 10GB
4867          */
4868         if (vsi->back->hw.func_caps.npar_enable &&
4869             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4870              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4871                 netdev_warn(vsi->netdev,
4872                             "The partition detected link speed that is less than 10Gbps\n");
4873
4874         switch (vsi->back->hw.phy.link_info.link_speed) {
4875         case I40E_LINK_SPEED_40GB:
4876                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4877                 break;
4878         case I40E_LINK_SPEED_20GB:
4879                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4880                 break;
4881         case I40E_LINK_SPEED_10GB:
4882                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4883                 break;
4884         case I40E_LINK_SPEED_1GB:
4885                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4886                 break;
4887         case I40E_LINK_SPEED_100MB:
4888                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4889                 break;
4890         default:
4891                 break;
4892         }
4893
4894         switch (vsi->back->hw.fc.current_mode) {
4895         case I40E_FC_FULL:
4896                 strlcpy(fc, "RX/TX", FC_SIZE);
4897                 break;
4898         case I40E_FC_TX_PAUSE:
4899                 strlcpy(fc, "TX", FC_SIZE);
4900                 break;
4901         case I40E_FC_RX_PAUSE:
4902                 strlcpy(fc, "RX", FC_SIZE);
4903                 break;
4904         default:
4905                 strlcpy(fc, "None", FC_SIZE);
4906                 break;
4907         }
4908
4909         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4910                     speed, fc);
4911 }
4912
4913 /**
4914  * i40e_up_complete - Finish the last steps of bringing up a connection
4915  * @vsi: the VSI being configured
4916  **/
4917 static int i40e_up_complete(struct i40e_vsi *vsi)
4918 {
4919         struct i40e_pf *pf = vsi->back;
4920         int err;
4921
4922         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4923                 i40e_vsi_configure_msix(vsi);
4924         else
4925                 i40e_configure_msi_and_legacy(vsi);
4926
4927         /* start rings */
4928         err = i40e_vsi_control_rings(vsi, true);
4929         if (err)
4930                 return err;
4931
4932         clear_bit(__I40E_DOWN, &vsi->state);
4933         i40e_napi_enable_all(vsi);
4934         i40e_vsi_enable_irq(vsi);
4935
4936         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4937             (vsi->netdev)) {
4938                 i40e_print_link_message(vsi, true);
4939                 netif_tx_start_all_queues(vsi->netdev);
4940                 netif_carrier_on(vsi->netdev);
4941         } else if (vsi->netdev) {
4942                 i40e_print_link_message(vsi, false);
4943                 /* need to check for qualified module here*/
4944                 if ((pf->hw.phy.link_info.link_info &
4945                         I40E_AQ_MEDIA_AVAILABLE) &&
4946                     (!(pf->hw.phy.link_info.an_info &
4947                         I40E_AQ_QUALIFIED_MODULE)))
4948                         netdev_err(vsi->netdev,
4949                                    "the driver failed to link because an unqualified module was detected.");
4950         }
4951
4952         /* replay FDIR SB filters */
4953         if (vsi->type == I40E_VSI_FDIR) {
4954                 /* reset fd counters */
4955                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4956                 if (pf->fd_tcp_rule > 0) {
4957                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4958                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4959                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4960                         pf->fd_tcp_rule = 0;
4961                 }
4962                 i40e_fdir_filter_restore(vsi);
4963         }
4964         i40e_service_event_schedule(pf);
4965
4966         return 0;
4967 }
4968
4969 /**
4970  * i40e_vsi_reinit_locked - Reset the VSI
4971  * @vsi: the VSI being configured
4972  *
4973  * Rebuild the ring structs after some configuration
4974  * has changed, e.g. MTU size.
4975  **/
4976 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4977 {
4978         struct i40e_pf *pf = vsi->back;
4979
4980         WARN_ON(in_interrupt());
4981         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4982                 usleep_range(1000, 2000);
4983         i40e_down(vsi);
4984
4985         /* Give a VF some time to respond to the reset.  The
4986          * two second wait is based upon the watchdog cycle in
4987          * the VF driver.
4988          */
4989         if (vsi->type == I40E_VSI_SRIOV)
4990                 msleep(2000);
4991         i40e_up(vsi);
4992         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4993 }
4994
4995 /**
4996  * i40e_up - Bring the connection back up after being down
4997  * @vsi: the VSI being configured
4998  **/
4999 int i40e_up(struct i40e_vsi *vsi)
5000 {
5001         int err;
5002
5003         err = i40e_vsi_configure(vsi);
5004         if (!err)
5005                 err = i40e_up_complete(vsi);
5006
5007         return err;
5008 }
5009
5010 /**
5011  * i40e_down - Shutdown the connection processing
5012  * @vsi: the VSI being stopped
5013  **/
5014 void i40e_down(struct i40e_vsi *vsi)
5015 {
5016         int i;
5017
5018         /* It is assumed that the caller of this function
5019          * sets the vsi->state __I40E_DOWN bit.
5020          */
5021         if (vsi->netdev) {
5022                 netif_carrier_off(vsi->netdev);
5023                 netif_tx_disable(vsi->netdev);
5024         }
5025         i40e_vsi_disable_irq(vsi);
5026         i40e_vsi_control_rings(vsi, false);
5027         i40e_napi_disable_all(vsi);
5028
5029         for (i = 0; i < vsi->num_queue_pairs; i++) {
5030                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5031                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5032         }
5033 }
5034
5035 /**
5036  * i40e_setup_tc - configure multiple traffic classes
5037  * @netdev: net device to configure
5038  * @tc: number of traffic classes to enable
5039  **/
5040 #ifdef I40E_FCOE
5041 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5042 #else
5043 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5044 #endif
5045 {
5046         struct i40e_netdev_priv *np = netdev_priv(netdev);
5047         struct i40e_vsi *vsi = np->vsi;
5048         struct i40e_pf *pf = vsi->back;
5049         u8 enabled_tc = 0;
5050         int ret = -EINVAL;
5051         int i;
5052
5053         /* Check if DCB enabled to continue */
5054         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5055                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5056                 goto exit;
5057         }
5058
5059         /* Check if MFP enabled */
5060         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5061                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5062                 goto exit;
5063         }
5064
5065         /* Check whether tc count is within enabled limit */
5066         if (tc > i40e_pf_get_num_tc(pf)) {
5067                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5068                 goto exit;
5069         }
5070
5071         /* Generate TC map for number of tc requested */
5072         for (i = 0; i < tc; i++)
5073                 enabled_tc |= BIT_ULL(i);
5074
5075         /* Requesting same TC configuration as already enabled */
5076         if (enabled_tc == vsi->tc_config.enabled_tc)
5077                 return 0;
5078
5079         /* Quiesce VSI queues */
5080         i40e_quiesce_vsi(vsi);
5081
5082         /* Configure VSI for enabled TCs */
5083         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5084         if (ret) {
5085                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5086                             vsi->seid);
5087                 goto exit;
5088         }
5089
5090         /* Unquiesce VSI */
5091         i40e_unquiesce_vsi(vsi);
5092
5093 exit:
5094         return ret;
5095 }
5096
5097 /**
5098  * i40e_open - Called when a network interface is made active
5099  * @netdev: network interface device structure
5100  *
5101  * The open entry point is called when a network interface is made
5102  * active by the system (IFF_UP).  At this point all resources needed
5103  * for transmit and receive operations are allocated, the interrupt
5104  * handler is registered with the OS, the netdev watchdog subtask is
5105  * enabled, and the stack is notified that the interface is ready.
5106  *
5107  * Returns 0 on success, negative value on failure
5108  **/
5109 int i40e_open(struct net_device *netdev)
5110 {
5111         struct i40e_netdev_priv *np = netdev_priv(netdev);
5112         struct i40e_vsi *vsi = np->vsi;
5113         struct i40e_pf *pf = vsi->back;
5114         int err;
5115
5116         /* disallow open during test or if eeprom is broken */
5117         if (test_bit(__I40E_TESTING, &pf->state) ||
5118             test_bit(__I40E_BAD_EEPROM, &pf->state))
5119                 return -EBUSY;
5120
5121         netif_carrier_off(netdev);
5122
5123         err = i40e_vsi_open(vsi);
5124         if (err)
5125                 return err;
5126
5127         /* configure global TSO hardware offload settings */
5128         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5129                                                        TCP_FLAG_FIN) >> 16);
5130         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5131                                                        TCP_FLAG_FIN |
5132                                                        TCP_FLAG_CWR) >> 16);
5133         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5134
5135 #ifdef CONFIG_I40E_VXLAN
5136         vxlan_get_rx_port(netdev);
5137 #endif
5138
5139         return 0;
5140 }
5141
5142 /**
5143  * i40e_vsi_open -
5144  * @vsi: the VSI to open
5145  *
5146  * Finish initialization of the VSI.
5147  *
5148  * Returns 0 on success, negative value on failure
5149  **/
5150 int i40e_vsi_open(struct i40e_vsi *vsi)
5151 {
5152         struct i40e_pf *pf = vsi->back;
5153         char int_name[I40E_INT_NAME_STR_LEN];
5154         int err;
5155
5156         /* allocate descriptors */
5157         err = i40e_vsi_setup_tx_resources(vsi);
5158         if (err)
5159                 goto err_setup_tx;
5160         err = i40e_vsi_setup_rx_resources(vsi);
5161         if (err)
5162                 goto err_setup_rx;
5163
5164         err = i40e_vsi_configure(vsi);
5165         if (err)
5166                 goto err_setup_rx;
5167
5168         if (vsi->netdev) {
5169                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5170                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5171                 err = i40e_vsi_request_irq(vsi, int_name);
5172                 if (err)
5173                         goto err_setup_rx;
5174
5175                 /* Notify the stack of the actual queue counts. */
5176                 err = netif_set_real_num_tx_queues(vsi->netdev,
5177                                                    vsi->num_queue_pairs);
5178                 if (err)
5179                         goto err_set_queues;
5180
5181                 err = netif_set_real_num_rx_queues(vsi->netdev,
5182                                                    vsi->num_queue_pairs);
5183                 if (err)
5184                         goto err_set_queues;
5185
5186         } else if (vsi->type == I40E_VSI_FDIR) {
5187                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5188                          dev_driver_string(&pf->pdev->dev),
5189                          dev_name(&pf->pdev->dev));
5190                 err = i40e_vsi_request_irq(vsi, int_name);
5191
5192         } else {
5193                 err = -EINVAL;
5194                 goto err_setup_rx;
5195         }
5196
5197         err = i40e_up_complete(vsi);
5198         if (err)
5199                 goto err_up_complete;
5200
5201         return 0;
5202
5203 err_up_complete:
5204         i40e_down(vsi);
5205 err_set_queues:
5206         i40e_vsi_free_irq(vsi);
5207 err_setup_rx:
5208         i40e_vsi_free_rx_resources(vsi);
5209 err_setup_tx:
5210         i40e_vsi_free_tx_resources(vsi);
5211         if (vsi == pf->vsi[pf->lan_vsi])
5212                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5213
5214         return err;
5215 }
5216
5217 /**
5218  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5219  * @pf: Pointer to PF
5220  *
5221  * This function destroys the hlist where all the Flow Director
5222  * filters were saved.
5223  **/
5224 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5225 {
5226         struct i40e_fdir_filter *filter;
5227         struct hlist_node *node2;
5228
5229         hlist_for_each_entry_safe(filter, node2,
5230                                   &pf->fdir_filter_list, fdir_node) {
5231                 hlist_del(&filter->fdir_node);
5232                 kfree(filter);
5233         }
5234         pf->fdir_pf_active_filters = 0;
5235 }
5236
5237 /**
5238  * i40e_close - Disables a network interface
5239  * @netdev: network interface device structure
5240  *
5241  * The close entry point is called when an interface is de-activated
5242  * by the OS.  The hardware is still under the driver's control, but
5243  * this netdev interface is disabled.
5244  *
5245  * Returns 0, this is not allowed to fail
5246  **/
5247 #ifdef I40E_FCOE
5248 int i40e_close(struct net_device *netdev)
5249 #else
5250 static int i40e_close(struct net_device *netdev)
5251 #endif
5252 {
5253         struct i40e_netdev_priv *np = netdev_priv(netdev);
5254         struct i40e_vsi *vsi = np->vsi;
5255
5256         i40e_vsi_close(vsi);
5257
5258         return 0;
5259 }
5260
5261 /**
5262  * i40e_do_reset - Start a PF or Core Reset sequence
5263  * @pf: board private structure
5264  * @reset_flags: which reset is requested
5265  *
5266  * The essential difference in resets is that the PF Reset
5267  * doesn't clear the packet buffers, doesn't reset the PE
5268  * firmware, and doesn't bother the other PFs on the chip.
5269  **/
5270 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5271 {
5272         u32 val;
5273
5274         WARN_ON(in_interrupt());
5275
5276         if (i40e_check_asq_alive(&pf->hw))
5277                 i40e_vc_notify_reset(pf);
5278
5279         /* do the biggest reset indicated */
5280         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5281
5282                 /* Request a Global Reset
5283                  *
5284                  * This will start the chip's countdown to the actual full
5285                  * chip reset event, and a warning interrupt to be sent
5286                  * to all PFs, including the requestor.  Our handler
5287                  * for the warning interrupt will deal with the shutdown
5288                  * and recovery of the switch setup.
5289                  */
5290                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5291                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5292                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5293                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5294
5295         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5296
5297                 /* Request a Core Reset
5298                  *
5299                  * Same as Global Reset, except does *not* include the MAC/PHY
5300                  */
5301                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5302                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5303                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5304                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5305                 i40e_flush(&pf->hw);
5306
5307         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5308
5309                 /* Request a PF Reset
5310                  *
5311                  * Resets only the PF-specific registers
5312                  *
5313                  * This goes directly to the tear-down and rebuild of
5314                  * the switch, since we need to do all the recovery as
5315                  * for the Core Reset.
5316                  */
5317                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5318                 i40e_handle_reset_warning(pf);
5319
5320         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5321                 int v;
5322
5323                 /* Find the VSI(s) that requested a re-init */
5324                 dev_info(&pf->pdev->dev,
5325                          "VSI reinit requested\n");
5326                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5327                         struct i40e_vsi *vsi = pf->vsi[v];
5328                         if (vsi != NULL &&
5329                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5330                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5331                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5332                         }
5333                 }
5334
5335                 /* no further action needed, so return now */
5336                 return;
5337         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5338                 int v;
5339
5340                 /* Find the VSI(s) that needs to be brought down */
5341                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5342                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5343                         struct i40e_vsi *vsi = pf->vsi[v];
5344                         if (vsi != NULL &&
5345                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5346                                 set_bit(__I40E_DOWN, &vsi->state);
5347                                 i40e_down(vsi);
5348                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5349                         }
5350                 }
5351
5352                 /* no further action needed, so return now */
5353                 return;
5354         } else {
5355                 dev_info(&pf->pdev->dev,
5356                          "bad reset request 0x%08x\n", reset_flags);
5357                 return;
5358         }
5359 }
5360
5361 #ifdef CONFIG_I40E_DCB
5362 /**
5363  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5364  * @pf: board private structure
5365  * @old_cfg: current DCB config
5366  * @new_cfg: new DCB config
5367  **/
5368 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5369                             struct i40e_dcbx_config *old_cfg,
5370                             struct i40e_dcbx_config *new_cfg)
5371 {
5372         bool need_reconfig = false;
5373
5374         /* Check if ETS configuration has changed */
5375         if (memcmp(&new_cfg->etscfg,
5376                    &old_cfg->etscfg,
5377                    sizeof(new_cfg->etscfg))) {
5378                 /* If Priority Table has changed reconfig is needed */
5379                 if (memcmp(&new_cfg->etscfg.prioritytable,
5380                            &old_cfg->etscfg.prioritytable,
5381                            sizeof(new_cfg->etscfg.prioritytable))) {
5382                         need_reconfig = true;
5383                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5384                 }
5385
5386                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5387                            &old_cfg->etscfg.tcbwtable,
5388                            sizeof(new_cfg->etscfg.tcbwtable)))
5389                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5390
5391                 if (memcmp(&new_cfg->etscfg.tsatable,
5392                            &old_cfg->etscfg.tsatable,
5393                            sizeof(new_cfg->etscfg.tsatable)))
5394                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5395         }
5396
5397         /* Check if PFC configuration has changed */
5398         if (memcmp(&new_cfg->pfc,
5399                    &old_cfg->pfc,
5400                    sizeof(new_cfg->pfc))) {
5401                 need_reconfig = true;
5402                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5403         }
5404
5405         /* Check if APP Table has changed */
5406         if (memcmp(&new_cfg->app,
5407                    &old_cfg->app,
5408                    sizeof(new_cfg->app))) {
5409                 need_reconfig = true;
5410                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5411         }
5412
5413         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5414         return need_reconfig;
5415 }
5416
5417 /**
5418  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5419  * @pf: board private structure
5420  * @e: event info posted on ARQ
5421  **/
5422 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5423                                   struct i40e_arq_event_info *e)
5424 {
5425         struct i40e_aqc_lldp_get_mib *mib =
5426                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5427         struct i40e_hw *hw = &pf->hw;
5428         struct i40e_dcbx_config tmp_dcbx_cfg;
5429         bool need_reconfig = false;
5430         int ret = 0;
5431         u8 type;
5432
5433         /* Not DCB capable or capability disabled */
5434         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5435                 return ret;
5436
5437         /* Ignore if event is not for Nearest Bridge */
5438         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5439                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5440         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5441         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5442                 return ret;
5443
5444         /* Check MIB Type and return if event for Remote MIB update */
5445         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5446         dev_dbg(&pf->pdev->dev,
5447                 "LLDP event mib type %s\n", type ? "remote" : "local");
5448         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5449                 /* Update the remote cached instance and return */
5450                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5451                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5452                                 &hw->remote_dcbx_config);
5453                 goto exit;
5454         }
5455
5456         /* Store the old configuration */
5457         tmp_dcbx_cfg = hw->local_dcbx_config;
5458
5459         /* Reset the old DCBx configuration data */
5460         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5461         /* Get updated DCBX data from firmware */
5462         ret = i40e_get_dcb_config(&pf->hw);
5463         if (ret) {
5464                 dev_info(&pf->pdev->dev,
5465                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5466                          i40e_stat_str(&pf->hw, ret),
5467                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5468                 goto exit;
5469         }
5470
5471         /* No change detected in DCBX configs */
5472         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5473                     sizeof(tmp_dcbx_cfg))) {
5474                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5475                 goto exit;
5476         }
5477
5478         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5479                                                &hw->local_dcbx_config);
5480
5481         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5482
5483         if (!need_reconfig)
5484                 goto exit;
5485
5486         /* Enable DCB tagging only when more than one TC */
5487         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5488                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5489         else
5490                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5491
5492         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5493         /* Reconfiguration needed quiesce all VSIs */
5494         i40e_pf_quiesce_all_vsi(pf);
5495
5496         /* Changes in configuration update VEB/VSI */
5497         i40e_dcb_reconfigure(pf);
5498
5499         ret = i40e_resume_port_tx(pf);
5500
5501         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5502         /* In case of error no point in resuming VSIs */
5503         if (ret)
5504                 goto exit;
5505
5506         /* Wait for the PF's Tx queues to be disabled */
5507         ret = i40e_pf_wait_txq_disabled(pf);
5508         if (ret) {
5509                 /* Schedule PF reset to recover */
5510                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5511                 i40e_service_event_schedule(pf);
5512         } else {
5513                 i40e_pf_unquiesce_all_vsi(pf);
5514         }
5515
5516 exit:
5517         return ret;
5518 }
5519 #endif /* CONFIG_I40E_DCB */
5520
5521 /**
5522  * i40e_do_reset_safe - Protected reset path for userland calls.
5523  * @pf: board private structure
5524  * @reset_flags: which reset is requested
5525  *
5526  **/
5527 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5528 {
5529         rtnl_lock();
5530         i40e_do_reset(pf, reset_flags);
5531         rtnl_unlock();
5532 }
5533
5534 /**
5535  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5536  * @pf: board private structure
5537  * @e: event info posted on ARQ
5538  *
5539  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5540  * and VF queues
5541  **/
5542 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5543                                            struct i40e_arq_event_info *e)
5544 {
5545         struct i40e_aqc_lan_overflow *data =
5546                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5547         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5548         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5549         struct i40e_hw *hw = &pf->hw;
5550         struct i40e_vf *vf;
5551         u16 vf_id;
5552
5553         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5554                 queue, qtx_ctl);
5555
5556         /* Queue belongs to VF, find the VF and issue VF reset */
5557         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5558             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5559                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5560                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5561                 vf_id -= hw->func_caps.vf_base_id;
5562                 vf = &pf->vf[vf_id];
5563                 i40e_vc_notify_vf_reset(vf);
5564                 /* Allow VF to process pending reset notification */
5565                 msleep(20);
5566                 i40e_reset_vf(vf, false);
5567         }
5568 }
5569
5570 /**
5571  * i40e_service_event_complete - Finish up the service event
5572  * @pf: board private structure
5573  **/
5574 static void i40e_service_event_complete(struct i40e_pf *pf)
5575 {
5576         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5577
5578         /* flush memory to make sure state is correct before next watchog */
5579         smp_mb__before_atomic();
5580         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5581 }
5582
5583 /**
5584  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5585  * @pf: board private structure
5586  **/
5587 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5588 {
5589         u32 val, fcnt_prog;
5590
5591         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5592         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5593         return fcnt_prog;
5594 }
5595
5596 /**
5597  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5598  * @pf: board private structure
5599  **/
5600 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5601 {
5602         u32 val, fcnt_prog;
5603
5604         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5605         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5606                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5607                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5608         return fcnt_prog;
5609 }
5610
5611 /**
5612  * i40e_get_global_fd_count - Get total FD filters programmed on device
5613  * @pf: board private structure
5614  **/
5615 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5616 {
5617         u32 val, fcnt_prog;
5618
5619         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5620         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5621                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5622                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5623         return fcnt_prog;
5624 }
5625
5626 /**
5627  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5628  * @pf: board private structure
5629  **/
5630 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5631 {
5632         u32 fcnt_prog, fcnt_avail;
5633
5634         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5635                 return;
5636
5637         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5638          * to re-enable
5639          */
5640         fcnt_prog = i40e_get_global_fd_count(pf);
5641         fcnt_avail = pf->fdir_pf_filter_count;
5642         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5643             (pf->fd_add_err == 0) ||
5644             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5645                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5646                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5647                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5648                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5649                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5650                 }
5651         }
5652         /* Wait for some more space to be available to turn on ATR */
5653         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5654                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5655                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5656                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5657                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5658                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5659                 }
5660         }
5661 }
5662
5663 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5664 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5665 /**
5666  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5667  * @pf: board private structure
5668  **/
5669 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5670 {
5671         unsigned long min_flush_time;
5672         int flush_wait_retry = 50;
5673         bool disable_atr = false;
5674         int fd_room;
5675         int reg;
5676
5677         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5678                 return;
5679
5680         if (time_after(jiffies, pf->fd_flush_timestamp +
5681                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5682                 /* If the flush is happening too quick and we have mostly
5683                  * SB rules we should not re-enable ATR for some time.
5684                  */
5685                 min_flush_time = pf->fd_flush_timestamp
5686                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5687                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5688
5689                 if (!(time_after(jiffies, min_flush_time)) &&
5690                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5691                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5692                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5693                         disable_atr = true;
5694                 }
5695
5696                 pf->fd_flush_timestamp = jiffies;
5697                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5698                 /* flush all filters */
5699                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5700                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5701                 i40e_flush(&pf->hw);
5702                 pf->fd_flush_cnt++;
5703                 pf->fd_add_err = 0;
5704                 do {
5705                         /* Check FD flush status every 5-6msec */
5706                         usleep_range(5000, 6000);
5707                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5708                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5709                                 break;
5710                 } while (flush_wait_retry--);
5711                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5712                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5713                 } else {
5714                         /* replay sideband filters */
5715                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5716                         if (!disable_atr)
5717                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5718                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5719                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5720                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5721                 }
5722         }
5723 }
5724
5725 /**
5726  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5727  * @pf: board private structure
5728  **/
5729 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5730 {
5731         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5732 }
5733
5734 /* We can see up to 256 filter programming desc in transit if the filters are
5735  * being applied really fast; before we see the first
5736  * filter miss error on Rx queue 0. Accumulating enough error messages before
5737  * reacting will make sure we don't cause flush too often.
5738  */
5739 #define I40E_MAX_FD_PROGRAM_ERROR 256
5740
5741 /**
5742  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5743  * @pf: board private structure
5744  **/
5745 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5746 {
5747
5748         /* if interface is down do nothing */
5749         if (test_bit(__I40E_DOWN, &pf->state))
5750                 return;
5751
5752         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5753                 return;
5754
5755         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5756                 i40e_fdir_flush_and_replay(pf);
5757
5758         i40e_fdir_check_and_reenable(pf);
5759
5760 }
5761
5762 /**
5763  * i40e_vsi_link_event - notify VSI of a link event
5764  * @vsi: vsi to be notified
5765  * @link_up: link up or down
5766  **/
5767 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5768 {
5769         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5770                 return;
5771
5772         switch (vsi->type) {
5773         case I40E_VSI_MAIN:
5774 #ifdef I40E_FCOE
5775         case I40E_VSI_FCOE:
5776 #endif
5777                 if (!vsi->netdev || !vsi->netdev_registered)
5778                         break;
5779
5780                 if (link_up) {
5781                         netif_carrier_on(vsi->netdev);
5782                         netif_tx_wake_all_queues(vsi->netdev);
5783                 } else {
5784                         netif_carrier_off(vsi->netdev);
5785                         netif_tx_stop_all_queues(vsi->netdev);
5786                 }
5787                 break;
5788
5789         case I40E_VSI_SRIOV:
5790         case I40E_VSI_VMDQ2:
5791         case I40E_VSI_CTRL:
5792         case I40E_VSI_MIRROR:
5793         default:
5794                 /* there is no notification for other VSIs */
5795                 break;
5796         }
5797 }
5798
5799 /**
5800  * i40e_veb_link_event - notify elements on the veb of a link event
5801  * @veb: veb to be notified
5802  * @link_up: link up or down
5803  **/
5804 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5805 {
5806         struct i40e_pf *pf;
5807         int i;
5808
5809         if (!veb || !veb->pf)
5810                 return;
5811         pf = veb->pf;
5812
5813         /* depth first... */
5814         for (i = 0; i < I40E_MAX_VEB; i++)
5815                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5816                         i40e_veb_link_event(pf->veb[i], link_up);
5817
5818         /* ... now the local VSIs */
5819         for (i = 0; i < pf->num_alloc_vsi; i++)
5820                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5821                         i40e_vsi_link_event(pf->vsi[i], link_up);
5822 }
5823
5824 /**
5825  * i40e_link_event - Update netif_carrier status
5826  * @pf: board private structure
5827  **/
5828 static void i40e_link_event(struct i40e_pf *pf)
5829 {
5830         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5831         u8 new_link_speed, old_link_speed;
5832         i40e_status status;
5833         bool new_link, old_link;
5834
5835         /* set this to force the get_link_status call to refresh state */
5836         pf->hw.phy.get_link_info = true;
5837
5838         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5839
5840         status = i40e_get_link_status(&pf->hw, &new_link);
5841         if (status) {
5842                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
5843                         status);
5844                 return;
5845         }
5846
5847         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5848         new_link_speed = pf->hw.phy.link_info.link_speed;
5849
5850         if (new_link == old_link &&
5851             new_link_speed == old_link_speed &&
5852             (test_bit(__I40E_DOWN, &vsi->state) ||
5853              new_link == netif_carrier_ok(vsi->netdev)))
5854                 return;
5855
5856         if (!test_bit(__I40E_DOWN, &vsi->state))
5857                 i40e_print_link_message(vsi, new_link);
5858
5859         /* Notify the base of the switch tree connected to
5860          * the link.  Floating VEBs are not notified.
5861          */
5862         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5863                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5864         else
5865                 i40e_vsi_link_event(vsi, new_link);
5866
5867         if (pf->vf)
5868                 i40e_vc_notify_link_state(pf);
5869
5870         if (pf->flags & I40E_FLAG_PTP)
5871                 i40e_ptp_set_increment(pf);
5872 }
5873
5874 /**
5875  * i40e_watchdog_subtask - periodic checks not using event driven response
5876  * @pf: board private structure
5877  **/
5878 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5879 {
5880         int i;
5881
5882         /* if interface is down do nothing */
5883         if (test_bit(__I40E_DOWN, &pf->state) ||
5884             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5885                 return;
5886
5887         /* make sure we don't do these things too often */
5888         if (time_before(jiffies, (pf->service_timer_previous +
5889                                   pf->service_timer_period)))
5890                 return;
5891         pf->service_timer_previous = jiffies;
5892
5893         i40e_link_event(pf);
5894
5895         /* Update the stats for active netdevs so the network stack
5896          * can look at updated numbers whenever it cares to
5897          */
5898         for (i = 0; i < pf->num_alloc_vsi; i++)
5899                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5900                         i40e_update_stats(pf->vsi[i]);
5901
5902         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5903                 /* Update the stats for the active switching components */
5904                 for (i = 0; i < I40E_MAX_VEB; i++)
5905                         if (pf->veb[i])
5906                                 i40e_update_veb_stats(pf->veb[i]);
5907         }
5908
5909         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5910 }
5911
5912 /**
5913  * i40e_reset_subtask - Set up for resetting the device and driver
5914  * @pf: board private structure
5915  **/
5916 static void i40e_reset_subtask(struct i40e_pf *pf)
5917 {
5918         u32 reset_flags = 0;
5919
5920         rtnl_lock();
5921         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5922                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5923                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5924         }
5925         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5926                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5927                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5928         }
5929         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5930                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5931                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5932         }
5933         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5934                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5935                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5936         }
5937         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5938                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5939                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5940         }
5941
5942         /* If there's a recovery already waiting, it takes
5943          * precedence before starting a new reset sequence.
5944          */
5945         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5946                 i40e_handle_reset_warning(pf);
5947                 goto unlock;
5948         }
5949
5950         /* If we're already down or resetting, just bail */
5951         if (reset_flags &&
5952             !test_bit(__I40E_DOWN, &pf->state) &&
5953             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5954                 i40e_do_reset(pf, reset_flags);
5955
5956 unlock:
5957         rtnl_unlock();
5958 }
5959
5960 /**
5961  * i40e_handle_link_event - Handle link event
5962  * @pf: board private structure
5963  * @e: event info posted on ARQ
5964  **/
5965 static void i40e_handle_link_event(struct i40e_pf *pf,
5966                                    struct i40e_arq_event_info *e)
5967 {
5968         struct i40e_hw *hw = &pf->hw;
5969         struct i40e_aqc_get_link_status *status =
5970                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5971
5972         /* save off old link status information */
5973         hw->phy.link_info_old = hw->phy.link_info;
5974
5975         /* Do a new status request to re-enable LSE reporting
5976          * and load new status information into the hw struct
5977          * This completely ignores any state information
5978          * in the ARQ event info, instead choosing to always
5979          * issue the AQ update link status command.
5980          */
5981         i40e_link_event(pf);
5982
5983         /* check for unqualified module, if link is down */
5984         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5985             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5986             (!(status->link_info & I40E_AQ_LINK_UP)))
5987                 dev_err(&pf->pdev->dev,
5988                         "The driver failed to link because an unqualified module was detected.\n");
5989 }
5990
5991 /**
5992  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5993  * @pf: board private structure
5994  **/
5995 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5996 {
5997         struct i40e_arq_event_info event;
5998         struct i40e_hw *hw = &pf->hw;
5999         u16 pending, i = 0;
6000         i40e_status ret;
6001         u16 opcode;
6002         u32 oldval;
6003         u32 val;
6004
6005         /* Do not run clean AQ when PF reset fails */
6006         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6007                 return;
6008
6009         /* check for error indications */
6010         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6011         oldval = val;
6012         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6013                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6014                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6015         }
6016         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6017                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6018                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6019         }
6020         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6021                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6022                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6023         }
6024         if (oldval != val)
6025                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6026
6027         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6028         oldval = val;
6029         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6030                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6031                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6032         }
6033         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6034                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6035                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6036         }
6037         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6038                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6039                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6040         }
6041         if (oldval != val)
6042                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6043
6044         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6045         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6046         if (!event.msg_buf)
6047                 return;
6048
6049         do {
6050                 ret = i40e_clean_arq_element(hw, &event, &pending);
6051                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6052                         break;
6053                 else if (ret) {
6054                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6055                         break;
6056                 }
6057
6058                 opcode = le16_to_cpu(event.desc.opcode);
6059                 switch (opcode) {
6060
6061                 case i40e_aqc_opc_get_link_status:
6062                         i40e_handle_link_event(pf, &event);
6063                         break;
6064                 case i40e_aqc_opc_send_msg_to_pf:
6065                         ret = i40e_vc_process_vf_msg(pf,
6066                                         le16_to_cpu(event.desc.retval),
6067                                         le32_to_cpu(event.desc.cookie_high),
6068                                         le32_to_cpu(event.desc.cookie_low),
6069                                         event.msg_buf,
6070                                         event.msg_len);
6071                         break;
6072                 case i40e_aqc_opc_lldp_update_mib:
6073                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6074 #ifdef CONFIG_I40E_DCB
6075                         rtnl_lock();
6076                         ret = i40e_handle_lldp_event(pf, &event);
6077                         rtnl_unlock();
6078 #endif /* CONFIG_I40E_DCB */
6079                         break;
6080                 case i40e_aqc_opc_event_lan_overflow:
6081                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6082                         i40e_handle_lan_overflow_event(pf, &event);
6083                         break;
6084                 case i40e_aqc_opc_send_msg_to_peer:
6085                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6086                         break;
6087                 case i40e_aqc_opc_nvm_erase:
6088                 case i40e_aqc_opc_nvm_update:
6089                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6090                         break;
6091                 default:
6092                         dev_info(&pf->pdev->dev,
6093                                  "ARQ Error: Unknown event 0x%04x received\n",
6094                                  opcode);
6095                         break;
6096                 }
6097         } while (pending && (i++ < pf->adminq_work_limit));
6098
6099         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6100         /* re-enable Admin queue interrupt cause */
6101         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6102         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6103         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6104         i40e_flush(hw);
6105
6106         kfree(event.msg_buf);
6107 }
6108
6109 /**
6110  * i40e_verify_eeprom - make sure eeprom is good to use
6111  * @pf: board private structure
6112  **/
6113 static void i40e_verify_eeprom(struct i40e_pf *pf)
6114 {
6115         int err;
6116
6117         err = i40e_diag_eeprom_test(&pf->hw);
6118         if (err) {
6119                 /* retry in case of garbage read */
6120                 err = i40e_diag_eeprom_test(&pf->hw);
6121                 if (err) {
6122                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6123                                  err);
6124                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6125                 }
6126         }
6127
6128         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6129                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6130                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6131         }
6132 }
6133
6134 /**
6135  * i40e_enable_pf_switch_lb
6136  * @pf: pointer to the PF structure
6137  *
6138  * enable switch loop back or die - no point in a return value
6139  **/
6140 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6141 {
6142         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6143         struct i40e_vsi_context ctxt;
6144         int ret;
6145
6146         ctxt.seid = pf->main_vsi_seid;
6147         ctxt.pf_num = pf->hw.pf_id;
6148         ctxt.vf_num = 0;
6149         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6150         if (ret) {
6151                 dev_info(&pf->pdev->dev,
6152                          "couldn't get PF vsi config, err %s aq_err %s\n",
6153                          i40e_stat_str(&pf->hw, ret),
6154                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6155                 return;
6156         }
6157         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6158         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6159         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6160
6161         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6162         if (ret) {
6163                 dev_info(&pf->pdev->dev,
6164                          "update vsi switch failed, err %s aq_err %s\n",
6165                          i40e_stat_str(&pf->hw, ret),
6166                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6167         }
6168 }
6169
6170 /**
6171  * i40e_disable_pf_switch_lb
6172  * @pf: pointer to the PF structure
6173  *
6174  * disable switch loop back or die - no point in a return value
6175  **/
6176 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6177 {
6178         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6179         struct i40e_vsi_context ctxt;
6180         int ret;
6181
6182         ctxt.seid = pf->main_vsi_seid;
6183         ctxt.pf_num = pf->hw.pf_id;
6184         ctxt.vf_num = 0;
6185         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6186         if (ret) {
6187                 dev_info(&pf->pdev->dev,
6188                          "couldn't get PF vsi config, err %s aq_err %s\n",
6189                          i40e_stat_str(&pf->hw, ret),
6190                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6191                 return;
6192         }
6193         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6194         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6195         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6196
6197         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6198         if (ret) {
6199                 dev_info(&pf->pdev->dev,
6200                          "update vsi switch failed, err %s aq_err %s\n",
6201                          i40e_stat_str(&pf->hw, ret),
6202                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6203         }
6204 }
6205
6206 /**
6207  * i40e_config_bridge_mode - Configure the HW bridge mode
6208  * @veb: pointer to the bridge instance
6209  *
6210  * Configure the loop back mode for the LAN VSI that is downlink to the
6211  * specified HW bridge instance. It is expected this function is called
6212  * when a new HW bridge is instantiated.
6213  **/
6214 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6215 {
6216         struct i40e_pf *pf = veb->pf;
6217
6218         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6219                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6220         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6221                 i40e_disable_pf_switch_lb(pf);
6222         else
6223                 i40e_enable_pf_switch_lb(pf);
6224 }
6225
6226 /**
6227  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6228  * @veb: pointer to the VEB instance
6229  *
6230  * This is a recursive function that first builds the attached VSIs then
6231  * recurses in to build the next layer of VEB.  We track the connections
6232  * through our own index numbers because the seid's from the HW could
6233  * change across the reset.
6234  **/
6235 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6236 {
6237         struct i40e_vsi *ctl_vsi = NULL;
6238         struct i40e_pf *pf = veb->pf;
6239         int v, veb_idx;
6240         int ret;
6241
6242         /* build VSI that owns this VEB, temporarily attached to base VEB */
6243         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6244                 if (pf->vsi[v] &&
6245                     pf->vsi[v]->veb_idx == veb->idx &&
6246                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6247                         ctl_vsi = pf->vsi[v];
6248                         break;
6249                 }
6250         }
6251         if (!ctl_vsi) {
6252                 dev_info(&pf->pdev->dev,
6253                          "missing owner VSI for veb_idx %d\n", veb->idx);
6254                 ret = -ENOENT;
6255                 goto end_reconstitute;
6256         }
6257         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6258                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6259         ret = i40e_add_vsi(ctl_vsi);
6260         if (ret) {
6261                 dev_info(&pf->pdev->dev,
6262                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6263                          veb->idx, ret);
6264                 goto end_reconstitute;
6265         }
6266         i40e_vsi_reset_stats(ctl_vsi);
6267
6268         /* create the VEB in the switch and move the VSI onto the VEB */
6269         ret = i40e_add_veb(veb, ctl_vsi);
6270         if (ret)
6271                 goto end_reconstitute;
6272
6273         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6274                 veb->bridge_mode = BRIDGE_MODE_VEB;
6275         else
6276                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6277         i40e_config_bridge_mode(veb);
6278
6279         /* create the remaining VSIs attached to this VEB */
6280         for (v = 0; v < pf->num_alloc_vsi; v++) {
6281                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6282                         continue;
6283
6284                 if (pf->vsi[v]->veb_idx == veb->idx) {
6285                         struct i40e_vsi *vsi = pf->vsi[v];
6286                         vsi->uplink_seid = veb->seid;
6287                         ret = i40e_add_vsi(vsi);
6288                         if (ret) {
6289                                 dev_info(&pf->pdev->dev,
6290                                          "rebuild of vsi_idx %d failed: %d\n",
6291                                          v, ret);
6292                                 goto end_reconstitute;
6293                         }
6294                         i40e_vsi_reset_stats(vsi);
6295                 }
6296         }
6297
6298         /* create any VEBs attached to this VEB - RECURSION */
6299         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6300                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6301                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6302                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6303                         if (ret)
6304                                 break;
6305                 }
6306         }
6307
6308 end_reconstitute:
6309         return ret;
6310 }
6311
6312 /**
6313  * i40e_get_capabilities - get info about the HW
6314  * @pf: the PF struct
6315  **/
6316 static int i40e_get_capabilities(struct i40e_pf *pf)
6317 {
6318         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6319         u16 data_size;
6320         int buf_len;
6321         int err;
6322
6323         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6324         do {
6325                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6326                 if (!cap_buf)
6327                         return -ENOMEM;
6328
6329                 /* this loads the data into the hw struct for us */
6330                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6331                                             &data_size,
6332                                             i40e_aqc_opc_list_func_capabilities,
6333                                             NULL);
6334                 /* data loaded, buffer no longer needed */
6335                 kfree(cap_buf);
6336
6337                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6338                         /* retry with a larger buffer */
6339                         buf_len = data_size;
6340                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6341                         dev_info(&pf->pdev->dev,
6342                                  "capability discovery failed, err %s aq_err %s\n",
6343                                  i40e_stat_str(&pf->hw, err),
6344                                  i40e_aq_str(&pf->hw,
6345                                              pf->hw.aq.asq_last_status));
6346                         return -ENODEV;
6347                 }
6348         } while (err);
6349
6350         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6351             (pf->hw.aq.fw_maj_ver < 2)) {
6352                 pf->hw.func_caps.num_msix_vectors++;
6353                 pf->hw.func_caps.num_msix_vectors_vf++;
6354         }
6355
6356         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6357                 dev_info(&pf->pdev->dev,
6358                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
6359                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6360                          pf->hw.func_caps.num_msix_vectors,
6361                          pf->hw.func_caps.num_msix_vectors_vf,
6362                          pf->hw.func_caps.fd_filters_guaranteed,
6363                          pf->hw.func_caps.fd_filters_best_effort,
6364                          pf->hw.func_caps.num_tx_qp,
6365                          pf->hw.func_caps.num_vsis);
6366
6367 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6368                        + pf->hw.func_caps.num_vfs)
6369         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6370                 dev_info(&pf->pdev->dev,
6371                          "got num_vsis %d, setting num_vsis to %d\n",
6372                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6373                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6374         }
6375
6376         return 0;
6377 }
6378
6379 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6380
6381 /**
6382  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6383  * @pf: board private structure
6384  **/
6385 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6386 {
6387         struct i40e_vsi *vsi;
6388         int i;
6389
6390         /* quick workaround for an NVM issue that leaves a critical register
6391          * uninitialized
6392          */
6393         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6394                 static const u32 hkey[] = {
6395                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6396                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6397                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6398                         0x95b3a76d};
6399
6400                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6401                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6402         }
6403
6404         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6405                 return;
6406
6407         /* find existing VSI and see if it needs configuring */
6408         vsi = NULL;
6409         for (i = 0; i < pf->num_alloc_vsi; i++) {
6410                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6411                         vsi = pf->vsi[i];
6412                         break;
6413                 }
6414         }
6415
6416         /* create a new VSI if none exists */
6417         if (!vsi) {
6418                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6419                                      pf->vsi[pf->lan_vsi]->seid, 0);
6420                 if (!vsi) {
6421                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6422                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6423                         return;
6424                 }
6425         }
6426
6427         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6428 }
6429
6430 /**
6431  * i40e_fdir_teardown - release the Flow Director resources
6432  * @pf: board private structure
6433  **/
6434 static void i40e_fdir_teardown(struct i40e_pf *pf)
6435 {
6436         int i;
6437
6438         i40e_fdir_filter_exit(pf);
6439         for (i = 0; i < pf->num_alloc_vsi; i++) {
6440                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6441                         i40e_vsi_release(pf->vsi[i]);
6442                         break;
6443                 }
6444         }
6445 }
6446
6447 /**
6448  * i40e_prep_for_reset - prep for the core to reset
6449  * @pf: board private structure
6450  *
6451  * Close up the VFs and other things in prep for PF Reset.
6452   **/
6453 static void i40e_prep_for_reset(struct i40e_pf *pf)
6454 {
6455         struct i40e_hw *hw = &pf->hw;
6456         i40e_status ret = 0;
6457         u32 v;
6458
6459         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6460         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6461                 return;
6462
6463         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6464
6465         /* quiesce the VSIs and their queues that are not already DOWN */
6466         i40e_pf_quiesce_all_vsi(pf);
6467
6468         for (v = 0; v < pf->num_alloc_vsi; v++) {
6469                 if (pf->vsi[v])
6470                         pf->vsi[v]->seid = 0;
6471         }
6472
6473         i40e_shutdown_adminq(&pf->hw);
6474
6475         /* call shutdown HMC */
6476         if (hw->hmc.hmc_obj) {
6477                 ret = i40e_shutdown_lan_hmc(hw);
6478                 if (ret)
6479                         dev_warn(&pf->pdev->dev,
6480                                  "shutdown_lan_hmc failed: %d\n", ret);
6481         }
6482 }
6483
6484 /**
6485  * i40e_send_version - update firmware with driver version
6486  * @pf: PF struct
6487  */
6488 static void i40e_send_version(struct i40e_pf *pf)
6489 {
6490         struct i40e_driver_version dv;
6491
6492         dv.major_version = DRV_VERSION_MAJOR;
6493         dv.minor_version = DRV_VERSION_MINOR;
6494         dv.build_version = DRV_VERSION_BUILD;
6495         dv.subbuild_version = 0;
6496         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6497         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6498 }
6499
6500 /**
6501  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6502  * @pf: board private structure
6503  * @reinit: if the Main VSI needs to re-initialized.
6504  **/
6505 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6506 {
6507         struct i40e_hw *hw = &pf->hw;
6508         u8 set_fc_aq_fail = 0;
6509         i40e_status ret;
6510         u32 v;
6511
6512         /* Now we wait for GRST to settle out.
6513          * We don't have to delete the VEBs or VSIs from the hw switch
6514          * because the reset will make them disappear.
6515          */
6516         ret = i40e_pf_reset(hw);
6517         if (ret) {
6518                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6519                 set_bit(__I40E_RESET_FAILED, &pf->state);
6520                 goto clear_recovery;
6521         }
6522         pf->pfr_count++;
6523
6524         if (test_bit(__I40E_DOWN, &pf->state))
6525                 goto clear_recovery;
6526         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6527
6528         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6529         ret = i40e_init_adminq(&pf->hw);
6530         if (ret) {
6531                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6532                          i40e_stat_str(&pf->hw, ret),
6533                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6534                 goto clear_recovery;
6535         }
6536
6537         /* re-verify the eeprom if we just had an EMP reset */
6538         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6539                 i40e_verify_eeprom(pf);
6540
6541         i40e_clear_pxe_mode(hw);
6542         ret = i40e_get_capabilities(pf);
6543         if (ret)
6544                 goto end_core_reset;
6545
6546         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6547                                 hw->func_caps.num_rx_qp,
6548                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6549         if (ret) {
6550                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6551                 goto end_core_reset;
6552         }
6553         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6554         if (ret) {
6555                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6556                 goto end_core_reset;
6557         }
6558
6559 #ifdef CONFIG_I40E_DCB
6560         ret = i40e_init_pf_dcb(pf);
6561         if (ret) {
6562                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6563                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6564                 /* Continue without DCB enabled */
6565         }
6566 #endif /* CONFIG_I40E_DCB */
6567 #ifdef I40E_FCOE
6568         i40e_init_pf_fcoe(pf);
6569
6570 #endif
6571         /* do basic switch setup */
6572         ret = i40e_setup_pf_switch(pf, reinit);
6573         if (ret)
6574                 goto end_core_reset;
6575
6576         /* driver is only interested in link up/down and module qualification
6577          * reports from firmware
6578          */
6579         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6580                                        I40E_AQ_EVENT_LINK_UPDOWN |
6581                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6582         if (ret)
6583                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6584                          i40e_stat_str(&pf->hw, ret),
6585                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6586
6587         /* make sure our flow control settings are restored */
6588         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6589         if (ret)
6590                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6591                          i40e_stat_str(&pf->hw, ret),
6592                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6593
6594         /* Rebuild the VSIs and VEBs that existed before reset.
6595          * They are still in our local switch element arrays, so only
6596          * need to rebuild the switch model in the HW.
6597          *
6598          * If there were VEBs but the reconstitution failed, we'll try
6599          * try to recover minimal use by getting the basic PF VSI working.
6600          */
6601         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6602                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6603                 /* find the one VEB connected to the MAC, and find orphans */
6604                 for (v = 0; v < I40E_MAX_VEB; v++) {
6605                         if (!pf->veb[v])
6606                                 continue;
6607
6608                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6609                             pf->veb[v]->uplink_seid == 0) {
6610                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6611
6612                                 if (!ret)
6613                                         continue;
6614
6615                                 /* If Main VEB failed, we're in deep doodoo,
6616                                  * so give up rebuilding the switch and set up
6617                                  * for minimal rebuild of PF VSI.
6618                                  * If orphan failed, we'll report the error
6619                                  * but try to keep going.
6620                                  */
6621                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6622                                         dev_info(&pf->pdev->dev,
6623                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6624                                                  ret);
6625                                         pf->vsi[pf->lan_vsi]->uplink_seid
6626                                                                 = pf->mac_seid;
6627                                         break;
6628                                 } else if (pf->veb[v]->uplink_seid == 0) {
6629                                         dev_info(&pf->pdev->dev,
6630                                                  "rebuild of orphan VEB failed: %d\n",
6631                                                  ret);
6632                                 }
6633                         }
6634                 }
6635         }
6636
6637         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6638                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6639                 /* no VEB, so rebuild only the Main VSI */
6640                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6641                 if (ret) {
6642                         dev_info(&pf->pdev->dev,
6643                                  "rebuild of Main VSI failed: %d\n", ret);
6644                         goto end_core_reset;
6645                 }
6646         }
6647
6648         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6649             (pf->hw.aq.fw_maj_ver < 4)) {
6650                 msleep(75);
6651                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6652                 if (ret)
6653                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6654                                  i40e_stat_str(&pf->hw, ret),
6655                                  i40e_aq_str(&pf->hw,
6656                                              pf->hw.aq.asq_last_status));
6657         }
6658         /* reinit the misc interrupt */
6659         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6660                 ret = i40e_setup_misc_vector(pf);
6661
6662         /* restart the VSIs that were rebuilt and running before the reset */
6663         i40e_pf_unquiesce_all_vsi(pf);
6664
6665         if (pf->num_alloc_vfs) {
6666                 for (v = 0; v < pf->num_alloc_vfs; v++)
6667                         i40e_reset_vf(&pf->vf[v], true);
6668         }
6669
6670         /* tell the firmware that we're starting */
6671         i40e_send_version(pf);
6672
6673 end_core_reset:
6674         clear_bit(__I40E_RESET_FAILED, &pf->state);
6675 clear_recovery:
6676         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6677 }
6678
6679 /**
6680  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6681  * @pf: board private structure
6682  *
6683  * Close up the VFs and other things in prep for a Core Reset,
6684  * then get ready to rebuild the world.
6685  **/
6686 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6687 {
6688         i40e_prep_for_reset(pf);
6689         i40e_reset_and_rebuild(pf, false);
6690 }
6691
6692 /**
6693  * i40e_handle_mdd_event
6694  * @pf: pointer to the PF structure
6695  *
6696  * Called from the MDD irq handler to identify possibly malicious vfs
6697  **/
6698 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6699 {
6700         struct i40e_hw *hw = &pf->hw;
6701         bool mdd_detected = false;
6702         bool pf_mdd_detected = false;
6703         struct i40e_vf *vf;
6704         u32 reg;
6705         int i;
6706
6707         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6708                 return;
6709
6710         /* find what triggered the MDD event */
6711         reg = rd32(hw, I40E_GL_MDET_TX);
6712         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6713                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6714                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6715                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6716                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6717                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6718                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6719                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6720                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6721                                 pf->hw.func_caps.base_queue;
6722                 if (netif_msg_tx_err(pf))
6723                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6724                                  event, queue, pf_num, vf_num);
6725                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6726                 mdd_detected = true;
6727         }
6728         reg = rd32(hw, I40E_GL_MDET_RX);
6729         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6730                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6731                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6732                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6733                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6734                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6735                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6736                                 pf->hw.func_caps.base_queue;
6737                 if (netif_msg_rx_err(pf))
6738                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6739                                  event, queue, func);
6740                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6741                 mdd_detected = true;
6742         }
6743
6744         if (mdd_detected) {
6745                 reg = rd32(hw, I40E_PF_MDET_TX);
6746                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6747                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6748                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6749                         pf_mdd_detected = true;
6750                 }
6751                 reg = rd32(hw, I40E_PF_MDET_RX);
6752                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6753                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6754                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6755                         pf_mdd_detected = true;
6756                 }
6757                 /* Queue belongs to the PF, initiate a reset */
6758                 if (pf_mdd_detected) {
6759                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6760                         i40e_service_event_schedule(pf);
6761                 }
6762         }
6763
6764         /* see if one of the VFs needs its hand slapped */
6765         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6766                 vf = &(pf->vf[i]);
6767                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6768                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6769                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6770                         vf->num_mdd_events++;
6771                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6772                                  i);
6773                 }
6774
6775                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6776                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6777                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6778                         vf->num_mdd_events++;
6779                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6780                                  i);
6781                 }
6782
6783                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6784                         dev_info(&pf->pdev->dev,
6785                                  "Too many MDD events on VF %d, disabled\n", i);
6786                         dev_info(&pf->pdev->dev,
6787                                  "Use PF Control I/F to re-enable the VF\n");
6788                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6789                 }
6790         }
6791
6792         /* re-enable mdd interrupt cause */
6793         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6794         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6795         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6796         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6797         i40e_flush(hw);
6798 }
6799
6800 #ifdef CONFIG_I40E_VXLAN
6801 /**
6802  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6803  * @pf: board private structure
6804  **/
6805 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6806 {
6807         struct i40e_hw *hw = &pf->hw;
6808         i40e_status ret;
6809         __be16 port;
6810         int i;
6811
6812         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6813                 return;
6814
6815         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6816
6817         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6818                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6819                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6820                         port = pf->vxlan_ports[i];
6821                         if (port)
6822                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6823                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6824                                                      NULL, NULL);
6825                         else
6826                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6827
6828                         if (ret) {
6829                                 dev_info(&pf->pdev->dev,
6830                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6831                                          port ? "add" : "delete",
6832                                          ntohs(port), i,
6833                                          i40e_stat_str(&pf->hw, ret),
6834                                          i40e_aq_str(&pf->hw,
6835                                                     pf->hw.aq.asq_last_status));
6836                                 pf->vxlan_ports[i] = 0;
6837                         }
6838                 }
6839         }
6840 }
6841
6842 #endif
6843 /**
6844  * i40e_service_task - Run the driver's async subtasks
6845  * @work: pointer to work_struct containing our data
6846  **/
6847 static void i40e_service_task(struct work_struct *work)
6848 {
6849         struct i40e_pf *pf = container_of(work,
6850                                           struct i40e_pf,
6851                                           service_task);
6852         unsigned long start_time = jiffies;
6853
6854         /* don't bother with service tasks if a reset is in progress */
6855         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6856                 i40e_service_event_complete(pf);
6857                 return;
6858         }
6859
6860         i40e_detect_recover_hung(pf);
6861         i40e_reset_subtask(pf);
6862         i40e_handle_mdd_event(pf);
6863         i40e_vc_process_vflr_event(pf);
6864         i40e_watchdog_subtask(pf);
6865         i40e_fdir_reinit_subtask(pf);
6866         i40e_sync_filters_subtask(pf);
6867 #ifdef CONFIG_I40E_VXLAN
6868         i40e_sync_vxlan_filters_subtask(pf);
6869 #endif
6870         i40e_clean_adminq_subtask(pf);
6871
6872         i40e_service_event_complete(pf);
6873
6874         /* If the tasks have taken longer than one timer cycle or there
6875          * is more work to be done, reschedule the service task now
6876          * rather than wait for the timer to tick again.
6877          */
6878         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6879             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6880             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6881             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6882                 i40e_service_event_schedule(pf);
6883 }
6884
6885 /**
6886  * i40e_service_timer - timer callback
6887  * @data: pointer to PF struct
6888  **/
6889 static void i40e_service_timer(unsigned long data)
6890 {
6891         struct i40e_pf *pf = (struct i40e_pf *)data;
6892
6893         mod_timer(&pf->service_timer,
6894                   round_jiffies(jiffies + pf->service_timer_period));
6895         i40e_service_event_schedule(pf);
6896 }
6897
6898 /**
6899  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6900  * @vsi: the VSI being configured
6901  **/
6902 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6903 {
6904         struct i40e_pf *pf = vsi->back;
6905
6906         switch (vsi->type) {
6907         case I40E_VSI_MAIN:
6908                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6909                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6910                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6911                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6912                         vsi->num_q_vectors = pf->num_lan_msix;
6913                 else
6914                         vsi->num_q_vectors = 1;
6915
6916                 break;
6917
6918         case I40E_VSI_FDIR:
6919                 vsi->alloc_queue_pairs = 1;
6920                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6921                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6922                 vsi->num_q_vectors = 1;
6923                 break;
6924
6925         case I40E_VSI_VMDQ2:
6926                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6927                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6928                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6929                 vsi->num_q_vectors = pf->num_vmdq_msix;
6930                 break;
6931
6932         case I40E_VSI_SRIOV:
6933                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6934                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6935                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6936                 break;
6937
6938 #ifdef I40E_FCOE
6939         case I40E_VSI_FCOE:
6940                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6941                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6942                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6943                 vsi->num_q_vectors = pf->num_fcoe_msix;
6944                 break;
6945
6946 #endif /* I40E_FCOE */
6947         default:
6948                 WARN_ON(1);
6949                 return -ENODATA;
6950         }
6951
6952         return 0;
6953 }
6954
6955 /**
6956  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6957  * @type: VSI pointer
6958  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6959  *
6960  * On error: returns error code (negative)
6961  * On success: returns 0
6962  **/
6963 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6964 {
6965         int size;
6966         int ret = 0;
6967
6968         /* allocate memory for both Tx and Rx ring pointers */
6969         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6970         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6971         if (!vsi->tx_rings)
6972                 return -ENOMEM;
6973         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6974
6975         if (alloc_qvectors) {
6976                 /* allocate memory for q_vector pointers */
6977                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6978                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6979                 if (!vsi->q_vectors) {
6980                         ret = -ENOMEM;
6981                         goto err_vectors;
6982                 }
6983         }
6984         return ret;
6985
6986 err_vectors:
6987         kfree(vsi->tx_rings);
6988         return ret;
6989 }
6990
6991 /**
6992  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6993  * @pf: board private structure
6994  * @type: type of VSI
6995  *
6996  * On error: returns error code (negative)
6997  * On success: returns vsi index in PF (positive)
6998  **/
6999 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7000 {
7001         int ret = -ENODEV;
7002         struct i40e_vsi *vsi;
7003         int vsi_idx;
7004         int i;
7005
7006         /* Need to protect the allocation of the VSIs at the PF level */
7007         mutex_lock(&pf->switch_mutex);
7008
7009         /* VSI list may be fragmented if VSI creation/destruction has
7010          * been happening.  We can afford to do a quick scan to look
7011          * for any free VSIs in the list.
7012          *
7013          * find next empty vsi slot, looping back around if necessary
7014          */
7015         i = pf->next_vsi;
7016         while (i < pf->num_alloc_vsi && pf->vsi[i])
7017                 i++;
7018         if (i >= pf->num_alloc_vsi) {
7019                 i = 0;
7020                 while (i < pf->next_vsi && pf->vsi[i])
7021                         i++;
7022         }
7023
7024         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7025                 vsi_idx = i;             /* Found one! */
7026         } else {
7027                 ret = -ENODEV;
7028                 goto unlock_pf;  /* out of VSI slots! */
7029         }
7030         pf->next_vsi = ++i;
7031
7032         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7033         if (!vsi) {
7034                 ret = -ENOMEM;
7035                 goto unlock_pf;
7036         }
7037         vsi->type = type;
7038         vsi->back = pf;
7039         set_bit(__I40E_DOWN, &vsi->state);
7040         vsi->flags = 0;
7041         vsi->idx = vsi_idx;
7042         vsi->rx_itr_setting = pf->rx_itr_default;
7043         vsi->tx_itr_setting = pf->tx_itr_default;
7044         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7045                                 pf->rss_table_size : 64;
7046         vsi->netdev_registered = false;
7047         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7048         INIT_LIST_HEAD(&vsi->mac_filter_list);
7049         vsi->irqs_ready = false;
7050
7051         ret = i40e_set_num_rings_in_vsi(vsi);
7052         if (ret)
7053                 goto err_rings;
7054
7055         ret = i40e_vsi_alloc_arrays(vsi, true);
7056         if (ret)
7057                 goto err_rings;
7058
7059         /* Setup default MSIX irq handler for VSI */
7060         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7061
7062         pf->vsi[vsi_idx] = vsi;
7063         ret = vsi_idx;
7064         goto unlock_pf;
7065
7066 err_rings:
7067         pf->next_vsi = i - 1;
7068         kfree(vsi);
7069 unlock_pf:
7070         mutex_unlock(&pf->switch_mutex);
7071         return ret;
7072 }
7073
7074 /**
7075  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7076  * @type: VSI pointer
7077  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7078  *
7079  * On error: returns error code (negative)
7080  * On success: returns 0
7081  **/
7082 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7083 {
7084         /* free the ring and vector containers */
7085         if (free_qvectors) {
7086                 kfree(vsi->q_vectors);
7087                 vsi->q_vectors = NULL;
7088         }
7089         kfree(vsi->tx_rings);
7090         vsi->tx_rings = NULL;
7091         vsi->rx_rings = NULL;
7092 }
7093
7094 /**
7095  * i40e_vsi_clear - Deallocate the VSI provided
7096  * @vsi: the VSI being un-configured
7097  **/
7098 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7099 {
7100         struct i40e_pf *pf;
7101
7102         if (!vsi)
7103                 return 0;
7104
7105         if (!vsi->back)
7106                 goto free_vsi;
7107         pf = vsi->back;
7108
7109         mutex_lock(&pf->switch_mutex);
7110         if (!pf->vsi[vsi->idx]) {
7111                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7112                         vsi->idx, vsi->idx, vsi, vsi->type);
7113                 goto unlock_vsi;
7114         }
7115
7116         if (pf->vsi[vsi->idx] != vsi) {
7117                 dev_err(&pf->pdev->dev,
7118                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7119                         pf->vsi[vsi->idx]->idx,
7120                         pf->vsi[vsi->idx],
7121                         pf->vsi[vsi->idx]->type,
7122                         vsi->idx, vsi, vsi->type);
7123                 goto unlock_vsi;
7124         }
7125
7126         /* updates the PF for this cleared vsi */
7127         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7128         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7129
7130         i40e_vsi_free_arrays(vsi, true);
7131
7132         pf->vsi[vsi->idx] = NULL;
7133         if (vsi->idx < pf->next_vsi)
7134                 pf->next_vsi = vsi->idx;
7135
7136 unlock_vsi:
7137         mutex_unlock(&pf->switch_mutex);
7138 free_vsi:
7139         kfree(vsi);
7140
7141         return 0;
7142 }
7143
7144 /**
7145  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7146  * @vsi: the VSI being cleaned
7147  **/
7148 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7149 {
7150         int i;
7151
7152         if (vsi->tx_rings && vsi->tx_rings[0]) {
7153                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7154                         kfree_rcu(vsi->tx_rings[i], rcu);
7155                         vsi->tx_rings[i] = NULL;
7156                         vsi->rx_rings[i] = NULL;
7157                 }
7158         }
7159 }
7160
7161 /**
7162  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7163  * @vsi: the VSI being configured
7164  **/
7165 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7166 {
7167         struct i40e_ring *tx_ring, *rx_ring;
7168         struct i40e_pf *pf = vsi->back;
7169         int i;
7170
7171         /* Set basic values in the rings to be used later during open() */
7172         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7173                 /* allocate space for both Tx and Rx in one shot */
7174                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7175                 if (!tx_ring)
7176                         goto err_out;
7177
7178                 tx_ring->queue_index = i;
7179                 tx_ring->reg_idx = vsi->base_queue + i;
7180                 tx_ring->ring_active = false;
7181                 tx_ring->vsi = vsi;
7182                 tx_ring->netdev = vsi->netdev;
7183                 tx_ring->dev = &pf->pdev->dev;
7184                 tx_ring->count = vsi->num_desc;
7185                 tx_ring->size = 0;
7186                 tx_ring->dcb_tc = 0;
7187                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7188                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7189                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7190                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7191                 vsi->tx_rings[i] = tx_ring;
7192
7193                 rx_ring = &tx_ring[1];
7194                 rx_ring->queue_index = i;
7195                 rx_ring->reg_idx = vsi->base_queue + i;
7196                 rx_ring->ring_active = false;
7197                 rx_ring->vsi = vsi;
7198                 rx_ring->netdev = vsi->netdev;
7199                 rx_ring->dev = &pf->pdev->dev;
7200                 rx_ring->count = vsi->num_desc;
7201                 rx_ring->size = 0;
7202                 rx_ring->dcb_tc = 0;
7203                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7204                         set_ring_16byte_desc_enabled(rx_ring);
7205                 else
7206                         clear_ring_16byte_desc_enabled(rx_ring);
7207                 vsi->rx_rings[i] = rx_ring;
7208         }
7209
7210         return 0;
7211
7212 err_out:
7213         i40e_vsi_clear_rings(vsi);
7214         return -ENOMEM;
7215 }
7216
7217 /**
7218  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7219  * @pf: board private structure
7220  * @vectors: the number of MSI-X vectors to request
7221  *
7222  * Returns the number of vectors reserved, or error
7223  **/
7224 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7225 {
7226         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7227                                         I40E_MIN_MSIX, vectors);
7228         if (vectors < 0) {
7229                 dev_info(&pf->pdev->dev,
7230                          "MSI-X vector reservation failed: %d\n", vectors);
7231                 vectors = 0;
7232         }
7233
7234         return vectors;
7235 }
7236
7237 /**
7238  * i40e_init_msix - Setup the MSIX capability
7239  * @pf: board private structure
7240  *
7241  * Work with the OS to set up the MSIX vectors needed.
7242  *
7243  * Returns the number of vectors reserved or negative on failure
7244  **/
7245 static int i40e_init_msix(struct i40e_pf *pf)
7246 {
7247         struct i40e_hw *hw = &pf->hw;
7248         int vectors_left;
7249         int v_budget, i;
7250         int v_actual;
7251
7252         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7253                 return -ENODEV;
7254
7255         /* The number of vectors we'll request will be comprised of:
7256          *   - Add 1 for "other" cause for Admin Queue events, etc.
7257          *   - The number of LAN queue pairs
7258          *      - Queues being used for RSS.
7259          *              We don't need as many as max_rss_size vectors.
7260          *              use rss_size instead in the calculation since that
7261          *              is governed by number of cpus in the system.
7262          *      - assumes symmetric Tx/Rx pairing
7263          *   - The number of VMDq pairs
7264 #ifdef I40E_FCOE
7265          *   - The number of FCOE qps.
7266 #endif
7267          * Once we count this up, try the request.
7268          *
7269          * If we can't get what we want, we'll simplify to nearly nothing
7270          * and try again.  If that still fails, we punt.
7271          */
7272         vectors_left = hw->func_caps.num_msix_vectors;
7273         v_budget = 0;
7274
7275         /* reserve one vector for miscellaneous handler */
7276         if (vectors_left) {
7277                 v_budget++;
7278                 vectors_left--;
7279         }
7280
7281         /* reserve vectors for the main PF traffic queues */
7282         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7283         vectors_left -= pf->num_lan_msix;
7284         v_budget += pf->num_lan_msix;
7285
7286         /* reserve one vector for sideband flow director */
7287         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7288                 if (vectors_left) {
7289                         v_budget++;
7290                         vectors_left--;
7291                 } else {
7292                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7293                 }
7294         }
7295
7296 #ifdef I40E_FCOE
7297         /* can we reserve enough for FCoE? */
7298         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7299                 if (!vectors_left)
7300                         pf->num_fcoe_msix = 0;
7301                 else if (vectors_left >= pf->num_fcoe_qps)
7302                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7303                 else
7304                         pf->num_fcoe_msix = 1;
7305                 v_budget += pf->num_fcoe_msix;
7306                 vectors_left -= pf->num_fcoe_msix;
7307         }
7308
7309 #endif
7310         /* any vectors left over go for VMDq support */
7311         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7312                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7313                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7314
7315                 /* if we're short on vectors for what's desired, we limit
7316                  * the queues per vmdq.  If this is still more than are
7317                  * available, the user will need to change the number of
7318                  * queues/vectors used by the PF later with the ethtool
7319                  * channels command
7320                  */
7321                 if (vmdq_vecs < vmdq_vecs_wanted)
7322                         pf->num_vmdq_qps = 1;
7323                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7324
7325                 v_budget += vmdq_vecs;
7326                 vectors_left -= vmdq_vecs;
7327         }
7328
7329         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7330                                    GFP_KERNEL);
7331         if (!pf->msix_entries)
7332                 return -ENOMEM;
7333
7334         for (i = 0; i < v_budget; i++)
7335                 pf->msix_entries[i].entry = i;
7336         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7337
7338         if (v_actual != v_budget) {
7339                 /* If we have limited resources, we will start with no vectors
7340                  * for the special features and then allocate vectors to some
7341                  * of these features based on the policy and at the end disable
7342                  * the features that did not get any vectors.
7343                  */
7344 #ifdef I40E_FCOE
7345                 pf->num_fcoe_qps = 0;
7346                 pf->num_fcoe_msix = 0;
7347 #endif
7348                 pf->num_vmdq_msix = 0;
7349         }
7350
7351         if (v_actual < I40E_MIN_MSIX) {
7352                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7353                 kfree(pf->msix_entries);
7354                 pf->msix_entries = NULL;
7355                 return -ENODEV;
7356
7357         } else if (v_actual == I40E_MIN_MSIX) {
7358                 /* Adjust for minimal MSIX use */
7359                 pf->num_vmdq_vsis = 0;
7360                 pf->num_vmdq_qps = 0;
7361                 pf->num_lan_qps = 1;
7362                 pf->num_lan_msix = 1;
7363
7364         } else if (v_actual != v_budget) {
7365                 int vec;
7366
7367                 /* reserve the misc vector */
7368                 vec = v_actual - 1;
7369
7370                 /* Scale vector usage down */
7371                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7372                 pf->num_vmdq_vsis = 1;
7373                 pf->num_vmdq_qps = 1;
7374                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7375
7376                 /* partition out the remaining vectors */
7377                 switch (vec) {
7378                 case 2:
7379                         pf->num_lan_msix = 1;
7380                         break;
7381                 case 3:
7382 #ifdef I40E_FCOE
7383                         /* give one vector to FCoE */
7384                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7385                                 pf->num_lan_msix = 1;
7386                                 pf->num_fcoe_msix = 1;
7387                         }
7388 #else
7389                         pf->num_lan_msix = 2;
7390 #endif
7391                         break;
7392                 default:
7393 #ifdef I40E_FCOE
7394                         /* give one vector to FCoE */
7395                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7396                                 pf->num_fcoe_msix = 1;
7397                                 vec--;
7398                         }
7399 #endif
7400                         /* give the rest to the PF */
7401                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7402                         break;
7403                 }
7404         }
7405
7406         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7407             (pf->num_vmdq_msix == 0)) {
7408                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7409                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7410         }
7411 #ifdef I40E_FCOE
7412
7413         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7414                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7415                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7416         }
7417 #endif
7418         return v_actual;
7419 }
7420
7421 /**
7422  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7423  * @vsi: the VSI being configured
7424  * @v_idx: index of the vector in the vsi struct
7425  *
7426  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7427  **/
7428 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7429 {
7430         struct i40e_q_vector *q_vector;
7431
7432         /* allocate q_vector */
7433         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7434         if (!q_vector)
7435                 return -ENOMEM;
7436
7437         q_vector->vsi = vsi;
7438         q_vector->v_idx = v_idx;
7439         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7440         if (vsi->netdev)
7441                 netif_napi_add(vsi->netdev, &q_vector->napi,
7442                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7443
7444         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7445         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7446
7447         /* tie q_vector and vsi together */
7448         vsi->q_vectors[v_idx] = q_vector;
7449
7450         return 0;
7451 }
7452
7453 /**
7454  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7455  * @vsi: the VSI being configured
7456  *
7457  * We allocate one q_vector per queue interrupt.  If allocation fails we
7458  * return -ENOMEM.
7459  **/
7460 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7461 {
7462         struct i40e_pf *pf = vsi->back;
7463         int v_idx, num_q_vectors;
7464         int err;
7465
7466         /* if not MSIX, give the one vector only to the LAN VSI */
7467         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7468                 num_q_vectors = vsi->num_q_vectors;
7469         else if (vsi == pf->vsi[pf->lan_vsi])
7470                 num_q_vectors = 1;
7471         else
7472                 return -EINVAL;
7473
7474         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7475                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7476                 if (err)
7477                         goto err_out;
7478         }
7479
7480         return 0;
7481
7482 err_out:
7483         while (v_idx--)
7484                 i40e_free_q_vector(vsi, v_idx);
7485
7486         return err;
7487 }
7488
7489 /**
7490  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7491  * @pf: board private structure to initialize
7492  **/
7493 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7494 {
7495         int vectors = 0;
7496         ssize_t size;
7497
7498         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7499                 vectors = i40e_init_msix(pf);
7500                 if (vectors < 0) {
7501                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7502 #ifdef I40E_FCOE
7503                                        I40E_FLAG_FCOE_ENABLED   |
7504 #endif
7505                                        I40E_FLAG_RSS_ENABLED    |
7506                                        I40E_FLAG_DCB_CAPABLE    |
7507                                        I40E_FLAG_SRIOV_ENABLED  |
7508                                        I40E_FLAG_FD_SB_ENABLED  |
7509                                        I40E_FLAG_FD_ATR_ENABLED |
7510                                        I40E_FLAG_VMDQ_ENABLED);
7511
7512                         /* rework the queue expectations without MSIX */
7513                         i40e_determine_queue_usage(pf);
7514                 }
7515         }
7516
7517         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7518             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7519                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7520                 vectors = pci_enable_msi(pf->pdev);
7521                 if (vectors < 0) {
7522                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7523                                  vectors);
7524                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7525                 }
7526                 vectors = 1;  /* one MSI or Legacy vector */
7527         }
7528
7529         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7530                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7531
7532         /* set up vector assignment tracking */
7533         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7534         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7535         if (!pf->irq_pile) {
7536                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7537                 return -ENOMEM;
7538         }
7539         pf->irq_pile->num_entries = vectors;
7540         pf->irq_pile->search_hint = 0;
7541
7542         /* track first vector for misc interrupts, ignore return */
7543         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7544
7545         return 0;
7546 }
7547
7548 /**
7549  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7550  * @pf: board private structure
7551  *
7552  * This sets up the handler for MSIX 0, which is used to manage the
7553  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7554  * when in MSI or Legacy interrupt mode.
7555  **/
7556 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7557 {
7558         struct i40e_hw *hw = &pf->hw;
7559         int err = 0;
7560
7561         /* Only request the irq if this is the first time through, and
7562          * not when we're rebuilding after a Reset
7563          */
7564         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7565                 err = request_irq(pf->msix_entries[0].vector,
7566                                   i40e_intr, 0, pf->int_name, pf);
7567                 if (err) {
7568                         dev_info(&pf->pdev->dev,
7569                                  "request_irq for %s failed: %d\n",
7570                                  pf->int_name, err);
7571                         return -EFAULT;
7572                 }
7573         }
7574
7575         i40e_enable_misc_int_causes(pf);
7576
7577         /* associate no queues to the misc vector */
7578         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7579         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7580
7581         i40e_flush(hw);
7582
7583         i40e_irq_dynamic_enable_icr0(pf);
7584
7585         return err;
7586 }
7587
7588 /**
7589  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7590  * @vsi: vsi structure
7591  * @seed: RSS hash seed
7592  **/
7593 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7594 {
7595         struct i40e_aqc_get_set_rss_key_data rss_key;
7596         struct i40e_pf *pf = vsi->back;
7597         struct i40e_hw *hw = &pf->hw;
7598         bool pf_lut = false;
7599         u8 *rss_lut;
7600         int ret, i;
7601
7602         memset(&rss_key, 0, sizeof(rss_key));
7603         memcpy(&rss_key, seed, sizeof(rss_key));
7604
7605         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7606         if (!rss_lut)
7607                 return -ENOMEM;
7608
7609         /* Populate the LUT with max no. of queues in round robin fashion */
7610         for (i = 0; i < vsi->rss_table_size; i++)
7611                 rss_lut[i] = i % vsi->rss_size;
7612
7613         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7614         if (ret) {
7615                 dev_info(&pf->pdev->dev,
7616                          "Cannot set RSS key, err %s aq_err %s\n",
7617                          i40e_stat_str(&pf->hw, ret),
7618                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7619                 goto config_rss_aq_out;
7620         }
7621
7622         if (vsi->type == I40E_VSI_MAIN)
7623                 pf_lut = true;
7624
7625         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7626                                   vsi->rss_table_size);
7627         if (ret)
7628                 dev_info(&pf->pdev->dev,
7629                          "Cannot set RSS lut, err %s aq_err %s\n",
7630                          i40e_stat_str(&pf->hw, ret),
7631                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7632
7633 config_rss_aq_out:
7634         kfree(rss_lut);
7635         return ret;
7636 }
7637
7638 /**
7639  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7640  * @vsi: VSI structure
7641  **/
7642 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7643 {
7644         u8 seed[I40E_HKEY_ARRAY_SIZE];
7645         struct i40e_pf *pf = vsi->back;
7646
7647         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7648         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7649
7650         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7651                 return i40e_config_rss_aq(vsi, seed);
7652
7653         return 0;
7654 }
7655
7656 /**
7657  * i40e_config_rss_reg - Prepare for RSS if used
7658  * @pf: board private structure
7659  * @seed: RSS hash seed
7660  **/
7661 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7662 {
7663         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7664         struct i40e_hw *hw = &pf->hw;
7665         u32 *seed_dw = (u32 *)seed;
7666         u32 current_queue = 0;
7667         u32 lut = 0;
7668         int i, j;
7669
7670         /* Fill out hash function seed */
7671         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7672                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7673
7674         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7675                 lut = 0;
7676                 for (j = 0; j < 4; j++) {
7677                         if (current_queue == vsi->rss_size)
7678                                 current_queue = 0;
7679                         lut |= ((current_queue) << (8 * j));
7680                         current_queue++;
7681                 }
7682                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7683         }
7684         i40e_flush(hw);
7685
7686         return 0;
7687 }
7688
7689 /**
7690  * i40e_config_rss - Prepare for RSS if used
7691  * @pf: board private structure
7692  **/
7693 static int i40e_config_rss(struct i40e_pf *pf)
7694 {
7695         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7696         u8 seed[I40E_HKEY_ARRAY_SIZE];
7697         struct i40e_hw *hw = &pf->hw;
7698         u32 reg_val;
7699         u64 hena;
7700
7701         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7702
7703         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7704         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7705                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7706         hena |= i40e_pf_get_default_rss_hena(pf);
7707
7708         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7709         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7710
7711         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7712
7713         /* Determine the RSS table size based on the hardware capabilities */
7714         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7715         reg_val = (pf->rss_table_size == 512) ?
7716                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7717                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7718         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7719
7720         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7721                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7722         else
7723                 return i40e_config_rss_reg(pf, seed);
7724 }
7725
7726 /**
7727  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7728  * @pf: board private structure
7729  * @queue_count: the requested queue count for rss.
7730  *
7731  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7732  * count which may be different from the requested queue count.
7733  **/
7734 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7735 {
7736         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7737         int new_rss_size;
7738
7739         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7740                 return 0;
7741
7742         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7743
7744         if (queue_count != vsi->num_queue_pairs) {
7745                 vsi->req_queue_pairs = queue_count;
7746                 i40e_prep_for_reset(pf);
7747
7748                 pf->rss_size = new_rss_size;
7749
7750                 i40e_reset_and_rebuild(pf, true);
7751                 i40e_config_rss(pf);
7752         }
7753         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7754         return pf->rss_size;
7755 }
7756
7757 /**
7758  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7759  * @pf: board private structure
7760  **/
7761 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7762 {
7763         i40e_status status;
7764         bool min_valid, max_valid;
7765         u32 max_bw, min_bw;
7766
7767         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7768                                            &min_valid, &max_valid);
7769
7770         if (!status) {
7771                 if (min_valid)
7772                         pf->npar_min_bw = min_bw;
7773                 if (max_valid)
7774                         pf->npar_max_bw = max_bw;
7775         }
7776
7777         return status;
7778 }
7779
7780 /**
7781  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7782  * @pf: board private structure
7783  **/
7784 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7785 {
7786         struct i40e_aqc_configure_partition_bw_data bw_data;
7787         i40e_status status;
7788
7789         /* Set the valid bit for this PF */
7790         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7791         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7792         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7793
7794         /* Set the new bandwidths */
7795         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7796
7797         return status;
7798 }
7799
7800 /**
7801  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7802  * @pf: board private structure
7803  **/
7804 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7805 {
7806         /* Commit temporary BW setting to permanent NVM image */
7807         enum i40e_admin_queue_err last_aq_status;
7808         i40e_status ret;
7809         u16 nvm_word;
7810
7811         if (pf->hw.partition_id != 1) {
7812                 dev_info(&pf->pdev->dev,
7813                          "Commit BW only works on partition 1! This is partition %d",
7814                          pf->hw.partition_id);
7815                 ret = I40E_NOT_SUPPORTED;
7816                 goto bw_commit_out;
7817         }
7818
7819         /* Acquire NVM for read access */
7820         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7821         last_aq_status = pf->hw.aq.asq_last_status;
7822         if (ret) {
7823                 dev_info(&pf->pdev->dev,
7824                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7825                          i40e_stat_str(&pf->hw, ret),
7826                          i40e_aq_str(&pf->hw, last_aq_status));
7827                 goto bw_commit_out;
7828         }
7829
7830         /* Read word 0x10 of NVM - SW compatibility word 1 */
7831         ret = i40e_aq_read_nvm(&pf->hw,
7832                                I40E_SR_NVM_CONTROL_WORD,
7833                                0x10, sizeof(nvm_word), &nvm_word,
7834                                false, NULL);
7835         /* Save off last admin queue command status before releasing
7836          * the NVM
7837          */
7838         last_aq_status = pf->hw.aq.asq_last_status;
7839         i40e_release_nvm(&pf->hw);
7840         if (ret) {
7841                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7842                          i40e_stat_str(&pf->hw, ret),
7843                          i40e_aq_str(&pf->hw, last_aq_status));
7844                 goto bw_commit_out;
7845         }
7846
7847         /* Wait a bit for NVM release to complete */
7848         msleep(50);
7849
7850         /* Acquire NVM for write access */
7851         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7852         last_aq_status = pf->hw.aq.asq_last_status;
7853         if (ret) {
7854                 dev_info(&pf->pdev->dev,
7855                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7856                          i40e_stat_str(&pf->hw, ret),
7857                          i40e_aq_str(&pf->hw, last_aq_status));
7858                 goto bw_commit_out;
7859         }
7860         /* Write it back out unchanged to initiate update NVM,
7861          * which will force a write of the shadow (alt) RAM to
7862          * the NVM - thus storing the bandwidth values permanently.
7863          */
7864         ret = i40e_aq_update_nvm(&pf->hw,
7865                                  I40E_SR_NVM_CONTROL_WORD,
7866                                  0x10, sizeof(nvm_word),
7867                                  &nvm_word, true, NULL);
7868         /* Save off last admin queue command status before releasing
7869          * the NVM
7870          */
7871         last_aq_status = pf->hw.aq.asq_last_status;
7872         i40e_release_nvm(&pf->hw);
7873         if (ret)
7874                 dev_info(&pf->pdev->dev,
7875                          "BW settings NOT SAVED, err %s aq_err %s\n",
7876                          i40e_stat_str(&pf->hw, ret),
7877                          i40e_aq_str(&pf->hw, last_aq_status));
7878 bw_commit_out:
7879
7880         return ret;
7881 }
7882
7883 /**
7884  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7885  * @pf: board private structure to initialize
7886  *
7887  * i40e_sw_init initializes the Adapter private data structure.
7888  * Fields are initialized based on PCI device information and
7889  * OS network device settings (MTU size).
7890  **/
7891 static int i40e_sw_init(struct i40e_pf *pf)
7892 {
7893         int err = 0;
7894         int size;
7895
7896         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7897                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7898         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7899         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7900                 if (I40E_DEBUG_USER & debug)
7901                         pf->hw.debug_mask = debug;
7902                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7903                                                 I40E_DEFAULT_MSG_ENABLE);
7904         }
7905
7906         /* Set default capability flags */
7907         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7908                     I40E_FLAG_MSI_ENABLED     |
7909                     I40E_FLAG_MSIX_ENABLED;
7910
7911         if (iommu_present(&pci_bus_type))
7912                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7913         else
7914                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7915
7916         /* Set default ITR */
7917         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7918         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7919
7920         /* Depending on PF configurations, it is possible that the RSS
7921          * maximum might end up larger than the available queues
7922          */
7923         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7924         pf->rss_size = 1;
7925         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7926         pf->rss_size_max = min_t(int, pf->rss_size_max,
7927                                  pf->hw.func_caps.num_tx_qp);
7928         if (pf->hw.func_caps.rss) {
7929                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7930                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7931         }
7932
7933         /* MFP mode enabled */
7934         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7935                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7936                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7937                 if (i40e_get_npar_bw_setting(pf))
7938                         dev_warn(&pf->pdev->dev,
7939                                  "Could not get NPAR bw settings\n");
7940                 else
7941                         dev_info(&pf->pdev->dev,
7942                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7943                                  pf->npar_min_bw, pf->npar_max_bw);
7944         }
7945
7946         /* FW/NVM is not yet fixed in this regard */
7947         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7948             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7949                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7950                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7951                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7952                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7953                 } else {
7954                         dev_info(&pf->pdev->dev,
7955                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7956                 }
7957                 pf->fdir_pf_filter_count =
7958                                  pf->hw.func_caps.fd_filters_guaranteed;
7959                 pf->hw.fdir_shared_filter_count =
7960                                  pf->hw.func_caps.fd_filters_best_effort;
7961         }
7962
7963         if (pf->hw.func_caps.vmdq) {
7964                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7965                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7966         }
7967
7968 #ifdef I40E_FCOE
7969         i40e_init_pf_fcoe(pf);
7970
7971 #endif /* I40E_FCOE */
7972 #ifdef CONFIG_PCI_IOV
7973         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7974                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7975                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7976                 pf->num_req_vfs = min_t(int,
7977                                         pf->hw.func_caps.num_vfs,
7978                                         I40E_MAX_VF_COUNT);
7979         }
7980 #endif /* CONFIG_PCI_IOV */
7981         if (pf->hw.mac.type == I40E_MAC_X722) {
7982                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7983                              I40E_FLAG_128_QP_RSS_CAPABLE |
7984                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7985                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7986                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7987                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7988         }
7989         pf->eeprom_version = 0xDEAD;
7990         pf->lan_veb = I40E_NO_VEB;
7991         pf->lan_vsi = I40E_NO_VSI;
7992
7993         /* By default FW has this off for performance reasons */
7994         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7995
7996         /* set up queue assignment tracking */
7997         size = sizeof(struct i40e_lump_tracking)
7998                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7999         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8000         if (!pf->qp_pile) {
8001                 err = -ENOMEM;
8002                 goto sw_init_done;
8003         }
8004         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8005         pf->qp_pile->search_hint = 0;
8006
8007         pf->tx_timeout_recovery_level = 1;
8008
8009         mutex_init(&pf->switch_mutex);
8010
8011         /* If NPAR is enabled nudge the Tx scheduler */
8012         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8013                 i40e_set_npar_bw_setting(pf);
8014
8015 sw_init_done:
8016         return err;
8017 }
8018
8019 /**
8020  * i40e_set_ntuple - set the ntuple feature flag and take action
8021  * @pf: board private structure to initialize
8022  * @features: the feature set that the stack is suggesting
8023  *
8024  * returns a bool to indicate if reset needs to happen
8025  **/
8026 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8027 {
8028         bool need_reset = false;
8029
8030         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8031          * the state changed, we need to reset.
8032          */
8033         if (features & NETIF_F_NTUPLE) {
8034                 /* Enable filters and mark for reset */
8035                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8036                         need_reset = true;
8037                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8038         } else {
8039                 /* turn off filters, mark for reset and clear SW filter list */
8040                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8041                         need_reset = true;
8042                         i40e_fdir_filter_exit(pf);
8043                 }
8044                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8045                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8046                 /* reset fd counters */
8047                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8048                 pf->fdir_pf_active_filters = 0;
8049                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8050                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8051                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8052                 /* if ATR was auto disabled it can be re-enabled. */
8053                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8054                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8055                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8056         }
8057         return need_reset;
8058 }
8059
8060 /**
8061  * i40e_set_features - set the netdev feature flags
8062  * @netdev: ptr to the netdev being adjusted
8063  * @features: the feature set that the stack is suggesting
8064  **/
8065 static int i40e_set_features(struct net_device *netdev,
8066                              netdev_features_t features)
8067 {
8068         struct i40e_netdev_priv *np = netdev_priv(netdev);
8069         struct i40e_vsi *vsi = np->vsi;
8070         struct i40e_pf *pf = vsi->back;
8071         bool need_reset;
8072
8073         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8074                 i40e_vlan_stripping_enable(vsi);
8075         else
8076                 i40e_vlan_stripping_disable(vsi);
8077
8078         need_reset = i40e_set_ntuple(pf, features);
8079
8080         if (need_reset)
8081                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8082
8083         return 0;
8084 }
8085
8086 #ifdef CONFIG_I40E_VXLAN
8087 /**
8088  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8089  * @pf: board private structure
8090  * @port: The UDP port to look up
8091  *
8092  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8093  **/
8094 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8095 {
8096         u8 i;
8097
8098         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8099                 if (pf->vxlan_ports[i] == port)
8100                         return i;
8101         }
8102
8103         return i;
8104 }
8105
8106 /**
8107  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8108  * @netdev: This physical port's netdev
8109  * @sa_family: Socket Family that VXLAN is notifying us about
8110  * @port: New UDP port number that VXLAN started listening to
8111  **/
8112 static void i40e_add_vxlan_port(struct net_device *netdev,
8113                                 sa_family_t sa_family, __be16 port)
8114 {
8115         struct i40e_netdev_priv *np = netdev_priv(netdev);
8116         struct i40e_vsi *vsi = np->vsi;
8117         struct i40e_pf *pf = vsi->back;
8118         u8 next_idx;
8119         u8 idx;
8120
8121         if (sa_family == AF_INET6)
8122                 return;
8123
8124         idx = i40e_get_vxlan_port_idx(pf, port);
8125
8126         /* Check if port already exists */
8127         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8128                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8129                             ntohs(port));
8130                 return;
8131         }
8132
8133         /* Now check if there is space to add the new port */
8134         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8135
8136         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8137                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8138                             ntohs(port));
8139                 return;
8140         }
8141
8142         /* New port: add it and mark its index in the bitmap */
8143         pf->vxlan_ports[next_idx] = port;
8144         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8145         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8146 }
8147
8148 /**
8149  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8150  * @netdev: This physical port's netdev
8151  * @sa_family: Socket Family that VXLAN is notifying us about
8152  * @port: UDP port number that VXLAN stopped listening to
8153  **/
8154 static void i40e_del_vxlan_port(struct net_device *netdev,
8155                                 sa_family_t sa_family, __be16 port)
8156 {
8157         struct i40e_netdev_priv *np = netdev_priv(netdev);
8158         struct i40e_vsi *vsi = np->vsi;
8159         struct i40e_pf *pf = vsi->back;
8160         u8 idx;
8161
8162         if (sa_family == AF_INET6)
8163                 return;
8164
8165         idx = i40e_get_vxlan_port_idx(pf, port);
8166
8167         /* Check if port already exists */
8168         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8169                 /* if port exists, set it to 0 (mark for deletion)
8170                  * and make it pending
8171                  */
8172                 pf->vxlan_ports[idx] = 0;
8173                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8174                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8175         } else {
8176                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8177                             ntohs(port));
8178         }
8179 }
8180
8181 #endif
8182 static int i40e_get_phys_port_id(struct net_device *netdev,
8183                                  struct netdev_phys_item_id *ppid)
8184 {
8185         struct i40e_netdev_priv *np = netdev_priv(netdev);
8186         struct i40e_pf *pf = np->vsi->back;
8187         struct i40e_hw *hw = &pf->hw;
8188
8189         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8190                 return -EOPNOTSUPP;
8191
8192         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8193         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8194
8195         return 0;
8196 }
8197
8198 /**
8199  * i40e_ndo_fdb_add - add an entry to the hardware database
8200  * @ndm: the input from the stack
8201  * @tb: pointer to array of nladdr (unused)
8202  * @dev: the net device pointer
8203  * @addr: the MAC address entry being added
8204  * @flags: instructions from stack about fdb operation
8205  */
8206 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8207                             struct net_device *dev,
8208                             const unsigned char *addr, u16 vid,
8209                             u16 flags)
8210 {
8211         struct i40e_netdev_priv *np = netdev_priv(dev);
8212         struct i40e_pf *pf = np->vsi->back;
8213         int err = 0;
8214
8215         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8216                 return -EOPNOTSUPP;
8217
8218         if (vid) {
8219                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8220                 return -EINVAL;
8221         }
8222
8223         /* Hardware does not support aging addresses so if a
8224          * ndm_state is given only allow permanent addresses
8225          */
8226         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8227                 netdev_info(dev, "FDB only supports static addresses\n");
8228                 return -EINVAL;
8229         }
8230
8231         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8232                 err = dev_uc_add_excl(dev, addr);
8233         else if (is_multicast_ether_addr(addr))
8234                 err = dev_mc_add_excl(dev, addr);
8235         else
8236                 err = -EINVAL;
8237
8238         /* Only return duplicate errors if NLM_F_EXCL is set */
8239         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8240                 err = 0;
8241
8242         return err;
8243 }
8244
8245 /**
8246  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8247  * @dev: the netdev being configured
8248  * @nlh: RTNL message
8249  *
8250  * Inserts a new hardware bridge if not already created and
8251  * enables the bridging mode requested (VEB or VEPA). If the
8252  * hardware bridge has already been inserted and the request
8253  * is to change the mode then that requires a PF reset to
8254  * allow rebuild of the components with required hardware
8255  * bridge mode enabled.
8256  **/
8257 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8258                                    struct nlmsghdr *nlh,
8259                                    u16 flags)
8260 {
8261         struct i40e_netdev_priv *np = netdev_priv(dev);
8262         struct i40e_vsi *vsi = np->vsi;
8263         struct i40e_pf *pf = vsi->back;
8264         struct i40e_veb *veb = NULL;
8265         struct nlattr *attr, *br_spec;
8266         int i, rem;
8267
8268         /* Only for PF VSI for now */
8269         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8270                 return -EOPNOTSUPP;
8271
8272         /* Find the HW bridge for PF VSI */
8273         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8274                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8275                         veb = pf->veb[i];
8276         }
8277
8278         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8279
8280         nla_for_each_nested(attr, br_spec, rem) {
8281                 __u16 mode;
8282
8283                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8284                         continue;
8285
8286                 mode = nla_get_u16(attr);
8287                 if ((mode != BRIDGE_MODE_VEPA) &&
8288                     (mode != BRIDGE_MODE_VEB))
8289                         return -EINVAL;
8290
8291                 /* Insert a new HW bridge */
8292                 if (!veb) {
8293                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8294                                              vsi->tc_config.enabled_tc);
8295                         if (veb) {
8296                                 veb->bridge_mode = mode;
8297                                 i40e_config_bridge_mode(veb);
8298                         } else {
8299                                 /* No Bridge HW offload available */
8300                                 return -ENOENT;
8301                         }
8302                         break;
8303                 } else if (mode != veb->bridge_mode) {
8304                         /* Existing HW bridge but different mode needs reset */
8305                         veb->bridge_mode = mode;
8306                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8307                         if (mode == BRIDGE_MODE_VEB)
8308                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8309                         else
8310                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8311                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8312                         break;
8313                 }
8314         }
8315
8316         return 0;
8317 }
8318
8319 /**
8320  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8321  * @skb: skb buff
8322  * @pid: process id
8323  * @seq: RTNL message seq #
8324  * @dev: the netdev being configured
8325  * @filter_mask: unused
8326  *
8327  * Return the mode in which the hardware bridge is operating in
8328  * i.e VEB or VEPA.
8329  **/
8330 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8331                                    struct net_device *dev,
8332                                    u32 filter_mask, int nlflags)
8333 {
8334         struct i40e_netdev_priv *np = netdev_priv(dev);
8335         struct i40e_vsi *vsi = np->vsi;
8336         struct i40e_pf *pf = vsi->back;
8337         struct i40e_veb *veb = NULL;
8338         int i;
8339
8340         /* Only for PF VSI for now */
8341         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8342                 return -EOPNOTSUPP;
8343
8344         /* Find the HW bridge for the PF VSI */
8345         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8346                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8347                         veb = pf->veb[i];
8348         }
8349
8350         if (!veb)
8351                 return 0;
8352
8353         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8354                                        nlflags, 0, 0, filter_mask, NULL);
8355 }
8356
8357 #define I40E_MAX_TUNNEL_HDR_LEN 80
8358 /**
8359  * i40e_features_check - Validate encapsulated packet conforms to limits
8360  * @skb: skb buff
8361  * @netdev: This physical port's netdev
8362  * @features: Offload features that the stack believes apply
8363  **/
8364 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8365                                              struct net_device *dev,
8366                                              netdev_features_t features)
8367 {
8368         if (skb->encapsulation &&
8369             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8370              I40E_MAX_TUNNEL_HDR_LEN))
8371                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8372
8373         return features;
8374 }
8375
8376 static const struct net_device_ops i40e_netdev_ops = {
8377         .ndo_open               = i40e_open,
8378         .ndo_stop               = i40e_close,
8379         .ndo_start_xmit         = i40e_lan_xmit_frame,
8380         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8381         .ndo_set_rx_mode        = i40e_set_rx_mode,
8382         .ndo_validate_addr      = eth_validate_addr,
8383         .ndo_set_mac_address    = i40e_set_mac,
8384         .ndo_change_mtu         = i40e_change_mtu,
8385         .ndo_do_ioctl           = i40e_ioctl,
8386         .ndo_tx_timeout         = i40e_tx_timeout,
8387         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8388         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8389 #ifdef CONFIG_NET_POLL_CONTROLLER
8390         .ndo_poll_controller    = i40e_netpoll,
8391 #endif
8392         .ndo_setup_tc           = i40e_setup_tc,
8393 #ifdef I40E_FCOE
8394         .ndo_fcoe_enable        = i40e_fcoe_enable,
8395         .ndo_fcoe_disable       = i40e_fcoe_disable,
8396 #endif
8397         .ndo_set_features       = i40e_set_features,
8398         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8399         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8400         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8401         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8402         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8403         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8404 #ifdef CONFIG_I40E_VXLAN
8405         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8406         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8407 #endif
8408         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8409         .ndo_fdb_add            = i40e_ndo_fdb_add,
8410         .ndo_features_check     = i40e_features_check,
8411         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8412         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8413 };
8414
8415 /**
8416  * i40e_config_netdev - Setup the netdev flags
8417  * @vsi: the VSI being configured
8418  *
8419  * Returns 0 on success, negative value on failure
8420  **/
8421 static int i40e_config_netdev(struct i40e_vsi *vsi)
8422 {
8423         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8424         struct i40e_pf *pf = vsi->back;
8425         struct i40e_hw *hw = &pf->hw;
8426         struct i40e_netdev_priv *np;
8427         struct net_device *netdev;
8428         u8 mac_addr[ETH_ALEN];
8429         int etherdev_size;
8430
8431         etherdev_size = sizeof(struct i40e_netdev_priv);
8432         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8433         if (!netdev)
8434                 return -ENOMEM;
8435
8436         vsi->netdev = netdev;
8437         np = netdev_priv(netdev);
8438         np->vsi = vsi;
8439
8440         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8441                                   NETIF_F_GSO_UDP_TUNNEL |
8442                                   NETIF_F_TSO;
8443
8444         netdev->features = NETIF_F_SG                  |
8445                            NETIF_F_IP_CSUM             |
8446                            NETIF_F_SCTP_CSUM           |
8447                            NETIF_F_HIGHDMA             |
8448                            NETIF_F_GSO_UDP_TUNNEL      |
8449                            NETIF_F_HW_VLAN_CTAG_TX     |
8450                            NETIF_F_HW_VLAN_CTAG_RX     |
8451                            NETIF_F_HW_VLAN_CTAG_FILTER |
8452                            NETIF_F_IPV6_CSUM           |
8453                            NETIF_F_TSO                 |
8454                            NETIF_F_TSO_ECN             |
8455                            NETIF_F_TSO6                |
8456                            NETIF_F_RXCSUM              |
8457                            NETIF_F_RXHASH              |
8458                            0;
8459
8460         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8461                 netdev->features |= NETIF_F_NTUPLE;
8462
8463         /* copy netdev features into list of user selectable features */
8464         netdev->hw_features |= netdev->features;
8465
8466         if (vsi->type == I40E_VSI_MAIN) {
8467                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8468                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8469                 /* The following steps are necessary to prevent reception
8470                  * of tagged packets - some older NVM configurations load a
8471                  * default a MAC-VLAN filter that accepts any tagged packet
8472                  * which must be replaced by a normal filter.
8473                  */
8474                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8475                         i40e_add_filter(vsi, mac_addr,
8476                                         I40E_VLAN_ANY, false, true);
8477         } else {
8478                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8479                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8480                          pf->vsi[pf->lan_vsi]->netdev->name);
8481                 random_ether_addr(mac_addr);
8482                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8483         }
8484         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8485
8486         ether_addr_copy(netdev->dev_addr, mac_addr);
8487         ether_addr_copy(netdev->perm_addr, mac_addr);
8488         /* vlan gets same features (except vlan offload)
8489          * after any tweaks for specific VSI types
8490          */
8491         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8492                                                      NETIF_F_HW_VLAN_CTAG_RX |
8493                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8494         netdev->priv_flags |= IFF_UNICAST_FLT;
8495         netdev->priv_flags |= IFF_SUPP_NOFCS;
8496         /* Setup netdev TC information */
8497         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8498
8499         netdev->netdev_ops = &i40e_netdev_ops;
8500         netdev->watchdog_timeo = 5 * HZ;
8501         i40e_set_ethtool_ops(netdev);
8502 #ifdef I40E_FCOE
8503         i40e_fcoe_config_netdev(netdev, vsi);
8504 #endif
8505
8506         return 0;
8507 }
8508
8509 /**
8510  * i40e_vsi_delete - Delete a VSI from the switch
8511  * @vsi: the VSI being removed
8512  *
8513  * Returns 0 on success, negative value on failure
8514  **/
8515 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8516 {
8517         /* remove default VSI is not allowed */
8518         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8519                 return;
8520
8521         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8522 }
8523
8524 /**
8525  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8526  * @vsi: the VSI being queried
8527  *
8528  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8529  **/
8530 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8531 {
8532         struct i40e_veb *veb;
8533         struct i40e_pf *pf = vsi->back;
8534
8535         /* Uplink is not a bridge so default to VEB */
8536         if (vsi->veb_idx == I40E_NO_VEB)
8537                 return 1;
8538
8539         veb = pf->veb[vsi->veb_idx];
8540         /* Uplink is a bridge in VEPA mode */
8541         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8542                 return 0;
8543
8544         /* Uplink is a bridge in VEB mode */
8545         return 1;
8546 }
8547
8548 /**
8549  * i40e_add_vsi - Add a VSI to the switch
8550  * @vsi: the VSI being configured
8551  *
8552  * This initializes a VSI context depending on the VSI type to be added and
8553  * passes it down to the add_vsi aq command.
8554  **/
8555 static int i40e_add_vsi(struct i40e_vsi *vsi)
8556 {
8557         int ret = -ENODEV;
8558         struct i40e_mac_filter *f, *ftmp;
8559         struct i40e_pf *pf = vsi->back;
8560         struct i40e_hw *hw = &pf->hw;
8561         struct i40e_vsi_context ctxt;
8562         u8 enabled_tc = 0x1; /* TC0 enabled */
8563         int f_count = 0;
8564
8565         memset(&ctxt, 0, sizeof(ctxt));
8566         switch (vsi->type) {
8567         case I40E_VSI_MAIN:
8568                 /* The PF's main VSI is already setup as part of the
8569                  * device initialization, so we'll not bother with
8570                  * the add_vsi call, but we will retrieve the current
8571                  * VSI context.
8572                  */
8573                 ctxt.seid = pf->main_vsi_seid;
8574                 ctxt.pf_num = pf->hw.pf_id;
8575                 ctxt.vf_num = 0;
8576                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8577                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8578                 if (ret) {
8579                         dev_info(&pf->pdev->dev,
8580                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8581                                  i40e_stat_str(&pf->hw, ret),
8582                                  i40e_aq_str(&pf->hw,
8583                                              pf->hw.aq.asq_last_status));
8584                         return -ENOENT;
8585                 }
8586                 vsi->info = ctxt.info;
8587                 vsi->info.valid_sections = 0;
8588
8589                 vsi->seid = ctxt.seid;
8590                 vsi->id = ctxt.vsi_number;
8591
8592                 enabled_tc = i40e_pf_get_tc_map(pf);
8593
8594                 /* MFP mode setup queue map and update VSI */
8595                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8596                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8597                         memset(&ctxt, 0, sizeof(ctxt));
8598                         ctxt.seid = pf->main_vsi_seid;
8599                         ctxt.pf_num = pf->hw.pf_id;
8600                         ctxt.vf_num = 0;
8601                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8602                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8603                         if (ret) {
8604                                 dev_info(&pf->pdev->dev,
8605                                          "update vsi failed, err %s aq_err %s\n",
8606                                          i40e_stat_str(&pf->hw, ret),
8607                                          i40e_aq_str(&pf->hw,
8608                                                     pf->hw.aq.asq_last_status));
8609                                 ret = -ENOENT;
8610                                 goto err;
8611                         }
8612                         /* update the local VSI info queue map */
8613                         i40e_vsi_update_queue_map(vsi, &ctxt);
8614                         vsi->info.valid_sections = 0;
8615                 } else {
8616                         /* Default/Main VSI is only enabled for TC0
8617                          * reconfigure it to enable all TCs that are
8618                          * available on the port in SFP mode.
8619                          * For MFP case the iSCSI PF would use this
8620                          * flow to enable LAN+iSCSI TC.
8621                          */
8622                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8623                         if (ret) {
8624                                 dev_info(&pf->pdev->dev,
8625                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8626                                          enabled_tc,
8627                                          i40e_stat_str(&pf->hw, ret),
8628                                          i40e_aq_str(&pf->hw,
8629                                                     pf->hw.aq.asq_last_status));
8630                                 ret = -ENOENT;
8631                         }
8632                 }
8633                 break;
8634
8635         case I40E_VSI_FDIR:
8636                 ctxt.pf_num = hw->pf_id;
8637                 ctxt.vf_num = 0;
8638                 ctxt.uplink_seid = vsi->uplink_seid;
8639                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8640                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8641                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8642                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8643                         ctxt.info.valid_sections |=
8644                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8645                         ctxt.info.switch_id =
8646                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8647                 }
8648                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8649                 break;
8650
8651         case I40E_VSI_VMDQ2:
8652                 ctxt.pf_num = hw->pf_id;
8653                 ctxt.vf_num = 0;
8654                 ctxt.uplink_seid = vsi->uplink_seid;
8655                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8656                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8657
8658                 /* This VSI is connected to VEB so the switch_id
8659                  * should be set to zero by default.
8660                  */
8661                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8662                         ctxt.info.valid_sections |=
8663                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8664                         ctxt.info.switch_id =
8665                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8666                 }
8667
8668                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8669                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8670                 break;
8671
8672         case I40E_VSI_SRIOV:
8673                 ctxt.pf_num = hw->pf_id;
8674                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8675                 ctxt.uplink_seid = vsi->uplink_seid;
8676                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8677                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8678
8679                 /* This VSI is connected to VEB so the switch_id
8680                  * should be set to zero by default.
8681                  */
8682                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8683                         ctxt.info.valid_sections |=
8684                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8685                         ctxt.info.switch_id =
8686                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8687                 }
8688
8689                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8690                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8691                 if (pf->vf[vsi->vf_id].spoofchk) {
8692                         ctxt.info.valid_sections |=
8693                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8694                         ctxt.info.sec_flags |=
8695                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8696                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8697                 }
8698                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8699                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8700                 break;
8701
8702 #ifdef I40E_FCOE
8703         case I40E_VSI_FCOE:
8704                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8705                 if (ret) {
8706                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8707                         return ret;
8708                 }
8709                 break;
8710
8711 #endif /* I40E_FCOE */
8712         default:
8713                 return -ENODEV;
8714         }
8715
8716         if (vsi->type != I40E_VSI_MAIN) {
8717                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8718                 if (ret) {
8719                         dev_info(&vsi->back->pdev->dev,
8720                                  "add vsi failed, err %s aq_err %s\n",
8721                                  i40e_stat_str(&pf->hw, ret),
8722                                  i40e_aq_str(&pf->hw,
8723                                              pf->hw.aq.asq_last_status));
8724                         ret = -ENOENT;
8725                         goto err;
8726                 }
8727                 vsi->info = ctxt.info;
8728                 vsi->info.valid_sections = 0;
8729                 vsi->seid = ctxt.seid;
8730                 vsi->id = ctxt.vsi_number;
8731         }
8732
8733         /* If macvlan filters already exist, force them to get loaded */
8734         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8735                 f->changed = true;
8736                 f_count++;
8737
8738                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8739                         struct i40e_aqc_remove_macvlan_element_data element;
8740
8741                         memset(&element, 0, sizeof(element));
8742                         ether_addr_copy(element.mac_addr, f->macaddr);
8743                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8744                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8745                                                      &element, 1, NULL);
8746                         if (ret) {
8747                                 /* some older FW has a different default */
8748                                 element.flags |=
8749                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8750                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8751                                                        &element, 1, NULL);
8752                         }
8753
8754                         i40e_aq_mac_address_write(hw,
8755                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8756                                                   f->macaddr, NULL);
8757                 }
8758         }
8759         if (f_count) {
8760                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8761                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8762         }
8763
8764         /* Update VSI BW information */
8765         ret = i40e_vsi_get_bw_info(vsi);
8766         if (ret) {
8767                 dev_info(&pf->pdev->dev,
8768                          "couldn't get vsi bw info, err %s aq_err %s\n",
8769                          i40e_stat_str(&pf->hw, ret),
8770                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8771                 /* VSI is already added so not tearing that up */
8772                 ret = 0;
8773         }
8774
8775 err:
8776         return ret;
8777 }
8778
8779 /**
8780  * i40e_vsi_release - Delete a VSI and free its resources
8781  * @vsi: the VSI being removed
8782  *
8783  * Returns 0 on success or < 0 on error
8784  **/
8785 int i40e_vsi_release(struct i40e_vsi *vsi)
8786 {
8787         struct i40e_mac_filter *f, *ftmp;
8788         struct i40e_veb *veb = NULL;
8789         struct i40e_pf *pf;
8790         u16 uplink_seid;
8791         int i, n;
8792
8793         pf = vsi->back;
8794
8795         /* release of a VEB-owner or last VSI is not allowed */
8796         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8797                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8798                          vsi->seid, vsi->uplink_seid);
8799                 return -ENODEV;
8800         }
8801         if (vsi == pf->vsi[pf->lan_vsi] &&
8802             !test_bit(__I40E_DOWN, &pf->state)) {
8803                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8804                 return -ENODEV;
8805         }
8806
8807         uplink_seid = vsi->uplink_seid;
8808         if (vsi->type != I40E_VSI_SRIOV) {
8809                 if (vsi->netdev_registered) {
8810                         vsi->netdev_registered = false;
8811                         if (vsi->netdev) {
8812                                 /* results in a call to i40e_close() */
8813                                 unregister_netdev(vsi->netdev);
8814                         }
8815                 } else {
8816                         i40e_vsi_close(vsi);
8817                 }
8818                 i40e_vsi_disable_irq(vsi);
8819         }
8820
8821         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8822                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8823                                 f->is_vf, f->is_netdev);
8824         i40e_sync_vsi_filters(vsi, false);
8825
8826         i40e_vsi_delete(vsi);
8827         i40e_vsi_free_q_vectors(vsi);
8828         if (vsi->netdev) {
8829                 free_netdev(vsi->netdev);
8830                 vsi->netdev = NULL;
8831         }
8832         i40e_vsi_clear_rings(vsi);
8833         i40e_vsi_clear(vsi);
8834
8835         /* If this was the last thing on the VEB, except for the
8836          * controlling VSI, remove the VEB, which puts the controlling
8837          * VSI onto the next level down in the switch.
8838          *
8839          * Well, okay, there's one more exception here: don't remove
8840          * the orphan VEBs yet.  We'll wait for an explicit remove request
8841          * from up the network stack.
8842          */
8843         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8844                 if (pf->vsi[i] &&
8845                     pf->vsi[i]->uplink_seid == uplink_seid &&
8846                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8847                         n++;      /* count the VSIs */
8848                 }
8849         }
8850         for (i = 0; i < I40E_MAX_VEB; i++) {
8851                 if (!pf->veb[i])
8852                         continue;
8853                 if (pf->veb[i]->uplink_seid == uplink_seid)
8854                         n++;     /* count the VEBs */
8855                 if (pf->veb[i]->seid == uplink_seid)
8856                         veb = pf->veb[i];
8857         }
8858         if (n == 0 && veb && veb->uplink_seid != 0)
8859                 i40e_veb_release(veb);
8860
8861         return 0;
8862 }
8863
8864 /**
8865  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8866  * @vsi: ptr to the VSI
8867  *
8868  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8869  * corresponding SW VSI structure and initializes num_queue_pairs for the
8870  * newly allocated VSI.
8871  *
8872  * Returns 0 on success or negative on failure
8873  **/
8874 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8875 {
8876         int ret = -ENOENT;
8877         struct i40e_pf *pf = vsi->back;
8878
8879         if (vsi->q_vectors[0]) {
8880                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8881                          vsi->seid);
8882                 return -EEXIST;
8883         }
8884
8885         if (vsi->base_vector) {
8886                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8887                          vsi->seid, vsi->base_vector);
8888                 return -EEXIST;
8889         }
8890
8891         ret = i40e_vsi_alloc_q_vectors(vsi);
8892         if (ret) {
8893                 dev_info(&pf->pdev->dev,
8894                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8895                          vsi->num_q_vectors, vsi->seid, ret);
8896                 vsi->num_q_vectors = 0;
8897                 goto vector_setup_out;
8898         }
8899
8900         /* In Legacy mode, we do not have to get any other vector since we
8901          * piggyback on the misc/ICR0 for queue interrupts.
8902         */
8903         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8904                 return ret;
8905         if (vsi->num_q_vectors)
8906                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8907                                                  vsi->num_q_vectors, vsi->idx);
8908         if (vsi->base_vector < 0) {
8909                 dev_info(&pf->pdev->dev,
8910                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8911                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8912                 i40e_vsi_free_q_vectors(vsi);
8913                 ret = -ENOENT;
8914                 goto vector_setup_out;
8915         }
8916
8917 vector_setup_out:
8918         return ret;
8919 }
8920
8921 /**
8922  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8923  * @vsi: pointer to the vsi.
8924  *
8925  * This re-allocates a vsi's queue resources.
8926  *
8927  * Returns pointer to the successfully allocated and configured VSI sw struct
8928  * on success, otherwise returns NULL on failure.
8929  **/
8930 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8931 {
8932         struct i40e_pf *pf = vsi->back;
8933         u8 enabled_tc;
8934         int ret;
8935
8936         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8937         i40e_vsi_clear_rings(vsi);
8938
8939         i40e_vsi_free_arrays(vsi, false);
8940         i40e_set_num_rings_in_vsi(vsi);
8941         ret = i40e_vsi_alloc_arrays(vsi, false);
8942         if (ret)
8943                 goto err_vsi;
8944
8945         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8946         if (ret < 0) {
8947                 dev_info(&pf->pdev->dev,
8948                          "failed to get tracking for %d queues for VSI %d err %d\n",
8949                          vsi->alloc_queue_pairs, vsi->seid, ret);
8950                 goto err_vsi;
8951         }
8952         vsi->base_queue = ret;
8953
8954         /* Update the FW view of the VSI. Force a reset of TC and queue
8955          * layout configurations.
8956          */
8957         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8958         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8959         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8960         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8961
8962         /* assign it some queues */
8963         ret = i40e_alloc_rings(vsi);
8964         if (ret)
8965                 goto err_rings;
8966
8967         /* map all of the rings to the q_vectors */
8968         i40e_vsi_map_rings_to_vectors(vsi);
8969         return vsi;
8970
8971 err_rings:
8972         i40e_vsi_free_q_vectors(vsi);
8973         if (vsi->netdev_registered) {
8974                 vsi->netdev_registered = false;
8975                 unregister_netdev(vsi->netdev);
8976                 free_netdev(vsi->netdev);
8977                 vsi->netdev = NULL;
8978         }
8979         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8980 err_vsi:
8981         i40e_vsi_clear(vsi);
8982         return NULL;
8983 }
8984
8985 /**
8986  * i40e_vsi_setup - Set up a VSI by a given type
8987  * @pf: board private structure
8988  * @type: VSI type
8989  * @uplink_seid: the switch element to link to
8990  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8991  *
8992  * This allocates the sw VSI structure and its queue resources, then add a VSI
8993  * to the identified VEB.
8994  *
8995  * Returns pointer to the successfully allocated and configure VSI sw struct on
8996  * success, otherwise returns NULL on failure.
8997  **/
8998 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8999                                 u16 uplink_seid, u32 param1)
9000 {
9001         struct i40e_vsi *vsi = NULL;
9002         struct i40e_veb *veb = NULL;
9003         int ret, i;
9004         int v_idx;
9005
9006         /* The requested uplink_seid must be either
9007          *     - the PF's port seid
9008          *              no VEB is needed because this is the PF
9009          *              or this is a Flow Director special case VSI
9010          *     - seid of an existing VEB
9011          *     - seid of a VSI that owns an existing VEB
9012          *     - seid of a VSI that doesn't own a VEB
9013          *              a new VEB is created and the VSI becomes the owner
9014          *     - seid of the PF VSI, which is what creates the first VEB
9015          *              this is a special case of the previous
9016          *
9017          * Find which uplink_seid we were given and create a new VEB if needed
9018          */
9019         for (i = 0; i < I40E_MAX_VEB; i++) {
9020                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9021                         veb = pf->veb[i];
9022                         break;
9023                 }
9024         }
9025
9026         if (!veb && uplink_seid != pf->mac_seid) {
9027
9028                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9029                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9030                                 vsi = pf->vsi[i];
9031                                 break;
9032                         }
9033                 }
9034                 if (!vsi) {
9035                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9036                                  uplink_seid);
9037                         return NULL;
9038                 }
9039
9040                 if (vsi->uplink_seid == pf->mac_seid)
9041                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9042                                              vsi->tc_config.enabled_tc);
9043                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9044                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9045                                              vsi->tc_config.enabled_tc);
9046                 if (veb) {
9047                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9048                                 dev_info(&vsi->back->pdev->dev,
9049                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9050                                 return NULL;
9051                         }
9052                         /* We come up by default in VEPA mode if SRIOV is not
9053                          * already enabled, in which case we can't force VEPA
9054                          * mode.
9055                          */
9056                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9057                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9058                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9059                         }
9060                         i40e_config_bridge_mode(veb);
9061                 }
9062                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9063                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9064                                 veb = pf->veb[i];
9065                 }
9066                 if (!veb) {
9067                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9068                         return NULL;
9069                 }
9070
9071                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9072                 uplink_seid = veb->seid;
9073         }
9074
9075         /* get vsi sw struct */
9076         v_idx = i40e_vsi_mem_alloc(pf, type);
9077         if (v_idx < 0)
9078                 goto err_alloc;
9079         vsi = pf->vsi[v_idx];
9080         if (!vsi)
9081                 goto err_alloc;
9082         vsi->type = type;
9083         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9084
9085         if (type == I40E_VSI_MAIN)
9086                 pf->lan_vsi = v_idx;
9087         else if (type == I40E_VSI_SRIOV)
9088                 vsi->vf_id = param1;
9089         /* assign it some queues */
9090         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9091                                 vsi->idx);
9092         if (ret < 0) {
9093                 dev_info(&pf->pdev->dev,
9094                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9095                          vsi->alloc_queue_pairs, vsi->seid, ret);
9096                 goto err_vsi;
9097         }
9098         vsi->base_queue = ret;
9099
9100         /* get a VSI from the hardware */
9101         vsi->uplink_seid = uplink_seid;
9102         ret = i40e_add_vsi(vsi);
9103         if (ret)
9104                 goto err_vsi;
9105
9106         switch (vsi->type) {
9107         /* setup the netdev if needed */
9108         case I40E_VSI_MAIN:
9109         case I40E_VSI_VMDQ2:
9110         case I40E_VSI_FCOE:
9111                 ret = i40e_config_netdev(vsi);
9112                 if (ret)
9113                         goto err_netdev;
9114                 ret = register_netdev(vsi->netdev);
9115                 if (ret)
9116                         goto err_netdev;
9117                 vsi->netdev_registered = true;
9118                 netif_carrier_off(vsi->netdev);
9119 #ifdef CONFIG_I40E_DCB
9120                 /* Setup DCB netlink interface */
9121                 i40e_dcbnl_setup(vsi);
9122 #endif /* CONFIG_I40E_DCB */
9123                 /* fall through */
9124
9125         case I40E_VSI_FDIR:
9126                 /* set up vectors and rings if needed */
9127                 ret = i40e_vsi_setup_vectors(vsi);
9128                 if (ret)
9129                         goto err_msix;
9130
9131                 ret = i40e_alloc_rings(vsi);
9132                 if (ret)
9133                         goto err_rings;
9134
9135                 /* map all of the rings to the q_vectors */
9136                 i40e_vsi_map_rings_to_vectors(vsi);
9137
9138                 i40e_vsi_reset_stats(vsi);
9139                 break;
9140
9141         default:
9142                 /* no netdev or rings for the other VSI types */
9143                 break;
9144         }
9145
9146         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9147             (vsi->type == I40E_VSI_VMDQ2)) {
9148                 ret = i40e_vsi_config_rss(vsi);
9149         }
9150         return vsi;
9151
9152 err_rings:
9153         i40e_vsi_free_q_vectors(vsi);
9154 err_msix:
9155         if (vsi->netdev_registered) {
9156                 vsi->netdev_registered = false;
9157                 unregister_netdev(vsi->netdev);
9158                 free_netdev(vsi->netdev);
9159                 vsi->netdev = NULL;
9160         }
9161 err_netdev:
9162         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9163 err_vsi:
9164         i40e_vsi_clear(vsi);
9165 err_alloc:
9166         return NULL;
9167 }
9168
9169 /**
9170  * i40e_veb_get_bw_info - Query VEB BW information
9171  * @veb: the veb to query
9172  *
9173  * Query the Tx scheduler BW configuration data for given VEB
9174  **/
9175 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9176 {
9177         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9178         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9179         struct i40e_pf *pf = veb->pf;
9180         struct i40e_hw *hw = &pf->hw;
9181         u32 tc_bw_max;
9182         int ret = 0;
9183         int i;
9184
9185         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9186                                                   &bw_data, NULL);
9187         if (ret) {
9188                 dev_info(&pf->pdev->dev,
9189                          "query veb bw config failed, err %s aq_err %s\n",
9190                          i40e_stat_str(&pf->hw, ret),
9191                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9192                 goto out;
9193         }
9194
9195         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9196                                                    &ets_data, NULL);
9197         if (ret) {
9198                 dev_info(&pf->pdev->dev,
9199                          "query veb bw ets config failed, err %s aq_err %s\n",
9200                          i40e_stat_str(&pf->hw, ret),
9201                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9202                 goto out;
9203         }
9204
9205         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9206         veb->bw_max_quanta = ets_data.tc_bw_max;
9207         veb->is_abs_credits = bw_data.absolute_credits_enable;
9208         veb->enabled_tc = ets_data.tc_valid_bits;
9209         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9210                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9211         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9212                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9213                 veb->bw_tc_limit_credits[i] =
9214                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9215                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9216         }
9217
9218 out:
9219         return ret;
9220 }
9221
9222 /**
9223  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9224  * @pf: board private structure
9225  *
9226  * On error: returns error code (negative)
9227  * On success: returns vsi index in PF (positive)
9228  **/
9229 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9230 {
9231         int ret = -ENOENT;
9232         struct i40e_veb *veb;
9233         int i;
9234
9235         /* Need to protect the allocation of switch elements at the PF level */
9236         mutex_lock(&pf->switch_mutex);
9237
9238         /* VEB list may be fragmented if VEB creation/destruction has
9239          * been happening.  We can afford to do a quick scan to look
9240          * for any free slots in the list.
9241          *
9242          * find next empty veb slot, looping back around if necessary
9243          */
9244         i = 0;
9245         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9246                 i++;
9247         if (i >= I40E_MAX_VEB) {
9248                 ret = -ENOMEM;
9249                 goto err_alloc_veb;  /* out of VEB slots! */
9250         }
9251
9252         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9253         if (!veb) {
9254                 ret = -ENOMEM;
9255                 goto err_alloc_veb;
9256         }
9257         veb->pf = pf;
9258         veb->idx = i;
9259         veb->enabled_tc = 1;
9260
9261         pf->veb[i] = veb;
9262         ret = i;
9263 err_alloc_veb:
9264         mutex_unlock(&pf->switch_mutex);
9265         return ret;
9266 }
9267
9268 /**
9269  * i40e_switch_branch_release - Delete a branch of the switch tree
9270  * @branch: where to start deleting
9271  *
9272  * This uses recursion to find the tips of the branch to be
9273  * removed, deleting until we get back to and can delete this VEB.
9274  **/
9275 static void i40e_switch_branch_release(struct i40e_veb *branch)
9276 {
9277         struct i40e_pf *pf = branch->pf;
9278         u16 branch_seid = branch->seid;
9279         u16 veb_idx = branch->idx;
9280         int i;
9281
9282         /* release any VEBs on this VEB - RECURSION */
9283         for (i = 0; i < I40E_MAX_VEB; i++) {
9284                 if (!pf->veb[i])
9285                         continue;
9286                 if (pf->veb[i]->uplink_seid == branch->seid)
9287                         i40e_switch_branch_release(pf->veb[i]);
9288         }
9289
9290         /* Release the VSIs on this VEB, but not the owner VSI.
9291          *
9292          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9293          *       the VEB itself, so don't use (*branch) after this loop.
9294          */
9295         for (i = 0; i < pf->num_alloc_vsi; i++) {
9296                 if (!pf->vsi[i])
9297                         continue;
9298                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9299                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9300                         i40e_vsi_release(pf->vsi[i]);
9301                 }
9302         }
9303
9304         /* There's one corner case where the VEB might not have been
9305          * removed, so double check it here and remove it if needed.
9306          * This case happens if the veb was created from the debugfs
9307          * commands and no VSIs were added to it.
9308          */
9309         if (pf->veb[veb_idx])
9310                 i40e_veb_release(pf->veb[veb_idx]);
9311 }
9312
9313 /**
9314  * i40e_veb_clear - remove veb struct
9315  * @veb: the veb to remove
9316  **/
9317 static void i40e_veb_clear(struct i40e_veb *veb)
9318 {
9319         if (!veb)
9320                 return;
9321
9322         if (veb->pf) {
9323                 struct i40e_pf *pf = veb->pf;
9324
9325                 mutex_lock(&pf->switch_mutex);
9326                 if (pf->veb[veb->idx] == veb)
9327                         pf->veb[veb->idx] = NULL;
9328                 mutex_unlock(&pf->switch_mutex);
9329         }
9330
9331         kfree(veb);
9332 }
9333
9334 /**
9335  * i40e_veb_release - Delete a VEB and free its resources
9336  * @veb: the VEB being removed
9337  **/
9338 void i40e_veb_release(struct i40e_veb *veb)
9339 {
9340         struct i40e_vsi *vsi = NULL;
9341         struct i40e_pf *pf;
9342         int i, n = 0;
9343
9344         pf = veb->pf;
9345
9346         /* find the remaining VSI and check for extras */
9347         for (i = 0; i < pf->num_alloc_vsi; i++) {
9348                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9349                         n++;
9350                         vsi = pf->vsi[i];
9351                 }
9352         }
9353         if (n != 1) {
9354                 dev_info(&pf->pdev->dev,
9355                          "can't remove VEB %d with %d VSIs left\n",
9356                          veb->seid, n);
9357                 return;
9358         }
9359
9360         /* move the remaining VSI to uplink veb */
9361         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9362         if (veb->uplink_seid) {
9363                 vsi->uplink_seid = veb->uplink_seid;
9364                 if (veb->uplink_seid == pf->mac_seid)
9365                         vsi->veb_idx = I40E_NO_VEB;
9366                 else
9367                         vsi->veb_idx = veb->veb_idx;
9368         } else {
9369                 /* floating VEB */
9370                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9371                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9372         }
9373
9374         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9375         i40e_veb_clear(veb);
9376 }
9377
9378 /**
9379  * i40e_add_veb - create the VEB in the switch
9380  * @veb: the VEB to be instantiated
9381  * @vsi: the controlling VSI
9382  **/
9383 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9384 {
9385         struct i40e_pf *pf = veb->pf;
9386         bool is_default = veb->pf->cur_promisc;
9387         bool is_cloud = false;
9388         int ret;
9389
9390         /* get a VEB from the hardware */
9391         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9392                               veb->enabled_tc, is_default,
9393                               is_cloud, &veb->seid, NULL);
9394         if (ret) {
9395                 dev_info(&pf->pdev->dev,
9396                          "couldn't add VEB, err %s aq_err %s\n",
9397                          i40e_stat_str(&pf->hw, ret),
9398                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9399                 return -EPERM;
9400         }
9401
9402         /* get statistics counter */
9403         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9404                                          &veb->stats_idx, NULL, NULL, NULL);
9405         if (ret) {
9406                 dev_info(&pf->pdev->dev,
9407                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9408                          i40e_stat_str(&pf->hw, ret),
9409                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9410                 return -EPERM;
9411         }
9412         ret = i40e_veb_get_bw_info(veb);
9413         if (ret) {
9414                 dev_info(&pf->pdev->dev,
9415                          "couldn't get VEB bw info, err %s aq_err %s\n",
9416                          i40e_stat_str(&pf->hw, ret),
9417                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9418                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9419                 return -ENOENT;
9420         }
9421
9422         vsi->uplink_seid = veb->seid;
9423         vsi->veb_idx = veb->idx;
9424         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9425
9426         return 0;
9427 }
9428
9429 /**
9430  * i40e_veb_setup - Set up a VEB
9431  * @pf: board private structure
9432  * @flags: VEB setup flags
9433  * @uplink_seid: the switch element to link to
9434  * @vsi_seid: the initial VSI seid
9435  * @enabled_tc: Enabled TC bit-map
9436  *
9437  * This allocates the sw VEB structure and links it into the switch
9438  * It is possible and legal for this to be a duplicate of an already
9439  * existing VEB.  It is also possible for both uplink and vsi seids
9440  * to be zero, in order to create a floating VEB.
9441  *
9442  * Returns pointer to the successfully allocated VEB sw struct on
9443  * success, otherwise returns NULL on failure.
9444  **/
9445 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9446                                 u16 uplink_seid, u16 vsi_seid,
9447                                 u8 enabled_tc)
9448 {
9449         struct i40e_veb *veb, *uplink_veb = NULL;
9450         int vsi_idx, veb_idx;
9451         int ret;
9452
9453         /* if one seid is 0, the other must be 0 to create a floating relay */
9454         if ((uplink_seid == 0 || vsi_seid == 0) &&
9455             (uplink_seid + vsi_seid != 0)) {
9456                 dev_info(&pf->pdev->dev,
9457                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9458                          uplink_seid, vsi_seid);
9459                 return NULL;
9460         }
9461
9462         /* make sure there is such a vsi and uplink */
9463         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9464                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9465                         break;
9466         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9467                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9468                          vsi_seid);
9469                 return NULL;
9470         }
9471
9472         if (uplink_seid && uplink_seid != pf->mac_seid) {
9473                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9474                         if (pf->veb[veb_idx] &&
9475                             pf->veb[veb_idx]->seid == uplink_seid) {
9476                                 uplink_veb = pf->veb[veb_idx];
9477                                 break;
9478                         }
9479                 }
9480                 if (!uplink_veb) {
9481                         dev_info(&pf->pdev->dev,
9482                                  "uplink seid %d not found\n", uplink_seid);
9483                         return NULL;
9484                 }
9485         }
9486
9487         /* get veb sw struct */
9488         veb_idx = i40e_veb_mem_alloc(pf);
9489         if (veb_idx < 0)
9490                 goto err_alloc;
9491         veb = pf->veb[veb_idx];
9492         veb->flags = flags;
9493         veb->uplink_seid = uplink_seid;
9494         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9495         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9496
9497         /* create the VEB in the switch */
9498         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9499         if (ret)
9500                 goto err_veb;
9501         if (vsi_idx == pf->lan_vsi)
9502                 pf->lan_veb = veb->idx;
9503
9504         return veb;
9505
9506 err_veb:
9507         i40e_veb_clear(veb);
9508 err_alloc:
9509         return NULL;
9510 }
9511
9512 /**
9513  * i40e_setup_pf_switch_element - set PF vars based on switch type
9514  * @pf: board private structure
9515  * @ele: element we are building info from
9516  * @num_reported: total number of elements
9517  * @printconfig: should we print the contents
9518  *
9519  * helper function to assist in extracting a few useful SEID values.
9520  **/
9521 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9522                                 struct i40e_aqc_switch_config_element_resp *ele,
9523                                 u16 num_reported, bool printconfig)
9524 {
9525         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9526         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9527         u8 element_type = ele->element_type;
9528         u16 seid = le16_to_cpu(ele->seid);
9529
9530         if (printconfig)
9531                 dev_info(&pf->pdev->dev,
9532                          "type=%d seid=%d uplink=%d downlink=%d\n",
9533                          element_type, seid, uplink_seid, downlink_seid);
9534
9535         switch (element_type) {
9536         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9537                 pf->mac_seid = seid;
9538                 break;
9539         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9540                 /* Main VEB? */
9541                 if (uplink_seid != pf->mac_seid)
9542                         break;
9543                 if (pf->lan_veb == I40E_NO_VEB) {
9544                         int v;
9545
9546                         /* find existing or else empty VEB */
9547                         for (v = 0; v < I40E_MAX_VEB; v++) {
9548                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9549                                         pf->lan_veb = v;
9550                                         break;
9551                                 }
9552                         }
9553                         if (pf->lan_veb == I40E_NO_VEB) {
9554                                 v = i40e_veb_mem_alloc(pf);
9555                                 if (v < 0)
9556                                         break;
9557                                 pf->lan_veb = v;
9558                         }
9559                 }
9560
9561                 pf->veb[pf->lan_veb]->seid = seid;
9562                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9563                 pf->veb[pf->lan_veb]->pf = pf;
9564                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9565                 break;
9566         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9567                 if (num_reported != 1)
9568                         break;
9569                 /* This is immediately after a reset so we can assume this is
9570                  * the PF's VSI
9571                  */
9572                 pf->mac_seid = uplink_seid;
9573                 pf->pf_seid = downlink_seid;
9574                 pf->main_vsi_seid = seid;
9575                 if (printconfig)
9576                         dev_info(&pf->pdev->dev,
9577                                  "pf_seid=%d main_vsi_seid=%d\n",
9578                                  pf->pf_seid, pf->main_vsi_seid);
9579                 break;
9580         case I40E_SWITCH_ELEMENT_TYPE_PF:
9581         case I40E_SWITCH_ELEMENT_TYPE_VF:
9582         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9583         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9584         case I40E_SWITCH_ELEMENT_TYPE_PE:
9585         case I40E_SWITCH_ELEMENT_TYPE_PA:
9586                 /* ignore these for now */
9587                 break;
9588         default:
9589                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9590                          element_type, seid);
9591                 break;
9592         }
9593 }
9594
9595 /**
9596  * i40e_fetch_switch_configuration - Get switch config from firmware
9597  * @pf: board private structure
9598  * @printconfig: should we print the contents
9599  *
9600  * Get the current switch configuration from the device and
9601  * extract a few useful SEID values.
9602  **/
9603 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9604 {
9605         struct i40e_aqc_get_switch_config_resp *sw_config;
9606         u16 next_seid = 0;
9607         int ret = 0;
9608         u8 *aq_buf;
9609         int i;
9610
9611         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9612         if (!aq_buf)
9613                 return -ENOMEM;
9614
9615         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9616         do {
9617                 u16 num_reported, num_total;
9618
9619                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9620                                                 I40E_AQ_LARGE_BUF,
9621                                                 &next_seid, NULL);
9622                 if (ret) {
9623                         dev_info(&pf->pdev->dev,
9624                                  "get switch config failed err %s aq_err %s\n",
9625                                  i40e_stat_str(&pf->hw, ret),
9626                                  i40e_aq_str(&pf->hw,
9627                                              pf->hw.aq.asq_last_status));
9628                         kfree(aq_buf);
9629                         return -ENOENT;
9630                 }
9631
9632                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9633                 num_total = le16_to_cpu(sw_config->header.num_total);
9634
9635                 if (printconfig)
9636                         dev_info(&pf->pdev->dev,
9637                                  "header: %d reported %d total\n",
9638                                  num_reported, num_total);
9639
9640                 for (i = 0; i < num_reported; i++) {
9641                         struct i40e_aqc_switch_config_element_resp *ele =
9642                                 &sw_config->element[i];
9643
9644                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9645                                                      printconfig);
9646                 }
9647         } while (next_seid != 0);
9648
9649         kfree(aq_buf);
9650         return ret;
9651 }
9652
9653 /**
9654  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9655  * @pf: board private structure
9656  * @reinit: if the Main VSI needs to re-initialized.
9657  *
9658  * Returns 0 on success, negative value on failure
9659  **/
9660 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9661 {
9662         int ret;
9663
9664         /* find out what's out there already */
9665         ret = i40e_fetch_switch_configuration(pf, false);
9666         if (ret) {
9667                 dev_info(&pf->pdev->dev,
9668                          "couldn't fetch switch config, err %s aq_err %s\n",
9669                          i40e_stat_str(&pf->hw, ret),
9670                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9671                 return ret;
9672         }
9673         i40e_pf_reset_stats(pf);
9674
9675         /* first time setup */
9676         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9677                 struct i40e_vsi *vsi = NULL;
9678                 u16 uplink_seid;
9679
9680                 /* Set up the PF VSI associated with the PF's main VSI
9681                  * that is already in the HW switch
9682                  */
9683                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9684                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9685                 else
9686                         uplink_seid = pf->mac_seid;
9687                 if (pf->lan_vsi == I40E_NO_VSI)
9688                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9689                 else if (reinit)
9690                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9691                 if (!vsi) {
9692                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9693                         i40e_fdir_teardown(pf);
9694                         return -EAGAIN;
9695                 }
9696         } else {
9697                 /* force a reset of TC and queue layout configurations */
9698                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9699                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9700                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9701                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9702         }
9703         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9704
9705         i40e_fdir_sb_setup(pf);
9706
9707         /* Setup static PF queue filter control settings */
9708         ret = i40e_setup_pf_filter_control(pf);
9709         if (ret) {
9710                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9711                          ret);
9712                 /* Failure here should not stop continuing other steps */
9713         }
9714
9715         /* enable RSS in the HW, even for only one queue, as the stack can use
9716          * the hash
9717          */
9718         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9719                 i40e_config_rss(pf);
9720
9721         /* fill in link information and enable LSE reporting */
9722         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9723         i40e_link_event(pf);
9724
9725         /* Initialize user-specific link properties */
9726         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9727                                   I40E_AQ_AN_COMPLETED) ? true : false);
9728
9729         i40e_ptp_init(pf);
9730
9731         return ret;
9732 }
9733
9734 /**
9735  * i40e_determine_queue_usage - Work out queue distribution
9736  * @pf: board private structure
9737  **/
9738 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9739 {
9740         int queues_left;
9741
9742         pf->num_lan_qps = 0;
9743 #ifdef I40E_FCOE
9744         pf->num_fcoe_qps = 0;
9745 #endif
9746
9747         /* Find the max queues to be put into basic use.  We'll always be
9748          * using TC0, whether or not DCB is running, and TC0 will get the
9749          * big RSS set.
9750          */
9751         queues_left = pf->hw.func_caps.num_tx_qp;
9752
9753         if ((queues_left == 1) ||
9754             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9755                 /* one qp for PF, no queues for anything else */
9756                 queues_left = 0;
9757                 pf->rss_size = pf->num_lan_qps = 1;
9758
9759                 /* make sure all the fancies are disabled */
9760                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9761 #ifdef I40E_FCOE
9762                                I40E_FLAG_FCOE_ENABLED   |
9763 #endif
9764                                I40E_FLAG_FD_SB_ENABLED  |
9765                                I40E_FLAG_FD_ATR_ENABLED |
9766                                I40E_FLAG_DCB_CAPABLE    |
9767                                I40E_FLAG_SRIOV_ENABLED  |
9768                                I40E_FLAG_VMDQ_ENABLED);
9769         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9770                                   I40E_FLAG_FD_SB_ENABLED |
9771                                   I40E_FLAG_FD_ATR_ENABLED |
9772                                   I40E_FLAG_DCB_CAPABLE))) {
9773                 /* one qp for PF */
9774                 pf->rss_size = pf->num_lan_qps = 1;
9775                 queues_left -= pf->num_lan_qps;
9776
9777                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9778 #ifdef I40E_FCOE
9779                                I40E_FLAG_FCOE_ENABLED   |
9780 #endif
9781                                I40E_FLAG_FD_SB_ENABLED  |
9782                                I40E_FLAG_FD_ATR_ENABLED |
9783                                I40E_FLAG_DCB_ENABLED    |
9784                                I40E_FLAG_VMDQ_ENABLED);
9785         } else {
9786                 /* Not enough queues for all TCs */
9787                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9788                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9789                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9790                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9791                 }
9792                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9793                                         num_online_cpus());
9794                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9795                                         pf->hw.func_caps.num_tx_qp);
9796
9797                 queues_left -= pf->num_lan_qps;
9798         }
9799
9800 #ifdef I40E_FCOE
9801         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9802                 if (I40E_DEFAULT_FCOE <= queues_left) {
9803                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9804                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9805                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9806                 } else {
9807                         pf->num_fcoe_qps = 0;
9808                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9809                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9810                 }
9811
9812                 queues_left -= pf->num_fcoe_qps;
9813         }
9814
9815 #endif
9816         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9817                 if (queues_left > 1) {
9818                         queues_left -= 1; /* save 1 queue for FD */
9819                 } else {
9820                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9821                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9822                 }
9823         }
9824
9825         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9826             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9827                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9828                                         (queues_left / pf->num_vf_qps));
9829                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9830         }
9831
9832         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9833             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9834                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9835                                           (queues_left / pf->num_vmdq_qps));
9836                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9837         }
9838
9839         pf->queues_left = queues_left;
9840 #ifdef I40E_FCOE
9841         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9842 #endif
9843 }
9844
9845 /**
9846  * i40e_setup_pf_filter_control - Setup PF static filter control
9847  * @pf: PF to be setup
9848  *
9849  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9850  * settings. If PE/FCoE are enabled then it will also set the per PF
9851  * based filter sizes required for them. It also enables Flow director,
9852  * ethertype and macvlan type filter settings for the pf.
9853  *
9854  * Returns 0 on success, negative on failure
9855  **/
9856 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9857 {
9858         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9859
9860         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9861
9862         /* Flow Director is enabled */
9863         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9864                 settings->enable_fdir = true;
9865
9866         /* Ethtype and MACVLAN filters enabled for PF */
9867         settings->enable_ethtype = true;
9868         settings->enable_macvlan = true;
9869
9870         if (i40e_set_filter_control(&pf->hw, settings))
9871                 return -ENOENT;
9872
9873         return 0;
9874 }
9875
9876 #define INFO_STRING_LEN 255
9877 static void i40e_print_features(struct i40e_pf *pf)
9878 {
9879         struct i40e_hw *hw = &pf->hw;
9880         char *buf, *string;
9881
9882         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9883         if (!string) {
9884                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9885                 return;
9886         }
9887
9888         buf = string;
9889
9890         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9891 #ifdef CONFIG_PCI_IOV
9892         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9893 #endif
9894         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9895                        pf->hw.func_caps.num_vsis,
9896                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9897                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9898
9899         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9900                 buf += sprintf(buf, "RSS ");
9901         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9902                 buf += sprintf(buf, "FD_ATR ");
9903         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9904                 buf += sprintf(buf, "FD_SB ");
9905                 buf += sprintf(buf, "NTUPLE ");
9906         }
9907         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9908                 buf += sprintf(buf, "DCB ");
9909         if (pf->flags & I40E_FLAG_PTP)
9910                 buf += sprintf(buf, "PTP ");
9911 #ifdef I40E_FCOE
9912         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9913                 buf += sprintf(buf, "FCOE ");
9914 #endif
9915
9916         BUG_ON(buf > (string + INFO_STRING_LEN));
9917         dev_info(&pf->pdev->dev, "%s\n", string);
9918         kfree(string);
9919 }
9920
9921 /**
9922  * i40e_probe - Device initialization routine
9923  * @pdev: PCI device information struct
9924  * @ent: entry in i40e_pci_tbl
9925  *
9926  * i40e_probe initializes a PF identified by a pci_dev structure.
9927  * The OS initialization, configuring of the PF private structure,
9928  * and a hardware reset occur.
9929  *
9930  * Returns 0 on success, negative on failure
9931  **/
9932 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9933 {
9934         struct i40e_aq_get_phy_abilities_resp abilities;
9935         struct i40e_pf *pf;
9936         struct i40e_hw *hw;
9937         static u16 pfs_found;
9938         u16 wol_nvm_bits;
9939         u16 link_status;
9940         int err = 0;
9941         u32 len;
9942         u32 i;
9943
9944         err = pci_enable_device_mem(pdev);
9945         if (err)
9946                 return err;
9947
9948         /* set up for high or low dma */
9949         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9950         if (err) {
9951                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9952                 if (err) {
9953                         dev_err(&pdev->dev,
9954                                 "DMA configuration failed: 0x%x\n", err);
9955                         goto err_dma;
9956                 }
9957         }
9958
9959         /* set up pci connections */
9960         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9961                                            IORESOURCE_MEM), i40e_driver_name);
9962         if (err) {
9963                 dev_info(&pdev->dev,
9964                          "pci_request_selected_regions failed %d\n", err);
9965                 goto err_pci_reg;
9966         }
9967
9968         pci_enable_pcie_error_reporting(pdev);
9969         pci_set_master(pdev);
9970
9971         /* Now that we have a PCI connection, we need to do the
9972          * low level device setup.  This is primarily setting up
9973          * the Admin Queue structures and then querying for the
9974          * device's current profile information.
9975          */
9976         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9977         if (!pf) {
9978                 err = -ENOMEM;
9979                 goto err_pf_alloc;
9980         }
9981         pf->next_vsi = 0;
9982         pf->pdev = pdev;
9983         set_bit(__I40E_DOWN, &pf->state);
9984
9985         hw = &pf->hw;
9986         hw->back = pf;
9987
9988         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
9989                                 I40E_MAX_CSR_SPACE);
9990
9991         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
9992         if (!hw->hw_addr) {
9993                 err = -EIO;
9994                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9995                          (unsigned int)pci_resource_start(pdev, 0),
9996                          pf->ioremap_len, err);
9997                 goto err_ioremap;
9998         }
9999         hw->vendor_id = pdev->vendor;
10000         hw->device_id = pdev->device;
10001         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10002         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10003         hw->subsystem_device_id = pdev->subsystem_device;
10004         hw->bus.device = PCI_SLOT(pdev->devfn);
10005         hw->bus.func = PCI_FUNC(pdev->devfn);
10006         pf->instance = pfs_found;
10007
10008         if (debug != -1) {
10009                 pf->msg_enable = pf->hw.debug_mask;
10010                 pf->msg_enable = debug;
10011         }
10012
10013         /* do a special CORER for clearing PXE mode once at init */
10014         if (hw->revision_id == 0 &&
10015             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10016                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10017                 i40e_flush(hw);
10018                 msleep(200);
10019                 pf->corer_count++;
10020
10021                 i40e_clear_pxe_mode(hw);
10022         }
10023
10024         /* Reset here to make sure all is clean and to define PF 'n' */
10025         i40e_clear_hw(hw);
10026         err = i40e_pf_reset(hw);
10027         if (err) {
10028                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10029                 goto err_pf_reset;
10030         }
10031         pf->pfr_count++;
10032
10033         hw->aq.num_arq_entries = I40E_AQ_LEN;
10034         hw->aq.num_asq_entries = I40E_AQ_LEN;
10035         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10036         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10037         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10038
10039         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10040                  "%s-%s:misc",
10041                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10042
10043         err = i40e_init_shared_code(hw);
10044         if (err) {
10045                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10046                          err);
10047                 goto err_pf_reset;
10048         }
10049
10050         /* set up a default setting for link flow control */
10051         pf->hw.fc.requested_mode = I40E_FC_NONE;
10052
10053         err = i40e_init_adminq(hw);
10054         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10055         if (err) {
10056                 dev_info(&pdev->dev,
10057                          "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");
10058                 goto err_pf_reset;
10059         }
10060
10061         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10062             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10063                 dev_info(&pdev->dev,
10064                          "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");
10065         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10066                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10067                 dev_info(&pdev->dev,
10068                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10069
10070         i40e_verify_eeprom(pf);
10071
10072         /* Rev 0 hardware was never productized */
10073         if (hw->revision_id < 1)
10074                 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");
10075
10076         i40e_clear_pxe_mode(hw);
10077         err = i40e_get_capabilities(pf);
10078         if (err)
10079                 goto err_adminq_setup;
10080
10081         err = i40e_sw_init(pf);
10082         if (err) {
10083                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10084                 goto err_sw_init;
10085         }
10086
10087         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10088                                 hw->func_caps.num_rx_qp,
10089                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10090         if (err) {
10091                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10092                 goto err_init_lan_hmc;
10093         }
10094
10095         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10096         if (err) {
10097                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10098                 err = -ENOENT;
10099                 goto err_configure_lan_hmc;
10100         }
10101
10102         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10103          * Ignore error return codes because if it was already disabled via
10104          * hardware settings this will fail
10105          */
10106         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10107             (pf->hw.aq.fw_maj_ver < 4)) {
10108                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10109                 i40e_aq_stop_lldp(hw, true, NULL);
10110         }
10111
10112         i40e_get_mac_addr(hw, hw->mac.addr);
10113         if (!is_valid_ether_addr(hw->mac.addr)) {
10114                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10115                 err = -EIO;
10116                 goto err_mac_addr;
10117         }
10118         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10119         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10120         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10121         if (is_valid_ether_addr(hw->mac.port_addr))
10122                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10123 #ifdef I40E_FCOE
10124         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10125         if (err)
10126                 dev_info(&pdev->dev,
10127                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10128         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10129                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10130                          hw->mac.san_addr);
10131                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10132         }
10133         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10134 #endif /* I40E_FCOE */
10135
10136         pci_set_drvdata(pdev, pf);
10137         pci_save_state(pdev);
10138 #ifdef CONFIG_I40E_DCB
10139         err = i40e_init_pf_dcb(pf);
10140         if (err) {
10141                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10142                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10143                 /* Continue without DCB enabled */
10144         }
10145 #endif /* CONFIG_I40E_DCB */
10146
10147         /* set up periodic task facility */
10148         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10149         pf->service_timer_period = HZ;
10150
10151         INIT_WORK(&pf->service_task, i40e_service_task);
10152         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10153         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10154
10155         /* NVM bit on means WoL disabled for the port */
10156         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10157         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10158                 pf->wol_en = false;
10159         else
10160                 pf->wol_en = true;
10161         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10162
10163         /* set up the main switch operations */
10164         i40e_determine_queue_usage(pf);
10165         err = i40e_init_interrupt_scheme(pf);
10166         if (err)
10167                 goto err_switch_setup;
10168
10169         /* The number of VSIs reported by the FW is the minimum guaranteed
10170          * to us; HW supports far more and we share the remaining pool with
10171          * the other PFs. We allocate space for more than the guarantee with
10172          * the understanding that we might not get them all later.
10173          */
10174         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10175                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10176         else
10177                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10178
10179         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10180         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10181         pf->vsi = kzalloc(len, GFP_KERNEL);
10182         if (!pf->vsi) {
10183                 err = -ENOMEM;
10184                 goto err_switch_setup;
10185         }
10186
10187 #ifdef CONFIG_PCI_IOV
10188         /* prep for VF support */
10189         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10190             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10191             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10192                 if (pci_num_vf(pdev))
10193                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10194         }
10195 #endif
10196         err = i40e_setup_pf_switch(pf, false);
10197         if (err) {
10198                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10199                 goto err_vsis;
10200         }
10201         /* if FDIR VSI was set up, start it now */
10202         for (i = 0; i < pf->num_alloc_vsi; i++) {
10203                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10204                         i40e_vsi_open(pf->vsi[i]);
10205                         break;
10206                 }
10207         }
10208
10209         /* driver is only interested in link up/down and module qualification
10210          * reports from firmware
10211          */
10212         err = i40e_aq_set_phy_int_mask(&pf->hw,
10213                                        I40E_AQ_EVENT_LINK_UPDOWN |
10214                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10215         if (err)
10216                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10217                          i40e_stat_str(&pf->hw, err),
10218                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10219
10220         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10221             (pf->hw.aq.fw_maj_ver < 4)) {
10222                 msleep(75);
10223                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10224                 if (err)
10225                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10226                                  i40e_stat_str(&pf->hw, err),
10227                                  i40e_aq_str(&pf->hw,
10228                                              pf->hw.aq.asq_last_status));
10229         }
10230         /* The main driver is (mostly) up and happy. We need to set this state
10231          * before setting up the misc vector or we get a race and the vector
10232          * ends up disabled forever.
10233          */
10234         clear_bit(__I40E_DOWN, &pf->state);
10235
10236         /* In case of MSIX we are going to setup the misc vector right here
10237          * to handle admin queue events etc. In case of legacy and MSI
10238          * the misc functionality and queue processing is combined in
10239          * the same vector and that gets setup at open.
10240          */
10241         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10242                 err = i40e_setup_misc_vector(pf);
10243                 if (err) {
10244                         dev_info(&pdev->dev,
10245                                  "setup of misc vector failed: %d\n", err);
10246                         goto err_vsis;
10247                 }
10248         }
10249
10250 #ifdef CONFIG_PCI_IOV
10251         /* prep for VF support */
10252         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10253             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10254             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10255                 u32 val;
10256
10257                 /* disable link interrupts for VFs */
10258                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10259                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10260                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10261                 i40e_flush(hw);
10262
10263                 if (pci_num_vf(pdev)) {
10264                         dev_info(&pdev->dev,
10265                                  "Active VFs found, allocating resources.\n");
10266                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10267                         if (err)
10268                                 dev_info(&pdev->dev,
10269                                          "Error %d allocating resources for existing VFs\n",
10270                                          err);
10271                 }
10272         }
10273 #endif /* CONFIG_PCI_IOV */
10274
10275         pfs_found++;
10276
10277         i40e_dbg_pf_init(pf);
10278
10279         /* tell the firmware that we're starting */
10280         i40e_send_version(pf);
10281
10282         /* since everything's happy, start the service_task timer */
10283         mod_timer(&pf->service_timer,
10284                   round_jiffies(jiffies + pf->service_timer_period));
10285
10286 #ifdef I40E_FCOE
10287         /* create FCoE interface */
10288         i40e_fcoe_vsi_setup(pf);
10289
10290 #endif
10291         /* Get the negotiated link width and speed from PCI config space */
10292         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10293
10294         i40e_set_pci_config_data(hw, link_status);
10295
10296         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10297                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10298                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10299                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10300                  "Unknown"),
10301                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10302                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10303                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10304                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10305                  "Unknown"));
10306
10307         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10308             hw->bus.speed < i40e_bus_speed_8000) {
10309                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10310                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10311         }
10312
10313         /* get the requested speeds from the fw */
10314         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10315         if (err)
10316                 dev_info(&pf->pdev->dev,
10317                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10318                          i40e_stat_str(&pf->hw, err),
10319                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10320         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10321
10322         /* print a string summarizing features */
10323         i40e_print_features(pf);
10324
10325         return 0;
10326
10327         /* Unwind what we've done if something failed in the setup */
10328 err_vsis:
10329         set_bit(__I40E_DOWN, &pf->state);
10330         i40e_clear_interrupt_scheme(pf);
10331         kfree(pf->vsi);
10332 err_switch_setup:
10333         i40e_reset_interrupt_capability(pf);
10334         del_timer_sync(&pf->service_timer);
10335 err_mac_addr:
10336 err_configure_lan_hmc:
10337         (void)i40e_shutdown_lan_hmc(hw);
10338 err_init_lan_hmc:
10339         kfree(pf->qp_pile);
10340 err_sw_init:
10341 err_adminq_setup:
10342         (void)i40e_shutdown_adminq(hw);
10343 err_pf_reset:
10344         iounmap(hw->hw_addr);
10345 err_ioremap:
10346         kfree(pf);
10347 err_pf_alloc:
10348         pci_disable_pcie_error_reporting(pdev);
10349         pci_release_selected_regions(pdev,
10350                                      pci_select_bars(pdev, IORESOURCE_MEM));
10351 err_pci_reg:
10352 err_dma:
10353         pci_disable_device(pdev);
10354         return err;
10355 }
10356
10357 /**
10358  * i40e_remove - Device removal routine
10359  * @pdev: PCI device information struct
10360  *
10361  * i40e_remove is called by the PCI subsystem to alert the driver
10362  * that is should release a PCI device.  This could be caused by a
10363  * Hot-Plug event, or because the driver is going to be removed from
10364  * memory.
10365  **/
10366 static void i40e_remove(struct pci_dev *pdev)
10367 {
10368         struct i40e_pf *pf = pci_get_drvdata(pdev);
10369         i40e_status ret_code;
10370         int i;
10371
10372         i40e_dbg_pf_exit(pf);
10373
10374         i40e_ptp_stop(pf);
10375
10376         /* no more scheduling of any task */
10377         set_bit(__I40E_DOWN, &pf->state);
10378         del_timer_sync(&pf->service_timer);
10379         cancel_work_sync(&pf->service_task);
10380         i40e_fdir_teardown(pf);
10381
10382         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10383                 i40e_free_vfs(pf);
10384                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10385         }
10386
10387         i40e_fdir_teardown(pf);
10388
10389         /* If there is a switch structure or any orphans, remove them.
10390          * This will leave only the PF's VSI remaining.
10391          */
10392         for (i = 0; i < I40E_MAX_VEB; i++) {
10393                 if (!pf->veb[i])
10394                         continue;
10395
10396                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10397                     pf->veb[i]->uplink_seid == 0)
10398                         i40e_switch_branch_release(pf->veb[i]);
10399         }
10400
10401         /* Now we can shutdown the PF's VSI, just before we kill
10402          * adminq and hmc.
10403          */
10404         if (pf->vsi[pf->lan_vsi])
10405                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10406
10407         /* shutdown and destroy the HMC */
10408         if (pf->hw.hmc.hmc_obj) {
10409                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10410                 if (ret_code)
10411                         dev_warn(&pdev->dev,
10412                                  "Failed to destroy the HMC resources: %d\n",
10413                                  ret_code);
10414         }
10415
10416         /* shutdown the adminq */
10417         ret_code = i40e_shutdown_adminq(&pf->hw);
10418         if (ret_code)
10419                 dev_warn(&pdev->dev,
10420                          "Failed to destroy the Admin Queue resources: %d\n",
10421                          ret_code);
10422
10423         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10424         i40e_clear_interrupt_scheme(pf);
10425         for (i = 0; i < pf->num_alloc_vsi; i++) {
10426                 if (pf->vsi[i]) {
10427                         i40e_vsi_clear_rings(pf->vsi[i]);
10428                         i40e_vsi_clear(pf->vsi[i]);
10429                         pf->vsi[i] = NULL;
10430                 }
10431         }
10432
10433         for (i = 0; i < I40E_MAX_VEB; i++) {
10434                 kfree(pf->veb[i]);
10435                 pf->veb[i] = NULL;
10436         }
10437
10438         kfree(pf->qp_pile);
10439         kfree(pf->vsi);
10440
10441         iounmap(pf->hw.hw_addr);
10442         kfree(pf);
10443         pci_release_selected_regions(pdev,
10444                                      pci_select_bars(pdev, IORESOURCE_MEM));
10445
10446         pci_disable_pcie_error_reporting(pdev);
10447         pci_disable_device(pdev);
10448 }
10449
10450 /**
10451  * i40e_pci_error_detected - warning that something funky happened in PCI land
10452  * @pdev: PCI device information struct
10453  *
10454  * Called to warn that something happened and the error handling steps
10455  * are in progress.  Allows the driver to quiesce things, be ready for
10456  * remediation.
10457  **/
10458 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10459                                                 enum pci_channel_state error)
10460 {
10461         struct i40e_pf *pf = pci_get_drvdata(pdev);
10462
10463         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10464
10465         /* shutdown all operations */
10466         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10467                 rtnl_lock();
10468                 i40e_prep_for_reset(pf);
10469                 rtnl_unlock();
10470         }
10471
10472         /* Request a slot reset */
10473         return PCI_ERS_RESULT_NEED_RESET;
10474 }
10475
10476 /**
10477  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10478  * @pdev: PCI device information struct
10479  *
10480  * Called to find if the driver can work with the device now that
10481  * the pci slot has been reset.  If a basic connection seems good
10482  * (registers are readable and have sane content) then return a
10483  * happy little PCI_ERS_RESULT_xxx.
10484  **/
10485 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10486 {
10487         struct i40e_pf *pf = pci_get_drvdata(pdev);
10488         pci_ers_result_t result;
10489         int err;
10490         u32 reg;
10491
10492         dev_dbg(&pdev->dev, "%s\n", __func__);
10493         if (pci_enable_device_mem(pdev)) {
10494                 dev_info(&pdev->dev,
10495                          "Cannot re-enable PCI device after reset.\n");
10496                 result = PCI_ERS_RESULT_DISCONNECT;
10497         } else {
10498                 pci_set_master(pdev);
10499                 pci_restore_state(pdev);
10500                 pci_save_state(pdev);
10501                 pci_wake_from_d3(pdev, false);
10502
10503                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10504                 if (reg == 0)
10505                         result = PCI_ERS_RESULT_RECOVERED;
10506                 else
10507                         result = PCI_ERS_RESULT_DISCONNECT;
10508         }
10509
10510         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10511         if (err) {
10512                 dev_info(&pdev->dev,
10513                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10514                          err);
10515                 /* non-fatal, continue */
10516         }
10517
10518         return result;
10519 }
10520
10521 /**
10522  * i40e_pci_error_resume - restart operations after PCI error recovery
10523  * @pdev: PCI device information struct
10524  *
10525  * Called to allow the driver to bring things back up after PCI error
10526  * and/or reset recovery has finished.
10527  **/
10528 static void i40e_pci_error_resume(struct pci_dev *pdev)
10529 {
10530         struct i40e_pf *pf = pci_get_drvdata(pdev);
10531
10532         dev_dbg(&pdev->dev, "%s\n", __func__);
10533         if (test_bit(__I40E_SUSPENDED, &pf->state))
10534                 return;
10535
10536         rtnl_lock();
10537         i40e_handle_reset_warning(pf);
10538         rtnl_unlock();
10539 }
10540
10541 /**
10542  * i40e_shutdown - PCI callback for shutting down
10543  * @pdev: PCI device information struct
10544  **/
10545 static void i40e_shutdown(struct pci_dev *pdev)
10546 {
10547         struct i40e_pf *pf = pci_get_drvdata(pdev);
10548         struct i40e_hw *hw = &pf->hw;
10549
10550         set_bit(__I40E_SUSPENDED, &pf->state);
10551         set_bit(__I40E_DOWN, &pf->state);
10552         rtnl_lock();
10553         i40e_prep_for_reset(pf);
10554         rtnl_unlock();
10555
10556         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10557         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10558
10559         del_timer_sync(&pf->service_timer);
10560         cancel_work_sync(&pf->service_task);
10561         i40e_fdir_teardown(pf);
10562
10563         rtnl_lock();
10564         i40e_prep_for_reset(pf);
10565         rtnl_unlock();
10566
10567         wr32(hw, I40E_PFPM_APM,
10568              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10569         wr32(hw, I40E_PFPM_WUFC,
10570              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10571
10572         i40e_clear_interrupt_scheme(pf);
10573
10574         if (system_state == SYSTEM_POWER_OFF) {
10575                 pci_wake_from_d3(pdev, pf->wol_en);
10576                 pci_set_power_state(pdev, PCI_D3hot);
10577         }
10578 }
10579
10580 #ifdef CONFIG_PM
10581 /**
10582  * i40e_suspend - PCI callback for moving to D3
10583  * @pdev: PCI device information struct
10584  **/
10585 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10586 {
10587         struct i40e_pf *pf = pci_get_drvdata(pdev);
10588         struct i40e_hw *hw = &pf->hw;
10589
10590         set_bit(__I40E_SUSPENDED, &pf->state);
10591         set_bit(__I40E_DOWN, &pf->state);
10592
10593         rtnl_lock();
10594         i40e_prep_for_reset(pf);
10595         rtnl_unlock();
10596
10597         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10598         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10599
10600         pci_wake_from_d3(pdev, pf->wol_en);
10601         pci_set_power_state(pdev, PCI_D3hot);
10602
10603         return 0;
10604 }
10605
10606 /**
10607  * i40e_resume - PCI callback for waking up from D3
10608  * @pdev: PCI device information struct
10609  **/
10610 static int i40e_resume(struct pci_dev *pdev)
10611 {
10612         struct i40e_pf *pf = pci_get_drvdata(pdev);
10613         u32 err;
10614
10615         pci_set_power_state(pdev, PCI_D0);
10616         pci_restore_state(pdev);
10617         /* pci_restore_state() clears dev->state_saves, so
10618          * call pci_save_state() again to restore it.
10619          */
10620         pci_save_state(pdev);
10621
10622         err = pci_enable_device_mem(pdev);
10623         if (err) {
10624                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10625                 return err;
10626         }
10627         pci_set_master(pdev);
10628
10629         /* no wakeup events while running */
10630         pci_wake_from_d3(pdev, false);
10631
10632         /* handling the reset will rebuild the device state */
10633         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10634                 clear_bit(__I40E_DOWN, &pf->state);
10635                 rtnl_lock();
10636                 i40e_reset_and_rebuild(pf, false);
10637                 rtnl_unlock();
10638         }
10639
10640         return 0;
10641 }
10642
10643 #endif
10644 static const struct pci_error_handlers i40e_err_handler = {
10645         .error_detected = i40e_pci_error_detected,
10646         .slot_reset = i40e_pci_error_slot_reset,
10647         .resume = i40e_pci_error_resume,
10648 };
10649
10650 static struct pci_driver i40e_driver = {
10651         .name     = i40e_driver_name,
10652         .id_table = i40e_pci_tbl,
10653         .probe    = i40e_probe,
10654         .remove   = i40e_remove,
10655 #ifdef CONFIG_PM
10656         .suspend  = i40e_suspend,
10657         .resume   = i40e_resume,
10658 #endif
10659         .shutdown = i40e_shutdown,
10660         .err_handler = &i40e_err_handler,
10661         .sriov_configure = i40e_pci_sriov_configure,
10662 };
10663
10664 /**
10665  * i40e_init_module - Driver registration routine
10666  *
10667  * i40e_init_module is the first routine called when the driver is
10668  * loaded. All it does is register with the PCI subsystem.
10669  **/
10670 static int __init i40e_init_module(void)
10671 {
10672         pr_info("%s: %s - version %s\n", i40e_driver_name,
10673                 i40e_driver_string, i40e_driver_version_str);
10674         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10675
10676         i40e_dbg_init();
10677         return pci_register_driver(&i40e_driver);
10678 }
10679 module_init(i40e_init_module);
10680
10681 /**
10682  * i40e_exit_module - Driver exit cleanup routine
10683  *
10684  * i40e_exit_module is called just before the driver is removed
10685  * from memory.
10686  **/
10687 static void __exit i40e_exit_module(void)
10688 {
10689         pci_unregister_driver(&i40e_driver);
10690         i40e_dbg_exit();
10691 }
10692 module_exit(i40e_exit_module);