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 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 #ifdef CONFIG_SPARC
  32 #include <asm/idprom.h>
  33 #include <asm/prom.h>
  34 #endif
  35
  36 /* Local includes */
  37 #include "i40e.h"
  38 #include "i40e_diag.h"
  39 #if IS_ENABLED(CONFIG_VXLAN)
  40 #include <net/vxlan.h>
  41 #endif
  42 #if IS_ENABLED(CONFIG_GENEVE)
  43 #include <net/geneve.h>
  44 #endif
  45
  46 const char i40e_driver_name[] = "i40e";
  47 static const char i40e_driver_string[] =
  48                         "Intel(R) Ethernet Connection XL710 Network Driver";
  49
  50 #define DRV_KERN "-k"
  51
  52 #define DRV_VERSION_MAJOR 1
  53 #define DRV_VERSION_MINOR 4
  54 #define DRV_VERSION_BUILD 12
  55 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  56              __stringify(DRV_VERSION_MINOR) "." \
  57              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  58 const char i40e_driver_version_str[] = DRV_VERSION;
  59 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  60
  61 /* a bit of forward declarations */
  62 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  63 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  64 static int i40e_add_vsi(struct i40e_vsi *vsi);
  65 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  66 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  67 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  68 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  69 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  70 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  71                               u16 rss_table_size, u16 rss_size);
  72 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  73 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  74
  75 /* i40e_pci_tbl - PCI Device ID Table
  76  *
  77  * Last entry must be all 0s
  78  *
  79  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  80  *   Class, Class Mask, private data (not used) }
  81  */
  82 static const struct pci_device_id i40e_pci_tbl[] = {
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  92         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  93         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  94         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  95         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  96         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  97         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  98         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  99         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
 100         /* required last entry */
 101         {0, }
 102 };
 103 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
 104
 105 #define I40E_MAX_VF_COUNT 128
 106 static int debug = -1;
 107 module_param(debug, int, 0);
 108 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 109
 110 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 111 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 112 MODULE_LICENSE("GPL");
 113 MODULE_VERSION(DRV_VERSION);
 114
 115 static struct workqueue_struct *i40e_wq;
 116
 117 /**
 118  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 119  * @hw:   pointer to the HW structure
 120  * @mem:  ptr to mem struct to fill out
 121  * @size: size of memory requested
 122  * @alignment: what to align the allocation to
 123  **/
 124 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 125                             u64 size, u32 alignment)
 126 {
 127         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 128
 129         mem->size = ALIGN(size, alignment);
 130         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 131                                       &mem->pa, GFP_KERNEL);
 132         if (!mem->va)
 133                 return -ENOMEM;
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * i40e_free_dma_mem_d - OS specific memory free for shared code
 140  * @hw:   pointer to the HW structure
 141  * @mem:  ptr to mem struct to free
 142  **/
 143 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 144 {
 145         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 146
 147         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 148         mem->va = NULL;
 149         mem->pa = 0;
 150         mem->size = 0;
 151
 152         return 0;
 153 }
 154
 155 /**
 156  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 157  * @hw:   pointer to the HW structure
 158  * @mem:  ptr to mem struct to fill out
 159  * @size: size of memory requested
 160  **/
 161 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 162                              u32 size)
 163 {
 164         mem->size = size;
 165         mem->va = kzalloc(size, GFP_KERNEL);
 166
 167         if (!mem->va)
 168                 return -ENOMEM;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_free_virt_mem_d - OS specific memory free for shared code
 175  * @hw:   pointer to the HW structure
 176  * @mem:  ptr to mem struct to free
 177  **/
 178 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 179 {
 180         /* it's ok to kfree a NULL pointer */
 181         kfree(mem->va);
 182         mem->va = NULL;
 183         mem->size = 0;
 184
 185         return 0;
 186 }
 187
 188 /**
 189  * i40e_get_lump - find a lump of free generic resource
 190  * @pf: board private structure
 191  * @pile: the pile of resource to search
 192  * @needed: the number of items needed
 193  * @id: an owner id to stick on the items assigned
 194  *
 195  * Returns the base item index of the lump, or negative for error
 196  *
 197  * The search_hint trick and lack of advanced fit-finding only work
 198  * because we're highly likely to have all the same size lump requests.
 199  * Linear search time and any fragmentation should be minimal.
 200  **/
 201 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 202                          u16 needed, u16 id)
 203 {
 204         int ret = -ENOMEM;
 205         int i, j;
 206
 207         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 208                 dev_info(&pf->pdev->dev,
 209                          "param err: pile=%p needed=%d id=0x%04x\n",
 210                          pile, needed, id);
 211                 return -EINVAL;
 212         }
 213
 214         /* start the linear search with an imperfect hint */
 215         i = pile->search_hint;
 216         while (i < pile->num_entries) {
 217                 /* skip already allocated entries */
 218                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 219                         i++;
 220                         continue;
 221                 }
 222
 223                 /* do we have enough in this lump? */
 224                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 225                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 226                                 break;
 227                 }
 228
 229                 if (j == needed) {
 230                         /* there was enough, so assign it to the requestor */
 231                         for (j = 0; j < needed; j++)
 232                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 233                         ret = i;
 234                         pile->search_hint = i + j;
 235                         break;
 236                 }
 237
 238                 /* not enough, so skip over it and continue looking */
 239                 i += j;
 240         }
 241
 242         return ret;
 243 }
 244
 245 /**
 246  * i40e_put_lump - return a lump of generic resource
 247  * @pile: the pile of resource to search
 248  * @index: the base item index
 249  * @id: the owner id of the items assigned
 250  *
 251  * Returns the count of items in the lump
 252  **/
 253 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 254 {
 255         int valid_id = (id | I40E_PILE_VALID_BIT);
 256         int count = 0;
 257         int i;
 258
 259         if (!pile || index >= pile->num_entries)
 260                 return -EINVAL;
 261
 262         for (i = index;
 263              i < pile->num_entries && pile->list[i] == valid_id;
 264              i++) {
 265                 pile->list[i] = 0;
 266                 count++;
 267         }
 268
 269         if (count && index < pile->search_hint)
 270                 pile->search_hint = index;
 271
 272         return count;
 273 }
 274
 275 /**
 276  * i40e_find_vsi_from_id - searches for the vsi with the given id
 277  * @pf - the pf structure to search for the vsi
 278  * @id - id of the vsi it is searching for
 279  **/
 280 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 281 {
 282         int i;
 283
 284         for (i = 0; i < pf->num_alloc_vsi; i++)
 285                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 286                         return pf->vsi[i];
 287
 288         return NULL;
 289 }
 290
 291 /**
 292  * i40e_service_event_schedule - Schedule the service task to wake up
 293  * @pf: board private structure
 294  *
 295  * If not already scheduled, this puts the task into the work queue
 296  **/
 297 static void i40e_service_event_schedule(struct i40e_pf *pf)
 298 {
 299         if (!test_bit(__I40E_DOWN, &pf->state) &&
 300             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 301             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 302                 queue_work(i40e_wq, &pf->service_task);
 303 }
 304
 305 /**
 306  * i40e_tx_timeout - Respond to a Tx Hang
 307  * @netdev: network interface device structure
 308  *
 309  * If any port has noticed a Tx timeout, it is likely that the whole
 310  * device is munged, not just the one netdev port, so go for the full
 311  * reset.
 312  **/
 313 #ifdef I40E_FCOE
 314 void i40e_tx_timeout(struct net_device *netdev)
 315 #else
 316 static void i40e_tx_timeout(struct net_device *netdev)
 317 #endif
 318 {
 319         struct i40e_netdev_priv *np = netdev_priv(netdev);
 320         struct i40e_vsi *vsi = np->vsi;
 321         struct i40e_pf *pf = vsi->back;
 322         struct i40e_ring *tx_ring = NULL;
 323         unsigned int i, hung_queue = 0;
 324         u32 head, val;
 325
 326         pf->tx_timeout_count++;
 327
 328         /* find the stopped queue the same way the stack does */
 329         for (i = 0; i < netdev->num_tx_queues; i++) {
 330                 struct netdev_queue *q;
 331                 unsigned long trans_start;
 332
 333                 q = netdev_get_tx_queue(netdev, i);
 334                 trans_start = q->trans_start ? : netdev->trans_start;
 335                 if (netif_xmit_stopped(q) &&
 336                     time_after(jiffies,
 337                                (trans_start + netdev->watchdog_timeo))) {
 338                         hung_queue = i;
 339                         break;
 340                 }
 341         }
 342
 343         if (i == netdev->num_tx_queues) {
 344                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 345         } else {
 346                 /* now that we have an index, find the tx_ring struct */
 347                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 348                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 349                                 if (hung_queue ==
 350                                     vsi->tx_rings[i]->queue_index) {
 351                                         tx_ring = vsi->tx_rings[i];
 352                                         break;
 353                                 }
 354                         }
 355                 }
 356         }
 357
 358         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 359                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 360         else if (time_before(jiffies,
 361                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 362                 return;   /* don't do any new action before the next timeout */
 363
 364         if (tx_ring) {
 365                 head = i40e_get_head(tx_ring);
 366                 /* Read interrupt register */
 367                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 368                         val = rd32(&pf->hw,
 369                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 370                                                 tx_ring->vsi->base_vector - 1));
 371                 else
 372                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 373
 374                 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",
 375                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 376                             head, tx_ring->next_to_use,
 377                             readl(tx_ring->tail), val);
 378         }
 379
 380         pf->tx_timeout_last_recovery = jiffies;
 381         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 382                     pf->tx_timeout_recovery_level, hung_queue);
 383
 384         switch (pf->tx_timeout_recovery_level) {
 385         case 1:
 386                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 387                 break;
 388         case 2:
 389                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 390                 break;
 391         case 3:
 392                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 393                 break;
 394         default:
 395                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 396                 break;
 397         }
 398
 399         i40e_service_event_schedule(pf);
 400         pf->tx_timeout_recovery_level++;
 401 }
 402
 403 /**
 404  * i40e_release_rx_desc - Store the new tail and head values
 405  * @rx_ring: ring to bump
 406  * @val: new head index
 407  **/
 408 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 409 {
 410         rx_ring->next_to_use = val;
 411
 412         /* Force memory writes to complete before letting h/w
 413          * know there are new descriptors to fetch.  (Only
 414          * applicable for weak-ordered memory model archs,
 415          * such as IA-64).
 416          */
 417         wmb();
 418         writel(val, rx_ring->tail);
 419 }
 420
 421 /**
 422  * i40e_get_vsi_stats_struct - Get System Network Statistics
 423  * @vsi: the VSI we care about
 424  *
 425  * Returns the address of the device statistics structure.
 426  * The statistics are actually updated from the service task.
 427  **/
 428 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 429 {
 430         return &vsi->net_stats;
 431 }
 432
 433 /**
 434  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 435  * @netdev: network interface device structure
 436  *
 437  * Returns the address of the device statistics structure.
 438  * The statistics are actually updated from the service task.
 439  **/
 440 #ifdef I40E_FCOE
 441 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 442                                              struct net_device *netdev,
 443                                              struct rtnl_link_stats64 *stats)
 444 #else
 445 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 446                                              struct net_device *netdev,
 447                                              struct rtnl_link_stats64 *stats)
 448 #endif
 449 {
 450         struct i40e_netdev_priv *np = netdev_priv(netdev);
 451         struct i40e_ring *tx_ring, *rx_ring;
 452         struct i40e_vsi *vsi = np->vsi;
 453         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 454         int i;
 455
 456         if (test_bit(__I40E_DOWN, &vsi->state))
 457                 return stats;
 458
 459         if (!vsi->tx_rings)
 460                 return stats;
 461
 462         rcu_read_lock();
 463         for (i = 0; i < vsi->num_queue_pairs; i++) {
 464                 u64 bytes, packets;
 465                 unsigned int start;
 466
 467                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 468                 if (!tx_ring)
 469                         continue;
 470
 471                 do {
 472                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 473                         packets = tx_ring->stats.packets;
 474                         bytes   = tx_ring->stats.bytes;
 475                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 476
 477                 stats->tx_packets += packets;
 478                 stats->tx_bytes   += bytes;
 479                 rx_ring = &tx_ring[1];
 480
 481                 do {
 482                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 483                         packets = rx_ring->stats.packets;
 484                         bytes   = rx_ring->stats.bytes;
 485                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 486
 487                 stats->rx_packets += packets;
 488                 stats->rx_bytes   += bytes;
 489         }
 490         rcu_read_unlock();
 491
 492         /* following stats updated by i40e_watchdog_subtask() */
 493         stats->multicast        = vsi_stats->multicast;
 494         stats->tx_errors        = vsi_stats->tx_errors;
 495         stats->tx_dropped       = vsi_stats->tx_dropped;
 496         stats->rx_errors        = vsi_stats->rx_errors;
 497         stats->rx_dropped       = vsi_stats->rx_dropped;
 498         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 499         stats->rx_length_errors = vsi_stats->rx_length_errors;
 500
 501         return stats;
 502 }
 503
 504 /**
 505  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 506  * @vsi: the VSI to have its stats reset
 507  **/
 508 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 509 {
 510         struct rtnl_link_stats64 *ns;
 511         int i;
 512
 513         if (!vsi)
 514                 return;
 515
 516         ns = i40e_get_vsi_stats_struct(vsi);
 517         memset(ns, 0, sizeof(*ns));
 518         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 519         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 520         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 521         if (vsi->rx_rings && vsi->rx_rings[0]) {
 522                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 523                         memset(&vsi->rx_rings[i]->stats, 0,
 524                                sizeof(vsi->rx_rings[i]->stats));
 525                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 526                                sizeof(vsi->rx_rings[i]->rx_stats));
 527                         memset(&vsi->tx_rings[i]->stats, 0,
 528                                sizeof(vsi->tx_rings[i]->stats));
 529                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 530                                sizeof(vsi->tx_rings[i]->tx_stats));
 531                 }
 532         }
 533         vsi->stat_offsets_loaded = false;
 534 }
 535
 536 /**
 537  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 538  * @pf: the PF to be reset
 539  **/
 540 void i40e_pf_reset_stats(struct i40e_pf *pf)
 541 {
 542         int i;
 543
 544         memset(&pf->stats, 0, sizeof(pf->stats));
 545         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 546         pf->stat_offsets_loaded = false;
 547
 548         for (i = 0; i < I40E_MAX_VEB; i++) {
 549                 if (pf->veb[i]) {
 550                         memset(&pf->veb[i]->stats, 0,
 551                                sizeof(pf->veb[i]->stats));
 552                         memset(&pf->veb[i]->stats_offsets, 0,
 553                                sizeof(pf->veb[i]->stats_offsets));
 554                         pf->veb[i]->stat_offsets_loaded = false;
 555                 }
 556         }
 557 }
 558
 559 /**
 560  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 561  * @hw: ptr to the hardware info
 562  * @hireg: the high 32 bit reg to read
 563  * @loreg: the low 32 bit reg to read
 564  * @offset_loaded: has the initial offset been loaded yet
 565  * @offset: ptr to current offset value
 566  * @stat: ptr to the stat
 567  *
 568  * Since the device stats are not reset at PFReset, they likely will not
 569  * be zeroed when the driver starts.  We'll save the first values read
 570  * and use them as offsets to be subtracted from the raw values in order
 571  * to report stats that count from zero.  In the process, we also manage
 572  * the potential roll-over.
 573  **/
 574 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 575                                bool offset_loaded, u64 *offset, u64 *stat)
 576 {
 577         u64 new_data;
 578
 579         if (hw->device_id == I40E_DEV_ID_QEMU) {
 580                 new_data = rd32(hw, loreg);
 581                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 582         } else {
 583                 new_data = rd64(hw, loreg);
 584         }
 585         if (!offset_loaded)
 586                 *offset = new_data;
 587         if (likely(new_data >= *offset))
 588                 *stat = new_data - *offset;
 589         else
 590                 *stat = (new_data + BIT_ULL(48)) - *offset;
 591         *stat &= 0xFFFFFFFFFFFFULL;
 592 }
 593
 594 /**
 595  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 596  * @hw: ptr to the hardware info
 597  * @reg: the hw reg to read
 598  * @offset_loaded: has the initial offset been loaded yet
 599  * @offset: ptr to current offset value
 600  * @stat: ptr to the stat
 601  **/
 602 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 603                                bool offset_loaded, u64 *offset, u64 *stat)
 604 {
 605         u32 new_data;
 606
 607         new_data = rd32(hw, reg);
 608         if (!offset_loaded)
 609                 *offset = new_data;
 610         if (likely(new_data >= *offset))
 611                 *stat = (u32)(new_data - *offset);
 612         else
 613                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 614 }
 615
 616 /**
 617  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 618  * @vsi: the VSI to be updated
 619  **/
 620 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 621 {
 622         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 623         struct i40e_pf *pf = vsi->back;
 624         struct i40e_hw *hw = &pf->hw;
 625         struct i40e_eth_stats *oes;
 626         struct i40e_eth_stats *es;     /* device's eth stats */
 627
 628         es = &vsi->eth_stats;
 629         oes = &vsi->eth_stats_offsets;
 630
 631         /* Gather up the stats that the hw collects */
 632         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 633                            vsi->stat_offsets_loaded,
 634                            &oes->tx_errors, &es->tx_errors);
 635         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_discards, &es->rx_discards);
 638         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 639                            vsi->stat_offsets_loaded,
 640                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 641         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->tx_errors, &es->tx_errors);
 644
 645         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 646                            I40E_GLV_GORCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->rx_bytes, &es->rx_bytes);
 649         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 650                            I40E_GLV_UPRCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->rx_unicast, &es->rx_unicast);
 653         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 654                            I40E_GLV_MPRCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->rx_multicast, &es->rx_multicast);
 657         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 658                            I40E_GLV_BPRCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->rx_broadcast, &es->rx_broadcast);
 661
 662         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 663                            I40E_GLV_GOTCL(stat_idx),
 664                            vsi->stat_offsets_loaded,
 665                            &oes->tx_bytes, &es->tx_bytes);
 666         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 667                            I40E_GLV_UPTCL(stat_idx),
 668                            vsi->stat_offsets_loaded,
 669                            &oes->tx_unicast, &es->tx_unicast);
 670         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 671                            I40E_GLV_MPTCL(stat_idx),
 672                            vsi->stat_offsets_loaded,
 673                            &oes->tx_multicast, &es->tx_multicast);
 674         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 675                            I40E_GLV_BPTCL(stat_idx),
 676                            vsi->stat_offsets_loaded,
 677                            &oes->tx_broadcast, &es->tx_broadcast);
 678         vsi->stat_offsets_loaded = true;
 679 }
 680
 681 /**
 682  * i40e_update_veb_stats - Update Switch component statistics
 683  * @veb: the VEB being updated
 684  **/
 685 static void i40e_update_veb_stats(struct i40e_veb *veb)
 686 {
 687         struct i40e_pf *pf = veb->pf;
 688         struct i40e_hw *hw = &pf->hw;
 689         struct i40e_eth_stats *oes;
 690         struct i40e_eth_stats *es;     /* device's eth stats */
 691         struct i40e_veb_tc_stats *veb_oes;
 692         struct i40e_veb_tc_stats *veb_es;
 693         int i, idx = 0;
 694
 695         idx = veb->stats_idx;
 696         es = &veb->stats;
 697         oes = &veb->stats_offsets;
 698         veb_es = &veb->tc_stats;
 699         veb_oes = &veb->tc_stats_offsets;
 700
 701         /* Gather up the stats that the hw collects */
 702         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_discards, &es->tx_discards);
 705         if (hw->revision_id > 0)
 706                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 707                                    veb->stat_offsets_loaded,
 708                                    &oes->rx_unknown_protocol,
 709                                    &es->rx_unknown_protocol);
 710         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 711                            veb->stat_offsets_loaded,
 712                            &oes->rx_bytes, &es->rx_bytes);
 713         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 714                            veb->stat_offsets_loaded,
 715                            &oes->rx_unicast, &es->rx_unicast);
 716         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 717                            veb->stat_offsets_loaded,
 718                            &oes->rx_multicast, &es->rx_multicast);
 719         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 720                            veb->stat_offsets_loaded,
 721                            &oes->rx_broadcast, &es->rx_broadcast);
 722
 723         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 724                            veb->stat_offsets_loaded,
 725                            &oes->tx_bytes, &es->tx_bytes);
 726         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 727                            veb->stat_offsets_loaded,
 728                            &oes->tx_unicast, &es->tx_unicast);
 729         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 730                            veb->stat_offsets_loaded,
 731                            &oes->tx_multicast, &es->tx_multicast);
 732         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 733                            veb->stat_offsets_loaded,
 734                            &oes->tx_broadcast, &es->tx_broadcast);
 735         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 737                                    I40E_GLVEBTC_RPCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_rx_packets[i],
 740                                    &veb_es->tc_rx_packets[i]);
 741                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 742                                    I40E_GLVEBTC_RBCL(i, idx),
 743                                    veb->stat_offsets_loaded,
 744                                    &veb_oes->tc_rx_bytes[i],
 745                                    &veb_es->tc_rx_bytes[i]);
 746                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 747                                    I40E_GLVEBTC_TPCL(i, idx),
 748                                    veb->stat_offsets_loaded,
 749                                    &veb_oes->tc_tx_packets[i],
 750                                    &veb_es->tc_tx_packets[i]);
 751                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 752                                    I40E_GLVEBTC_TBCL(i, idx),
 753                                    veb->stat_offsets_loaded,
 754                                    &veb_oes->tc_tx_bytes[i],
 755                                    &veb_es->tc_tx_bytes[i]);
 756         }
 757         veb->stat_offsets_loaded = true;
 758 }
 759
 760 #ifdef I40E_FCOE
 761 /**
 762  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 763  * @vsi: the VSI that is capable of doing FCoE
 764  **/
 765 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 766 {
 767         struct i40e_pf *pf = vsi->back;
 768         struct i40e_hw *hw = &pf->hw;
 769         struct i40e_fcoe_stats *ofs;
 770         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 771         int idx;
 772
 773         if (vsi->type != I40E_VSI_FCOE)
 774                 return;
 775
 776         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 777         fs = &vsi->fcoe_stats;
 778         ofs = &vsi->fcoe_stats_offsets;
 779
 780         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 783         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 786         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 789         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 790                            vsi->fcoe_stat_offsets_loaded,
 791                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 792         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 793                            vsi->fcoe_stat_offsets_loaded,
 794                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 795         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 796                            vsi->fcoe_stat_offsets_loaded,
 797                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 798         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 799                            vsi->fcoe_stat_offsets_loaded,
 800                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 801         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 802                            vsi->fcoe_stat_offsets_loaded,
 803                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 804
 805         vsi->fcoe_stat_offsets_loaded = true;
 806 }
 807
 808 #endif
 809 /**
 810  * i40e_update_vsi_stats - Update the vsi statistics counters.
 811  * @vsi: the VSI to be updated
 812  *
 813  * There are a few instances where we store the same stat in a
 814  * couple of different structs.  This is partly because we have
 815  * the netdev stats that need to be filled out, which is slightly
 816  * different from the "eth_stats" defined by the chip and used in
 817  * VF communications.  We sort it out here.
 818  **/
 819 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 820 {
 821         struct i40e_pf *pf = vsi->back;
 822         struct rtnl_link_stats64 *ons;
 823         struct rtnl_link_stats64 *ns;   /* netdev stats */
 824         struct i40e_eth_stats *oes;
 825         struct i40e_eth_stats *es;     /* device's eth stats */
 826         u32 tx_restart, tx_busy;
 827         struct i40e_ring *p;
 828         u32 rx_page, rx_buf;
 829         u64 bytes, packets;
 830         unsigned int start;
 831         u64 tx_linearize;
 832         u64 tx_force_wb;
 833         u64 rx_p, rx_b;
 834         u64 tx_p, tx_b;
 835         u16 q;
 836
 837         if (test_bit(__I40E_DOWN, &vsi->state) ||
 838             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 839                 return;
 840
 841         ns = i40e_get_vsi_stats_struct(vsi);
 842         ons = &vsi->net_stats_offsets;
 843         es = &vsi->eth_stats;
 844         oes = &vsi->eth_stats_offsets;
 845
 846         /* Gather up the netdev and vsi stats that the driver collects
 847          * on the fly during packet processing
 848          */
 849         rx_b = rx_p = 0;
 850         tx_b = tx_p = 0;
 851         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 852         rx_page = 0;
 853         rx_buf = 0;
 854         rcu_read_lock();
 855         for (q = 0; q < vsi->num_queue_pairs; q++) {
 856                 /* locate Tx ring */
 857                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 858
 859                 do {
 860                         start = u64_stats_fetch_begin_irq(&p->syncp);
 861                         packets = p->stats.packets;
 862                         bytes = p->stats.bytes;
 863                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 864                 tx_b += bytes;
 865                 tx_p += packets;
 866                 tx_restart += p->tx_stats.restart_queue;
 867                 tx_busy += p->tx_stats.tx_busy;
 868                 tx_linearize += p->tx_stats.tx_linearize;
 869                 tx_force_wb += p->tx_stats.tx_force_wb;
 870
 871                 /* Rx queue is part of the same block as Tx queue */
 872                 p = &p[1];
 873                 do {
 874                         start = u64_stats_fetch_begin_irq(&p->syncp);
 875                         packets = p->stats.packets;
 876                         bytes = p->stats.bytes;
 877                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 878                 rx_b += bytes;
 879                 rx_p += packets;
 880                 rx_buf += p->rx_stats.alloc_buff_failed;
 881                 rx_page += p->rx_stats.alloc_page_failed;
 882         }
 883         rcu_read_unlock();
 884         vsi->tx_restart = tx_restart;
 885         vsi->tx_busy = tx_busy;
 886         vsi->tx_linearize = tx_linearize;
 887         vsi->tx_force_wb = tx_force_wb;
 888         vsi->rx_page_failed = rx_page;
 889         vsi->rx_buf_failed = rx_buf;
 890
 891         ns->rx_packets = rx_p;
 892         ns->rx_bytes = rx_b;
 893         ns->tx_packets = tx_p;
 894         ns->tx_bytes = tx_b;
 895
 896         /* update netdev stats from eth stats */
 897         i40e_update_eth_stats(vsi);
 898         ons->tx_errors = oes->tx_errors;
 899         ns->tx_errors = es->tx_errors;
 900         ons->multicast = oes->rx_multicast;
 901         ns->multicast = es->rx_multicast;
 902         ons->rx_dropped = oes->rx_discards;
 903         ns->rx_dropped = es->rx_discards;
 904         ons->tx_dropped = oes->tx_discards;
 905         ns->tx_dropped = es->tx_discards;
 906
 907         /* pull in a couple PF stats if this is the main vsi */
 908         if (vsi == pf->vsi[pf->lan_vsi]) {
 909                 ns->rx_crc_errors = pf->stats.crc_errors;
 910                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 911                 ns->rx_length_errors = pf->stats.rx_length_errors;
 912         }
 913 }
 914
 915 /**
 916  * i40e_update_pf_stats - Update the PF statistics counters.
 917  * @pf: the PF to be updated
 918  **/
 919 static void i40e_update_pf_stats(struct i40e_pf *pf)
 920 {
 921         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 922         struct i40e_hw_port_stats *nsd = &pf->stats;
 923         struct i40e_hw *hw = &pf->hw;
 924         u32 val;
 925         int i;
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 928                            I40E_GLPRT_GORCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 931         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 932                            I40E_GLPRT_GOTCL(hw->port),
 933                            pf->stat_offsets_loaded,
 934                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 935         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.rx_discards,
 938                            &nsd->eth.rx_discards);
 939         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 940                            I40E_GLPRT_UPRCL(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->eth.rx_unicast,
 943                            &nsd->eth.rx_unicast);
 944         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 945                            I40E_GLPRT_MPRCL(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->eth.rx_multicast,
 948                            &nsd->eth.rx_multicast);
 949         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 950                            I40E_GLPRT_BPRCL(hw->port),
 951                            pf->stat_offsets_loaded,
 952                            &osd->eth.rx_broadcast,
 953                            &nsd->eth.rx_broadcast);
 954         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 955                            I40E_GLPRT_UPTCL(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->eth.tx_unicast,
 958                            &nsd->eth.tx_unicast);
 959         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 960                            I40E_GLPRT_MPTCL(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->eth.tx_multicast,
 963                            &nsd->eth.tx_multicast);
 964         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 965                            I40E_GLPRT_BPTCL(hw->port),
 966                            pf->stat_offsets_loaded,
 967                            &osd->eth.tx_broadcast,
 968                            &nsd->eth.tx_broadcast);
 969
 970         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->tx_dropped_link_down,
 973                            &nsd->tx_dropped_link_down);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->crc_errors, &nsd->crc_errors);
 978
 979         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->illegal_bytes, &nsd->illegal_bytes);
 982
 983         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->mac_local_faults,
 986                            &nsd->mac_local_faults);
 987         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->mac_remote_faults,
 990                            &nsd->mac_remote_faults);
 991
 992         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->rx_length_errors,
 995                            &nsd->rx_length_errors);
 996
 997         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->link_xon_rx, &nsd->link_xon_rx);
1000         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1001                            pf->stat_offsets_loaded,
1002                            &osd->link_xon_tx, &nsd->link_xon_tx);
1003         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1006         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1007                            pf->stat_offsets_loaded,
1008                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1009
1010         for (i = 0; i < 8; i++) {
1011                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1012                                    pf->stat_offsets_loaded,
1013                                    &osd->priority_xoff_rx[i],
1014                                    &nsd->priority_xoff_rx[i]);
1015                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1016                                    pf->stat_offsets_loaded,
1017                                    &osd->priority_xon_rx[i],
1018                                    &nsd->priority_xon_rx[i]);
1019                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1020                                    pf->stat_offsets_loaded,
1021                                    &osd->priority_xon_tx[i],
1022                                    &nsd->priority_xon_tx[i]);
1023                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1024                                    pf->stat_offsets_loaded,
1025                                    &osd->priority_xoff_tx[i],
1026                                    &nsd->priority_xoff_tx[i]);
1027                 i40e_stat_update32(hw,
1028                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1029                                    pf->stat_offsets_loaded,
1030                                    &osd->priority_xon_2_xoff[i],
1031                                    &nsd->priority_xon_2_xoff[i]);
1032         }
1033
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1035                            I40E_GLPRT_PRC64L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_64, &nsd->rx_size_64);
1038         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1039                            I40E_GLPRT_PRC127L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->rx_size_127, &nsd->rx_size_127);
1042         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1043                            I40E_GLPRT_PRC255L(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_size_255, &nsd->rx_size_255);
1046         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1047                            I40E_GLPRT_PRC511L(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->rx_size_511, &nsd->rx_size_511);
1050         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1051                            I40E_GLPRT_PRC1023L(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->rx_size_1023, &nsd->rx_size_1023);
1054         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1055                            I40E_GLPRT_PRC1522L(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->rx_size_1522, &nsd->rx_size_1522);
1058         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1059                            I40E_GLPRT_PRC9522L(hw->port),
1060                            pf->stat_offsets_loaded,
1061                            &osd->rx_size_big, &nsd->rx_size_big);
1062
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1064                            I40E_GLPRT_PTC64L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_64, &nsd->tx_size_64);
1067         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1068                            I40E_GLPRT_PTC127L(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->tx_size_127, &nsd->tx_size_127);
1071         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1072                            I40E_GLPRT_PTC255L(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->tx_size_255, &nsd->tx_size_255);
1075         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1076                            I40E_GLPRT_PTC511L(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->tx_size_511, &nsd->tx_size_511);
1079         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1080                            I40E_GLPRT_PTC1023L(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->tx_size_1023, &nsd->tx_size_1023);
1083         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1084                            I40E_GLPRT_PTC1522L(hw->port),
1085                            pf->stat_offsets_loaded,
1086                            &osd->tx_size_1522, &nsd->tx_size_1522);
1087         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1088                            I40E_GLPRT_PTC9522L(hw->port),
1089                            pf->stat_offsets_loaded,
1090                            &osd->tx_size_big, &nsd->tx_size_big);
1091
1092         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1093                            pf->stat_offsets_loaded,
1094                            &osd->rx_undersize, &nsd->rx_undersize);
1095         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_fragments, &nsd->rx_fragments);
1098         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_oversize, &nsd->rx_oversize);
1101         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1102                            pf->stat_offsets_loaded,
1103                            &osd->rx_jabber, &nsd->rx_jabber);
1104
1105         /* FDIR stats */
1106         i40e_stat_update32(hw,
1107                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1108                            pf->stat_offsets_loaded,
1109                            &osd->fd_atr_match, &nsd->fd_atr_match);
1110         i40e_stat_update32(hw,
1111                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1112                            pf->stat_offsets_loaded,
1113                            &osd->fd_sb_match, &nsd->fd_sb_match);
1114         i40e_stat_update32(hw,
1115                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1116                       pf->stat_offsets_loaded,
1117                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1118
1119         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1120         nsd->tx_lpi_status =
1121                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1122                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1123         nsd->rx_lpi_status =
1124                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1125                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1126         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1127                            pf->stat_offsets_loaded,
1128                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1129         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1130                            pf->stat_offsets_loaded,
1131                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1132
1133         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1134             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1135                 nsd->fd_sb_status = true;
1136         else
1137                 nsd->fd_sb_status = false;
1138
1139         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1140             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1141                 nsd->fd_atr_status = true;
1142         else
1143                 nsd->fd_atr_status = false;
1144
1145         pf->stat_offsets_loaded = true;
1146 }
1147
1148 /**
1149  * i40e_update_stats - Update the various statistics counters.
1150  * @vsi: the VSI to be updated
1151  *
1152  * Update the various stats for this VSI and its related entities.
1153  **/
1154 void i40e_update_stats(struct i40e_vsi *vsi)
1155 {
1156         struct i40e_pf *pf = vsi->back;
1157
1158         if (vsi == pf->vsi[pf->lan_vsi])
1159                 i40e_update_pf_stats(pf);
1160
1161         i40e_update_vsi_stats(vsi);
1162 #ifdef I40E_FCOE
1163         i40e_update_fcoe_stats(vsi);
1164 #endif
1165 }
1166
1167 /**
1168  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1169  * @vsi: the VSI to be searched
1170  * @macaddr: the MAC address
1171  * @vlan: the vlan
1172  * @is_vf: make sure its a VF filter, else doesn't matter
1173  * @is_netdev: make sure its a netdev filter, else doesn't matter
1174  *
1175  * Returns ptr to the filter object or NULL
1176  **/
1177 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1178                                                 u8 *macaddr, s16 vlan,
1179                                                 bool is_vf, bool is_netdev)
1180 {
1181         struct i40e_mac_filter *f;
1182
1183         if (!vsi || !macaddr)
1184                 return NULL;
1185
1186         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1187                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1188                     (vlan == f->vlan)    &&
1189                     (!is_vf || f->is_vf) &&
1190                     (!is_netdev || f->is_netdev))
1191                         return f;
1192         }
1193         return NULL;
1194 }
1195
1196 /**
1197  * i40e_find_mac - Find a mac addr in the macvlan filters list
1198  * @vsi: the VSI to be searched
1199  * @macaddr: the MAC address we are searching for
1200  * @is_vf: make sure its a VF filter, else doesn't matter
1201  * @is_netdev: make sure its a netdev filter, else doesn't matter
1202  *
1203  * Returns the first filter with the provided MAC address or NULL if
1204  * MAC address was not found
1205  **/
1206 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1207                                       bool is_vf, bool is_netdev)
1208 {
1209         struct i40e_mac_filter *f;
1210
1211         if (!vsi || !macaddr)
1212                 return NULL;
1213
1214         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1215                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1216                     (!is_vf || f->is_vf) &&
1217                     (!is_netdev || f->is_netdev))
1218                         return f;
1219         }
1220         return NULL;
1221 }
1222
1223 /**
1224  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1225  * @vsi: the VSI to be searched
1226  *
1227  * Returns true if VSI is in vlan mode or false otherwise
1228  **/
1229 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1230 {
1231         struct i40e_mac_filter *f;
1232
1233         /* Only -1 for all the filters denotes not in vlan mode
1234          * so we have to go through all the list in order to make sure
1235          */
1236         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1237                 if (f->vlan >= 0 || vsi->info.pvid)
1238                         return true;
1239         }
1240
1241         return false;
1242 }
1243
1244 /**
1245  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1246  * @vsi: the VSI to be searched
1247  * @macaddr: the mac address to be filtered
1248  * @is_vf: true if it is a VF
1249  * @is_netdev: true if it is a netdev
1250  *
1251  * Goes through all the macvlan filters and adds a
1252  * macvlan filter for each unique vlan that already exists
1253  *
1254  * Returns first filter found on success, else NULL
1255  **/
1256 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1257                                              bool is_vf, bool is_netdev)
1258 {
1259         struct i40e_mac_filter *f;
1260
1261         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1262                 if (vsi->info.pvid)
1263                         f->vlan = le16_to_cpu(vsi->info.pvid);
1264                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1265                                       is_vf, is_netdev)) {
1266                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1267                                              is_vf, is_netdev))
1268                                 return NULL;
1269                 }
1270         }
1271
1272         return list_first_entry_or_null(&vsi->mac_filter_list,
1273                                         struct i40e_mac_filter, list);
1274 }
1275
1276 /**
1277  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1278  * @vsi: the VSI to be searched
1279  * @macaddr: the mac address to be removed
1280  * @is_vf: true if it is a VF
1281  * @is_netdev: true if it is a netdev
1282  *
1283  * Removes a given MAC address from a VSI, regardless of VLAN
1284  *
1285  * Returns 0 for success, or error
1286  **/
1287 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1288                           bool is_vf, bool is_netdev)
1289 {
1290         struct i40e_mac_filter *f = NULL;
1291         int changed = 0;
1292
1293         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1294              "Missing mac_filter_list_lock\n");
1295         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1296                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1297                     (is_vf == f->is_vf) &&
1298                     (is_netdev == f->is_netdev)) {
1299                         f->counter--;
1300                         f->changed = true;
1301                         changed = 1;
1302                 }
1303         }
1304         if (changed) {
1305                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1306                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1307                 return 0;
1308         }
1309         return -ENOENT;
1310 }
1311
1312 /**
1313  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1314  * @vsi: the PF Main VSI - inappropriate for any other VSI
1315  * @macaddr: the MAC address
1316  *
1317  * Some older firmware configurations set up a default promiscuous VLAN
1318  * filter that needs to be removed.
1319  **/
1320 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1321 {
1322         struct i40e_aqc_remove_macvlan_element_data element;
1323         struct i40e_pf *pf = vsi->back;
1324         i40e_status ret;
1325
1326         /* Only appropriate for the PF main VSI */
1327         if (vsi->type != I40E_VSI_MAIN)
1328                 return -EINVAL;
1329
1330         memset(&element, 0, sizeof(element));
1331         ether_addr_copy(element.mac_addr, macaddr);
1332         element.vlan_tag = 0;
1333         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1334                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1335         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1336         if (ret)
1337                 return -ENOENT;
1338
1339         return 0;
1340 }
1341
1342 /**
1343  * i40e_add_filter - Add a mac/vlan filter to the VSI
1344  * @vsi: the VSI to be searched
1345  * @macaddr: the MAC address
1346  * @vlan: the vlan
1347  * @is_vf: make sure its a VF filter, else doesn't matter
1348  * @is_netdev: make sure its a netdev filter, else doesn't matter
1349  *
1350  * Returns ptr to the filter object or NULL when no memory available.
1351  *
1352  * NOTE: This function is expected to be called with mac_filter_list_lock
1353  * being held.
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_tail(&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  * NOTE: This function is expected to be called with mac_filter_list_lock
1414  * being held.
1415  **/
1416 void i40e_del_filter(struct i40e_vsi *vsi,
1417                      u8 *macaddr, s16 vlan,
1418                      bool is_vf, bool is_netdev)
1419 {
1420         struct i40e_mac_filter *f;
1421
1422         if (!vsi || !macaddr)
1423                 return;
1424
1425         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1426         if (!f || f->counter == 0)
1427                 return;
1428
1429         if (is_vf) {
1430                 if (f->is_vf) {
1431                         f->is_vf = false;
1432                         f->counter--;
1433                 }
1434         } else if (is_netdev) {
1435                 if (f->is_netdev) {
1436                         f->is_netdev = false;
1437                         f->counter--;
1438                 }
1439         } else {
1440                 /* make sure we don't remove a filter in use by VF or netdev */
1441                 int min_f = 0;
1442
1443                 min_f += (f->is_vf ? 1 : 0);
1444                 min_f += (f->is_netdev ? 1 : 0);
1445
1446                 if (f->counter > min_f)
1447                         f->counter--;
1448         }
1449
1450         /* counter == 0 tells sync_filters_subtask to
1451          * remove the filter from the firmware's list
1452          */
1453         if (f->counter == 0) {
1454                 f->changed = true;
1455                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1456                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1457         }
1458 }
1459
1460 /**
1461  * i40e_set_mac - NDO callback to set mac address
1462  * @netdev: network interface device structure
1463  * @p: pointer to an address structure
1464  *
1465  * Returns 0 on success, negative on failure
1466  **/
1467 #ifdef I40E_FCOE
1468 int i40e_set_mac(struct net_device *netdev, void *p)
1469 #else
1470 static int i40e_set_mac(struct net_device *netdev, void *p)
1471 #endif
1472 {
1473         struct i40e_netdev_priv *np = netdev_priv(netdev);
1474         struct i40e_vsi *vsi = np->vsi;
1475         struct i40e_pf *pf = vsi->back;
1476         struct i40e_hw *hw = &pf->hw;
1477         struct sockaddr *addr = p;
1478         struct i40e_mac_filter *f;
1479
1480         if (!is_valid_ether_addr(addr->sa_data))
1481                 return -EADDRNOTAVAIL;
1482
1483         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1484                 netdev_info(netdev, "already using mac address %pM\n",
1485                             addr->sa_data);
1486                 return 0;
1487         }
1488
1489         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1490             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1491                 return -EADDRNOTAVAIL;
1492
1493         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1494                 netdev_info(netdev, "returning to hw mac address %pM\n",
1495                             hw->mac.addr);
1496         else
1497                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1498
1499         if (vsi->type == I40E_VSI_MAIN) {
1500                 i40e_status ret;
1501
1502                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1503                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1504                                                 addr->sa_data, NULL);
1505                 if (ret) {
1506                         netdev_info(netdev,
1507                                     "Addr change for Main VSI failed: %d\n",
1508                                     ret);
1509                         return -EADDRNOTAVAIL;
1510                 }
1511         }
1512
1513         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1514                 struct i40e_aqc_remove_macvlan_element_data element;
1515
1516                 memset(&element, 0, sizeof(element));
1517                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1518                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1519                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1520         } else {
1521                 spin_lock_bh(&vsi->mac_filter_list_lock);
1522                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1523                                 false, false);
1524                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1525         }
1526
1527         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1528                 struct i40e_aqc_add_macvlan_element_data element;
1529
1530                 memset(&element, 0, sizeof(element));
1531                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1532                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1533                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1534         } else {
1535                 spin_lock_bh(&vsi->mac_filter_list_lock);
1536                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1537                                     false, false);
1538                 if (f)
1539                         f->is_laa = true;
1540                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1541         }
1542
1543         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1544
1545         /* schedule our worker thread which will take care of
1546          * applying the new filter changes
1547          */
1548         i40e_service_event_schedule(vsi->back);
1549         return 0;
1550 }
1551
1552 /**
1553  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1554  * @vsi: the VSI being setup
1555  * @ctxt: VSI context structure
1556  * @enabled_tc: Enabled TCs bitmap
1557  * @is_add: True if called before Add VSI
1558  *
1559  * Setup VSI queue mapping for enabled traffic classes.
1560  **/
1561 #ifdef I40E_FCOE
1562 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1563                               struct i40e_vsi_context *ctxt,
1564                               u8 enabled_tc,
1565                               bool is_add)
1566 #else
1567 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1568                                      struct i40e_vsi_context *ctxt,
1569                                      u8 enabled_tc,
1570                                      bool is_add)
1571 #endif
1572 {
1573         struct i40e_pf *pf = vsi->back;
1574         u16 sections = 0;
1575         u8 netdev_tc = 0;
1576         u16 numtc = 0;
1577         u16 qcount;
1578         u8 offset;
1579         u16 qmap;
1580         int i;
1581         u16 num_tc_qps = 0;
1582
1583         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1584         offset = 0;
1585
1586         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1587                 /* Find numtc from enabled TC bitmap */
1588                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1589                         if (enabled_tc & BIT(i)) /* TC is enabled */
1590                                 numtc++;
1591                 }
1592                 if (!numtc) {
1593                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1594                         numtc = 1;
1595                 }
1596         } else {
1597                 /* At least TC0 is enabled in case of non-DCB case */
1598                 numtc = 1;
1599         }
1600
1601         vsi->tc_config.numtc = numtc;
1602         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1603         /* Number of queues per enabled TC */
1604         /* In MFP case we can have a much lower count of MSIx
1605          * vectors available and so we need to lower the used
1606          * q count.
1607          */
1608         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1609                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1610         else
1611                 qcount = vsi->alloc_queue_pairs;
1612         num_tc_qps = qcount / numtc;
1613         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1614
1615         /* Setup queue offset/count for all TCs for given VSI */
1616         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1617                 /* See if the given TC is enabled for the given VSI */
1618                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1619                         /* TC is enabled */
1620                         int pow, num_qps;
1621
1622                         switch (vsi->type) {
1623                         case I40E_VSI_MAIN:
1624                                 qcount = min_t(int, pf->alloc_rss_size,
1625                                                num_tc_qps);
1626                                 break;
1627 #ifdef I40E_FCOE
1628                         case I40E_VSI_FCOE:
1629                                 qcount = num_tc_qps;
1630                                 break;
1631 #endif
1632                         case I40E_VSI_FDIR:
1633                         case I40E_VSI_SRIOV:
1634                         case I40E_VSI_VMDQ2:
1635                         default:
1636                                 qcount = num_tc_qps;
1637                                 WARN_ON(i != 0);
1638                                 break;
1639                         }
1640                         vsi->tc_config.tc_info[i].qoffset = offset;
1641                         vsi->tc_config.tc_info[i].qcount = qcount;
1642
1643                         /* find the next higher power-of-2 of num queue pairs */
1644                         num_qps = qcount;
1645                         pow = 0;
1646                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1647                                 pow++;
1648                                 num_qps >>= 1;
1649                         }
1650
1651                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1652                         qmap =
1653                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1654                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1655
1656                         offset += qcount;
1657                 } else {
1658                         /* TC is not enabled so set the offset to
1659                          * default queue and allocate one queue
1660                          * for the given TC.
1661                          */
1662                         vsi->tc_config.tc_info[i].qoffset = 0;
1663                         vsi->tc_config.tc_info[i].qcount = 1;
1664                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1665
1666                         qmap = 0;
1667                 }
1668                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1669         }
1670
1671         /* Set actual Tx/Rx queue pairs */
1672         vsi->num_queue_pairs = offset;
1673         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1674                 if (vsi->req_queue_pairs > 0)
1675                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1676                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1677                         vsi->num_queue_pairs = pf->num_lan_msix;
1678         }
1679
1680         /* Scheduler section valid can only be set for ADD VSI */
1681         if (is_add) {
1682                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1683
1684                 ctxt->info.up_enable_bits = enabled_tc;
1685         }
1686         if (vsi->type == I40E_VSI_SRIOV) {
1687                 ctxt->info.mapping_flags |=
1688                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1689                 for (i = 0; i < vsi->num_queue_pairs; i++)
1690                         ctxt->info.queue_mapping[i] =
1691                                                cpu_to_le16(vsi->base_queue + i);
1692         } else {
1693                 ctxt->info.mapping_flags |=
1694                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1695                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1696         }
1697         ctxt->info.valid_sections |= cpu_to_le16(sections);
1698 }
1699
1700 /**
1701  * i40e_set_rx_mode - NDO callback to set the netdev filters
1702  * @netdev: network interface device structure
1703  **/
1704 #ifdef I40E_FCOE
1705 void i40e_set_rx_mode(struct net_device *netdev)
1706 #else
1707 static void i40e_set_rx_mode(struct net_device *netdev)
1708 #endif
1709 {
1710         struct i40e_netdev_priv *np = netdev_priv(netdev);
1711         struct i40e_mac_filter *f, *ftmp;
1712         struct i40e_vsi *vsi = np->vsi;
1713         struct netdev_hw_addr *uca;
1714         struct netdev_hw_addr *mca;
1715         struct netdev_hw_addr *ha;
1716
1717         spin_lock_bh(&vsi->mac_filter_list_lock);
1718
1719         /* add addr if not already in the filter list */
1720         netdev_for_each_uc_addr(uca, netdev) {
1721                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1722                         if (i40e_is_vsi_in_vlan(vsi))
1723                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1724                                                      false, true);
1725                         else
1726                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1727                                                 false, true);
1728                 }
1729         }
1730
1731         netdev_for_each_mc_addr(mca, netdev) {
1732                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1733                         if (i40e_is_vsi_in_vlan(vsi))
1734                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1735                                                      false, true);
1736                         else
1737                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1738                                                 false, true);
1739                 }
1740         }
1741
1742         /* remove filter if not in netdev list */
1743         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1744
1745                 if (!f->is_netdev)
1746                         continue;
1747
1748                 netdev_for_each_mc_addr(mca, netdev)
1749                         if (ether_addr_equal(mca->addr, f->macaddr))
1750                                 goto bottom_of_search_loop;
1751
1752                 netdev_for_each_uc_addr(uca, netdev)
1753                         if (ether_addr_equal(uca->addr, f->macaddr))
1754                                 goto bottom_of_search_loop;
1755
1756                 for_each_dev_addr(netdev, ha)
1757                         if (ether_addr_equal(ha->addr, f->macaddr))
1758                                 goto bottom_of_search_loop;
1759
1760                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1761                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1762
1763 bottom_of_search_loop:
1764                 continue;
1765         }
1766         spin_unlock_bh(&vsi->mac_filter_list_lock);
1767
1768         /* check for other flag changes */
1769         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1770                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1771                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1772         }
1773
1774         /* schedule our worker thread which will take care of
1775          * applying the new filter changes
1776          */
1777         i40e_service_event_schedule(vsi->back);
1778 }
1779
1780 /**
1781  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1782  * @src: source MAC filter entry to be clones
1783  *
1784  * Returns the pointer to newly cloned MAC filter entry or NULL
1785  * in case of error
1786  **/
1787 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1788                                         struct i40e_mac_filter *src)
1789 {
1790         struct i40e_mac_filter *f;
1791
1792         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1793         if (!f)
1794                 return NULL;
1795         *f = *src;
1796
1797         INIT_LIST_HEAD(&f->list);
1798
1799         return f;
1800 }
1801
1802 /**
1803  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1804  * @vsi: pointer to vsi struct
1805  * @from: Pointer to list which contains MAC filter entries - changes to
1806  *        those entries needs to be undone.
1807  *
1808  * MAC filter entries from list were slated to be removed from device.
1809  **/
1810 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1811                                          struct list_head *from)
1812 {
1813         struct i40e_mac_filter *f, *ftmp;
1814
1815         list_for_each_entry_safe(f, ftmp, from, list) {
1816                 f->changed = true;
1817                 /* Move the element back into MAC filter list*/
1818                 list_move_tail(&f->list, &vsi->mac_filter_list);
1819         }
1820 }
1821
1822 /**
1823  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1824  * @vsi: pointer to vsi struct
1825  *
1826  * MAC filter entries from list were slated to be added from device.
1827  **/
1828 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1829 {
1830         struct i40e_mac_filter *f, *ftmp;
1831
1832         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1833                 if (!f->changed && f->counter)
1834                         f->changed = true;
1835         }
1836 }
1837
1838 /**
1839  * i40e_cleanup_add_list - Deletes the element from add list and release
1840  *                      memory
1841  * @add_list: Pointer to list which contains MAC filter entries
1842  **/
1843 static void i40e_cleanup_add_list(struct list_head *add_list)
1844 {
1845         struct i40e_mac_filter *f, *ftmp;
1846
1847         list_for_each_entry_safe(f, ftmp, add_list, list) {
1848                 list_del(&f->list);
1849                 kfree(f);
1850         }
1851 }
1852
1853 /**
1854  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1855  * @vsi: ptr to the VSI
1856  *
1857  * Push any outstanding VSI filter changes through the AdminQ.
1858  *
1859  * Returns 0 or error value
1860  **/
1861 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1862 {
1863         struct list_head tmp_del_list, tmp_add_list;
1864         struct i40e_mac_filter *f, *ftmp, *fclone;
1865         bool promisc_forced_on = false;
1866         bool add_happened = false;
1867         int filter_list_len = 0;
1868         u32 changed_flags = 0;
1869         i40e_status aq_ret = 0;
1870         bool err_cond = false;
1871         int retval = 0;
1872         struct i40e_pf *pf;
1873         int num_add = 0;
1874         int num_del = 0;
1875         int aq_err = 0;
1876         u16 cmd_flags;
1877
1878         /* empty array typed pointers, kcalloc later */
1879         struct i40e_aqc_add_macvlan_element_data *add_list;
1880         struct i40e_aqc_remove_macvlan_element_data *del_list;
1881
1882         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1883                 usleep_range(1000, 2000);
1884         pf = vsi->back;
1885
1886         if (vsi->netdev) {
1887                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1888                 vsi->current_netdev_flags = vsi->netdev->flags;
1889         }
1890
1891         INIT_LIST_HEAD(&tmp_del_list);
1892         INIT_LIST_HEAD(&tmp_add_list);
1893
1894         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1895                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1896
1897                 spin_lock_bh(&vsi->mac_filter_list_lock);
1898                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1899                         if (!f->changed)
1900                                 continue;
1901
1902                         if (f->counter != 0)
1903                                 continue;
1904                         f->changed = false;
1905
1906                         /* Move the element into temporary del_list */
1907                         list_move_tail(&f->list, &tmp_del_list);
1908                 }
1909
1910                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1911                         if (!f->changed)
1912                                 continue;
1913
1914                         if (f->counter == 0)
1915                                 continue;
1916                         f->changed = false;
1917
1918                         /* Clone MAC filter entry and add into temporary list */
1919                         fclone = i40e_mac_filter_entry_clone(f);
1920                         if (!fclone) {
1921                                 err_cond = true;
1922                                 break;
1923                         }
1924                         list_add_tail(&fclone->list, &tmp_add_list);
1925                 }
1926
1927                 /* if failed to clone MAC filter entry - undo */
1928                 if (err_cond) {
1929                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1930                         i40e_undo_add_filter_entries(vsi);
1931                 }
1932                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1933
1934                 if (err_cond) {
1935                         i40e_cleanup_add_list(&tmp_add_list);
1936                         retval = -ENOMEM;
1937                         goto out;
1938                 }
1939         }
1940
1941         /* Now process 'del_list' outside the lock */
1942         if (!list_empty(&tmp_del_list)) {
1943                 int del_list_size;
1944
1945                 filter_list_len = pf->hw.aq.asq_buf_size /
1946                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1947                 del_list_size = filter_list_len *
1948                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1949                 del_list = kzalloc(del_list_size, GFP_ATOMIC);
1950                 if (!del_list) {
1951                         i40e_cleanup_add_list(&tmp_add_list);
1952
1953                         /* Undo VSI's MAC filter entry element updates */
1954                         spin_lock_bh(&vsi->mac_filter_list_lock);
1955                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1956                         i40e_undo_add_filter_entries(vsi);
1957                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1958                         retval = -ENOMEM;
1959                         goto out;
1960                 }
1961
1962                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1963                         cmd_flags = 0;
1964
1965                         /* add to delete list */
1966                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1967                         del_list[num_del].vlan_tag =
1968                                 cpu_to_le16((u16)(f->vlan ==
1969                                             I40E_VLAN_ANY ? 0 : f->vlan));
1970
1971                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1972                         del_list[num_del].flags = cmd_flags;
1973                         num_del++;
1974
1975                         /* flush a full buffer */
1976                         if (num_del == filter_list_len) {
1977                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1978                                                                 vsi->seid,
1979                                                                 del_list,
1980                                                                 num_del,
1981                                                                 NULL);
1982                                 aq_err = pf->hw.aq.asq_last_status;
1983                                 num_del = 0;
1984                                 memset(del_list, 0, del_list_size);
1985
1986                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1987                                         retval = -EIO;
1988                                         dev_err(&pf->pdev->dev,
1989                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1990                                                 i40e_stat_str(&pf->hw, aq_ret),
1991                                                 i40e_aq_str(&pf->hw, aq_err));
1992                                 }
1993                         }
1994                         /* Release memory for MAC filter entries which were
1995                          * synced up with HW.
1996                          */
1997                         list_del(&f->list);
1998                         kfree(f);
1999                 }
2000
2001                 if (num_del) {
2002                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
2003                                                         del_list, num_del,
2004                                                         NULL);
2005                         aq_err = pf->hw.aq.asq_last_status;
2006                         num_del = 0;
2007
2008                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
2009                                 dev_info(&pf->pdev->dev,
2010                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2011                                          i40e_stat_str(&pf->hw, aq_ret),
2012                                          i40e_aq_str(&pf->hw, aq_err));
2013                 }
2014
2015                 kfree(del_list);
2016                 del_list = NULL;
2017         }
2018
2019         if (!list_empty(&tmp_add_list)) {
2020                 int add_list_size;
2021
2022                 /* do all the adds now */
2023                 filter_list_len = pf->hw.aq.asq_buf_size /
2024                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2025                 add_list_size = filter_list_len *
2026                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2027                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2028                 if (!add_list) {
2029                         /* Purge element from temporary lists */
2030                         i40e_cleanup_add_list(&tmp_add_list);
2031
2032                         /* Undo add filter entries from VSI MAC filter list */
2033                         spin_lock_bh(&vsi->mac_filter_list_lock);
2034                         i40e_undo_add_filter_entries(vsi);
2035                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2036                         retval = -ENOMEM;
2037                         goto out;
2038                 }
2039
2040                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2041
2042                         add_happened = true;
2043                         cmd_flags = 0;
2044
2045                         /* add to add array */
2046                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2047                         add_list[num_add].vlan_tag =
2048                                 cpu_to_le16(
2049                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2050                         add_list[num_add].queue_number = 0;
2051
2052                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2053                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2054                         num_add++;
2055
2056                         /* flush a full buffer */
2057                         if (num_add == filter_list_len) {
2058                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2059                                                              add_list, num_add,
2060                                                              NULL);
2061                                 aq_err = pf->hw.aq.asq_last_status;
2062                                 num_add = 0;
2063
2064                                 if (aq_ret)
2065                                         break;
2066                                 memset(add_list, 0, add_list_size);
2067                         }
2068                         /* Entries from tmp_add_list were cloned from MAC
2069                          * filter list, hence clean those cloned entries
2070                          */
2071                         list_del(&f->list);
2072                         kfree(f);
2073                 }
2074
2075                 if (num_add) {
2076                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2077                                                      add_list, num_add, NULL);
2078                         aq_err = pf->hw.aq.asq_last_status;
2079                         num_add = 0;
2080                 }
2081                 kfree(add_list);
2082                 add_list = NULL;
2083
2084                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2085                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2086                         dev_info(&pf->pdev->dev,
2087                                  "add filter failed, err %s aq_err %s\n",
2088                                  i40e_stat_str(&pf->hw, aq_ret),
2089                                  i40e_aq_str(&pf->hw, aq_err));
2090                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2091                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2092                                       &vsi->state)) {
2093                                 promisc_forced_on = true;
2094                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2095                                         &vsi->state);
2096                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2097                         }
2098                 }
2099         }
2100
2101         /* check for changes in promiscuous modes */
2102         if (changed_flags & IFF_ALLMULTI) {
2103                 bool cur_multipromisc;
2104
2105                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2106                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2107                                                                vsi->seid,
2108                                                                cur_multipromisc,
2109                                                                NULL);
2110                 if (aq_ret) {
2111                         retval = i40e_aq_rc_to_posix(aq_ret,
2112                                                      pf->hw.aq.asq_last_status);
2113                         dev_info(&pf->pdev->dev,
2114                                  "set multi promisc failed, err %s aq_err %s\n",
2115                                  i40e_stat_str(&pf->hw, aq_ret),
2116                                  i40e_aq_str(&pf->hw,
2117                                              pf->hw.aq.asq_last_status));
2118                 }
2119         }
2120         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2121                 bool cur_promisc;
2122
2123                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2124                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2125                                         &vsi->state));
2126                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2127                         /* set defport ON for Main VSI instead of true promisc
2128                          * this way we will get all unicast/multicast and VLAN
2129                          * promisc behavior but will not get VF or VMDq traffic
2130                          * replicated on the Main VSI.
2131                          */
2132                         if (pf->cur_promisc != cur_promisc) {
2133                                 pf->cur_promisc = cur_promisc;
2134                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2135                         }
2136                 } else {
2137                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2138                                                           &vsi->back->hw,
2139                                                           vsi->seid,
2140                                                           cur_promisc, NULL);
2141                         if (aq_ret) {
2142                                 retval =
2143                                 i40e_aq_rc_to_posix(aq_ret,
2144                                                     pf->hw.aq.asq_last_status);
2145                                 dev_info(&pf->pdev->dev,
2146                                          "set unicast promisc failed, err %d, aq_err %d\n",
2147                                          aq_ret, pf->hw.aq.asq_last_status);
2148                         }
2149                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2150                                                           &vsi->back->hw,
2151                                                           vsi->seid,
2152                                                           cur_promisc, NULL);
2153                         if (aq_ret) {
2154                                 retval =
2155                                 i40e_aq_rc_to_posix(aq_ret,
2156                                                     pf->hw.aq.asq_last_status);
2157                                 dev_info(&pf->pdev->dev,
2158                                          "set multicast promisc failed, err %d, aq_err %d\n",
2159                                          aq_ret, pf->hw.aq.asq_last_status);
2160                         }
2161                 }
2162                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2163                                                    vsi->seid,
2164                                                    cur_promisc, NULL);
2165                 if (aq_ret) {
2166                         retval = i40e_aq_rc_to_posix(aq_ret,
2167                                                      pf->hw.aq.asq_last_status);
2168                         dev_info(&pf->pdev->dev,
2169                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2170                                  i40e_stat_str(&pf->hw, aq_ret),
2171                                  i40e_aq_str(&pf->hw,
2172                                              pf->hw.aq.asq_last_status));
2173                 }
2174         }
2175 out:
2176         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2177         return retval;
2178 }
2179
2180 /**
2181  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2182  * @pf: board private structure
2183  **/
2184 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2185 {
2186         int v;
2187
2188         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2189                 return;
2190         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2191
2192         for (v = 0; v < pf->num_alloc_vsi; v++) {
2193                 if (pf->vsi[v] &&
2194                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2195                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2196
2197                         if (ret) {
2198                                 /* come back and try again later */
2199                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2200                                 break;
2201                         }
2202                 }
2203         }
2204 }
2205
2206 /**
2207  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2208  * @netdev: network interface device structure
2209  * @new_mtu: new value for maximum frame size
2210  *
2211  * Returns 0 on success, negative on failure
2212  **/
2213 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2214 {
2215         struct i40e_netdev_priv *np = netdev_priv(netdev);
2216         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2217         struct i40e_vsi *vsi = np->vsi;
2218
2219         /* MTU < 68 is an error and causes problems on some kernels */
2220         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2221                 return -EINVAL;
2222
2223         netdev_info(netdev, "changing MTU from %d to %d\n",
2224                     netdev->mtu, new_mtu);
2225         netdev->mtu = new_mtu;
2226         if (netif_running(netdev))
2227                 i40e_vsi_reinit_locked(vsi);
2228
2229         return 0;
2230 }
2231
2232 /**
2233  * i40e_ioctl - Access the hwtstamp interface
2234  * @netdev: network interface device structure
2235  * @ifr: interface request data
2236  * @cmd: ioctl command
2237  **/
2238 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2239 {
2240         struct i40e_netdev_priv *np = netdev_priv(netdev);
2241         struct i40e_pf *pf = np->vsi->back;
2242
2243         switch (cmd) {
2244         case SIOCGHWTSTAMP:
2245                 return i40e_ptp_get_ts_config(pf, ifr);
2246         case SIOCSHWTSTAMP:
2247                 return i40e_ptp_set_ts_config(pf, ifr);
2248         default:
2249                 return -EOPNOTSUPP;
2250         }
2251 }
2252
2253 /**
2254  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2255  * @vsi: the vsi being adjusted
2256  **/
2257 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2258 {
2259         struct i40e_vsi_context ctxt;
2260         i40e_status ret;
2261
2262         if ((vsi->info.valid_sections &
2263              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2264             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2265                 return;  /* already enabled */
2266
2267         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2268         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2269                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2270
2271         ctxt.seid = vsi->seid;
2272         ctxt.info = vsi->info;
2273         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2274         if (ret) {
2275                 dev_info(&vsi->back->pdev->dev,
2276                          "update vlan stripping failed, err %s aq_err %s\n",
2277                          i40e_stat_str(&vsi->back->hw, ret),
2278                          i40e_aq_str(&vsi->back->hw,
2279                                      vsi->back->hw.aq.asq_last_status));
2280         }
2281 }
2282
2283 /**
2284  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2285  * @vsi: the vsi being adjusted
2286  **/
2287 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2288 {
2289         struct i40e_vsi_context ctxt;
2290         i40e_status ret;
2291
2292         if ((vsi->info.valid_sections &
2293              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2294             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2295              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2296                 return;  /* already disabled */
2297
2298         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2299         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2300                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2301
2302         ctxt.seid = vsi->seid;
2303         ctxt.info = vsi->info;
2304         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2305         if (ret) {
2306                 dev_info(&vsi->back->pdev->dev,
2307                          "update vlan stripping failed, err %s aq_err %s\n",
2308                          i40e_stat_str(&vsi->back->hw, ret),
2309                          i40e_aq_str(&vsi->back->hw,
2310                                      vsi->back->hw.aq.asq_last_status));
2311         }
2312 }
2313
2314 /**
2315  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2316  * @netdev: network interface to be adjusted
2317  * @features: netdev features to test if VLAN offload is enabled or not
2318  **/
2319 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2320 {
2321         struct i40e_netdev_priv *np = netdev_priv(netdev);
2322         struct i40e_vsi *vsi = np->vsi;
2323
2324         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2325                 i40e_vlan_stripping_enable(vsi);
2326         else
2327                 i40e_vlan_stripping_disable(vsi);
2328 }
2329
2330 /**
2331  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2332  * @vsi: the vsi being configured
2333  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2334  **/
2335 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2336 {
2337         struct i40e_mac_filter *f, *add_f;
2338         bool is_netdev, is_vf;
2339
2340         is_vf = (vsi->type == I40E_VSI_SRIOV);
2341         is_netdev = !!(vsi->netdev);
2342
2343         /* Locked once because all functions invoked below iterates list*/
2344         spin_lock_bh(&vsi->mac_filter_list_lock);
2345
2346         if (is_netdev) {
2347                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2348                                         is_vf, is_netdev);
2349                 if (!add_f) {
2350                         dev_info(&vsi->back->pdev->dev,
2351                                  "Could not add vlan filter %d for %pM\n",
2352                                  vid, vsi->netdev->dev_addr);
2353                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2354                         return -ENOMEM;
2355                 }
2356         }
2357
2358         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2359                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2360                 if (!add_f) {
2361                         dev_info(&vsi->back->pdev->dev,
2362                                  "Could not add vlan filter %d for %pM\n",
2363                                  vid, f->macaddr);
2364                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2365                         return -ENOMEM;
2366                 }
2367         }
2368
2369         /* Now if we add a vlan tag, make sure to check if it is the first
2370          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2371          * with 0, so we now accept untagged and specified tagged traffic
2372          * (and not any taged and untagged)
2373          */
2374         if (vid > 0) {
2375                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2376                                                   I40E_VLAN_ANY,
2377                                                   is_vf, is_netdev)) {
2378                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2379                                         I40E_VLAN_ANY, is_vf, is_netdev);
2380                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2381                                                 is_vf, is_netdev);
2382                         if (!add_f) {
2383                                 dev_info(&vsi->back->pdev->dev,
2384                                          "Could not add filter 0 for %pM\n",
2385                                          vsi->netdev->dev_addr);
2386                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2387                                 return -ENOMEM;
2388                         }
2389                 }
2390         }
2391
2392         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2393         if (vid > 0 && !vsi->info.pvid) {
2394                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2395                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2396                                               is_vf, is_netdev))
2397                                 continue;
2398                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2399                                         is_vf, is_netdev);
2400                         add_f = i40e_add_filter(vsi, f->macaddr,
2401                                                 0, is_vf, is_netdev);
2402                         if (!add_f) {
2403                                 dev_info(&vsi->back->pdev->dev,
2404                                          "Could not add filter 0 for %pM\n",
2405                                         f->macaddr);
2406                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2407                                 return -ENOMEM;
2408                         }
2409                 }
2410         }
2411
2412         spin_unlock_bh(&vsi->mac_filter_list_lock);
2413
2414         /* schedule our worker thread which will take care of
2415          * applying the new filter changes
2416          */
2417         i40e_service_event_schedule(vsi->back);
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2423  * @vsi: the vsi being configured
2424  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2425  *
2426  * Return: 0 on success or negative otherwise
2427  **/
2428 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2429 {
2430         struct net_device *netdev = vsi->netdev;
2431         struct i40e_mac_filter *f, *add_f;
2432         bool is_vf, is_netdev;
2433         int filter_count = 0;
2434
2435         is_vf = (vsi->type == I40E_VSI_SRIOV);
2436         is_netdev = !!(netdev);
2437
2438         /* Locked once because all functions invoked below iterates list */
2439         spin_lock_bh(&vsi->mac_filter_list_lock);
2440
2441         if (is_netdev)
2442                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2443
2444         list_for_each_entry(f, &vsi->mac_filter_list, list)
2445                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2446
2447         /* go through all the filters for this VSI and if there is only
2448          * vid == 0 it means there are no other filters, so vid 0 must
2449          * be replaced with -1. This signifies that we should from now
2450          * on accept any traffic (with any tag present, or untagged)
2451          */
2452         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2453                 if (is_netdev) {
2454                         if (f->vlan &&
2455                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2456                                 filter_count++;
2457                 }
2458
2459                 if (f->vlan)
2460                         filter_count++;
2461         }
2462
2463         if (!filter_count && is_netdev) {
2464                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2465                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2466                                     is_vf, is_netdev);
2467                 if (!f) {
2468                         dev_info(&vsi->back->pdev->dev,
2469                                  "Could not add filter %d for %pM\n",
2470                                  I40E_VLAN_ANY, netdev->dev_addr);
2471                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2472                         return -ENOMEM;
2473                 }
2474         }
2475
2476         if (!filter_count) {
2477                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2478                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2479                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2480                                                 is_vf, is_netdev);
2481                         if (!add_f) {
2482                                 dev_info(&vsi->back->pdev->dev,
2483                                          "Could not add filter %d for %pM\n",
2484                                          I40E_VLAN_ANY, f->macaddr);
2485                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2486                                 return -ENOMEM;
2487                         }
2488                 }
2489         }
2490
2491         spin_unlock_bh(&vsi->mac_filter_list_lock);
2492
2493         /* schedule our worker thread which will take care of
2494          * applying the new filter changes
2495          */
2496         i40e_service_event_schedule(vsi->back);
2497         return 0;
2498 }
2499
2500 /**
2501  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2502  * @netdev: network interface to be adjusted
2503  * @vid: vlan id to be added
2504  *
2505  * net_device_ops implementation for adding vlan ids
2506  **/
2507 #ifdef I40E_FCOE
2508 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2509                          __always_unused __be16 proto, u16 vid)
2510 #else
2511 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2512                                 __always_unused __be16 proto, u16 vid)
2513 #endif
2514 {
2515         struct i40e_netdev_priv *np = netdev_priv(netdev);
2516         struct i40e_vsi *vsi = np->vsi;
2517         int ret = 0;
2518
2519         if (vid > 4095)
2520                 return -EINVAL;
2521
2522         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2523
2524         /* If the network stack called us with vid = 0 then
2525          * it is asking to receive priority tagged packets with
2526          * vlan id 0.  Our HW receives them by default when configured
2527          * to receive untagged packets so there is no need to add an
2528          * extra filter for vlan 0 tagged packets.
2529          */
2530         if (vid)
2531                 ret = i40e_vsi_add_vlan(vsi, vid);
2532
2533         if (!ret && (vid < VLAN_N_VID))
2534                 set_bit(vid, vsi->active_vlans);
2535
2536         return ret;
2537 }
2538
2539 /**
2540  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2541  * @netdev: network interface to be adjusted
2542  * @vid: vlan id to be removed
2543  *
2544  * net_device_ops implementation for removing vlan ids
2545  **/
2546 #ifdef I40E_FCOE
2547 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2548                           __always_unused __be16 proto, u16 vid)
2549 #else
2550 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2551                                  __always_unused __be16 proto, u16 vid)
2552 #endif
2553 {
2554         struct i40e_netdev_priv *np = netdev_priv(netdev);
2555         struct i40e_vsi *vsi = np->vsi;
2556
2557         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2558
2559         /* return code is ignored as there is nothing a user
2560          * can do about failure to remove and a log message was
2561          * already printed from the other function
2562          */
2563         i40e_vsi_kill_vlan(vsi, vid);
2564
2565         clear_bit(vid, vsi->active_vlans);
2566
2567         return 0;
2568 }
2569
2570 /**
2571  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2572  * @vsi: the vsi being brought back up
2573  **/
2574 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2575 {
2576         u16 vid;
2577
2578         if (!vsi->netdev)
2579                 return;
2580
2581         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2582
2583         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2584                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2585                                      vid);
2586 }
2587
2588 /**
2589  * i40e_vsi_add_pvid - Add pvid for the VSI
2590  * @vsi: the vsi being adjusted
2591  * @vid: the vlan id to set as a PVID
2592  **/
2593 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2594 {
2595         struct i40e_vsi_context ctxt;
2596         i40e_status ret;
2597
2598         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2599         vsi->info.pvid = cpu_to_le16(vid);
2600         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2601                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2602                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2603
2604         ctxt.seid = vsi->seid;
2605         ctxt.info = vsi->info;
2606         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2607         if (ret) {
2608                 dev_info(&vsi->back->pdev->dev,
2609                          "add pvid failed, err %s aq_err %s\n",
2610                          i40e_stat_str(&vsi->back->hw, ret),
2611                          i40e_aq_str(&vsi->back->hw,
2612                                      vsi->back->hw.aq.asq_last_status));
2613                 return -ENOENT;
2614         }
2615
2616         return 0;
2617 }
2618
2619 /**
2620  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2621  * @vsi: the vsi being adjusted
2622  *
2623  * Just use the vlan_rx_register() service to put it back to normal
2624  **/
2625 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2626 {
2627         i40e_vlan_stripping_disable(vsi);
2628
2629         vsi->info.pvid = 0;
2630 }
2631
2632 /**
2633  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2634  * @vsi: ptr to the VSI
2635  *
2636  * If this function returns with an error, then it's possible one or
2637  * more of the rings is populated (while the rest are not).  It is the
2638  * callers duty to clean those orphaned rings.
2639  *
2640  * Return 0 on success, negative on failure
2641  **/
2642 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2643 {
2644         int i, err = 0;
2645
2646         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2647                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2648
2649         return err;
2650 }
2651
2652 /**
2653  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2654  * @vsi: ptr to the VSI
2655  *
2656  * Free VSI's transmit software resources
2657  **/
2658 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2659 {
2660         int i;
2661
2662         if (!vsi->tx_rings)
2663                 return;
2664
2665         for (i = 0; i < vsi->num_queue_pairs; i++)
2666                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2667                         i40e_free_tx_resources(vsi->tx_rings[i]);
2668 }
2669
2670 /**
2671  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2672  * @vsi: ptr to the VSI
2673  *
2674  * If this function returns with an error, then it's possible one or
2675  * more of the rings is populated (while the rest are not).  It is the
2676  * callers duty to clean those orphaned rings.
2677  *
2678  * Return 0 on success, negative on failure
2679  **/
2680 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2681 {
2682         int i, err = 0;
2683
2684         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2685                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2686 #ifdef I40E_FCOE
2687         i40e_fcoe_setup_ddp_resources(vsi);
2688 #endif
2689         return err;
2690 }
2691
2692 /**
2693  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2694  * @vsi: ptr to the VSI
2695  *
2696  * Free all receive software resources
2697  **/
2698 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2699 {
2700         int i;
2701
2702         if (!vsi->rx_rings)
2703                 return;
2704
2705         for (i = 0; i < vsi->num_queue_pairs; i++)
2706                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2707                         i40e_free_rx_resources(vsi->rx_rings[i]);
2708 #ifdef I40E_FCOE
2709         i40e_fcoe_free_ddp_resources(vsi);
2710 #endif
2711 }
2712
2713 /**
2714  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2715  * @ring: The Tx ring to configure
2716  *
2717  * This enables/disables XPS for a given Tx descriptor ring
2718  * based on the TCs enabled for the VSI that ring belongs to.
2719  **/
2720 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2721 {
2722         struct i40e_vsi *vsi = ring->vsi;
2723         cpumask_var_t mask;
2724
2725         if (!ring->q_vector || !ring->netdev)
2726                 return;
2727
2728         /* Single TC mode enable XPS */
2729         if (vsi->tc_config.numtc <= 1) {
2730                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2731                         netif_set_xps_queue(ring->netdev,
2732                                             &ring->q_vector->affinity_mask,
2733                                             ring->queue_index);
2734         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2735                 /* Disable XPS to allow selection based on TC */
2736                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2737                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2738                 free_cpumask_var(mask);
2739         }
2740
2741         /* schedule our worker thread which will take care of
2742          * applying the new filter changes
2743          */
2744         i40e_service_event_schedule(vsi->back);
2745 }
2746
2747 /**
2748  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2749  * @ring: The Tx ring to configure
2750  *
2751  * Configure the Tx descriptor ring in the HMC context.
2752  **/
2753 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2754 {
2755         struct i40e_vsi *vsi = ring->vsi;
2756         u16 pf_q = vsi->base_queue + ring->queue_index;
2757         struct i40e_hw *hw = &vsi->back->hw;
2758         struct i40e_hmc_obj_txq tx_ctx;
2759         i40e_status err = 0;
2760         u32 qtx_ctl = 0;
2761
2762         /* some ATR related tx ring init */
2763         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2764                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2765                 ring->atr_count = 0;
2766         } else {
2767                 ring->atr_sample_rate = 0;
2768         }
2769
2770         /* configure XPS */
2771         i40e_config_xps_tx_ring(ring);
2772
2773         /* clear the context structure first */
2774         memset(&tx_ctx, 0, sizeof(tx_ctx));
2775
2776         tx_ctx.new_context = 1;
2777         tx_ctx.base = (ring->dma / 128);
2778         tx_ctx.qlen = ring->count;
2779         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2780                                                I40E_FLAG_FD_ATR_ENABLED));
2781 #ifdef I40E_FCOE
2782         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2783 #endif
2784         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2785         /* FDIR VSI tx ring can still use RS bit and writebacks */
2786         if (vsi->type != I40E_VSI_FDIR)
2787                 tx_ctx.head_wb_ena = 1;
2788         tx_ctx.head_wb_addr = ring->dma +
2789                               (ring->count * sizeof(struct i40e_tx_desc));
2790
2791         /* As part of VSI creation/update, FW allocates certain
2792          * Tx arbitration queue sets for each TC enabled for
2793          * the VSI. The FW returns the handles to these queue
2794          * sets as part of the response buffer to Add VSI,
2795          * Update VSI, etc. AQ commands. It is expected that
2796          * these queue set handles be associated with the Tx
2797          * queues by the driver as part of the TX queue context
2798          * initialization. This has to be done regardless of
2799          * DCB as by default everything is mapped to TC0.
2800          */
2801         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2802         tx_ctx.rdylist_act = 0;
2803
2804         /* clear the context in the HMC */
2805         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2806         if (err) {
2807                 dev_info(&vsi->back->pdev->dev,
2808                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2809                          ring->queue_index, pf_q, err);
2810                 return -ENOMEM;
2811         }
2812
2813         /* set the context in the HMC */
2814         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2815         if (err) {
2816                 dev_info(&vsi->back->pdev->dev,
2817                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2818                          ring->queue_index, pf_q, err);
2819                 return -ENOMEM;
2820         }
2821
2822         /* Now associate this queue with this PCI function */
2823         if (vsi->type == I40E_VSI_VMDQ2) {
2824                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2825                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2826                            I40E_QTX_CTL_VFVM_INDX_MASK;
2827         } else {
2828                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2829         }
2830
2831         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2832                     I40E_QTX_CTL_PF_INDX_MASK);
2833         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2834         i40e_flush(hw);
2835
2836         /* cache tail off for easier writes later */
2837         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2838
2839         return 0;
2840 }
2841
2842 /**
2843  * i40e_configure_rx_ring - Configure a receive ring context
2844  * @ring: The Rx ring to configure
2845  *
2846  * Configure the Rx descriptor ring in the HMC context.
2847  **/
2848 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2849 {
2850         struct i40e_vsi *vsi = ring->vsi;
2851         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2852         u16 pf_q = vsi->base_queue + ring->queue_index;
2853         struct i40e_hw *hw = &vsi->back->hw;
2854         struct i40e_hmc_obj_rxq rx_ctx;
2855         i40e_status err = 0;
2856
2857         ring->state = 0;
2858
2859         /* clear the context structure first */
2860         memset(&rx_ctx, 0, sizeof(rx_ctx));
2861
2862         ring->rx_buf_len = vsi->rx_buf_len;
2863         ring->rx_hdr_len = vsi->rx_hdr_len;
2864
2865         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2866         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2867
2868         rx_ctx.base = (ring->dma / 128);
2869         rx_ctx.qlen = ring->count;
2870
2871         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2872                 set_ring_16byte_desc_enabled(ring);
2873                 rx_ctx.dsize = 0;
2874         } else {
2875                 rx_ctx.dsize = 1;
2876         }
2877
2878         rx_ctx.dtype = vsi->dtype;
2879         if (vsi->dtype) {
2880                 set_ring_ps_enabled(ring);
2881                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2882                                   I40E_RX_SPLIT_IP      |
2883                                   I40E_RX_SPLIT_TCP_UDP |
2884                                   I40E_RX_SPLIT_SCTP;
2885         } else {
2886                 rx_ctx.hsplit_0 = 0;
2887         }
2888
2889         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2890                                   (chain_len * ring->rx_buf_len));
2891         if (hw->revision_id == 0)
2892                 rx_ctx.lrxqthresh = 0;
2893         else
2894                 rx_ctx.lrxqthresh = 2;
2895         rx_ctx.crcstrip = 1;
2896         rx_ctx.l2tsel = 1;
2897         /* this controls whether VLAN is stripped from inner headers */
2898         rx_ctx.showiv = 0;
2899 #ifdef I40E_FCOE
2900         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2901 #endif
2902         /* set the prefena field to 1 because the manual says to */
2903         rx_ctx.prefena = 1;
2904
2905         /* clear the context in the HMC */
2906         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2907         if (err) {
2908                 dev_info(&vsi->back->pdev->dev,
2909                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2910                          ring->queue_index, pf_q, err);
2911                 return -ENOMEM;
2912         }
2913
2914         /* set the context in the HMC */
2915         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2916         if (err) {
2917                 dev_info(&vsi->back->pdev->dev,
2918                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2919                          ring->queue_index, pf_q, err);
2920                 return -ENOMEM;
2921         }
2922
2923         /* cache tail for quicker writes, and clear the reg before use */
2924         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2925         writel(0, ring->tail);
2926
2927         if (ring_is_ps_enabled(ring)) {
2928                 i40e_alloc_rx_headers(ring);
2929                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2930         } else {
2931                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2932         }
2933
2934         return 0;
2935 }
2936
2937 /**
2938  * i40e_vsi_configure_tx - Configure the VSI for Tx
2939  * @vsi: VSI structure describing this set of rings and resources
2940  *
2941  * Configure the Tx VSI for operation.
2942  **/
2943 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2944 {
2945         int err = 0;
2946         u16 i;
2947
2948         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2949                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2950
2951         return err;
2952 }
2953
2954 /**
2955  * i40e_vsi_configure_rx - Configure the VSI for Rx
2956  * @vsi: the VSI being configured
2957  *
2958  * Configure the Rx VSI for operation.
2959  **/
2960 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2961 {
2962         int err = 0;
2963         u16 i;
2964
2965         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2966                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2967                                + ETH_FCS_LEN + VLAN_HLEN;
2968         else
2969                 vsi->max_frame = I40E_RXBUFFER_2048;
2970
2971         /* figure out correct receive buffer length */
2972         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2973                                     I40E_FLAG_RX_PS_ENABLED)) {
2974         case I40E_FLAG_RX_1BUF_ENABLED:
2975                 vsi->rx_hdr_len = 0;
2976                 vsi->rx_buf_len = vsi->max_frame;
2977                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2978                 break;
2979         case I40E_FLAG_RX_PS_ENABLED:
2980                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2981                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2982                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2983                 break;
2984         default:
2985                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2986                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2987                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2988                 break;
2989         }
2990
2991 #ifdef I40E_FCOE
2992         /* setup rx buffer for FCoE */
2993         if ((vsi->type == I40E_VSI_FCOE) &&
2994             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2995                 vsi->rx_hdr_len = 0;
2996                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2997                 vsi->max_frame = I40E_RXBUFFER_3072;
2998                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2999         }
3000
3001 #endif /* I40E_FCOE */
3002         /* round up for the chip's needs */
3003         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
3004                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
3005         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3006                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3007
3008         /* set up individual rings */
3009         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3010                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3011
3012         return err;
3013 }
3014
3015 /**
3016  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3017  * @vsi: ptr to the VSI
3018  **/
3019 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3020 {
3021         struct i40e_ring *tx_ring, *rx_ring;
3022         u16 qoffset, qcount;
3023         int i, n;
3024
3025         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3026                 /* Reset the TC information */
3027                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3028                         rx_ring = vsi->rx_rings[i];
3029                         tx_ring = vsi->tx_rings[i];
3030                         rx_ring->dcb_tc = 0;
3031                         tx_ring->dcb_tc = 0;
3032                 }
3033         }
3034
3035         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3036                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3037                         continue;
3038
3039                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3040                 qcount = vsi->tc_config.tc_info[n].qcount;
3041                 for (i = qoffset; i < (qoffset + qcount); i++) {
3042                         rx_ring = vsi->rx_rings[i];
3043                         tx_ring = vsi->tx_rings[i];
3044                         rx_ring->dcb_tc = n;
3045                         tx_ring->dcb_tc = n;
3046                 }
3047         }
3048 }
3049
3050 /**
3051  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3052  * @vsi: ptr to the VSI
3053  **/
3054 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3055 {
3056         if (vsi->netdev)
3057                 i40e_set_rx_mode(vsi->netdev);
3058 }
3059
3060 /**
3061  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3062  * @vsi: Pointer to the targeted VSI
3063  *
3064  * This function replays the hlist on the hw where all the SB Flow Director
3065  * filters were saved.
3066  **/
3067 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3068 {
3069         struct i40e_fdir_filter *filter;
3070         struct i40e_pf *pf = vsi->back;
3071         struct hlist_node *node;
3072
3073         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3074                 return;
3075
3076         hlist_for_each_entry_safe(filter, node,
3077                                   &pf->fdir_filter_list, fdir_node) {
3078                 i40e_add_del_fdir(vsi, filter, true);
3079         }
3080 }
3081
3082 /**
3083  * i40e_vsi_configure - Set up the VSI for action
3084  * @vsi: the VSI being configured
3085  **/
3086 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3087 {
3088         int err;
3089
3090         i40e_set_vsi_rx_mode(vsi);
3091         i40e_restore_vlan(vsi);
3092         i40e_vsi_config_dcb_rings(vsi);
3093         err = i40e_vsi_configure_tx(vsi);
3094         if (!err)
3095                 err = i40e_vsi_configure_rx(vsi);
3096
3097         return err;
3098 }
3099
3100 /**
3101  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3102  * @vsi: the VSI being configured
3103  **/
3104 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3105 {
3106         struct i40e_pf *pf = vsi->back;
3107         struct i40e_hw *hw = &pf->hw;
3108         u16 vector;
3109         int i, q;
3110         u32 qp;
3111
3112         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3113          * and PFINT_LNKLSTn registers, e.g.:
3114          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3115          */
3116         qp = vsi->base_queue;
3117         vector = vsi->base_vector;
3118         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3119                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3120
3121                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3122                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3123                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3124                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3125                      q_vector->rx.itr);
3126                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3127                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3128                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3129                      q_vector->tx.itr);
3130                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3131                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3132
3133                 /* Linked list for the queuepairs assigned to this vector */
3134                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3135                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3136                         u32 val;
3137
3138                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3139                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3140                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3141                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3142                               (I40E_QUEUE_TYPE_TX
3143                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3144
3145                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3146
3147                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3148                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3149                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3150                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3151                               (I40E_QUEUE_TYPE_RX
3152                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3153
3154                         /* Terminate the linked list */
3155                         if (q == (q_vector->num_ringpairs - 1))
3156                                 val |= (I40E_QUEUE_END_OF_LIST
3157                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3158
3159                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3160                         qp++;
3161                 }
3162         }
3163
3164         i40e_flush(hw);
3165 }
3166
3167 /**
3168  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3169  * @hw: ptr to the hardware info
3170  **/
3171 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3172 {
3173         struct i40e_hw *hw = &pf->hw;
3174         u32 val;
3175
3176         /* clear things first */
3177         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3178         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3179
3180         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3181               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3182               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3183               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3184               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3185               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3186               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3187               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3188
3189         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3190                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3191
3192         if (pf->flags & I40E_FLAG_PTP)
3193                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3194
3195         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3196
3197         /* SW_ITR_IDX = 0, but don't change INTENA */
3198         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3199                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3200
3201         /* OTHER_ITR_IDX = 0 */
3202         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3203 }
3204
3205 /**
3206  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3207  * @vsi: the VSI being configured
3208  **/
3209 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3210 {
3211         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3212         struct i40e_pf *pf = vsi->back;
3213         struct i40e_hw *hw = &pf->hw;
3214         u32 val;
3215
3216         /* set the ITR configuration */
3217         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3218         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3219         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3220         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3221         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3222         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3223         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3224
3225         i40e_enable_misc_int_causes(pf);
3226
3227         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3228         wr32(hw, I40E_PFINT_LNKLST0, 0);
3229
3230         /* Associate the queue pair to the vector and enable the queue int */
3231         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3232               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3233               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3234
3235         wr32(hw, I40E_QINT_RQCTL(0), val);
3236
3237         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3238               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3239               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3240
3241         wr32(hw, I40E_QINT_TQCTL(0), val);
3242         i40e_flush(hw);
3243 }
3244
3245 /**
3246  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3247  * @pf: board private structure
3248  **/
3249 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3250 {
3251         struct i40e_hw *hw = &pf->hw;
3252
3253         wr32(hw, I40E_PFINT_DYN_CTL0,
3254              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3255         i40e_flush(hw);
3256 }
3257
3258 /**
3259  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3260  * @pf: board private structure
3261  **/
3262 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3263 {
3264         struct i40e_hw *hw = &pf->hw;
3265         u32 val;
3266
3267         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3268               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3269               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3270
3271         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3272         i40e_flush(hw);
3273 }
3274
3275 /**
3276  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3277  * @irq: interrupt number
3278  * @data: pointer to a q_vector
3279  **/
3280 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3281 {
3282         struct i40e_q_vector *q_vector = data;
3283
3284         if (!q_vector->tx.ring && !q_vector->rx.ring)
3285                 return IRQ_HANDLED;
3286
3287         napi_schedule_irqoff(&q_vector->napi);
3288
3289         return IRQ_HANDLED;
3290 }
3291
3292 /**
3293  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3294  * @vsi: the VSI being configured
3295  * @basename: name for the vector
3296  *
3297  * Allocates MSI-X vectors and requests interrupts from the kernel.
3298  **/
3299 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3300 {
3301         int q_vectors = vsi->num_q_vectors;
3302         struct i40e_pf *pf = vsi->back;
3303         int base = vsi->base_vector;
3304         int rx_int_idx = 0;
3305         int tx_int_idx = 0;
3306         int vector, err;
3307
3308         for (vector = 0; vector < q_vectors; vector++) {
3309                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3310
3311                 if (q_vector->tx.ring && q_vector->rx.ring) {
3312                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3313                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3314                         tx_int_idx++;
3315                 } else if (q_vector->rx.ring) {
3316                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3317                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3318                 } else if (q_vector->tx.ring) {
3319                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3320                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3321                 } else {
3322                         /* skip this unused q_vector */
3323                         continue;
3324                 }
3325                 err = request_irq(pf->msix_entries[base + vector].vector,
3326                                   vsi->irq_handler,
3327                                   0,
3328                                   q_vector->name,
3329                                   q_vector);
3330                 if (err) {
3331                         dev_info(&pf->pdev->dev,
3332                                  "MSIX request_irq failed, error: %d\n", err);
3333                         goto free_queue_irqs;
3334                 }
3335                 /* assign the mask for this irq */
3336                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3337                                       &q_vector->affinity_mask);
3338         }
3339
3340         vsi->irqs_ready = true;
3341         return 0;
3342
3343 free_queue_irqs:
3344         while (vector) {
3345                 vector--;
3346                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3347                                       NULL);
3348                 free_irq(pf->msix_entries[base + vector].vector,
3349                          &(vsi->q_vectors[vector]));
3350         }
3351         return err;
3352 }
3353
3354 /**
3355  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3356  * @vsi: the VSI being un-configured
3357  **/
3358 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3359 {
3360         struct i40e_pf *pf = vsi->back;
3361         struct i40e_hw *hw = &pf->hw;
3362         int base = vsi->base_vector;
3363         int i;
3364
3365         for (i = 0; i < vsi->num_queue_pairs; i++) {
3366                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3367                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3368         }
3369
3370         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3371                 for (i = vsi->base_vector;
3372                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3373                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3374
3375                 i40e_flush(hw);
3376                 for (i = 0; i < vsi->num_q_vectors; i++)
3377                         synchronize_irq(pf->msix_entries[i + base].vector);
3378         } else {
3379                 /* Legacy and MSI mode - this stops all interrupt handling */
3380                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3381                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3382                 i40e_flush(hw);
3383                 synchronize_irq(pf->pdev->irq);
3384         }
3385 }
3386
3387 /**
3388  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3389  * @vsi: the VSI being configured
3390  **/
3391 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3392 {
3393         struct i40e_pf *pf = vsi->back;
3394         int i;
3395
3396         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3397                 for (i = 0; i < vsi->num_q_vectors; i++)
3398                         i40e_irq_dynamic_enable(vsi, i);
3399         } else {
3400                 i40e_irq_dynamic_enable_icr0(pf);
3401         }
3402
3403         i40e_flush(&pf->hw);
3404         return 0;
3405 }
3406
3407 /**
3408  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3409  * @pf: board private structure
3410  **/
3411 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3412 {
3413         /* Disable ICR 0 */
3414         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3415         i40e_flush(&pf->hw);
3416 }
3417
3418 /**
3419  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3420  * @irq: interrupt number
3421  * @data: pointer to a q_vector
3422  *
3423  * This is the handler used for all MSI/Legacy interrupts, and deals
3424  * with both queue and non-queue interrupts.  This is also used in
3425  * MSIX mode to handle the non-queue interrupts.
3426  **/
3427 static irqreturn_t i40e_intr(int irq, void *data)
3428 {
3429         struct i40e_pf *pf = (struct i40e_pf *)data;
3430         struct i40e_hw *hw = &pf->hw;
3431         irqreturn_t ret = IRQ_NONE;
3432         u32 icr0, icr0_remaining;
3433         u32 val, ena_mask;
3434
3435         icr0 = rd32(hw, I40E_PFINT_ICR0);
3436         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3437
3438         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3439         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3440                 goto enable_intr;
3441
3442         /* if interrupt but no bits showing, must be SWINT */
3443         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3444             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3445                 pf->sw_int_count++;
3446
3447         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3448             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3449                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3450                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3451                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3452         }
3453
3454         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3455         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3456                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3457                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3458
3459                 /* temporarily disable queue cause for NAPI processing */
3460                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3461
3462                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3463                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3464
3465                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3466                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3467                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3468
3469                 if (!test_bit(__I40E_DOWN, &pf->state))
3470                         napi_schedule_irqoff(&q_vector->napi);
3471         }
3472
3473         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3474                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3475                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3476         }
3477
3478         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3479                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3480                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3481         }
3482
3483         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3484                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3485                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3486         }
3487
3488         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3489                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3490                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3491                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3492                 val = rd32(hw, I40E_GLGEN_RSTAT);
3493                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3494                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3495                 if (val == I40E_RESET_CORER) {
3496                         pf->corer_count++;
3497                 } else if (val == I40E_RESET_GLOBR) {
3498                         pf->globr_count++;
3499                 } else if (val == I40E_RESET_EMPR) {
3500                         pf->empr_count++;
3501                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3502                 }
3503         }
3504
3505         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3506                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3507                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3508                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3509                          rd32(hw, I40E_PFHMC_ERRORINFO),
3510                          rd32(hw, I40E_PFHMC_ERRORDATA));
3511         }
3512
3513         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3514                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3515
3516                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3517                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3518                         i40e_ptp_tx_hwtstamp(pf);
3519                 }
3520         }
3521
3522         /* If a critical error is pending we have no choice but to reset the
3523          * device.
3524          * Report and mask out any remaining unexpected interrupts.
3525          */
3526         icr0_remaining = icr0 & ena_mask;
3527         if (icr0_remaining) {
3528                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3529                          icr0_remaining);
3530                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3531                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3532                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3533                         dev_info(&pf->pdev->dev, "device will be reset\n");
3534                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3535                         i40e_service_event_schedule(pf);
3536                 }
3537                 ena_mask &= ~icr0_remaining;
3538         }
3539         ret = IRQ_HANDLED;
3540
3541 enable_intr:
3542         /* re-enable interrupt causes */
3543         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3544         if (!test_bit(__I40E_DOWN, &pf->state)) {
3545                 i40e_service_event_schedule(pf);
3546                 i40e_irq_dynamic_enable_icr0(pf);
3547         }
3548
3549         return ret;
3550 }
3551
3552 /**
3553  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3554  * @tx_ring:  tx ring to clean
3555  * @budget:   how many cleans we're allowed
3556  *
3557  * Returns true if there's any budget left (e.g. the clean is finished)
3558  **/
3559 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3560 {
3561         struct i40e_vsi *vsi = tx_ring->vsi;
3562         u16 i = tx_ring->next_to_clean;
3563         struct i40e_tx_buffer *tx_buf;
3564         struct i40e_tx_desc *tx_desc;
3565
3566         tx_buf = &tx_ring->tx_bi[i];
3567         tx_desc = I40E_TX_DESC(tx_ring, i);
3568         i -= tx_ring->count;
3569
3570         do {
3571                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3572
3573                 /* if next_to_watch is not set then there is no work pending */
3574                 if (!eop_desc)
3575                         break;
3576
3577                 /* prevent any other reads prior to eop_desc */
3578                 read_barrier_depends();
3579
3580                 /* if the descriptor isn't done, no work yet to do */
3581                 if (!(eop_desc->cmd_type_offset_bsz &
3582                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3583                         break;
3584
3585                 /* clear next_to_watch to prevent false hangs */
3586                 tx_buf->next_to_watch = NULL;
3587
3588                 tx_desc->buffer_addr = 0;
3589                 tx_desc->cmd_type_offset_bsz = 0;
3590                 /* move past filter desc */
3591                 tx_buf++;
3592                 tx_desc++;
3593                 i++;
3594                 if (unlikely(!i)) {
3595                         i -= tx_ring->count;
3596                         tx_buf = tx_ring->tx_bi;
3597                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3598                 }
3599                 /* unmap skb header data */
3600                 dma_unmap_single(tx_ring->dev,
3601                                  dma_unmap_addr(tx_buf, dma),
3602                                  dma_unmap_len(tx_buf, len),
3603                                  DMA_TO_DEVICE);
3604                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3605                         kfree(tx_buf->raw_buf);
3606
3607                 tx_buf->raw_buf = NULL;
3608                 tx_buf->tx_flags = 0;
3609                 tx_buf->next_to_watch = NULL;
3610                 dma_unmap_len_set(tx_buf, len, 0);
3611                 tx_desc->buffer_addr = 0;
3612                 tx_desc->cmd_type_offset_bsz = 0;
3613
3614                 /* move us past the eop_desc for start of next FD desc */
3615                 tx_buf++;
3616                 tx_desc++;
3617                 i++;
3618                 if (unlikely(!i)) {
3619                         i -= tx_ring->count;
3620                         tx_buf = tx_ring->tx_bi;
3621                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3622                 }
3623
3624                 /* update budget accounting */
3625                 budget--;
3626         } while (likely(budget));
3627
3628         i += tx_ring->count;
3629         tx_ring->next_to_clean = i;
3630
3631         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3632                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3633
3634         return budget > 0;
3635 }
3636
3637 /**
3638  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3639  * @irq: interrupt number
3640  * @data: pointer to a q_vector
3641  **/
3642 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3643 {
3644         struct i40e_q_vector *q_vector = data;
3645         struct i40e_vsi *vsi;
3646
3647         if (!q_vector->tx.ring)
3648                 return IRQ_HANDLED;
3649
3650         vsi = q_vector->tx.ring->vsi;
3651         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3652
3653         return IRQ_HANDLED;
3654 }
3655
3656 /**
3657  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3658  * @vsi: the VSI being configured
3659  * @v_idx: vector index
3660  * @qp_idx: queue pair index
3661  **/
3662 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3663 {
3664         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3665         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3666         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3667
3668         tx_ring->q_vector = q_vector;
3669         tx_ring->next = q_vector->tx.ring;
3670         q_vector->tx.ring = tx_ring;
3671         q_vector->tx.count++;
3672
3673         rx_ring->q_vector = q_vector;
3674         rx_ring->next = q_vector->rx.ring;
3675         q_vector->rx.ring = rx_ring;
3676         q_vector->rx.count++;
3677 }
3678
3679 /**
3680  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3681  * @vsi: the VSI being configured
3682  *
3683  * This function maps descriptor rings to the queue-specific vectors
3684  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3685  * one vector per queue pair, but on a constrained vector budget, we
3686  * group the queue pairs as "efficiently" as possible.
3687  **/
3688 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3689 {
3690         int qp_remaining = vsi->num_queue_pairs;
3691         int q_vectors = vsi->num_q_vectors;
3692         int num_ringpairs;
3693         int v_start = 0;
3694         int qp_idx = 0;
3695
3696         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3697          * group them so there are multiple queues per vector.
3698          * It is also important to go through all the vectors available to be
3699          * sure that if we don't use all the vectors, that the remaining vectors
3700          * are cleared. This is especially important when decreasing the
3701          * number of queues in use.
3702          */
3703         for (; v_start < q_vectors; v_start++) {
3704                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3705
3706                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3707
3708                 q_vector->num_ringpairs = num_ringpairs;
3709
3710                 q_vector->rx.count = 0;
3711                 q_vector->tx.count = 0;
3712                 q_vector->rx.ring = NULL;
3713                 q_vector->tx.ring = NULL;
3714
3715                 while (num_ringpairs--) {
3716                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3717                         qp_idx++;
3718                         qp_remaining--;
3719                 }
3720         }
3721 }
3722
3723 /**
3724  * i40e_vsi_request_irq - Request IRQ from the OS
3725  * @vsi: the VSI being configured
3726  * @basename: name for the vector
3727  **/
3728 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3729 {
3730         struct i40e_pf *pf = vsi->back;
3731         int err;
3732
3733         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3734                 err = i40e_vsi_request_irq_msix(vsi, basename);
3735         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3736                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3737                                   pf->int_name, pf);
3738         else
3739                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3740                                   pf->int_name, pf);
3741
3742         if (err)
3743                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3744
3745         return err;
3746 }
3747
3748 #ifdef CONFIG_NET_POLL_CONTROLLER
3749 /**
3750  * i40e_netpoll - A Polling 'interrupt' handler
3751  * @netdev: network interface device structure
3752  *
3753  * This is used by netconsole to send skbs without having to re-enable
3754  * interrupts.  It's not called while the normal interrupt routine is executing.
3755  **/
3756 #ifdef I40E_FCOE
3757 void i40e_netpoll(struct net_device *netdev)
3758 #else
3759 static void i40e_netpoll(struct net_device *netdev)
3760 #endif
3761 {
3762         struct i40e_netdev_priv *np = netdev_priv(netdev);
3763         struct i40e_vsi *vsi = np->vsi;
3764         struct i40e_pf *pf = vsi->back;
3765         int i;
3766
3767         /* if interface is down do nothing */
3768         if (test_bit(__I40E_DOWN, &vsi->state))
3769                 return;
3770
3771         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3772                 for (i = 0; i < vsi->num_q_vectors; i++)
3773                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3774         } else {
3775                 i40e_intr(pf->pdev->irq, netdev);
3776         }
3777 }
3778 #endif
3779
3780 /**
3781  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3782  * @pf: the PF being configured
3783  * @pf_q: the PF queue
3784  * @enable: enable or disable state of the queue
3785  *
3786  * This routine will wait for the given Tx queue of the PF to reach the
3787  * enabled or disabled state.
3788  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3789  * multiple retries; else will return 0 in case of success.
3790  **/
3791 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3792 {
3793         int i;
3794         u32 tx_reg;
3795
3796         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3797                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3798                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3799                         break;
3800
3801                 usleep_range(10, 20);
3802         }
3803         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3804                 return -ETIMEDOUT;
3805
3806         return 0;
3807 }
3808
3809 /**
3810  * i40e_vsi_control_tx - Start or stop a VSI's rings
3811  * @vsi: the VSI being configured
3812  * @enable: start or stop the rings
3813  **/
3814 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3815 {
3816         struct i40e_pf *pf = vsi->back;
3817         struct i40e_hw *hw = &pf->hw;
3818         int i, j, pf_q, ret = 0;
3819         u32 tx_reg;
3820
3821         pf_q = vsi->base_queue;
3822         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3823
3824                 /* warn the TX unit of coming changes */
3825                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3826                 if (!enable)
3827                         usleep_range(10, 20);
3828
3829                 for (j = 0; j < 50; j++) {
3830                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3831                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3832                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3833                                 break;
3834                         usleep_range(1000, 2000);
3835                 }
3836                 /* Skip if the queue is already in the requested state */
3837                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3838                         continue;
3839
3840                 /* turn on/off the queue */
3841                 if (enable) {
3842                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3843                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3844                 } else {
3845                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3846                 }
3847
3848                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3849                 /* No waiting for the Tx queue to disable */
3850                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3851                         continue;
3852
3853                 /* wait for the change to finish */
3854                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3855                 if (ret) {
3856                         dev_info(&pf->pdev->dev,
3857                                  "VSI seid %d Tx ring %d %sable timeout\n",
3858                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3859                         break;
3860                 }
3861         }
3862
3863         if (hw->revision_id == 0)
3864                 mdelay(50);
3865         return ret;
3866 }
3867
3868 /**
3869  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3870  * @pf: the PF being configured
3871  * @pf_q: the PF queue
3872  * @enable: enable or disable state of the queue
3873  *
3874  * This routine will wait for the given Rx queue of the PF to reach the
3875  * enabled or disabled state.
3876  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3877  * multiple retries; else will return 0 in case of success.
3878  **/
3879 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3880 {
3881         int i;
3882         u32 rx_reg;
3883
3884         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3885                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3886                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3887                         break;
3888
3889                 usleep_range(10, 20);
3890         }
3891         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3892                 return -ETIMEDOUT;
3893
3894         return 0;
3895 }
3896
3897 /**
3898  * i40e_vsi_control_rx - Start or stop a VSI's rings
3899  * @vsi: the VSI being configured
3900  * @enable: start or stop the rings
3901  **/
3902 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3903 {
3904         struct i40e_pf *pf = vsi->back;
3905         struct i40e_hw *hw = &pf->hw;
3906         int i, j, pf_q, ret = 0;
3907         u32 rx_reg;
3908
3909         pf_q = vsi->base_queue;
3910         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3911                 for (j = 0; j < 50; j++) {
3912                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3913                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3914                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3915                                 break;
3916                         usleep_range(1000, 2000);
3917                 }
3918
3919                 /* Skip if the queue is already in the requested state */
3920                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3921                         continue;
3922
3923                 /* turn on/off the queue */
3924                 if (enable)
3925                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3926                 else
3927                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3928                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3929
3930                 /* wait for the change to finish */
3931                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3932                 if (ret) {
3933                         dev_info(&pf->pdev->dev,
3934                                  "VSI seid %d Rx ring %d %sable timeout\n",
3935                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3936                         break;
3937                 }
3938         }
3939
3940         return ret;
3941 }
3942
3943 /**
3944  * i40e_vsi_control_rings - Start or stop a VSI's rings
3945  * @vsi: the VSI being configured
3946  * @enable: start or stop the rings
3947  **/
3948 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3949 {
3950         int ret = 0;
3951
3952         /* do rx first for enable and last for disable */
3953         if (request) {
3954                 ret = i40e_vsi_control_rx(vsi, request);
3955                 if (ret)
3956                         return ret;
3957                 ret = i40e_vsi_control_tx(vsi, request);
3958         } else {
3959                 /* Ignore return value, we need to shutdown whatever we can */
3960                 i40e_vsi_control_tx(vsi, request);
3961                 i40e_vsi_control_rx(vsi, request);
3962         }
3963
3964         return ret;
3965 }
3966
3967 /**
3968  * i40e_vsi_free_irq - Free the irq association with the OS
3969  * @vsi: the VSI being configured
3970  **/
3971 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3972 {
3973         struct i40e_pf *pf = vsi->back;
3974         struct i40e_hw *hw = &pf->hw;
3975         int base = vsi->base_vector;
3976         u32 val, qp;
3977         int i;
3978
3979         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3980                 if (!vsi->q_vectors)
3981                         return;
3982
3983                 if (!vsi->irqs_ready)
3984                         return;
3985
3986                 vsi->irqs_ready = false;
3987                 for (i = 0; i < vsi->num_q_vectors; i++) {
3988                         u16 vector = i + base;
3989
3990                         /* free only the irqs that were actually requested */
3991                         if (!vsi->q_vectors[i] ||
3992                             !vsi->q_vectors[i]->num_ringpairs)
3993                                 continue;
3994
3995                         /* clear the affinity_mask in the IRQ descriptor */
3996                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3997                                               NULL);
3998                         free_irq(pf->msix_entries[vector].vector,
3999                                  vsi->q_vectors[i]);
4000
4001                         /* Tear down the interrupt queue link list
4002                          *
4003                          * We know that they come in pairs and always
4004                          * the Rx first, then the Tx.  To clear the
4005                          * link list, stick the EOL value into the
4006                          * next_q field of the registers.
4007                          */
4008                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4009                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4010                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4011                         val |= I40E_QUEUE_END_OF_LIST
4012                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4013                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4014
4015                         while (qp != I40E_QUEUE_END_OF_LIST) {
4016                                 u32 next;
4017
4018                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4019
4020                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4021                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4022                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4023                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4024
4025                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4026                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4027
4028                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4029
4030                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4031
4032                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4033                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4034
4035                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4036                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4037                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4038                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4039
4040                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4041                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4042
4043                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4044                                 qp = next;
4045                         }
4046                 }
4047         } else {
4048                 free_irq(pf->pdev->irq, pf);
4049
4050                 val = rd32(hw, I40E_PFINT_LNKLST0);
4051                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4052                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4053                 val |= I40E_QUEUE_END_OF_LIST
4054                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4055                 wr32(hw, I40E_PFINT_LNKLST0, val);
4056
4057                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4058                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4059                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4060                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4061                          I40E_QINT_RQCTL_INTEVENT_MASK);
4062
4063                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4064                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4065
4066                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4067
4068                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4069
4070                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4071                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4072                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4073                          I40E_QINT_TQCTL_INTEVENT_MASK);
4074
4075                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4076                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4077
4078                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4079         }
4080 }
4081
4082 /**
4083  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4084  * @vsi: the VSI being configured
4085  * @v_idx: Index of vector to be freed
4086  *
4087  * This function frees the memory allocated to the q_vector.  In addition if
4088  * NAPI is enabled it will delete any references to the NAPI struct prior
4089  * to freeing the q_vector.
4090  **/
4091 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4092 {
4093         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4094         struct i40e_ring *ring;
4095
4096         if (!q_vector)
4097                 return;
4098
4099         /* disassociate q_vector from rings */
4100         i40e_for_each_ring(ring, q_vector->tx)
4101                 ring->q_vector = NULL;
4102
4103         i40e_for_each_ring(ring, q_vector->rx)
4104                 ring->q_vector = NULL;
4105
4106         /* only VSI w/ an associated netdev is set up w/ NAPI */
4107         if (vsi->netdev)
4108                 netif_napi_del(&q_vector->napi);
4109
4110         vsi->q_vectors[v_idx] = NULL;
4111
4112         kfree_rcu(q_vector, rcu);
4113 }
4114
4115 /**
4116  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4117  * @vsi: the VSI being un-configured
4118  *
4119  * This frees the memory allocated to the q_vectors and
4120  * deletes references to the NAPI struct.
4121  **/
4122 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4123 {
4124         int v_idx;
4125
4126         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4127                 i40e_free_q_vector(vsi, v_idx);
4128 }
4129
4130 /**
4131  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4132  * @pf: board private structure
4133  **/
4134 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4135 {
4136         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4137         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4138                 pci_disable_msix(pf->pdev);
4139                 kfree(pf->msix_entries);
4140                 pf->msix_entries = NULL;
4141                 kfree(pf->irq_pile);
4142                 pf->irq_pile = NULL;
4143         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4144                 pci_disable_msi(pf->pdev);
4145         }
4146         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4147 }
4148
4149 /**
4150  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4151  * @pf: board private structure
4152  *
4153  * We go through and clear interrupt specific resources and reset the structure
4154  * to pre-load conditions
4155  **/
4156 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4157 {
4158         int i;
4159
4160         i40e_stop_misc_vector(pf);
4161         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4162                 synchronize_irq(pf->msix_entries[0].vector);
4163                 free_irq(pf->msix_entries[0].vector, pf);
4164         }
4165
4166         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4167         for (i = 0; i < pf->num_alloc_vsi; i++)
4168                 if (pf->vsi[i])
4169                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4170         i40e_reset_interrupt_capability(pf);
4171 }
4172
4173 /**
4174  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4175  * @vsi: the VSI being configured
4176  **/
4177 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4178 {
4179         int q_idx;
4180
4181         if (!vsi->netdev)
4182                 return;
4183
4184         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4185                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4186 }
4187
4188 /**
4189  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4190  * @vsi: the VSI being configured
4191  **/
4192 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4193 {
4194         int q_idx;
4195
4196         if (!vsi->netdev)
4197                 return;
4198
4199         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4200                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4201 }
4202
4203 /**
4204  * i40e_vsi_close - Shut down a VSI
4205  * @vsi: the vsi to be quelled
4206  **/
4207 static void i40e_vsi_close(struct i40e_vsi *vsi)
4208 {
4209         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4210                 i40e_down(vsi);
4211         i40e_vsi_free_irq(vsi);
4212         i40e_vsi_free_tx_resources(vsi);
4213         i40e_vsi_free_rx_resources(vsi);
4214         vsi->current_netdev_flags = 0;
4215 }
4216
4217 /**
4218  * i40e_quiesce_vsi - Pause a given VSI
4219  * @vsi: the VSI being paused
4220  **/
4221 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4222 {
4223         if (test_bit(__I40E_DOWN, &vsi->state))
4224                 return;
4225
4226         /* No need to disable FCoE VSI when Tx suspended */
4227         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4228             vsi->type == I40E_VSI_FCOE) {
4229                 dev_dbg(&vsi->back->pdev->dev,
4230                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4231                 return;
4232         }
4233
4234         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4235         if (vsi->netdev && netif_running(vsi->netdev))
4236                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4237         else
4238                 i40e_vsi_close(vsi);
4239 }
4240
4241 /**
4242  * i40e_unquiesce_vsi - Resume a given VSI
4243  * @vsi: the VSI being resumed
4244  **/
4245 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4246 {
4247         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4248                 return;
4249
4250         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4251         if (vsi->netdev && netif_running(vsi->netdev))
4252                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4253         else
4254                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4255 }
4256
4257 /**
4258  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4259  * @pf: the PF
4260  **/
4261 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4262 {
4263         int v;
4264
4265         for (v = 0; v < pf->num_alloc_vsi; v++) {
4266                 if (pf->vsi[v])
4267                         i40e_quiesce_vsi(pf->vsi[v]);
4268         }
4269 }
4270
4271 /**
4272  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4273  * @pf: the PF
4274  **/
4275 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4276 {
4277         int v;
4278
4279         for (v = 0; v < pf->num_alloc_vsi; v++) {
4280                 if (pf->vsi[v])
4281                         i40e_unquiesce_vsi(pf->vsi[v]);
4282         }
4283 }
4284
4285 #ifdef CONFIG_I40E_DCB
4286 /**
4287  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4288  * @vsi: the VSI being configured
4289  *
4290  * This function waits for the given VSI's Tx queues to be disabled.
4291  **/
4292 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4293 {
4294         struct i40e_pf *pf = vsi->back;
4295         int i, pf_q, ret;
4296
4297         pf_q = vsi->base_queue;
4298         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4299                 /* Check and wait for the disable status of the queue */
4300                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4301                 if (ret) {
4302                         dev_info(&pf->pdev->dev,
4303                                  "VSI seid %d Tx ring %d disable timeout\n",
4304                                  vsi->seid, pf_q);
4305                         return ret;
4306                 }
4307         }
4308
4309         return 0;
4310 }
4311
4312 /**
4313  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4314  * @pf: the PF
4315  *
4316  * This function waits for the Tx queues to be in disabled state for all the
4317  * VSIs that are managed by this PF.
4318  **/
4319 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4320 {
4321         int v, ret = 0;
4322
4323         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4324                 /* No need to wait for FCoE VSI queues */
4325                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4326                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4327                         if (ret)
4328                                 break;
4329                 }
4330         }
4331
4332         return ret;
4333 }
4334
4335 #endif
4336
4337 /**
4338  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4339  * @q_idx: TX queue number
4340  * @vsi: Pointer to VSI struct
4341  *
4342  * This function checks specified queue for given VSI. Detects hung condition.
4343  * Sets hung bit since it is two step process. Before next run of service task
4344  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4345  * hung condition remain unchanged and during subsequent run, this function
4346  * issues SW interrupt to recover from hung condition.
4347  **/
4348 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4349 {
4350         struct i40e_ring *tx_ring = NULL;
4351         struct i40e_pf  *pf;
4352         u32 head, val, tx_pending;
4353         int i;
4354
4355         pf = vsi->back;
4356
4357         /* now that we have an index, find the tx_ring struct */
4358         for (i = 0; i < vsi->num_queue_pairs; i++) {
4359                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4360                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4361                                 tx_ring = vsi->tx_rings[i];
4362                                 break;
4363                         }
4364                 }
4365         }
4366
4367         if (!tx_ring)
4368                 return;
4369
4370         /* Read interrupt register */
4371         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4372                 val = rd32(&pf->hw,
4373                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4374                                                tx_ring->vsi->base_vector - 1));
4375         else
4376                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4377
4378         /* Bail out if interrupts are disabled because napi_poll
4379          * execution in-progress or will get scheduled soon.
4380          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4381          */
4382         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4383                 return;
4384
4385         head = i40e_get_head(tx_ring);
4386
4387         tx_pending = i40e_get_tx_pending(tx_ring);
4388
4389         /* HW is done executing descriptors, updated HEAD write back,
4390          * but SW hasn't processed those descriptors. If interrupt is
4391          * not generated from this point ON, it could result into
4392          * dev_watchdog detecting timeout on those netdev_queue,
4393          * hence proactively trigger SW interrupt.
4394          */
4395         if (tx_pending) {
4396                 /* NAPI Poll didn't run and clear since it was set */
4397                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4398                                        &tx_ring->q_vector->hung_detected)) {
4399                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4400                                     vsi->seid, q_idx, tx_pending,
4401                                     tx_ring->next_to_clean, head,
4402                                     tx_ring->next_to_use,
4403                                     readl(tx_ring->tail));
4404                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4405                                     vsi->seid, q_idx, val);
4406                         i40e_force_wb(vsi, tx_ring->q_vector);
4407                 } else {
4408                         /* First Chance - detected possible hung */
4409                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4410                                 &tx_ring->q_vector->hung_detected);
4411                 }
4412         }
4413 }
4414
4415 /**
4416  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4417  * @pf:  pointer to PF struct
4418  *
4419  * LAN VSI has netdev and netdev has TX queues. This function is to check
4420  * each of those TX queues if they are hung, trigger recovery by issuing
4421  * SW interrupt.
4422  **/
4423 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4424 {
4425         struct net_device *netdev;
4426         struct i40e_vsi *vsi;
4427         int i;
4428
4429         /* Only for LAN VSI */
4430         vsi = pf->vsi[pf->lan_vsi];
4431
4432         if (!vsi)
4433                 return;
4434
4435         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4436         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4437             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4438                 return;
4439
4440         /* Make sure type is MAIN VSI */
4441         if (vsi->type != I40E_VSI_MAIN)
4442                 return;
4443
4444         netdev = vsi->netdev;
4445         if (!netdev)
4446                 return;
4447
4448         /* Bail out if netif_carrier is not OK */
4449         if (!netif_carrier_ok(netdev))
4450                 return;
4451
4452         /* Go thru' TX queues for netdev */
4453         for (i = 0; i < netdev->num_tx_queues; i++) {
4454                 struct netdev_queue *q;
4455
4456                 q = netdev_get_tx_queue(netdev, i);
4457                 if (q)
4458                         i40e_detect_recover_hung_queue(i, vsi);
4459         }
4460 }
4461
4462 /**
4463  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4464  * @pf: pointer to PF
4465  *
4466  * Get TC map for ISCSI PF type that will include iSCSI TC
4467  * and LAN TC.
4468  **/
4469 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4470 {
4471         struct i40e_dcb_app_priority_table app;
4472         struct i40e_hw *hw = &pf->hw;
4473         u8 enabled_tc = 1; /* TC0 is always enabled */
4474         u8 tc, i;
4475         /* Get the iSCSI APP TLV */
4476         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4477
4478         for (i = 0; i < dcbcfg->numapps; i++) {
4479                 app = dcbcfg->app[i];
4480                 if (app.selector == I40E_APP_SEL_TCPIP &&
4481                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4482                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4483                         enabled_tc |= BIT(tc);
4484                         break;
4485                 }
4486         }
4487
4488         return enabled_tc;
4489 }
4490
4491 /**
4492  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4493  * @dcbcfg: the corresponding DCBx configuration structure
4494  *
4495  * Return the number of TCs from given DCBx configuration
4496  **/
4497 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4498 {
4499         u8 num_tc = 0;
4500         int i;
4501
4502         /* Scan the ETS Config Priority Table to find
4503          * traffic class enabled for a given priority
4504          * and use the traffic class index to get the
4505          * number of traffic classes enabled
4506          */
4507         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4508                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4509                         num_tc = dcbcfg->etscfg.prioritytable[i];
4510         }
4511
4512         /* Traffic class index starts from zero so
4513          * increment to return the actual count
4514          */
4515         return num_tc + 1;
4516 }
4517
4518 /**
4519  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4520  * @dcbcfg: the corresponding DCBx configuration structure
4521  *
4522  * Query the current DCB configuration and return the number of
4523  * traffic classes enabled from the given DCBX config
4524  **/
4525 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4526 {
4527         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4528         u8 enabled_tc = 1;
4529         u8 i;
4530
4531         for (i = 0; i < num_tc; i++)
4532                 enabled_tc |= BIT(i);
4533
4534         return enabled_tc;
4535 }
4536
4537 /**
4538  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4539  * @pf: PF being queried
4540  *
4541  * Return number of traffic classes enabled for the given PF
4542  **/
4543 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4544 {
4545         struct i40e_hw *hw = &pf->hw;
4546         u8 i, enabled_tc;
4547         u8 num_tc = 0;
4548         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4549
4550         /* If DCB is not enabled then always in single TC */
4551         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4552                 return 1;
4553
4554         /* SFP mode will be enabled for all TCs on port */
4555         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4556                 return i40e_dcb_get_num_tc(dcbcfg);
4557
4558         /* MFP mode return count of enabled TCs for this PF */
4559         if (pf->hw.func_caps.iscsi)
4560                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4561         else
4562                 return 1; /* Only TC0 */
4563
4564         /* At least have TC0 */
4565         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4566         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4567                 if (enabled_tc & BIT(i))
4568                         num_tc++;
4569         }
4570         return num_tc;
4571 }
4572
4573 /**
4574  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4575  * @pf: PF being queried
4576  *
4577  * Return a bitmap for first enabled traffic class for this PF.
4578  **/
4579 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4580 {
4581         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4582         u8 i = 0;
4583
4584         if (!enabled_tc)
4585                 return 0x1; /* TC0 */
4586
4587         /* Find the first enabled TC */
4588         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4589                 if (enabled_tc & BIT(i))
4590                         break;
4591         }
4592
4593         return BIT(i);
4594 }
4595
4596 /**
4597  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4598  * @pf: PF being queried
4599  *
4600  * Return a bitmap for enabled traffic classes for this PF.
4601  **/
4602 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4603 {
4604         /* If DCB is not enabled for this PF then just return default TC */
4605         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4606                 return i40e_pf_get_default_tc(pf);
4607
4608         /* SFP mode we want PF to be enabled for all TCs */
4609         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4610                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4611
4612         /* MFP enabled and iSCSI PF type */
4613         if (pf->hw.func_caps.iscsi)
4614                 return i40e_get_iscsi_tc_map(pf);
4615         else
4616                 return i40e_pf_get_default_tc(pf);
4617 }
4618
4619 /**
4620  * i40e_vsi_get_bw_info - Query VSI BW Information
4621  * @vsi: the VSI being queried
4622  *
4623  * Returns 0 on success, negative value on failure
4624  **/
4625 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4626 {
4627         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4628         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4629         struct i40e_pf *pf = vsi->back;
4630         struct i40e_hw *hw = &pf->hw;
4631         i40e_status ret;
4632         u32 tc_bw_max;
4633         int i;
4634
4635         /* Get the VSI level BW configuration */
4636         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4637         if (ret) {
4638                 dev_info(&pf->pdev->dev,
4639                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4640                          i40e_stat_str(&pf->hw, ret),
4641                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4642                 return -EINVAL;
4643         }
4644
4645         /* Get the VSI level BW configuration per TC */
4646         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4647                                                NULL);
4648         if (ret) {
4649                 dev_info(&pf->pdev->dev,
4650                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4651                          i40e_stat_str(&pf->hw, ret),
4652                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4653                 return -EINVAL;
4654         }
4655
4656         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4657                 dev_info(&pf->pdev->dev,
4658                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4659                          bw_config.tc_valid_bits,
4660                          bw_ets_config.tc_valid_bits);
4661                 /* Still continuing */
4662         }
4663
4664         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4665         vsi->bw_max_quanta = bw_config.max_bw;
4666         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4667                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4668         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4669                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4670                 vsi->bw_ets_limit_credits[i] =
4671                                         le16_to_cpu(bw_ets_config.credits[i]);
4672                 /* 3 bits out of 4 for each TC */
4673                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4674         }
4675
4676         return 0;
4677 }
4678
4679 /**
4680  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4681  * @vsi: the VSI being configured
4682  * @enabled_tc: TC bitmap
4683  * @bw_credits: BW shared credits per TC
4684  *
4685  * Returns 0 on success, negative value on failure
4686  **/
4687 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4688                                        u8 *bw_share)
4689 {
4690         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4691         i40e_status ret;
4692         int i;
4693
4694         bw_data.tc_valid_bits = enabled_tc;
4695         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4696                 bw_data.tc_bw_credits[i] = bw_share[i];
4697
4698         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4699                                        NULL);
4700         if (ret) {
4701                 dev_info(&vsi->back->pdev->dev,
4702                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4703                          vsi->back->hw.aq.asq_last_status);
4704                 return -EINVAL;
4705         }
4706
4707         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4708                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4709
4710         return 0;
4711 }
4712
4713 /**
4714  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4715  * @vsi: the VSI being configured
4716  * @enabled_tc: TC map to be enabled
4717  *
4718  **/
4719 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4720 {
4721         struct net_device *netdev = vsi->netdev;
4722         struct i40e_pf *pf = vsi->back;
4723         struct i40e_hw *hw = &pf->hw;
4724         u8 netdev_tc = 0;
4725         int i;
4726         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4727
4728         if (!netdev)
4729                 return;
4730
4731         if (!enabled_tc) {
4732                 netdev_reset_tc(netdev);
4733                 return;
4734         }
4735
4736         /* Set up actual enabled TCs on the VSI */
4737         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4738                 return;
4739
4740         /* set per TC queues for the VSI */
4741         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4742                 /* Only set TC queues for enabled tcs
4743                  *
4744                  * e.g. For a VSI that has TC0 and TC3 enabled the
4745                  * enabled_tc bitmap would be 0x00001001; the driver
4746                  * will set the numtc for netdev as 2 that will be
4747                  * referenced by the netdev layer as TC 0 and 1.
4748                  */
4749                 if (vsi->tc_config.enabled_tc & BIT(i))
4750                         netdev_set_tc_queue(netdev,
4751                                         vsi->tc_config.tc_info[i].netdev_tc,
4752                                         vsi->tc_config.tc_info[i].qcount,
4753                                         vsi->tc_config.tc_info[i].qoffset);
4754         }
4755
4756         /* Assign UP2TC map for the VSI */
4757         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4758                 /* Get the actual TC# for the UP */
4759                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4760                 /* Get the mapped netdev TC# for the UP */
4761                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4762                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4763         }
4764 }
4765
4766 /**
4767  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4768  * @vsi: the VSI being configured
4769  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4770  **/
4771 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4772                                       struct i40e_vsi_context *ctxt)
4773 {
4774         /* copy just the sections touched not the entire info
4775          * since not all sections are valid as returned by
4776          * update vsi params
4777          */
4778         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4779         memcpy(&vsi->info.queue_mapping,
4780                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4781         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4782                sizeof(vsi->info.tc_mapping));
4783 }
4784
4785 /**
4786  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4787  * @vsi: VSI to be configured
4788  * @enabled_tc: TC bitmap
4789  *
4790  * This configures a particular VSI for TCs that are mapped to the
4791  * given TC bitmap. It uses default bandwidth share for TCs across
4792  * VSIs to configure TC for a particular VSI.
4793  *
4794  * NOTE:
4795  * It is expected that the VSI queues have been quisced before calling
4796  * this function.
4797  **/
4798 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4799 {
4800         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4801         struct i40e_vsi_context ctxt;
4802         int ret = 0;
4803         int i;
4804
4805         /* Check if enabled_tc is same as existing or new TCs */
4806         if (vsi->tc_config.enabled_tc == enabled_tc)
4807                 return ret;
4808
4809         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4810         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4811                 if (enabled_tc & BIT(i))
4812                         bw_share[i] = 1;
4813         }
4814
4815         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4816         if (ret) {
4817                 dev_info(&vsi->back->pdev->dev,
4818                          "Failed configuring TC map %d for VSI %d\n",
4819                          enabled_tc, vsi->seid);
4820                 goto out;
4821         }
4822
4823         /* Update Queue Pairs Mapping for currently enabled UPs */
4824         ctxt.seid = vsi->seid;
4825         ctxt.pf_num = vsi->back->hw.pf_id;
4826         ctxt.vf_num = 0;
4827         ctxt.uplink_seid = vsi->uplink_seid;
4828         ctxt.info = vsi->info;
4829         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4830
4831         /* Update the VSI after updating the VSI queue-mapping information */
4832         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4833         if (ret) {
4834                 dev_info(&vsi->back->pdev->dev,
4835                          "Update vsi tc config failed, err %s aq_err %s\n",
4836                          i40e_stat_str(&vsi->back->hw, ret),
4837                          i40e_aq_str(&vsi->back->hw,
4838                                      vsi->back->hw.aq.asq_last_status));
4839                 goto out;
4840         }
4841         /* update the local VSI info with updated queue map */
4842         i40e_vsi_update_queue_map(vsi, &ctxt);
4843         vsi->info.valid_sections = 0;
4844
4845         /* Update current VSI BW information */
4846         ret = i40e_vsi_get_bw_info(vsi);
4847         if (ret) {
4848                 dev_info(&vsi->back->pdev->dev,
4849                          "Failed updating vsi bw info, err %s aq_err %s\n",
4850                          i40e_stat_str(&vsi->back->hw, ret),
4851                          i40e_aq_str(&vsi->back->hw,
4852                                      vsi->back->hw.aq.asq_last_status));
4853                 goto out;
4854         }
4855
4856         /* Update the netdev TC setup */
4857         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4858 out:
4859         return ret;
4860 }
4861
4862 /**
4863  * i40e_veb_config_tc - Configure TCs for given VEB
4864  * @veb: given VEB
4865  * @enabled_tc: TC bitmap
4866  *
4867  * Configures given TC bitmap for VEB (switching) element
4868  **/
4869 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4870 {
4871         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4872         struct i40e_pf *pf = veb->pf;
4873         int ret = 0;
4874         int i;
4875
4876         /* No TCs or already enabled TCs just return */
4877         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4878                 return ret;
4879
4880         bw_data.tc_valid_bits = enabled_tc;
4881         /* bw_data.absolute_credits is not set (relative) */
4882
4883         /* Enable ETS TCs with equal BW Share for now */
4884         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4885                 if (enabled_tc & BIT(i))
4886                         bw_data.tc_bw_share_credits[i] = 1;
4887         }
4888
4889         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4890                                                    &bw_data, NULL);
4891         if (ret) {
4892                 dev_info(&pf->pdev->dev,
4893                          "VEB bw config failed, err %s aq_err %s\n",
4894                          i40e_stat_str(&pf->hw, ret),
4895                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4896                 goto out;
4897         }
4898
4899         /* Update the BW information */
4900         ret = i40e_veb_get_bw_info(veb);
4901         if (ret) {
4902                 dev_info(&pf->pdev->dev,
4903                          "Failed getting veb bw config, err %s aq_err %s\n",
4904                          i40e_stat_str(&pf->hw, ret),
4905                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4906         }
4907
4908 out:
4909         return ret;
4910 }
4911
4912 #ifdef CONFIG_I40E_DCB
4913 /**
4914  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4915  * @pf: PF struct
4916  *
4917  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4918  * the caller would've quiesce all the VSIs before calling
4919  * this function
4920  **/
4921 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4922 {
4923         u8 tc_map = 0;
4924         int ret;
4925         u8 v;
4926
4927         /* Enable the TCs available on PF to all VEBs */
4928         tc_map = i40e_pf_get_tc_map(pf);
4929         for (v = 0; v < I40E_MAX_VEB; v++) {
4930                 if (!pf->veb[v])
4931                         continue;
4932                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4933                 if (ret) {
4934                         dev_info(&pf->pdev->dev,
4935                                  "Failed configuring TC for VEB seid=%d\n",
4936                                  pf->veb[v]->seid);
4937                         /* Will try to configure as many components */
4938                 }
4939         }
4940
4941         /* Update each VSI */
4942         for (v = 0; v < pf->num_alloc_vsi; v++) {
4943                 if (!pf->vsi[v])
4944                         continue;
4945
4946                 /* - Enable all TCs for the LAN VSI
4947 #ifdef I40E_FCOE
4948                  * - For FCoE VSI only enable the TC configured
4949                  *   as per the APP TLV
4950 #endif
4951                  * - For all others keep them at TC0 for now
4952                  */
4953                 if (v == pf->lan_vsi)
4954                         tc_map = i40e_pf_get_tc_map(pf);
4955                 else
4956                         tc_map = i40e_pf_get_default_tc(pf);
4957 #ifdef I40E_FCOE
4958                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4959                         tc_map = i40e_get_fcoe_tc_map(pf);
4960 #endif /* #ifdef I40E_FCOE */
4961
4962                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4963                 if (ret) {
4964                         dev_info(&pf->pdev->dev,
4965                                  "Failed configuring TC for VSI seid=%d\n",
4966                                  pf->vsi[v]->seid);
4967                         /* Will try to configure as many components */
4968                 } else {
4969                         /* Re-configure VSI vectors based on updated TC map */
4970                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4971                         if (pf->vsi[v]->netdev)
4972                                 i40e_dcbnl_set_all(pf->vsi[v]);
4973                 }
4974         }
4975 }
4976
4977 /**
4978  * i40e_resume_port_tx - Resume port Tx
4979  * @pf: PF struct
4980  *
4981  * Resume a port's Tx and issue a PF reset in case of failure to
4982  * resume.
4983  **/
4984 static int i40e_resume_port_tx(struct i40e_pf *pf)
4985 {
4986         struct i40e_hw *hw = &pf->hw;
4987         int ret;
4988
4989         ret = i40e_aq_resume_port_tx(hw, NULL);
4990         if (ret) {
4991                 dev_info(&pf->pdev->dev,
4992                          "Resume Port Tx failed, err %s aq_err %s\n",
4993                           i40e_stat_str(&pf->hw, ret),
4994                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4995                 /* Schedule PF reset to recover */
4996                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4997                 i40e_service_event_schedule(pf);
4998         }
4999
5000         return ret;
5001 }
5002
5003 /**
5004  * i40e_init_pf_dcb - Initialize DCB configuration
5005  * @pf: PF being configured
5006  *
5007  * Query the current DCB configuration and cache it
5008  * in the hardware structure
5009  **/
5010 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5011 {
5012         struct i40e_hw *hw = &pf->hw;
5013         int err = 0;
5014
5015         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5016         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5017             (pf->hw.aq.fw_maj_ver < 4))
5018                 goto out;
5019
5020         /* Get the initial DCB configuration */
5021         err = i40e_init_dcb(hw);
5022         if (!err) {
5023                 /* Device/Function is not DCBX capable */
5024                 if ((!hw->func_caps.dcb) ||
5025                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5026                         dev_info(&pf->pdev->dev,
5027                                  "DCBX offload is not supported or is disabled for this PF.\n");
5028
5029                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5030                                 goto out;
5031
5032                 } else {
5033                         /* When status is not DISABLED then DCBX in FW */
5034                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5035                                        DCB_CAP_DCBX_VER_IEEE;
5036
5037                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5038                         /* Enable DCB tagging only when more than one TC */
5039                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5040                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5041                         dev_dbg(&pf->pdev->dev,
5042                                 "DCBX offload is supported for this PF.\n");
5043                 }
5044         } else {
5045                 dev_info(&pf->pdev->dev,
5046                          "Query for DCB configuration failed, err %s aq_err %s\n",
5047                          i40e_stat_str(&pf->hw, err),
5048                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5049         }
5050
5051 out:
5052         return err;
5053 }
5054 #endif /* CONFIG_I40E_DCB */
5055 #define SPEED_SIZE 14
5056 #define FC_SIZE 8
5057 /**
5058  * i40e_print_link_message - print link up or down
5059  * @vsi: the VSI for which link needs a message
5060  */
5061 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5062 {
5063         char *speed = "Unknown";
5064         char *fc = "Unknown";
5065
5066         if (vsi->current_isup == isup)
5067                 return;
5068         vsi->current_isup = isup;
5069         if (!isup) {
5070                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5071                 return;
5072         }
5073
5074         /* Warn user if link speed on NPAR enabled partition is not at
5075          * least 10GB
5076          */
5077         if (vsi->back->hw.func_caps.npar_enable &&
5078             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5079              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5080                 netdev_warn(vsi->netdev,
5081                             "The partition detected link speed that is less than 10Gbps\n");
5082
5083         switch (vsi->back->hw.phy.link_info.link_speed) {
5084         case I40E_LINK_SPEED_40GB:
5085                 speed = "40 G";
5086                 break;
5087         case I40E_LINK_SPEED_20GB:
5088                 speed = "20 G";
5089                 break;
5090         case I40E_LINK_SPEED_10GB:
5091                 speed = "10 G";
5092                 break;
5093         case I40E_LINK_SPEED_1GB:
5094                 speed = "1000 M";
5095                 break;
5096         case I40E_LINK_SPEED_100MB:
5097                 speed = "100 M";
5098                 break;
5099         default:
5100                 break;
5101         }
5102
5103         switch (vsi->back->hw.fc.current_mode) {
5104         case I40E_FC_FULL:
5105                 fc = "RX/TX";
5106                 break;
5107         case I40E_FC_TX_PAUSE:
5108                 fc = "TX";
5109                 break;
5110         case I40E_FC_RX_PAUSE:
5111                 fc = "RX";
5112                 break;
5113         default:
5114                 fc = "None";
5115                 break;
5116         }
5117
5118         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5119                     speed, fc);
5120 }
5121
5122 /**
5123  * i40e_up_complete - Finish the last steps of bringing up a connection
5124  * @vsi: the VSI being configured
5125  **/
5126 static int i40e_up_complete(struct i40e_vsi *vsi)
5127 {
5128         struct i40e_pf *pf = vsi->back;
5129         int err;
5130
5131         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5132                 i40e_vsi_configure_msix(vsi);
5133         else
5134                 i40e_configure_msi_and_legacy(vsi);
5135
5136         /* start rings */
5137         err = i40e_vsi_control_rings(vsi, true);
5138         if (err)
5139                 return err;
5140
5141         clear_bit(__I40E_DOWN, &vsi->state);
5142         i40e_napi_enable_all(vsi);
5143         i40e_vsi_enable_irq(vsi);
5144
5145         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5146             (vsi->netdev)) {
5147                 i40e_print_link_message(vsi, true);
5148                 netif_tx_start_all_queues(vsi->netdev);
5149                 netif_carrier_on(vsi->netdev);
5150         } else if (vsi->netdev) {
5151                 i40e_print_link_message(vsi, false);
5152                 /* need to check for qualified module here*/
5153                 if ((pf->hw.phy.link_info.link_info &
5154                         I40E_AQ_MEDIA_AVAILABLE) &&
5155                     (!(pf->hw.phy.link_info.an_info &
5156                         I40E_AQ_QUALIFIED_MODULE)))
5157                         netdev_err(vsi->netdev,
5158                                    "the driver failed to link because an unqualified module was detected.");
5159         }
5160
5161         /* replay FDIR SB filters */
5162         if (vsi->type == I40E_VSI_FDIR) {
5163                 /* reset fd counters */
5164                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5165                 if (pf->fd_tcp_rule > 0) {
5166                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5167                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5168                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5169                         pf->fd_tcp_rule = 0;
5170                 }
5171                 i40e_fdir_filter_restore(vsi);
5172         }
5173         i40e_service_event_schedule(pf);
5174
5175         return 0;
5176 }
5177
5178 /**
5179  * i40e_vsi_reinit_locked - Reset the VSI
5180  * @vsi: the VSI being configured
5181  *
5182  * Rebuild the ring structs after some configuration
5183  * has changed, e.g. MTU size.
5184  **/
5185 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5186 {
5187         struct i40e_pf *pf = vsi->back;
5188
5189         WARN_ON(in_interrupt());
5190         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5191                 usleep_range(1000, 2000);
5192         i40e_down(vsi);
5193
5194         /* Give a VF some time to respond to the reset.  The
5195          * two second wait is based upon the watchdog cycle in
5196          * the VF driver.
5197          */
5198         if (vsi->type == I40E_VSI_SRIOV)
5199                 msleep(2000);
5200         i40e_up(vsi);
5201         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5202 }
5203
5204 /**
5205  * i40e_up - Bring the connection back up after being down
5206  * @vsi: the VSI being configured
5207  **/
5208 int i40e_up(struct i40e_vsi *vsi)
5209 {
5210         int err;
5211
5212         err = i40e_vsi_configure(vsi);
5213         if (!err)
5214                 err = i40e_up_complete(vsi);
5215
5216         return err;
5217 }
5218
5219 /**
5220  * i40e_down - Shutdown the connection processing
5221  * @vsi: the VSI being stopped
5222  **/
5223 void i40e_down(struct i40e_vsi *vsi)
5224 {
5225         int i;
5226
5227         /* It is assumed that the caller of this function
5228          * sets the vsi->state __I40E_DOWN bit.
5229          */
5230         if (vsi->netdev) {
5231                 netif_carrier_off(vsi->netdev);
5232                 netif_tx_disable(vsi->netdev);
5233         }
5234         i40e_vsi_disable_irq(vsi);
5235         i40e_vsi_control_rings(vsi, false);
5236         i40e_napi_disable_all(vsi);
5237
5238         for (i = 0; i < vsi->num_queue_pairs; i++) {
5239                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5240                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5241         }
5242 }
5243
5244 /**
5245  * i40e_setup_tc - configure multiple traffic classes
5246  * @netdev: net device to configure
5247  * @tc: number of traffic classes to enable
5248  **/
5249 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5250 {
5251         struct i40e_netdev_priv *np = netdev_priv(netdev);
5252         struct i40e_vsi *vsi = np->vsi;
5253         struct i40e_pf *pf = vsi->back;
5254         u8 enabled_tc = 0;
5255         int ret = -EINVAL;
5256         int i;
5257
5258         /* Check if DCB enabled to continue */
5259         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5260                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5261                 goto exit;
5262         }
5263
5264         /* Check if MFP enabled */
5265         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5266                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5267                 goto exit;
5268         }
5269
5270         /* Check whether tc count is within enabled limit */
5271         if (tc > i40e_pf_get_num_tc(pf)) {
5272                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5273                 goto exit;
5274         }
5275
5276         /* Generate TC map for number of tc requested */
5277         for (i = 0; i < tc; i++)
5278                 enabled_tc |= BIT(i);
5279
5280         /* Requesting same TC configuration as already enabled */
5281         if (enabled_tc == vsi->tc_config.enabled_tc)
5282                 return 0;
5283
5284         /* Quiesce VSI queues */
5285         i40e_quiesce_vsi(vsi);
5286
5287         /* Configure VSI for enabled TCs */
5288         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5289         if (ret) {
5290                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5291                             vsi->seid);
5292                 goto exit;
5293         }
5294
5295         /* Unquiesce VSI */
5296         i40e_unquiesce_vsi(vsi);
5297
5298 exit:
5299         return ret;
5300 }
5301
5302 #ifdef I40E_FCOE
5303 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5304                     struct tc_to_netdev *tc)
5305 #else
5306 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5307                            struct tc_to_netdev *tc)
5308 #endif
5309 {
5310         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5311                 return -EINVAL;
5312         return i40e_setup_tc(netdev, tc->tc);
5313 }
5314
5315 /**
5316  * i40e_open - Called when a network interface is made active
5317  * @netdev: network interface device structure
5318  *
5319  * The open entry point is called when a network interface is made
5320  * active by the system (IFF_UP).  At this point all resources needed
5321  * for transmit and receive operations are allocated, the interrupt
5322  * handler is registered with the OS, the netdev watchdog subtask is
5323  * enabled, and the stack is notified that the interface is ready.
5324  *
5325  * Returns 0 on success, negative value on failure
5326  **/
5327 int i40e_open(struct net_device *netdev)
5328 {
5329         struct i40e_netdev_priv *np = netdev_priv(netdev);
5330         struct i40e_vsi *vsi = np->vsi;
5331         struct i40e_pf *pf = vsi->back;
5332         int err;
5333
5334         /* disallow open during test or if eeprom is broken */
5335         if (test_bit(__I40E_TESTING, &pf->state) ||
5336             test_bit(__I40E_BAD_EEPROM, &pf->state))
5337                 return -EBUSY;
5338
5339         netif_carrier_off(netdev);
5340
5341         err = i40e_vsi_open(vsi);
5342         if (err)
5343                 return err;
5344
5345         /* configure global TSO hardware offload settings */
5346         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5347                                                        TCP_FLAG_FIN) >> 16);
5348         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5349                                                        TCP_FLAG_FIN |
5350                                                        TCP_FLAG_CWR) >> 16);
5351         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5352
5353 #ifdef CONFIG_I40E_VXLAN
5354         vxlan_get_rx_port(netdev);
5355 #endif
5356 #ifdef CONFIG_I40E_GENEVE
5357         if (pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE)
5358                 geneve_get_rx_port(netdev);
5359 #endif
5360
5361         return 0;
5362 }
5363
5364 /**
5365  * i40e_vsi_open -
5366  * @vsi: the VSI to open
5367  *
5368  * Finish initialization of the VSI.
5369  *
5370  * Returns 0 on success, negative value on failure
5371  **/
5372 int i40e_vsi_open(struct i40e_vsi *vsi)
5373 {
5374         struct i40e_pf *pf = vsi->back;
5375         char int_name[I40E_INT_NAME_STR_LEN];
5376         int err;
5377
5378         /* allocate descriptors */
5379         err = i40e_vsi_setup_tx_resources(vsi);
5380         if (err)
5381                 goto err_setup_tx;
5382         err = i40e_vsi_setup_rx_resources(vsi);
5383         if (err)
5384                 goto err_setup_rx;
5385
5386         err = i40e_vsi_configure(vsi);
5387         if (err)
5388                 goto err_setup_rx;
5389
5390         if (vsi->netdev) {
5391                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5392                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5393                 err = i40e_vsi_request_irq(vsi, int_name);
5394                 if (err)
5395                         goto err_setup_rx;
5396
5397                 /* Notify the stack of the actual queue counts. */
5398                 err = netif_set_real_num_tx_queues(vsi->netdev,
5399                                                    vsi->num_queue_pairs);
5400                 if (err)
5401                         goto err_set_queues;
5402
5403                 err = netif_set_real_num_rx_queues(vsi->netdev,
5404                                                    vsi->num_queue_pairs);
5405                 if (err)
5406                         goto err_set_queues;
5407
5408         } else if (vsi->type == I40E_VSI_FDIR) {
5409                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5410                          dev_driver_string(&pf->pdev->dev),
5411                          dev_name(&pf->pdev->dev));
5412                 err = i40e_vsi_request_irq(vsi, int_name);
5413
5414         } else {
5415                 err = -EINVAL;
5416                 goto err_setup_rx;
5417         }
5418
5419         err = i40e_up_complete(vsi);
5420         if (err)
5421                 goto err_up_complete;
5422
5423         return 0;
5424
5425 err_up_complete:
5426         i40e_down(vsi);
5427 err_set_queues:
5428         i40e_vsi_free_irq(vsi);
5429 err_setup_rx:
5430         i40e_vsi_free_rx_resources(vsi);
5431 err_setup_tx:
5432         i40e_vsi_free_tx_resources(vsi);
5433         if (vsi == pf->vsi[pf->lan_vsi])
5434                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5435
5436         return err;
5437 }
5438
5439 /**
5440  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5441  * @pf: Pointer to PF
5442  *
5443  * This function destroys the hlist where all the Flow Director
5444  * filters were saved.
5445  **/
5446 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5447 {
5448         struct i40e_fdir_filter *filter;
5449         struct hlist_node *node2;
5450
5451         hlist_for_each_entry_safe(filter, node2,
5452                                   &pf->fdir_filter_list, fdir_node) {
5453                 hlist_del(&filter->fdir_node);
5454                 kfree(filter);
5455         }
5456         pf->fdir_pf_active_filters = 0;
5457 }
5458
5459 /**
5460  * i40e_close - Disables a network interface
5461  * @netdev: network interface device structure
5462  *
5463  * The close entry point is called when an interface is de-activated
5464  * by the OS.  The hardware is still under the driver's control, but
5465  * this netdev interface is disabled.
5466  *
5467  * Returns 0, this is not allowed to fail
5468  **/
5469 #ifdef I40E_FCOE
5470 int i40e_close(struct net_device *netdev)
5471 #else
5472 static int i40e_close(struct net_device *netdev)
5473 #endif
5474 {
5475         struct i40e_netdev_priv *np = netdev_priv(netdev);
5476         struct i40e_vsi *vsi = np->vsi;
5477
5478         i40e_vsi_close(vsi);
5479
5480         return 0;
5481 }
5482
5483 /**
5484  * i40e_do_reset - Start a PF or Core Reset sequence
5485  * @pf: board private structure
5486  * @reset_flags: which reset is requested
5487  *
5488  * The essential difference in resets is that the PF Reset
5489  * doesn't clear the packet buffers, doesn't reset the PE
5490  * firmware, and doesn't bother the other PFs on the chip.
5491  **/
5492 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5493 {
5494         u32 val;
5495
5496         WARN_ON(in_interrupt());
5497
5498         if (i40e_check_asq_alive(&pf->hw))
5499                 i40e_vc_notify_reset(pf);
5500
5501         /* do the biggest reset indicated */
5502         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5503
5504                 /* Request a Global Reset
5505                  *
5506                  * This will start the chip's countdown to the actual full
5507                  * chip reset event, and a warning interrupt to be sent
5508                  * to all PFs, including the requestor.  Our handler
5509                  * for the warning interrupt will deal with the shutdown
5510                  * and recovery of the switch setup.
5511                  */
5512                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5513                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5514                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5515                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5516
5517         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5518
5519                 /* Request a Core Reset
5520                  *
5521                  * Same as Global Reset, except does *not* include the MAC/PHY
5522                  */
5523                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5524                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5525                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5526                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5527                 i40e_flush(&pf->hw);
5528
5529         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5530
5531                 /* Request a PF Reset
5532                  *
5533                  * Resets only the PF-specific registers
5534                  *
5535                  * This goes directly to the tear-down and rebuild of
5536                  * the switch, since we need to do all the recovery as
5537                  * for the Core Reset.
5538                  */
5539                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5540                 i40e_handle_reset_warning(pf);
5541
5542         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5543                 int v;
5544
5545                 /* Find the VSI(s) that requested a re-init */
5546                 dev_info(&pf->pdev->dev,
5547                          "VSI reinit requested\n");
5548                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5549                         struct i40e_vsi *vsi = pf->vsi[v];
5550
5551                         if (vsi != NULL &&
5552                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5553                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5554                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5555                         }
5556                 }
5557         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5558                 int v;
5559
5560                 /* Find the VSI(s) that needs to be brought down */
5561                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5562                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5563                         struct i40e_vsi *vsi = pf->vsi[v];
5564
5565                         if (vsi != NULL &&
5566                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5567                                 set_bit(__I40E_DOWN, &vsi->state);
5568                                 i40e_down(vsi);
5569                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5570                         }
5571                 }
5572         } else {
5573                 dev_info(&pf->pdev->dev,
5574                          "bad reset request 0x%08x\n", reset_flags);
5575         }
5576 }
5577
5578 #ifdef CONFIG_I40E_DCB
5579 /**
5580  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5581  * @pf: board private structure
5582  * @old_cfg: current DCB config
5583  * @new_cfg: new DCB config
5584  **/
5585 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5586                             struct i40e_dcbx_config *old_cfg,
5587                             struct i40e_dcbx_config *new_cfg)
5588 {
5589         bool need_reconfig = false;
5590
5591         /* Check if ETS configuration has changed */
5592         if (memcmp(&new_cfg->etscfg,
5593                    &old_cfg->etscfg,
5594                    sizeof(new_cfg->etscfg))) {
5595                 /* If Priority Table has changed reconfig is needed */
5596                 if (memcmp(&new_cfg->etscfg.prioritytable,
5597                            &old_cfg->etscfg.prioritytable,
5598                            sizeof(new_cfg->etscfg.prioritytable))) {
5599                         need_reconfig = true;
5600                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5601                 }
5602
5603                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5604                            &old_cfg->etscfg.tcbwtable,
5605                            sizeof(new_cfg->etscfg.tcbwtable)))
5606                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5607
5608                 if (memcmp(&new_cfg->etscfg.tsatable,
5609                            &old_cfg->etscfg.tsatable,
5610                            sizeof(new_cfg->etscfg.tsatable)))
5611                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5612         }
5613
5614         /* Check if PFC configuration has changed */
5615         if (memcmp(&new_cfg->pfc,
5616                    &old_cfg->pfc,
5617                    sizeof(new_cfg->pfc))) {
5618                 need_reconfig = true;
5619                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5620         }
5621
5622         /* Check if APP Table has changed */
5623         if (memcmp(&new_cfg->app,
5624                    &old_cfg->app,
5625                    sizeof(new_cfg->app))) {
5626                 need_reconfig = true;
5627                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5628         }
5629
5630         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5631         return need_reconfig;
5632 }
5633
5634 /**
5635  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5636  * @pf: board private structure
5637  * @e: event info posted on ARQ
5638  **/
5639 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5640                                   struct i40e_arq_event_info *e)
5641 {
5642         struct i40e_aqc_lldp_get_mib *mib =
5643                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5644         struct i40e_hw *hw = &pf->hw;
5645         struct i40e_dcbx_config tmp_dcbx_cfg;
5646         bool need_reconfig = false;
5647         int ret = 0;
5648         u8 type;
5649
5650         /* Not DCB capable or capability disabled */
5651         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5652                 return ret;
5653
5654         /* Ignore if event is not for Nearest Bridge */
5655         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5656                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5657         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5658         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5659                 return ret;
5660
5661         /* Check MIB Type and return if event for Remote MIB update */
5662         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5663         dev_dbg(&pf->pdev->dev,
5664                 "LLDP event mib type %s\n", type ? "remote" : "local");
5665         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5666                 /* Update the remote cached instance and return */
5667                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5668                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5669                                 &hw->remote_dcbx_config);
5670                 goto exit;
5671         }
5672
5673         /* Store the old configuration */
5674         tmp_dcbx_cfg = hw->local_dcbx_config;
5675
5676         /* Reset the old DCBx configuration data */
5677         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5678         /* Get updated DCBX data from firmware */
5679         ret = i40e_get_dcb_config(&pf->hw);
5680         if (ret) {
5681                 dev_info(&pf->pdev->dev,
5682                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5683                          i40e_stat_str(&pf->hw, ret),
5684                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5685                 goto exit;
5686         }
5687
5688         /* No change detected in DCBX configs */
5689         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5690                     sizeof(tmp_dcbx_cfg))) {
5691                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5692                 goto exit;
5693         }
5694
5695         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5696                                                &hw->local_dcbx_config);
5697
5698         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5699
5700         if (!need_reconfig)
5701                 goto exit;
5702
5703         /* Enable DCB tagging only when more than one TC */
5704         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5705                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5706         else
5707                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5708
5709         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5710         /* Reconfiguration needed quiesce all VSIs */
5711         i40e_pf_quiesce_all_vsi(pf);
5712
5713         /* Changes in configuration update VEB/VSI */
5714         i40e_dcb_reconfigure(pf);
5715
5716         ret = i40e_resume_port_tx(pf);
5717
5718         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5719         /* In case of error no point in resuming VSIs */
5720         if (ret)
5721                 goto exit;
5722
5723         /* Wait for the PF's Tx queues to be disabled */
5724         ret = i40e_pf_wait_txq_disabled(pf);
5725         if (ret) {
5726                 /* Schedule PF reset to recover */
5727                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5728                 i40e_service_event_schedule(pf);
5729         } else {
5730                 i40e_pf_unquiesce_all_vsi(pf);
5731         }
5732
5733 exit:
5734         return ret;
5735 }
5736 #endif /* CONFIG_I40E_DCB */
5737
5738 /**
5739  * i40e_do_reset_safe - Protected reset path for userland calls.
5740  * @pf: board private structure
5741  * @reset_flags: which reset is requested
5742  *
5743  **/
5744 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5745 {
5746         rtnl_lock();
5747         i40e_do_reset(pf, reset_flags);
5748         rtnl_unlock();
5749 }
5750
5751 /**
5752  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5753  * @pf: board private structure
5754  * @e: event info posted on ARQ
5755  *
5756  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5757  * and VF queues
5758  **/
5759 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5760                                            struct i40e_arq_event_info *e)
5761 {
5762         struct i40e_aqc_lan_overflow *data =
5763                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5764         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5765         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5766         struct i40e_hw *hw = &pf->hw;
5767         struct i40e_vf *vf;
5768         u16 vf_id;
5769
5770         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5771                 queue, qtx_ctl);
5772
5773         /* Queue belongs to VF, find the VF and issue VF reset */
5774         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5775             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5776                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5777                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5778                 vf_id -= hw->func_caps.vf_base_id;
5779                 vf = &pf->vf[vf_id];
5780                 i40e_vc_notify_vf_reset(vf);
5781                 /* Allow VF to process pending reset notification */
5782                 msleep(20);
5783                 i40e_reset_vf(vf, false);
5784         }
5785 }
5786
5787 /**
5788  * i40e_service_event_complete - Finish up the service event
5789  * @pf: board private structure
5790  **/
5791 static void i40e_service_event_complete(struct i40e_pf *pf)
5792 {
5793         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5794
5795         /* flush memory to make sure state is correct before next watchog */
5796         smp_mb__before_atomic();
5797         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5798 }
5799
5800 /**
5801  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5802  * @pf: board private structure
5803  **/
5804 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5805 {
5806         u32 val, fcnt_prog;
5807
5808         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5809         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5810         return fcnt_prog;
5811 }
5812
5813 /**
5814  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5815  * @pf: board private structure
5816  **/
5817 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5818 {
5819         u32 val, fcnt_prog;
5820
5821         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5822         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5823                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5824                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5825         return fcnt_prog;
5826 }
5827
5828 /**
5829  * i40e_get_global_fd_count - Get total FD filters programmed on device
5830  * @pf: board private structure
5831  **/
5832 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5833 {
5834         u32 val, fcnt_prog;
5835
5836         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5837         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5838                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5839                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5840         return fcnt_prog;
5841 }
5842
5843 /**
5844  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5845  * @pf: board private structure
5846  **/
5847 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5848 {
5849         struct i40e_fdir_filter *filter;
5850         u32 fcnt_prog, fcnt_avail;
5851         struct hlist_node *node;
5852
5853         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5854                 return;
5855
5856         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5857          * to re-enable
5858          */
5859         fcnt_prog = i40e_get_global_fd_count(pf);
5860         fcnt_avail = pf->fdir_pf_filter_count;
5861         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5862             (pf->fd_add_err == 0) ||
5863             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5864                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5865                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5866                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5867                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5868                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5869                 }
5870         }
5871         /* Wait for some more space to be available to turn on ATR */
5872         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5873                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5874                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5875                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5876                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5877                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5878                 }
5879         }
5880
5881         /* if hw had a problem adding a filter, delete it */
5882         if (pf->fd_inv > 0) {
5883                 hlist_for_each_entry_safe(filter, node,
5884                                           &pf->fdir_filter_list, fdir_node) {
5885                         if (filter->fd_id == pf->fd_inv) {
5886                                 hlist_del(&filter->fdir_node);
5887                                 kfree(filter);
5888                                 pf->fdir_pf_active_filters--;
5889                         }
5890                 }
5891         }
5892 }
5893
5894 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5895 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5896 /**
5897  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5898  * @pf: board private structure
5899  **/
5900 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5901 {
5902         unsigned long min_flush_time;
5903         int flush_wait_retry = 50;
5904         bool disable_atr = false;
5905         int fd_room;
5906         int reg;
5907
5908         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5909                 return;
5910
5911         if (!time_after(jiffies, pf->fd_flush_timestamp +
5912                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5913                 return;
5914
5915         /* If the flush is happening too quick and we have mostly SB rules we
5916          * should not re-enable ATR for some time.
5917          */
5918         min_flush_time = pf->fd_flush_timestamp +
5919                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5920         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5921
5922         if (!(time_after(jiffies, min_flush_time)) &&
5923             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5924                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5925                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5926                 disable_atr = true;
5927         }
5928
5929         pf->fd_flush_timestamp = jiffies;
5930         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5931         /* flush all filters */
5932         wr32(&pf->hw, I40E_PFQF_CTL_1,
5933              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5934         i40e_flush(&pf->hw);
5935         pf->fd_flush_cnt++;
5936         pf->fd_add_err = 0;
5937         do {
5938                 /* Check FD flush status every 5-6msec */
5939                 usleep_range(5000, 6000);
5940                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5941                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5942                         break;
5943         } while (flush_wait_retry--);
5944         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5945                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5946         } else {
5947                 /* replay sideband filters */
5948                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5949                 if (!disable_atr)
5950                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5951                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5952                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5953                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5954         }
5955
5956 }
5957
5958 /**
5959  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5960  * @pf: board private structure
5961  **/
5962 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5963 {
5964         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5965 }
5966
5967 /* We can see up to 256 filter programming desc in transit if the filters are
5968  * being applied really fast; before we see the first
5969  * filter miss error on Rx queue 0. Accumulating enough error messages before
5970  * reacting will make sure we don't cause flush too often.
5971  */
5972 #define I40E_MAX_FD_PROGRAM_ERROR 256
5973
5974 /**
5975  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5976  * @pf: board private structure
5977  **/
5978 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5979 {
5980
5981         /* if interface is down do nothing */
5982         if (test_bit(__I40E_DOWN, &pf->state))
5983                 return;
5984
5985         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5986                 return;
5987
5988         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5989                 i40e_fdir_flush_and_replay(pf);
5990
5991         i40e_fdir_check_and_reenable(pf);
5992
5993 }
5994
5995 /**
5996  * i40e_vsi_link_event - notify VSI of a link event
5997  * @vsi: vsi to be notified
5998  * @link_up: link up or down
5999  **/
6000 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6001 {
6002         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6003                 return;
6004
6005         switch (vsi->type) {
6006         case I40E_VSI_MAIN:
6007 #ifdef I40E_FCOE
6008         case I40E_VSI_FCOE:
6009 #endif
6010                 if (!vsi->netdev || !vsi->netdev_registered)
6011                         break;
6012
6013                 if (link_up) {
6014                         netif_carrier_on(vsi->netdev);
6015                         netif_tx_wake_all_queues(vsi->netdev);
6016                 } else {
6017                         netif_carrier_off(vsi->netdev);
6018                         netif_tx_stop_all_queues(vsi->netdev);
6019                 }
6020                 break;
6021
6022         case I40E_VSI_SRIOV:
6023         case I40E_VSI_VMDQ2:
6024         case I40E_VSI_CTRL:
6025         case I40E_VSI_MIRROR:
6026         default:
6027                 /* there is no notification for other VSIs */
6028                 break;
6029         }
6030 }
6031
6032 /**
6033  * i40e_veb_link_event - notify elements on the veb of a link event
6034  * @veb: veb to be notified
6035  * @link_up: link up or down
6036  **/
6037 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6038 {
6039         struct i40e_pf *pf;
6040         int i;
6041
6042         if (!veb || !veb->pf)
6043                 return;
6044         pf = veb->pf;
6045
6046         /* depth first... */
6047         for (i = 0; i < I40E_MAX_VEB; i++)
6048                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6049                         i40e_veb_link_event(pf->veb[i], link_up);
6050
6051         /* ... now the local VSIs */
6052         for (i = 0; i < pf->num_alloc_vsi; i++)
6053                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6054                         i40e_vsi_link_event(pf->vsi[i], link_up);
6055 }
6056
6057 /**
6058  * i40e_link_event - Update netif_carrier status
6059  * @pf: board private structure
6060  **/
6061 static void i40e_link_event(struct i40e_pf *pf)
6062 {
6063         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6064         u8 new_link_speed, old_link_speed;
6065         i40e_status status;
6066         bool new_link, old_link;
6067
6068         /* save off old link status information */
6069         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6070
6071         /* set this to force the get_link_status call to refresh state */
6072         pf->hw.phy.get_link_info = true;
6073
6074         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6075
6076         status = i40e_get_link_status(&pf->hw, &new_link);
6077         if (status) {
6078                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6079                         status);
6080                 return;
6081         }
6082
6083         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6084         new_link_speed = pf->hw.phy.link_info.link_speed;
6085
6086         if (new_link == old_link &&
6087             new_link_speed == old_link_speed &&
6088             (test_bit(__I40E_DOWN, &vsi->state) ||
6089              new_link == netif_carrier_ok(vsi->netdev)))
6090                 return;
6091
6092         if (!test_bit(__I40E_DOWN, &vsi->state))
6093                 i40e_print_link_message(vsi, new_link);
6094
6095         /* Notify the base of the switch tree connected to
6096          * the link.  Floating VEBs are not notified.
6097          */
6098         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6099                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6100         else
6101                 i40e_vsi_link_event(vsi, new_link);
6102
6103         if (pf->vf)
6104                 i40e_vc_notify_link_state(pf);
6105
6106         if (pf->flags & I40E_FLAG_PTP)
6107                 i40e_ptp_set_increment(pf);
6108 }
6109
6110 /**
6111  * i40e_watchdog_subtask - periodic checks not using event driven response
6112  * @pf: board private structure
6113  **/
6114 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6115 {
6116         int i;
6117
6118         /* if interface is down do nothing */
6119         if (test_bit(__I40E_DOWN, &pf->state) ||
6120             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6121                 return;
6122
6123         /* make sure we don't do these things too often */
6124         if (time_before(jiffies, (pf->service_timer_previous +
6125                                   pf->service_timer_period)))
6126                 return;
6127         pf->service_timer_previous = jiffies;
6128
6129         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6130                 i40e_link_event(pf);
6131
6132         /* Update the stats for active netdevs so the network stack
6133          * can look at updated numbers whenever it cares to
6134          */
6135         for (i = 0; i < pf->num_alloc_vsi; i++)
6136                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6137                         i40e_update_stats(pf->vsi[i]);
6138
6139         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6140                 /* Update the stats for the active switching components */
6141                 for (i = 0; i < I40E_MAX_VEB; i++)
6142                         if (pf->veb[i])
6143                                 i40e_update_veb_stats(pf->veb[i]);
6144         }
6145
6146         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6147 }
6148
6149 /**
6150  * i40e_reset_subtask - Set up for resetting the device and driver
6151  * @pf: board private structure
6152  **/
6153 static void i40e_reset_subtask(struct i40e_pf *pf)
6154 {
6155         u32 reset_flags = 0;
6156
6157         rtnl_lock();
6158         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6159                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6160                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6161         }
6162         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6163                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6164                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6165         }
6166         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6167                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6168                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6169         }
6170         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6171                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6172                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6173         }
6174         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6175                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6176                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6177         }
6178
6179         /* If there's a recovery already waiting, it takes
6180          * precedence before starting a new reset sequence.
6181          */
6182         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6183                 i40e_handle_reset_warning(pf);
6184                 goto unlock;
6185         }
6186
6187         /* If we're already down or resetting, just bail */
6188         if (reset_flags &&
6189             !test_bit(__I40E_DOWN, &pf->state) &&
6190             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6191                 i40e_do_reset(pf, reset_flags);
6192
6193 unlock:
6194         rtnl_unlock();
6195 }
6196
6197 /**
6198  * i40e_handle_link_event - Handle link event
6199  * @pf: board private structure
6200  * @e: event info posted on ARQ
6201  **/
6202 static void i40e_handle_link_event(struct i40e_pf *pf,
6203                                    struct i40e_arq_event_info *e)
6204 {
6205         struct i40e_aqc_get_link_status *status =
6206                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6207
6208         /* Do a new status request to re-enable LSE reporting
6209          * and load new status information into the hw struct
6210          * This completely ignores any state information
6211          * in the ARQ event info, instead choosing to always
6212          * issue the AQ update link status command.
6213          */
6214         i40e_link_event(pf);
6215
6216         /* check for unqualified module, if link is down */
6217         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6218             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6219             (!(status->link_info & I40E_AQ_LINK_UP)))
6220                 dev_err(&pf->pdev->dev,
6221                         "The driver failed to link because an unqualified module was detected.\n");
6222 }
6223
6224 /**
6225  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6226  * @pf: board private structure
6227  **/
6228 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6229 {
6230         struct i40e_arq_event_info event;
6231         struct i40e_hw *hw = &pf->hw;
6232         u16 pending, i = 0;
6233         i40e_status ret;
6234         u16 opcode;
6235         u32 oldval;
6236         u32 val;
6237
6238         /* Do not run clean AQ when PF reset fails */
6239         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6240                 return;
6241
6242         /* check for error indications */
6243         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6244         oldval = val;
6245         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6246                 if (hw->debug_mask & I40E_DEBUG_AQ)
6247                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6248                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6249         }
6250         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6251                 if (hw->debug_mask & I40E_DEBUG_AQ)
6252                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6253                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6254                 pf->arq_overflows++;
6255         }
6256         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6257                 if (hw->debug_mask & I40E_DEBUG_AQ)
6258                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6259                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6260         }
6261         if (oldval != val)
6262                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6263
6264         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6265         oldval = val;
6266         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6267                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6268                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6269                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6270         }
6271         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6272                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6273                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6274                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6275         }
6276         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6277                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6278                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6279                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6280         }
6281         if (oldval != val)
6282                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6283
6284         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6285         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6286         if (!event.msg_buf)
6287                 return;
6288
6289         do {
6290                 ret = i40e_clean_arq_element(hw, &event, &pending);
6291                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6292                         break;
6293                 else if (ret) {
6294                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6295                         break;
6296                 }
6297
6298                 opcode = le16_to_cpu(event.desc.opcode);
6299                 switch (opcode) {
6300
6301                 case i40e_aqc_opc_get_link_status:
6302                         i40e_handle_link_event(pf, &event);
6303                         break;
6304                 case i40e_aqc_opc_send_msg_to_pf:
6305                         ret = i40e_vc_process_vf_msg(pf,
6306                                         le16_to_cpu(event.desc.retval),
6307                                         le32_to_cpu(event.desc.cookie_high),
6308                                         le32_to_cpu(event.desc.cookie_low),
6309                                         event.msg_buf,
6310                                         event.msg_len);
6311                         break;
6312                 case i40e_aqc_opc_lldp_update_mib:
6313                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6314 #ifdef CONFIG_I40E_DCB
6315                         rtnl_lock();
6316                         ret = i40e_handle_lldp_event(pf, &event);
6317                         rtnl_unlock();
6318 #endif /* CONFIG_I40E_DCB */
6319                         break;
6320                 case i40e_aqc_opc_event_lan_overflow:
6321                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6322                         i40e_handle_lan_overflow_event(pf, &event);
6323                         break;
6324                 case i40e_aqc_opc_send_msg_to_peer:
6325                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6326                         break;
6327                 case i40e_aqc_opc_nvm_erase:
6328                 case i40e_aqc_opc_nvm_update:
6329                 case i40e_aqc_opc_oem_post_update:
6330                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6331                         break;
6332                 default:
6333                         dev_info(&pf->pdev->dev,
6334                                  "ARQ Error: Unknown event 0x%04x received\n",
6335                                  opcode);
6336                         break;
6337                 }
6338         } while (pending && (i++ < pf->adminq_work_limit));
6339
6340         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6341         /* re-enable Admin queue interrupt cause */
6342         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6343         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6344         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6345         i40e_flush(hw);
6346
6347         kfree(event.msg_buf);
6348 }
6349
6350 /**
6351  * i40e_verify_eeprom - make sure eeprom is good to use
6352  * @pf: board private structure
6353  **/
6354 static void i40e_verify_eeprom(struct i40e_pf *pf)
6355 {
6356         int err;
6357
6358         err = i40e_diag_eeprom_test(&pf->hw);
6359         if (err) {
6360                 /* retry in case of garbage read */
6361                 err = i40e_diag_eeprom_test(&pf->hw);
6362                 if (err) {
6363                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6364                                  err);
6365                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6366                 }
6367         }
6368
6369         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6370                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6371                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6372         }
6373 }
6374
6375 /**
6376  * i40e_enable_pf_switch_lb
6377  * @pf: pointer to the PF structure
6378  *
6379  * enable switch loop back or die - no point in a return value
6380  **/
6381 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6382 {
6383         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6384         struct i40e_vsi_context ctxt;
6385         int ret;
6386
6387         ctxt.seid = pf->main_vsi_seid;
6388         ctxt.pf_num = pf->hw.pf_id;
6389         ctxt.vf_num = 0;
6390         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6391         if (ret) {
6392                 dev_info(&pf->pdev->dev,
6393                          "couldn't get PF vsi config, err %s aq_err %s\n",
6394                          i40e_stat_str(&pf->hw, ret),
6395                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6396                 return;
6397         }
6398         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6399         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6400         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6401
6402         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6403         if (ret) {
6404                 dev_info(&pf->pdev->dev,
6405                          "update vsi switch failed, err %s aq_err %s\n",
6406                          i40e_stat_str(&pf->hw, ret),
6407                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6408         }
6409 }
6410
6411 /**
6412  * i40e_disable_pf_switch_lb
6413  * @pf: pointer to the PF structure
6414  *
6415  * disable switch loop back or die - no point in a return value
6416  **/
6417 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6418 {
6419         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6420         struct i40e_vsi_context ctxt;
6421         int ret;
6422
6423         ctxt.seid = pf->main_vsi_seid;
6424         ctxt.pf_num = pf->hw.pf_id;
6425         ctxt.vf_num = 0;
6426         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6427         if (ret) {
6428                 dev_info(&pf->pdev->dev,
6429                          "couldn't get PF vsi config, err %s aq_err %s\n",
6430                          i40e_stat_str(&pf->hw, ret),
6431                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6432                 return;
6433         }
6434         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6435         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6436         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6437
6438         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6439         if (ret) {
6440                 dev_info(&pf->pdev->dev,
6441                          "update vsi switch failed, err %s aq_err %s\n",
6442                          i40e_stat_str(&pf->hw, ret),
6443                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6444         }
6445 }
6446
6447 /**
6448  * i40e_config_bridge_mode - Configure the HW bridge mode
6449  * @veb: pointer to the bridge instance
6450  *
6451  * Configure the loop back mode for the LAN VSI that is downlink to the
6452  * specified HW bridge instance. It is expected this function is called
6453  * when a new HW bridge is instantiated.
6454  **/
6455 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6456 {
6457         struct i40e_pf *pf = veb->pf;
6458
6459         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6460                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6461                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6462         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6463                 i40e_disable_pf_switch_lb(pf);
6464         else
6465                 i40e_enable_pf_switch_lb(pf);
6466 }
6467
6468 /**
6469  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6470  * @veb: pointer to the VEB instance
6471  *
6472  * This is a recursive function that first builds the attached VSIs then
6473  * recurses in to build the next layer of VEB.  We track the connections
6474  * through our own index numbers because the seid's from the HW could
6475  * change across the reset.
6476  **/
6477 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6478 {
6479         struct i40e_vsi *ctl_vsi = NULL;
6480         struct i40e_pf *pf = veb->pf;
6481         int v, veb_idx;
6482         int ret;
6483
6484         /* build VSI that owns this VEB, temporarily attached to base VEB */
6485         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6486                 if (pf->vsi[v] &&
6487                     pf->vsi[v]->veb_idx == veb->idx &&
6488                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6489                         ctl_vsi = pf->vsi[v];
6490                         break;
6491                 }
6492         }
6493         if (!ctl_vsi) {
6494                 dev_info(&pf->pdev->dev,
6495                          "missing owner VSI for veb_idx %d\n", veb->idx);
6496                 ret = -ENOENT;
6497                 goto end_reconstitute;
6498         }
6499         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6500                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6501         ret = i40e_add_vsi(ctl_vsi);
6502         if (ret) {
6503                 dev_info(&pf->pdev->dev,
6504                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6505                          veb->idx, ret);
6506                 goto end_reconstitute;
6507         }
6508         i40e_vsi_reset_stats(ctl_vsi);
6509
6510         /* create the VEB in the switch and move the VSI onto the VEB */
6511         ret = i40e_add_veb(veb, ctl_vsi);
6512         if (ret)
6513                 goto end_reconstitute;
6514
6515         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6516                 veb->bridge_mode = BRIDGE_MODE_VEB;
6517         else
6518                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6519         i40e_config_bridge_mode(veb);
6520
6521         /* create the remaining VSIs attached to this VEB */
6522         for (v = 0; v < pf->num_alloc_vsi; v++) {
6523                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6524                         continue;
6525
6526                 if (pf->vsi[v]->veb_idx == veb->idx) {
6527                         struct i40e_vsi *vsi = pf->vsi[v];
6528
6529                         vsi->uplink_seid = veb->seid;
6530                         ret = i40e_add_vsi(vsi);
6531                         if (ret) {
6532                                 dev_info(&pf->pdev->dev,
6533                                          "rebuild of vsi_idx %d failed: %d\n",
6534                                          v, ret);
6535                                 goto end_reconstitute;
6536                         }
6537                         i40e_vsi_reset_stats(vsi);
6538                 }
6539         }
6540
6541         /* create any VEBs attached to this VEB - RECURSION */
6542         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6543                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6544                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6545                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6546                         if (ret)
6547                                 break;
6548                 }
6549         }
6550
6551 end_reconstitute:
6552         return ret;
6553 }
6554
6555 /**
6556  * i40e_get_capabilities - get info about the HW
6557  * @pf: the PF struct
6558  **/
6559 static int i40e_get_capabilities(struct i40e_pf *pf)
6560 {
6561         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6562         u16 data_size;
6563         int buf_len;
6564         int err;
6565
6566         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6567         do {
6568                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6569                 if (!cap_buf)
6570                         return -ENOMEM;
6571
6572                 /* this loads the data into the hw struct for us */
6573                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6574                                             &data_size,
6575                                             i40e_aqc_opc_list_func_capabilities,
6576                                             NULL);
6577                 /* data loaded, buffer no longer needed */
6578                 kfree(cap_buf);
6579
6580                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6581                         /* retry with a larger buffer */
6582                         buf_len = data_size;
6583                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6584                         dev_info(&pf->pdev->dev,
6585                                  "capability discovery failed, err %s aq_err %s\n",
6586                                  i40e_stat_str(&pf->hw, err),
6587                                  i40e_aq_str(&pf->hw,
6588                                              pf->hw.aq.asq_last_status));
6589                         return -ENODEV;
6590                 }
6591         } while (err);
6592
6593         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6594                 dev_info(&pf->pdev->dev,
6595                          "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",
6596                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6597                          pf->hw.func_caps.num_msix_vectors,
6598                          pf->hw.func_caps.num_msix_vectors_vf,
6599                          pf->hw.func_caps.fd_filters_guaranteed,
6600                          pf->hw.func_caps.fd_filters_best_effort,
6601                          pf->hw.func_caps.num_tx_qp,
6602                          pf->hw.func_caps.num_vsis);
6603
6604 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6605                        + pf->hw.func_caps.num_vfs)
6606         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6607                 dev_info(&pf->pdev->dev,
6608                          "got num_vsis %d, setting num_vsis to %d\n",
6609                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6610                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6611         }
6612
6613         return 0;
6614 }
6615
6616 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6617
6618 /**
6619  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6620  * @pf: board private structure
6621  **/
6622 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6623 {
6624         struct i40e_vsi *vsi;
6625         int i;
6626
6627         /* quick workaround for an NVM issue that leaves a critical register
6628          * uninitialized
6629          */
6630         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6631                 static const u32 hkey[] = {
6632                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6633                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6634                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6635                         0x95b3a76d};
6636
6637                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6638                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6639         }
6640
6641         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6642                 return;
6643
6644         /* find existing VSI and see if it needs configuring */
6645         vsi = NULL;
6646         for (i = 0; i < pf->num_alloc_vsi; i++) {
6647                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6648                         vsi = pf->vsi[i];
6649                         break;
6650                 }
6651         }
6652
6653         /* create a new VSI if none exists */
6654         if (!vsi) {
6655                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6656                                      pf->vsi[pf->lan_vsi]->seid, 0);
6657                 if (!vsi) {
6658                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6659                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6660                         return;
6661                 }
6662         }
6663
6664         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6665 }
6666
6667 /**
6668  * i40e_fdir_teardown - release the Flow Director resources
6669  * @pf: board private structure
6670  **/
6671 static void i40e_fdir_teardown(struct i40e_pf *pf)
6672 {
6673         int i;
6674
6675         i40e_fdir_filter_exit(pf);
6676         for (i = 0; i < pf->num_alloc_vsi; i++) {
6677                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6678                         i40e_vsi_release(pf->vsi[i]);
6679                         break;
6680                 }
6681         }
6682 }
6683
6684 /**
6685  * i40e_prep_for_reset - prep for the core to reset
6686  * @pf: board private structure
6687  *
6688  * Close up the VFs and other things in prep for PF Reset.
6689   **/
6690 static void i40e_prep_for_reset(struct i40e_pf *pf)
6691 {
6692         struct i40e_hw *hw = &pf->hw;
6693         i40e_status ret = 0;
6694         u32 v;
6695
6696         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6697         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6698                 return;
6699
6700         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6701
6702         /* quiesce the VSIs and their queues that are not already DOWN */
6703         i40e_pf_quiesce_all_vsi(pf);
6704
6705         for (v = 0; v < pf->num_alloc_vsi; v++) {
6706                 if (pf->vsi[v])
6707                         pf->vsi[v]->seid = 0;
6708         }
6709
6710         i40e_shutdown_adminq(&pf->hw);
6711
6712         /* call shutdown HMC */
6713         if (hw->hmc.hmc_obj) {
6714                 ret = i40e_shutdown_lan_hmc(hw);
6715                 if (ret)
6716                         dev_warn(&pf->pdev->dev,
6717                                  "shutdown_lan_hmc failed: %d\n", ret);
6718         }
6719 }
6720
6721 /**
6722  * i40e_send_version - update firmware with driver version
6723  * @pf: PF struct
6724  */
6725 static void i40e_send_version(struct i40e_pf *pf)
6726 {
6727         struct i40e_driver_version dv;
6728
6729         dv.major_version = DRV_VERSION_MAJOR;
6730         dv.minor_version = DRV_VERSION_MINOR;
6731         dv.build_version = DRV_VERSION_BUILD;
6732         dv.subbuild_version = 0;
6733         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6734         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6735 }
6736
6737 /**
6738  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6739  * @pf: board private structure
6740  * @reinit: if the Main VSI needs to re-initialized.
6741  **/
6742 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6743 {
6744         struct i40e_hw *hw = &pf->hw;
6745         u8 set_fc_aq_fail = 0;
6746         i40e_status ret;
6747         u32 val;
6748         u32 v;
6749
6750         /* Now we wait for GRST to settle out.
6751          * We don't have to delete the VEBs or VSIs from the hw switch
6752          * because the reset will make them disappear.
6753          */
6754         ret = i40e_pf_reset(hw);
6755         if (ret) {
6756                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6757                 set_bit(__I40E_RESET_FAILED, &pf->state);
6758                 goto clear_recovery;
6759         }
6760         pf->pfr_count++;
6761
6762         if (test_bit(__I40E_DOWN, &pf->state))
6763                 goto clear_recovery;
6764         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6765
6766         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6767         ret = i40e_init_adminq(&pf->hw);
6768         if (ret) {
6769                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6770                          i40e_stat_str(&pf->hw, ret),
6771                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6772                 goto clear_recovery;
6773         }
6774
6775         /* re-verify the eeprom if we just had an EMP reset */
6776         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6777                 i40e_verify_eeprom(pf);
6778
6779         i40e_clear_pxe_mode(hw);
6780         ret = i40e_get_capabilities(pf);
6781         if (ret)
6782                 goto end_core_reset;
6783
6784         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6785                                 hw->func_caps.num_rx_qp,
6786                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6787         if (ret) {
6788                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6789                 goto end_core_reset;
6790         }
6791         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6792         if (ret) {
6793                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6794                 goto end_core_reset;
6795         }
6796
6797 #ifdef CONFIG_I40E_DCB
6798         ret = i40e_init_pf_dcb(pf);
6799         if (ret) {
6800                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6801                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6802                 /* Continue without DCB enabled */
6803         }
6804 #endif /* CONFIG_I40E_DCB */
6805 #ifdef I40E_FCOE
6806         i40e_init_pf_fcoe(pf);
6807
6808 #endif
6809         /* do basic switch setup */
6810         ret = i40e_setup_pf_switch(pf, reinit);
6811         if (ret)
6812                 goto end_core_reset;
6813
6814         /* The driver only wants link up/down and module qualification
6815          * reports from firmware.  Note the negative logic.
6816          */
6817         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6818                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6819                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6820         if (ret)
6821                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6822                          i40e_stat_str(&pf->hw, ret),
6823                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6824
6825         /* make sure our flow control settings are restored */
6826         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6827         if (ret)
6828                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6829                         i40e_stat_str(&pf->hw, ret),
6830                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6831
6832         /* Rebuild the VSIs and VEBs that existed before reset.
6833          * They are still in our local switch element arrays, so only
6834          * need to rebuild the switch model in the HW.
6835          *
6836          * If there were VEBs but the reconstitution failed, we'll try
6837          * try to recover minimal use by getting the basic PF VSI working.
6838          */
6839         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6840                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6841                 /* find the one VEB connected to the MAC, and find orphans */
6842                 for (v = 0; v < I40E_MAX_VEB; v++) {
6843                         if (!pf->veb[v])
6844                                 continue;
6845
6846                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6847                             pf->veb[v]->uplink_seid == 0) {
6848                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6849
6850                                 if (!ret)
6851                                         continue;
6852
6853                                 /* If Main VEB failed, we're in deep doodoo,
6854                                  * so give up rebuilding the switch and set up
6855                                  * for minimal rebuild of PF VSI.
6856                                  * If orphan failed, we'll report the error
6857                                  * but try to keep going.
6858                                  */
6859                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6860                                         dev_info(&pf->pdev->dev,
6861                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6862                                                  ret);
6863                                         pf->vsi[pf->lan_vsi]->uplink_seid
6864                                                                 = pf->mac_seid;
6865                                         break;
6866                                 } else if (pf->veb[v]->uplink_seid == 0) {
6867                                         dev_info(&pf->pdev->dev,
6868                                                  "rebuild of orphan VEB failed: %d\n",
6869                                                  ret);
6870                                 }
6871                         }
6872                 }
6873         }
6874
6875         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6876                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6877                 /* no VEB, so rebuild only the Main VSI */
6878                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6879                 if (ret) {
6880                         dev_info(&pf->pdev->dev,
6881                                  "rebuild of Main VSI failed: %d\n", ret);
6882                         goto end_core_reset;
6883                 }
6884         }
6885
6886         /* Reconfigure hardware for allowing smaller MSS in the case
6887          * of TSO, so that we avoid the MDD being fired and causing
6888          * a reset in the case of small MSS+TSO.
6889          */
6890 #define I40E_REG_MSS          0x000E64DC
6891 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6892 #define I40E_64BYTE_MSS       0x400000
6893         val = rd32(hw, I40E_REG_MSS);
6894         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6895                 val &= ~I40E_REG_MSS_MIN_MASK;
6896                 val |= I40E_64BYTE_MSS;
6897                 wr32(hw, I40E_REG_MSS, val);
6898         }
6899
6900         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6901                 msleep(75);
6902                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6903                 if (ret)
6904                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6905                                  i40e_stat_str(&pf->hw, ret),
6906                                  i40e_aq_str(&pf->hw,
6907                                              pf->hw.aq.asq_last_status));
6908         }
6909         /* reinit the misc interrupt */
6910         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6911                 ret = i40e_setup_misc_vector(pf);
6912
6913         /* Add a filter to drop all Flow control frames from any VSI from being
6914          * transmitted. By doing so we stop a malicious VF from sending out
6915          * PAUSE or PFC frames and potentially controlling traffic for other
6916          * PF/VF VSIs.
6917          * The FW can still send Flow control frames if enabled.
6918          */
6919         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6920                                                        pf->main_vsi_seid);
6921
6922         /* restart the VSIs that were rebuilt and running before the reset */
6923         i40e_pf_unquiesce_all_vsi(pf);
6924
6925         if (pf->num_alloc_vfs) {
6926                 for (v = 0; v < pf->num_alloc_vfs; v++)
6927                         i40e_reset_vf(&pf->vf[v], true);
6928         }
6929
6930         /* tell the firmware that we're starting */
6931         i40e_send_version(pf);
6932
6933 end_core_reset:
6934         clear_bit(__I40E_RESET_FAILED, &pf->state);
6935 clear_recovery:
6936         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6937 }
6938
6939 /**
6940  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6941  * @pf: board private structure
6942  *
6943  * Close up the VFs and other things in prep for a Core Reset,
6944  * then get ready to rebuild the world.
6945  **/
6946 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6947 {
6948         i40e_prep_for_reset(pf);
6949         i40e_reset_and_rebuild(pf, false);
6950 }
6951
6952 /**
6953  * i40e_handle_mdd_event
6954  * @pf: pointer to the PF structure
6955  *
6956  * Called from the MDD irq handler to identify possibly malicious vfs
6957  **/
6958 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6959 {
6960         struct i40e_hw *hw = &pf->hw;
6961         bool mdd_detected = false;
6962         bool pf_mdd_detected = false;
6963         struct i40e_vf *vf;
6964         u32 reg;
6965         int i;
6966
6967         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6968                 return;
6969
6970         /* find what triggered the MDD event */
6971         reg = rd32(hw, I40E_GL_MDET_TX);
6972         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6973                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6974                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6975                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6976                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6977                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6978                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6979                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6980                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6981                                 pf->hw.func_caps.base_queue;
6982                 if (netif_msg_tx_err(pf))
6983                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6984                                  event, queue, pf_num, vf_num);
6985                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6986                 mdd_detected = true;
6987         }
6988         reg = rd32(hw, I40E_GL_MDET_RX);
6989         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6990                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6991                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6992                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6993                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6994                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6995                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6996                                 pf->hw.func_caps.base_queue;
6997                 if (netif_msg_rx_err(pf))
6998                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6999                                  event, queue, func);
7000                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7001                 mdd_detected = true;
7002         }
7003
7004         if (mdd_detected) {
7005                 reg = rd32(hw, I40E_PF_MDET_TX);
7006                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7007                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7008                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7009                         pf_mdd_detected = true;
7010                 }
7011                 reg = rd32(hw, I40E_PF_MDET_RX);
7012                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7013                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7014                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7015                         pf_mdd_detected = true;
7016                 }
7017                 /* Queue belongs to the PF, initiate a reset */
7018                 if (pf_mdd_detected) {
7019                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7020                         i40e_service_event_schedule(pf);
7021                 }
7022         }
7023
7024         /* see if one of the VFs needs its hand slapped */
7025         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7026                 vf = &(pf->vf[i]);
7027                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7028                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7029                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7030                         vf->num_mdd_events++;
7031                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7032                                  i);
7033                 }
7034
7035                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7036                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7037                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7038                         vf->num_mdd_events++;
7039                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7040                                  i);
7041                 }
7042
7043                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7044                         dev_info(&pf->pdev->dev,
7045                                  "Too many MDD events on VF %d, disabled\n", i);
7046                         dev_info(&pf->pdev->dev,
7047                                  "Use PF Control I/F to re-enable the VF\n");
7048                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7049                 }
7050         }
7051
7052         /* re-enable mdd interrupt cause */
7053         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7054         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7055         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7056         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7057         i40e_flush(hw);
7058 }
7059
7060 /**
7061  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7062  * @pf: board private structure
7063  **/
7064 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7065 {
7066 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
7067         struct i40e_hw *hw = &pf->hw;
7068         i40e_status ret;
7069         __be16 port;
7070         int i;
7071
7072         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7073                 return;
7074
7075         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7076
7077         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7078                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7079                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7080                         port = pf->udp_ports[i].index;
7081                         if (port)
7082                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7083                                                      pf->udp_ports[i].type,
7084                                                      NULL, NULL);
7085                         else
7086                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7087
7088                         if (ret) {
7089                                 dev_info(&pf->pdev->dev,
7090                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7091                                          port ? "add" : "delete",
7092                                          ntohs(port), i,
7093                                          i40e_stat_str(&pf->hw, ret),
7094                                          i40e_aq_str(&pf->hw,
7095                                                     pf->hw.aq.asq_last_status));
7096                                 pf->udp_ports[i].index = 0;
7097                         }
7098                 }
7099         }
7100 #endif
7101 }
7102
7103 /**
7104  * i40e_service_task - Run the driver's async subtasks
7105  * @work: pointer to work_struct containing our data
7106  **/
7107 static void i40e_service_task(struct work_struct *work)
7108 {
7109         struct i40e_pf *pf = container_of(work,
7110                                           struct i40e_pf,
7111                                           service_task);
7112         unsigned long start_time = jiffies;
7113
7114         /* don't bother with service tasks if a reset is in progress */
7115         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7116                 i40e_service_event_complete(pf);
7117                 return;
7118         }
7119
7120         i40e_detect_recover_hung(pf);
7121         i40e_reset_subtask(pf);
7122         i40e_handle_mdd_event(pf);
7123         i40e_vc_process_vflr_event(pf);
7124         i40e_watchdog_subtask(pf);
7125         i40e_fdir_reinit_subtask(pf);
7126         i40e_sync_filters_subtask(pf);
7127         i40e_sync_udp_filters_subtask(pf);
7128         i40e_clean_adminq_subtask(pf);
7129
7130         i40e_service_event_complete(pf);
7131
7132         /* If the tasks have taken longer than one timer cycle or there
7133          * is more work to be done, reschedule the service task now
7134          * rather than wait for the timer to tick again.
7135          */
7136         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7137             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7138             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7139             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7140                 i40e_service_event_schedule(pf);
7141 }
7142
7143 /**
7144  * i40e_service_timer - timer callback
7145  * @data: pointer to PF struct
7146  **/
7147 static void i40e_service_timer(unsigned long data)
7148 {
7149         struct i40e_pf *pf = (struct i40e_pf *)data;
7150
7151         mod_timer(&pf->service_timer,
7152                   round_jiffies(jiffies + pf->service_timer_period));
7153         i40e_service_event_schedule(pf);
7154 }
7155
7156 /**
7157  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7158  * @vsi: the VSI being configured
7159  **/
7160 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7161 {
7162         struct i40e_pf *pf = vsi->back;
7163
7164         switch (vsi->type) {
7165         case I40E_VSI_MAIN:
7166                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7167                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7168                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7169                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7170                         vsi->num_q_vectors = pf->num_lan_msix;
7171                 else
7172                         vsi->num_q_vectors = 1;
7173
7174                 break;
7175
7176         case I40E_VSI_FDIR:
7177                 vsi->alloc_queue_pairs = 1;
7178                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7179                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7180                 vsi->num_q_vectors = 1;
7181                 break;
7182
7183         case I40E_VSI_VMDQ2:
7184                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7185                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7186                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7187                 vsi->num_q_vectors = pf->num_vmdq_msix;
7188                 break;
7189
7190         case I40E_VSI_SRIOV:
7191                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7192                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7193                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7194                 break;
7195
7196 #ifdef I40E_FCOE
7197         case I40E_VSI_FCOE:
7198                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7199                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7200                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7201                 vsi->num_q_vectors = pf->num_fcoe_msix;
7202                 break;
7203
7204 #endif /* I40E_FCOE */
7205         default:
7206                 WARN_ON(1);
7207                 return -ENODATA;
7208         }
7209
7210         return 0;
7211 }
7212
7213 /**
7214  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7215  * @type: VSI pointer
7216  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7217  *
7218  * On error: returns error code (negative)
7219  * On success: returns 0
7220  **/
7221 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7222 {
7223         int size;
7224         int ret = 0;
7225
7226         /* allocate memory for both Tx and Rx ring pointers */
7227         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7228         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7229         if (!vsi->tx_rings)
7230                 return -ENOMEM;
7231         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7232
7233         if (alloc_qvectors) {
7234                 /* allocate memory for q_vector pointers */
7235                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7236                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7237                 if (!vsi->q_vectors) {
7238                         ret = -ENOMEM;
7239                         goto err_vectors;
7240                 }
7241         }
7242         return ret;
7243
7244 err_vectors:
7245         kfree(vsi->tx_rings);
7246         return ret;
7247 }
7248
7249 /**
7250  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7251  * @pf: board private structure
7252  * @type: type of VSI
7253  *
7254  * On error: returns error code (negative)
7255  * On success: returns vsi index in PF (positive)
7256  **/
7257 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7258 {
7259         int ret = -ENODEV;
7260         struct i40e_vsi *vsi;
7261         int vsi_idx;
7262         int i;
7263
7264         /* Need to protect the allocation of the VSIs at the PF level */
7265         mutex_lock(&pf->switch_mutex);
7266
7267         /* VSI list may be fragmented if VSI creation/destruction has
7268          * been happening.  We can afford to do a quick scan to look
7269          * for any free VSIs in the list.
7270          *
7271          * find next empty vsi slot, looping back around if necessary
7272          */
7273         i = pf->next_vsi;
7274         while (i < pf->num_alloc_vsi && pf->vsi[i])
7275                 i++;
7276         if (i >= pf->num_alloc_vsi) {
7277                 i = 0;
7278                 while (i < pf->next_vsi && pf->vsi[i])
7279                         i++;
7280         }
7281
7282         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7283                 vsi_idx = i;             /* Found one! */
7284         } else {
7285                 ret = -ENODEV;
7286                 goto unlock_pf;  /* out of VSI slots! */
7287         }
7288         pf->next_vsi = ++i;
7289
7290         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7291         if (!vsi) {
7292                 ret = -ENOMEM;
7293                 goto unlock_pf;
7294         }
7295         vsi->type = type;
7296         vsi->back = pf;
7297         set_bit(__I40E_DOWN, &vsi->state);
7298         vsi->flags = 0;
7299         vsi->idx = vsi_idx;
7300         vsi->rx_itr_setting = pf->rx_itr_default;
7301         vsi->tx_itr_setting = pf->tx_itr_default;
7302         vsi->int_rate_limit = 0;
7303         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7304                                 pf->rss_table_size : 64;
7305         vsi->netdev_registered = false;
7306         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7307         INIT_LIST_HEAD(&vsi->mac_filter_list);
7308         vsi->irqs_ready = false;
7309
7310         ret = i40e_set_num_rings_in_vsi(vsi);
7311         if (ret)
7312                 goto err_rings;
7313
7314         ret = i40e_vsi_alloc_arrays(vsi, true);
7315         if (ret)
7316                 goto err_rings;
7317
7318         /* Setup default MSIX irq handler for VSI */
7319         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7320
7321         /* Initialize VSI lock */
7322         spin_lock_init(&vsi->mac_filter_list_lock);
7323         pf->vsi[vsi_idx] = vsi;
7324         ret = vsi_idx;
7325         goto unlock_pf;
7326
7327 err_rings:
7328         pf->next_vsi = i - 1;
7329         kfree(vsi);
7330 unlock_pf:
7331         mutex_unlock(&pf->switch_mutex);
7332         return ret;
7333 }
7334
7335 /**
7336  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7337  * @type: VSI pointer
7338  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7339  *
7340  * On error: returns error code (negative)
7341  * On success: returns 0
7342  **/
7343 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7344 {
7345         /* free the ring and vector containers */
7346         if (free_qvectors) {
7347                 kfree(vsi->q_vectors);
7348                 vsi->q_vectors = NULL;
7349         }
7350         kfree(vsi->tx_rings);
7351         vsi->tx_rings = NULL;
7352         vsi->rx_rings = NULL;
7353 }
7354
7355 /**
7356  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7357  * and lookup table
7358  * @vsi: Pointer to VSI structure
7359  */
7360 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7361 {
7362         if (!vsi)
7363                 return;
7364
7365         kfree(vsi->rss_hkey_user);
7366         vsi->rss_hkey_user = NULL;
7367
7368         kfree(vsi->rss_lut_user);
7369         vsi->rss_lut_user = NULL;
7370 }
7371
7372 /**
7373  * i40e_vsi_clear - Deallocate the VSI provided
7374  * @vsi: the VSI being un-configured
7375  **/
7376 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7377 {
7378         struct i40e_pf *pf;
7379
7380         if (!vsi)
7381                 return 0;
7382
7383         if (!vsi->back)
7384                 goto free_vsi;
7385         pf = vsi->back;
7386
7387         mutex_lock(&pf->switch_mutex);
7388         if (!pf->vsi[vsi->idx]) {
7389                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7390                         vsi->idx, vsi->idx, vsi, vsi->type);
7391                 goto unlock_vsi;
7392         }
7393
7394         if (pf->vsi[vsi->idx] != vsi) {
7395                 dev_err(&pf->pdev->dev,
7396                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7397                         pf->vsi[vsi->idx]->idx,
7398                         pf->vsi[vsi->idx],
7399                         pf->vsi[vsi->idx]->type,
7400                         vsi->idx, vsi, vsi->type);
7401                 goto unlock_vsi;
7402         }
7403
7404         /* updates the PF for this cleared vsi */
7405         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7406         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7407
7408         i40e_vsi_free_arrays(vsi, true);
7409         i40e_clear_rss_config_user(vsi);
7410
7411         pf->vsi[vsi->idx] = NULL;
7412         if (vsi->idx < pf->next_vsi)
7413                 pf->next_vsi = vsi->idx;
7414
7415 unlock_vsi:
7416         mutex_unlock(&pf->switch_mutex);
7417 free_vsi:
7418         kfree(vsi);
7419
7420         return 0;
7421 }
7422
7423 /**
7424  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7425  * @vsi: the VSI being cleaned
7426  **/
7427 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7428 {
7429         int i;
7430
7431         if (vsi->tx_rings && vsi->tx_rings[0]) {
7432                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7433                         kfree_rcu(vsi->tx_rings[i], rcu);
7434                         vsi->tx_rings[i] = NULL;
7435                         vsi->rx_rings[i] = NULL;
7436                 }
7437         }
7438 }
7439
7440 /**
7441  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7442  * @vsi: the VSI being configured
7443  **/
7444 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7445 {
7446         struct i40e_ring *tx_ring, *rx_ring;
7447         struct i40e_pf *pf = vsi->back;
7448         int i;
7449
7450         /* Set basic values in the rings to be used later during open() */
7451         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7452                 /* allocate space for both Tx and Rx in one shot */
7453                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7454                 if (!tx_ring)
7455                         goto err_out;
7456
7457                 tx_ring->queue_index = i;
7458                 tx_ring->reg_idx = vsi->base_queue + i;
7459                 tx_ring->ring_active = false;
7460                 tx_ring->vsi = vsi;
7461                 tx_ring->netdev = vsi->netdev;
7462                 tx_ring->dev = &pf->pdev->dev;
7463                 tx_ring->count = vsi->num_desc;
7464                 tx_ring->size = 0;
7465                 tx_ring->dcb_tc = 0;
7466                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7467                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7468                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7469                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7470                 vsi->tx_rings[i] = tx_ring;
7471
7472                 rx_ring = &tx_ring[1];
7473                 rx_ring->queue_index = i;
7474                 rx_ring->reg_idx = vsi->base_queue + i;
7475                 rx_ring->ring_active = false;
7476                 rx_ring->vsi = vsi;
7477                 rx_ring->netdev = vsi->netdev;
7478                 rx_ring->dev = &pf->pdev->dev;
7479                 rx_ring->count = vsi->num_desc;
7480                 rx_ring->size = 0;
7481                 rx_ring->dcb_tc = 0;
7482                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7483                         set_ring_16byte_desc_enabled(rx_ring);
7484                 else
7485                         clear_ring_16byte_desc_enabled(rx_ring);
7486                 vsi->rx_rings[i] = rx_ring;
7487         }
7488
7489         return 0;
7490
7491 err_out:
7492         i40e_vsi_clear_rings(vsi);
7493         return -ENOMEM;
7494 }
7495
7496 /**
7497  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7498  * @pf: board private structure
7499  * @vectors: the number of MSI-X vectors to request
7500  *
7501  * Returns the number of vectors reserved, or error
7502  **/
7503 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7504 {
7505         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7506                                         I40E_MIN_MSIX, vectors);
7507         if (vectors < 0) {
7508                 dev_info(&pf->pdev->dev,
7509                          "MSI-X vector reservation failed: %d\n", vectors);
7510                 vectors = 0;
7511         }
7512
7513         return vectors;
7514 }
7515
7516 /**
7517  * i40e_init_msix - Setup the MSIX capability
7518  * @pf: board private structure
7519  *
7520  * Work with the OS to set up the MSIX vectors needed.
7521  *
7522  * Returns the number of vectors reserved or negative on failure
7523  **/
7524 static int i40e_init_msix(struct i40e_pf *pf)
7525 {
7526         struct i40e_hw *hw = &pf->hw;
7527         int vectors_left;
7528         int v_budget, i;
7529         int v_actual;
7530
7531         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7532                 return -ENODEV;
7533
7534         /* The number of vectors we'll request will be comprised of:
7535          *   - Add 1 for "other" cause for Admin Queue events, etc.
7536          *   - The number of LAN queue pairs
7537          *      - Queues being used for RSS.
7538          *              We don't need as many as max_rss_size vectors.
7539          *              use rss_size instead in the calculation since that
7540          *              is governed by number of cpus in the system.
7541          *      - assumes symmetric Tx/Rx pairing
7542          *   - The number of VMDq pairs
7543 #ifdef I40E_FCOE
7544          *   - The number of FCOE qps.
7545 #endif
7546          * Once we count this up, try the request.
7547          *
7548          * If we can't get what we want, we'll simplify to nearly nothing
7549          * and try again.  If that still fails, we punt.
7550          */
7551         vectors_left = hw->func_caps.num_msix_vectors;
7552         v_budget = 0;
7553
7554         /* reserve one vector for miscellaneous handler */
7555         if (vectors_left) {
7556                 v_budget++;
7557                 vectors_left--;
7558         }
7559
7560         /* reserve vectors for the main PF traffic queues */
7561         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7562         vectors_left -= pf->num_lan_msix;
7563         v_budget += pf->num_lan_msix;
7564
7565         /* reserve one vector for sideband flow director */
7566         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7567                 if (vectors_left) {
7568                         v_budget++;
7569                         vectors_left--;
7570                 } else {
7571                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7572                 }
7573         }
7574
7575 #ifdef I40E_FCOE
7576         /* can we reserve enough for FCoE? */
7577         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7578                 if (!vectors_left)
7579                         pf->num_fcoe_msix = 0;
7580                 else if (vectors_left >= pf->num_fcoe_qps)
7581                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7582                 else
7583                         pf->num_fcoe_msix = 1;
7584                 v_budget += pf->num_fcoe_msix;
7585                 vectors_left -= pf->num_fcoe_msix;
7586         }
7587
7588 #endif
7589         /* any vectors left over go for VMDq support */
7590         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7591                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7592                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7593
7594                 /* if we're short on vectors for what's desired, we limit
7595                  * the queues per vmdq.  If this is still more than are
7596                  * available, the user will need to change the number of
7597                  * queues/vectors used by the PF later with the ethtool
7598                  * channels command
7599                  */
7600                 if (vmdq_vecs < vmdq_vecs_wanted)
7601                         pf->num_vmdq_qps = 1;
7602                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7603
7604                 v_budget += vmdq_vecs;
7605                 vectors_left -= vmdq_vecs;
7606         }
7607
7608         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7609                                    GFP_KERNEL);
7610         if (!pf->msix_entries)
7611                 return -ENOMEM;
7612
7613         for (i = 0; i < v_budget; i++)
7614                 pf->msix_entries[i].entry = i;
7615         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7616
7617         if (v_actual != v_budget) {
7618                 /* If we have limited resources, we will start with no vectors
7619                  * for the special features and then allocate vectors to some
7620                  * of these features based on the policy and at the end disable
7621                  * the features that did not get any vectors.
7622                  */
7623 #ifdef I40E_FCOE
7624                 pf->num_fcoe_qps = 0;
7625                 pf->num_fcoe_msix = 0;
7626 #endif
7627                 pf->num_vmdq_msix = 0;
7628         }
7629
7630         if (v_actual < I40E_MIN_MSIX) {
7631                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7632                 kfree(pf->msix_entries);
7633                 pf->msix_entries = NULL;
7634                 return -ENODEV;
7635
7636         } else if (v_actual == I40E_MIN_MSIX) {
7637                 /* Adjust for minimal MSIX use */
7638                 pf->num_vmdq_vsis = 0;
7639                 pf->num_vmdq_qps = 0;
7640                 pf->num_lan_qps = 1;
7641                 pf->num_lan_msix = 1;
7642
7643         } else if (v_actual != v_budget) {
7644                 int vec;
7645
7646                 /* reserve the misc vector */
7647                 vec = v_actual - 1;
7648
7649                 /* Scale vector usage down */
7650                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7651                 pf->num_vmdq_vsis = 1;
7652                 pf->num_vmdq_qps = 1;
7653                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7654
7655                 /* partition out the remaining vectors */
7656                 switch (vec) {
7657                 case 2:
7658                         pf->num_lan_msix = 1;
7659                         break;
7660                 case 3:
7661 #ifdef I40E_FCOE
7662                         /* give one vector to FCoE */
7663                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7664                                 pf->num_lan_msix = 1;
7665                                 pf->num_fcoe_msix = 1;
7666                         }
7667 #else
7668                         pf->num_lan_msix = 2;
7669 #endif
7670                         break;
7671                 default:
7672 #ifdef I40E_FCOE
7673                         /* give one vector to FCoE */
7674                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7675                                 pf->num_fcoe_msix = 1;
7676                                 vec--;
7677                         }
7678 #endif
7679                         /* give the rest to the PF */
7680                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7681                         break;
7682                 }
7683         }
7684
7685         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7686             (pf->num_vmdq_msix == 0)) {
7687                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7688                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7689         }
7690 #ifdef I40E_FCOE
7691
7692         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7693                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7694                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7695         }
7696 #endif
7697         return v_actual;
7698 }
7699
7700 /**
7701  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7702  * @vsi: the VSI being configured
7703  * @v_idx: index of the vector in the vsi struct
7704  *
7705  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7706  **/
7707 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7708 {
7709         struct i40e_q_vector *q_vector;
7710
7711         /* allocate q_vector */
7712         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7713         if (!q_vector)
7714                 return -ENOMEM;
7715
7716         q_vector->vsi = vsi;
7717         q_vector->v_idx = v_idx;
7718         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7719         if (vsi->netdev)
7720                 netif_napi_add(vsi->netdev, &q_vector->napi,
7721                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7722
7723         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7724         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7725
7726         /* tie q_vector and vsi together */
7727         vsi->q_vectors[v_idx] = q_vector;
7728
7729         return 0;
7730 }
7731
7732 /**
7733  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7734  * @vsi: the VSI being configured
7735  *
7736  * We allocate one q_vector per queue interrupt.  If allocation fails we
7737  * return -ENOMEM.
7738  **/
7739 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7740 {
7741         struct i40e_pf *pf = vsi->back;
7742         int v_idx, num_q_vectors;
7743         int err;
7744
7745         /* if not MSIX, give the one vector only to the LAN VSI */
7746         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7747                 num_q_vectors = vsi->num_q_vectors;
7748         else if (vsi == pf->vsi[pf->lan_vsi])
7749                 num_q_vectors = 1;
7750         else
7751                 return -EINVAL;
7752
7753         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7754                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7755                 if (err)
7756                         goto err_out;
7757         }
7758
7759         return 0;
7760
7761 err_out:
7762         while (v_idx--)
7763                 i40e_free_q_vector(vsi, v_idx);
7764
7765         return err;
7766 }
7767
7768 /**
7769  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7770  * @pf: board private structure to initialize
7771  **/
7772 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7773 {
7774         int vectors = 0;
7775         ssize_t size;
7776
7777         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7778                 vectors = i40e_init_msix(pf);
7779                 if (vectors < 0) {
7780                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7781 #ifdef I40E_FCOE
7782                                        I40E_FLAG_FCOE_ENABLED   |
7783 #endif
7784                                        I40E_FLAG_RSS_ENABLED    |
7785                                        I40E_FLAG_DCB_CAPABLE    |
7786                                        I40E_FLAG_SRIOV_ENABLED  |
7787                                        I40E_FLAG_FD_SB_ENABLED  |
7788                                        I40E_FLAG_FD_ATR_ENABLED |
7789                                        I40E_FLAG_VMDQ_ENABLED);
7790
7791                         /* rework the queue expectations without MSIX */
7792                         i40e_determine_queue_usage(pf);
7793                 }
7794         }
7795
7796         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7797             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7798                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7799                 vectors = pci_enable_msi(pf->pdev);
7800                 if (vectors < 0) {
7801                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7802                                  vectors);
7803                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7804                 }
7805                 vectors = 1;  /* one MSI or Legacy vector */
7806         }
7807
7808         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7809                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7810
7811         /* set up vector assignment tracking */
7812         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7813         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7814         if (!pf->irq_pile) {
7815                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7816                 return -ENOMEM;
7817         }
7818         pf->irq_pile->num_entries = vectors;
7819         pf->irq_pile->search_hint = 0;
7820
7821         /* track first vector for misc interrupts, ignore return */
7822         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7823
7824         return 0;
7825 }
7826
7827 /**
7828  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7829  * @pf: board private structure
7830  *
7831  * This sets up the handler for MSIX 0, which is used to manage the
7832  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7833  * when in MSI or Legacy interrupt mode.
7834  **/
7835 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7836 {
7837         struct i40e_hw *hw = &pf->hw;
7838         int err = 0;
7839
7840         /* Only request the irq if this is the first time through, and
7841          * not when we're rebuilding after a Reset
7842          */
7843         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7844                 err = request_irq(pf->msix_entries[0].vector,
7845                                   i40e_intr, 0, pf->int_name, pf);
7846                 if (err) {
7847                         dev_info(&pf->pdev->dev,
7848                                  "request_irq for %s failed: %d\n",
7849                                  pf->int_name, err);
7850                         return -EFAULT;
7851                 }
7852         }
7853
7854         i40e_enable_misc_int_causes(pf);
7855
7856         /* associate no queues to the misc vector */
7857         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7858         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7859
7860         i40e_flush(hw);
7861
7862         i40e_irq_dynamic_enable_icr0(pf);
7863
7864         return err;
7865 }
7866
7867 /**
7868  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7869  * @vsi: vsi structure
7870  * @seed: RSS hash seed
7871  **/
7872 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7873                               u8 *lut, u16 lut_size)
7874 {
7875         struct i40e_aqc_get_set_rss_key_data rss_key;
7876         struct i40e_pf *pf = vsi->back;
7877         struct i40e_hw *hw = &pf->hw;
7878         bool pf_lut = false;
7879         u8 *rss_lut;
7880         int ret, i;
7881
7882         memset(&rss_key, 0, sizeof(rss_key));
7883         memcpy(&rss_key, seed, sizeof(rss_key));
7884
7885         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7886         if (!rss_lut)
7887                 return -ENOMEM;
7888
7889         /* Populate the LUT with max no. of queues in round robin fashion */
7890         for (i = 0; i < vsi->rss_table_size; i++)
7891                 rss_lut[i] = i % vsi->rss_size;
7892
7893         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7894         if (ret) {
7895                 dev_info(&pf->pdev->dev,
7896                          "Cannot set RSS key, err %s aq_err %s\n",
7897                          i40e_stat_str(&pf->hw, ret),
7898                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7899                 goto config_rss_aq_out;
7900         }
7901
7902         if (vsi->type == I40E_VSI_MAIN)
7903                 pf_lut = true;
7904
7905         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7906                                   vsi->rss_table_size);
7907         if (ret)
7908                 dev_info(&pf->pdev->dev,
7909                          "Cannot set RSS lut, err %s aq_err %s\n",
7910                          i40e_stat_str(&pf->hw, ret),
7911                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7912
7913 config_rss_aq_out:
7914         kfree(rss_lut);
7915         return ret;
7916 }
7917
7918 /**
7919  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7920  * @vsi: VSI structure
7921  **/
7922 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7923 {
7924         u8 seed[I40E_HKEY_ARRAY_SIZE];
7925         struct i40e_pf *pf = vsi->back;
7926         u8 *lut;
7927         int ret;
7928
7929         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7930                 return 0;
7931
7932         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7933         if (!lut)
7934                 return -ENOMEM;
7935
7936         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7937         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7938         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7939         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7940         kfree(lut);
7941
7942         return ret;
7943 }
7944
7945 /**
7946  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
7947  * @vsi: Pointer to vsi structure
7948  * @seed: Buffter to store the hash keys
7949  * @lut: Buffer to store the lookup table entries
7950  * @lut_size: Size of buffer to store the lookup table entries
7951  *
7952  * Return 0 on success, negative on failure
7953  */
7954 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7955                            u8 *lut, u16 lut_size)
7956 {
7957         struct i40e_pf *pf = vsi->back;
7958         struct i40e_hw *hw = &pf->hw;
7959         int ret = 0;
7960
7961         if (seed) {
7962                 ret = i40e_aq_get_rss_key(hw, vsi->id,
7963                         (struct i40e_aqc_get_set_rss_key_data *)seed);
7964                 if (ret) {
7965                         dev_info(&pf->pdev->dev,
7966                                  "Cannot get RSS key, err %s aq_err %s\n",
7967                                  i40e_stat_str(&pf->hw, ret),
7968                                  i40e_aq_str(&pf->hw,
7969                                              pf->hw.aq.asq_last_status));
7970                         return ret;
7971                 }
7972         }
7973
7974         if (lut) {
7975                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
7976
7977                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
7978                 if (ret) {
7979                         dev_info(&pf->pdev->dev,
7980                                  "Cannot get RSS lut, err %s aq_err %s\n",
7981                                  i40e_stat_str(&pf->hw, ret),
7982                                  i40e_aq_str(&pf->hw,
7983                                              pf->hw.aq.asq_last_status));
7984                         return ret;
7985                 }
7986         }
7987
7988         return ret;
7989 }
7990
7991 /**
7992  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7993  * @vsi: Pointer to vsi structure
7994  * @seed: RSS hash seed
7995  * @lut: Lookup table
7996  * @lut_size: Lookup table size
7997  *
7998  * Returns 0 on success, negative on failure
7999  **/
8000 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8001                                const u8 *lut, u16 lut_size)
8002 {
8003         struct i40e_pf *pf = vsi->back;
8004         struct i40e_hw *hw = &pf->hw;
8005         u8 i;
8006
8007         /* Fill out hash function seed */
8008         if (seed) {
8009                 u32 *seed_dw = (u32 *)seed;
8010
8011                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8012                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
8013         }
8014
8015         if (lut) {
8016                 u32 *lut_dw = (u32 *)lut;
8017
8018                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8019                         return -EINVAL;
8020
8021                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8022                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8023         }
8024         i40e_flush(hw);
8025
8026         return 0;
8027 }
8028
8029 /**
8030  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8031  * @vsi: Pointer to VSI structure
8032  * @seed: Buffer to store the keys
8033  * @lut: Buffer to store the lookup table entries
8034  * @lut_size: Size of buffer to store the lookup table entries
8035  *
8036  * Returns 0 on success, negative on failure
8037  */
8038 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8039                             u8 *lut, u16 lut_size)
8040 {
8041         struct i40e_pf *pf = vsi->back;
8042         struct i40e_hw *hw = &pf->hw;
8043         u16 i;
8044
8045         if (seed) {
8046                 u32 *seed_dw = (u32 *)seed;
8047
8048                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8049                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
8050         }
8051         if (lut) {
8052                 u32 *lut_dw = (u32 *)lut;
8053
8054                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8055                         return -EINVAL;
8056                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8057                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8058         }
8059
8060         return 0;
8061 }
8062
8063 /**
8064  * i40e_config_rss - Configure RSS keys and lut
8065  * @vsi: Pointer to VSI structure
8066  * @seed: RSS hash seed
8067  * @lut: Lookup table
8068  * @lut_size: Lookup table size
8069  *
8070  * Returns 0 on success, negative on failure
8071  */
8072 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8073 {
8074         struct i40e_pf *pf = vsi->back;
8075
8076         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8077                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8078         else
8079                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8080 }
8081
8082 /**
8083  * i40e_get_rss - Get RSS keys and lut
8084  * @vsi: Pointer to VSI structure
8085  * @seed: Buffer to store the keys
8086  * @lut: Buffer to store the lookup table entries
8087  * lut_size: Size of buffer to store the lookup table entries
8088  *
8089  * Returns 0 on success, negative on failure
8090  */
8091 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8092 {
8093         struct i40e_pf *pf = vsi->back;
8094
8095         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8096                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8097         else
8098                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8099 }
8100
8101 /**
8102  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8103  * @pf: Pointer to board private structure
8104  * @lut: Lookup table
8105  * @rss_table_size: Lookup table size
8106  * @rss_size: Range of queue number for hashing
8107  */
8108 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8109                               u16 rss_table_size, u16 rss_size)
8110 {
8111         u16 i;
8112
8113         for (i = 0; i < rss_table_size; i++)
8114                 lut[i] = i % rss_size;
8115 }
8116
8117 /**
8118  * i40e_pf_config_rss - Prepare for RSS if used
8119  * @pf: board private structure
8120  **/
8121 static int i40e_pf_config_rss(struct i40e_pf *pf)
8122 {
8123         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8124         u8 seed[I40E_HKEY_ARRAY_SIZE];
8125         u8 *lut;
8126         struct i40e_hw *hw = &pf->hw;
8127         u32 reg_val;
8128         u64 hena;
8129         int ret;
8130
8131         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8132         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8133                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8134         hena |= i40e_pf_get_default_rss_hena(pf);
8135
8136         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8137         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8138
8139         /* Determine the RSS table size based on the hardware capabilities */
8140         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8141         reg_val = (pf->rss_table_size == 512) ?
8142                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8143                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8144         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8145
8146         /* Determine the RSS size of the VSI */
8147         if (!vsi->rss_size)
8148                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8149                                       vsi->num_queue_pairs);
8150
8151         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8152         if (!lut)
8153                 return -ENOMEM;
8154
8155         /* Use user configured lut if there is one, otherwise use default */
8156         if (vsi->rss_lut_user)
8157                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8158         else
8159                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8160
8161         /* Use user configured hash key if there is one, otherwise
8162          * use default.
8163          */
8164         if (vsi->rss_hkey_user)
8165                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8166         else
8167                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8168         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8169         kfree(lut);
8170
8171         return ret;
8172 }
8173
8174 /**
8175  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8176  * @pf: board private structure
8177  * @queue_count: the requested queue count for rss.
8178  *
8179  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8180  * count which may be different from the requested queue count.
8181  **/
8182 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8183 {
8184         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8185         int new_rss_size;
8186
8187         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8188                 return 0;
8189
8190         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8191
8192         if (queue_count != vsi->num_queue_pairs) {
8193                 vsi->req_queue_pairs = queue_count;
8194                 i40e_prep_for_reset(pf);
8195
8196                 pf->alloc_rss_size = new_rss_size;
8197
8198                 i40e_reset_and_rebuild(pf, true);
8199
8200                 /* Discard the user configured hash keys and lut, if less
8201                  * queues are enabled.
8202                  */
8203                 if (queue_count < vsi->rss_size) {
8204                         i40e_clear_rss_config_user(vsi);
8205                         dev_dbg(&pf->pdev->dev,
8206                                 "discard user configured hash keys and lut\n");
8207                 }
8208
8209                 /* Reset vsi->rss_size, as number of enabled queues changed */
8210                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8211                                       vsi->num_queue_pairs);
8212
8213                 i40e_pf_config_rss(pf);
8214         }
8215         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8216                  pf->alloc_rss_size, pf->rss_size_max);
8217         return pf->alloc_rss_size;
8218 }
8219
8220 /**
8221  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8222  * @pf: board private structure
8223  **/
8224 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8225 {
8226         i40e_status status;
8227         bool min_valid, max_valid;
8228         u32 max_bw, min_bw;
8229
8230         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8231                                            &min_valid, &max_valid);
8232
8233         if (!status) {
8234                 if (min_valid)
8235                         pf->npar_min_bw = min_bw;
8236                 if (max_valid)
8237                         pf->npar_max_bw = max_bw;
8238         }
8239
8240         return status;
8241 }
8242
8243 /**
8244  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8245  * @pf: board private structure
8246  **/
8247 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8248 {
8249         struct i40e_aqc_configure_partition_bw_data bw_data;
8250         i40e_status status;
8251
8252         /* Set the valid bit for this PF */
8253         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8254         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8255         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8256
8257         /* Set the new bandwidths */
8258         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8259
8260         return status;
8261 }
8262
8263 /**
8264  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8265  * @pf: board private structure
8266  **/
8267 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8268 {
8269         /* Commit temporary BW setting to permanent NVM image */
8270         enum i40e_admin_queue_err last_aq_status;
8271         i40e_status ret;
8272         u16 nvm_word;
8273
8274         if (pf->hw.partition_id != 1) {
8275                 dev_info(&pf->pdev->dev,
8276                          "Commit BW only works on partition 1! This is partition %d",
8277                          pf->hw.partition_id);
8278                 ret = I40E_NOT_SUPPORTED;
8279                 goto bw_commit_out;
8280         }
8281
8282         /* Acquire NVM for read access */
8283         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8284         last_aq_status = pf->hw.aq.asq_last_status;
8285         if (ret) {
8286                 dev_info(&pf->pdev->dev,
8287                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8288                          i40e_stat_str(&pf->hw, ret),
8289                          i40e_aq_str(&pf->hw, last_aq_status));
8290                 goto bw_commit_out;
8291         }
8292
8293         /* Read word 0x10 of NVM - SW compatibility word 1 */
8294         ret = i40e_aq_read_nvm(&pf->hw,
8295                                I40E_SR_NVM_CONTROL_WORD,
8296                                0x10, sizeof(nvm_word), &nvm_word,
8297                                false, NULL);
8298         /* Save off last admin queue command status before releasing
8299          * the NVM
8300          */
8301         last_aq_status = pf->hw.aq.asq_last_status;
8302         i40e_release_nvm(&pf->hw);
8303         if (ret) {
8304                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8305                          i40e_stat_str(&pf->hw, ret),
8306                          i40e_aq_str(&pf->hw, last_aq_status));
8307                 goto bw_commit_out;
8308         }
8309
8310         /* Wait a bit for NVM release to complete */
8311         msleep(50);
8312
8313         /* Acquire NVM for write access */
8314         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8315         last_aq_status = pf->hw.aq.asq_last_status;
8316         if (ret) {
8317                 dev_info(&pf->pdev->dev,
8318                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8319                          i40e_stat_str(&pf->hw, ret),
8320                          i40e_aq_str(&pf->hw, last_aq_status));
8321                 goto bw_commit_out;
8322         }
8323         /* Write it back out unchanged to initiate update NVM,
8324          * which will force a write of the shadow (alt) RAM to
8325          * the NVM - thus storing the bandwidth values permanently.
8326          */
8327         ret = i40e_aq_update_nvm(&pf->hw,
8328                                  I40E_SR_NVM_CONTROL_WORD,
8329                                  0x10, sizeof(nvm_word),
8330                                  &nvm_word, true, NULL);
8331         /* Save off last admin queue command status before releasing
8332          * the NVM
8333          */
8334         last_aq_status = pf->hw.aq.asq_last_status;
8335         i40e_release_nvm(&pf->hw);
8336         if (ret)
8337                 dev_info(&pf->pdev->dev,
8338                          "BW settings NOT SAVED, err %s aq_err %s\n",
8339                          i40e_stat_str(&pf->hw, ret),
8340                          i40e_aq_str(&pf->hw, last_aq_status));
8341 bw_commit_out:
8342
8343         return ret;
8344 }
8345
8346 /**
8347  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8348  * @pf: board private structure to initialize
8349  *
8350  * i40e_sw_init initializes the Adapter private data structure.
8351  * Fields are initialized based on PCI device information and
8352  * OS network device settings (MTU size).
8353  **/
8354 static int i40e_sw_init(struct i40e_pf *pf)
8355 {
8356         int err = 0;
8357         int size;
8358
8359         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8360                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8361         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8362         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8363                 if (I40E_DEBUG_USER & debug)
8364                         pf->hw.debug_mask = debug;
8365                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8366                                                 I40E_DEFAULT_MSG_ENABLE);
8367         }
8368
8369         /* Set default capability flags */
8370         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8371                     I40E_FLAG_MSI_ENABLED     |
8372                     I40E_FLAG_LINK_POLLING_ENABLED |
8373                     I40E_FLAG_MSIX_ENABLED;
8374
8375         if (iommu_present(&pci_bus_type))
8376                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8377         else
8378                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8379
8380         /* Set default ITR */
8381         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8382         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8383
8384         /* Depending on PF configurations, it is possible that the RSS
8385          * maximum might end up larger than the available queues
8386          */
8387         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8388         pf->alloc_rss_size = 1;
8389         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8390         pf->rss_size_max = min_t(int, pf->rss_size_max,
8391                                  pf->hw.func_caps.num_tx_qp);
8392         if (pf->hw.func_caps.rss) {
8393                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8394                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8395                                            num_online_cpus());
8396         }
8397
8398         /* MFP mode enabled */
8399         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8400                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8401                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8402                 if (i40e_get_npar_bw_setting(pf))
8403                         dev_warn(&pf->pdev->dev,
8404                                  "Could not get NPAR bw settings\n");
8405                 else
8406                         dev_info(&pf->pdev->dev,
8407                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8408                                  pf->npar_min_bw, pf->npar_max_bw);
8409         }
8410
8411         /* FW/NVM is not yet fixed in this regard */
8412         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8413             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8414                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8415                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8416                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8417                     pf->hw.num_partitions > 1)
8418                         dev_info(&pf->pdev->dev,
8419                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8420                 else
8421                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8422                 pf->fdir_pf_filter_count =
8423                                  pf->hw.func_caps.fd_filters_guaranteed;
8424                 pf->hw.fdir_shared_filter_count =
8425                                  pf->hw.func_caps.fd_filters_best_effort;
8426         }
8427
8428         if (((pf->hw.mac.type == I40E_MAC_X710) ||
8429              (pf->hw.mac.type == I40E_MAC_XL710)) &&
8430             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8431             (pf->hw.aq.fw_maj_ver < 4)))
8432                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8433
8434         if (pf->hw.func_caps.vmdq) {
8435                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8436                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8437                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8438         }
8439
8440 #ifdef I40E_FCOE
8441         i40e_init_pf_fcoe(pf);
8442
8443 #endif /* I40E_FCOE */
8444 #ifdef CONFIG_PCI_IOV
8445         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8446                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8447                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8448                 pf->num_req_vfs = min_t(int,
8449                                         pf->hw.func_caps.num_vfs,
8450                                         I40E_MAX_VF_COUNT);
8451         }
8452 #endif /* CONFIG_PCI_IOV */
8453         if (pf->hw.mac.type == I40E_MAC_X722) {
8454                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8455                              I40E_FLAG_128_QP_RSS_CAPABLE |
8456                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8457                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8458                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8459                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8460                              I40E_FLAG_100M_SGMII_CAPABLE |
8461                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8462         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8463                    ((pf->hw.aq.api_maj_ver == 1) &&
8464                     (pf->hw.aq.api_min_ver > 4))) {
8465                 /* Supported in FW API version higher than 1.4 */
8466                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8467         }
8468
8469         pf->eeprom_version = 0xDEAD;
8470         pf->lan_veb = I40E_NO_VEB;
8471         pf->lan_vsi = I40E_NO_VSI;
8472
8473         /* By default FW has this off for performance reasons */
8474         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8475
8476         /* set up queue assignment tracking */
8477         size = sizeof(struct i40e_lump_tracking)
8478                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8479         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8480         if (!pf->qp_pile) {
8481                 err = -ENOMEM;
8482                 goto sw_init_done;
8483         }
8484         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8485         pf->qp_pile->search_hint = 0;
8486
8487         pf->tx_timeout_recovery_level = 1;
8488
8489         mutex_init(&pf->switch_mutex);
8490
8491         /* If NPAR is enabled nudge the Tx scheduler */
8492         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8493                 i40e_set_npar_bw_setting(pf);
8494
8495 sw_init_done:
8496         return err;
8497 }
8498
8499 /**
8500  * i40e_set_ntuple - set the ntuple feature flag and take action
8501  * @pf: board private structure to initialize
8502  * @features: the feature set that the stack is suggesting
8503  *
8504  * returns a bool to indicate if reset needs to happen
8505  **/
8506 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8507 {
8508         bool need_reset = false;
8509
8510         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8511          * the state changed, we need to reset.
8512          */
8513         if (features & NETIF_F_NTUPLE) {
8514                 /* Enable filters and mark for reset */
8515                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8516                         need_reset = true;
8517                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8518         } else {
8519                 /* turn off filters, mark for reset and clear SW filter list */
8520                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8521                         need_reset = true;
8522                         i40e_fdir_filter_exit(pf);
8523                 }
8524                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8525                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8526                 /* reset fd counters */
8527                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8528                 pf->fdir_pf_active_filters = 0;
8529                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8530                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8531                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8532                 /* if ATR was auto disabled it can be re-enabled. */
8533                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8534                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8535                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8536         }
8537         return need_reset;
8538 }
8539
8540 /**
8541  * i40e_set_features - set the netdev feature flags
8542  * @netdev: ptr to the netdev being adjusted
8543  * @features: the feature set that the stack is suggesting
8544  **/
8545 static int i40e_set_features(struct net_device *netdev,
8546                              netdev_features_t features)
8547 {
8548         struct i40e_netdev_priv *np = netdev_priv(netdev);
8549         struct i40e_vsi *vsi = np->vsi;
8550         struct i40e_pf *pf = vsi->back;
8551         bool need_reset;
8552
8553         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8554                 i40e_vlan_stripping_enable(vsi);
8555         else
8556                 i40e_vlan_stripping_disable(vsi);
8557
8558         need_reset = i40e_set_ntuple(pf, features);
8559
8560         if (need_reset)
8561                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8562
8563         return 0;
8564 }
8565
8566 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
8567 /**
8568  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8569  * @pf: board private structure
8570  * @port: The UDP port to look up
8571  *
8572  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8573  **/
8574 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8575 {
8576         u8 i;
8577
8578         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8579                 if (pf->udp_ports[i].index == port)
8580                         return i;
8581         }
8582
8583         return i;
8584 }
8585
8586 #endif
8587
8588 #if IS_ENABLED(CONFIG_VXLAN)
8589 /**
8590  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8591  * @netdev: This physical port's netdev
8592  * @sa_family: Socket Family that VXLAN is notifying us about
8593  * @port: New UDP port number that VXLAN started listening to
8594  **/
8595 static void i40e_add_vxlan_port(struct net_device *netdev,
8596                                 sa_family_t sa_family, __be16 port)
8597 {
8598         struct i40e_netdev_priv *np = netdev_priv(netdev);
8599         struct i40e_vsi *vsi = np->vsi;
8600         struct i40e_pf *pf = vsi->back;
8601         u8 next_idx;
8602         u8 idx;
8603
8604         if (sa_family == AF_INET6)
8605                 return;
8606
8607         idx = i40e_get_udp_port_idx(pf, port);
8608
8609         /* Check if port already exists */
8610         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8611                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8612                             ntohs(port));
8613                 return;
8614         }
8615
8616         /* Now check if there is space to add the new port */
8617         next_idx = i40e_get_udp_port_idx(pf, 0);
8618
8619         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8620                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8621                             ntohs(port));
8622                 return;
8623         }
8624
8625         /* New port: add it and mark its index in the bitmap */
8626         pf->udp_ports[next_idx].index = port;
8627         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8628         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8629         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8630 }
8631
8632 /**
8633  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8634  * @netdev: This physical port's netdev
8635  * @sa_family: Socket Family that VXLAN is notifying us about
8636  * @port: UDP port number that VXLAN stopped listening to
8637  **/
8638 static void i40e_del_vxlan_port(struct net_device *netdev,
8639                                 sa_family_t sa_family, __be16 port)
8640 {
8641         struct i40e_netdev_priv *np = netdev_priv(netdev);
8642         struct i40e_vsi *vsi = np->vsi;
8643         struct i40e_pf *pf = vsi->back;
8644         u8 idx;
8645
8646         if (sa_family == AF_INET6)
8647                 return;
8648
8649         idx = i40e_get_udp_port_idx(pf, port);
8650
8651         /* Check if port already exists */
8652         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8653                 /* if port exists, set it to 0 (mark for deletion)
8654                  * and make it pending
8655                  */
8656                 pf->udp_ports[idx].index = 0;
8657                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8658                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8659         } else {
8660                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8661                             ntohs(port));
8662         }
8663 }
8664 #endif
8665
8666 #if IS_ENABLED(CONFIG_GENEVE)
8667 /**
8668  * i40e_add_geneve_port - Get notifications about GENEVE ports that come up
8669  * @netdev: This physical port's netdev
8670  * @sa_family: Socket Family that GENEVE is notifying us about
8671  * @port: New UDP port number that GENEVE started listening to
8672  **/
8673 static void i40e_add_geneve_port(struct net_device *netdev,
8674                                  sa_family_t sa_family, __be16 port)
8675 {
8676         struct i40e_netdev_priv *np = netdev_priv(netdev);
8677         struct i40e_vsi *vsi = np->vsi;
8678         struct i40e_pf *pf = vsi->back;
8679         u8 next_idx;
8680         u8 idx;
8681
8682         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8683                 return;
8684
8685         if (sa_family == AF_INET6)
8686                 return;
8687
8688         idx = i40e_get_udp_port_idx(pf, port);
8689
8690         /* Check if port already exists */
8691         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8692                 netdev_info(netdev, "udp port %d already offloaded\n",
8693                             ntohs(port));
8694                 return;
8695         }
8696
8697         /* Now check if there is space to add the new port */
8698         next_idx = i40e_get_udp_port_idx(pf, 0);
8699
8700         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8701                 netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
8702                             ntohs(port));
8703                 return;
8704         }
8705
8706         /* New port: add it and mark its index in the bitmap */
8707         pf->udp_ports[next_idx].index = port;
8708         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8709         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8710         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8711
8712         dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
8713 }
8714
8715 /**
8716  * i40e_del_geneve_port - Get notifications about GENEVE ports that go away
8717  * @netdev: This physical port's netdev
8718  * @sa_family: Socket Family that GENEVE is notifying us about
8719  * @port: UDP port number that GENEVE stopped listening to
8720  **/
8721 static void i40e_del_geneve_port(struct net_device *netdev,
8722                                  sa_family_t sa_family, __be16 port)
8723 {
8724         struct i40e_netdev_priv *np = netdev_priv(netdev);
8725         struct i40e_vsi *vsi = np->vsi;
8726         struct i40e_pf *pf = vsi->back;
8727         u8 idx;
8728
8729         if (sa_family == AF_INET6)
8730                 return;
8731
8732         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8733                 return;
8734
8735         idx = i40e_get_udp_port_idx(pf, port);
8736
8737         /* Check if port already exists */
8738         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8739                 /* if port exists, set it to 0 (mark for deletion)
8740                  * and make it pending
8741                  */
8742                 pf->udp_ports[idx].index = 0;
8743                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8744                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8745
8746                 dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
8747                          ntohs(port));
8748         } else {
8749                 netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
8750                             ntohs(port));
8751         }
8752 }
8753 #endif
8754
8755 static int i40e_get_phys_port_id(struct net_device *netdev,
8756                                  struct netdev_phys_item_id *ppid)
8757 {
8758         struct i40e_netdev_priv *np = netdev_priv(netdev);
8759         struct i40e_pf *pf = np->vsi->back;
8760         struct i40e_hw *hw = &pf->hw;
8761
8762         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8763                 return -EOPNOTSUPP;
8764
8765         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8766         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8767
8768         return 0;
8769 }
8770
8771 /**
8772  * i40e_ndo_fdb_add - add an entry to the hardware database
8773  * @ndm: the input from the stack
8774  * @tb: pointer to array of nladdr (unused)
8775  * @dev: the net device pointer
8776  * @addr: the MAC address entry being added
8777  * @flags: instructions from stack about fdb operation
8778  */
8779 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8780                             struct net_device *dev,
8781                             const unsigned char *addr, u16 vid,
8782                             u16 flags)
8783 {
8784         struct i40e_netdev_priv *np = netdev_priv(dev);
8785         struct i40e_pf *pf = np->vsi->back;
8786         int err = 0;
8787
8788         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8789                 return -EOPNOTSUPP;
8790
8791         if (vid) {
8792                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8793                 return -EINVAL;
8794         }
8795
8796         /* Hardware does not support aging addresses so if a
8797          * ndm_state is given only allow permanent addresses
8798          */
8799         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8800                 netdev_info(dev, "FDB only supports static addresses\n");
8801                 return -EINVAL;
8802         }
8803
8804         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8805                 err = dev_uc_add_excl(dev, addr);
8806         else if (is_multicast_ether_addr(addr))
8807                 err = dev_mc_add_excl(dev, addr);
8808         else
8809                 err = -EINVAL;
8810
8811         /* Only return duplicate errors if NLM_F_EXCL is set */
8812         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8813                 err = 0;
8814
8815         return err;
8816 }
8817
8818 /**
8819  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8820  * @dev: the netdev being configured
8821  * @nlh: RTNL message
8822  *
8823  * Inserts a new hardware bridge if not already created and
8824  * enables the bridging mode requested (VEB or VEPA). If the
8825  * hardware bridge has already been inserted and the request
8826  * is to change the mode then that requires a PF reset to
8827  * allow rebuild of the components with required hardware
8828  * bridge mode enabled.
8829  **/
8830 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8831                                    struct nlmsghdr *nlh,
8832                                    u16 flags)
8833 {
8834         struct i40e_netdev_priv *np = netdev_priv(dev);
8835         struct i40e_vsi *vsi = np->vsi;
8836         struct i40e_pf *pf = vsi->back;
8837         struct i40e_veb *veb = NULL;
8838         struct nlattr *attr, *br_spec;
8839         int i, rem;
8840
8841         /* Only for PF VSI for now */
8842         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8843                 return -EOPNOTSUPP;
8844
8845         /* Find the HW bridge for PF VSI */
8846         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8847                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8848                         veb = pf->veb[i];
8849         }
8850
8851         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8852
8853         nla_for_each_nested(attr, br_spec, rem) {
8854                 __u16 mode;
8855
8856                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8857                         continue;
8858
8859                 mode = nla_get_u16(attr);
8860                 if ((mode != BRIDGE_MODE_VEPA) &&
8861                     (mode != BRIDGE_MODE_VEB))
8862                         return -EINVAL;
8863
8864                 /* Insert a new HW bridge */
8865                 if (!veb) {
8866                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8867                                              vsi->tc_config.enabled_tc);
8868                         if (veb) {
8869                                 veb->bridge_mode = mode;
8870                                 i40e_config_bridge_mode(veb);
8871                         } else {
8872                                 /* No Bridge HW offload available */
8873                                 return -ENOENT;
8874                         }
8875                         break;
8876                 } else if (mode != veb->bridge_mode) {
8877                         /* Existing HW bridge but different mode needs reset */
8878                         veb->bridge_mode = mode;
8879                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8880                         if (mode == BRIDGE_MODE_VEB)
8881                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8882                         else
8883                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8884                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8885                         break;
8886                 }
8887         }
8888
8889         return 0;
8890 }
8891
8892 /**
8893  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8894  * @skb: skb buff
8895  * @pid: process id
8896  * @seq: RTNL message seq #
8897  * @dev: the netdev being configured
8898  * @filter_mask: unused
8899  * @nlflags: netlink flags passed in
8900  *
8901  * Return the mode in which the hardware bridge is operating in
8902  * i.e VEB or VEPA.
8903  **/
8904 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8905                                    struct net_device *dev,
8906                                    u32 __always_unused filter_mask,
8907                                    int nlflags)
8908 {
8909         struct i40e_netdev_priv *np = netdev_priv(dev);
8910         struct i40e_vsi *vsi = np->vsi;
8911         struct i40e_pf *pf = vsi->back;
8912         struct i40e_veb *veb = NULL;
8913         int i;
8914
8915         /* Only for PF VSI for now */
8916         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8917                 return -EOPNOTSUPP;
8918
8919         /* Find the HW bridge for the PF VSI */
8920         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8921                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8922                         veb = pf->veb[i];
8923         }
8924
8925         if (!veb)
8926                 return 0;
8927
8928         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8929                                        nlflags, 0, 0, filter_mask, NULL);
8930 }
8931
8932 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8933  * inner mac plus all inner ethertypes.
8934  */
8935 #define I40E_MAX_TUNNEL_HDR_LEN 128
8936 /**
8937  * i40e_features_check - Validate encapsulated packet conforms to limits
8938  * @skb: skb buff
8939  * @dev: This physical port's netdev
8940  * @features: Offload features that the stack believes apply
8941  **/
8942 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8943                                              struct net_device *dev,
8944                                              netdev_features_t features)
8945 {
8946         if (skb->encapsulation &&
8947             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
8948              I40E_MAX_TUNNEL_HDR_LEN))
8949                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8950
8951         return features;
8952 }
8953
8954 static const struct net_device_ops i40e_netdev_ops = {
8955         .ndo_open               = i40e_open,
8956         .ndo_stop               = i40e_close,
8957         .ndo_start_xmit         = i40e_lan_xmit_frame,
8958         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8959         .ndo_set_rx_mode        = i40e_set_rx_mode,
8960         .ndo_validate_addr      = eth_validate_addr,
8961         .ndo_set_mac_address    = i40e_set_mac,
8962         .ndo_change_mtu         = i40e_change_mtu,
8963         .ndo_do_ioctl           = i40e_ioctl,
8964         .ndo_tx_timeout         = i40e_tx_timeout,
8965         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8966         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8967 #ifdef CONFIG_NET_POLL_CONTROLLER
8968         .ndo_poll_controller    = i40e_netpoll,
8969 #endif
8970         .ndo_setup_tc           = __i40e_setup_tc,
8971 #ifdef I40E_FCOE
8972         .ndo_fcoe_enable        = i40e_fcoe_enable,
8973         .ndo_fcoe_disable       = i40e_fcoe_disable,
8974 #endif
8975         .ndo_set_features       = i40e_set_features,
8976         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8977         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8978         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8979         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8980         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8981         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8982 #if IS_ENABLED(CONFIG_VXLAN)
8983         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8984         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8985 #endif
8986 #if IS_ENABLED(CONFIG_GENEVE)
8987         .ndo_add_geneve_port    = i40e_add_geneve_port,
8988         .ndo_del_geneve_port    = i40e_del_geneve_port,
8989 #endif
8990         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8991         .ndo_fdb_add            = i40e_ndo_fdb_add,
8992         .ndo_features_check     = i40e_features_check,
8993         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8994         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8995 };
8996
8997 /**
8998  * i40e_config_netdev - Setup the netdev flags
8999  * @vsi: the VSI being configured
9000  *
9001  * Returns 0 on success, negative value on failure
9002  **/
9003 static int i40e_config_netdev(struct i40e_vsi *vsi)
9004 {
9005         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
9006         struct i40e_pf *pf = vsi->back;
9007         struct i40e_hw *hw = &pf->hw;
9008         struct i40e_netdev_priv *np;
9009         struct net_device *netdev;
9010         u8 mac_addr[ETH_ALEN];
9011         int etherdev_size;
9012
9013         etherdev_size = sizeof(struct i40e_netdev_priv);
9014         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9015         if (!netdev)
9016                 return -ENOMEM;
9017
9018         vsi->netdev = netdev;
9019         np = netdev_priv(netdev);
9020         np->vsi = vsi;
9021
9022         netdev->hw_enc_features |= NETIF_F_IP_CSUM        |
9023                                    NETIF_F_GSO_UDP_TUNNEL |
9024                                    NETIF_F_GSO_GRE        |
9025                                    NETIF_F_TSO            |
9026                                    0;
9027
9028         netdev->features = NETIF_F_SG                  |
9029                            NETIF_F_IP_CSUM             |
9030                            NETIF_F_SCTP_CRC            |
9031                            NETIF_F_HIGHDMA             |
9032                            NETIF_F_GSO_UDP_TUNNEL      |
9033                            NETIF_F_GSO_GRE             |
9034                            NETIF_F_HW_VLAN_CTAG_TX     |
9035                            NETIF_F_HW_VLAN_CTAG_RX     |
9036                            NETIF_F_HW_VLAN_CTAG_FILTER |
9037                            NETIF_F_IPV6_CSUM           |
9038                            NETIF_F_TSO                 |
9039                            NETIF_F_TSO_ECN             |
9040                            NETIF_F_TSO6                |
9041                            NETIF_F_RXCSUM              |
9042                            NETIF_F_RXHASH              |
9043                            0;
9044
9045         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9046                 netdev->features |= NETIF_F_NTUPLE;
9047
9048         /* copy netdev features into list of user selectable features */
9049         netdev->hw_features |= netdev->features;
9050
9051         if (vsi->type == I40E_VSI_MAIN) {
9052                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9053                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9054                 /* The following steps are necessary to prevent reception
9055                  * of tagged packets - some older NVM configurations load a
9056                  * default a MAC-VLAN filter that accepts any tagged packet
9057                  * which must be replaced by a normal filter.
9058                  */
9059                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9060                         spin_lock_bh(&vsi->mac_filter_list_lock);
9061                         i40e_add_filter(vsi, mac_addr,
9062                                         I40E_VLAN_ANY, false, true);
9063                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9064                 }
9065         } else {
9066                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9067                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9068                          pf->vsi[pf->lan_vsi]->netdev->name);
9069                 random_ether_addr(mac_addr);
9070
9071                 spin_lock_bh(&vsi->mac_filter_list_lock);
9072                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9073                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9074         }
9075
9076         spin_lock_bh(&vsi->mac_filter_list_lock);
9077         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9078         spin_unlock_bh(&vsi->mac_filter_list_lock);
9079
9080         ether_addr_copy(netdev->dev_addr, mac_addr);
9081         ether_addr_copy(netdev->perm_addr, mac_addr);
9082         /* vlan gets same features (except vlan offload)
9083          * after any tweaks for specific VSI types
9084          */
9085         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
9086                                                      NETIF_F_HW_VLAN_CTAG_RX |
9087                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
9088         netdev->priv_flags |= IFF_UNICAST_FLT;
9089         netdev->priv_flags |= IFF_SUPP_NOFCS;
9090         /* Setup netdev TC information */
9091         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9092
9093         netdev->netdev_ops = &i40e_netdev_ops;
9094         netdev->watchdog_timeo = 5 * HZ;
9095         i40e_set_ethtool_ops(netdev);
9096 #ifdef I40E_FCOE
9097         i40e_fcoe_config_netdev(netdev, vsi);
9098 #endif
9099
9100         return 0;
9101 }
9102
9103 /**
9104  * i40e_vsi_delete - Delete a VSI from the switch
9105  * @vsi: the VSI being removed
9106  *
9107  * Returns 0 on success, negative value on failure
9108  **/
9109 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9110 {
9111         /* remove default VSI is not allowed */
9112         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9113                 return;
9114
9115         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9116 }
9117
9118 /**
9119  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9120  * @vsi: the VSI being queried
9121  *
9122  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9123  **/
9124 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9125 {
9126         struct i40e_veb *veb;
9127         struct i40e_pf *pf = vsi->back;
9128
9129         /* Uplink is not a bridge so default to VEB */
9130         if (vsi->veb_idx == I40E_NO_VEB)
9131                 return 1;
9132
9133         veb = pf->veb[vsi->veb_idx];
9134         if (!veb) {
9135                 dev_info(&pf->pdev->dev,
9136                          "There is no veb associated with the bridge\n");
9137                 return -ENOENT;
9138         }
9139
9140         /* Uplink is a bridge in VEPA mode */
9141         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9142                 return 0;
9143         } else {
9144                 /* Uplink is a bridge in VEB mode */
9145                 return 1;
9146         }
9147
9148         /* VEPA is now default bridge, so return 0 */
9149         return 0;
9150 }
9151
9152 /**
9153  * i40e_add_vsi - Add a VSI to the switch
9154  * @vsi: the VSI being configured
9155  *
9156  * This initializes a VSI context depending on the VSI type to be added and
9157  * passes it down to the add_vsi aq command.
9158  **/
9159 static int i40e_add_vsi(struct i40e_vsi *vsi)
9160 {
9161         int ret = -ENODEV;
9162         u8 laa_macaddr[ETH_ALEN];
9163         bool found_laa_mac_filter = false;
9164         struct i40e_pf *pf = vsi->back;
9165         struct i40e_hw *hw = &pf->hw;
9166         struct i40e_vsi_context ctxt;
9167         struct i40e_mac_filter *f, *ftmp;
9168
9169         u8 enabled_tc = 0x1; /* TC0 enabled */
9170         int f_count = 0;
9171
9172         memset(&ctxt, 0, sizeof(ctxt));
9173         switch (vsi->type) {
9174         case I40E_VSI_MAIN:
9175                 /* The PF's main VSI is already setup as part of the
9176                  * device initialization, so we'll not bother with
9177                  * the add_vsi call, but we will retrieve the current
9178                  * VSI context.
9179                  */
9180                 ctxt.seid = pf->main_vsi_seid;
9181                 ctxt.pf_num = pf->hw.pf_id;
9182                 ctxt.vf_num = 0;
9183                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9184                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9185                 if (ret) {
9186                         dev_info(&pf->pdev->dev,
9187                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9188                                  i40e_stat_str(&pf->hw, ret),
9189                                  i40e_aq_str(&pf->hw,
9190                                              pf->hw.aq.asq_last_status));
9191                         return -ENOENT;
9192                 }
9193                 vsi->info = ctxt.info;
9194                 vsi->info.valid_sections = 0;
9195
9196                 vsi->seid = ctxt.seid;
9197                 vsi->id = ctxt.vsi_number;
9198
9199                 enabled_tc = i40e_pf_get_tc_map(pf);
9200
9201                 /* MFP mode setup queue map and update VSI */
9202                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9203                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9204                         memset(&ctxt, 0, sizeof(ctxt));
9205                         ctxt.seid = pf->main_vsi_seid;
9206                         ctxt.pf_num = pf->hw.pf_id;
9207                         ctxt.vf_num = 0;
9208                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9209                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9210                         if (ret) {
9211                                 dev_info(&pf->pdev->dev,
9212                                          "update vsi failed, err %s aq_err %s\n",
9213                                          i40e_stat_str(&pf->hw, ret),
9214                                          i40e_aq_str(&pf->hw,
9215                                                     pf->hw.aq.asq_last_status));
9216                                 ret = -ENOENT;
9217                                 goto err;
9218                         }
9219                         /* update the local VSI info queue map */
9220                         i40e_vsi_update_queue_map(vsi, &ctxt);
9221                         vsi->info.valid_sections = 0;
9222                 } else {
9223                         /* Default/Main VSI is only enabled for TC0
9224                          * reconfigure it to enable all TCs that are
9225                          * available on the port in SFP mode.
9226                          * For MFP case the iSCSI PF would use this
9227                          * flow to enable LAN+iSCSI TC.
9228                          */
9229                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9230                         if (ret) {
9231                                 dev_info(&pf->pdev->dev,
9232                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9233                                          enabled_tc,
9234                                          i40e_stat_str(&pf->hw, ret),
9235                                          i40e_aq_str(&pf->hw,
9236                                                     pf->hw.aq.asq_last_status));
9237                                 ret = -ENOENT;
9238                         }
9239                 }
9240                 break;
9241
9242         case I40E_VSI_FDIR:
9243                 ctxt.pf_num = hw->pf_id;
9244                 ctxt.vf_num = 0;
9245                 ctxt.uplink_seid = vsi->uplink_seid;
9246                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9247                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9248                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9249                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9250                         ctxt.info.valid_sections |=
9251                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9252                         ctxt.info.switch_id =
9253                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9254                 }
9255                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9256                 break;
9257
9258         case I40E_VSI_VMDQ2:
9259                 ctxt.pf_num = hw->pf_id;
9260                 ctxt.vf_num = 0;
9261                 ctxt.uplink_seid = vsi->uplink_seid;
9262                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9263                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9264
9265                 /* This VSI is connected to VEB so the switch_id
9266                  * should be set to zero by default.
9267                  */
9268                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9269                         ctxt.info.valid_sections |=
9270                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9271                         ctxt.info.switch_id =
9272                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9273                 }
9274
9275                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9276                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9277                 break;
9278
9279         case I40E_VSI_SRIOV:
9280                 ctxt.pf_num = hw->pf_id;
9281                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9282                 ctxt.uplink_seid = vsi->uplink_seid;
9283                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9284                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9285
9286                 /* This VSI is connected to VEB so the switch_id
9287                  * should be set to zero by default.
9288                  */
9289                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9290                         ctxt.info.valid_sections |=
9291                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9292                         ctxt.info.switch_id =
9293                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9294                 }
9295
9296                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9297                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9298                 if (pf->vf[vsi->vf_id].spoofchk) {
9299                         ctxt.info.valid_sections |=
9300                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9301                         ctxt.info.sec_flags |=
9302                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9303                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9304                 }
9305                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9306                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9307                 break;
9308
9309 #ifdef I40E_FCOE
9310         case I40E_VSI_FCOE:
9311                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9312                 if (ret) {
9313                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9314                         return ret;
9315                 }
9316                 break;
9317
9318 #endif /* I40E_FCOE */
9319         default:
9320                 return -ENODEV;
9321         }
9322
9323         if (vsi->type != I40E_VSI_MAIN) {
9324                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9325                 if (ret) {
9326                         dev_info(&vsi->back->pdev->dev,
9327                                  "add vsi failed, err %s aq_err %s\n",
9328                                  i40e_stat_str(&pf->hw, ret),
9329                                  i40e_aq_str(&pf->hw,
9330                                              pf->hw.aq.asq_last_status));
9331                         ret = -ENOENT;
9332                         goto err;
9333                 }
9334                 vsi->info = ctxt.info;
9335                 vsi->info.valid_sections = 0;
9336                 vsi->seid = ctxt.seid;
9337                 vsi->id = ctxt.vsi_number;
9338         }
9339
9340         spin_lock_bh(&vsi->mac_filter_list_lock);
9341         /* If macvlan filters already exist, force them to get loaded */
9342         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9343                 f->changed = true;
9344                 f_count++;
9345
9346                 /* Expected to have only one MAC filter entry for LAA in list */
9347                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9348                         ether_addr_copy(laa_macaddr, f->macaddr);
9349                         found_laa_mac_filter = true;
9350                 }
9351         }
9352         spin_unlock_bh(&vsi->mac_filter_list_lock);
9353
9354         if (found_laa_mac_filter) {
9355                 struct i40e_aqc_remove_macvlan_element_data element;
9356
9357                 memset(&element, 0, sizeof(element));
9358                 ether_addr_copy(element.mac_addr, laa_macaddr);
9359                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9360                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9361                                              &element, 1, NULL);
9362                 if (ret) {
9363                         /* some older FW has a different default */
9364                         element.flags |=
9365                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9366                         i40e_aq_remove_macvlan(hw, vsi->seid,
9367                                                &element, 1, NULL);
9368                 }
9369
9370                 i40e_aq_mac_address_write(hw,
9371                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9372                                           laa_macaddr, NULL);
9373         }
9374
9375         if (f_count) {
9376                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9377                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9378         }
9379
9380         /* Update VSI BW information */
9381         ret = i40e_vsi_get_bw_info(vsi);
9382         if (ret) {
9383                 dev_info(&pf->pdev->dev,
9384                          "couldn't get vsi bw info, err %s aq_err %s\n",
9385                          i40e_stat_str(&pf->hw, ret),
9386                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9387                 /* VSI is already added so not tearing that up */
9388                 ret = 0;
9389         }
9390
9391 err:
9392         return ret;
9393 }
9394
9395 /**
9396  * i40e_vsi_release - Delete a VSI and free its resources
9397  * @vsi: the VSI being removed
9398  *
9399  * Returns 0 on success or < 0 on error
9400  **/
9401 int i40e_vsi_release(struct i40e_vsi *vsi)
9402 {
9403         struct i40e_mac_filter *f, *ftmp;
9404         struct i40e_veb *veb = NULL;
9405         struct i40e_pf *pf;
9406         u16 uplink_seid;
9407         int i, n;
9408
9409         pf = vsi->back;
9410
9411         /* release of a VEB-owner or last VSI is not allowed */
9412         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9413                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9414                          vsi->seid, vsi->uplink_seid);
9415                 return -ENODEV;
9416         }
9417         if (vsi == pf->vsi[pf->lan_vsi] &&
9418             !test_bit(__I40E_DOWN, &pf->state)) {
9419                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9420                 return -ENODEV;
9421         }
9422
9423         uplink_seid = vsi->uplink_seid;
9424         if (vsi->type != I40E_VSI_SRIOV) {
9425                 if (vsi->netdev_registered) {
9426                         vsi->netdev_registered = false;
9427                         if (vsi->netdev) {
9428                                 /* results in a call to i40e_close() */
9429                                 unregister_netdev(vsi->netdev);
9430                         }
9431                 } else {
9432                         i40e_vsi_close(vsi);
9433                 }
9434                 i40e_vsi_disable_irq(vsi);
9435         }
9436
9437         spin_lock_bh(&vsi->mac_filter_list_lock);
9438         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9439                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9440                                 f->is_vf, f->is_netdev);
9441         spin_unlock_bh(&vsi->mac_filter_list_lock);
9442
9443         i40e_sync_vsi_filters(vsi);
9444
9445         i40e_vsi_delete(vsi);
9446         i40e_vsi_free_q_vectors(vsi);
9447         if (vsi->netdev) {
9448                 free_netdev(vsi->netdev);
9449                 vsi->netdev = NULL;
9450         }
9451         i40e_vsi_clear_rings(vsi);
9452         i40e_vsi_clear(vsi);
9453
9454         /* If this was the last thing on the VEB, except for the
9455          * controlling VSI, remove the VEB, which puts the controlling
9456          * VSI onto the next level down in the switch.
9457          *
9458          * Well, okay, there's one more exception here: don't remove
9459          * the orphan VEBs yet.  We'll wait for an explicit remove request
9460          * from up the network stack.
9461          */
9462         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9463                 if (pf->vsi[i] &&
9464                     pf->vsi[i]->uplink_seid == uplink_seid &&
9465                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9466                         n++;      /* count the VSIs */
9467                 }
9468         }
9469         for (i = 0; i < I40E_MAX_VEB; i++) {
9470                 if (!pf->veb[i])
9471                         continue;
9472                 if (pf->veb[i]->uplink_seid == uplink_seid)
9473                         n++;     /* count the VEBs */
9474                 if (pf->veb[i]->seid == uplink_seid)
9475                         veb = pf->veb[i];
9476         }
9477         if (n == 0 && veb && veb->uplink_seid != 0)
9478                 i40e_veb_release(veb);
9479
9480         return 0;
9481 }
9482
9483 /**
9484  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9485  * @vsi: ptr to the VSI
9486  *
9487  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9488  * corresponding SW VSI structure and initializes num_queue_pairs for the
9489  * newly allocated VSI.
9490  *
9491  * Returns 0 on success or negative on failure
9492  **/
9493 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9494 {
9495         int ret = -ENOENT;
9496         struct i40e_pf *pf = vsi->back;
9497
9498         if (vsi->q_vectors[0]) {
9499                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9500                          vsi->seid);
9501                 return -EEXIST;
9502         }
9503
9504         if (vsi->base_vector) {
9505                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9506                          vsi->seid, vsi->base_vector);
9507                 return -EEXIST;
9508         }
9509
9510         ret = i40e_vsi_alloc_q_vectors(vsi);
9511         if (ret) {
9512                 dev_info(&pf->pdev->dev,
9513                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9514                          vsi->num_q_vectors, vsi->seid, ret);
9515                 vsi->num_q_vectors = 0;
9516                 goto vector_setup_out;
9517         }
9518
9519         /* In Legacy mode, we do not have to get any other vector since we
9520          * piggyback on the misc/ICR0 for queue interrupts.
9521         */
9522         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9523                 return ret;
9524         if (vsi->num_q_vectors)
9525                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9526                                                  vsi->num_q_vectors, vsi->idx);
9527         if (vsi->base_vector < 0) {
9528                 dev_info(&pf->pdev->dev,
9529                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9530                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9531                 i40e_vsi_free_q_vectors(vsi);
9532                 ret = -ENOENT;
9533                 goto vector_setup_out;
9534         }
9535
9536 vector_setup_out:
9537         return ret;
9538 }
9539
9540 /**
9541  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9542  * @vsi: pointer to the vsi.
9543  *
9544  * This re-allocates a vsi's queue resources.
9545  *
9546  * Returns pointer to the successfully allocated and configured VSI sw struct
9547  * on success, otherwise returns NULL on failure.
9548  **/
9549 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9550 {
9551         struct i40e_pf *pf = vsi->back;
9552         u8 enabled_tc;
9553         int ret;
9554
9555         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9556         i40e_vsi_clear_rings(vsi);
9557
9558         i40e_vsi_free_arrays(vsi, false);
9559         i40e_set_num_rings_in_vsi(vsi);
9560         ret = i40e_vsi_alloc_arrays(vsi, false);
9561         if (ret)
9562                 goto err_vsi;
9563
9564         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9565         if (ret < 0) {
9566                 dev_info(&pf->pdev->dev,
9567                          "failed to get tracking for %d queues for VSI %d err %d\n",
9568                          vsi->alloc_queue_pairs, vsi->seid, ret);
9569                 goto err_vsi;
9570         }
9571         vsi->base_queue = ret;
9572
9573         /* Update the FW view of the VSI. Force a reset of TC and queue
9574          * layout configurations.
9575          */
9576         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9577         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9578         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9579         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9580
9581         /* assign it some queues */
9582         ret = i40e_alloc_rings(vsi);
9583         if (ret)
9584                 goto err_rings;
9585
9586         /* map all of the rings to the q_vectors */
9587         i40e_vsi_map_rings_to_vectors(vsi);
9588         return vsi;
9589
9590 err_rings:
9591         i40e_vsi_free_q_vectors(vsi);
9592         if (vsi->netdev_registered) {
9593                 vsi->netdev_registered = false;
9594                 unregister_netdev(vsi->netdev);
9595                 free_netdev(vsi->netdev);
9596                 vsi->netdev = NULL;
9597         }
9598         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9599 err_vsi:
9600         i40e_vsi_clear(vsi);
9601         return NULL;
9602 }
9603
9604 /**
9605  * i40e_macaddr_init - explicitly write the mac address filters.
9606  *
9607  * @vsi: pointer to the vsi.
9608  * @macaddr: the MAC address
9609  *
9610  * This is needed when the macaddr has been obtained by other
9611  * means than the default, e.g., from Open Firmware or IDPROM.
9612  * Returns 0 on success, negative on failure
9613  **/
9614 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9615 {
9616         int ret;
9617         struct i40e_aqc_add_macvlan_element_data element;
9618
9619         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9620                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9621                                         macaddr, NULL);
9622         if (ret) {
9623                 dev_info(&vsi->back->pdev->dev,
9624                          "Addr change for VSI failed: %d\n", ret);
9625                 return -EADDRNOTAVAIL;
9626         }
9627
9628         memset(&element, 0, sizeof(element));
9629         ether_addr_copy(element.mac_addr, macaddr);
9630         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9631         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9632         if (ret) {
9633                 dev_info(&vsi->back->pdev->dev,
9634                          "add filter failed err %s aq_err %s\n",
9635                          i40e_stat_str(&vsi->back->hw, ret),
9636                          i40e_aq_str(&vsi->back->hw,
9637                                      vsi->back->hw.aq.asq_last_status));
9638         }
9639         return ret;
9640 }
9641
9642 /**
9643  * i40e_vsi_setup - Set up a VSI by a given type
9644  * @pf: board private structure
9645  * @type: VSI type
9646  * @uplink_seid: the switch element to link to
9647  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9648  *
9649  * This allocates the sw VSI structure and its queue resources, then add a VSI
9650  * to the identified VEB.
9651  *
9652  * Returns pointer to the successfully allocated and configure VSI sw struct on
9653  * success, otherwise returns NULL on failure.
9654  **/
9655 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9656                                 u16 uplink_seid, u32 param1)
9657 {
9658         struct i40e_vsi *vsi = NULL;
9659         struct i40e_veb *veb = NULL;
9660         int ret, i;
9661         int v_idx;
9662
9663         /* The requested uplink_seid must be either
9664          *     - the PF's port seid
9665          *              no VEB is needed because this is the PF
9666          *              or this is a Flow Director special case VSI
9667          *     - seid of an existing VEB
9668          *     - seid of a VSI that owns an existing VEB
9669          *     - seid of a VSI that doesn't own a VEB
9670          *              a new VEB is created and the VSI becomes the owner
9671          *     - seid of the PF VSI, which is what creates the first VEB
9672          *              this is a special case of the previous
9673          *
9674          * Find which uplink_seid we were given and create a new VEB if needed
9675          */
9676         for (i = 0; i < I40E_MAX_VEB; i++) {
9677                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9678                         veb = pf->veb[i];
9679                         break;
9680                 }
9681         }
9682
9683         if (!veb && uplink_seid != pf->mac_seid) {
9684
9685                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9686                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9687                                 vsi = pf->vsi[i];
9688                                 break;
9689                         }
9690                 }
9691                 if (!vsi) {
9692                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9693                                  uplink_seid);
9694                         return NULL;
9695                 }
9696
9697                 if (vsi->uplink_seid == pf->mac_seid)
9698                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9699                                              vsi->tc_config.enabled_tc);
9700                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9701                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9702                                              vsi->tc_config.enabled_tc);
9703                 if (veb) {
9704                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9705                                 dev_info(&vsi->back->pdev->dev,
9706                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9707                                 return NULL;
9708                         }
9709                         /* We come up by default in VEPA mode if SRIOV is not
9710                          * already enabled, in which case we can't force VEPA
9711                          * mode.
9712                          */
9713                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9714                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9715                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9716                         }
9717                         i40e_config_bridge_mode(veb);
9718                 }
9719                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9720                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9721                                 veb = pf->veb[i];
9722                 }
9723                 if (!veb) {
9724                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9725                         return NULL;
9726                 }
9727
9728                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9729                 uplink_seid = veb->seid;
9730         }
9731
9732         /* get vsi sw struct */
9733         v_idx = i40e_vsi_mem_alloc(pf, type);
9734         if (v_idx < 0)
9735                 goto err_alloc;
9736         vsi = pf->vsi[v_idx];
9737         if (!vsi)
9738                 goto err_alloc;
9739         vsi->type = type;
9740         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9741
9742         if (type == I40E_VSI_MAIN)
9743                 pf->lan_vsi = v_idx;
9744         else if (type == I40E_VSI_SRIOV)
9745                 vsi->vf_id = param1;
9746         /* assign it some queues */
9747         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9748                                 vsi->idx);
9749         if (ret < 0) {
9750                 dev_info(&pf->pdev->dev,
9751                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9752                          vsi->alloc_queue_pairs, vsi->seid, ret);
9753                 goto err_vsi;
9754         }
9755         vsi->base_queue = ret;
9756
9757         /* get a VSI from the hardware */
9758         vsi->uplink_seid = uplink_seid;
9759         ret = i40e_add_vsi(vsi);
9760         if (ret)
9761                 goto err_vsi;
9762
9763         switch (vsi->type) {
9764         /* setup the netdev if needed */
9765         case I40E_VSI_MAIN:
9766                 /* Apply relevant filters if a platform-specific mac
9767                  * address was selected.
9768                  */
9769                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9770                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9771                         if (ret) {
9772                                 dev_warn(&pf->pdev->dev,
9773                                          "could not set up macaddr; err %d\n",
9774                                          ret);
9775                         }
9776                 }
9777         case I40E_VSI_VMDQ2:
9778         case I40E_VSI_FCOE:
9779                 ret = i40e_config_netdev(vsi);
9780                 if (ret)
9781                         goto err_netdev;
9782                 ret = register_netdev(vsi->netdev);
9783                 if (ret)
9784                         goto err_netdev;
9785                 vsi->netdev_registered = true;
9786                 netif_carrier_off(vsi->netdev);
9787 #ifdef CONFIG_I40E_DCB
9788                 /* Setup DCB netlink interface */
9789                 i40e_dcbnl_setup(vsi);
9790 #endif /* CONFIG_I40E_DCB */
9791                 /* fall through */
9792
9793         case I40E_VSI_FDIR:
9794                 /* set up vectors and rings if needed */
9795                 ret = i40e_vsi_setup_vectors(vsi);
9796                 if (ret)
9797                         goto err_msix;
9798
9799                 ret = i40e_alloc_rings(vsi);
9800                 if (ret)
9801                         goto err_rings;
9802
9803                 /* map all of the rings to the q_vectors */
9804                 i40e_vsi_map_rings_to_vectors(vsi);
9805
9806                 i40e_vsi_reset_stats(vsi);
9807                 break;
9808
9809         default:
9810                 /* no netdev or rings for the other VSI types */
9811                 break;
9812         }
9813
9814         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9815             (vsi->type == I40E_VSI_VMDQ2)) {
9816                 ret = i40e_vsi_config_rss(vsi);
9817         }
9818         return vsi;
9819
9820 err_rings:
9821         i40e_vsi_free_q_vectors(vsi);
9822 err_msix:
9823         if (vsi->netdev_registered) {
9824                 vsi->netdev_registered = false;
9825                 unregister_netdev(vsi->netdev);
9826                 free_netdev(vsi->netdev);
9827                 vsi->netdev = NULL;
9828         }
9829 err_netdev:
9830         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9831 err_vsi:
9832         i40e_vsi_clear(vsi);
9833 err_alloc:
9834         return NULL;
9835 }
9836
9837 /**
9838  * i40e_veb_get_bw_info - Query VEB BW information
9839  * @veb: the veb to query
9840  *
9841  * Query the Tx scheduler BW configuration data for given VEB
9842  **/
9843 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9844 {
9845         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9846         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9847         struct i40e_pf *pf = veb->pf;
9848         struct i40e_hw *hw = &pf->hw;
9849         u32 tc_bw_max;
9850         int ret = 0;
9851         int i;
9852
9853         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9854                                                   &bw_data, NULL);
9855         if (ret) {
9856                 dev_info(&pf->pdev->dev,
9857                          "query veb bw config failed, err %s aq_err %s\n",
9858                          i40e_stat_str(&pf->hw, ret),
9859                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9860                 goto out;
9861         }
9862
9863         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9864                                                    &ets_data, NULL);
9865         if (ret) {
9866                 dev_info(&pf->pdev->dev,
9867                          "query veb bw ets config failed, err %s aq_err %s\n",
9868                          i40e_stat_str(&pf->hw, ret),
9869                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9870                 goto out;
9871         }
9872
9873         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9874         veb->bw_max_quanta = ets_data.tc_bw_max;
9875         veb->is_abs_credits = bw_data.absolute_credits_enable;
9876         veb->enabled_tc = ets_data.tc_valid_bits;
9877         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9878                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9879         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9880                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9881                 veb->bw_tc_limit_credits[i] =
9882                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9883                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9884         }
9885
9886 out:
9887         return ret;
9888 }
9889
9890 /**
9891  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9892  * @pf: board private structure
9893  *
9894  * On error: returns error code (negative)
9895  * On success: returns vsi index in PF (positive)
9896  **/
9897 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9898 {
9899         int ret = -ENOENT;
9900         struct i40e_veb *veb;
9901         int i;
9902
9903         /* Need to protect the allocation of switch elements at the PF level */
9904         mutex_lock(&pf->switch_mutex);
9905
9906         /* VEB list may be fragmented if VEB creation/destruction has
9907          * been happening.  We can afford to do a quick scan to look
9908          * for any free slots in the list.
9909          *
9910          * find next empty veb slot, looping back around if necessary
9911          */
9912         i = 0;
9913         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9914                 i++;
9915         if (i >= I40E_MAX_VEB) {
9916                 ret = -ENOMEM;
9917                 goto err_alloc_veb;  /* out of VEB slots! */
9918         }
9919
9920         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9921         if (!veb) {
9922                 ret = -ENOMEM;
9923                 goto err_alloc_veb;
9924         }
9925         veb->pf = pf;
9926         veb->idx = i;
9927         veb->enabled_tc = 1;
9928
9929         pf->veb[i] = veb;
9930         ret = i;
9931 err_alloc_veb:
9932         mutex_unlock(&pf->switch_mutex);
9933         return ret;
9934 }
9935
9936 /**
9937  * i40e_switch_branch_release - Delete a branch of the switch tree
9938  * @branch: where to start deleting
9939  *
9940  * This uses recursion to find the tips of the branch to be
9941  * removed, deleting until we get back to and can delete this VEB.
9942  **/
9943 static void i40e_switch_branch_release(struct i40e_veb *branch)
9944 {
9945         struct i40e_pf *pf = branch->pf;
9946         u16 branch_seid = branch->seid;
9947         u16 veb_idx = branch->idx;
9948         int i;
9949
9950         /* release any VEBs on this VEB - RECURSION */
9951         for (i = 0; i < I40E_MAX_VEB; i++) {
9952                 if (!pf->veb[i])
9953                         continue;
9954                 if (pf->veb[i]->uplink_seid == branch->seid)
9955                         i40e_switch_branch_release(pf->veb[i]);
9956         }
9957
9958         /* Release the VSIs on this VEB, but not the owner VSI.
9959          *
9960          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9961          *       the VEB itself, so don't use (*branch) after this loop.
9962          */
9963         for (i = 0; i < pf->num_alloc_vsi; i++) {
9964                 if (!pf->vsi[i])
9965                         continue;
9966                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9967                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9968                         i40e_vsi_release(pf->vsi[i]);
9969                 }
9970         }
9971
9972         /* There's one corner case where the VEB might not have been
9973          * removed, so double check it here and remove it if needed.
9974          * This case happens if the veb was created from the debugfs
9975          * commands and no VSIs were added to it.
9976          */
9977         if (pf->veb[veb_idx])
9978                 i40e_veb_release(pf->veb[veb_idx]);
9979 }
9980
9981 /**
9982  * i40e_veb_clear - remove veb struct
9983  * @veb: the veb to remove
9984  **/
9985 static void i40e_veb_clear(struct i40e_veb *veb)
9986 {
9987         if (!veb)
9988                 return;
9989
9990         if (veb->pf) {
9991                 struct i40e_pf *pf = veb->pf;
9992
9993                 mutex_lock(&pf->switch_mutex);
9994                 if (pf->veb[veb->idx] == veb)
9995                         pf->veb[veb->idx] = NULL;
9996                 mutex_unlock(&pf->switch_mutex);
9997         }
9998
9999         kfree(veb);
10000 }
10001
10002 /**
10003  * i40e_veb_release - Delete a VEB and free its resources
10004  * @veb: the VEB being removed
10005  **/
10006 void i40e_veb_release(struct i40e_veb *veb)
10007 {
10008         struct i40e_vsi *vsi = NULL;
10009         struct i40e_pf *pf;
10010         int i, n = 0;
10011
10012         pf = veb->pf;
10013
10014         /* find the remaining VSI and check for extras */
10015         for (i = 0; i < pf->num_alloc_vsi; i++) {
10016                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10017                         n++;
10018                         vsi = pf->vsi[i];
10019                 }
10020         }
10021         if (n != 1) {
10022                 dev_info(&pf->pdev->dev,
10023                          "can't remove VEB %d with %d VSIs left\n",
10024                          veb->seid, n);
10025                 return;
10026         }
10027
10028         /* move the remaining VSI to uplink veb */
10029         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10030         if (veb->uplink_seid) {
10031                 vsi->uplink_seid = veb->uplink_seid;
10032                 if (veb->uplink_seid == pf->mac_seid)
10033                         vsi->veb_idx = I40E_NO_VEB;
10034                 else
10035                         vsi->veb_idx = veb->veb_idx;
10036         } else {
10037                 /* floating VEB */
10038                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10039                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10040         }
10041
10042         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10043         i40e_veb_clear(veb);
10044 }
10045
10046 /**
10047  * i40e_add_veb - create the VEB in the switch
10048  * @veb: the VEB to be instantiated
10049  * @vsi: the controlling VSI
10050  **/
10051 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10052 {
10053         struct i40e_pf *pf = veb->pf;
10054         bool is_default = veb->pf->cur_promisc;
10055         bool is_cloud = false;
10056         int ret;
10057
10058         /* get a VEB from the hardware */
10059         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10060                               veb->enabled_tc, is_default,
10061                               is_cloud, &veb->seid, NULL);
10062         if (ret) {
10063                 dev_info(&pf->pdev->dev,
10064                          "couldn't add VEB, err %s aq_err %s\n",
10065                          i40e_stat_str(&pf->hw, ret),
10066                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10067                 return -EPERM;
10068         }
10069
10070         /* get statistics counter */
10071         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10072                                          &veb->stats_idx, NULL, NULL, NULL);
10073         if (ret) {
10074                 dev_info(&pf->pdev->dev,
10075                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10076                          i40e_stat_str(&pf->hw, ret),
10077                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10078                 return -EPERM;
10079         }
10080         ret = i40e_veb_get_bw_info(veb);
10081         if (ret) {
10082                 dev_info(&pf->pdev->dev,
10083                          "couldn't get VEB bw info, err %s aq_err %s\n",
10084                          i40e_stat_str(&pf->hw, ret),
10085                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10086                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10087                 return -ENOENT;
10088         }
10089
10090         vsi->uplink_seid = veb->seid;
10091         vsi->veb_idx = veb->idx;
10092         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10093
10094         return 0;
10095 }
10096
10097 /**
10098  * i40e_veb_setup - Set up a VEB
10099  * @pf: board private structure
10100  * @flags: VEB setup flags
10101  * @uplink_seid: the switch element to link to
10102  * @vsi_seid: the initial VSI seid
10103  * @enabled_tc: Enabled TC bit-map
10104  *
10105  * This allocates the sw VEB structure and links it into the switch
10106  * It is possible and legal for this to be a duplicate of an already
10107  * existing VEB.  It is also possible for both uplink and vsi seids
10108  * to be zero, in order to create a floating VEB.
10109  *
10110  * Returns pointer to the successfully allocated VEB sw struct on
10111  * success, otherwise returns NULL on failure.
10112  **/
10113 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10114                                 u16 uplink_seid, u16 vsi_seid,
10115                                 u8 enabled_tc)
10116 {
10117         struct i40e_veb *veb, *uplink_veb = NULL;
10118         int vsi_idx, veb_idx;
10119         int ret;
10120
10121         /* if one seid is 0, the other must be 0 to create a floating relay */
10122         if ((uplink_seid == 0 || vsi_seid == 0) &&
10123             (uplink_seid + vsi_seid != 0)) {
10124                 dev_info(&pf->pdev->dev,
10125                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10126                          uplink_seid, vsi_seid);
10127                 return NULL;
10128         }
10129
10130         /* make sure there is such a vsi and uplink */
10131         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10132                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10133                         break;
10134         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10135                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10136                          vsi_seid);
10137                 return NULL;
10138         }
10139
10140         if (uplink_seid && uplink_seid != pf->mac_seid) {
10141                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10142                         if (pf->veb[veb_idx] &&
10143                             pf->veb[veb_idx]->seid == uplink_seid) {
10144                                 uplink_veb = pf->veb[veb_idx];
10145                                 break;
10146                         }
10147                 }
10148                 if (!uplink_veb) {
10149                         dev_info(&pf->pdev->dev,
10150                                  "uplink seid %d not found\n", uplink_seid);
10151                         return NULL;
10152                 }
10153         }
10154
10155         /* get veb sw struct */
10156         veb_idx = i40e_veb_mem_alloc(pf);
10157         if (veb_idx < 0)
10158                 goto err_alloc;
10159         veb = pf->veb[veb_idx];
10160         veb->flags = flags;
10161         veb->uplink_seid = uplink_seid;
10162         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10163         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10164
10165         /* create the VEB in the switch */
10166         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10167         if (ret)
10168                 goto err_veb;
10169         if (vsi_idx == pf->lan_vsi)
10170                 pf->lan_veb = veb->idx;
10171
10172         return veb;
10173
10174 err_veb:
10175         i40e_veb_clear(veb);
10176 err_alloc:
10177         return NULL;
10178 }
10179
10180 /**
10181  * i40e_setup_pf_switch_element - set PF vars based on switch type
10182  * @pf: board private structure
10183  * @ele: element we are building info from
10184  * @num_reported: total number of elements
10185  * @printconfig: should we print the contents
10186  *
10187  * helper function to assist in extracting a few useful SEID values.
10188  **/
10189 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10190                                 struct i40e_aqc_switch_config_element_resp *ele,
10191                                 u16 num_reported, bool printconfig)
10192 {
10193         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10194         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10195         u8 element_type = ele->element_type;
10196         u16 seid = le16_to_cpu(ele->seid);
10197
10198         if (printconfig)
10199                 dev_info(&pf->pdev->dev,
10200                          "type=%d seid=%d uplink=%d downlink=%d\n",
10201                          element_type, seid, uplink_seid, downlink_seid);
10202
10203         switch (element_type) {
10204         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10205                 pf->mac_seid = seid;
10206                 break;
10207         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10208                 /* Main VEB? */
10209                 if (uplink_seid != pf->mac_seid)
10210                         break;
10211                 if (pf->lan_veb == I40E_NO_VEB) {
10212                         int v;
10213
10214                         /* find existing or else empty VEB */
10215                         for (v = 0; v < I40E_MAX_VEB; v++) {
10216                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10217                                         pf->lan_veb = v;
10218                                         break;
10219                                 }
10220                         }
10221                         if (pf->lan_veb == I40E_NO_VEB) {
10222                                 v = i40e_veb_mem_alloc(pf);
10223                                 if (v < 0)
10224                                         break;
10225                                 pf->lan_veb = v;
10226                         }
10227                 }
10228
10229                 pf->veb[pf->lan_veb]->seid = seid;
10230                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10231                 pf->veb[pf->lan_veb]->pf = pf;
10232                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10233                 break;
10234         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10235                 if (num_reported != 1)
10236                         break;
10237                 /* This is immediately after a reset so we can assume this is
10238                  * the PF's VSI
10239                  */
10240                 pf->mac_seid = uplink_seid;
10241                 pf->pf_seid = downlink_seid;
10242                 pf->main_vsi_seid = seid;
10243                 if (printconfig)
10244                         dev_info(&pf->pdev->dev,
10245                                  "pf_seid=%d main_vsi_seid=%d\n",
10246                                  pf->pf_seid, pf->main_vsi_seid);
10247                 break;
10248         case I40E_SWITCH_ELEMENT_TYPE_PF:
10249         case I40E_SWITCH_ELEMENT_TYPE_VF:
10250         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10251         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10252         case I40E_SWITCH_ELEMENT_TYPE_PE:
10253         case I40E_SWITCH_ELEMENT_TYPE_PA:
10254                 /* ignore these for now */
10255                 break;
10256         default:
10257                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10258                          element_type, seid);
10259                 break;
10260         }
10261 }
10262
10263 /**
10264  * i40e_fetch_switch_configuration - Get switch config from firmware
10265  * @pf: board private structure
10266  * @printconfig: should we print the contents
10267  *
10268  * Get the current switch configuration from the device and
10269  * extract a few useful SEID values.
10270  **/
10271 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10272 {
10273         struct i40e_aqc_get_switch_config_resp *sw_config;
10274         u16 next_seid = 0;
10275         int ret = 0;
10276         u8 *aq_buf;
10277         int i;
10278
10279         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10280         if (!aq_buf)
10281                 return -ENOMEM;
10282
10283         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10284         do {
10285                 u16 num_reported, num_total;
10286
10287                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10288                                                 I40E_AQ_LARGE_BUF,
10289                                                 &next_seid, NULL);
10290                 if (ret) {
10291                         dev_info(&pf->pdev->dev,
10292                                  "get switch config failed err %s aq_err %s\n",
10293                                  i40e_stat_str(&pf->hw, ret),
10294                                  i40e_aq_str(&pf->hw,
10295                                              pf->hw.aq.asq_last_status));
10296                         kfree(aq_buf);
10297                         return -ENOENT;
10298                 }
10299
10300                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10301                 num_total = le16_to_cpu(sw_config->header.num_total);
10302
10303                 if (printconfig)
10304                         dev_info(&pf->pdev->dev,
10305                                  "header: %d reported %d total\n",
10306                                  num_reported, num_total);
10307
10308                 for (i = 0; i < num_reported; i++) {
10309                         struct i40e_aqc_switch_config_element_resp *ele =
10310                                 &sw_config->element[i];
10311
10312                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10313                                                      printconfig);
10314                 }
10315         } while (next_seid != 0);
10316
10317         kfree(aq_buf);
10318         return ret;
10319 }
10320
10321 /**
10322  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10323  * @pf: board private structure
10324  * @reinit: if the Main VSI needs to re-initialized.
10325  *
10326  * Returns 0 on success, negative value on failure
10327  **/
10328 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10329 {
10330         int ret;
10331
10332         /* find out what's out there already */
10333         ret = i40e_fetch_switch_configuration(pf, false);
10334         if (ret) {
10335                 dev_info(&pf->pdev->dev,
10336                          "couldn't fetch switch config, err %s aq_err %s\n",
10337                          i40e_stat_str(&pf->hw, ret),
10338                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10339                 return ret;
10340         }
10341         i40e_pf_reset_stats(pf);
10342
10343         /* first time setup */
10344         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10345                 struct i40e_vsi *vsi = NULL;
10346                 u16 uplink_seid;
10347
10348                 /* Set up the PF VSI associated with the PF's main VSI
10349                  * that is already in the HW switch
10350                  */
10351                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10352                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10353                 else
10354                         uplink_seid = pf->mac_seid;
10355                 if (pf->lan_vsi == I40E_NO_VSI)
10356                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10357                 else if (reinit)
10358                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10359                 if (!vsi) {
10360                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10361                         i40e_fdir_teardown(pf);
10362                         return -EAGAIN;
10363                 }
10364         } else {
10365                 /* force a reset of TC and queue layout configurations */
10366                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10367
10368                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10369                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10370                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10371         }
10372         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10373
10374         i40e_fdir_sb_setup(pf);
10375
10376         /* Setup static PF queue filter control settings */
10377         ret = i40e_setup_pf_filter_control(pf);
10378         if (ret) {
10379                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10380                          ret);
10381                 /* Failure here should not stop continuing other steps */
10382         }
10383
10384         /* enable RSS in the HW, even for only one queue, as the stack can use
10385          * the hash
10386          */
10387         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10388                 i40e_pf_config_rss(pf);
10389
10390         /* fill in link information and enable LSE reporting */
10391         i40e_update_link_info(&pf->hw);
10392         i40e_link_event(pf);
10393
10394         /* Initialize user-specific link properties */
10395         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10396                                   I40E_AQ_AN_COMPLETED) ? true : false);
10397
10398         i40e_ptp_init(pf);
10399
10400         return ret;
10401 }
10402
10403 /**
10404  * i40e_determine_queue_usage - Work out queue distribution
10405  * @pf: board private structure
10406  **/
10407 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10408 {
10409         int queues_left;
10410
10411         pf->num_lan_qps = 0;
10412 #ifdef I40E_FCOE
10413         pf->num_fcoe_qps = 0;
10414 #endif
10415
10416         /* Find the max queues to be put into basic use.  We'll always be
10417          * using TC0, whether or not DCB is running, and TC0 will get the
10418          * big RSS set.
10419          */
10420         queues_left = pf->hw.func_caps.num_tx_qp;
10421
10422         if ((queues_left == 1) ||
10423             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10424                 /* one qp for PF, no queues for anything else */
10425                 queues_left = 0;
10426                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10427
10428                 /* make sure all the fancies are disabled */
10429                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10430 #ifdef I40E_FCOE
10431                                I40E_FLAG_FCOE_ENABLED   |
10432 #endif
10433                                I40E_FLAG_FD_SB_ENABLED  |
10434                                I40E_FLAG_FD_ATR_ENABLED |
10435                                I40E_FLAG_DCB_CAPABLE    |
10436                                I40E_FLAG_SRIOV_ENABLED  |
10437                                I40E_FLAG_VMDQ_ENABLED);
10438         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10439                                   I40E_FLAG_FD_SB_ENABLED |
10440                                   I40E_FLAG_FD_ATR_ENABLED |
10441                                   I40E_FLAG_DCB_CAPABLE))) {
10442                 /* one qp for PF */
10443                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10444                 queues_left -= pf->num_lan_qps;
10445
10446                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10447 #ifdef I40E_FCOE
10448                                I40E_FLAG_FCOE_ENABLED   |
10449 #endif
10450                                I40E_FLAG_FD_SB_ENABLED  |
10451                                I40E_FLAG_FD_ATR_ENABLED |
10452                                I40E_FLAG_DCB_ENABLED    |
10453                                I40E_FLAG_VMDQ_ENABLED);
10454         } else {
10455                 /* Not enough queues for all TCs */
10456                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10457                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10458                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10459                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10460                 }
10461                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10462                                         num_online_cpus());
10463                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10464                                         pf->hw.func_caps.num_tx_qp);
10465
10466                 queues_left -= pf->num_lan_qps;
10467         }
10468
10469 #ifdef I40E_FCOE
10470         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10471                 if (I40E_DEFAULT_FCOE <= queues_left) {
10472                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10473                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10474                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10475                 } else {
10476                         pf->num_fcoe_qps = 0;
10477                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10478                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10479                 }
10480
10481                 queues_left -= pf->num_fcoe_qps;
10482         }
10483
10484 #endif
10485         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10486                 if (queues_left > 1) {
10487                         queues_left -= 1; /* save 1 queue for FD */
10488                 } else {
10489                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10490                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10491                 }
10492         }
10493
10494         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10495             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10496                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10497                                         (queues_left / pf->num_vf_qps));
10498                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10499         }
10500
10501         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10502             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10503                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10504                                           (queues_left / pf->num_vmdq_qps));
10505                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10506         }
10507
10508         pf->queues_left = queues_left;
10509         dev_dbg(&pf->pdev->dev,
10510                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10511                 pf->hw.func_caps.num_tx_qp,
10512                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10513                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10514                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10515                 queues_left);
10516 #ifdef I40E_FCOE
10517         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10518 #endif
10519 }
10520
10521 /**
10522  * i40e_setup_pf_filter_control - Setup PF static filter control
10523  * @pf: PF to be setup
10524  *
10525  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10526  * settings. If PE/FCoE are enabled then it will also set the per PF
10527  * based filter sizes required for them. It also enables Flow director,
10528  * ethertype and macvlan type filter settings for the pf.
10529  *
10530  * Returns 0 on success, negative on failure
10531  **/
10532 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10533 {
10534         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10535
10536         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10537
10538         /* Flow Director is enabled */
10539         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10540                 settings->enable_fdir = true;
10541
10542         /* Ethtype and MACVLAN filters enabled for PF */
10543         settings->enable_ethtype = true;
10544         settings->enable_macvlan = true;
10545
10546         if (i40e_set_filter_control(&pf->hw, settings))
10547                 return -ENOENT;
10548
10549         return 0;
10550 }
10551
10552 #define INFO_STRING_LEN 255
10553 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10554 static void i40e_print_features(struct i40e_pf *pf)
10555 {
10556         struct i40e_hw *hw = &pf->hw;
10557         char *buf;
10558         int i;
10559
10560         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10561         if (!buf)
10562                 return;
10563
10564         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10565 #ifdef CONFIG_PCI_IOV
10566         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10567 #endif
10568         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10569                       pf->hw.func_caps.num_vsis,
10570                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10571                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10572
10573         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10574                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10575         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10576                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10577         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10578                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10579                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10580         }
10581         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10582                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10583 #if IS_ENABLED(CONFIG_VXLAN)
10584         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10585 #endif
10586 #if IS_ENABLED(CONFIG_GENEVE)
10587         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10588 #endif
10589         if (pf->flags & I40E_FLAG_PTP)
10590                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10591 #ifdef I40E_FCOE
10592         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10593                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10594 #endif
10595         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10596                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10597         else
10598                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10599
10600         dev_info(&pf->pdev->dev, "%s\n", buf);
10601         kfree(buf);
10602         WARN_ON(i > INFO_STRING_LEN);
10603 }
10604
10605 /**
10606  * i40e_get_platform_mac_addr - get platform-specific MAC address
10607  *
10608  * @pdev: PCI device information struct
10609  * @pf: board private structure
10610  *
10611  * Look up the MAC address in Open Firmware  on systems that support it,
10612  * and use IDPROM on SPARC if no OF address is found. On return, the
10613  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10614  * has been selected.
10615  **/
10616 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10617 {
10618         struct device_node *dp = pci_device_to_OF_node(pdev);
10619         const unsigned char *addr;
10620         u8 *mac_addr = pf->hw.mac.addr;
10621
10622         pf->flags &= ~I40E_FLAG_PF_MAC;
10623         addr = of_get_mac_address(dp);
10624         if (addr) {
10625                 ether_addr_copy(mac_addr, addr);
10626                 pf->flags |= I40E_FLAG_PF_MAC;
10627 #ifdef CONFIG_SPARC
10628         } else {
10629                 ether_addr_copy(mac_addr, idprom->id_ethaddr);
10630                 pf->flags |= I40E_FLAG_PF_MAC;
10631 #endif /* CONFIG_SPARC */
10632         }
10633 }
10634
10635 /**
10636  * i40e_probe - Device initialization routine
10637  * @pdev: PCI device information struct
10638  * @ent: entry in i40e_pci_tbl
10639  *
10640  * i40e_probe initializes a PF identified by a pci_dev structure.
10641  * The OS initialization, configuring of the PF private structure,
10642  * and a hardware reset occur.
10643  *
10644  * Returns 0 on success, negative on failure
10645  **/
10646 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10647 {
10648         struct i40e_aq_get_phy_abilities_resp abilities;
10649         struct i40e_pf *pf;
10650         struct i40e_hw *hw;
10651         static u16 pfs_found;
10652         u16 wol_nvm_bits;
10653         u16 link_status;
10654         int err;
10655         u32 val;
10656         u32 i;
10657         u8 set_fc_aq_fail;
10658
10659         err = pci_enable_device_mem(pdev);
10660         if (err)
10661                 return err;
10662
10663         /* set up for high or low dma */
10664         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10665         if (err) {
10666                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10667                 if (err) {
10668                         dev_err(&pdev->dev,
10669                                 "DMA configuration failed: 0x%x\n", err);
10670                         goto err_dma;
10671                 }
10672         }
10673
10674         /* set up pci connections */
10675         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10676                                            IORESOURCE_MEM), i40e_driver_name);
10677         if (err) {
10678                 dev_info(&pdev->dev,
10679                          "pci_request_selected_regions failed %d\n", err);
10680                 goto err_pci_reg;
10681         }
10682
10683         pci_enable_pcie_error_reporting(pdev);
10684         pci_set_master(pdev);
10685
10686         /* Now that we have a PCI connection, we need to do the
10687          * low level device setup.  This is primarily setting up
10688          * the Admin Queue structures and then querying for the
10689          * device's current profile information.
10690          */
10691         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10692         if (!pf) {
10693                 err = -ENOMEM;
10694                 goto err_pf_alloc;
10695         }
10696         pf->next_vsi = 0;
10697         pf->pdev = pdev;
10698         set_bit(__I40E_DOWN, &pf->state);
10699
10700         hw = &pf->hw;
10701         hw->back = pf;
10702
10703         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10704                                 I40E_MAX_CSR_SPACE);
10705
10706         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10707         if (!hw->hw_addr) {
10708                 err = -EIO;
10709                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10710                          (unsigned int)pci_resource_start(pdev, 0),
10711                          pf->ioremap_len, err);
10712                 goto err_ioremap;
10713         }
10714         hw->vendor_id = pdev->vendor;
10715         hw->device_id = pdev->device;
10716         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10717         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10718         hw->subsystem_device_id = pdev->subsystem_device;
10719         hw->bus.device = PCI_SLOT(pdev->devfn);
10720         hw->bus.func = PCI_FUNC(pdev->devfn);
10721         pf->instance = pfs_found;
10722
10723         if (debug != -1) {
10724                 pf->msg_enable = pf->hw.debug_mask;
10725                 pf->msg_enable = debug;
10726         }
10727
10728         /* do a special CORER for clearing PXE mode once at init */
10729         if (hw->revision_id == 0 &&
10730             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10731                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10732                 i40e_flush(hw);
10733                 msleep(200);
10734                 pf->corer_count++;
10735
10736                 i40e_clear_pxe_mode(hw);
10737         }
10738
10739         /* Reset here to make sure all is clean and to define PF 'n' */
10740         i40e_clear_hw(hw);
10741         err = i40e_pf_reset(hw);
10742         if (err) {
10743                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10744                 goto err_pf_reset;
10745         }
10746         pf->pfr_count++;
10747
10748         hw->aq.num_arq_entries = I40E_AQ_LEN;
10749         hw->aq.num_asq_entries = I40E_AQ_LEN;
10750         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10751         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10752         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10753
10754         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10755                  "%s-%s:misc",
10756                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10757
10758         err = i40e_init_shared_code(hw);
10759         if (err) {
10760                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10761                          err);
10762                 goto err_pf_reset;
10763         }
10764
10765         /* set up a default setting for link flow control */
10766         pf->hw.fc.requested_mode = I40E_FC_NONE;
10767
10768         /* set up the locks for the AQ, do this only once in probe
10769          * and destroy them only once in remove
10770          */
10771         mutex_init(&hw->aq.asq_mutex);
10772         mutex_init(&hw->aq.arq_mutex);
10773
10774         err = i40e_init_adminq(hw);
10775         if (err) {
10776                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10777                         dev_info(&pdev->dev,
10778                                  "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");
10779                 else
10780                         dev_info(&pdev->dev,
10781                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10782
10783                 goto err_pf_reset;
10784         }
10785
10786         /* provide nvm, fw, api versions */
10787         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10788                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10789                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10790                  i40e_nvm_version_str(hw));
10791
10792         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10793             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10794                 dev_info(&pdev->dev,
10795                          "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");
10796         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10797                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10798                 dev_info(&pdev->dev,
10799                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10800
10801         i40e_verify_eeprom(pf);
10802
10803         /* Rev 0 hardware was never productized */
10804         if (hw->revision_id < 1)
10805                 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");
10806
10807         i40e_clear_pxe_mode(hw);
10808         err = i40e_get_capabilities(pf);
10809         if (err)
10810                 goto err_adminq_setup;
10811
10812         err = i40e_sw_init(pf);
10813         if (err) {
10814                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10815                 goto err_sw_init;
10816         }
10817
10818         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10819                                 hw->func_caps.num_rx_qp,
10820                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10821         if (err) {
10822                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10823                 goto err_init_lan_hmc;
10824         }
10825
10826         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10827         if (err) {
10828                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10829                 err = -ENOENT;
10830                 goto err_configure_lan_hmc;
10831         }
10832
10833         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10834          * Ignore error return codes because if it was already disabled via
10835          * hardware settings this will fail
10836          */
10837         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10838             (pf->hw.aq.fw_maj_ver < 4)) {
10839                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10840                 i40e_aq_stop_lldp(hw, true, NULL);
10841         }
10842
10843         i40e_get_mac_addr(hw, hw->mac.addr);
10844         /* allow a platform config to override the HW addr */
10845         i40e_get_platform_mac_addr(pdev, pf);
10846         if (!is_valid_ether_addr(hw->mac.addr)) {
10847                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10848                 err = -EIO;
10849                 goto err_mac_addr;
10850         }
10851         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10852         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10853         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10854         if (is_valid_ether_addr(hw->mac.port_addr))
10855                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10856 #ifdef I40E_FCOE
10857         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10858         if (err)
10859                 dev_info(&pdev->dev,
10860                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10861         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10862                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10863                          hw->mac.san_addr);
10864                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10865         }
10866         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10867 #endif /* I40E_FCOE */
10868
10869         pci_set_drvdata(pdev, pf);
10870         pci_save_state(pdev);
10871 #ifdef CONFIG_I40E_DCB
10872         err = i40e_init_pf_dcb(pf);
10873         if (err) {
10874                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10875                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10876                 /* Continue without DCB enabled */
10877         }
10878 #endif /* CONFIG_I40E_DCB */
10879
10880         /* set up periodic task facility */
10881         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10882         pf->service_timer_period = HZ;
10883
10884         INIT_WORK(&pf->service_task, i40e_service_task);
10885         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10886         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10887
10888         /* NVM bit on means WoL disabled for the port */
10889         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10890         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10891                 pf->wol_en = false;
10892         else
10893                 pf->wol_en = true;
10894         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10895
10896         /* set up the main switch operations */
10897         i40e_determine_queue_usage(pf);
10898         err = i40e_init_interrupt_scheme(pf);
10899         if (err)
10900                 goto err_switch_setup;
10901
10902         /* The number of VSIs reported by the FW is the minimum guaranteed
10903          * to us; HW supports far more and we share the remaining pool with
10904          * the other PFs. We allocate space for more than the guarantee with
10905          * the understanding that we might not get them all later.
10906          */
10907         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10908                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10909         else
10910                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10911
10912         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10913         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10914                           GFP_KERNEL);
10915         if (!pf->vsi) {
10916                 err = -ENOMEM;
10917                 goto err_switch_setup;
10918         }
10919
10920 #ifdef CONFIG_PCI_IOV
10921         /* prep for VF support */
10922         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10923             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10924             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10925                 if (pci_num_vf(pdev))
10926                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10927         }
10928 #endif
10929         err = i40e_setup_pf_switch(pf, false);
10930         if (err) {
10931                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10932                 goto err_vsis;
10933         }
10934
10935         /* Make sure flow control is set according to current settings */
10936         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10937         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10938                 dev_dbg(&pf->pdev->dev,
10939                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10940                         i40e_stat_str(hw, err),
10941                         i40e_aq_str(hw, hw->aq.asq_last_status));
10942         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10943                 dev_dbg(&pf->pdev->dev,
10944                         "Set fc with err %s aq_err %s on set_phy_config\n",
10945                         i40e_stat_str(hw, err),
10946                         i40e_aq_str(hw, hw->aq.asq_last_status));
10947         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10948                 dev_dbg(&pf->pdev->dev,
10949                         "Set fc with err %s aq_err %s on get_link_info\n",
10950                         i40e_stat_str(hw, err),
10951                         i40e_aq_str(hw, hw->aq.asq_last_status));
10952
10953         /* if FDIR VSI was set up, start it now */
10954         for (i = 0; i < pf->num_alloc_vsi; i++) {
10955                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10956                         i40e_vsi_open(pf->vsi[i]);
10957                         break;
10958                 }
10959         }
10960
10961         /* The driver only wants link up/down and module qualification
10962          * reports from firmware.  Note the negative logic.
10963          */
10964         err = i40e_aq_set_phy_int_mask(&pf->hw,
10965                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10966                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10967         if (err)
10968                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10969                          i40e_stat_str(&pf->hw, err),
10970                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10971
10972         /* Reconfigure hardware for allowing smaller MSS in the case
10973          * of TSO, so that we avoid the MDD being fired and causing
10974          * a reset in the case of small MSS+TSO.
10975          */
10976         val = rd32(hw, I40E_REG_MSS);
10977         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10978                 val &= ~I40E_REG_MSS_MIN_MASK;
10979                 val |= I40E_64BYTE_MSS;
10980                 wr32(hw, I40E_REG_MSS, val);
10981         }
10982
10983         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
10984                 msleep(75);
10985                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10986                 if (err)
10987                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10988                                  i40e_stat_str(&pf->hw, err),
10989                                  i40e_aq_str(&pf->hw,
10990                                              pf->hw.aq.asq_last_status));
10991         }
10992         /* The main driver is (mostly) up and happy. We need to set this state
10993          * before setting up the misc vector or we get a race and the vector
10994          * ends up disabled forever.
10995          */
10996         clear_bit(__I40E_DOWN, &pf->state);
10997
10998         /* In case of MSIX we are going to setup the misc vector right here
10999          * to handle admin queue events etc. In case of legacy and MSI
11000          * the misc functionality and queue processing is combined in
11001          * the same vector and that gets setup at open.
11002          */
11003         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11004                 err = i40e_setup_misc_vector(pf);
11005                 if (err) {
11006                         dev_info(&pdev->dev,
11007                                  "setup of misc vector failed: %d\n", err);
11008                         goto err_vsis;
11009                 }
11010         }
11011
11012 #ifdef CONFIG_PCI_IOV
11013         /* prep for VF support */
11014         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11015             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11016             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11017                 /* disable link interrupts for VFs */
11018                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11019                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11020                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11021                 i40e_flush(hw);
11022
11023                 if (pci_num_vf(pdev)) {
11024                         dev_info(&pdev->dev,
11025                                  "Active VFs found, allocating resources.\n");
11026                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11027                         if (err)
11028                                 dev_info(&pdev->dev,
11029                                          "Error %d allocating resources for existing VFs\n",
11030                                          err);
11031                 }
11032         }
11033 #endif /* CONFIG_PCI_IOV */
11034
11035         pfs_found++;
11036
11037         i40e_dbg_pf_init(pf);
11038
11039         /* tell the firmware that we're starting */
11040         i40e_send_version(pf);
11041
11042         /* since everything's happy, start the service_task timer */
11043         mod_timer(&pf->service_timer,
11044                   round_jiffies(jiffies + pf->service_timer_period));
11045
11046 #ifdef I40E_FCOE
11047         /* create FCoE interface */
11048         i40e_fcoe_vsi_setup(pf);
11049
11050 #endif
11051 #define PCI_SPEED_SIZE 8
11052 #define PCI_WIDTH_SIZE 8
11053         /* Devices on the IOSF bus do not have this information
11054          * and will report PCI Gen 1 x 1 by default so don't bother
11055          * checking them.
11056          */
11057         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11058                 char speed[PCI_SPEED_SIZE] = "Unknown";
11059                 char width[PCI_WIDTH_SIZE] = "Unknown";
11060
11061                 /* Get the negotiated link width and speed from PCI config
11062                  * space
11063                  */
11064                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11065                                           &link_status);
11066
11067                 i40e_set_pci_config_data(hw, link_status);
11068
11069                 switch (hw->bus.speed) {
11070                 case i40e_bus_speed_8000:
11071                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11072                 case i40e_bus_speed_5000:
11073                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11074                 case i40e_bus_speed_2500:
11075                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11076                 default:
11077                         break;
11078                 }
11079                 switch (hw->bus.width) {
11080                 case i40e_bus_width_pcie_x8:
11081                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11082                 case i40e_bus_width_pcie_x4:
11083                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11084                 case i40e_bus_width_pcie_x2:
11085                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11086                 case i40e_bus_width_pcie_x1:
11087                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11088                 default:
11089                         break;
11090                 }
11091
11092                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11093                          speed, width);
11094
11095                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11096                     hw->bus.speed < i40e_bus_speed_8000) {
11097                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11098                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11099                 }
11100         }
11101
11102         /* get the requested speeds from the fw */
11103         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11104         if (err)
11105                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11106                         i40e_stat_str(&pf->hw, err),
11107                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11108         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11109
11110         /* get the supported phy types from the fw */
11111         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11112         if (err)
11113                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11114                         i40e_stat_str(&pf->hw, err),
11115                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11116         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11117
11118         /* Add a filter to drop all Flow control frames from any VSI from being
11119          * transmitted. By doing so we stop a malicious VF from sending out
11120          * PAUSE or PFC frames and potentially controlling traffic for other
11121          * PF/VF VSIs.
11122          * The FW can still send Flow control frames if enabled.
11123          */
11124         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11125                                                        pf->main_vsi_seid);
11126
11127         /* print a string summarizing features */
11128         i40e_print_features(pf);
11129
11130         return 0;
11131
11132         /* Unwind what we've done if something failed in the setup */
11133 err_vsis:
11134         set_bit(__I40E_DOWN, &pf->state);
11135         i40e_clear_interrupt_scheme(pf);
11136         kfree(pf->vsi);
11137 err_switch_setup:
11138         i40e_reset_interrupt_capability(pf);
11139         del_timer_sync(&pf->service_timer);
11140 err_mac_addr:
11141 err_configure_lan_hmc:
11142         (void)i40e_shutdown_lan_hmc(hw);
11143 err_init_lan_hmc:
11144         kfree(pf->qp_pile);
11145 err_sw_init:
11146 err_adminq_setup:
11147         (void)i40e_shutdown_adminq(hw);
11148 err_pf_reset:
11149         iounmap(hw->hw_addr);
11150 err_ioremap:
11151         kfree(pf);
11152 err_pf_alloc:
11153         pci_disable_pcie_error_reporting(pdev);
11154         pci_release_selected_regions(pdev,
11155                                      pci_select_bars(pdev, IORESOURCE_MEM));
11156 err_pci_reg:
11157 err_dma:
11158         pci_disable_device(pdev);
11159         return err;
11160 }
11161
11162 /**
11163  * i40e_remove - Device removal routine
11164  * @pdev: PCI device information struct
11165  *
11166  * i40e_remove is called by the PCI subsystem to alert the driver
11167  * that is should release a PCI device.  This could be caused by a
11168  * Hot-Plug event, or because the driver is going to be removed from
11169  * memory.
11170  **/
11171 static void i40e_remove(struct pci_dev *pdev)
11172 {
11173         struct i40e_pf *pf = pci_get_drvdata(pdev);
11174         struct i40e_hw *hw = &pf->hw;
11175         i40e_status ret_code;
11176         int i;
11177
11178         i40e_dbg_pf_exit(pf);
11179
11180         i40e_ptp_stop(pf);
11181
11182         /* Disable RSS in hw */
11183         wr32(hw, I40E_PFQF_HENA(0), 0);
11184         wr32(hw, I40E_PFQF_HENA(1), 0);
11185
11186         /* no more scheduling of any task */
11187         set_bit(__I40E_DOWN, &pf->state);
11188         del_timer_sync(&pf->service_timer);
11189         cancel_work_sync(&pf->service_task);
11190
11191         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11192                 i40e_free_vfs(pf);
11193                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11194         }
11195
11196         i40e_fdir_teardown(pf);
11197
11198         /* If there is a switch structure or any orphans, remove them.
11199          * This will leave only the PF's VSI remaining.
11200          */
11201         for (i = 0; i < I40E_MAX_VEB; i++) {
11202                 if (!pf->veb[i])
11203                         continue;
11204
11205                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11206                     pf->veb[i]->uplink_seid == 0)
11207                         i40e_switch_branch_release(pf->veb[i]);
11208         }
11209
11210         /* Now we can shutdown the PF's VSI, just before we kill
11211          * adminq and hmc.
11212          */
11213         if (pf->vsi[pf->lan_vsi])
11214                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11215
11216         /* shutdown and destroy the HMC */
11217         if (pf->hw.hmc.hmc_obj) {
11218                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
11219                 if (ret_code)
11220                         dev_warn(&pdev->dev,
11221                                  "Failed to destroy the HMC resources: %d\n",
11222                                  ret_code);
11223         }
11224
11225         /* shutdown the adminq */
11226         ret_code = i40e_shutdown_adminq(&pf->hw);
11227         if (ret_code)
11228                 dev_warn(&pdev->dev,
11229                          "Failed to destroy the Admin Queue resources: %d\n",
11230                          ret_code);
11231
11232         /* destroy the locks only once, here */
11233         mutex_destroy(&hw->aq.arq_mutex);
11234         mutex_destroy(&hw->aq.asq_mutex);
11235
11236         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11237         i40e_clear_interrupt_scheme(pf);
11238         for (i = 0; i < pf->num_alloc_vsi; i++) {
11239                 if (pf->vsi[i]) {
11240                         i40e_vsi_clear_rings(pf->vsi[i]);
11241                         i40e_vsi_clear(pf->vsi[i]);
11242                         pf->vsi[i] = NULL;
11243                 }
11244         }
11245
11246         for (i = 0; i < I40E_MAX_VEB; i++) {
11247                 kfree(pf->veb[i]);
11248                 pf->veb[i] = NULL;
11249         }
11250
11251         kfree(pf->qp_pile);
11252         kfree(pf->vsi);
11253
11254         iounmap(pf->hw.hw_addr);
11255         kfree(pf);
11256         pci_release_selected_regions(pdev,
11257                                      pci_select_bars(pdev, IORESOURCE_MEM));
11258
11259         pci_disable_pcie_error_reporting(pdev);
11260         pci_disable_device(pdev);
11261 }
11262
11263 /**
11264  * i40e_pci_error_detected - warning that something funky happened in PCI land
11265  * @pdev: PCI device information struct
11266  *
11267  * Called to warn that something happened and the error handling steps
11268  * are in progress.  Allows the driver to quiesce things, be ready for
11269  * remediation.
11270  **/
11271 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11272                                                 enum pci_channel_state error)
11273 {
11274         struct i40e_pf *pf = pci_get_drvdata(pdev);
11275
11276         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11277
11278         /* shutdown all operations */
11279         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11280                 rtnl_lock();
11281                 i40e_prep_for_reset(pf);
11282                 rtnl_unlock();
11283         }
11284
11285         /* Request a slot reset */
11286         return PCI_ERS_RESULT_NEED_RESET;
11287 }
11288
11289 /**
11290  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11291  * @pdev: PCI device information struct
11292  *
11293  * Called to find if the driver can work with the device now that
11294  * the pci slot has been reset.  If a basic connection seems good
11295  * (registers are readable and have sane content) then return a
11296  * happy little PCI_ERS_RESULT_xxx.
11297  **/
11298 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11299 {
11300         struct i40e_pf *pf = pci_get_drvdata(pdev);
11301         pci_ers_result_t result;
11302         int err;
11303         u32 reg;
11304
11305         dev_dbg(&pdev->dev, "%s\n", __func__);
11306         if (pci_enable_device_mem(pdev)) {
11307                 dev_info(&pdev->dev,
11308                          "Cannot re-enable PCI device after reset.\n");
11309                 result = PCI_ERS_RESULT_DISCONNECT;
11310         } else {
11311                 pci_set_master(pdev);
11312                 pci_restore_state(pdev);
11313                 pci_save_state(pdev);
11314                 pci_wake_from_d3(pdev, false);
11315
11316                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11317                 if (reg == 0)
11318                         result = PCI_ERS_RESULT_RECOVERED;
11319                 else
11320                         result = PCI_ERS_RESULT_DISCONNECT;
11321         }
11322
11323         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11324         if (err) {
11325                 dev_info(&pdev->dev,
11326                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11327                          err);
11328                 /* non-fatal, continue */
11329         }
11330
11331         return result;
11332 }
11333
11334 /**
11335  * i40e_pci_error_resume - restart operations after PCI error recovery
11336  * @pdev: PCI device information struct
11337  *
11338  * Called to allow the driver to bring things back up after PCI error
11339  * and/or reset recovery has finished.
11340  **/
11341 static void i40e_pci_error_resume(struct pci_dev *pdev)
11342 {
11343         struct i40e_pf *pf = pci_get_drvdata(pdev);
11344
11345         dev_dbg(&pdev->dev, "%s\n", __func__);
11346         if (test_bit(__I40E_SUSPENDED, &pf->state))
11347                 return;
11348
11349         rtnl_lock();
11350         i40e_handle_reset_warning(pf);
11351         rtnl_unlock();
11352 }
11353
11354 /**
11355  * i40e_shutdown - PCI callback for shutting down
11356  * @pdev: PCI device information struct
11357  **/
11358 static void i40e_shutdown(struct pci_dev *pdev)
11359 {
11360         struct i40e_pf *pf = pci_get_drvdata(pdev);
11361         struct i40e_hw *hw = &pf->hw;
11362
11363         set_bit(__I40E_SUSPENDED, &pf->state);
11364         set_bit(__I40E_DOWN, &pf->state);
11365         rtnl_lock();
11366         i40e_prep_for_reset(pf);
11367         rtnl_unlock();
11368
11369         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11370         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11371
11372         del_timer_sync(&pf->service_timer);
11373         cancel_work_sync(&pf->service_task);
11374         i40e_fdir_teardown(pf);
11375
11376         rtnl_lock();
11377         i40e_prep_for_reset(pf);
11378         rtnl_unlock();
11379
11380         wr32(hw, I40E_PFPM_APM,
11381              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11382         wr32(hw, I40E_PFPM_WUFC,
11383              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11384
11385         i40e_clear_interrupt_scheme(pf);
11386
11387         if (system_state == SYSTEM_POWER_OFF) {
11388                 pci_wake_from_d3(pdev, pf->wol_en);
11389                 pci_set_power_state(pdev, PCI_D3hot);
11390         }
11391 }
11392
11393 #ifdef CONFIG_PM
11394 /**
11395  * i40e_suspend - PCI callback for moving to D3
11396  * @pdev: PCI device information struct
11397  **/
11398 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11399 {
11400         struct i40e_pf *pf = pci_get_drvdata(pdev);
11401         struct i40e_hw *hw = &pf->hw;
11402
11403         set_bit(__I40E_SUSPENDED, &pf->state);
11404         set_bit(__I40E_DOWN, &pf->state);
11405
11406         rtnl_lock();
11407         i40e_prep_for_reset(pf);
11408         rtnl_unlock();
11409
11410         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11411         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11412
11413         pci_wake_from_d3(pdev, pf->wol_en);
11414         pci_set_power_state(pdev, PCI_D3hot);
11415
11416         return 0;
11417 }
11418
11419 /**
11420  * i40e_resume - PCI callback for waking up from D3
11421  * @pdev: PCI device information struct
11422  **/
11423 static int i40e_resume(struct pci_dev *pdev)
11424 {
11425         struct i40e_pf *pf = pci_get_drvdata(pdev);
11426         u32 err;
11427
11428         pci_set_power_state(pdev, PCI_D0);
11429         pci_restore_state(pdev);
11430         /* pci_restore_state() clears dev->state_saves, so
11431          * call pci_save_state() again to restore it.
11432          */
11433         pci_save_state(pdev);
11434
11435         err = pci_enable_device_mem(pdev);
11436         if (err) {
11437                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11438                 return err;
11439         }
11440         pci_set_master(pdev);
11441
11442         /* no wakeup events while running */
11443         pci_wake_from_d3(pdev, false);
11444
11445         /* handling the reset will rebuild the device state */
11446         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11447                 clear_bit(__I40E_DOWN, &pf->state);
11448                 rtnl_lock();
11449                 i40e_reset_and_rebuild(pf, false);
11450                 rtnl_unlock();
11451         }
11452
11453         return 0;
11454 }
11455
11456 #endif
11457 static const struct pci_error_handlers i40e_err_handler = {
11458         .error_detected = i40e_pci_error_detected,
11459         .slot_reset = i40e_pci_error_slot_reset,
11460         .resume = i40e_pci_error_resume,
11461 };
11462
11463 static struct pci_driver i40e_driver = {
11464         .name     = i40e_driver_name,
11465         .id_table = i40e_pci_tbl,
11466         .probe    = i40e_probe,
11467         .remove   = i40e_remove,
11468 #ifdef CONFIG_PM
11469         .suspend  = i40e_suspend,
11470         .resume   = i40e_resume,
11471 #endif
11472         .shutdown = i40e_shutdown,
11473         .err_handler = &i40e_err_handler,
11474         .sriov_configure = i40e_pci_sriov_configure,
11475 };
11476
11477 /**
11478  * i40e_init_module - Driver registration routine
11479  *
11480  * i40e_init_module is the first routine called when the driver is
11481  * loaded. All it does is register with the PCI subsystem.
11482  **/
11483 static int __init i40e_init_module(void)
11484 {
11485         pr_info("%s: %s - version %s\n", i40e_driver_name,
11486                 i40e_driver_string, i40e_driver_version_str);
11487         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11488
11489         /* we will see if single thread per module is enough for now,
11490          * it can't be any worse than using the system workqueue which
11491          * was already single threaded
11492          */
11493         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11494         if (!i40e_wq) {
11495                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11496                 return -ENOMEM;
11497         }
11498
11499         i40e_dbg_init();
11500         return pci_register_driver(&i40e_driver);
11501 }
11502 module_init(i40e_init_module);
11503
11504 /**
11505  * i40e_exit_module - Driver exit cleanup routine
11506  *
11507  * i40e_exit_module is called just before the driver is removed
11508  * from memory.
11509  **/
11510 static void __exit i40e_exit_module(void)
11511 {
11512         pci_unregister_driver(&i40e_driver);
11513         destroy_workqueue(i40e_wq);
11514         i40e_dbg_exit();
11515 }
11516 module_exit(i40e_exit_module);