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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 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 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 16
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  89         /* required last entry */
  90         {0, }
  91 };
  92 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  93
  94 #define I40E_MAX_VF_COUNT 128
  95 static int debug = -1;
  96 module_param(debug, int, 0);
  97 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  98
  99 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 100 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 101 MODULE_LICENSE("GPL");
 102 MODULE_VERSION(DRV_VERSION);
 103
 104 static struct workqueue_struct *i40e_wq;
 105
 106 /**
 107  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 108  * @hw:   pointer to the HW structure
 109  * @mem:  ptr to mem struct to fill out
 110  * @size: size of memory requested
 111  * @alignment: what to align the allocation to
 112  **/
 113 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 114                             u64 size, u32 alignment)
 115 {
 116         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 117
 118         mem->size = ALIGN(size, alignment);
 119         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 120                                       &mem->pa, GFP_KERNEL);
 121         if (!mem->va)
 122                 return -ENOMEM;
 123
 124         return 0;
 125 }
 126
 127 /**
 128  * i40e_free_dma_mem_d - OS specific memory free for shared code
 129  * @hw:   pointer to the HW structure
 130  * @mem:  ptr to mem struct to free
 131  **/
 132 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 133 {
 134         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 135
 136         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 137         mem->va = NULL;
 138         mem->pa = 0;
 139         mem->size = 0;
 140
 141         return 0;
 142 }
 143
 144 /**
 145  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 146  * @hw:   pointer to the HW structure
 147  * @mem:  ptr to mem struct to fill out
 148  * @size: size of memory requested
 149  **/
 150 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 151                              u32 size)
 152 {
 153         mem->size = size;
 154         mem->va = kzalloc(size, GFP_KERNEL);
 155
 156         if (!mem->va)
 157                 return -ENOMEM;
 158
 159         return 0;
 160 }
 161
 162 /**
 163  * i40e_free_virt_mem_d - OS specific memory free for shared code
 164  * @hw:   pointer to the HW structure
 165  * @mem:  ptr to mem struct to free
 166  **/
 167 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 168 {
 169         /* it's ok to kfree a NULL pointer */
 170         kfree(mem->va);
 171         mem->va = NULL;
 172         mem->size = 0;
 173
 174         return 0;
 175 }
 176
 177 /**
 178  * i40e_get_lump - find a lump of free generic resource
 179  * @pf: board private structure
 180  * @pile: the pile of resource to search
 181  * @needed: the number of items needed
 182  * @id: an owner id to stick on the items assigned
 183  *
 184  * Returns the base item index of the lump, or negative for error
 185  *
 186  * The search_hint trick and lack of advanced fit-finding only work
 187  * because we're highly likely to have all the same size lump requests.
 188  * Linear search time and any fragmentation should be minimal.
 189  **/
 190 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 191                          u16 needed, u16 id)
 192 {
 193         int ret = -ENOMEM;
 194         int i, j;
 195
 196         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 197                 dev_info(&pf->pdev->dev,
 198                          "param err: pile=%p needed=%d id=0x%04x\n",
 199                          pile, needed, id);
 200                 return -EINVAL;
 201         }
 202
 203         /* start the linear search with an imperfect hint */
 204         i = pile->search_hint;
 205         while (i < pile->num_entries) {
 206                 /* skip already allocated entries */
 207                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 208                         i++;
 209                         continue;
 210                 }
 211
 212                 /* do we have enough in this lump? */
 213                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 214                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 215                                 break;
 216                 }
 217
 218                 if (j == needed) {
 219                         /* there was enough, so assign it to the requestor */
 220                         for (j = 0; j < needed; j++)
 221                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 222                         ret = i;
 223                         pile->search_hint = i + j;
 224                         break;
 225                 }
 226
 227                 /* not enough, so skip over it and continue looking */
 228                 i += j;
 229         }
 230
 231         return ret;
 232 }
 233
 234 /**
 235  * i40e_put_lump - return a lump of generic resource
 236  * @pile: the pile of resource to search
 237  * @index: the base item index
 238  * @id: the owner id of the items assigned
 239  *
 240  * Returns the count of items in the lump
 241  **/
 242 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 243 {
 244         int valid_id = (id | I40E_PILE_VALID_BIT);
 245         int count = 0;
 246         int i;
 247
 248         if (!pile || index >= pile->num_entries)
 249                 return -EINVAL;
 250
 251         for (i = index;
 252              i < pile->num_entries && pile->list[i] == valid_id;
 253              i++) {
 254                 pile->list[i] = 0;
 255                 count++;
 256         }
 257
 258         if (count && index < pile->search_hint)
 259                 pile->search_hint = index;
 260
 261         return count;
 262 }
 263
 264 /**
 265  * i40e_find_vsi_from_id - searches for the vsi with the given id
 266  * @pf - the pf structure to search for the vsi
 267  * @id - id of the vsi it is searching for
 268  **/
 269 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 270 {
 271         int i;
 272
 273         for (i = 0; i < pf->num_alloc_vsi; i++)
 274                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 275                         return pf->vsi[i];
 276
 277         return NULL;
 278 }
 279
 280 /**
 281  * i40e_service_event_schedule - Schedule the service task to wake up
 282  * @pf: board private structure
 283  *
 284  * If not already scheduled, this puts the task into the work queue
 285  **/
 286 void i40e_service_event_schedule(struct i40e_pf *pf)
 287 {
 288         if (!test_bit(__I40E_DOWN, &pf->state) &&
 289             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 290             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 291                 queue_work(i40e_wq, &pf->service_task);
 292 }
 293
 294 /**
 295  * i40e_tx_timeout - Respond to a Tx Hang
 296  * @netdev: network interface device structure
 297  *
 298  * If any port has noticed a Tx timeout, it is likely that the whole
 299  * device is munged, not just the one netdev port, so go for the full
 300  * reset.
 301  **/
 302 #ifdef I40E_FCOE
 303 void i40e_tx_timeout(struct net_device *netdev)
 304 #else
 305 static void i40e_tx_timeout(struct net_device *netdev)
 306 #endif
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_vsi *vsi = np->vsi;
 310         struct i40e_pf *pf = vsi->back;
 311         struct i40e_ring *tx_ring = NULL;
 312         unsigned int i, hung_queue = 0;
 313         u32 head, val;
 314
 315         pf->tx_timeout_count++;
 316
 317         /* find the stopped queue the same way the stack does */
 318         for (i = 0; i < netdev->num_tx_queues; i++) {
 319                 struct netdev_queue *q;
 320                 unsigned long trans_start;
 321
 322                 q = netdev_get_tx_queue(netdev, i);
 323                 trans_start = q->trans_start;
 324                 if (netif_xmit_stopped(q) &&
 325                     time_after(jiffies,
 326                                (trans_start + netdev->watchdog_timeo))) {
 327                         hung_queue = i;
 328                         break;
 329                 }
 330         }
 331
 332         if (i == netdev->num_tx_queues) {
 333                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 334         } else {
 335                 /* now that we have an index, find the tx_ring struct */
 336                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 337                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 338                                 if (hung_queue ==
 339                                     vsi->tx_rings[i]->queue_index) {
 340                                         tx_ring = vsi->tx_rings[i];
 341                                         break;
 342                                 }
 343                         }
 344                 }
 345         }
 346
 347         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 348                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 349         else if (time_before(jiffies,
 350                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 351                 return;   /* don't do any new action before the next timeout */
 352
 353         if (tx_ring) {
 354                 head = i40e_get_head(tx_ring);
 355                 /* Read interrupt register */
 356                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 357                         val = rd32(&pf->hw,
 358                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 359                                                 tx_ring->vsi->base_vector - 1));
 360                 else
 361                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 362
 363                 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",
 364                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 365                             head, tx_ring->next_to_use,
 366                             readl(tx_ring->tail), val);
 367         }
 368
 369         pf->tx_timeout_last_recovery = jiffies;
 370         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 371                     pf->tx_timeout_recovery_level, hung_queue);
 372
 373         switch (pf->tx_timeout_recovery_level) {
 374         case 1:
 375                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 376                 break;
 377         case 2:
 378                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 3:
 381                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 382                 break;
 383         default:
 384                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 385                 break;
 386         }
 387
 388         i40e_service_event_schedule(pf);
 389         pf->tx_timeout_recovery_level++;
 390 }
 391
 392 /**
 393  * i40e_get_vsi_stats_struct - Get System Network Statistics
 394  * @vsi: the VSI we care about
 395  *
 396  * Returns the address of the device statistics structure.
 397  * The statistics are actually updated from the service task.
 398  **/
 399 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 400 {
 401         return &vsi->net_stats;
 402 }
 403
 404 /**
 405  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 406  * @netdev: network interface device structure
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 #ifdef I40E_FCOE
 412 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 413                                              struct net_device *netdev,
 414                                              struct rtnl_link_stats64 *stats)
 415 #else
 416 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 417                                              struct net_device *netdev,
 418                                              struct rtnl_link_stats64 *stats)
 419 #endif
 420 {
 421         struct i40e_netdev_priv *np = netdev_priv(netdev);
 422         struct i40e_ring *tx_ring, *rx_ring;
 423         struct i40e_vsi *vsi = np->vsi;
 424         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 425         int i;
 426
 427         if (test_bit(__I40E_DOWN, &vsi->state))
 428                 return stats;
 429
 430         if (!vsi->tx_rings)
 431                 return stats;
 432
 433         rcu_read_lock();
 434         for (i = 0; i < vsi->num_queue_pairs; i++) {
 435                 u64 bytes, packets;
 436                 unsigned int start;
 437
 438                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 439                 if (!tx_ring)
 440                         continue;
 441
 442                 do {
 443                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 444                         packets = tx_ring->stats.packets;
 445                         bytes   = tx_ring->stats.bytes;
 446                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 447
 448                 stats->tx_packets += packets;
 449                 stats->tx_bytes   += bytes;
 450                 rx_ring = &tx_ring[1];
 451
 452                 do {
 453                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 454                         packets = rx_ring->stats.packets;
 455                         bytes   = rx_ring->stats.bytes;
 456                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 457
 458                 stats->rx_packets += packets;
 459                 stats->rx_bytes   += bytes;
 460         }
 461         rcu_read_unlock();
 462
 463         /* following stats updated by i40e_watchdog_subtask() */
 464         stats->multicast        = vsi_stats->multicast;
 465         stats->tx_errors        = vsi_stats->tx_errors;
 466         stats->tx_dropped       = vsi_stats->tx_dropped;
 467         stats->rx_errors        = vsi_stats->rx_errors;
 468         stats->rx_dropped       = vsi_stats->rx_dropped;
 469         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 470         stats->rx_length_errors = vsi_stats->rx_length_errors;
 471
 472         return stats;
 473 }
 474
 475 /**
 476  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 477  * @vsi: the VSI to have its stats reset
 478  **/
 479 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 480 {
 481         struct rtnl_link_stats64 *ns;
 482         int i;
 483
 484         if (!vsi)
 485                 return;
 486
 487         ns = i40e_get_vsi_stats_struct(vsi);
 488         memset(ns, 0, sizeof(*ns));
 489         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 490         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 491         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 492         if (vsi->rx_rings && vsi->rx_rings[0]) {
 493                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 494                         memset(&vsi->rx_rings[i]->stats, 0,
 495                                sizeof(vsi->rx_rings[i]->stats));
 496                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 497                                sizeof(vsi->rx_rings[i]->rx_stats));
 498                         memset(&vsi->tx_rings[i]->stats, 0,
 499                                sizeof(vsi->tx_rings[i]->stats));
 500                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 501                                sizeof(vsi->tx_rings[i]->tx_stats));
 502                 }
 503         }
 504         vsi->stat_offsets_loaded = false;
 505 }
 506
 507 /**
 508  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 509  * @pf: the PF to be reset
 510  **/
 511 void i40e_pf_reset_stats(struct i40e_pf *pf)
 512 {
 513         int i;
 514
 515         memset(&pf->stats, 0, sizeof(pf->stats));
 516         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 517         pf->stat_offsets_loaded = false;
 518
 519         for (i = 0; i < I40E_MAX_VEB; i++) {
 520                 if (pf->veb[i]) {
 521                         memset(&pf->veb[i]->stats, 0,
 522                                sizeof(pf->veb[i]->stats));
 523                         memset(&pf->veb[i]->stats_offsets, 0,
 524                                sizeof(pf->veb[i]->stats_offsets));
 525                         pf->veb[i]->stat_offsets_loaded = false;
 526                 }
 527         }
 528         pf->hw_csum_rx_error = 0;
 529 }
 530
 531 /**
 532  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 533  * @hw: ptr to the hardware info
 534  * @hireg: the high 32 bit reg to read
 535  * @loreg: the low 32 bit reg to read
 536  * @offset_loaded: has the initial offset been loaded yet
 537  * @offset: ptr to current offset value
 538  * @stat: ptr to the stat
 539  *
 540  * Since the device stats are not reset at PFReset, they likely will not
 541  * be zeroed when the driver starts.  We'll save the first values read
 542  * and use them as offsets to be subtracted from the raw values in order
 543  * to report stats that count from zero.  In the process, we also manage
 544  * the potential roll-over.
 545  **/
 546 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 547                                bool offset_loaded, u64 *offset, u64 *stat)
 548 {
 549         u64 new_data;
 550
 551         if (hw->device_id == I40E_DEV_ID_QEMU) {
 552                 new_data = rd32(hw, loreg);
 553                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 554         } else {
 555                 new_data = rd64(hw, loreg);
 556         }
 557         if (!offset_loaded)
 558                 *offset = new_data;
 559         if (likely(new_data >= *offset))
 560                 *stat = new_data - *offset;
 561         else
 562                 *stat = (new_data + BIT_ULL(48)) - *offset;
 563         *stat &= 0xFFFFFFFFFFFFULL;
 564 }
 565
 566 /**
 567  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 568  * @hw: ptr to the hardware info
 569  * @reg: the hw reg to read
 570  * @offset_loaded: has the initial offset been loaded yet
 571  * @offset: ptr to current offset value
 572  * @stat: ptr to the stat
 573  **/
 574 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 575                                bool offset_loaded, u64 *offset, u64 *stat)
 576 {
 577         u32 new_data;
 578
 579         new_data = rd32(hw, reg);
 580         if (!offset_loaded)
 581                 *offset = new_data;
 582         if (likely(new_data >= *offset))
 583                 *stat = (u32)(new_data - *offset);
 584         else
 585                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 586 }
 587
 588 /**
 589  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 590  * @vsi: the VSI to be updated
 591  **/
 592 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 593 {
 594         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 595         struct i40e_pf *pf = vsi->back;
 596         struct i40e_hw *hw = &pf->hw;
 597         struct i40e_eth_stats *oes;
 598         struct i40e_eth_stats *es;     /* device's eth stats */
 599
 600         es = &vsi->eth_stats;
 601         oes = &vsi->eth_stats_offsets;
 602
 603         /* Gather up the stats that the hw collects */
 604         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 605                            vsi->stat_offsets_loaded,
 606                            &oes->tx_errors, &es->tx_errors);
 607         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->rx_discards, &es->rx_discards);
 610         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 611                            vsi->stat_offsets_loaded,
 612                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 613         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 614                            vsi->stat_offsets_loaded,
 615                            &oes->tx_errors, &es->tx_errors);
 616
 617         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 618                            I40E_GLV_GORCL(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_bytes, &es->rx_bytes);
 621         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 622                            I40E_GLV_UPRCL(stat_idx),
 623                            vsi->stat_offsets_loaded,
 624                            &oes->rx_unicast, &es->rx_unicast);
 625         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 626                            I40E_GLV_MPRCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_multicast, &es->rx_multicast);
 629         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 630                            I40E_GLV_BPRCL(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_broadcast, &es->rx_broadcast);
 633
 634         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 635                            I40E_GLV_GOTCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 639                            I40E_GLV_UPTCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->tx_unicast, &es->tx_unicast);
 642         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 643                            I40E_GLV_MPTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_multicast, &es->tx_multicast);
 646         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 647                            I40E_GLV_BPTCL(stat_idx),
 648                            vsi->stat_offsets_loaded,
 649                            &oes->tx_broadcast, &es->tx_broadcast);
 650         vsi->stat_offsets_loaded = true;
 651 }
 652
 653 /**
 654  * i40e_update_veb_stats - Update Switch component statistics
 655  * @veb: the VEB being updated
 656  **/
 657 static void i40e_update_veb_stats(struct i40e_veb *veb)
 658 {
 659         struct i40e_pf *pf = veb->pf;
 660         struct i40e_hw *hw = &pf->hw;
 661         struct i40e_eth_stats *oes;
 662         struct i40e_eth_stats *es;     /* device's eth stats */
 663         struct i40e_veb_tc_stats *veb_oes;
 664         struct i40e_veb_tc_stats *veb_es;
 665         int i, idx = 0;
 666
 667         idx = veb->stats_idx;
 668         es = &veb->stats;
 669         oes = &veb->stats_offsets;
 670         veb_es = &veb->tc_stats;
 671         veb_oes = &veb->tc_stats_offsets;
 672
 673         /* Gather up the stats that the hw collects */
 674         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 675                            veb->stat_offsets_loaded,
 676                            &oes->tx_discards, &es->tx_discards);
 677         if (hw->revision_id > 0)
 678                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 679                                    veb->stat_offsets_loaded,
 680                                    &oes->rx_unknown_protocol,
 681                                    &es->rx_unknown_protocol);
 682         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 683                            veb->stat_offsets_loaded,
 684                            &oes->rx_bytes, &es->rx_bytes);
 685         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->rx_unicast, &es->rx_unicast);
 688         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 689                            veb->stat_offsets_loaded,
 690                            &oes->rx_multicast, &es->rx_multicast);
 691         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 692                            veb->stat_offsets_loaded,
 693                            &oes->rx_broadcast, &es->rx_broadcast);
 694
 695         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->tx_bytes, &es->tx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->tx_unicast, &es->tx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->tx_multicast, &es->tx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->tx_broadcast, &es->tx_broadcast);
 707         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 708                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 709                                    I40E_GLVEBTC_RPCL(i, idx),
 710                                    veb->stat_offsets_loaded,
 711                                    &veb_oes->tc_rx_packets[i],
 712                                    &veb_es->tc_rx_packets[i]);
 713                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 714                                    I40E_GLVEBTC_RBCL(i, idx),
 715                                    veb->stat_offsets_loaded,
 716                                    &veb_oes->tc_rx_bytes[i],
 717                                    &veb_es->tc_rx_bytes[i]);
 718                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 719                                    I40E_GLVEBTC_TPCL(i, idx),
 720                                    veb->stat_offsets_loaded,
 721                                    &veb_oes->tc_tx_packets[i],
 722                                    &veb_es->tc_tx_packets[i]);
 723                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 724                                    I40E_GLVEBTC_TBCL(i, idx),
 725                                    veb->stat_offsets_loaded,
 726                                    &veb_oes->tc_tx_bytes[i],
 727                                    &veb_es->tc_tx_bytes[i]);
 728         }
 729         veb->stat_offsets_loaded = true;
 730 }
 731
 732 #ifdef I40E_FCOE
 733 /**
 734  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 735  * @vsi: the VSI that is capable of doing FCoE
 736  **/
 737 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 738 {
 739         struct i40e_pf *pf = vsi->back;
 740         struct i40e_hw *hw = &pf->hw;
 741         struct i40e_fcoe_stats *ofs;
 742         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 743         int idx;
 744
 745         if (vsi->type != I40E_VSI_FCOE)
 746                 return;
 747
 748         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 749         fs = &vsi->fcoe_stats;
 750         ofs = &vsi->fcoe_stats_offsets;
 751
 752         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 753                            vsi->fcoe_stat_offsets_loaded,
 754                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 755         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 756                            vsi->fcoe_stat_offsets_loaded,
 757                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 758         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 759                            vsi->fcoe_stat_offsets_loaded,
 760                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 761         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 762                            vsi->fcoe_stat_offsets_loaded,
 763                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 764         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 765                            vsi->fcoe_stat_offsets_loaded,
 766                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 767         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 768                            vsi->fcoe_stat_offsets_loaded,
 769                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 770         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 771                            vsi->fcoe_stat_offsets_loaded,
 772                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 773         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 774                            vsi->fcoe_stat_offsets_loaded,
 775                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 776
 777         vsi->fcoe_stat_offsets_loaded = true;
 778 }
 779
 780 #endif
 781 /**
 782  * i40e_update_vsi_stats - Update the vsi statistics counters.
 783  * @vsi: the VSI to be updated
 784  *
 785  * There are a few instances where we store the same stat in a
 786  * couple of different structs.  This is partly because we have
 787  * the netdev stats that need to be filled out, which is slightly
 788  * different from the "eth_stats" defined by the chip and used in
 789  * VF communications.  We sort it out here.
 790  **/
 791 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 792 {
 793         struct i40e_pf *pf = vsi->back;
 794         struct rtnl_link_stats64 *ons;
 795         struct rtnl_link_stats64 *ns;   /* netdev stats */
 796         struct i40e_eth_stats *oes;
 797         struct i40e_eth_stats *es;     /* device's eth stats */
 798         u32 tx_restart, tx_busy;
 799         u64 tx_lost_interrupt;
 800         struct i40e_ring *p;
 801         u32 rx_page, rx_buf;
 802         u64 bytes, packets;
 803         unsigned int start;
 804         u64 tx_linearize;
 805         u64 tx_force_wb;
 806         u64 rx_p, rx_b;
 807         u64 tx_p, tx_b;
 808         u16 q;
 809
 810         if (test_bit(__I40E_DOWN, &vsi->state) ||
 811             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 812                 return;
 813
 814         ns = i40e_get_vsi_stats_struct(vsi);
 815         ons = &vsi->net_stats_offsets;
 816         es = &vsi->eth_stats;
 817         oes = &vsi->eth_stats_offsets;
 818
 819         /* Gather up the netdev and vsi stats that the driver collects
 820          * on the fly during packet processing
 821          */
 822         rx_b = rx_p = 0;
 823         tx_b = tx_p = 0;
 824         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 825         tx_lost_interrupt = 0;
 826         rx_page = 0;
 827         rx_buf = 0;
 828         rcu_read_lock();
 829         for (q = 0; q < vsi->num_queue_pairs; q++) {
 830                 /* locate Tx ring */
 831                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 832
 833                 do {
 834                         start = u64_stats_fetch_begin_irq(&p->syncp);
 835                         packets = p->stats.packets;
 836                         bytes = p->stats.bytes;
 837                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 838                 tx_b += bytes;
 839                 tx_p += packets;
 840                 tx_restart += p->tx_stats.restart_queue;
 841                 tx_busy += p->tx_stats.tx_busy;
 842                 tx_linearize += p->tx_stats.tx_linearize;
 843                 tx_force_wb += p->tx_stats.tx_force_wb;
 844                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 845
 846                 /* Rx queue is part of the same block as Tx queue */
 847                 p = &p[1];
 848                 do {
 849                         start = u64_stats_fetch_begin_irq(&p->syncp);
 850                         packets = p->stats.packets;
 851                         bytes = p->stats.bytes;
 852                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 853                 rx_b += bytes;
 854                 rx_p += packets;
 855                 rx_buf += p->rx_stats.alloc_buff_failed;
 856                 rx_page += p->rx_stats.alloc_page_failed;
 857         }
 858         rcu_read_unlock();
 859         vsi->tx_restart = tx_restart;
 860         vsi->tx_busy = tx_busy;
 861         vsi->tx_linearize = tx_linearize;
 862         vsi->tx_force_wb = tx_force_wb;
 863         vsi->tx_lost_interrupt = tx_lost_interrupt;
 864         vsi->rx_page_failed = rx_page;
 865         vsi->rx_buf_failed = rx_buf;
 866
 867         ns->rx_packets = rx_p;
 868         ns->rx_bytes = rx_b;
 869         ns->tx_packets = tx_p;
 870         ns->tx_bytes = tx_b;
 871
 872         /* update netdev stats from eth stats */
 873         i40e_update_eth_stats(vsi);
 874         ons->tx_errors = oes->tx_errors;
 875         ns->tx_errors = es->tx_errors;
 876         ons->multicast = oes->rx_multicast;
 877         ns->multicast = es->rx_multicast;
 878         ons->rx_dropped = oes->rx_discards;
 879         ns->rx_dropped = es->rx_discards;
 880         ons->tx_dropped = oes->tx_discards;
 881         ns->tx_dropped = es->tx_discards;
 882
 883         /* pull in a couple PF stats if this is the main vsi */
 884         if (vsi == pf->vsi[pf->lan_vsi]) {
 885                 ns->rx_crc_errors = pf->stats.crc_errors;
 886                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 887                 ns->rx_length_errors = pf->stats.rx_length_errors;
 888         }
 889 }
 890
 891 /**
 892  * i40e_update_pf_stats - Update the PF statistics counters.
 893  * @pf: the PF to be updated
 894  **/
 895 static void i40e_update_pf_stats(struct i40e_pf *pf)
 896 {
 897         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 898         struct i40e_hw_port_stats *nsd = &pf->stats;
 899         struct i40e_hw *hw = &pf->hw;
 900         u32 val;
 901         int i;
 902
 903         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 904                            I40E_GLPRT_GORCL(hw->port),
 905                            pf->stat_offsets_loaded,
 906                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 907         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 908                            I40E_GLPRT_GOTCL(hw->port),
 909                            pf->stat_offsets_loaded,
 910                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 911         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_discards,
 914                            &nsd->eth.rx_discards);
 915         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 916                            I40E_GLPRT_UPRCL(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->eth.rx_unicast,
 919                            &nsd->eth.rx_unicast);
 920         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 921                            I40E_GLPRT_MPRCL(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->eth.rx_multicast,
 924                            &nsd->eth.rx_multicast);
 925         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 926                            I40E_GLPRT_BPRCL(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->eth.rx_broadcast,
 929                            &nsd->eth.rx_broadcast);
 930         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 931                            I40E_GLPRT_UPTCL(hw->port),
 932                            pf->stat_offsets_loaded,
 933                            &osd->eth.tx_unicast,
 934                            &nsd->eth.tx_unicast);
 935         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 936                            I40E_GLPRT_MPTCL(hw->port),
 937                            pf->stat_offsets_loaded,
 938                            &osd->eth.tx_multicast,
 939                            &nsd->eth.tx_multicast);
 940         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 941                            I40E_GLPRT_BPTCL(hw->port),
 942                            pf->stat_offsets_loaded,
 943                            &osd->eth.tx_broadcast,
 944                            &nsd->eth.tx_broadcast);
 945
 946         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 947                            pf->stat_offsets_loaded,
 948                            &osd->tx_dropped_link_down,
 949                            &nsd->tx_dropped_link_down);
 950
 951         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 952                            pf->stat_offsets_loaded,
 953                            &osd->crc_errors, &nsd->crc_errors);
 954
 955         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->illegal_bytes, &nsd->illegal_bytes);
 958
 959         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 960                            pf->stat_offsets_loaded,
 961                            &osd->mac_local_faults,
 962                            &nsd->mac_local_faults);
 963         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->mac_remote_faults,
 966                            &nsd->mac_remote_faults);
 967
 968         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->rx_length_errors,
 971                            &nsd->rx_length_errors);
 972
 973         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->link_xon_rx, &nsd->link_xon_rx);
 976         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->link_xon_tx, &nsd->link_xon_tx);
 979         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 982         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 985
 986         for (i = 0; i < 8; i++) {
 987                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 988                                    pf->stat_offsets_loaded,
 989                                    &osd->priority_xoff_rx[i],
 990                                    &nsd->priority_xoff_rx[i]);
 991                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 992                                    pf->stat_offsets_loaded,
 993                                    &osd->priority_xon_rx[i],
 994                                    &nsd->priority_xon_rx[i]);
 995                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 996                                    pf->stat_offsets_loaded,
 997                                    &osd->priority_xon_tx[i],
 998                                    &nsd->priority_xon_tx[i]);
 999                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1000                                    pf->stat_offsets_loaded,
1001                                    &osd->priority_xoff_tx[i],
1002                                    &nsd->priority_xoff_tx[i]);
1003                 i40e_stat_update32(hw,
1004                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1005                                    pf->stat_offsets_loaded,
1006                                    &osd->priority_xon_2_xoff[i],
1007                                    &nsd->priority_xon_2_xoff[i]);
1008         }
1009
1010         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1011                            I40E_GLPRT_PRC64L(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->rx_size_64, &nsd->rx_size_64);
1014         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1015                            I40E_GLPRT_PRC127L(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->rx_size_127, &nsd->rx_size_127);
1018         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1019                            I40E_GLPRT_PRC255L(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->rx_size_255, &nsd->rx_size_255);
1022         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1023                            I40E_GLPRT_PRC511L(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->rx_size_511, &nsd->rx_size_511);
1026         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1027                            I40E_GLPRT_PRC1023L(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->rx_size_1023, &nsd->rx_size_1023);
1030         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1031                            I40E_GLPRT_PRC1522L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->rx_size_1522, &nsd->rx_size_1522);
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1035                            I40E_GLPRT_PRC9522L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_big, &nsd->rx_size_big);
1038
1039         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1040                            I40E_GLPRT_PTC64L(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->tx_size_64, &nsd->tx_size_64);
1043         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1044                            I40E_GLPRT_PTC127L(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->tx_size_127, &nsd->tx_size_127);
1047         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1048                            I40E_GLPRT_PTC255L(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->tx_size_255, &nsd->tx_size_255);
1051         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1052                            I40E_GLPRT_PTC511L(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->tx_size_511, &nsd->tx_size_511);
1055         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1056                            I40E_GLPRT_PTC1023L(hw->port),
1057                            pf->stat_offsets_loaded,
1058                            &osd->tx_size_1023, &nsd->tx_size_1023);
1059         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1060                            I40E_GLPRT_PTC1522L(hw->port),
1061                            pf->stat_offsets_loaded,
1062                            &osd->tx_size_1522, &nsd->tx_size_1522);
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1064                            I40E_GLPRT_PTC9522L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_big, &nsd->tx_size_big);
1067
1068         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->rx_undersize, &nsd->rx_undersize);
1071         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->rx_fragments, &nsd->rx_fragments);
1074         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_oversize, &nsd->rx_oversize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_jabber, &nsd->rx_jabber);
1080
1081         /* FDIR stats */
1082         i40e_stat_update32(hw,
1083                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1084                            pf->stat_offsets_loaded,
1085                            &osd->fd_atr_match, &nsd->fd_atr_match);
1086         i40e_stat_update32(hw,
1087                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1088                            pf->stat_offsets_loaded,
1089                            &osd->fd_sb_match, &nsd->fd_sb_match);
1090         i40e_stat_update32(hw,
1091                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1092                       pf->stat_offsets_loaded,
1093                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1110             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1111                 nsd->fd_sb_status = true;
1112         else
1113                 nsd->fd_sb_status = false;
1114
1115         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1116             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1117                 nsd->fd_atr_status = true;
1118         else
1119                 nsd->fd_atr_status = false;
1120
1121         pf->stat_offsets_loaded = true;
1122 }
1123
1124 /**
1125  * i40e_update_stats - Update the various statistics counters.
1126  * @vsi: the VSI to be updated
1127  *
1128  * Update the various stats for this VSI and its related entities.
1129  **/
1130 void i40e_update_stats(struct i40e_vsi *vsi)
1131 {
1132         struct i40e_pf *pf = vsi->back;
1133
1134         if (vsi == pf->vsi[pf->lan_vsi])
1135                 i40e_update_pf_stats(pf);
1136
1137         i40e_update_vsi_stats(vsi);
1138 #ifdef I40E_FCOE
1139         i40e_update_fcoe_stats(vsi);
1140 #endif
1141 }
1142
1143 /**
1144  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1145  * @vsi: the VSI to be searched
1146  * @macaddr: the MAC address
1147  * @vlan: the vlan
1148  * @is_vf: make sure its a VF filter, else doesn't matter
1149  * @is_netdev: make sure its a netdev filter, else doesn't matter
1150  *
1151  * Returns ptr to the filter object or NULL
1152  **/
1153 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1154                                                 u8 *macaddr, s16 vlan,
1155                                                 bool is_vf, bool is_netdev)
1156 {
1157         struct i40e_mac_filter *f;
1158
1159         if (!vsi || !macaddr)
1160                 return NULL;
1161
1162         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1163                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1164                     (vlan == f->vlan)    &&
1165                     (!is_vf || f->is_vf) &&
1166                     (!is_netdev || f->is_netdev))
1167                         return f;
1168         }
1169         return NULL;
1170 }
1171
1172 /**
1173  * i40e_find_mac - Find a mac addr in the macvlan filters list
1174  * @vsi: the VSI to be searched
1175  * @macaddr: the MAC address we are searching for
1176  * @is_vf: make sure its a VF filter, else doesn't matter
1177  * @is_netdev: make sure its a netdev filter, else doesn't matter
1178  *
1179  * Returns the first filter with the provided MAC address or NULL if
1180  * MAC address was not found
1181  **/
1182 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1183                                       bool is_vf, bool is_netdev)
1184 {
1185         struct i40e_mac_filter *f;
1186
1187         if (!vsi || !macaddr)
1188                 return NULL;
1189
1190         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1191                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1192                     (!is_vf || f->is_vf) &&
1193                     (!is_netdev || f->is_netdev))
1194                         return f;
1195         }
1196         return NULL;
1197 }
1198
1199 /**
1200  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1201  * @vsi: the VSI to be searched
1202  *
1203  * Returns true if VSI is in vlan mode or false otherwise
1204  **/
1205 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1206 {
1207         struct i40e_mac_filter *f;
1208
1209         /* Only -1 for all the filters denotes not in vlan mode
1210          * so we have to go through all the list in order to make sure
1211          */
1212         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1213                 if (f->vlan >= 0 || vsi->info.pvid)
1214                         return true;
1215         }
1216
1217         return false;
1218 }
1219
1220 /**
1221  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1222  * @vsi: the VSI to be searched
1223  * @macaddr: the mac address to be filtered
1224  * @is_vf: true if it is a VF
1225  * @is_netdev: true if it is a netdev
1226  *
1227  * Goes through all the macvlan filters and adds a
1228  * macvlan filter for each unique vlan that already exists
1229  *
1230  * Returns first filter found on success, else NULL
1231  **/
1232 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1233                                              bool is_vf, bool is_netdev)
1234 {
1235         struct i40e_mac_filter *f;
1236
1237         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1238                 if (vsi->info.pvid)
1239                         f->vlan = le16_to_cpu(vsi->info.pvid);
1240                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1241                                       is_vf, is_netdev)) {
1242                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1243                                              is_vf, is_netdev))
1244                                 return NULL;
1245                 }
1246         }
1247
1248         return list_first_entry_or_null(&vsi->mac_filter_list,
1249                                         struct i40e_mac_filter, list);
1250 }
1251
1252 /**
1253  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1254  * @vsi: the VSI to be searched
1255  * @macaddr: the mac address to be removed
1256  * @is_vf: true if it is a VF
1257  * @is_netdev: true if it is a netdev
1258  *
1259  * Removes a given MAC address from a VSI, regardless of VLAN
1260  *
1261  * Returns 0 for success, or error
1262  **/
1263 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1264                           bool is_vf, bool is_netdev)
1265 {
1266         struct i40e_mac_filter *f = NULL;
1267         int changed = 0;
1268
1269         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1270              "Missing mac_filter_list_lock\n");
1271         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1272                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1273                     (is_vf == f->is_vf) &&
1274                     (is_netdev == f->is_netdev)) {
1275                         f->counter--;
1276                         changed = 1;
1277                         if (f->counter == 0)
1278                                 f->state = I40E_FILTER_REMOVE;
1279                 }
1280         }
1281         if (changed) {
1282                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1283                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1284                 return 0;
1285         }
1286         return -ENOENT;
1287 }
1288
1289 /**
1290  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1291  * @vsi: the PF Main VSI - inappropriate for any other VSI
1292  * @macaddr: the MAC address
1293  *
1294  * Remove whatever filter the firmware set up so the driver can manage
1295  * its own filtering intelligently.
1296  **/
1297 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1298 {
1299         struct i40e_aqc_remove_macvlan_element_data element;
1300         struct i40e_pf *pf = vsi->back;
1301
1302         /* Only appropriate for the PF main VSI */
1303         if (vsi->type != I40E_VSI_MAIN)
1304                 return;
1305
1306         memset(&element, 0, sizeof(element));
1307         ether_addr_copy(element.mac_addr, macaddr);
1308         element.vlan_tag = 0;
1309         /* Ignore error returns, some firmware does it this way... */
1310         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1311         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1312
1313         memset(&element, 0, sizeof(element));
1314         ether_addr_copy(element.mac_addr, macaddr);
1315         element.vlan_tag = 0;
1316         /* ...and some firmware does it this way. */
1317         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1318                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1319         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1320 }
1321
1322 /**
1323  * i40e_add_filter - Add a mac/vlan filter to the VSI
1324  * @vsi: the VSI to be searched
1325  * @macaddr: the MAC address
1326  * @vlan: the vlan
1327  * @is_vf: make sure its a VF filter, else doesn't matter
1328  * @is_netdev: make sure its a netdev filter, else doesn't matter
1329  *
1330  * Returns ptr to the filter object or NULL when no memory available.
1331  *
1332  * NOTE: This function is expected to be called with mac_filter_list_lock
1333  * being held.
1334  **/
1335 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1336                                         u8 *macaddr, s16 vlan,
1337                                         bool is_vf, bool is_netdev)
1338 {
1339         struct i40e_mac_filter *f;
1340         int changed = false;
1341
1342         if (!vsi || !macaddr)
1343                 return NULL;
1344
1345         /* Do not allow broadcast filter to be added since broadcast filter
1346          * is added as part of add VSI for any newly created VSI except
1347          * FDIR VSI
1348          */
1349         if (is_broadcast_ether_addr(macaddr))
1350                 return NULL;
1351
1352         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1353         if (!f) {
1354                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1355                 if (!f)
1356                         goto add_filter_out;
1357
1358                 ether_addr_copy(f->macaddr, macaddr);
1359                 f->vlan = vlan;
1360                 /* If we're in overflow promisc mode, set the state directly
1361                  * to failed, so we don't bother to try sending the filter
1362                  * to the hardware.
1363                  */
1364                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1365                         f->state = I40E_FILTER_FAILED;
1366                 else
1367                         f->state = I40E_FILTER_NEW;
1368                 changed = true;
1369                 INIT_LIST_HEAD(&f->list);
1370                 list_add_tail(&f->list, &vsi->mac_filter_list);
1371         }
1372
1373         /* increment counter and add a new flag if needed */
1374         if (is_vf) {
1375                 if (!f->is_vf) {
1376                         f->is_vf = true;
1377                         f->counter++;
1378                 }
1379         } else if (is_netdev) {
1380                 if (!f->is_netdev) {
1381                         f->is_netdev = true;
1382                         f->counter++;
1383                 }
1384         } else {
1385                 f->counter++;
1386         }
1387
1388         if (changed) {
1389                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1390                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1391         }
1392
1393 add_filter_out:
1394         return f;
1395 }
1396
1397 /**
1398  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1399  * @vsi: the VSI to be searched
1400  * @macaddr: the MAC address
1401  * @vlan: the vlan
1402  * @is_vf: make sure it's a VF filter, else doesn't matter
1403  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1404  *
1405  * NOTE: This function is expected to be called with mac_filter_list_lock
1406  * being held.
1407  * ANOTHER NOTE: This function MUST be called from within the context of
1408  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1409  * instead of list_for_each_entry().
1410  **/
1411 void i40e_del_filter(struct i40e_vsi *vsi,
1412                      u8 *macaddr, s16 vlan,
1413                      bool is_vf, bool is_netdev)
1414 {
1415         struct i40e_mac_filter *f;
1416
1417         if (!vsi || !macaddr)
1418                 return;
1419
1420         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1421         if (!f || f->counter == 0)
1422                 return;
1423
1424         if (is_vf) {
1425                 if (f->is_vf) {
1426                         f->is_vf = false;
1427                         f->counter--;
1428                 }
1429         } else if (is_netdev) {
1430                 if (f->is_netdev) {
1431                         f->is_netdev = false;
1432                         f->counter--;
1433                 }
1434         } else {
1435                 /* make sure we don't remove a filter in use by VF or netdev */
1436                 int min_f = 0;
1437
1438                 min_f += (f->is_vf ? 1 : 0);
1439                 min_f += (f->is_netdev ? 1 : 0);
1440
1441                 if (f->counter > min_f)
1442                         f->counter--;
1443         }
1444
1445         /* counter == 0 tells sync_filters_subtask to
1446          * remove the filter from the firmware's list
1447          */
1448         if (f->counter == 0) {
1449                 if ((f->state == I40E_FILTER_FAILED) ||
1450                     (f->state == I40E_FILTER_NEW)) {
1451                         /* this one never got added by the FW. Just remove it,
1452                          * no need to sync anything.
1453                          */
1454                         list_del(&f->list);
1455                         kfree(f);
1456                 } else {
1457                         f->state = I40E_FILTER_REMOVE;
1458                         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1459                         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1460                 }
1461         }
1462 }
1463
1464 /**
1465  * i40e_set_mac - NDO callback to set mac address
1466  * @netdev: network interface device structure
1467  * @p: pointer to an address structure
1468  *
1469  * Returns 0 on success, negative on failure
1470  **/
1471 #ifdef I40E_FCOE
1472 int i40e_set_mac(struct net_device *netdev, void *p)
1473 #else
1474 static int i40e_set_mac(struct net_device *netdev, void *p)
1475 #endif
1476 {
1477         struct i40e_netdev_priv *np = netdev_priv(netdev);
1478         struct i40e_vsi *vsi = np->vsi;
1479         struct i40e_pf *pf = vsi->back;
1480         struct i40e_hw *hw = &pf->hw;
1481         struct sockaddr *addr = p;
1482
1483         if (!is_valid_ether_addr(addr->sa_data))
1484                 return -EADDRNOTAVAIL;
1485
1486         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1487                 netdev_info(netdev, "already using mac address %pM\n",
1488                             addr->sa_data);
1489                 return 0;
1490         }
1491
1492         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1493             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1494                 return -EADDRNOTAVAIL;
1495
1496         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1497                 netdev_info(netdev, "returning to hw mac address %pM\n",
1498                             hw->mac.addr);
1499         else
1500                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1501
1502         spin_lock_bh(&vsi->mac_filter_list_lock);
1503         i40e_del_mac_all_vlan(vsi, netdev->dev_addr, false, true);
1504         i40e_put_mac_in_vlan(vsi, addr->sa_data, false, true);
1505         spin_unlock_bh(&vsi->mac_filter_list_lock);
1506         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1507         if (vsi->type == I40E_VSI_MAIN) {
1508                 i40e_status ret;
1509
1510                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1511                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1512                                                 addr->sa_data, NULL);
1513                 if (ret)
1514                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1515                                     i40e_stat_str(hw, ret),
1516                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1517         }
1518
1519         /* schedule our worker thread which will take care of
1520          * applying the new filter changes
1521          */
1522         i40e_service_event_schedule(vsi->back);
1523         return 0;
1524 }
1525
1526 /**
1527  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1528  * @vsi: the VSI being setup
1529  * @ctxt: VSI context structure
1530  * @enabled_tc: Enabled TCs bitmap
1531  * @is_add: True if called before Add VSI
1532  *
1533  * Setup VSI queue mapping for enabled traffic classes.
1534  **/
1535 #ifdef I40E_FCOE
1536 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1537                               struct i40e_vsi_context *ctxt,
1538                               u8 enabled_tc,
1539                               bool is_add)
1540 #else
1541 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1542                                      struct i40e_vsi_context *ctxt,
1543                                      u8 enabled_tc,
1544                                      bool is_add)
1545 #endif
1546 {
1547         struct i40e_pf *pf = vsi->back;
1548         u16 sections = 0;
1549         u8 netdev_tc = 0;
1550         u16 numtc = 0;
1551         u16 qcount;
1552         u8 offset;
1553         u16 qmap;
1554         int i;
1555         u16 num_tc_qps = 0;
1556
1557         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1558         offset = 0;
1559
1560         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1561                 /* Find numtc from enabled TC bitmap */
1562                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1563                         if (enabled_tc & BIT(i)) /* TC is enabled */
1564                                 numtc++;
1565                 }
1566                 if (!numtc) {
1567                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1568                         numtc = 1;
1569                 }
1570         } else {
1571                 /* At least TC0 is enabled in case of non-DCB case */
1572                 numtc = 1;
1573         }
1574
1575         vsi->tc_config.numtc = numtc;
1576         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1577         /* Number of queues per enabled TC */
1578         qcount = vsi->alloc_queue_pairs;
1579
1580         num_tc_qps = qcount / numtc;
1581         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1582
1583         /* Setup queue offset/count for all TCs for given VSI */
1584         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1585                 /* See if the given TC is enabled for the given VSI */
1586                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1587                         /* TC is enabled */
1588                         int pow, num_qps;
1589
1590                         switch (vsi->type) {
1591                         case I40E_VSI_MAIN:
1592                                 qcount = min_t(int, pf->alloc_rss_size,
1593                                                num_tc_qps);
1594                                 break;
1595 #ifdef I40E_FCOE
1596                         case I40E_VSI_FCOE:
1597                                 qcount = num_tc_qps;
1598                                 break;
1599 #endif
1600                         case I40E_VSI_FDIR:
1601                         case I40E_VSI_SRIOV:
1602                         case I40E_VSI_VMDQ2:
1603                         default:
1604                                 qcount = num_tc_qps;
1605                                 WARN_ON(i != 0);
1606                                 break;
1607                         }
1608                         vsi->tc_config.tc_info[i].qoffset = offset;
1609                         vsi->tc_config.tc_info[i].qcount = qcount;
1610
1611                         /* find the next higher power-of-2 of num queue pairs */
1612                         num_qps = qcount;
1613                         pow = 0;
1614                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1615                                 pow++;
1616                                 num_qps >>= 1;
1617                         }
1618
1619                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1620                         qmap =
1621                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1622                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1623
1624                         offset += qcount;
1625                 } else {
1626                         /* TC is not enabled so set the offset to
1627                          * default queue and allocate one queue
1628                          * for the given TC.
1629                          */
1630                         vsi->tc_config.tc_info[i].qoffset = 0;
1631                         vsi->tc_config.tc_info[i].qcount = 1;
1632                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1633
1634                         qmap = 0;
1635                 }
1636                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1637         }
1638
1639         /* Set actual Tx/Rx queue pairs */
1640         vsi->num_queue_pairs = offset;
1641         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1642                 if (vsi->req_queue_pairs > 0)
1643                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1644                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1645                         vsi->num_queue_pairs = pf->num_lan_msix;
1646         }
1647
1648         /* Scheduler section valid can only be set for ADD VSI */
1649         if (is_add) {
1650                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1651
1652                 ctxt->info.up_enable_bits = enabled_tc;
1653         }
1654         if (vsi->type == I40E_VSI_SRIOV) {
1655                 ctxt->info.mapping_flags |=
1656                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1657                 for (i = 0; i < vsi->num_queue_pairs; i++)
1658                         ctxt->info.queue_mapping[i] =
1659                                                cpu_to_le16(vsi->base_queue + i);
1660         } else {
1661                 ctxt->info.mapping_flags |=
1662                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1663                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1664         }
1665         ctxt->info.valid_sections |= cpu_to_le16(sections);
1666 }
1667
1668 /**
1669  * i40e_set_rx_mode - NDO callback to set the netdev filters
1670  * @netdev: network interface device structure
1671  **/
1672 #ifdef I40E_FCOE
1673 void i40e_set_rx_mode(struct net_device *netdev)
1674 #else
1675 static void i40e_set_rx_mode(struct net_device *netdev)
1676 #endif
1677 {
1678         struct i40e_netdev_priv *np = netdev_priv(netdev);
1679         struct i40e_mac_filter *f, *ftmp;
1680         struct i40e_vsi *vsi = np->vsi;
1681         struct netdev_hw_addr *uca;
1682         struct netdev_hw_addr *mca;
1683         struct netdev_hw_addr *ha;
1684
1685         spin_lock_bh(&vsi->mac_filter_list_lock);
1686
1687         /* add addr if not already in the filter list */
1688         netdev_for_each_uc_addr(uca, netdev) {
1689                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1690                         if (i40e_is_vsi_in_vlan(vsi))
1691                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1692                                                      false, true);
1693                         else
1694                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1695                                                 false, true);
1696                 }
1697         }
1698
1699         netdev_for_each_mc_addr(mca, netdev) {
1700                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1701                         if (i40e_is_vsi_in_vlan(vsi))
1702                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1703                                                      false, true);
1704                         else
1705                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1706                                                 false, true);
1707                 }
1708         }
1709
1710         /* remove filter if not in netdev list */
1711         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1712
1713                 if (!f->is_netdev)
1714                         continue;
1715
1716                 netdev_for_each_mc_addr(mca, netdev)
1717                         if (ether_addr_equal(mca->addr, f->macaddr))
1718                                 goto bottom_of_search_loop;
1719
1720                 netdev_for_each_uc_addr(uca, netdev)
1721                         if (ether_addr_equal(uca->addr, f->macaddr))
1722                                 goto bottom_of_search_loop;
1723
1724                 for_each_dev_addr(netdev, ha)
1725                         if (ether_addr_equal(ha->addr, f->macaddr))
1726                                 goto bottom_of_search_loop;
1727
1728                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1729                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1730
1731 bottom_of_search_loop:
1732                 continue;
1733         }
1734         spin_unlock_bh(&vsi->mac_filter_list_lock);
1735
1736         /* check for other flag changes */
1737         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1738                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1739                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1740         }
1741
1742         /* schedule our worker thread which will take care of
1743          * applying the new filter changes
1744          */
1745         i40e_service_event_schedule(vsi->back);
1746 }
1747
1748 /**
1749  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1750  * @vsi: pointer to vsi struct
1751  * @from: Pointer to list which contains MAC filter entries - changes to
1752  *        those entries needs to be undone.
1753  *
1754  * MAC filter entries from list were slated to be removed from device.
1755  **/
1756 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1757                                          struct list_head *from)
1758 {
1759         struct i40e_mac_filter *f, *ftmp;
1760
1761         list_for_each_entry_safe(f, ftmp, from, list) {
1762                 /* Move the element back into MAC filter list*/
1763                 list_move_tail(&f->list, &vsi->mac_filter_list);
1764         }
1765 }
1766
1767 /**
1768  * i40e_update_filter_state - Update filter state based on return data
1769  * from firmware
1770  * @count: Number of filters added
1771  * @add_list: return data from fw
1772  * @head: pointer to first filter in current batch
1773  * @aq_err: status from fw
1774  *
1775  * MAC filter entries from list were slated to be added to device. Returns
1776  * number of successful filters. Note that 0 does NOT mean success!
1777  **/
1778 static int
1779 i40e_update_filter_state(int count,
1780                          struct i40e_aqc_add_macvlan_element_data *add_list,
1781                          struct i40e_mac_filter *add_head, int aq_err)
1782 {
1783         int retval = 0;
1784         int i;
1785
1786
1787         if (!aq_err) {
1788                 retval = count;
1789                 /* Everything's good, mark all filters active. */
1790                 for (i = 0; i < count ; i++) {
1791                         add_head->state = I40E_FILTER_ACTIVE;
1792                         add_head = list_next_entry(add_head, list);
1793                 }
1794         } else if (aq_err == I40E_AQ_RC_ENOSPC) {
1795                 /* Device ran out of filter space. Check the return value
1796                  * for each filter to see which ones are active.
1797                  */
1798                 for (i = 0; i < count ; i++) {
1799                         if (add_list[i].match_method ==
1800                             I40E_AQC_MM_ERR_NO_RES) {
1801                                 add_head->state = I40E_FILTER_FAILED;
1802                         } else {
1803                                 add_head->state = I40E_FILTER_ACTIVE;
1804                                 retval++;
1805                         }
1806                         add_head = list_next_entry(add_head, list);
1807                 }
1808         } else {
1809                 /* Some other horrible thing happened, fail all filters */
1810                 retval = 0;
1811                 for (i = 0; i < count ; i++) {
1812                         add_head->state = I40E_FILTER_FAILED;
1813                         add_head = list_next_entry(add_head, list);
1814                 }
1815         }
1816         return retval;
1817 }
1818
1819 /**
1820  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1821  * @vsi: ptr to the VSI
1822  *
1823  * Push any outstanding VSI filter changes through the AdminQ.
1824  *
1825  * Returns 0 or error value
1826  **/
1827 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1828 {
1829         struct i40e_mac_filter *f, *ftmp, *add_head = NULL;
1830         struct list_head tmp_add_list, tmp_del_list;
1831         struct i40e_hw *hw = &vsi->back->hw;
1832         bool promisc_changed = false;
1833         char vsi_name[16] = "PF";
1834         int filter_list_len = 0;
1835         u32 changed_flags = 0;
1836         i40e_status aq_ret = 0;
1837         int retval = 0;
1838         struct i40e_pf *pf;
1839         int num_add = 0;
1840         int num_del = 0;
1841         int aq_err = 0;
1842         u16 cmd_flags;
1843         int list_size;
1844         int fcnt;
1845
1846         /* empty array typed pointers, kcalloc later */
1847         struct i40e_aqc_add_macvlan_element_data *add_list;
1848         struct i40e_aqc_remove_macvlan_element_data *del_list;
1849
1850         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1851                 usleep_range(1000, 2000);
1852         pf = vsi->back;
1853
1854         if (vsi->netdev) {
1855                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1856                 vsi->current_netdev_flags = vsi->netdev->flags;
1857         }
1858
1859         INIT_LIST_HEAD(&tmp_add_list);
1860         INIT_LIST_HEAD(&tmp_del_list);
1861
1862         if (vsi->type == I40E_VSI_SRIOV)
1863                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
1864         else if (vsi->type != I40E_VSI_MAIN)
1865                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
1866
1867         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1868                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1869
1870                 spin_lock_bh(&vsi->mac_filter_list_lock);
1871                 /* Create a list of filters to delete. */
1872                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1873                         if (f->state == I40E_FILTER_REMOVE) {
1874                                 WARN_ON(f->counter != 0);
1875                                 /* Move the element into temporary del_list */
1876                                 list_move_tail(&f->list, &tmp_del_list);
1877                                 vsi->active_filters--;
1878                         }
1879                         if (f->state == I40E_FILTER_NEW) {
1880                                 WARN_ON(f->counter == 0);
1881                                 /* Move the element into temporary add_list */
1882                                 list_move_tail(&f->list, &tmp_add_list);
1883                         }
1884                 }
1885                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1886         }
1887
1888         /* Now process 'del_list' outside the lock */
1889         if (!list_empty(&tmp_del_list)) {
1890                 filter_list_len = hw->aq.asq_buf_size /
1891                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1892                 list_size = filter_list_len *
1893                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1894                 del_list = kzalloc(list_size, GFP_ATOMIC);
1895                 if (!del_list) {
1896                         /* Undo VSI's MAC filter entry element updates */
1897                         spin_lock_bh(&vsi->mac_filter_list_lock);
1898                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1899                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1900                         retval = -ENOMEM;
1901                         goto out;
1902                 }
1903
1904                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1905                         cmd_flags = 0;
1906
1907                         /* add to delete list */
1908                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1909                         if (f->vlan == I40E_VLAN_ANY) {
1910                                 del_list[num_del].vlan_tag = 0;
1911                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1912                         } else {
1913                                 del_list[num_del].vlan_tag =
1914                                         cpu_to_le16((u16)(f->vlan));
1915                         }
1916
1917                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1918                         del_list[num_del].flags = cmd_flags;
1919                         num_del++;
1920
1921                         /* flush a full buffer */
1922                         if (num_del == filter_list_len) {
1923                                 aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid,
1924                                                                 del_list,
1925                                                                 num_del, NULL);
1926                                 aq_err = hw->aq.asq_last_status;
1927                                 num_del = 0;
1928                                 memset(del_list, 0, list_size);
1929
1930                                 /* Explicitly ignore and do not report when
1931                                  * firmware returns ENOENT.
1932                                  */
1933                                 if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1934                                         retval = -EIO;
1935                                         dev_info(&pf->pdev->dev,
1936                                                  "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1937                                                  vsi_name,
1938                                                  i40e_stat_str(hw, aq_ret),
1939                                                  i40e_aq_str(hw, aq_err));
1940                                 }
1941                         }
1942                         /* Release memory for MAC filter entries which were
1943                          * synced up with HW.
1944                          */
1945                         list_del(&f->list);
1946                         kfree(f);
1947                 }
1948
1949                 if (num_del) {
1950                         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, del_list,
1951                                                         num_del, NULL);
1952                         aq_err = hw->aq.asq_last_status;
1953                         num_del = 0;
1954
1955                         /* Explicitly ignore and do not report when firmware
1956                          * returns ENOENT.
1957                          */
1958                         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1959                                 retval = -EIO;
1960                                 dev_info(&pf->pdev->dev,
1961                                          "ignoring delete macvlan error on %s, err %s aq_err %s\n",
1962                                          vsi_name,
1963                                          i40e_stat_str(hw, aq_ret),
1964                                          i40e_aq_str(hw, aq_err));
1965                         }
1966                 }
1967
1968                 kfree(del_list);
1969                 del_list = NULL;
1970         }
1971
1972         if (!list_empty(&tmp_add_list)) {
1973                 /* Do all the adds now. */
1974                 filter_list_len = hw->aq.asq_buf_size /
1975                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1976                 list_size = filter_list_len *
1977                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1978                 add_list = kzalloc(list_size, GFP_ATOMIC);
1979                 if (!add_list) {
1980                         retval = -ENOMEM;
1981                         goto out;
1982                 }
1983                 num_add = 0;
1984                 list_for_each_entry(f, &tmp_add_list, list) {
1985                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1986                                      &vsi->state)) {
1987                                 f->state = I40E_FILTER_FAILED;
1988                                 continue;
1989                         }
1990                         /* add to add array */
1991                         if (num_add == 0)
1992                                 add_head = f;
1993                         cmd_flags = 0;
1994                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1995                         if (f->vlan == I40E_VLAN_ANY) {
1996                                 add_list[num_add].vlan_tag = 0;
1997                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1998                         } else {
1999                                 add_list[num_add].vlan_tag =
2000                                         cpu_to_le16((u16)(f->vlan));
2001                         }
2002                         add_list[num_add].queue_number = 0;
2003                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2004                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2005                         num_add++;
2006
2007                         /* flush a full buffer */
2008                         if (num_add == filter_list_len) {
2009                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2010                                                              add_list, num_add,
2011                                                              NULL);
2012                                 aq_err = hw->aq.asq_last_status;
2013                                 fcnt = i40e_update_filter_state(num_add,
2014                                                                 add_list,
2015                                                                 add_head,
2016                                                                 aq_ret);
2017                                 vsi->active_filters += fcnt;
2018
2019                                 if (fcnt != num_add) {
2020                                         promisc_changed = true;
2021                                         set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2022                                                 &vsi->state);
2023                                         vsi->promisc_threshold =
2024                                                 (vsi->active_filters * 3) / 4;
2025                                         dev_warn(&pf->pdev->dev,
2026                                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2027                                                  i40e_aq_str(hw, aq_err),
2028                                                  vsi_name);
2029                                 }
2030                                 memset(add_list, 0, list_size);
2031                                 num_add = 0;
2032                         }
2033                 }
2034                 if (num_add) {
2035                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2036                                                      add_list, num_add, NULL);
2037                         aq_err = hw->aq.asq_last_status;
2038                         fcnt = i40e_update_filter_state(num_add, add_list,
2039                                                         add_head, aq_ret);
2040                         vsi->active_filters += fcnt;
2041                         if (fcnt != num_add) {
2042                                 promisc_changed = true;
2043                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2044                                         &vsi->state);
2045                                 vsi->promisc_threshold =
2046                                                 (vsi->active_filters * 3) / 4;
2047                                 dev_warn(&pf->pdev->dev,
2048                                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2049                                          i40e_aq_str(hw, aq_err), vsi_name);
2050                         }
2051                 }
2052                 /* Now move all of the filters from the temp add list back to
2053                  * the VSI's list.
2054                  */
2055                 spin_lock_bh(&vsi->mac_filter_list_lock);
2056                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2057                         list_move_tail(&f->list, &vsi->mac_filter_list);
2058                 }
2059                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2060                 kfree(add_list);
2061                 add_list = NULL;
2062         }
2063
2064         /* Check to see if we can drop out of overflow promiscuous mode. */
2065         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2066             (vsi->active_filters < vsi->promisc_threshold)) {
2067                 int failed_count = 0;
2068                 /* See if we have any failed filters. We can't drop out of
2069                  * promiscuous until these have all been deleted.
2070                  */
2071                 spin_lock_bh(&vsi->mac_filter_list_lock);
2072                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2073                         if (f->state == I40E_FILTER_FAILED)
2074                                 failed_count++;
2075                 }
2076                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2077                 if (!failed_count) {
2078                         dev_info(&pf->pdev->dev,
2079                                  "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2080                                  vsi_name);
2081                         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2082                         promisc_changed = true;
2083                         vsi->promisc_threshold = 0;
2084                 }
2085         }
2086
2087         /* if the VF is not trusted do not do promisc */
2088         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2089                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2090                 goto out;
2091         }
2092
2093         /* check for changes in promiscuous modes */
2094         if (changed_flags & IFF_ALLMULTI) {
2095                 bool cur_multipromisc;
2096
2097                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2098                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2099                                                                vsi->seid,
2100                                                                cur_multipromisc,
2101                                                                NULL);
2102                 if (aq_ret) {
2103                         retval = i40e_aq_rc_to_posix(aq_ret,
2104                                                      hw->aq.asq_last_status);
2105                         dev_info(&pf->pdev->dev,
2106                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2107                                  vsi_name,
2108                                  i40e_stat_str(hw, aq_ret),
2109                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2110                 }
2111         }
2112         if ((changed_flags & IFF_PROMISC) ||
2113             (promisc_changed &&
2114              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2115                 bool cur_promisc;
2116
2117                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2118                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2119                                         &vsi->state));
2120                 if ((vsi->type == I40E_VSI_MAIN) &&
2121                     (pf->lan_veb != I40E_NO_VEB) &&
2122                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2123                         /* set defport ON for Main VSI instead of true promisc
2124                          * this way we will get all unicast/multicast and VLAN
2125                          * promisc behavior but will not get VF or VMDq traffic
2126                          * replicated on the Main VSI.
2127                          */
2128                         if (pf->cur_promisc != cur_promisc) {
2129                                 pf->cur_promisc = cur_promisc;
2130                                 if (cur_promisc)
2131                                         aq_ret =
2132                                               i40e_aq_set_default_vsi(hw,
2133                                                                       vsi->seid,
2134                                                                       NULL);
2135                                 else
2136                                         aq_ret =
2137                                             i40e_aq_clear_default_vsi(hw,
2138                                                                       vsi->seid,
2139                                                                       NULL);
2140                                 if (aq_ret) {
2141                                         retval = i40e_aq_rc_to_posix(aq_ret,
2142                                                         hw->aq.asq_last_status);
2143                                         dev_info(&pf->pdev->dev,
2144                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2145                                                  vsi_name,
2146                                                  i40e_stat_str(hw, aq_ret),
2147                                                  i40e_aq_str(hw,
2148                                                      hw->aq.asq_last_status));
2149                                 }
2150                         }
2151                 } else {
2152                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2153                                                           hw,
2154                                                           vsi->seid,
2155                                                           cur_promisc, NULL,
2156                                                           true);
2157                         if (aq_ret) {
2158                                 retval =
2159                                 i40e_aq_rc_to_posix(aq_ret,
2160                                                     hw->aq.asq_last_status);
2161                                 dev_info(&pf->pdev->dev,
2162                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2163                                          vsi_name,
2164                                          i40e_stat_str(hw, aq_ret),
2165                                          i40e_aq_str(hw,
2166                                                      hw->aq.asq_last_status));
2167                         }
2168                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2169                                                           hw,
2170                                                           vsi->seid,
2171                                                           cur_promisc, NULL);
2172                         if (aq_ret) {
2173                                 retval =
2174                                 i40e_aq_rc_to_posix(aq_ret,
2175                                                     hw->aq.asq_last_status);
2176                                 dev_info(&pf->pdev->dev,
2177                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2178                                          vsi_name,
2179                                          i40e_stat_str(hw, aq_ret),
2180                                          i40e_aq_str(hw,
2181                                                      hw->aq.asq_last_status));
2182                         }
2183                 }
2184                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2185                                                    vsi->seid,
2186                                                    cur_promisc, NULL);
2187                 if (aq_ret) {
2188                         retval = i40e_aq_rc_to_posix(aq_ret,
2189                                                      pf->hw.aq.asq_last_status);
2190                         dev_info(&pf->pdev->dev,
2191                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2192                                          i40e_stat_str(hw, aq_ret),
2193                                          i40e_aq_str(hw,
2194                                                      hw->aq.asq_last_status));
2195                 }
2196         }
2197 out:
2198         /* if something went wrong then set the changed flag so we try again */
2199         if (retval)
2200                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2201
2202         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2203         return retval;
2204 }
2205
2206 /**
2207  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2208  * @pf: board private structure
2209  **/
2210 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2211 {
2212         int v;
2213
2214         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2215                 return;
2216         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2217
2218         for (v = 0; v < pf->num_alloc_vsi; v++) {
2219                 if (pf->vsi[v] &&
2220                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2221                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2222
2223                         if (ret) {
2224                                 /* come back and try again later */
2225                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2226                                 break;
2227                         }
2228                 }
2229         }
2230 }
2231
2232 /**
2233  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2234  * @netdev: network interface device structure
2235  * @new_mtu: new value for maximum frame size
2236  *
2237  * Returns 0 on success, negative on failure
2238  **/
2239 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2240 {
2241         struct i40e_netdev_priv *np = netdev_priv(netdev);
2242         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2243         struct i40e_vsi *vsi = np->vsi;
2244
2245         /* MTU < 68 is an error and causes problems on some kernels */
2246         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2247                 return -EINVAL;
2248
2249         netdev_info(netdev, "changing MTU from %d to %d\n",
2250                     netdev->mtu, new_mtu);
2251         netdev->mtu = new_mtu;
2252         if (netif_running(netdev))
2253                 i40e_vsi_reinit_locked(vsi);
2254         i40e_notify_client_of_l2_param_changes(vsi);
2255         return 0;
2256 }
2257
2258 /**
2259  * i40e_ioctl - Access the hwtstamp interface
2260  * @netdev: network interface device structure
2261  * @ifr: interface request data
2262  * @cmd: ioctl command
2263  **/
2264 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2265 {
2266         struct i40e_netdev_priv *np = netdev_priv(netdev);
2267         struct i40e_pf *pf = np->vsi->back;
2268
2269         switch (cmd) {
2270         case SIOCGHWTSTAMP:
2271                 return i40e_ptp_get_ts_config(pf, ifr);
2272         case SIOCSHWTSTAMP:
2273                 return i40e_ptp_set_ts_config(pf, ifr);
2274         default:
2275                 return -EOPNOTSUPP;
2276         }
2277 }
2278
2279 /**
2280  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2281  * @vsi: the vsi being adjusted
2282  **/
2283 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2284 {
2285         struct i40e_vsi_context ctxt;
2286         i40e_status ret;
2287
2288         if ((vsi->info.valid_sections &
2289              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2290             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2291                 return;  /* already enabled */
2292
2293         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2294         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2295                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2296
2297         ctxt.seid = vsi->seid;
2298         ctxt.info = vsi->info;
2299         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2300         if (ret) {
2301                 dev_info(&vsi->back->pdev->dev,
2302                          "update vlan stripping failed, err %s aq_err %s\n",
2303                          i40e_stat_str(&vsi->back->hw, ret),
2304                          i40e_aq_str(&vsi->back->hw,
2305                                      vsi->back->hw.aq.asq_last_status));
2306         }
2307 }
2308
2309 /**
2310  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2311  * @vsi: the vsi being adjusted
2312  **/
2313 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2314 {
2315         struct i40e_vsi_context ctxt;
2316         i40e_status ret;
2317
2318         if ((vsi->info.valid_sections &
2319              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2320             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2321              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2322                 return;  /* already disabled */
2323
2324         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2325         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2326                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2327
2328         ctxt.seid = vsi->seid;
2329         ctxt.info = vsi->info;
2330         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2331         if (ret) {
2332                 dev_info(&vsi->back->pdev->dev,
2333                          "update vlan stripping failed, err %s aq_err %s\n",
2334                          i40e_stat_str(&vsi->back->hw, ret),
2335                          i40e_aq_str(&vsi->back->hw,
2336                                      vsi->back->hw.aq.asq_last_status));
2337         }
2338 }
2339
2340 /**
2341  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2342  * @netdev: network interface to be adjusted
2343  * @features: netdev features to test if VLAN offload is enabled or not
2344  **/
2345 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2346 {
2347         struct i40e_netdev_priv *np = netdev_priv(netdev);
2348         struct i40e_vsi *vsi = np->vsi;
2349
2350         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2351                 i40e_vlan_stripping_enable(vsi);
2352         else
2353                 i40e_vlan_stripping_disable(vsi);
2354 }
2355
2356 /**
2357  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2358  * @vsi: the vsi being configured
2359  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2360  **/
2361 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2362 {
2363         struct i40e_mac_filter *f, *ftmp, *add_f;
2364         bool is_netdev, is_vf;
2365
2366         is_vf = (vsi->type == I40E_VSI_SRIOV);
2367         is_netdev = !!(vsi->netdev);
2368
2369         /* Locked once because all functions invoked below iterates list*/
2370         spin_lock_bh(&vsi->mac_filter_list_lock);
2371
2372         if (is_netdev) {
2373                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2374                                         is_vf, is_netdev);
2375                 if (!add_f) {
2376                         dev_info(&vsi->back->pdev->dev,
2377                                  "Could not add vlan filter %d for %pM\n",
2378                                  vid, vsi->netdev->dev_addr);
2379                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2380                         return -ENOMEM;
2381                 }
2382         }
2383
2384         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2385                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2386                 if (!add_f) {
2387                         dev_info(&vsi->back->pdev->dev,
2388                                  "Could not add vlan filter %d for %pM\n",
2389                                  vid, f->macaddr);
2390                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2391                         return -ENOMEM;
2392                 }
2393         }
2394
2395         /* Now if we add a vlan tag, make sure to check if it is the first
2396          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2397          * with 0, so we now accept untagged and specified tagged traffic
2398          * (and not all tags along with untagged)
2399          */
2400         if (vid > 0) {
2401                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2402                                                   I40E_VLAN_ANY,
2403                                                   is_vf, is_netdev)) {
2404                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2405                                         I40E_VLAN_ANY, is_vf, is_netdev);
2406                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2407                                                 is_vf, is_netdev);
2408                         if (!add_f) {
2409                                 dev_info(&vsi->back->pdev->dev,
2410                                          "Could not add filter 0 for %pM\n",
2411                                          vsi->netdev->dev_addr);
2412                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2413                                 return -ENOMEM;
2414                         }
2415                 }
2416         }
2417
2418         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2419         if (vid > 0 && !vsi->info.pvid) {
2420                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2421                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2422                                               is_vf, is_netdev))
2423                                 continue;
2424                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2425                                         is_vf, is_netdev);
2426                         add_f = i40e_add_filter(vsi, f->macaddr,
2427                                                 0, is_vf, is_netdev);
2428                         if (!add_f) {
2429                                 dev_info(&vsi->back->pdev->dev,
2430                                          "Could not add filter 0 for %pM\n",
2431                                         f->macaddr);
2432                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2433                                 return -ENOMEM;
2434                         }
2435                 }
2436         }
2437
2438         spin_unlock_bh(&vsi->mac_filter_list_lock);
2439
2440         /* schedule our worker thread which will take care of
2441          * applying the new filter changes
2442          */
2443         i40e_service_event_schedule(vsi->back);
2444         return 0;
2445 }
2446
2447 /**
2448  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2449  * @vsi: the vsi being configured
2450  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2451  *
2452  * Return: 0 on success or negative otherwise
2453  **/
2454 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2455 {
2456         struct net_device *netdev = vsi->netdev;
2457         struct i40e_mac_filter *f, *ftmp, *add_f;
2458         bool is_vf, is_netdev;
2459         int filter_count = 0;
2460
2461         is_vf = (vsi->type == I40E_VSI_SRIOV);
2462         is_netdev = !!(netdev);
2463
2464         /* Locked once because all functions invoked below iterates list */
2465         spin_lock_bh(&vsi->mac_filter_list_lock);
2466
2467         if (is_netdev)
2468                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2469
2470         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
2471                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2472
2473         /* go through all the filters for this VSI and if there is only
2474          * vid == 0 it means there are no other filters, so vid 0 must
2475          * be replaced with -1. This signifies that we should from now
2476          * on accept any traffic (with any tag present, or untagged)
2477          */
2478         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2479                 if (is_netdev) {
2480                         if (f->vlan &&
2481                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2482                                 filter_count++;
2483                 }
2484
2485                 if (f->vlan)
2486                         filter_count++;
2487         }
2488
2489         if (!filter_count && is_netdev) {
2490                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2491                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2492                                     is_vf, is_netdev);
2493                 if (!f) {
2494                         dev_info(&vsi->back->pdev->dev,
2495                                  "Could not add filter %d for %pM\n",
2496                                  I40E_VLAN_ANY, netdev->dev_addr);
2497                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2498                         return -ENOMEM;
2499                 }
2500         }
2501
2502         if (!filter_count) {
2503                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2504                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2505                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2506                                                 is_vf, is_netdev);
2507                         if (!add_f) {
2508                                 dev_info(&vsi->back->pdev->dev,
2509                                          "Could not add filter %d for %pM\n",
2510                                          I40E_VLAN_ANY, f->macaddr);
2511                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2512                                 return -ENOMEM;
2513                         }
2514                 }
2515         }
2516
2517         spin_unlock_bh(&vsi->mac_filter_list_lock);
2518
2519         /* schedule our worker thread which will take care of
2520          * applying the new filter changes
2521          */
2522         i40e_service_event_schedule(vsi->back);
2523         return 0;
2524 }
2525
2526 /**
2527  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2528  * @netdev: network interface to be adjusted
2529  * @vid: vlan id to be added
2530  *
2531  * net_device_ops implementation for adding vlan ids
2532  **/
2533 #ifdef I40E_FCOE
2534 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2535                          __always_unused __be16 proto, u16 vid)
2536 #else
2537 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2538                                 __always_unused __be16 proto, u16 vid)
2539 #endif
2540 {
2541         struct i40e_netdev_priv *np = netdev_priv(netdev);
2542         struct i40e_vsi *vsi = np->vsi;
2543         int ret = 0;
2544
2545         if (vid > 4095)
2546                 return -EINVAL;
2547
2548         /* If the network stack called us with vid = 0 then
2549          * it is asking to receive priority tagged packets with
2550          * vlan id 0.  Our HW receives them by default when configured
2551          * to receive untagged packets so there is no need to add an
2552          * extra filter for vlan 0 tagged packets.
2553          */
2554         if (vid)
2555                 ret = i40e_vsi_add_vlan(vsi, vid);
2556
2557         if (!ret && (vid < VLAN_N_VID))
2558                 set_bit(vid, vsi->active_vlans);
2559
2560         return ret;
2561 }
2562
2563 /**
2564  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2565  * @netdev: network interface to be adjusted
2566  * @vid: vlan id to be removed
2567  *
2568  * net_device_ops implementation for removing vlan ids
2569  **/
2570 #ifdef I40E_FCOE
2571 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2572                           __always_unused __be16 proto, u16 vid)
2573 #else
2574 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2575                                  __always_unused __be16 proto, u16 vid)
2576 #endif
2577 {
2578         struct i40e_netdev_priv *np = netdev_priv(netdev);
2579         struct i40e_vsi *vsi = np->vsi;
2580
2581         /* return code is ignored as there is nothing a user
2582          * can do about failure to remove and a log message was
2583          * already printed from the other function
2584          */
2585         i40e_vsi_kill_vlan(vsi, vid);
2586
2587         clear_bit(vid, vsi->active_vlans);
2588
2589         return 0;
2590 }
2591
2592 /**
2593  * i40e_macaddr_init - explicitly write the mac address filters
2594  *
2595  * @vsi: pointer to the vsi
2596  * @macaddr: the MAC address
2597  *
2598  * This is needed when the macaddr has been obtained by other
2599  * means than the default, e.g., from Open Firmware or IDPROM.
2600  * Returns 0 on success, negative on failure
2601  **/
2602 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2603 {
2604         int ret;
2605         struct i40e_aqc_add_macvlan_element_data element;
2606
2607         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2608                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2609                                         macaddr, NULL);
2610         if (ret) {
2611                 dev_info(&vsi->back->pdev->dev,
2612                          "Addr change for VSI failed: %d\n", ret);
2613                 return -EADDRNOTAVAIL;
2614         }
2615
2616         memset(&element, 0, sizeof(element));
2617         ether_addr_copy(element.mac_addr, macaddr);
2618         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2619         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2620         if (ret) {
2621                 dev_info(&vsi->back->pdev->dev,
2622                          "add filter failed err %s aq_err %s\n",
2623                          i40e_stat_str(&vsi->back->hw, ret),
2624                          i40e_aq_str(&vsi->back->hw,
2625                                      vsi->back->hw.aq.asq_last_status));
2626         }
2627         return ret;
2628 }
2629
2630 /**
2631  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2632  * @vsi: the vsi being brought back up
2633  **/
2634 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2635 {
2636         u16 vid;
2637
2638         if (!vsi->netdev)
2639                 return;
2640
2641         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2642
2643         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2644                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2645                                      vid);
2646 }
2647
2648 /**
2649  * i40e_vsi_add_pvid - Add pvid for the VSI
2650  * @vsi: the vsi being adjusted
2651  * @vid: the vlan id to set as a PVID
2652  **/
2653 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2654 {
2655         struct i40e_vsi_context ctxt;
2656         i40e_status ret;
2657
2658         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2659         vsi->info.pvid = cpu_to_le16(vid);
2660         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2661                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2662                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2663
2664         ctxt.seid = vsi->seid;
2665         ctxt.info = vsi->info;
2666         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2667         if (ret) {
2668                 dev_info(&vsi->back->pdev->dev,
2669                          "add pvid failed, err %s aq_err %s\n",
2670                          i40e_stat_str(&vsi->back->hw, ret),
2671                          i40e_aq_str(&vsi->back->hw,
2672                                      vsi->back->hw.aq.asq_last_status));
2673                 return -ENOENT;
2674         }
2675
2676         return 0;
2677 }
2678
2679 /**
2680  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2681  * @vsi: the vsi being adjusted
2682  *
2683  * Just use the vlan_rx_register() service to put it back to normal
2684  **/
2685 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2686 {
2687         i40e_vlan_stripping_disable(vsi);
2688
2689         vsi->info.pvid = 0;
2690 }
2691
2692 /**
2693  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2694  * @vsi: ptr to the VSI
2695  *
2696  * If this function returns with an error, then it's possible one or
2697  * more of the rings is populated (while the rest are not).  It is the
2698  * callers duty to clean those orphaned rings.
2699  *
2700  * Return 0 on success, negative on failure
2701  **/
2702 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2703 {
2704         int i, err = 0;
2705
2706         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2707                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2708
2709         return err;
2710 }
2711
2712 /**
2713  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2714  * @vsi: ptr to the VSI
2715  *
2716  * Free VSI's transmit software resources
2717  **/
2718 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2719 {
2720         int i;
2721
2722         if (!vsi->tx_rings)
2723                 return;
2724
2725         for (i = 0; i < vsi->num_queue_pairs; i++)
2726                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2727                         i40e_free_tx_resources(vsi->tx_rings[i]);
2728 }
2729
2730 /**
2731  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2732  * @vsi: ptr to the VSI
2733  *
2734  * If this function returns with an error, then it's possible one or
2735  * more of the rings is populated (while the rest are not).  It is the
2736  * callers duty to clean those orphaned rings.
2737  *
2738  * Return 0 on success, negative on failure
2739  **/
2740 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2741 {
2742         int i, err = 0;
2743
2744         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2745                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2746 #ifdef I40E_FCOE
2747         i40e_fcoe_setup_ddp_resources(vsi);
2748 #endif
2749         return err;
2750 }
2751
2752 /**
2753  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2754  * @vsi: ptr to the VSI
2755  *
2756  * Free all receive software resources
2757  **/
2758 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2759 {
2760         int i;
2761
2762         if (!vsi->rx_rings)
2763                 return;
2764
2765         for (i = 0; i < vsi->num_queue_pairs; i++)
2766                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2767                         i40e_free_rx_resources(vsi->rx_rings[i]);
2768 #ifdef I40E_FCOE
2769         i40e_fcoe_free_ddp_resources(vsi);
2770 #endif
2771 }
2772
2773 /**
2774  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2775  * @ring: The Tx ring to configure
2776  *
2777  * This enables/disables XPS for a given Tx descriptor ring
2778  * based on the TCs enabled for the VSI that ring belongs to.
2779  **/
2780 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2781 {
2782         struct i40e_vsi *vsi = ring->vsi;
2783         cpumask_var_t mask;
2784
2785         if (!ring->q_vector || !ring->netdev)
2786                 return;
2787
2788         /* Single TC mode enable XPS */
2789         if (vsi->tc_config.numtc <= 1) {
2790                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2791                         netif_set_xps_queue(ring->netdev,
2792                                             &ring->q_vector->affinity_mask,
2793                                             ring->queue_index);
2794         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2795                 /* Disable XPS to allow selection based on TC */
2796                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2797                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2798                 free_cpumask_var(mask);
2799         }
2800
2801         /* schedule our worker thread which will take care of
2802          * applying the new filter changes
2803          */
2804         i40e_service_event_schedule(vsi->back);
2805 }
2806
2807 /**
2808  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2809  * @ring: The Tx ring to configure
2810  *
2811  * Configure the Tx descriptor ring in the HMC context.
2812  **/
2813 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2814 {
2815         struct i40e_vsi *vsi = ring->vsi;
2816         u16 pf_q = vsi->base_queue + ring->queue_index;
2817         struct i40e_hw *hw = &vsi->back->hw;
2818         struct i40e_hmc_obj_txq tx_ctx;
2819         i40e_status err = 0;
2820         u32 qtx_ctl = 0;
2821
2822         /* some ATR related tx ring init */
2823         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2824                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2825                 ring->atr_count = 0;
2826         } else {
2827                 ring->atr_sample_rate = 0;
2828         }
2829
2830         /* configure XPS */
2831         i40e_config_xps_tx_ring(ring);
2832
2833         /* clear the context structure first */
2834         memset(&tx_ctx, 0, sizeof(tx_ctx));
2835
2836         tx_ctx.new_context = 1;
2837         tx_ctx.base = (ring->dma / 128);
2838         tx_ctx.qlen = ring->count;
2839         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2840                                                I40E_FLAG_FD_ATR_ENABLED));
2841 #ifdef I40E_FCOE
2842         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2843 #endif
2844         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2845         /* FDIR VSI tx ring can still use RS bit and writebacks */
2846         if (vsi->type != I40E_VSI_FDIR)
2847                 tx_ctx.head_wb_ena = 1;
2848         tx_ctx.head_wb_addr = ring->dma +
2849                               (ring->count * sizeof(struct i40e_tx_desc));
2850
2851         /* As part of VSI creation/update, FW allocates certain
2852          * Tx arbitration queue sets for each TC enabled for
2853          * the VSI. The FW returns the handles to these queue
2854          * sets as part of the response buffer to Add VSI,
2855          * Update VSI, etc. AQ commands. It is expected that
2856          * these queue set handles be associated with the Tx
2857          * queues by the driver as part of the TX queue context
2858          * initialization. This has to be done regardless of
2859          * DCB as by default everything is mapped to TC0.
2860          */
2861         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2862         tx_ctx.rdylist_act = 0;
2863
2864         /* clear the context in the HMC */
2865         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2866         if (err) {
2867                 dev_info(&vsi->back->pdev->dev,
2868                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2869                          ring->queue_index, pf_q, err);
2870                 return -ENOMEM;
2871         }
2872
2873         /* set the context in the HMC */
2874         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2875         if (err) {
2876                 dev_info(&vsi->back->pdev->dev,
2877                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2878                          ring->queue_index, pf_q, err);
2879                 return -ENOMEM;
2880         }
2881
2882         /* Now associate this queue with this PCI function */
2883         if (vsi->type == I40E_VSI_VMDQ2) {
2884                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2885                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2886                            I40E_QTX_CTL_VFVM_INDX_MASK;
2887         } else {
2888                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2889         }
2890
2891         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2892                     I40E_QTX_CTL_PF_INDX_MASK);
2893         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2894         i40e_flush(hw);
2895
2896         /* cache tail off for easier writes later */
2897         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2898
2899         return 0;
2900 }
2901
2902 /**
2903  * i40e_configure_rx_ring - Configure a receive ring context
2904  * @ring: The Rx ring to configure
2905  *
2906  * Configure the Rx descriptor ring in the HMC context.
2907  **/
2908 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2909 {
2910         struct i40e_vsi *vsi = ring->vsi;
2911         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2912         u16 pf_q = vsi->base_queue + ring->queue_index;
2913         struct i40e_hw *hw = &vsi->back->hw;
2914         struct i40e_hmc_obj_rxq rx_ctx;
2915         i40e_status err = 0;
2916
2917         ring->state = 0;
2918
2919         /* clear the context structure first */
2920         memset(&rx_ctx, 0, sizeof(rx_ctx));
2921
2922         ring->rx_buf_len = vsi->rx_buf_len;
2923
2924         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2925
2926         rx_ctx.base = (ring->dma / 128);
2927         rx_ctx.qlen = ring->count;
2928
2929         /* use 32 byte descriptors */
2930         rx_ctx.dsize = 1;
2931
2932         /* descriptor type is always zero
2933          * rx_ctx.dtype = 0;
2934          */
2935         rx_ctx.hsplit_0 = 0;
2936
2937         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2938         if (hw->revision_id == 0)
2939                 rx_ctx.lrxqthresh = 0;
2940         else
2941                 rx_ctx.lrxqthresh = 2;
2942         rx_ctx.crcstrip = 1;
2943         rx_ctx.l2tsel = 1;
2944         /* this controls whether VLAN is stripped from inner headers */
2945         rx_ctx.showiv = 0;
2946 #ifdef I40E_FCOE
2947         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2948 #endif
2949         /* set the prefena field to 1 because the manual says to */
2950         rx_ctx.prefena = 1;
2951
2952         /* clear the context in the HMC */
2953         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2954         if (err) {
2955                 dev_info(&vsi->back->pdev->dev,
2956                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2957                          ring->queue_index, pf_q, err);
2958                 return -ENOMEM;
2959         }
2960
2961         /* set the context in the HMC */
2962         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2963         if (err) {
2964                 dev_info(&vsi->back->pdev->dev,
2965                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2966                          ring->queue_index, pf_q, err);
2967                 return -ENOMEM;
2968         }
2969
2970         /* cache tail for quicker writes, and clear the reg before use */
2971         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2972         writel(0, ring->tail);
2973
2974         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2975
2976         return 0;
2977 }
2978
2979 /**
2980  * i40e_vsi_configure_tx - Configure the VSI for Tx
2981  * @vsi: VSI structure describing this set of rings and resources
2982  *
2983  * Configure the Tx VSI for operation.
2984  **/
2985 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2986 {
2987         int err = 0;
2988         u16 i;
2989
2990         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2991                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2992
2993         return err;
2994 }
2995
2996 /**
2997  * i40e_vsi_configure_rx - Configure the VSI for Rx
2998  * @vsi: the VSI being configured
2999  *
3000  * Configure the Rx VSI for operation.
3001  **/
3002 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3003 {
3004         int err = 0;
3005         u16 i;
3006
3007         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3008                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3009                                + ETH_FCS_LEN + VLAN_HLEN;
3010         else
3011                 vsi->max_frame = I40E_RXBUFFER_2048;
3012
3013         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3014
3015 #ifdef I40E_FCOE
3016         /* setup rx buffer for FCoE */
3017         if ((vsi->type == I40E_VSI_FCOE) &&
3018             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3019                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3020                 vsi->max_frame = I40E_RXBUFFER_3072;
3021         }
3022
3023 #endif /* I40E_FCOE */
3024         /* round up for the chip's needs */
3025         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3026                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3027
3028         /* set up individual rings */
3029         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3030                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3031
3032         return err;
3033 }
3034
3035 /**
3036  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3037  * @vsi: ptr to the VSI
3038  **/
3039 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3040 {
3041         struct i40e_ring *tx_ring, *rx_ring;
3042         u16 qoffset, qcount;
3043         int i, n;
3044
3045         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3046                 /* Reset the TC information */
3047                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3048                         rx_ring = vsi->rx_rings[i];
3049                         tx_ring = vsi->tx_rings[i];
3050                         rx_ring->dcb_tc = 0;
3051                         tx_ring->dcb_tc = 0;
3052                 }
3053         }
3054
3055         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3056                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3057                         continue;
3058
3059                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3060                 qcount = vsi->tc_config.tc_info[n].qcount;
3061                 for (i = qoffset; i < (qoffset + qcount); i++) {
3062                         rx_ring = vsi->rx_rings[i];
3063                         tx_ring = vsi->tx_rings[i];
3064                         rx_ring->dcb_tc = n;
3065                         tx_ring->dcb_tc = n;
3066                 }
3067         }
3068 }
3069
3070 /**
3071  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3072  * @vsi: ptr to the VSI
3073  **/
3074 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3075 {
3076         struct i40e_pf *pf = vsi->back;
3077         int err;
3078
3079         if (vsi->netdev)
3080                 i40e_set_rx_mode(vsi->netdev);
3081
3082         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3083                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3084                 if (err) {
3085                         dev_warn(&pf->pdev->dev,
3086                                  "could not set up macaddr; err %d\n", err);
3087                 }
3088         }
3089 }
3090
3091 /**
3092  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3093  * @vsi: Pointer to the targeted VSI
3094  *
3095  * This function replays the hlist on the hw where all the SB Flow Director
3096  * filters were saved.
3097  **/
3098 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3099 {
3100         struct i40e_fdir_filter *filter;
3101         struct i40e_pf *pf = vsi->back;
3102         struct hlist_node *node;
3103
3104         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3105                 return;
3106
3107         hlist_for_each_entry_safe(filter, node,
3108                                   &pf->fdir_filter_list, fdir_node) {
3109                 i40e_add_del_fdir(vsi, filter, true);
3110         }
3111 }
3112
3113 /**
3114  * i40e_vsi_configure - Set up the VSI for action
3115  * @vsi: the VSI being configured
3116  **/
3117 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3118 {
3119         int err;
3120
3121         i40e_set_vsi_rx_mode(vsi);
3122         i40e_restore_vlan(vsi);
3123         i40e_vsi_config_dcb_rings(vsi);
3124         err = i40e_vsi_configure_tx(vsi);
3125         if (!err)
3126                 err = i40e_vsi_configure_rx(vsi);
3127
3128         return err;
3129 }
3130
3131 /**
3132  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3133  * @vsi: the VSI being configured
3134  **/
3135 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3136 {
3137         struct i40e_pf *pf = vsi->back;
3138         struct i40e_hw *hw = &pf->hw;
3139         u16 vector;
3140         int i, q;
3141         u32 qp;
3142
3143         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3144          * and PFINT_LNKLSTn registers, e.g.:
3145          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3146          */
3147         qp = vsi->base_queue;
3148         vector = vsi->base_vector;
3149         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3150                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3151
3152                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3153                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3154                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3155                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3156                      q_vector->rx.itr);
3157                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3158                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3159                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3160                      q_vector->tx.itr);
3161                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3162                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3163
3164                 /* Linked list for the queuepairs assigned to this vector */
3165                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3166                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3167                         u32 val;
3168
3169                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3170                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3171                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3172                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3173                               (I40E_QUEUE_TYPE_TX
3174                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3175
3176                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3177
3178                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3179                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3180                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3181                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3182                               (I40E_QUEUE_TYPE_RX
3183                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3184
3185                         /* Terminate the linked list */
3186                         if (q == (q_vector->num_ringpairs - 1))
3187                                 val |= (I40E_QUEUE_END_OF_LIST
3188                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3189
3190                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3191                         qp++;
3192                 }
3193         }
3194
3195         i40e_flush(hw);
3196 }
3197
3198 /**
3199  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3200  * @hw: ptr to the hardware info
3201  **/
3202 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3203 {
3204         struct i40e_hw *hw = &pf->hw;
3205         u32 val;
3206
3207         /* clear things first */
3208         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3209         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3210
3211         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3212               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3213               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3214               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3215               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3216               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3217               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3218               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3219
3220         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3221                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3222
3223         if (pf->flags & I40E_FLAG_PTP)
3224                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3225
3226         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3227
3228         /* SW_ITR_IDX = 0, but don't change INTENA */
3229         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3230                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3231
3232         /* OTHER_ITR_IDX = 0 */
3233         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3234 }
3235
3236 /**
3237  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3238  * @vsi: the VSI being configured
3239  **/
3240 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3241 {
3242         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3243         struct i40e_pf *pf = vsi->back;
3244         struct i40e_hw *hw = &pf->hw;
3245         u32 val;
3246
3247         /* set the ITR configuration */
3248         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3249         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3250         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3251         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3252         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3253         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3254         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3255
3256         i40e_enable_misc_int_causes(pf);
3257
3258         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3259         wr32(hw, I40E_PFINT_LNKLST0, 0);
3260
3261         /* Associate the queue pair to the vector and enable the queue int */
3262         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3263               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3264               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3265
3266         wr32(hw, I40E_QINT_RQCTL(0), val);
3267
3268         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3269               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3270               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3271
3272         wr32(hw, I40E_QINT_TQCTL(0), val);
3273         i40e_flush(hw);
3274 }
3275
3276 /**
3277  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3278  * @pf: board private structure
3279  **/
3280 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3281 {
3282         struct i40e_hw *hw = &pf->hw;
3283
3284         wr32(hw, I40E_PFINT_DYN_CTL0,
3285              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3286         i40e_flush(hw);
3287 }
3288
3289 /**
3290  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3291  * @pf: board private structure
3292  * @clearpba: true when all pending interrupt events should be cleared
3293  **/
3294 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3295 {
3296         struct i40e_hw *hw = &pf->hw;
3297         u32 val;
3298
3299         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3300               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3301               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3302
3303         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3304         i40e_flush(hw);
3305 }
3306
3307 /**
3308  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3309  * @irq: interrupt number
3310  * @data: pointer to a q_vector
3311  **/
3312 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3313 {
3314         struct i40e_q_vector *q_vector = data;
3315
3316         if (!q_vector->tx.ring && !q_vector->rx.ring)
3317                 return IRQ_HANDLED;
3318
3319         napi_schedule_irqoff(&q_vector->napi);
3320
3321         return IRQ_HANDLED;
3322 }
3323
3324 /**
3325  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3326  * @vsi: the VSI being configured
3327  * @basename: name for the vector
3328  *
3329  * Allocates MSI-X vectors and requests interrupts from the kernel.
3330  **/
3331 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3332 {
3333         int q_vectors = vsi->num_q_vectors;
3334         struct i40e_pf *pf = vsi->back;
3335         int base = vsi->base_vector;
3336         int rx_int_idx = 0;
3337         int tx_int_idx = 0;
3338         int vector, err;
3339
3340         for (vector = 0; vector < q_vectors; vector++) {
3341                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3342
3343                 if (q_vector->tx.ring && q_vector->rx.ring) {
3344                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3345                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3346                         tx_int_idx++;
3347                 } else if (q_vector->rx.ring) {
3348                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3349                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3350                 } else if (q_vector->tx.ring) {
3351                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3352                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3353                 } else {
3354                         /* skip this unused q_vector */
3355                         continue;
3356                 }
3357                 err = request_irq(pf->msix_entries[base + vector].vector,
3358                                   vsi->irq_handler,
3359                                   0,
3360                                   q_vector->name,
3361                                   q_vector);
3362                 if (err) {
3363                         dev_info(&pf->pdev->dev,
3364                                  "MSIX request_irq failed, error: %d\n", err);
3365                         goto free_queue_irqs;
3366                 }
3367                 /* assign the mask for this irq */
3368                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3369                                       &q_vector->affinity_mask);
3370         }
3371
3372         vsi->irqs_ready = true;
3373         return 0;
3374
3375 free_queue_irqs:
3376         while (vector) {
3377                 vector--;
3378                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3379                                       NULL);
3380                 free_irq(pf->msix_entries[base + vector].vector,
3381                          &(vsi->q_vectors[vector]));
3382         }
3383         return err;
3384 }
3385
3386 /**
3387  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3388  * @vsi: the VSI being un-configured
3389  **/
3390 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3391 {
3392         struct i40e_pf *pf = vsi->back;
3393         struct i40e_hw *hw = &pf->hw;
3394         int base = vsi->base_vector;
3395         int i;
3396
3397         for (i = 0; i < vsi->num_queue_pairs; i++) {
3398                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3399                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3400         }
3401
3402         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3403                 for (i = vsi->base_vector;
3404                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3405                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3406
3407                 i40e_flush(hw);
3408                 for (i = 0; i < vsi->num_q_vectors; i++)
3409                         synchronize_irq(pf->msix_entries[i + base].vector);
3410         } else {
3411                 /* Legacy and MSI mode - this stops all interrupt handling */
3412                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3413                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3414                 i40e_flush(hw);
3415                 synchronize_irq(pf->pdev->irq);
3416         }
3417 }
3418
3419 /**
3420  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3421  * @vsi: the VSI being configured
3422  **/
3423 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3424 {
3425         struct i40e_pf *pf = vsi->back;
3426         int i;
3427
3428         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3429                 for (i = 0; i < vsi->num_q_vectors; i++)
3430                         i40e_irq_dynamic_enable(vsi, i);
3431         } else {
3432                 i40e_irq_dynamic_enable_icr0(pf, true);
3433         }
3434
3435         i40e_flush(&pf->hw);
3436         return 0;
3437 }
3438
3439 /**
3440  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3441  * @pf: board private structure
3442  **/
3443 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3444 {
3445         /* Disable ICR 0 */
3446         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3447         i40e_flush(&pf->hw);
3448 }
3449
3450 /**
3451  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3452  * @irq: interrupt number
3453  * @data: pointer to a q_vector
3454  *
3455  * This is the handler used for all MSI/Legacy interrupts, and deals
3456  * with both queue and non-queue interrupts.  This is also used in
3457  * MSIX mode to handle the non-queue interrupts.
3458  **/
3459 static irqreturn_t i40e_intr(int irq, void *data)
3460 {
3461         struct i40e_pf *pf = (struct i40e_pf *)data;
3462         struct i40e_hw *hw = &pf->hw;
3463         irqreturn_t ret = IRQ_NONE;
3464         u32 icr0, icr0_remaining;
3465         u32 val, ena_mask;
3466
3467         icr0 = rd32(hw, I40E_PFINT_ICR0);
3468         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3469
3470         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3471         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3472                 goto enable_intr;
3473
3474         /* if interrupt but no bits showing, must be SWINT */
3475         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3476             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3477                 pf->sw_int_count++;
3478
3479         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3480             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3481                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3482                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3483                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3484         }
3485
3486         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3487         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3488                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3489                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3490
3491                 /* We do not have a way to disarm Queue causes while leaving
3492                  * interrupt enabled for all other causes, ideally
3493                  * interrupt should be disabled while we are in NAPI but
3494                  * this is not a performance path and napi_schedule()
3495                  * can deal with rescheduling.
3496                  */
3497                 if (!test_bit(__I40E_DOWN, &pf->state))
3498                         napi_schedule_irqoff(&q_vector->napi);
3499         }
3500
3501         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3502                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3503                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3504                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3505         }
3506
3507         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3508                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3509                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3510         }
3511
3512         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3513                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3514                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3515         }
3516
3517         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3518                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3519                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3520                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3521                 val = rd32(hw, I40E_GLGEN_RSTAT);
3522                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3523                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3524                 if (val == I40E_RESET_CORER) {
3525                         pf->corer_count++;
3526                 } else if (val == I40E_RESET_GLOBR) {
3527                         pf->globr_count++;
3528                 } else if (val == I40E_RESET_EMPR) {
3529                         pf->empr_count++;
3530                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3531                 }
3532         }
3533
3534         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3535                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3536                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3537                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3538                          rd32(hw, I40E_PFHMC_ERRORINFO),
3539                          rd32(hw, I40E_PFHMC_ERRORDATA));
3540         }
3541
3542         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3543                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3544
3545                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3546                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3547                         i40e_ptp_tx_hwtstamp(pf);
3548                 }
3549         }
3550
3551         /* If a critical error is pending we have no choice but to reset the
3552          * device.
3553          * Report and mask out any remaining unexpected interrupts.
3554          */
3555         icr0_remaining = icr0 & ena_mask;
3556         if (icr0_remaining) {
3557                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3558                          icr0_remaining);
3559                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3560                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3561                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3562                         dev_info(&pf->pdev->dev, "device will be reset\n");
3563                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3564                         i40e_service_event_schedule(pf);
3565                 }
3566                 ena_mask &= ~icr0_remaining;
3567         }
3568         ret = IRQ_HANDLED;
3569
3570 enable_intr:
3571         /* re-enable interrupt causes */
3572         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3573         if (!test_bit(__I40E_DOWN, &pf->state)) {
3574                 i40e_service_event_schedule(pf);
3575                 i40e_irq_dynamic_enable_icr0(pf, false);
3576         }
3577
3578         return ret;
3579 }
3580
3581 /**
3582  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3583  * @tx_ring:  tx ring to clean
3584  * @budget:   how many cleans we're allowed
3585  *
3586  * Returns true if there's any budget left (e.g. the clean is finished)
3587  **/
3588 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3589 {
3590         struct i40e_vsi *vsi = tx_ring->vsi;
3591         u16 i = tx_ring->next_to_clean;
3592         struct i40e_tx_buffer *tx_buf;
3593         struct i40e_tx_desc *tx_desc;
3594
3595         tx_buf = &tx_ring->tx_bi[i];
3596         tx_desc = I40E_TX_DESC(tx_ring, i);
3597         i -= tx_ring->count;
3598
3599         do {
3600                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3601
3602                 /* if next_to_watch is not set then there is no work pending */
3603                 if (!eop_desc)
3604                         break;
3605
3606                 /* prevent any other reads prior to eop_desc */
3607                 read_barrier_depends();
3608
3609                 /* if the descriptor isn't done, no work yet to do */
3610                 if (!(eop_desc->cmd_type_offset_bsz &
3611                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3612                         break;
3613
3614                 /* clear next_to_watch to prevent false hangs */
3615                 tx_buf->next_to_watch = NULL;
3616
3617                 tx_desc->buffer_addr = 0;
3618                 tx_desc->cmd_type_offset_bsz = 0;
3619                 /* move past filter desc */
3620                 tx_buf++;
3621                 tx_desc++;
3622                 i++;
3623                 if (unlikely(!i)) {
3624                         i -= tx_ring->count;
3625                         tx_buf = tx_ring->tx_bi;
3626                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3627                 }
3628                 /* unmap skb header data */
3629                 dma_unmap_single(tx_ring->dev,
3630                                  dma_unmap_addr(tx_buf, dma),
3631                                  dma_unmap_len(tx_buf, len),
3632                                  DMA_TO_DEVICE);
3633                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3634                         kfree(tx_buf->raw_buf);
3635
3636                 tx_buf->raw_buf = NULL;
3637                 tx_buf->tx_flags = 0;
3638                 tx_buf->next_to_watch = NULL;
3639                 dma_unmap_len_set(tx_buf, len, 0);
3640                 tx_desc->buffer_addr = 0;
3641                 tx_desc->cmd_type_offset_bsz = 0;
3642
3643                 /* move us past the eop_desc for start of next FD desc */
3644                 tx_buf++;
3645                 tx_desc++;
3646                 i++;
3647                 if (unlikely(!i)) {
3648                         i -= tx_ring->count;
3649                         tx_buf = tx_ring->tx_bi;
3650                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3651                 }
3652
3653                 /* update budget accounting */
3654                 budget--;
3655         } while (likely(budget));
3656
3657         i += tx_ring->count;
3658         tx_ring->next_to_clean = i;
3659
3660         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3661                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3662
3663         return budget > 0;
3664 }
3665
3666 /**
3667  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3668  * @irq: interrupt number
3669  * @data: pointer to a q_vector
3670  **/
3671 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3672 {
3673         struct i40e_q_vector *q_vector = data;
3674         struct i40e_vsi *vsi;
3675
3676         if (!q_vector->tx.ring)
3677                 return IRQ_HANDLED;
3678
3679         vsi = q_vector->tx.ring->vsi;
3680         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3681
3682         return IRQ_HANDLED;
3683 }
3684
3685 /**
3686  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3687  * @vsi: the VSI being configured
3688  * @v_idx: vector index
3689  * @qp_idx: queue pair index
3690  **/
3691 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3692 {
3693         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3694         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3695         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3696
3697         tx_ring->q_vector = q_vector;
3698         tx_ring->next = q_vector->tx.ring;
3699         q_vector->tx.ring = tx_ring;
3700         q_vector->tx.count++;
3701
3702         rx_ring->q_vector = q_vector;
3703         rx_ring->next = q_vector->rx.ring;
3704         q_vector->rx.ring = rx_ring;
3705         q_vector->rx.count++;
3706 }
3707
3708 /**
3709  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3710  * @vsi: the VSI being configured
3711  *
3712  * This function maps descriptor rings to the queue-specific vectors
3713  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3714  * one vector per queue pair, but on a constrained vector budget, we
3715  * group the queue pairs as "efficiently" as possible.
3716  **/
3717 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3718 {
3719         int qp_remaining = vsi->num_queue_pairs;
3720         int q_vectors = vsi->num_q_vectors;
3721         int num_ringpairs;
3722         int v_start = 0;
3723         int qp_idx = 0;
3724
3725         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3726          * group them so there are multiple queues per vector.
3727          * It is also important to go through all the vectors available to be
3728          * sure that if we don't use all the vectors, that the remaining vectors
3729          * are cleared. This is especially important when decreasing the
3730          * number of queues in use.
3731          */
3732         for (; v_start < q_vectors; v_start++) {
3733                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3734
3735                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3736
3737                 q_vector->num_ringpairs = num_ringpairs;
3738
3739                 q_vector->rx.count = 0;
3740                 q_vector->tx.count = 0;
3741                 q_vector->rx.ring = NULL;
3742                 q_vector->tx.ring = NULL;
3743
3744                 while (num_ringpairs--) {
3745                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3746                         qp_idx++;
3747                         qp_remaining--;
3748                 }
3749         }
3750 }
3751
3752 /**
3753  * i40e_vsi_request_irq - Request IRQ from the OS
3754  * @vsi: the VSI being configured
3755  * @basename: name for the vector
3756  **/
3757 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3758 {
3759         struct i40e_pf *pf = vsi->back;
3760         int err;
3761
3762         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3763                 err = i40e_vsi_request_irq_msix(vsi, basename);
3764         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3765                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3766                                   pf->int_name, pf);
3767         else
3768                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3769                                   pf->int_name, pf);
3770
3771         if (err)
3772                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3773
3774         return err;
3775 }
3776
3777 #ifdef CONFIG_NET_POLL_CONTROLLER
3778 /**
3779  * i40e_netpoll - A Polling 'interrupt' handler
3780  * @netdev: network interface device structure
3781  *
3782  * This is used by netconsole to send skbs without having to re-enable
3783  * interrupts.  It's not called while the normal interrupt routine is executing.
3784  **/
3785 #ifdef I40E_FCOE
3786 void i40e_netpoll(struct net_device *netdev)
3787 #else
3788 static void i40e_netpoll(struct net_device *netdev)
3789 #endif
3790 {
3791         struct i40e_netdev_priv *np = netdev_priv(netdev);
3792         struct i40e_vsi *vsi = np->vsi;
3793         struct i40e_pf *pf = vsi->back;
3794         int i;
3795
3796         /* if interface is down do nothing */
3797         if (test_bit(__I40E_DOWN, &vsi->state))
3798                 return;
3799
3800         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3801                 for (i = 0; i < vsi->num_q_vectors; i++)
3802                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3803         } else {
3804                 i40e_intr(pf->pdev->irq, netdev);
3805         }
3806 }
3807 #endif
3808
3809 /**
3810  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3811  * @pf: the PF being configured
3812  * @pf_q: the PF queue
3813  * @enable: enable or disable state of the queue
3814  *
3815  * This routine will wait for the given Tx queue of the PF to reach the
3816  * enabled or disabled state.
3817  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3818  * multiple retries; else will return 0 in case of success.
3819  **/
3820 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3821 {
3822         int i;
3823         u32 tx_reg;
3824
3825         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3826                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3827                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3828                         break;
3829
3830                 usleep_range(10, 20);
3831         }
3832         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3833                 return -ETIMEDOUT;
3834
3835         return 0;
3836 }
3837
3838 /**
3839  * i40e_vsi_control_tx - Start or stop a VSI's rings
3840  * @vsi: the VSI being configured
3841  * @enable: start or stop the rings
3842  **/
3843 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3844 {
3845         struct i40e_pf *pf = vsi->back;
3846         struct i40e_hw *hw = &pf->hw;
3847         int i, j, pf_q, ret = 0;
3848         u32 tx_reg;
3849
3850         pf_q = vsi->base_queue;
3851         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3852
3853                 /* warn the TX unit of coming changes */
3854                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3855                 if (!enable)
3856                         usleep_range(10, 20);
3857
3858                 for (j = 0; j < 50; j++) {
3859                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3860                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3861                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3862                                 break;
3863                         usleep_range(1000, 2000);
3864                 }
3865                 /* Skip if the queue is already in the requested state */
3866                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3867                         continue;
3868
3869                 /* turn on/off the queue */
3870                 if (enable) {
3871                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3872                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3873                 } else {
3874                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3875                 }
3876
3877                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3878                 /* No waiting for the Tx queue to disable */
3879                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3880                         continue;
3881
3882                 /* wait for the change to finish */
3883                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3884                 if (ret) {
3885                         dev_info(&pf->pdev->dev,
3886                                  "VSI seid %d Tx ring %d %sable timeout\n",
3887                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3888                         break;
3889                 }
3890         }
3891
3892         if (hw->revision_id == 0)
3893                 mdelay(50);
3894         return ret;
3895 }
3896
3897 /**
3898  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3899  * @pf: the PF being configured
3900  * @pf_q: the PF queue
3901  * @enable: enable or disable state of the queue
3902  *
3903  * This routine will wait for the given Rx queue of the PF to reach the
3904  * enabled or disabled state.
3905  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3906  * multiple retries; else will return 0 in case of success.
3907  **/
3908 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3909 {
3910         int i;
3911         u32 rx_reg;
3912
3913         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3914                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3915                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3916                         break;
3917
3918                 usleep_range(10, 20);
3919         }
3920         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3921                 return -ETIMEDOUT;
3922
3923         return 0;
3924 }
3925
3926 /**
3927  * i40e_vsi_control_rx - Start or stop a VSI's rings
3928  * @vsi: the VSI being configured
3929  * @enable: start or stop the rings
3930  **/
3931 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3932 {
3933         struct i40e_pf *pf = vsi->back;
3934         struct i40e_hw *hw = &pf->hw;
3935         int i, j, pf_q, ret = 0;
3936         u32 rx_reg;
3937
3938         pf_q = vsi->base_queue;
3939         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3940                 for (j = 0; j < 50; j++) {
3941                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3942                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3943                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3944                                 break;
3945                         usleep_range(1000, 2000);
3946                 }
3947
3948                 /* Skip if the queue is already in the requested state */
3949                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3950                         continue;
3951
3952                 /* turn on/off the queue */
3953                 if (enable)
3954                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3955                 else
3956                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3957                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3958                 /* No waiting for the Tx queue to disable */
3959                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3960                         continue;
3961
3962                 /* wait for the change to finish */
3963                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3964                 if (ret) {
3965                         dev_info(&pf->pdev->dev,
3966                                  "VSI seid %d Rx ring %d %sable timeout\n",
3967                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3968                         break;
3969                 }
3970         }
3971
3972         return ret;
3973 }
3974
3975 /**
3976  * i40e_vsi_control_rings - Start or stop a VSI's rings
3977  * @vsi: the VSI being configured
3978  * @enable: start or stop the rings
3979  **/
3980 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3981 {
3982         int ret = 0;
3983
3984         /* do rx first for enable and last for disable */
3985         if (request) {
3986                 ret = i40e_vsi_control_rx(vsi, request);
3987                 if (ret)
3988                         return ret;
3989                 ret = i40e_vsi_control_tx(vsi, request);
3990         } else {
3991                 /* Ignore return value, we need to shutdown whatever we can */
3992                 i40e_vsi_control_tx(vsi, request);
3993                 i40e_vsi_control_rx(vsi, request);
3994         }
3995
3996         return ret;
3997 }
3998
3999 /**
4000  * i40e_vsi_free_irq - Free the irq association with the OS
4001  * @vsi: the VSI being configured
4002  **/
4003 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4004 {
4005         struct i40e_pf *pf = vsi->back;
4006         struct i40e_hw *hw = &pf->hw;
4007         int base = vsi->base_vector;
4008         u32 val, qp;
4009         int i;
4010
4011         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4012                 if (!vsi->q_vectors)
4013                         return;
4014
4015                 if (!vsi->irqs_ready)
4016                         return;
4017
4018                 vsi->irqs_ready = false;
4019                 for (i = 0; i < vsi->num_q_vectors; i++) {
4020                         u16 vector = i + base;
4021
4022                         /* free only the irqs that were actually requested */
4023                         if (!vsi->q_vectors[i] ||
4024                             !vsi->q_vectors[i]->num_ringpairs)
4025                                 continue;
4026
4027                         /* clear the affinity_mask in the IRQ descriptor */
4028                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4029                                               NULL);
4030                         synchronize_irq(pf->msix_entries[vector].vector);
4031                         free_irq(pf->msix_entries[vector].vector,
4032                                  vsi->q_vectors[i]);
4033
4034                         /* Tear down the interrupt queue link list
4035                          *
4036                          * We know that they come in pairs and always
4037                          * the Rx first, then the Tx.  To clear the
4038                          * link list, stick the EOL value into the
4039                          * next_q field of the registers.
4040                          */
4041                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4042                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4043                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4044                         val |= I40E_QUEUE_END_OF_LIST
4045                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4046                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4047
4048                         while (qp != I40E_QUEUE_END_OF_LIST) {
4049                                 u32 next;
4050
4051                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4052
4053                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4054                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4055                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4056                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4057
4058                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4059                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4060
4061                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4062
4063                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4064
4065                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4066                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4067
4068                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4069                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4070                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4071                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4072
4073                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4074                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4075
4076                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4077                                 qp = next;
4078                         }
4079                 }
4080         } else {
4081                 free_irq(pf->pdev->irq, pf);
4082
4083                 val = rd32(hw, I40E_PFINT_LNKLST0);
4084                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4085                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4086                 val |= I40E_QUEUE_END_OF_LIST
4087                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4088                 wr32(hw, I40E_PFINT_LNKLST0, val);
4089
4090                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4091                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4092                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4093                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4094                          I40E_QINT_RQCTL_INTEVENT_MASK);
4095
4096                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4097                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4098
4099                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4100
4101                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4102
4103                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4104                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4105                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4106                          I40E_QINT_TQCTL_INTEVENT_MASK);
4107
4108                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4109                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4110
4111                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4112         }
4113 }
4114
4115 /**
4116  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4117  * @vsi: the VSI being configured
4118  * @v_idx: Index of vector to be freed
4119  *
4120  * This function frees the memory allocated to the q_vector.  In addition if
4121  * NAPI is enabled it will delete any references to the NAPI struct prior
4122  * to freeing the q_vector.
4123  **/
4124 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4125 {
4126         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4127         struct i40e_ring *ring;
4128
4129         if (!q_vector)
4130                 return;
4131
4132         /* disassociate q_vector from rings */
4133         i40e_for_each_ring(ring, q_vector->tx)
4134                 ring->q_vector = NULL;
4135
4136         i40e_for_each_ring(ring, q_vector->rx)
4137                 ring->q_vector = NULL;
4138
4139         /* only VSI w/ an associated netdev is set up w/ NAPI */
4140         if (vsi->netdev)
4141                 netif_napi_del(&q_vector->napi);
4142
4143         vsi->q_vectors[v_idx] = NULL;
4144
4145         kfree_rcu(q_vector, rcu);
4146 }
4147
4148 /**
4149  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4150  * @vsi: the VSI being un-configured
4151  *
4152  * This frees the memory allocated to the q_vectors and
4153  * deletes references to the NAPI struct.
4154  **/
4155 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4156 {
4157         int v_idx;
4158
4159         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4160                 i40e_free_q_vector(vsi, v_idx);
4161 }
4162
4163 /**
4164  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4165  * @pf: board private structure
4166  **/
4167 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4168 {
4169         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4170         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4171                 pci_disable_msix(pf->pdev);
4172                 kfree(pf->msix_entries);
4173                 pf->msix_entries = NULL;
4174                 kfree(pf->irq_pile);
4175                 pf->irq_pile = NULL;
4176         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4177                 pci_disable_msi(pf->pdev);
4178         }
4179         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4180 }
4181
4182 /**
4183  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4184  * @pf: board private structure
4185  *
4186  * We go through and clear interrupt specific resources and reset the structure
4187  * to pre-load conditions
4188  **/
4189 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4190 {
4191         int i;
4192
4193         i40e_stop_misc_vector(pf);
4194         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4195                 synchronize_irq(pf->msix_entries[0].vector);
4196                 free_irq(pf->msix_entries[0].vector, pf);
4197         }
4198
4199         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4200                       I40E_IWARP_IRQ_PILE_ID);
4201
4202         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4203         for (i = 0; i < pf->num_alloc_vsi; i++)
4204                 if (pf->vsi[i])
4205                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4206         i40e_reset_interrupt_capability(pf);
4207 }
4208
4209 /**
4210  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4211  * @vsi: the VSI being configured
4212  **/
4213 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4214 {
4215         int q_idx;
4216
4217         if (!vsi->netdev)
4218                 return;
4219
4220         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4221                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4222 }
4223
4224 /**
4225  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4226  * @vsi: the VSI being configured
4227  **/
4228 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4229 {
4230         int q_idx;
4231
4232         if (!vsi->netdev)
4233                 return;
4234
4235         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4236                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4237 }
4238
4239 /**
4240  * i40e_vsi_close - Shut down a VSI
4241  * @vsi: the vsi to be quelled
4242  **/
4243 static void i40e_vsi_close(struct i40e_vsi *vsi)
4244 {
4245         bool reset = false;
4246
4247         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4248                 i40e_down(vsi);
4249         i40e_vsi_free_irq(vsi);
4250         i40e_vsi_free_tx_resources(vsi);
4251         i40e_vsi_free_rx_resources(vsi);
4252         vsi->current_netdev_flags = 0;
4253         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4254                 reset = true;
4255         i40e_notify_client_of_netdev_close(vsi, reset);
4256 }
4257
4258 /**
4259  * i40e_quiesce_vsi - Pause a given VSI
4260  * @vsi: the VSI being paused
4261  **/
4262 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4263 {
4264         if (test_bit(__I40E_DOWN, &vsi->state))
4265                 return;
4266
4267         /* No need to disable FCoE VSI when Tx suspended */
4268         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4269             vsi->type == I40E_VSI_FCOE) {
4270                 dev_dbg(&vsi->back->pdev->dev,
4271                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4272                 return;
4273         }
4274
4275         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4276         if (vsi->netdev && netif_running(vsi->netdev))
4277                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4278         else
4279                 i40e_vsi_close(vsi);
4280 }
4281
4282 /**
4283  * i40e_unquiesce_vsi - Resume a given VSI
4284  * @vsi: the VSI being resumed
4285  **/
4286 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4287 {
4288         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4289                 return;
4290
4291         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4292         if (vsi->netdev && netif_running(vsi->netdev))
4293                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4294         else
4295                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4296 }
4297
4298 /**
4299  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4300  * @pf: the PF
4301  **/
4302 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4303 {
4304         int v;
4305
4306         for (v = 0; v < pf->num_alloc_vsi; v++) {
4307                 if (pf->vsi[v])
4308                         i40e_quiesce_vsi(pf->vsi[v]);
4309         }
4310 }
4311
4312 /**
4313  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4314  * @pf: the PF
4315  **/
4316 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4317 {
4318         int v;
4319
4320         for (v = 0; v < pf->num_alloc_vsi; v++) {
4321                 if (pf->vsi[v])
4322                         i40e_unquiesce_vsi(pf->vsi[v]);
4323         }
4324 }
4325
4326 #ifdef CONFIG_I40E_DCB
4327 /**
4328  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4329  * @vsi: the VSI being configured
4330  *
4331  * This function waits for the given VSI's queues to be disabled.
4332  **/
4333 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4334 {
4335         struct i40e_pf *pf = vsi->back;
4336         int i, pf_q, ret;
4337
4338         pf_q = vsi->base_queue;
4339         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4340                 /* Check and wait for the disable status of the queue */
4341                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4342                 if (ret) {
4343                         dev_info(&pf->pdev->dev,
4344                                  "VSI seid %d Tx ring %d disable timeout\n",
4345                                  vsi->seid, pf_q);
4346                         return ret;
4347                 }
4348         }
4349
4350         pf_q = vsi->base_queue;
4351         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4352                 /* Check and wait for the disable status of the queue */
4353                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4354                 if (ret) {
4355                         dev_info(&pf->pdev->dev,
4356                                  "VSI seid %d Rx ring %d disable timeout\n",
4357                                  vsi->seid, pf_q);
4358                         return ret;
4359                 }
4360         }
4361
4362         return 0;
4363 }
4364
4365 /**
4366  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4367  * @pf: the PF
4368  *
4369  * This function waits for the queues to be in disabled state for all the
4370  * VSIs that are managed by this PF.
4371  **/
4372 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4373 {
4374         int v, ret = 0;
4375
4376         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4377                 /* No need to wait for FCoE VSI queues */
4378                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4379                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4380                         if (ret)
4381                                 break;
4382                 }
4383         }
4384
4385         return ret;
4386 }
4387
4388 #endif
4389
4390 /**
4391  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4392  * @q_idx: TX queue number
4393  * @vsi: Pointer to VSI struct
4394  *
4395  * This function checks specified queue for given VSI. Detects hung condition.
4396  * Sets hung bit since it is two step process. Before next run of service task
4397  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4398  * hung condition remain unchanged and during subsequent run, this function
4399  * issues SW interrupt to recover from hung condition.
4400  **/
4401 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4402 {
4403         struct i40e_ring *tx_ring = NULL;
4404         struct i40e_pf  *pf;
4405         u32 head, val, tx_pending_hw;
4406         int i;
4407
4408         pf = vsi->back;
4409
4410         /* now that we have an index, find the tx_ring struct */
4411         for (i = 0; i < vsi->num_queue_pairs; i++) {
4412                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4413                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4414                                 tx_ring = vsi->tx_rings[i];
4415                                 break;
4416                         }
4417                 }
4418         }
4419
4420         if (!tx_ring)
4421                 return;
4422
4423         /* Read interrupt register */
4424         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4425                 val = rd32(&pf->hw,
4426                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4427                                                tx_ring->vsi->base_vector - 1));
4428         else
4429                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4430
4431         head = i40e_get_head(tx_ring);
4432
4433         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4434
4435         /* HW is done executing descriptors, updated HEAD write back,
4436          * but SW hasn't processed those descriptors. If interrupt is
4437          * not generated from this point ON, it could result into
4438          * dev_watchdog detecting timeout on those netdev_queue,
4439          * hence proactively trigger SW interrupt.
4440          */
4441         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4442                 /* NAPI Poll didn't run and clear since it was set */
4443                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4444                                        &tx_ring->q_vector->hung_detected)) {
4445                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4446                                     vsi->seid, q_idx, tx_pending_hw,
4447                                     tx_ring->next_to_clean, head,
4448                                     tx_ring->next_to_use,
4449                                     readl(tx_ring->tail));
4450                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4451                                     vsi->seid, q_idx, val);
4452                         i40e_force_wb(vsi, tx_ring->q_vector);
4453                 } else {
4454                         /* First Chance - detected possible hung */
4455                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4456                                 &tx_ring->q_vector->hung_detected);
4457                 }
4458         }
4459
4460         /* This is the case where we have interrupts missing,
4461          * so the tx_pending in HW will most likely be 0, but we
4462          * will have tx_pending in SW since the WB happened but the
4463          * interrupt got lost.
4464          */
4465         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4466             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4467                 if (napi_reschedule(&tx_ring->q_vector->napi))
4468                         tx_ring->tx_stats.tx_lost_interrupt++;
4469         }
4470 }
4471
4472 /**
4473  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4474  * @pf:  pointer to PF struct
4475  *
4476  * LAN VSI has netdev and netdev has TX queues. This function is to check
4477  * each of those TX queues if they are hung, trigger recovery by issuing
4478  * SW interrupt.
4479  **/
4480 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4481 {
4482         struct net_device *netdev;
4483         struct i40e_vsi *vsi;
4484         int i;
4485
4486         /* Only for LAN VSI */
4487         vsi = pf->vsi[pf->lan_vsi];
4488
4489         if (!vsi)
4490                 return;
4491
4492         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4493         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4494             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4495                 return;
4496
4497         /* Make sure type is MAIN VSI */
4498         if (vsi->type != I40E_VSI_MAIN)
4499                 return;
4500
4501         netdev = vsi->netdev;
4502         if (!netdev)
4503                 return;
4504
4505         /* Bail out if netif_carrier is not OK */
4506         if (!netif_carrier_ok(netdev))
4507                 return;
4508
4509         /* Go thru' TX queues for netdev */
4510         for (i = 0; i < netdev->num_tx_queues; i++) {
4511                 struct netdev_queue *q;
4512
4513                 q = netdev_get_tx_queue(netdev, i);
4514                 if (q)
4515                         i40e_detect_recover_hung_queue(i, vsi);
4516         }
4517 }
4518
4519 /**
4520  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4521  * @pf: pointer to PF
4522  *
4523  * Get TC map for ISCSI PF type that will include iSCSI TC
4524  * and LAN TC.
4525  **/
4526 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4527 {
4528         struct i40e_dcb_app_priority_table app;
4529         struct i40e_hw *hw = &pf->hw;
4530         u8 enabled_tc = 1; /* TC0 is always enabled */
4531         u8 tc, i;
4532         /* Get the iSCSI APP TLV */
4533         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4534
4535         for (i = 0; i < dcbcfg->numapps; i++) {
4536                 app = dcbcfg->app[i];
4537                 if (app.selector == I40E_APP_SEL_TCPIP &&
4538                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4539                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4540                         enabled_tc |= BIT(tc);
4541                         break;
4542                 }
4543         }
4544
4545         return enabled_tc;
4546 }
4547
4548 /**
4549  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4550  * @dcbcfg: the corresponding DCBx configuration structure
4551  *
4552  * Return the number of TCs from given DCBx configuration
4553  **/
4554 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4555 {
4556         int i, tc_unused = 0;
4557         u8 num_tc = 0;
4558         u8 ret = 0;
4559
4560         /* Scan the ETS Config Priority Table to find
4561          * traffic class enabled for a given priority
4562          * and create a bitmask of enabled TCs
4563          */
4564         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4565                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4566
4567         /* Now scan the bitmask to check for
4568          * contiguous TCs starting with TC0
4569          */
4570         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4571                 if (num_tc & BIT(i)) {
4572                         if (!tc_unused) {
4573                                 ret++;
4574                         } else {
4575                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4576                                 return 1;
4577                         }
4578                 } else {
4579                         tc_unused = 1;
4580                 }
4581         }
4582
4583         /* There is always at least TC0 */
4584         if (!ret)
4585                 ret = 1;
4586
4587         return ret;
4588 }
4589
4590 /**
4591  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4592  * @dcbcfg: the corresponding DCBx configuration structure
4593  *
4594  * Query the current DCB configuration and return the number of
4595  * traffic classes enabled from the given DCBX config
4596  **/
4597 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4598 {
4599         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4600         u8 enabled_tc = 1;
4601         u8 i;
4602
4603         for (i = 0; i < num_tc; i++)
4604                 enabled_tc |= BIT(i);
4605
4606         return enabled_tc;
4607 }
4608
4609 /**
4610  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4611  * @pf: PF being queried
4612  *
4613  * Return number of traffic classes enabled for the given PF
4614  **/
4615 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4616 {
4617         struct i40e_hw *hw = &pf->hw;
4618         u8 i, enabled_tc = 1;
4619         u8 num_tc = 0;
4620         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4621
4622         /* If DCB is not enabled then always in single TC */
4623         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4624                 return 1;
4625
4626         /* SFP mode will be enabled for all TCs on port */
4627         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4628                 return i40e_dcb_get_num_tc(dcbcfg);
4629
4630         /* MFP mode return count of enabled TCs for this PF */
4631         if (pf->hw.func_caps.iscsi)
4632                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4633         else
4634                 return 1; /* Only TC0 */
4635
4636         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4637                 if (enabled_tc & BIT(i))
4638                         num_tc++;
4639         }
4640         return num_tc;
4641 }
4642
4643 /**
4644  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4645  * @pf: PF being queried
4646  *
4647  * Return a bitmap for enabled traffic classes for this PF.
4648  **/
4649 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4650 {
4651         /* If DCB is not enabled for this PF then just return default TC */
4652         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4653                 return I40E_DEFAULT_TRAFFIC_CLASS;
4654
4655         /* SFP mode we want PF to be enabled for all TCs */
4656         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4657                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4658
4659         /* MFP enabled and iSCSI PF type */
4660         if (pf->hw.func_caps.iscsi)
4661                 return i40e_get_iscsi_tc_map(pf);
4662         else
4663                 return I40E_DEFAULT_TRAFFIC_CLASS;
4664 }
4665
4666 /**
4667  * i40e_vsi_get_bw_info - Query VSI BW Information
4668  * @vsi: the VSI being queried
4669  *
4670  * Returns 0 on success, negative value on failure
4671  **/
4672 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4673 {
4674         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4675         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4676         struct i40e_pf *pf = vsi->back;
4677         struct i40e_hw *hw = &pf->hw;
4678         i40e_status ret;
4679         u32 tc_bw_max;
4680         int i;
4681
4682         /* Get the VSI level BW configuration */
4683         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4684         if (ret) {
4685                 dev_info(&pf->pdev->dev,
4686                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4687                          i40e_stat_str(&pf->hw, ret),
4688                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4689                 return -EINVAL;
4690         }
4691
4692         /* Get the VSI level BW configuration per TC */
4693         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4694                                                NULL);
4695         if (ret) {
4696                 dev_info(&pf->pdev->dev,
4697                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4698                          i40e_stat_str(&pf->hw, ret),
4699                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4700                 return -EINVAL;
4701         }
4702
4703         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4704                 dev_info(&pf->pdev->dev,
4705                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4706                          bw_config.tc_valid_bits,
4707                          bw_ets_config.tc_valid_bits);
4708                 /* Still continuing */
4709         }
4710
4711         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4712         vsi->bw_max_quanta = bw_config.max_bw;
4713         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4714                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4715         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4716                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4717                 vsi->bw_ets_limit_credits[i] =
4718                                         le16_to_cpu(bw_ets_config.credits[i]);
4719                 /* 3 bits out of 4 for each TC */
4720                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4721         }
4722
4723         return 0;
4724 }
4725
4726 /**
4727  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4728  * @vsi: the VSI being configured
4729  * @enabled_tc: TC bitmap
4730  * @bw_credits: BW shared credits per TC
4731  *
4732  * Returns 0 on success, negative value on failure
4733  **/
4734 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4735                                        u8 *bw_share)
4736 {
4737         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4738         i40e_status ret;
4739         int i;
4740
4741         bw_data.tc_valid_bits = enabled_tc;
4742         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4743                 bw_data.tc_bw_credits[i] = bw_share[i];
4744
4745         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4746                                        NULL);
4747         if (ret) {
4748                 dev_info(&vsi->back->pdev->dev,
4749                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4750                          vsi->back->hw.aq.asq_last_status);
4751                 return -EINVAL;
4752         }
4753
4754         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4755                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4756
4757         return 0;
4758 }
4759
4760 /**
4761  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4762  * @vsi: the VSI being configured
4763  * @enabled_tc: TC map to be enabled
4764  *
4765  **/
4766 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4767 {
4768         struct net_device *netdev = vsi->netdev;
4769         struct i40e_pf *pf = vsi->back;
4770         struct i40e_hw *hw = &pf->hw;
4771         u8 netdev_tc = 0;
4772         int i;
4773         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4774
4775         if (!netdev)
4776                 return;
4777
4778         if (!enabled_tc) {
4779                 netdev_reset_tc(netdev);
4780                 return;
4781         }
4782
4783         /* Set up actual enabled TCs on the VSI */
4784         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4785                 return;
4786
4787         /* set per TC queues for the VSI */
4788         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4789                 /* Only set TC queues for enabled tcs
4790                  *
4791                  * e.g. For a VSI that has TC0 and TC3 enabled the
4792                  * enabled_tc bitmap would be 0x00001001; the driver
4793                  * will set the numtc for netdev as 2 that will be
4794                  * referenced by the netdev layer as TC 0 and 1.
4795                  */
4796                 if (vsi->tc_config.enabled_tc & BIT(i))
4797                         netdev_set_tc_queue(netdev,
4798                                         vsi->tc_config.tc_info[i].netdev_tc,
4799                                         vsi->tc_config.tc_info[i].qcount,
4800                                         vsi->tc_config.tc_info[i].qoffset);
4801         }
4802
4803         /* Assign UP2TC map for the VSI */
4804         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4805                 /* Get the actual TC# for the UP */
4806                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4807                 /* Get the mapped netdev TC# for the UP */
4808                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4809                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4810         }
4811 }
4812
4813 /**
4814  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4815  * @vsi: the VSI being configured
4816  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4817  **/
4818 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4819                                       struct i40e_vsi_context *ctxt)
4820 {
4821         /* copy just the sections touched not the entire info
4822          * since not all sections are valid as returned by
4823          * update vsi params
4824          */
4825         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4826         memcpy(&vsi->info.queue_mapping,
4827                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4828         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4829                sizeof(vsi->info.tc_mapping));
4830 }
4831
4832 /**
4833  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4834  * @vsi: VSI to be configured
4835  * @enabled_tc: TC bitmap
4836  *
4837  * This configures a particular VSI for TCs that are mapped to the
4838  * given TC bitmap. It uses default bandwidth share for TCs across
4839  * VSIs to configure TC for a particular VSI.
4840  *
4841  * NOTE:
4842  * It is expected that the VSI queues have been quisced before calling
4843  * this function.
4844  **/
4845 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4846 {
4847         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4848         struct i40e_vsi_context ctxt;
4849         int ret = 0;
4850         int i;
4851
4852         /* Check if enabled_tc is same as existing or new TCs */
4853         if (vsi->tc_config.enabled_tc == enabled_tc)
4854                 return ret;
4855
4856         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4857         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4858                 if (enabled_tc & BIT(i))
4859                         bw_share[i] = 1;
4860         }
4861
4862         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4863         if (ret) {
4864                 dev_info(&vsi->back->pdev->dev,
4865                          "Failed configuring TC map %d for VSI %d\n",
4866                          enabled_tc, vsi->seid);
4867                 goto out;
4868         }
4869
4870         /* Update Queue Pairs Mapping for currently enabled UPs */
4871         ctxt.seid = vsi->seid;
4872         ctxt.pf_num = vsi->back->hw.pf_id;
4873         ctxt.vf_num = 0;
4874         ctxt.uplink_seid = vsi->uplink_seid;
4875         ctxt.info = vsi->info;
4876         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4877
4878         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4879                 ctxt.info.valid_sections |=
4880                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4881                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4882         }
4883
4884         /* Update the VSI after updating the VSI queue-mapping information */
4885         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4886         if (ret) {
4887                 dev_info(&vsi->back->pdev->dev,
4888                          "Update vsi tc config failed, err %s aq_err %s\n",
4889                          i40e_stat_str(&vsi->back->hw, ret),
4890                          i40e_aq_str(&vsi->back->hw,
4891                                      vsi->back->hw.aq.asq_last_status));
4892                 goto out;
4893         }
4894         /* update the local VSI info with updated queue map */
4895         i40e_vsi_update_queue_map(vsi, &ctxt);
4896         vsi->info.valid_sections = 0;
4897
4898         /* Update current VSI BW information */
4899         ret = i40e_vsi_get_bw_info(vsi);
4900         if (ret) {
4901                 dev_info(&vsi->back->pdev->dev,
4902                          "Failed updating vsi bw info, err %s aq_err %s\n",
4903                          i40e_stat_str(&vsi->back->hw, ret),
4904                          i40e_aq_str(&vsi->back->hw,
4905                                      vsi->back->hw.aq.asq_last_status));
4906                 goto out;
4907         }
4908
4909         /* Update the netdev TC setup */
4910         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4911 out:
4912         return ret;
4913 }
4914
4915 /**
4916  * i40e_veb_config_tc - Configure TCs for given VEB
4917  * @veb: given VEB
4918  * @enabled_tc: TC bitmap
4919  *
4920  * Configures given TC bitmap for VEB (switching) element
4921  **/
4922 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4923 {
4924         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4925         struct i40e_pf *pf = veb->pf;
4926         int ret = 0;
4927         int i;
4928
4929         /* No TCs or already enabled TCs just return */
4930         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4931                 return ret;
4932
4933         bw_data.tc_valid_bits = enabled_tc;
4934         /* bw_data.absolute_credits is not set (relative) */
4935
4936         /* Enable ETS TCs with equal BW Share for now */
4937         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4938                 if (enabled_tc & BIT(i))
4939                         bw_data.tc_bw_share_credits[i] = 1;
4940         }
4941
4942         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4943                                                    &bw_data, NULL);
4944         if (ret) {
4945                 dev_info(&pf->pdev->dev,
4946                          "VEB bw config failed, err %s aq_err %s\n",
4947                          i40e_stat_str(&pf->hw, ret),
4948                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4949                 goto out;
4950         }
4951
4952         /* Update the BW information */
4953         ret = i40e_veb_get_bw_info(veb);
4954         if (ret) {
4955                 dev_info(&pf->pdev->dev,
4956                          "Failed getting veb bw config, err %s aq_err %s\n",
4957                          i40e_stat_str(&pf->hw, ret),
4958                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4959         }
4960
4961 out:
4962         return ret;
4963 }
4964
4965 #ifdef CONFIG_I40E_DCB
4966 /**
4967  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4968  * @pf: PF struct
4969  *
4970  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4971  * the caller would've quiesce all the VSIs before calling
4972  * this function
4973  **/
4974 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4975 {
4976         u8 tc_map = 0;
4977         int ret;
4978         u8 v;
4979
4980         /* Enable the TCs available on PF to all VEBs */
4981         tc_map = i40e_pf_get_tc_map(pf);
4982         for (v = 0; v < I40E_MAX_VEB; v++) {
4983                 if (!pf->veb[v])
4984                         continue;
4985                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4986                 if (ret) {
4987                         dev_info(&pf->pdev->dev,
4988                                  "Failed configuring TC for VEB seid=%d\n",
4989                                  pf->veb[v]->seid);
4990                         /* Will try to configure as many components */
4991                 }
4992         }
4993
4994         /* Update each VSI */
4995         for (v = 0; v < pf->num_alloc_vsi; v++) {
4996                 if (!pf->vsi[v])
4997                         continue;
4998
4999                 /* - Enable all TCs for the LAN VSI
5000 #ifdef I40E_FCOE
5001                  * - For FCoE VSI only enable the TC configured
5002                  *   as per the APP TLV
5003 #endif
5004                  * - For all others keep them at TC0 for now
5005                  */
5006                 if (v == pf->lan_vsi)
5007                         tc_map = i40e_pf_get_tc_map(pf);
5008                 else
5009                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5010 #ifdef I40E_FCOE
5011                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5012                         tc_map = i40e_get_fcoe_tc_map(pf);
5013 #endif /* #ifdef I40E_FCOE */
5014
5015                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5016                 if (ret) {
5017                         dev_info(&pf->pdev->dev,
5018                                  "Failed configuring TC for VSI seid=%d\n",
5019                                  pf->vsi[v]->seid);
5020                         /* Will try to configure as many components */
5021                 } else {
5022                         /* Re-configure VSI vectors based on updated TC map */
5023                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5024                         if (pf->vsi[v]->netdev)
5025                                 i40e_dcbnl_set_all(pf->vsi[v]);
5026                 }
5027         }
5028 }
5029
5030 /**
5031  * i40e_resume_port_tx - Resume port Tx
5032  * @pf: PF struct
5033  *
5034  * Resume a port's Tx and issue a PF reset in case of failure to
5035  * resume.
5036  **/
5037 static int i40e_resume_port_tx(struct i40e_pf *pf)
5038 {
5039         struct i40e_hw *hw = &pf->hw;
5040         int ret;
5041
5042         ret = i40e_aq_resume_port_tx(hw, NULL);
5043         if (ret) {
5044                 dev_info(&pf->pdev->dev,
5045                          "Resume Port Tx failed, err %s aq_err %s\n",
5046                           i40e_stat_str(&pf->hw, ret),
5047                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5048                 /* Schedule PF reset to recover */
5049                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5050                 i40e_service_event_schedule(pf);
5051         }
5052
5053         return ret;
5054 }
5055
5056 /**
5057  * i40e_init_pf_dcb - Initialize DCB configuration
5058  * @pf: PF being configured
5059  *
5060  * Query the current DCB configuration and cache it
5061  * in the hardware structure
5062  **/
5063 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5064 {
5065         struct i40e_hw *hw = &pf->hw;
5066         int err = 0;
5067
5068         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5069         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5070                 goto out;
5071
5072         /* Get the initial DCB configuration */
5073         err = i40e_init_dcb(hw);
5074         if (!err) {
5075                 /* Device/Function is not DCBX capable */
5076                 if ((!hw->func_caps.dcb) ||
5077                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5078                         dev_info(&pf->pdev->dev,
5079                                  "DCBX offload is not supported or is disabled for this PF.\n");
5080
5081                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5082                                 goto out;
5083
5084                 } else {
5085                         /* When status is not DISABLED then DCBX in FW */
5086                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5087                                        DCB_CAP_DCBX_VER_IEEE;
5088
5089                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5090                         /* Enable DCB tagging only when more than one TC
5091                          * or explicitly disable if only one TC
5092                          */
5093                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5094                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5095                         else
5096                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5097                         dev_dbg(&pf->pdev->dev,
5098                                 "DCBX offload is supported for this PF.\n");
5099                 }
5100         } else {
5101                 dev_info(&pf->pdev->dev,
5102                          "Query for DCB configuration failed, err %s aq_err %s\n",
5103                          i40e_stat_str(&pf->hw, err),
5104                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5105         }
5106
5107 out:
5108         return err;
5109 }
5110 #endif /* CONFIG_I40E_DCB */
5111 #define SPEED_SIZE 14
5112 #define FC_SIZE 8
5113 /**
5114  * i40e_print_link_message - print link up or down
5115  * @vsi: the VSI for which link needs a message
5116  */
5117 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5118 {
5119         char *speed = "Unknown";
5120         char *fc = "Unknown";
5121
5122         if (vsi->current_isup == isup)
5123                 return;
5124         vsi->current_isup = isup;
5125         if (!isup) {
5126                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5127                 return;
5128         }
5129
5130         /* Warn user if link speed on NPAR enabled partition is not at
5131          * least 10GB
5132          */
5133         if (vsi->back->hw.func_caps.npar_enable &&
5134             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5135              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5136                 netdev_warn(vsi->netdev,
5137                             "The partition detected link speed that is less than 10Gbps\n");
5138
5139         switch (vsi->back->hw.phy.link_info.link_speed) {
5140         case I40E_LINK_SPEED_40GB:
5141                 speed = "40 G";
5142                 break;
5143         case I40E_LINK_SPEED_20GB:
5144                 speed = "20 G";
5145                 break;
5146         case I40E_LINK_SPEED_10GB:
5147                 speed = "10 G";
5148                 break;
5149         case I40E_LINK_SPEED_1GB:
5150                 speed = "1000 M";
5151                 break;
5152         case I40E_LINK_SPEED_100MB:
5153                 speed = "100 M";
5154                 break;
5155         default:
5156                 break;
5157         }
5158
5159         switch (vsi->back->hw.fc.current_mode) {
5160         case I40E_FC_FULL:
5161                 fc = "RX/TX";
5162                 break;
5163         case I40E_FC_TX_PAUSE:
5164                 fc = "TX";
5165                 break;
5166         case I40E_FC_RX_PAUSE:
5167                 fc = "RX";
5168                 break;
5169         default:
5170                 fc = "None";
5171                 break;
5172         }
5173
5174         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5175                     speed, fc);
5176 }
5177
5178 /**
5179  * i40e_up_complete - Finish the last steps of bringing up a connection
5180  * @vsi: the VSI being configured
5181  **/
5182 static int i40e_up_complete(struct i40e_vsi *vsi)
5183 {
5184         struct i40e_pf *pf = vsi->back;
5185         int err;
5186
5187         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5188                 i40e_vsi_configure_msix(vsi);
5189         else
5190                 i40e_configure_msi_and_legacy(vsi);
5191
5192         /* start rings */
5193         err = i40e_vsi_control_rings(vsi, true);
5194         if (err)
5195                 return err;
5196
5197         clear_bit(__I40E_DOWN, &vsi->state);
5198         i40e_napi_enable_all(vsi);
5199         i40e_vsi_enable_irq(vsi);
5200
5201         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5202             (vsi->netdev)) {
5203                 i40e_print_link_message(vsi, true);
5204                 netif_tx_start_all_queues(vsi->netdev);
5205                 netif_carrier_on(vsi->netdev);
5206         } else if (vsi->netdev) {
5207                 i40e_print_link_message(vsi, false);
5208                 /* need to check for qualified module here*/
5209                 if ((pf->hw.phy.link_info.link_info &
5210                         I40E_AQ_MEDIA_AVAILABLE) &&
5211                     (!(pf->hw.phy.link_info.an_info &
5212                         I40E_AQ_QUALIFIED_MODULE)))
5213                         netdev_err(vsi->netdev,
5214                                    "the driver failed to link because an unqualified module was detected.");
5215         }
5216
5217         /* replay FDIR SB filters */
5218         if (vsi->type == I40E_VSI_FDIR) {
5219                 /* reset fd counters */
5220                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5221                 if (pf->fd_tcp_rule > 0) {
5222                         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5223                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5224                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5225                         pf->fd_tcp_rule = 0;
5226                 }
5227                 i40e_fdir_filter_restore(vsi);
5228         }
5229
5230         /* On the next run of the service_task, notify any clients of the new
5231          * opened netdev
5232          */
5233         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5234         i40e_service_event_schedule(pf);
5235
5236         return 0;
5237 }
5238
5239 /**
5240  * i40e_vsi_reinit_locked - Reset the VSI
5241  * @vsi: the VSI being configured
5242  *
5243  * Rebuild the ring structs after some configuration
5244  * has changed, e.g. MTU size.
5245  **/
5246 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5247 {
5248         struct i40e_pf *pf = vsi->back;
5249
5250         WARN_ON(in_interrupt());
5251         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5252                 usleep_range(1000, 2000);
5253         i40e_down(vsi);
5254
5255         i40e_up(vsi);
5256         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5257 }
5258
5259 /**
5260  * i40e_up - Bring the connection back up after being down
5261  * @vsi: the VSI being configured
5262  **/
5263 int i40e_up(struct i40e_vsi *vsi)
5264 {
5265         int err;
5266
5267         err = i40e_vsi_configure(vsi);
5268         if (!err)
5269                 err = i40e_up_complete(vsi);
5270
5271         return err;
5272 }
5273
5274 /**
5275  * i40e_down - Shutdown the connection processing
5276  * @vsi: the VSI being stopped
5277  **/
5278 void i40e_down(struct i40e_vsi *vsi)
5279 {
5280         int i;
5281
5282         /* It is assumed that the caller of this function
5283          * sets the vsi->state __I40E_DOWN bit.
5284          */
5285         if (vsi->netdev) {
5286                 netif_carrier_off(vsi->netdev);
5287                 netif_tx_disable(vsi->netdev);
5288         }
5289         i40e_vsi_disable_irq(vsi);
5290         i40e_vsi_control_rings(vsi, false);
5291         i40e_napi_disable_all(vsi);
5292
5293         for (i = 0; i < vsi->num_queue_pairs; i++) {
5294                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5295                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5296         }
5297
5298         i40e_notify_client_of_netdev_close(vsi, false);
5299
5300 }
5301
5302 /**
5303  * i40e_setup_tc - configure multiple traffic classes
5304  * @netdev: net device to configure
5305  * @tc: number of traffic classes to enable
5306  **/
5307 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5308 {
5309         struct i40e_netdev_priv *np = netdev_priv(netdev);
5310         struct i40e_vsi *vsi = np->vsi;
5311         struct i40e_pf *pf = vsi->back;
5312         u8 enabled_tc = 0;
5313         int ret = -EINVAL;
5314         int i;
5315
5316         /* Check if DCB enabled to continue */
5317         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5318                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5319                 goto exit;
5320         }
5321
5322         /* Check if MFP enabled */
5323         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5324                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5325                 goto exit;
5326         }
5327
5328         /* Check whether tc count is within enabled limit */
5329         if (tc > i40e_pf_get_num_tc(pf)) {
5330                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5331                 goto exit;
5332         }
5333
5334         /* Generate TC map for number of tc requested */
5335         for (i = 0; i < tc; i++)
5336                 enabled_tc |= BIT(i);
5337
5338         /* Requesting same TC configuration as already enabled */
5339         if (enabled_tc == vsi->tc_config.enabled_tc)
5340                 return 0;
5341
5342         /* Quiesce VSI queues */
5343         i40e_quiesce_vsi(vsi);
5344
5345         /* Configure VSI for enabled TCs */
5346         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5347         if (ret) {
5348                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5349                             vsi->seid);
5350                 goto exit;
5351         }
5352
5353         /* Unquiesce VSI */
5354         i40e_unquiesce_vsi(vsi);
5355
5356 exit:
5357         return ret;
5358 }
5359
5360 #ifdef I40E_FCOE
5361 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5362                     struct tc_to_netdev *tc)
5363 #else
5364 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5365                            struct tc_to_netdev *tc)
5366 #endif
5367 {
5368         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5369                 return -EINVAL;
5370         return i40e_setup_tc(netdev, tc->tc);
5371 }
5372
5373 /**
5374  * i40e_open - Called when a network interface is made active
5375  * @netdev: network interface device structure
5376  *
5377  * The open entry point is called when a network interface is made
5378  * active by the system (IFF_UP).  At this point all resources needed
5379  * for transmit and receive operations are allocated, the interrupt
5380  * handler is registered with the OS, the netdev watchdog subtask is
5381  * enabled, and the stack is notified that the interface is ready.
5382  *
5383  * Returns 0 on success, negative value on failure
5384  **/
5385 int i40e_open(struct net_device *netdev)
5386 {
5387         struct i40e_netdev_priv *np = netdev_priv(netdev);
5388         struct i40e_vsi *vsi = np->vsi;
5389         struct i40e_pf *pf = vsi->back;
5390         int err;
5391
5392         /* disallow open during test or if eeprom is broken */
5393         if (test_bit(__I40E_TESTING, &pf->state) ||
5394             test_bit(__I40E_BAD_EEPROM, &pf->state))
5395                 return -EBUSY;
5396
5397         netif_carrier_off(netdev);
5398
5399         err = i40e_vsi_open(vsi);
5400         if (err)
5401                 return err;
5402
5403         /* configure global TSO hardware offload settings */
5404         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5405                                                        TCP_FLAG_FIN) >> 16);
5406         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5407                                                        TCP_FLAG_FIN |
5408                                                        TCP_FLAG_CWR) >> 16);
5409         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5410
5411         udp_tunnel_get_rx_info(netdev);
5412
5413         return 0;
5414 }
5415
5416 /**
5417  * i40e_vsi_open -
5418  * @vsi: the VSI to open
5419  *
5420  * Finish initialization of the VSI.
5421  *
5422  * Returns 0 on success, negative value on failure
5423  **/
5424 int i40e_vsi_open(struct i40e_vsi *vsi)
5425 {
5426         struct i40e_pf *pf = vsi->back;
5427         char int_name[I40E_INT_NAME_STR_LEN];
5428         int err;
5429
5430         /* allocate descriptors */
5431         err = i40e_vsi_setup_tx_resources(vsi);
5432         if (err)
5433                 goto err_setup_tx;
5434         err = i40e_vsi_setup_rx_resources(vsi);
5435         if (err)
5436                 goto err_setup_rx;
5437
5438         err = i40e_vsi_configure(vsi);
5439         if (err)
5440                 goto err_setup_rx;
5441
5442         if (vsi->netdev) {
5443                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5444                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5445                 err = i40e_vsi_request_irq(vsi, int_name);
5446                 if (err)
5447                         goto err_setup_rx;
5448
5449                 /* Notify the stack of the actual queue counts. */
5450                 err = netif_set_real_num_tx_queues(vsi->netdev,
5451                                                    vsi->num_queue_pairs);
5452                 if (err)
5453                         goto err_set_queues;
5454
5455                 err = netif_set_real_num_rx_queues(vsi->netdev,
5456                                                    vsi->num_queue_pairs);
5457                 if (err)
5458                         goto err_set_queues;
5459
5460         } else if (vsi->type == I40E_VSI_FDIR) {
5461                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5462                          dev_driver_string(&pf->pdev->dev),
5463                          dev_name(&pf->pdev->dev));
5464                 err = i40e_vsi_request_irq(vsi, int_name);
5465
5466         } else {
5467                 err = -EINVAL;
5468                 goto err_setup_rx;
5469         }
5470
5471         err = i40e_up_complete(vsi);
5472         if (err)
5473                 goto err_up_complete;
5474
5475         return 0;
5476
5477 err_up_complete:
5478         i40e_down(vsi);
5479 err_set_queues:
5480         i40e_vsi_free_irq(vsi);
5481 err_setup_rx:
5482         i40e_vsi_free_rx_resources(vsi);
5483 err_setup_tx:
5484         i40e_vsi_free_tx_resources(vsi);
5485         if (vsi == pf->vsi[pf->lan_vsi])
5486                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5487
5488         return err;
5489 }
5490
5491 /**
5492  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5493  * @pf: Pointer to PF
5494  *
5495  * This function destroys the hlist where all the Flow Director
5496  * filters were saved.
5497  **/
5498 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5499 {
5500         struct i40e_fdir_filter *filter;
5501         struct hlist_node *node2;
5502
5503         hlist_for_each_entry_safe(filter, node2,
5504                                   &pf->fdir_filter_list, fdir_node) {
5505                 hlist_del(&filter->fdir_node);
5506                 kfree(filter);
5507         }
5508         pf->fdir_pf_active_filters = 0;
5509 }
5510
5511 /**
5512  * i40e_close - Disables a network interface
5513  * @netdev: network interface device structure
5514  *
5515  * The close entry point is called when an interface is de-activated
5516  * by the OS.  The hardware is still under the driver's control, but
5517  * this netdev interface is disabled.
5518  *
5519  * Returns 0, this is not allowed to fail
5520  **/
5521 int i40e_close(struct net_device *netdev)
5522 {
5523         struct i40e_netdev_priv *np = netdev_priv(netdev);
5524         struct i40e_vsi *vsi = np->vsi;
5525
5526         i40e_vsi_close(vsi);
5527
5528         return 0;
5529 }
5530
5531 /**
5532  * i40e_do_reset - Start a PF or Core Reset sequence
5533  * @pf: board private structure
5534  * @reset_flags: which reset is requested
5535  *
5536  * The essential difference in resets is that the PF Reset
5537  * doesn't clear the packet buffers, doesn't reset the PE
5538  * firmware, and doesn't bother the other PFs on the chip.
5539  **/
5540 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5541 {
5542         u32 val;
5543
5544         WARN_ON(in_interrupt());
5545
5546
5547         /* do the biggest reset indicated */
5548         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5549
5550                 /* Request a Global Reset
5551                  *
5552                  * This will start the chip's countdown to the actual full
5553                  * chip reset event, and a warning interrupt to be sent
5554                  * to all PFs, including the requestor.  Our handler
5555                  * for the warning interrupt will deal with the shutdown
5556                  * and recovery of the switch setup.
5557                  */
5558                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5559                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5560                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5561                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5562
5563         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5564
5565                 /* Request a Core Reset
5566                  *
5567                  * Same as Global Reset, except does *not* include the MAC/PHY
5568                  */
5569                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5570                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5571                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5572                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5573                 i40e_flush(&pf->hw);
5574
5575         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5576
5577                 /* Request a PF Reset
5578                  *
5579                  * Resets only the PF-specific registers
5580                  *
5581                  * This goes directly to the tear-down and rebuild of
5582                  * the switch, since we need to do all the recovery as
5583                  * for the Core Reset.
5584                  */
5585                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5586                 i40e_handle_reset_warning(pf);
5587
5588         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5589                 int v;
5590
5591                 /* Find the VSI(s) that requested a re-init */
5592                 dev_info(&pf->pdev->dev,
5593                          "VSI reinit requested\n");
5594                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5595                         struct i40e_vsi *vsi = pf->vsi[v];
5596
5597                         if (vsi != NULL &&
5598                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5599                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5600                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5601                         }
5602                 }
5603         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5604                 int v;
5605
5606                 /* Find the VSI(s) that needs to be brought down */
5607                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5608                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5609                         struct i40e_vsi *vsi = pf->vsi[v];
5610
5611                         if (vsi != NULL &&
5612                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5613                                 set_bit(__I40E_DOWN, &vsi->state);
5614                                 i40e_down(vsi);
5615                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5616                         }
5617                 }
5618         } else {
5619                 dev_info(&pf->pdev->dev,
5620                          "bad reset request 0x%08x\n", reset_flags);
5621         }
5622 }
5623
5624 #ifdef CONFIG_I40E_DCB
5625 /**
5626  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5627  * @pf: board private structure
5628  * @old_cfg: current DCB config
5629  * @new_cfg: new DCB config
5630  **/
5631 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5632                             struct i40e_dcbx_config *old_cfg,
5633                             struct i40e_dcbx_config *new_cfg)
5634 {
5635         bool need_reconfig = false;
5636
5637         /* Check if ETS configuration has changed */
5638         if (memcmp(&new_cfg->etscfg,
5639                    &old_cfg->etscfg,
5640                    sizeof(new_cfg->etscfg))) {
5641                 /* If Priority Table has changed reconfig is needed */
5642                 if (memcmp(&new_cfg->etscfg.prioritytable,
5643                            &old_cfg->etscfg.prioritytable,
5644                            sizeof(new_cfg->etscfg.prioritytable))) {
5645                         need_reconfig = true;
5646                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5647                 }
5648
5649                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5650                            &old_cfg->etscfg.tcbwtable,
5651                            sizeof(new_cfg->etscfg.tcbwtable)))
5652                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5653
5654                 if (memcmp(&new_cfg->etscfg.tsatable,
5655                            &old_cfg->etscfg.tsatable,
5656                            sizeof(new_cfg->etscfg.tsatable)))
5657                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5658         }
5659
5660         /* Check if PFC configuration has changed */
5661         if (memcmp(&new_cfg->pfc,
5662                    &old_cfg->pfc,
5663                    sizeof(new_cfg->pfc))) {
5664                 need_reconfig = true;
5665                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5666         }
5667
5668         /* Check if APP Table has changed */
5669         if (memcmp(&new_cfg->app,
5670                    &old_cfg->app,
5671                    sizeof(new_cfg->app))) {
5672                 need_reconfig = true;
5673                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5674         }
5675
5676         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5677         return need_reconfig;
5678 }
5679
5680 /**
5681  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5682  * @pf: board private structure
5683  * @e: event info posted on ARQ
5684  **/
5685 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5686                                   struct i40e_arq_event_info *e)
5687 {
5688         struct i40e_aqc_lldp_get_mib *mib =
5689                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5690         struct i40e_hw *hw = &pf->hw;
5691         struct i40e_dcbx_config tmp_dcbx_cfg;
5692         bool need_reconfig = false;
5693         int ret = 0;
5694         u8 type;
5695
5696         /* Not DCB capable or capability disabled */
5697         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5698                 return ret;
5699
5700         /* Ignore if event is not for Nearest Bridge */
5701         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5702                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5703         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5704         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5705                 return ret;
5706
5707         /* Check MIB Type and return if event for Remote MIB update */
5708         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5709         dev_dbg(&pf->pdev->dev,
5710                 "LLDP event mib type %s\n", type ? "remote" : "local");
5711         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5712                 /* Update the remote cached instance and return */
5713                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5714                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5715                                 &hw->remote_dcbx_config);
5716                 goto exit;
5717         }
5718
5719         /* Store the old configuration */
5720         tmp_dcbx_cfg = hw->local_dcbx_config;
5721
5722         /* Reset the old DCBx configuration data */
5723         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5724         /* Get updated DCBX data from firmware */
5725         ret = i40e_get_dcb_config(&pf->hw);
5726         if (ret) {
5727                 dev_info(&pf->pdev->dev,
5728                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5729                          i40e_stat_str(&pf->hw, ret),
5730                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5731                 goto exit;
5732         }
5733
5734         /* No change detected in DCBX configs */
5735         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5736                     sizeof(tmp_dcbx_cfg))) {
5737                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5738                 goto exit;
5739         }
5740
5741         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5742                                                &hw->local_dcbx_config);
5743
5744         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5745
5746         if (!need_reconfig)
5747                 goto exit;
5748
5749         /* Enable DCB tagging only when more than one TC */
5750         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5751                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5752         else
5753                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5754
5755         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5756         /* Reconfiguration needed quiesce all VSIs */
5757         i40e_pf_quiesce_all_vsi(pf);
5758
5759         /* Changes in configuration update VEB/VSI */
5760         i40e_dcb_reconfigure(pf);
5761
5762         ret = i40e_resume_port_tx(pf);
5763
5764         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5765         /* In case of error no point in resuming VSIs */
5766         if (ret)
5767                 goto exit;
5768
5769         /* Wait for the PF's queues to be disabled */
5770         ret = i40e_pf_wait_queues_disabled(pf);
5771         if (ret) {
5772                 /* Schedule PF reset to recover */
5773                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5774                 i40e_service_event_schedule(pf);
5775         } else {
5776                 i40e_pf_unquiesce_all_vsi(pf);
5777                 /* Notify the client for the DCB changes */
5778                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5779         }
5780
5781 exit:
5782         return ret;
5783 }
5784 #endif /* CONFIG_I40E_DCB */
5785
5786 /**
5787  * i40e_do_reset_safe - Protected reset path for userland calls.
5788  * @pf: board private structure
5789  * @reset_flags: which reset is requested
5790  *
5791  **/
5792 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5793 {
5794         rtnl_lock();
5795         i40e_do_reset(pf, reset_flags);
5796         rtnl_unlock();
5797 }
5798
5799 /**
5800  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5801  * @pf: board private structure
5802  * @e: event info posted on ARQ
5803  *
5804  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5805  * and VF queues
5806  **/
5807 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5808                                            struct i40e_arq_event_info *e)
5809 {
5810         struct i40e_aqc_lan_overflow *data =
5811                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5812         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5813         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5814         struct i40e_hw *hw = &pf->hw;
5815         struct i40e_vf *vf;
5816         u16 vf_id;
5817
5818         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5819                 queue, qtx_ctl);
5820
5821         /* Queue belongs to VF, find the VF and issue VF reset */
5822         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5823             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5824                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5825                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5826                 vf_id -= hw->func_caps.vf_base_id;
5827                 vf = &pf->vf[vf_id];
5828                 i40e_vc_notify_vf_reset(vf);
5829                 /* Allow VF to process pending reset notification */
5830                 msleep(20);
5831                 i40e_reset_vf(vf, false);
5832         }
5833 }
5834
5835 /**
5836  * i40e_service_event_complete - Finish up the service event
5837  * @pf: board private structure
5838  **/
5839 static void i40e_service_event_complete(struct i40e_pf *pf)
5840 {
5841         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5842
5843         /* flush memory to make sure state is correct before next watchog */
5844         smp_mb__before_atomic();
5845         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5846 }
5847
5848 /**
5849  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5850  * @pf: board private structure
5851  **/
5852 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5853 {
5854         u32 val, fcnt_prog;
5855
5856         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5857         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5858         return fcnt_prog;
5859 }
5860
5861 /**
5862  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5863  * @pf: board private structure
5864  **/
5865 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5866 {
5867         u32 val, fcnt_prog;
5868
5869         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5870         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5871                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5872                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5873         return fcnt_prog;
5874 }
5875
5876 /**
5877  * i40e_get_global_fd_count - Get total FD filters programmed on device
5878  * @pf: board private structure
5879  **/
5880 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5881 {
5882         u32 val, fcnt_prog;
5883
5884         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5885         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5886                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5887                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5888         return fcnt_prog;
5889 }
5890
5891 /**
5892  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5893  * @pf: board private structure
5894  **/
5895 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5896 {
5897         struct i40e_fdir_filter *filter;
5898         u32 fcnt_prog, fcnt_avail;
5899         struct hlist_node *node;
5900
5901         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5902                 return;
5903
5904         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5905          * to re-enable
5906          */
5907         fcnt_prog = i40e_get_global_fd_count(pf);
5908         fcnt_avail = pf->fdir_pf_filter_count;
5909         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5910             (pf->fd_add_err == 0) ||
5911             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5912                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5913                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5914                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5915                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5916                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5917                 }
5918         }
5919
5920         /* Wait for some more space to be available to turn on ATR. We also
5921          * must check that no existing ntuple rules for TCP are in effect
5922          */
5923         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5924                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5925                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5926                     (pf->fd_tcp_rule == 0)) {
5927                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5928                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5929                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
5930                 }
5931         }
5932
5933         /* if hw had a problem adding a filter, delete it */
5934         if (pf->fd_inv > 0) {
5935                 hlist_for_each_entry_safe(filter, node,
5936                                           &pf->fdir_filter_list, fdir_node) {
5937                         if (filter->fd_id == pf->fd_inv) {
5938                                 hlist_del(&filter->fdir_node);
5939                                 kfree(filter);
5940                                 pf->fdir_pf_active_filters--;
5941                         }
5942                 }
5943         }
5944 }
5945
5946 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5947 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5948 /**
5949  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5950  * @pf: board private structure
5951  **/
5952 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5953 {
5954         unsigned long min_flush_time;
5955         int flush_wait_retry = 50;
5956         bool disable_atr = false;
5957         int fd_room;
5958         int reg;
5959
5960         if (!time_after(jiffies, pf->fd_flush_timestamp +
5961                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5962                 return;
5963
5964         /* If the flush is happening too quick and we have mostly SB rules we
5965          * should not re-enable ATR for some time.
5966          */
5967         min_flush_time = pf->fd_flush_timestamp +
5968                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5969         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5970
5971         if (!(time_after(jiffies, min_flush_time)) &&
5972             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5973                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5974                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5975                 disable_atr = true;
5976         }
5977
5978         pf->fd_flush_timestamp = jiffies;
5979         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5980         /* flush all filters */
5981         wr32(&pf->hw, I40E_PFQF_CTL_1,
5982              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5983         i40e_flush(&pf->hw);
5984         pf->fd_flush_cnt++;
5985         pf->fd_add_err = 0;
5986         do {
5987                 /* Check FD flush status every 5-6msec */
5988                 usleep_range(5000, 6000);
5989                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5990                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5991                         break;
5992         } while (flush_wait_retry--);
5993         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5994                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5995         } else {
5996                 /* replay sideband filters */
5997                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5998                 if (!disable_atr)
5999                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6000                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6001                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6002                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6003         }
6004 }
6005
6006 /**
6007  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6008  * @pf: board private structure
6009  **/
6010 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6011 {
6012         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6013 }
6014
6015 /* We can see up to 256 filter programming desc in transit if the filters are
6016  * being applied really fast; before we see the first
6017  * filter miss error on Rx queue 0. Accumulating enough error messages before
6018  * reacting will make sure we don't cause flush too often.
6019  */
6020 #define I40E_MAX_FD_PROGRAM_ERROR 256
6021
6022 /**
6023  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6024  * @pf: board private structure
6025  **/
6026 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6027 {
6028
6029         /* if interface is down do nothing */
6030         if (test_bit(__I40E_DOWN, &pf->state))
6031                 return;
6032
6033         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6034                 i40e_fdir_flush_and_replay(pf);
6035
6036         i40e_fdir_check_and_reenable(pf);
6037
6038 }
6039
6040 /**
6041  * i40e_vsi_link_event - notify VSI of a link event
6042  * @vsi: vsi to be notified
6043  * @link_up: link up or down
6044  **/
6045 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6046 {
6047         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6048                 return;
6049
6050         switch (vsi->type) {
6051         case I40E_VSI_MAIN:
6052 #ifdef I40E_FCOE
6053         case I40E_VSI_FCOE:
6054 #endif
6055                 if (!vsi->netdev || !vsi->netdev_registered)
6056                         break;
6057
6058                 if (link_up) {
6059                         netif_carrier_on(vsi->netdev);
6060                         netif_tx_wake_all_queues(vsi->netdev);
6061                 } else {
6062                         netif_carrier_off(vsi->netdev);
6063                         netif_tx_stop_all_queues(vsi->netdev);
6064                 }
6065                 break;
6066
6067         case I40E_VSI_SRIOV:
6068         case I40E_VSI_VMDQ2:
6069         case I40E_VSI_CTRL:
6070         case I40E_VSI_IWARP:
6071         case I40E_VSI_MIRROR:
6072         default:
6073                 /* there is no notification for other VSIs */
6074                 break;
6075         }
6076 }
6077
6078 /**
6079  * i40e_veb_link_event - notify elements on the veb of a link event
6080  * @veb: veb to be notified
6081  * @link_up: link up or down
6082  **/
6083 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6084 {
6085         struct i40e_pf *pf;
6086         int i;
6087
6088         if (!veb || !veb->pf)
6089                 return;
6090         pf = veb->pf;
6091
6092         /* depth first... */
6093         for (i = 0; i < I40E_MAX_VEB; i++)
6094                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6095                         i40e_veb_link_event(pf->veb[i], link_up);
6096
6097         /* ... now the local VSIs */
6098         for (i = 0; i < pf->num_alloc_vsi; i++)
6099                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6100                         i40e_vsi_link_event(pf->vsi[i], link_up);
6101 }
6102
6103 /**
6104  * i40e_link_event - Update netif_carrier status
6105  * @pf: board private structure
6106  **/
6107 static void i40e_link_event(struct i40e_pf *pf)
6108 {
6109         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6110         u8 new_link_speed, old_link_speed;
6111         i40e_status status;
6112         bool new_link, old_link;
6113
6114         /* save off old link status information */
6115         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6116
6117         /* set this to force the get_link_status call to refresh state */
6118         pf->hw.phy.get_link_info = true;
6119
6120         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6121
6122         status = i40e_get_link_status(&pf->hw, &new_link);
6123         if (status) {
6124                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6125                         status);
6126                 return;
6127         }
6128
6129         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6130         new_link_speed = pf->hw.phy.link_info.link_speed;
6131
6132         if (new_link == old_link &&
6133             new_link_speed == old_link_speed &&
6134             (test_bit(__I40E_DOWN, &vsi->state) ||
6135              new_link == netif_carrier_ok(vsi->netdev)))
6136                 return;
6137
6138         if (!test_bit(__I40E_DOWN, &vsi->state))
6139                 i40e_print_link_message(vsi, new_link);
6140
6141         /* Notify the base of the switch tree connected to
6142          * the link.  Floating VEBs are not notified.
6143          */
6144         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6145                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6146         else
6147                 i40e_vsi_link_event(vsi, new_link);
6148
6149         if (pf->vf)
6150                 i40e_vc_notify_link_state(pf);
6151
6152         if (pf->flags & I40E_FLAG_PTP)
6153                 i40e_ptp_set_increment(pf);
6154 }
6155
6156 /**
6157  * i40e_watchdog_subtask - periodic checks not using event driven response
6158  * @pf: board private structure
6159  **/
6160 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6161 {
6162         int i;
6163
6164         /* if interface is down do nothing */
6165         if (test_bit(__I40E_DOWN, &pf->state) ||
6166             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6167                 return;
6168
6169         /* make sure we don't do these things too often */
6170         if (time_before(jiffies, (pf->service_timer_previous +
6171                                   pf->service_timer_period)))
6172                 return;
6173         pf->service_timer_previous = jiffies;
6174
6175         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6176                 i40e_link_event(pf);
6177
6178         /* Update the stats for active netdevs so the network stack
6179          * can look at updated numbers whenever it cares to
6180          */
6181         for (i = 0; i < pf->num_alloc_vsi; i++)
6182                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6183                         i40e_update_stats(pf->vsi[i]);
6184
6185         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6186                 /* Update the stats for the active switching components */
6187                 for (i = 0; i < I40E_MAX_VEB; i++)
6188                         if (pf->veb[i])
6189                                 i40e_update_veb_stats(pf->veb[i]);
6190         }
6191
6192         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6193 }
6194
6195 /**
6196  * i40e_reset_subtask - Set up for resetting the device and driver
6197  * @pf: board private structure
6198  **/
6199 static void i40e_reset_subtask(struct i40e_pf *pf)
6200 {
6201         u32 reset_flags = 0;
6202
6203         rtnl_lock();
6204         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6205                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6206                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6207         }
6208         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6209                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6210                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6211         }
6212         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6213                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6214                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6215         }
6216         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6217                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6218                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6219         }
6220         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6221                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6222                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6223         }
6224
6225         /* If there's a recovery already waiting, it takes
6226          * precedence before starting a new reset sequence.
6227          */
6228         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6229                 i40e_handle_reset_warning(pf);
6230                 goto unlock;
6231         }
6232
6233         /* If we're already down or resetting, just bail */
6234         if (reset_flags &&
6235             !test_bit(__I40E_DOWN, &pf->state) &&
6236             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6237                 i40e_do_reset(pf, reset_flags);
6238
6239 unlock:
6240         rtnl_unlock();
6241 }
6242
6243 /**
6244  * i40e_handle_link_event - Handle link event
6245  * @pf: board private structure
6246  * @e: event info posted on ARQ
6247  **/
6248 static void i40e_handle_link_event(struct i40e_pf *pf,
6249                                    struct i40e_arq_event_info *e)
6250 {
6251         struct i40e_aqc_get_link_status *status =
6252                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6253
6254         /* Do a new status request to re-enable LSE reporting
6255          * and load new status information into the hw struct
6256          * This completely ignores any state information
6257          * in the ARQ event info, instead choosing to always
6258          * issue the AQ update link status command.
6259          */
6260         i40e_link_event(pf);
6261
6262         /* check for unqualified module, if link is down */
6263         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6264             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6265             (!(status->link_info & I40E_AQ_LINK_UP)))
6266                 dev_err(&pf->pdev->dev,
6267                         "The driver failed to link because an unqualified module was detected.\n");
6268 }
6269
6270 /**
6271  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6272  * @pf: board private structure
6273  **/
6274 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6275 {
6276         struct i40e_arq_event_info event;
6277         struct i40e_hw *hw = &pf->hw;
6278         u16 pending, i = 0;
6279         i40e_status ret;
6280         u16 opcode;
6281         u32 oldval;
6282         u32 val;
6283
6284         /* Do not run clean AQ when PF reset fails */
6285         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6286                 return;
6287
6288         /* check for error indications */
6289         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6290         oldval = val;
6291         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6292                 if (hw->debug_mask & I40E_DEBUG_AQ)
6293                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6294                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6295         }
6296         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6297                 if (hw->debug_mask & I40E_DEBUG_AQ)
6298                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6299                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6300                 pf->arq_overflows++;
6301         }
6302         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6303                 if (hw->debug_mask & I40E_DEBUG_AQ)
6304                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6305                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6306         }
6307         if (oldval != val)
6308                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6309
6310         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6311         oldval = val;
6312         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6313                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6314                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6315                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6316         }
6317         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6318                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6319                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6320                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6321         }
6322         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6323                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6324                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6325                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6326         }
6327         if (oldval != val)
6328                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6329
6330         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6331         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6332         if (!event.msg_buf)
6333                 return;
6334
6335         do {
6336                 ret = i40e_clean_arq_element(hw, &event, &pending);
6337                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6338                         break;
6339                 else if (ret) {
6340                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6341                         break;
6342                 }
6343
6344                 opcode = le16_to_cpu(event.desc.opcode);
6345                 switch (opcode) {
6346
6347                 case i40e_aqc_opc_get_link_status:
6348                         i40e_handle_link_event(pf, &event);
6349                         break;
6350                 case i40e_aqc_opc_send_msg_to_pf:
6351                         ret = i40e_vc_process_vf_msg(pf,
6352                                         le16_to_cpu(event.desc.retval),
6353                                         le32_to_cpu(event.desc.cookie_high),
6354                                         le32_to_cpu(event.desc.cookie_low),
6355                                         event.msg_buf,
6356                                         event.msg_len);
6357                         break;
6358                 case i40e_aqc_opc_lldp_update_mib:
6359                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6360 #ifdef CONFIG_I40E_DCB
6361                         rtnl_lock();
6362                         ret = i40e_handle_lldp_event(pf, &event);
6363                         rtnl_unlock();
6364 #endif /* CONFIG_I40E_DCB */
6365                         break;
6366                 case i40e_aqc_opc_event_lan_overflow:
6367                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6368                         i40e_handle_lan_overflow_event(pf, &event);
6369                         break;
6370                 case i40e_aqc_opc_send_msg_to_peer:
6371                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6372                         break;
6373                 case i40e_aqc_opc_nvm_erase:
6374                 case i40e_aqc_opc_nvm_update:
6375                 case i40e_aqc_opc_oem_post_update:
6376                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6377                                    "ARQ NVM operation 0x%04x completed\n",
6378                                    opcode);
6379                         break;
6380                 default:
6381                         dev_info(&pf->pdev->dev,
6382                                  "ARQ: Unknown event 0x%04x ignored\n",
6383                                  opcode);
6384                         break;
6385                 }
6386         } while (pending && (i++ < pf->adminq_work_limit));
6387
6388         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6389         /* re-enable Admin queue interrupt cause */
6390         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6391         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6392         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6393         i40e_flush(hw);
6394
6395         kfree(event.msg_buf);
6396 }
6397
6398 /**
6399  * i40e_verify_eeprom - make sure eeprom is good to use
6400  * @pf: board private structure
6401  **/
6402 static void i40e_verify_eeprom(struct i40e_pf *pf)
6403 {
6404         int err;
6405
6406         err = i40e_diag_eeprom_test(&pf->hw);
6407         if (err) {
6408                 /* retry in case of garbage read */
6409                 err = i40e_diag_eeprom_test(&pf->hw);
6410                 if (err) {
6411                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6412                                  err);
6413                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6414                 }
6415         }
6416
6417         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6418                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6419                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6420         }
6421 }
6422
6423 /**
6424  * i40e_enable_pf_switch_lb
6425  * @pf: pointer to the PF structure
6426  *
6427  * enable switch loop back or die - no point in a return value
6428  **/
6429 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6430 {
6431         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6432         struct i40e_vsi_context ctxt;
6433         int ret;
6434
6435         ctxt.seid = pf->main_vsi_seid;
6436         ctxt.pf_num = pf->hw.pf_id;
6437         ctxt.vf_num = 0;
6438         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6439         if (ret) {
6440                 dev_info(&pf->pdev->dev,
6441                          "couldn't get PF vsi config, 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                 return;
6445         }
6446         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6447         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6448         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6449
6450         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6451         if (ret) {
6452                 dev_info(&pf->pdev->dev,
6453                          "update vsi switch failed, err %s aq_err %s\n",
6454                          i40e_stat_str(&pf->hw, ret),
6455                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6456         }
6457 }
6458
6459 /**
6460  * i40e_disable_pf_switch_lb
6461  * @pf: pointer to the PF structure
6462  *
6463  * disable switch loop back or die - no point in a return value
6464  **/
6465 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6466 {
6467         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6468         struct i40e_vsi_context ctxt;
6469         int ret;
6470
6471         ctxt.seid = pf->main_vsi_seid;
6472         ctxt.pf_num = pf->hw.pf_id;
6473         ctxt.vf_num = 0;
6474         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6475         if (ret) {
6476                 dev_info(&pf->pdev->dev,
6477                          "couldn't get PF vsi config, err %s aq_err %s\n",
6478                          i40e_stat_str(&pf->hw, ret),
6479                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6480                 return;
6481         }
6482         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6483         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6484         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6485
6486         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6487         if (ret) {
6488                 dev_info(&pf->pdev->dev,
6489                          "update vsi switch failed, err %s aq_err %s\n",
6490                          i40e_stat_str(&pf->hw, ret),
6491                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6492         }
6493 }
6494
6495 /**
6496  * i40e_config_bridge_mode - Configure the HW bridge mode
6497  * @veb: pointer to the bridge instance
6498  *
6499  * Configure the loop back mode for the LAN VSI that is downlink to the
6500  * specified HW bridge instance. It is expected this function is called
6501  * when a new HW bridge is instantiated.
6502  **/
6503 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6504 {
6505         struct i40e_pf *pf = veb->pf;
6506
6507         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6508                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6509                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6510         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6511                 i40e_disable_pf_switch_lb(pf);
6512         else
6513                 i40e_enable_pf_switch_lb(pf);
6514 }
6515
6516 /**
6517  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6518  * @veb: pointer to the VEB instance
6519  *
6520  * This is a recursive function that first builds the attached VSIs then
6521  * recurses in to build the next layer of VEB.  We track the connections
6522  * through our own index numbers because the seid's from the HW could
6523  * change across the reset.
6524  **/
6525 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6526 {
6527         struct i40e_vsi *ctl_vsi = NULL;
6528         struct i40e_pf *pf = veb->pf;
6529         int v, veb_idx;
6530         int ret;
6531
6532         /* build VSI that owns this VEB, temporarily attached to base VEB */
6533         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6534                 if (pf->vsi[v] &&
6535                     pf->vsi[v]->veb_idx == veb->idx &&
6536                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6537                         ctl_vsi = pf->vsi[v];
6538                         break;
6539                 }
6540         }
6541         if (!ctl_vsi) {
6542                 dev_info(&pf->pdev->dev,
6543                          "missing owner VSI for veb_idx %d\n", veb->idx);
6544                 ret = -ENOENT;
6545                 goto end_reconstitute;
6546         }
6547         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6548                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6549         ret = i40e_add_vsi(ctl_vsi);
6550         if (ret) {
6551                 dev_info(&pf->pdev->dev,
6552                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6553                          veb->idx, ret);
6554                 goto end_reconstitute;
6555         }
6556         i40e_vsi_reset_stats(ctl_vsi);
6557
6558         /* create the VEB in the switch and move the VSI onto the VEB */
6559         ret = i40e_add_veb(veb, ctl_vsi);
6560         if (ret)
6561                 goto end_reconstitute;
6562
6563         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6564                 veb->bridge_mode = BRIDGE_MODE_VEB;
6565         else
6566                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6567         i40e_config_bridge_mode(veb);
6568
6569         /* create the remaining VSIs attached to this VEB */
6570         for (v = 0; v < pf->num_alloc_vsi; v++) {
6571                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6572                         continue;
6573
6574                 if (pf->vsi[v]->veb_idx == veb->idx) {
6575                         struct i40e_vsi *vsi = pf->vsi[v];
6576
6577                         vsi->uplink_seid = veb->seid;
6578                         ret = i40e_add_vsi(vsi);
6579                         if (ret) {
6580                                 dev_info(&pf->pdev->dev,
6581                                          "rebuild of vsi_idx %d failed: %d\n",
6582                                          v, ret);
6583                                 goto end_reconstitute;
6584                         }
6585                         i40e_vsi_reset_stats(vsi);
6586                 }
6587         }
6588
6589         /* create any VEBs attached to this VEB - RECURSION */
6590         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6591                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6592                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6593                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6594                         if (ret)
6595                                 break;
6596                 }
6597         }
6598
6599 end_reconstitute:
6600         return ret;
6601 }
6602
6603 /**
6604  * i40e_get_capabilities - get info about the HW
6605  * @pf: the PF struct
6606  **/
6607 static int i40e_get_capabilities(struct i40e_pf *pf)
6608 {
6609         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6610         u16 data_size;
6611         int buf_len;
6612         int err;
6613
6614         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6615         do {
6616                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6617                 if (!cap_buf)
6618                         return -ENOMEM;
6619
6620                 /* this loads the data into the hw struct for us */
6621                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6622                                             &data_size,
6623                                             i40e_aqc_opc_list_func_capabilities,
6624                                             NULL);
6625                 /* data loaded, buffer no longer needed */
6626                 kfree(cap_buf);
6627
6628                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6629                         /* retry with a larger buffer */
6630                         buf_len = data_size;
6631                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6632                         dev_info(&pf->pdev->dev,
6633                                  "capability discovery failed, err %s aq_err %s\n",
6634                                  i40e_stat_str(&pf->hw, err),
6635                                  i40e_aq_str(&pf->hw,
6636                                              pf->hw.aq.asq_last_status));
6637                         return -ENODEV;
6638                 }
6639         } while (err);
6640
6641         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6642                 dev_info(&pf->pdev->dev,
6643                          "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",
6644                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6645                          pf->hw.func_caps.num_msix_vectors,
6646                          pf->hw.func_caps.num_msix_vectors_vf,
6647                          pf->hw.func_caps.fd_filters_guaranteed,
6648                          pf->hw.func_caps.fd_filters_best_effort,
6649                          pf->hw.func_caps.num_tx_qp,
6650                          pf->hw.func_caps.num_vsis);
6651
6652 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6653                        + pf->hw.func_caps.num_vfs)
6654         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6655                 dev_info(&pf->pdev->dev,
6656                          "got num_vsis %d, setting num_vsis to %d\n",
6657                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6658                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6659         }
6660
6661         return 0;
6662 }
6663
6664 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6665
6666 /**
6667  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6668  * @pf: board private structure
6669  **/
6670 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6671 {
6672         struct i40e_vsi *vsi;
6673         int i;
6674
6675         /* quick workaround for an NVM issue that leaves a critical register
6676          * uninitialized
6677          */
6678         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6679                 static const u32 hkey[] = {
6680                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6681                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6682                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6683                         0x95b3a76d};
6684
6685                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6686                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6687         }
6688
6689         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6690                 return;
6691
6692         /* find existing VSI and see if it needs configuring */
6693         vsi = NULL;
6694         for (i = 0; i < pf->num_alloc_vsi; i++) {
6695                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6696                         vsi = pf->vsi[i];
6697                         break;
6698                 }
6699         }
6700
6701         /* create a new VSI if none exists */
6702         if (!vsi) {
6703                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6704                                      pf->vsi[pf->lan_vsi]->seid, 0);
6705                 if (!vsi) {
6706                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6707                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6708                         return;
6709                 }
6710         }
6711
6712         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6713 }
6714
6715 /**
6716  * i40e_fdir_teardown - release the Flow Director resources
6717  * @pf: board private structure
6718  **/
6719 static void i40e_fdir_teardown(struct i40e_pf *pf)
6720 {
6721         int i;
6722
6723         i40e_fdir_filter_exit(pf);
6724         for (i = 0; i < pf->num_alloc_vsi; i++) {
6725                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6726                         i40e_vsi_release(pf->vsi[i]);
6727                         break;
6728                 }
6729         }
6730 }
6731
6732 /**
6733  * i40e_prep_for_reset - prep for the core to reset
6734  * @pf: board private structure
6735  *
6736  * Close up the VFs and other things in prep for PF Reset.
6737   **/
6738 static void i40e_prep_for_reset(struct i40e_pf *pf)
6739 {
6740         struct i40e_hw *hw = &pf->hw;
6741         i40e_status ret = 0;
6742         u32 v;
6743
6744         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6745         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6746                 return;
6747         if (i40e_check_asq_alive(&pf->hw))
6748                 i40e_vc_notify_reset(pf);
6749
6750         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6751
6752         /* quiesce the VSIs and their queues that are not already DOWN */
6753         i40e_pf_quiesce_all_vsi(pf);
6754
6755         for (v = 0; v < pf->num_alloc_vsi; v++) {
6756                 if (pf->vsi[v])
6757                         pf->vsi[v]->seid = 0;
6758         }
6759
6760         i40e_shutdown_adminq(&pf->hw);
6761
6762         /* call shutdown HMC */
6763         if (hw->hmc.hmc_obj) {
6764                 ret = i40e_shutdown_lan_hmc(hw);
6765                 if (ret)
6766                         dev_warn(&pf->pdev->dev,
6767                                  "shutdown_lan_hmc failed: %d\n", ret);
6768         }
6769 }
6770
6771 /**
6772  * i40e_send_version - update firmware with driver version
6773  * @pf: PF struct
6774  */
6775 static void i40e_send_version(struct i40e_pf *pf)
6776 {
6777         struct i40e_driver_version dv;
6778
6779         dv.major_version = DRV_VERSION_MAJOR;
6780         dv.minor_version = DRV_VERSION_MINOR;
6781         dv.build_version = DRV_VERSION_BUILD;
6782         dv.subbuild_version = 0;
6783         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6784         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6785 }
6786
6787 /**
6788  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6789  * @pf: board private structure
6790  * @reinit: if the Main VSI needs to re-initialized.
6791  **/
6792 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6793 {
6794         struct i40e_hw *hw = &pf->hw;
6795         u8 set_fc_aq_fail = 0;
6796         i40e_status ret;
6797         u32 val;
6798         u32 v;
6799
6800         /* Now we wait for GRST to settle out.
6801          * We don't have to delete the VEBs or VSIs from the hw switch
6802          * because the reset will make them disappear.
6803          */
6804         ret = i40e_pf_reset(hw);
6805         if (ret) {
6806                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6807                 set_bit(__I40E_RESET_FAILED, &pf->state);
6808                 goto clear_recovery;
6809         }
6810         pf->pfr_count++;
6811
6812         if (test_bit(__I40E_DOWN, &pf->state))
6813                 goto clear_recovery;
6814         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6815
6816         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6817         ret = i40e_init_adminq(&pf->hw);
6818         if (ret) {
6819                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6820                          i40e_stat_str(&pf->hw, ret),
6821                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6822                 goto clear_recovery;
6823         }
6824
6825         /* re-verify the eeprom if we just had an EMP reset */
6826         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6827                 i40e_verify_eeprom(pf);
6828
6829         i40e_clear_pxe_mode(hw);
6830         ret = i40e_get_capabilities(pf);
6831         if (ret)
6832                 goto end_core_reset;
6833
6834         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6835                                 hw->func_caps.num_rx_qp,
6836                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6837         if (ret) {
6838                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6839                 goto end_core_reset;
6840         }
6841         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6842         if (ret) {
6843                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6844                 goto end_core_reset;
6845         }
6846
6847 #ifdef CONFIG_I40E_DCB
6848         ret = i40e_init_pf_dcb(pf);
6849         if (ret) {
6850                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6851                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6852                 /* Continue without DCB enabled */
6853         }
6854 #endif /* CONFIG_I40E_DCB */
6855 #ifdef I40E_FCOE
6856         i40e_init_pf_fcoe(pf);
6857
6858 #endif
6859         /* do basic switch setup */
6860         ret = i40e_setup_pf_switch(pf, reinit);
6861         if (ret)
6862                 goto end_core_reset;
6863
6864         /* The driver only wants link up/down and module qualification
6865          * reports from firmware.  Note the negative logic.
6866          */
6867         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6868                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6869                                          I40E_AQ_EVENT_MEDIA_NA |
6870                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6871         if (ret)
6872                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6873                          i40e_stat_str(&pf->hw, ret),
6874                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6875
6876         /* make sure our flow control settings are restored */
6877         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6878         if (ret)
6879                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6880                         i40e_stat_str(&pf->hw, ret),
6881                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6882
6883         /* Rebuild the VSIs and VEBs that existed before reset.
6884          * They are still in our local switch element arrays, so only
6885          * need to rebuild the switch model in the HW.
6886          *
6887          * If there were VEBs but the reconstitution failed, we'll try
6888          * try to recover minimal use by getting the basic PF VSI working.
6889          */
6890         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6891                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6892                 /* find the one VEB connected to the MAC, and find orphans */
6893                 for (v = 0; v < I40E_MAX_VEB; v++) {
6894                         if (!pf->veb[v])
6895                                 continue;
6896
6897                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6898                             pf->veb[v]->uplink_seid == 0) {
6899                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6900
6901                                 if (!ret)
6902                                         continue;
6903
6904                                 /* If Main VEB failed, we're in deep doodoo,
6905                                  * so give up rebuilding the switch and set up
6906                                  * for minimal rebuild of PF VSI.
6907                                  * If orphan failed, we'll report the error
6908                                  * but try to keep going.
6909                                  */
6910                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6911                                         dev_info(&pf->pdev->dev,
6912                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6913                                                  ret);
6914                                         pf->vsi[pf->lan_vsi]->uplink_seid
6915                                                                 = pf->mac_seid;
6916                                         break;
6917                                 } else if (pf->veb[v]->uplink_seid == 0) {
6918                                         dev_info(&pf->pdev->dev,
6919                                                  "rebuild of orphan VEB failed: %d\n",
6920                                                  ret);
6921                                 }
6922                         }
6923                 }
6924         }
6925
6926         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6927                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6928                 /* no VEB, so rebuild only the Main VSI */
6929                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6930                 if (ret) {
6931                         dev_info(&pf->pdev->dev,
6932                                  "rebuild of Main VSI failed: %d\n", ret);
6933                         goto end_core_reset;
6934                 }
6935         }
6936
6937         /* Reconfigure hardware for allowing smaller MSS in the case
6938          * of TSO, so that we avoid the MDD being fired and causing
6939          * a reset in the case of small MSS+TSO.
6940          */
6941 #define I40E_REG_MSS          0x000E64DC
6942 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6943 #define I40E_64BYTE_MSS       0x400000
6944         val = rd32(hw, I40E_REG_MSS);
6945         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6946                 val &= ~I40E_REG_MSS_MIN_MASK;
6947                 val |= I40E_64BYTE_MSS;
6948                 wr32(hw, I40E_REG_MSS, val);
6949         }
6950
6951         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6952                 msleep(75);
6953                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6954                 if (ret)
6955                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6956                                  i40e_stat_str(&pf->hw, ret),
6957                                  i40e_aq_str(&pf->hw,
6958                                              pf->hw.aq.asq_last_status));
6959         }
6960         /* reinit the misc interrupt */
6961         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6962                 ret = i40e_setup_misc_vector(pf);
6963
6964         /* Add a filter to drop all Flow control frames from any VSI from being
6965          * transmitted. By doing so we stop a malicious VF from sending out
6966          * PAUSE or PFC frames and potentially controlling traffic for other
6967          * PF/VF VSIs.
6968          * The FW can still send Flow control frames if enabled.
6969          */
6970         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6971                                                        pf->main_vsi_seid);
6972
6973         /* restart the VSIs that were rebuilt and running before the reset */
6974         i40e_pf_unquiesce_all_vsi(pf);
6975
6976         if (pf->num_alloc_vfs) {
6977                 for (v = 0; v < pf->num_alloc_vfs; v++)
6978                         i40e_reset_vf(&pf->vf[v], true);
6979         }
6980
6981         /* tell the firmware that we're starting */
6982         i40e_send_version(pf);
6983
6984 end_core_reset:
6985         clear_bit(__I40E_RESET_FAILED, &pf->state);
6986 clear_recovery:
6987         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6988 }
6989
6990 /**
6991  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6992  * @pf: board private structure
6993  *
6994  * Close up the VFs and other things in prep for a Core Reset,
6995  * then get ready to rebuild the world.
6996  **/
6997 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6998 {
6999         i40e_prep_for_reset(pf);
7000         i40e_reset_and_rebuild(pf, false);
7001 }
7002
7003 /**
7004  * i40e_handle_mdd_event
7005  * @pf: pointer to the PF structure
7006  *
7007  * Called from the MDD irq handler to identify possibly malicious vfs
7008  **/
7009 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7010 {
7011         struct i40e_hw *hw = &pf->hw;
7012         bool mdd_detected = false;
7013         bool pf_mdd_detected = false;
7014         struct i40e_vf *vf;
7015         u32 reg;
7016         int i;
7017
7018         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7019                 return;
7020
7021         /* find what triggered the MDD event */
7022         reg = rd32(hw, I40E_GL_MDET_TX);
7023         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7024                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7025                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7026                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7027                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7028                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7029                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7030                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7031                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7032                                 pf->hw.func_caps.base_queue;
7033                 if (netif_msg_tx_err(pf))
7034                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7035                                  event, queue, pf_num, vf_num);
7036                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7037                 mdd_detected = true;
7038         }
7039         reg = rd32(hw, I40E_GL_MDET_RX);
7040         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7041                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7042                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7043                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7044                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7045                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7046                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7047                                 pf->hw.func_caps.base_queue;
7048                 if (netif_msg_rx_err(pf))
7049                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7050                                  event, queue, func);
7051                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7052                 mdd_detected = true;
7053         }
7054
7055         if (mdd_detected) {
7056                 reg = rd32(hw, I40E_PF_MDET_TX);
7057                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7058                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7059                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7060                         pf_mdd_detected = true;
7061                 }
7062                 reg = rd32(hw, I40E_PF_MDET_RX);
7063                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7064                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7065                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7066                         pf_mdd_detected = true;
7067                 }
7068                 /* Queue belongs to the PF, initiate a reset */
7069                 if (pf_mdd_detected) {
7070                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7071                         i40e_service_event_schedule(pf);
7072                 }
7073         }
7074
7075         /* see if one of the VFs needs its hand slapped */
7076         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7077                 vf = &(pf->vf[i]);
7078                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7079                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7080                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7081                         vf->num_mdd_events++;
7082                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7083                                  i);
7084                 }
7085
7086                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7087                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7088                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7089                         vf->num_mdd_events++;
7090                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7091                                  i);
7092                 }
7093
7094                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7095                         dev_info(&pf->pdev->dev,
7096                                  "Too many MDD events on VF %d, disabled\n", i);
7097                         dev_info(&pf->pdev->dev,
7098                                  "Use PF Control I/F to re-enable the VF\n");
7099                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7100                 }
7101         }
7102
7103         /* re-enable mdd interrupt cause */
7104         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7105         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7106         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7107         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7108         i40e_flush(hw);
7109 }
7110
7111 /**
7112  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7113  * @pf: board private structure
7114  **/
7115 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7116 {
7117         struct i40e_hw *hw = &pf->hw;
7118         i40e_status ret;
7119         __be16 port;
7120         int i;
7121
7122         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7123                 return;
7124
7125         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7126
7127         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7128                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7129                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7130                         port = pf->udp_ports[i].index;
7131                         if (port)
7132                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7133                                                         pf->udp_ports[i].type,
7134                                                         NULL, NULL);
7135                         else
7136                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7137
7138                         if (ret) {
7139                                 dev_dbg(&pf->pdev->dev,
7140                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7141                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7142                                         port ? "add" : "delete",
7143                                         ntohs(port), i,
7144                                         i40e_stat_str(&pf->hw, ret),
7145                                         i40e_aq_str(&pf->hw,
7146                                                     pf->hw.aq.asq_last_status));
7147                                 pf->udp_ports[i].index = 0;
7148                         }
7149                 }
7150         }
7151 }
7152
7153 /**
7154  * i40e_service_task - Run the driver's async subtasks
7155  * @work: pointer to work_struct containing our data
7156  **/
7157 static void i40e_service_task(struct work_struct *work)
7158 {
7159         struct i40e_pf *pf = container_of(work,
7160                                           struct i40e_pf,
7161                                           service_task);
7162         unsigned long start_time = jiffies;
7163
7164         /* don't bother with service tasks if a reset is in progress */
7165         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7166                 i40e_service_event_complete(pf);
7167                 return;
7168         }
7169
7170         i40e_detect_recover_hung(pf);
7171         i40e_sync_filters_subtask(pf);
7172         i40e_reset_subtask(pf);
7173         i40e_handle_mdd_event(pf);
7174         i40e_vc_process_vflr_event(pf);
7175         i40e_watchdog_subtask(pf);
7176         i40e_fdir_reinit_subtask(pf);
7177         i40e_client_subtask(pf);
7178         i40e_sync_filters_subtask(pf);
7179         i40e_sync_udp_filters_subtask(pf);
7180         i40e_clean_adminq_subtask(pf);
7181
7182         i40e_service_event_complete(pf);
7183
7184         /* If the tasks have taken longer than one timer cycle or there
7185          * is more work to be done, reschedule the service task now
7186          * rather than wait for the timer to tick again.
7187          */
7188         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7189             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7190             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7191             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7192                 i40e_service_event_schedule(pf);
7193 }
7194
7195 /**
7196  * i40e_service_timer - timer callback
7197  * @data: pointer to PF struct
7198  **/
7199 static void i40e_service_timer(unsigned long data)
7200 {
7201         struct i40e_pf *pf = (struct i40e_pf *)data;
7202
7203         mod_timer(&pf->service_timer,
7204                   round_jiffies(jiffies + pf->service_timer_period));
7205         i40e_service_event_schedule(pf);
7206 }
7207
7208 /**
7209  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7210  * @vsi: the VSI being configured
7211  **/
7212 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7213 {
7214         struct i40e_pf *pf = vsi->back;
7215
7216         switch (vsi->type) {
7217         case I40E_VSI_MAIN:
7218                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7219                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7220                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7221                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7222                         vsi->num_q_vectors = pf->num_lan_msix;
7223                 else
7224                         vsi->num_q_vectors = 1;
7225
7226                 break;
7227
7228         case I40E_VSI_FDIR:
7229                 vsi->alloc_queue_pairs = 1;
7230                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7231                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7232                 vsi->num_q_vectors = pf->num_fdsb_msix;
7233                 break;
7234
7235         case I40E_VSI_VMDQ2:
7236                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7237                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7238                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7239                 vsi->num_q_vectors = pf->num_vmdq_msix;
7240                 break;
7241
7242         case I40E_VSI_SRIOV:
7243                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7244                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7245                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7246                 break;
7247
7248 #ifdef I40E_FCOE
7249         case I40E_VSI_FCOE:
7250                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7251                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7252                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7253                 vsi->num_q_vectors = pf->num_fcoe_msix;
7254                 break;
7255
7256 #endif /* I40E_FCOE */
7257         default:
7258                 WARN_ON(1);
7259                 return -ENODATA;
7260         }
7261
7262         return 0;
7263 }
7264
7265 /**
7266  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7267  * @type: VSI pointer
7268  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7269  *
7270  * On error: returns error code (negative)
7271  * On success: returns 0
7272  **/
7273 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7274 {
7275         int size;
7276         int ret = 0;
7277
7278         /* allocate memory for both Tx and Rx ring pointers */
7279         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7280         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7281         if (!vsi->tx_rings)
7282                 return -ENOMEM;
7283         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7284
7285         if (alloc_qvectors) {
7286                 /* allocate memory for q_vector pointers */
7287                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7288                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7289                 if (!vsi->q_vectors) {
7290                         ret = -ENOMEM;
7291                         goto err_vectors;
7292                 }
7293         }
7294         return ret;
7295
7296 err_vectors:
7297         kfree(vsi->tx_rings);
7298         return ret;
7299 }
7300
7301 /**
7302  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7303  * @pf: board private structure
7304  * @type: type of VSI
7305  *
7306  * On error: returns error code (negative)
7307  * On success: returns vsi index in PF (positive)
7308  **/
7309 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7310 {
7311         int ret = -ENODEV;
7312         struct i40e_vsi *vsi;
7313         int vsi_idx;
7314         int i;
7315
7316         /* Need to protect the allocation of the VSIs at the PF level */
7317         mutex_lock(&pf->switch_mutex);
7318
7319         /* VSI list may be fragmented if VSI creation/destruction has
7320          * been happening.  We can afford to do a quick scan to look
7321          * for any free VSIs in the list.
7322          *
7323          * find next empty vsi slot, looping back around if necessary
7324          */
7325         i = pf->next_vsi;
7326         while (i < pf->num_alloc_vsi && pf->vsi[i])
7327                 i++;
7328         if (i >= pf->num_alloc_vsi) {
7329                 i = 0;
7330                 while (i < pf->next_vsi && pf->vsi[i])
7331                         i++;
7332         }
7333
7334         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7335                 vsi_idx = i;             /* Found one! */
7336         } else {
7337                 ret = -ENODEV;
7338                 goto unlock_pf;  /* out of VSI slots! */
7339         }
7340         pf->next_vsi = ++i;
7341
7342         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7343         if (!vsi) {
7344                 ret = -ENOMEM;
7345                 goto unlock_pf;
7346         }
7347         vsi->type = type;
7348         vsi->back = pf;
7349         set_bit(__I40E_DOWN, &vsi->state);
7350         vsi->flags = 0;
7351         vsi->idx = vsi_idx;
7352         vsi->int_rate_limit = 0;
7353         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7354                                 pf->rss_table_size : 64;
7355         vsi->netdev_registered = false;
7356         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7357         INIT_LIST_HEAD(&vsi->mac_filter_list);
7358         vsi->irqs_ready = false;
7359
7360         ret = i40e_set_num_rings_in_vsi(vsi);
7361         if (ret)
7362                 goto err_rings;
7363
7364         ret = i40e_vsi_alloc_arrays(vsi, true);
7365         if (ret)
7366                 goto err_rings;
7367
7368         /* Setup default MSIX irq handler for VSI */
7369         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7370
7371         /* Initialize VSI lock */
7372         spin_lock_init(&vsi->mac_filter_list_lock);
7373         pf->vsi[vsi_idx] = vsi;
7374         ret = vsi_idx;
7375         goto unlock_pf;
7376
7377 err_rings:
7378         pf->next_vsi = i - 1;
7379         kfree(vsi);
7380 unlock_pf:
7381         mutex_unlock(&pf->switch_mutex);
7382         return ret;
7383 }
7384
7385 /**
7386  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7387  * @type: VSI pointer
7388  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7389  *
7390  * On error: returns error code (negative)
7391  * On success: returns 0
7392  **/
7393 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7394 {
7395         /* free the ring and vector containers */
7396         if (free_qvectors) {
7397                 kfree(vsi->q_vectors);
7398                 vsi->q_vectors = NULL;
7399         }
7400         kfree(vsi->tx_rings);
7401         vsi->tx_rings = NULL;
7402         vsi->rx_rings = NULL;
7403 }
7404
7405 /**
7406  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7407  * and lookup table
7408  * @vsi: Pointer to VSI structure
7409  */
7410 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7411 {
7412         if (!vsi)
7413                 return;
7414
7415         kfree(vsi->rss_hkey_user);
7416         vsi->rss_hkey_user = NULL;
7417
7418         kfree(vsi->rss_lut_user);
7419         vsi->rss_lut_user = NULL;
7420 }
7421
7422 /**
7423  * i40e_vsi_clear - Deallocate the VSI provided
7424  * @vsi: the VSI being un-configured
7425  **/
7426 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7427 {
7428         struct i40e_pf *pf;
7429
7430         if (!vsi)
7431                 return 0;
7432
7433         if (!vsi->back)
7434                 goto free_vsi;
7435         pf = vsi->back;
7436
7437         mutex_lock(&pf->switch_mutex);
7438         if (!pf->vsi[vsi->idx]) {
7439                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7440                         vsi->idx, vsi->idx, vsi, vsi->type);
7441                 goto unlock_vsi;
7442         }
7443
7444         if (pf->vsi[vsi->idx] != vsi) {
7445                 dev_err(&pf->pdev->dev,
7446                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7447                         pf->vsi[vsi->idx]->idx,
7448                         pf->vsi[vsi->idx],
7449                         pf->vsi[vsi->idx]->type,
7450                         vsi->idx, vsi, vsi->type);
7451                 goto unlock_vsi;
7452         }
7453
7454         /* updates the PF for this cleared vsi */
7455         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7456         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7457
7458         i40e_vsi_free_arrays(vsi, true);
7459         i40e_clear_rss_config_user(vsi);
7460
7461         pf->vsi[vsi->idx] = NULL;
7462         if (vsi->idx < pf->next_vsi)
7463                 pf->next_vsi = vsi->idx;
7464
7465 unlock_vsi:
7466         mutex_unlock(&pf->switch_mutex);
7467 free_vsi:
7468         kfree(vsi);
7469
7470         return 0;
7471 }
7472
7473 /**
7474  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7475  * @vsi: the VSI being cleaned
7476  **/
7477 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7478 {
7479         int i;
7480
7481         if (vsi->tx_rings && vsi->tx_rings[0]) {
7482                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7483                         kfree_rcu(vsi->tx_rings[i], rcu);
7484                         vsi->tx_rings[i] = NULL;
7485                         vsi->rx_rings[i] = NULL;
7486                 }
7487         }
7488 }
7489
7490 /**
7491  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7492  * @vsi: the VSI being configured
7493  **/
7494 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7495 {
7496         struct i40e_ring *tx_ring, *rx_ring;
7497         struct i40e_pf *pf = vsi->back;
7498         int i;
7499
7500         /* Set basic values in the rings to be used later during open() */
7501         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7502                 /* allocate space for both Tx and Rx in one shot */
7503                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7504                 if (!tx_ring)
7505                         goto err_out;
7506
7507                 tx_ring->queue_index = i;
7508                 tx_ring->reg_idx = vsi->base_queue + i;
7509                 tx_ring->ring_active = false;
7510                 tx_ring->vsi = vsi;
7511                 tx_ring->netdev = vsi->netdev;
7512                 tx_ring->dev = &pf->pdev->dev;
7513                 tx_ring->count = vsi->num_desc;
7514                 tx_ring->size = 0;
7515                 tx_ring->dcb_tc = 0;
7516                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7517                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7518                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7519                 vsi->tx_rings[i] = tx_ring;
7520
7521                 rx_ring = &tx_ring[1];
7522                 rx_ring->queue_index = i;
7523                 rx_ring->reg_idx = vsi->base_queue + i;
7524                 rx_ring->ring_active = false;
7525                 rx_ring->vsi = vsi;
7526                 rx_ring->netdev = vsi->netdev;
7527                 rx_ring->dev = &pf->pdev->dev;
7528                 rx_ring->count = vsi->num_desc;
7529                 rx_ring->size = 0;
7530                 rx_ring->dcb_tc = 0;
7531                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7532                 vsi->rx_rings[i] = rx_ring;
7533         }
7534
7535         return 0;
7536
7537 err_out:
7538         i40e_vsi_clear_rings(vsi);
7539         return -ENOMEM;
7540 }
7541
7542 /**
7543  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7544  * @pf: board private structure
7545  * @vectors: the number of MSI-X vectors to request
7546  *
7547  * Returns the number of vectors reserved, or error
7548  **/
7549 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7550 {
7551         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7552                                         I40E_MIN_MSIX, vectors);
7553         if (vectors < 0) {
7554                 dev_info(&pf->pdev->dev,
7555                          "MSI-X vector reservation failed: %d\n", vectors);
7556                 vectors = 0;
7557         }
7558
7559         return vectors;
7560 }
7561
7562 /**
7563  * i40e_init_msix - Setup the MSIX capability
7564  * @pf: board private structure
7565  *
7566  * Work with the OS to set up the MSIX vectors needed.
7567  *
7568  * Returns the number of vectors reserved or negative on failure
7569  **/
7570 static int i40e_init_msix(struct i40e_pf *pf)
7571 {
7572         struct i40e_hw *hw = &pf->hw;
7573         int vectors_left;
7574         int v_budget, i;
7575         int v_actual;
7576         int iwarp_requested = 0;
7577
7578         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7579                 return -ENODEV;
7580
7581         /* The number of vectors we'll request will be comprised of:
7582          *   - Add 1 for "other" cause for Admin Queue events, etc.
7583          *   - The number of LAN queue pairs
7584          *      - Queues being used for RSS.
7585          *              We don't need as many as max_rss_size vectors.
7586          *              use rss_size instead in the calculation since that
7587          *              is governed by number of cpus in the system.
7588          *      - assumes symmetric Tx/Rx pairing
7589          *   - The number of VMDq pairs
7590          *   - The CPU count within the NUMA node if iWARP is enabled
7591 #ifdef I40E_FCOE
7592          *   - The number of FCOE qps.
7593 #endif
7594          * Once we count this up, try the request.
7595          *
7596          * If we can't get what we want, we'll simplify to nearly nothing
7597          * and try again.  If that still fails, we punt.
7598          */
7599         vectors_left = hw->func_caps.num_msix_vectors;
7600         v_budget = 0;
7601
7602         /* reserve one vector for miscellaneous handler */
7603         if (vectors_left) {
7604                 v_budget++;
7605                 vectors_left--;
7606         }
7607
7608         /* reserve vectors for the main PF traffic queues */
7609         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7610         vectors_left -= pf->num_lan_msix;
7611         v_budget += pf->num_lan_msix;
7612
7613         /* reserve one vector for sideband flow director */
7614         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7615                 if (vectors_left) {
7616                         pf->num_fdsb_msix = 1;
7617                         v_budget++;
7618                         vectors_left--;
7619                 } else {
7620                         pf->num_fdsb_msix = 0;
7621                 }
7622         }
7623
7624 #ifdef I40E_FCOE
7625         /* can we reserve enough for FCoE? */
7626         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7627                 if (!vectors_left)
7628                         pf->num_fcoe_msix = 0;
7629                 else if (vectors_left >= pf->num_fcoe_qps)
7630                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7631                 else
7632                         pf->num_fcoe_msix = 1;
7633                 v_budget += pf->num_fcoe_msix;
7634                 vectors_left -= pf->num_fcoe_msix;
7635         }
7636
7637 #endif
7638         /* can we reserve enough for iWARP? */
7639         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7640                 iwarp_requested = pf->num_iwarp_msix;
7641
7642                 if (!vectors_left)
7643                         pf->num_iwarp_msix = 0;
7644                 else if (vectors_left < pf->num_iwarp_msix)
7645                         pf->num_iwarp_msix = 1;
7646                 v_budget += pf->num_iwarp_msix;
7647                 vectors_left -= pf->num_iwarp_msix;
7648         }
7649
7650         /* any vectors left over go for VMDq support */
7651         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7652                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7653                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7654
7655                 if (!vectors_left) {
7656                         pf->num_vmdq_msix = 0;
7657                         pf->num_vmdq_qps = 0;
7658                 } else {
7659                         /* if we're short on vectors for what's desired, we limit
7660                          * the queues per vmdq.  If this is still more than are
7661                          * available, the user will need to change the number of
7662                          * queues/vectors used by the PF later with the ethtool
7663                          * channels command
7664                          */
7665                         if (vmdq_vecs < vmdq_vecs_wanted)
7666                                 pf->num_vmdq_qps = 1;
7667                         pf->num_vmdq_msix = pf->num_vmdq_qps;
7668
7669                         v_budget += vmdq_vecs;
7670                         vectors_left -= vmdq_vecs;
7671                 }
7672         }
7673
7674         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7675                                    GFP_KERNEL);
7676         if (!pf->msix_entries)
7677                 return -ENOMEM;
7678
7679         for (i = 0; i < v_budget; i++)
7680                 pf->msix_entries[i].entry = i;
7681         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7682
7683         if (v_actual < I40E_MIN_MSIX) {
7684                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7685                 kfree(pf->msix_entries);
7686                 pf->msix_entries = NULL;
7687                 pci_disable_msix(pf->pdev);
7688                 return -ENODEV;
7689
7690         } else if (v_actual == I40E_MIN_MSIX) {
7691                 /* Adjust for minimal MSIX use */
7692                 pf->num_vmdq_vsis = 0;
7693                 pf->num_vmdq_qps = 0;
7694                 pf->num_lan_qps = 1;
7695                 pf->num_lan_msix = 1;
7696
7697         } else if (!vectors_left) {
7698                 /* If we have limited resources, we will start with no vectors
7699                  * for the special features and then allocate vectors to some
7700                  * of these features based on the policy and at the end disable
7701                  * the features that did not get any vectors.
7702                  */
7703                 int vec;
7704
7705                 dev_info(&pf->pdev->dev,
7706                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
7707                 /* reserve the misc vector */
7708                 vec = v_actual - 1;
7709
7710                 /* Scale vector usage down */
7711                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7712                 pf->num_vmdq_vsis = 1;
7713                 pf->num_vmdq_qps = 1;
7714 #ifdef I40E_FCOE
7715                 pf->num_fcoe_qps = 0;
7716                 pf->num_fcoe_msix = 0;
7717 #endif
7718
7719                 /* partition out the remaining vectors */
7720                 switch (vec) {
7721                 case 2:
7722                         pf->num_lan_msix = 1;
7723                         break;
7724                 case 3:
7725                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7726                                 pf->num_lan_msix = 1;
7727                                 pf->num_iwarp_msix = 1;
7728                         } else {
7729                                 pf->num_lan_msix = 2;
7730                         }
7731 #ifdef I40E_FCOE
7732                         /* give one vector to FCoE */
7733                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7734                                 pf->num_lan_msix = 1;
7735                                 pf->num_fcoe_msix = 1;
7736                         }
7737 #endif
7738                         break;
7739                 default:
7740                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7741                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7742                                                  iwarp_requested);
7743                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7744                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7745                         } else {
7746                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7747                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7748                         }
7749                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7750                                 pf->num_fdsb_msix = 1;
7751                                 vec--;
7752                         }
7753                         pf->num_lan_msix = min_t(int,
7754                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7755                                                               pf->num_lan_msix);
7756                         pf->num_lan_qps = pf->num_lan_msix;
7757 #ifdef I40E_FCOE
7758                         /* give one vector to FCoE */
7759                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7760                                 pf->num_fcoe_msix = 1;
7761                                 vec--;
7762                         }
7763 #endif
7764                         break;
7765                 }
7766         }
7767
7768         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
7769             (pf->num_fdsb_msix == 0)) {
7770                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
7771                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7772         }
7773         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7774             (pf->num_vmdq_msix == 0)) {
7775                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7776                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7777         }
7778
7779         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7780             (pf->num_iwarp_msix == 0)) {
7781                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7782                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7783         }
7784 #ifdef I40E_FCOE
7785
7786         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7787                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7788                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7789         }
7790 #endif
7791         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
7792                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
7793                    pf->num_lan_msix,
7794                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
7795                    pf->num_fdsb_msix,
7796                    pf->num_iwarp_msix);
7797
7798         return v_actual;
7799 }
7800
7801 /**
7802  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7803  * @vsi: the VSI being configured
7804  * @v_idx: index of the vector in the vsi struct
7805  * @cpu: cpu to be used on affinity_mask
7806  *
7807  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7808  **/
7809 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7810 {
7811         struct i40e_q_vector *q_vector;
7812
7813         /* allocate q_vector */
7814         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7815         if (!q_vector)
7816                 return -ENOMEM;
7817
7818         q_vector->vsi = vsi;
7819         q_vector->v_idx = v_idx;
7820         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7821
7822         if (vsi->netdev)
7823                 netif_napi_add(vsi->netdev, &q_vector->napi,
7824                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7825
7826         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7827         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7828
7829         /* tie q_vector and vsi together */
7830         vsi->q_vectors[v_idx] = q_vector;
7831
7832         return 0;
7833 }
7834
7835 /**
7836  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7837  * @vsi: the VSI being configured
7838  *
7839  * We allocate one q_vector per queue interrupt.  If allocation fails we
7840  * return -ENOMEM.
7841  **/
7842 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7843 {
7844         struct i40e_pf *pf = vsi->back;
7845         int err, v_idx, num_q_vectors, current_cpu;
7846
7847         /* if not MSIX, give the one vector only to the LAN VSI */
7848         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7849                 num_q_vectors = vsi->num_q_vectors;
7850         else if (vsi == pf->vsi[pf->lan_vsi])
7851                 num_q_vectors = 1;
7852         else
7853                 return -EINVAL;
7854
7855         current_cpu = cpumask_first(cpu_online_mask);
7856
7857         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7858                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7859                 if (err)
7860                         goto err_out;
7861                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7862                 if (unlikely(current_cpu >= nr_cpu_ids))
7863                         current_cpu = cpumask_first(cpu_online_mask);
7864         }
7865
7866         return 0;
7867
7868 err_out:
7869         while (v_idx--)
7870                 i40e_free_q_vector(vsi, v_idx);
7871
7872         return err;
7873 }
7874
7875 /**
7876  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7877  * @pf: board private structure to initialize
7878  **/
7879 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7880 {
7881         int vectors = 0;
7882         ssize_t size;
7883
7884         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7885                 vectors = i40e_init_msix(pf);
7886                 if (vectors < 0) {
7887                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7888                                        I40E_FLAG_IWARP_ENABLED  |
7889 #ifdef I40E_FCOE
7890                                        I40E_FLAG_FCOE_ENABLED   |
7891 #endif
7892                                        I40E_FLAG_RSS_ENABLED    |
7893                                        I40E_FLAG_DCB_CAPABLE    |
7894                                        I40E_FLAG_DCB_ENABLED    |
7895                                        I40E_FLAG_SRIOV_ENABLED  |
7896                                        I40E_FLAG_FD_SB_ENABLED  |
7897                                        I40E_FLAG_FD_ATR_ENABLED |
7898                                        I40E_FLAG_VMDQ_ENABLED);
7899
7900                         /* rework the queue expectations without MSIX */
7901                         i40e_determine_queue_usage(pf);
7902                 }
7903         }
7904
7905         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7906             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7907                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7908                 vectors = pci_enable_msi(pf->pdev);
7909                 if (vectors < 0) {
7910                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7911                                  vectors);
7912                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7913                 }
7914                 vectors = 1;  /* one MSI or Legacy vector */
7915         }
7916
7917         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7918                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7919
7920         /* set up vector assignment tracking */
7921         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7922         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7923         if (!pf->irq_pile) {
7924                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7925                 return -ENOMEM;
7926         }
7927         pf->irq_pile->num_entries = vectors;
7928         pf->irq_pile->search_hint = 0;
7929
7930         /* track first vector for misc interrupts, ignore return */
7931         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7932
7933         return 0;
7934 }
7935
7936 /**
7937  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7938  * @pf: board private structure
7939  *
7940  * This sets up the handler for MSIX 0, which is used to manage the
7941  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7942  * when in MSI or Legacy interrupt mode.
7943  **/
7944 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7945 {
7946         struct i40e_hw *hw = &pf->hw;
7947         int err = 0;
7948
7949         /* Only request the irq if this is the first time through, and
7950          * not when we're rebuilding after a Reset
7951          */
7952         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7953                 err = request_irq(pf->msix_entries[0].vector,
7954                                   i40e_intr, 0, pf->int_name, pf);
7955                 if (err) {
7956                         dev_info(&pf->pdev->dev,
7957                                  "request_irq for %s failed: %d\n",
7958                                  pf->int_name, err);
7959                         return -EFAULT;
7960                 }
7961         }
7962
7963         i40e_enable_misc_int_causes(pf);
7964
7965         /* associate no queues to the misc vector */
7966         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7967         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7968
7969         i40e_flush(hw);
7970
7971         i40e_irq_dynamic_enable_icr0(pf, true);
7972
7973         return err;
7974 }
7975
7976 /**
7977  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7978  * @vsi: vsi structure
7979  * @seed: RSS hash seed
7980  **/
7981 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7982                               u8 *lut, u16 lut_size)
7983 {
7984         struct i40e_pf *pf = vsi->back;
7985         struct i40e_hw *hw = &pf->hw;
7986         int ret = 0;
7987
7988         if (seed) {
7989                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
7990                         (struct i40e_aqc_get_set_rss_key_data *)seed;
7991                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
7992                 if (ret) {
7993                         dev_info(&pf->pdev->dev,
7994                                  "Cannot set RSS key, err %s aq_err %s\n",
7995                                  i40e_stat_str(hw, ret),
7996                                  i40e_aq_str(hw, hw->aq.asq_last_status));
7997                         return ret;
7998                 }
7999         }
8000         if (lut) {
8001                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8002
8003                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8004                 if (ret) {
8005                         dev_info(&pf->pdev->dev,
8006                                  "Cannot set RSS lut, err %s aq_err %s\n",
8007                                  i40e_stat_str(hw, ret),
8008                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8009                         return ret;
8010                 }
8011         }
8012         return ret;
8013 }
8014
8015 /**
8016  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8017  * @vsi: Pointer to vsi structure
8018  * @seed: Buffter to store the hash keys
8019  * @lut: Buffer to store the lookup table entries
8020  * @lut_size: Size of buffer to store the lookup table entries
8021  *
8022  * Return 0 on success, negative on failure
8023  */
8024 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8025                            u8 *lut, u16 lut_size)
8026 {
8027         struct i40e_pf *pf = vsi->back;
8028         struct i40e_hw *hw = &pf->hw;
8029         int ret = 0;
8030
8031         if (seed) {
8032                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8033                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8034                 if (ret) {
8035                         dev_info(&pf->pdev->dev,
8036                                  "Cannot get RSS key, err %s aq_err %s\n",
8037                                  i40e_stat_str(&pf->hw, ret),
8038                                  i40e_aq_str(&pf->hw,
8039                                              pf->hw.aq.asq_last_status));
8040                         return ret;
8041                 }
8042         }
8043
8044         if (lut) {
8045                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8046
8047                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8048                 if (ret) {
8049                         dev_info(&pf->pdev->dev,
8050                                  "Cannot get RSS lut, err %s aq_err %s\n",
8051                                  i40e_stat_str(&pf->hw, ret),
8052                                  i40e_aq_str(&pf->hw,
8053                                              pf->hw.aq.asq_last_status));
8054                         return ret;
8055                 }
8056         }
8057
8058         return ret;
8059 }
8060
8061 /**
8062  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8063  * @vsi: VSI structure
8064  **/
8065 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8066 {
8067         u8 seed[I40E_HKEY_ARRAY_SIZE];
8068         struct i40e_pf *pf = vsi->back;
8069         u8 *lut;
8070         int ret;
8071
8072         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8073                 return 0;
8074
8075         if (!vsi->rss_size)
8076                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8077                                       vsi->num_queue_pairs);
8078         if (!vsi->rss_size)
8079                 return -EINVAL;
8080
8081         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8082         if (!lut)
8083                 return -ENOMEM;
8084         /* Use the user configured hash keys and lookup table if there is one,
8085          * otherwise use default
8086          */
8087         if (vsi->rss_lut_user)
8088                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8089         else
8090                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8091         if (vsi->rss_hkey_user)
8092                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8093         else
8094                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8095         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8096         kfree(lut);
8097
8098         return ret;
8099 }
8100
8101 /**
8102  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8103  * @vsi: Pointer to vsi structure
8104  * @seed: RSS hash seed
8105  * @lut: Lookup table
8106  * @lut_size: Lookup table size
8107  *
8108  * Returns 0 on success, negative on failure
8109  **/
8110 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8111                                const u8 *lut, u16 lut_size)
8112 {
8113         struct i40e_pf *pf = vsi->back;
8114         struct i40e_hw *hw = &pf->hw;
8115         u16 vf_id = vsi->vf_id;
8116         u8 i;
8117
8118         /* Fill out hash function seed */
8119         if (seed) {
8120                 u32 *seed_dw = (u32 *)seed;
8121
8122                 if (vsi->type == I40E_VSI_MAIN) {
8123                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8124                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8125                                                   seed_dw[i]);
8126                 } else if (vsi->type == I40E_VSI_SRIOV) {
8127                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8128                                 i40e_write_rx_ctl(hw,
8129                                                   I40E_VFQF_HKEY1(i, vf_id),
8130                                                   seed_dw[i]);
8131                 } else {
8132                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8133                 }
8134         }
8135
8136         if (lut) {
8137                 u32 *lut_dw = (u32 *)lut;
8138
8139                 if (vsi->type == I40E_VSI_MAIN) {
8140                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8141                                 return -EINVAL;
8142                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8143                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8144                 } else if (vsi->type == I40E_VSI_SRIOV) {
8145                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8146                                 return -EINVAL;
8147                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8148                                 i40e_write_rx_ctl(hw,
8149                                                   I40E_VFQF_HLUT1(i, vf_id),
8150                                                   lut_dw[i]);
8151                 } else {
8152                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8153                 }
8154         }
8155         i40e_flush(hw);
8156
8157         return 0;
8158 }
8159
8160 /**
8161  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8162  * @vsi: Pointer to VSI structure
8163  * @seed: Buffer to store the keys
8164  * @lut: Buffer to store the lookup table entries
8165  * @lut_size: Size of buffer to store the lookup table entries
8166  *
8167  * Returns 0 on success, negative on failure
8168  */
8169 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8170                             u8 *lut, u16 lut_size)
8171 {
8172         struct i40e_pf *pf = vsi->back;
8173         struct i40e_hw *hw = &pf->hw;
8174         u16 i;
8175
8176         if (seed) {
8177                 u32 *seed_dw = (u32 *)seed;
8178
8179                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8180                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8181         }
8182         if (lut) {
8183                 u32 *lut_dw = (u32 *)lut;
8184
8185                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8186                         return -EINVAL;
8187                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8188                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8189         }
8190
8191         return 0;
8192 }
8193
8194 /**
8195  * i40e_config_rss - Configure RSS keys and lut
8196  * @vsi: Pointer to VSI structure
8197  * @seed: RSS hash seed
8198  * @lut: Lookup table
8199  * @lut_size: Lookup table size
8200  *
8201  * Returns 0 on success, negative on failure
8202  */
8203 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8204 {
8205         struct i40e_pf *pf = vsi->back;
8206
8207         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8208                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8209         else
8210                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8211 }
8212
8213 /**
8214  * i40e_get_rss - Get RSS keys and lut
8215  * @vsi: Pointer to VSI structure
8216  * @seed: Buffer to store the keys
8217  * @lut: Buffer to store the lookup table entries
8218  * lut_size: Size of buffer to store the lookup table entries
8219  *
8220  * Returns 0 on success, negative on failure
8221  */
8222 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8223 {
8224         struct i40e_pf *pf = vsi->back;
8225
8226         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8227                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8228         else
8229                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8230 }
8231
8232 /**
8233  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8234  * @pf: Pointer to board private structure
8235  * @lut: Lookup table
8236  * @rss_table_size: Lookup table size
8237  * @rss_size: Range of queue number for hashing
8238  */
8239 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8240                        u16 rss_table_size, u16 rss_size)
8241 {
8242         u16 i;
8243
8244         for (i = 0; i < rss_table_size; i++)
8245                 lut[i] = i % rss_size;
8246 }
8247
8248 /**
8249  * i40e_pf_config_rss - Prepare for RSS if used
8250  * @pf: board private structure
8251  **/
8252 static int i40e_pf_config_rss(struct i40e_pf *pf)
8253 {
8254         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8255         u8 seed[I40E_HKEY_ARRAY_SIZE];
8256         u8 *lut;
8257         struct i40e_hw *hw = &pf->hw;
8258         u32 reg_val;
8259         u64 hena;
8260         int ret;
8261
8262         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8263         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8264                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8265         hena |= i40e_pf_get_default_rss_hena(pf);
8266
8267         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8268         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8269
8270         /* Determine the RSS table size based on the hardware capabilities */
8271         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8272         reg_val = (pf->rss_table_size == 512) ?
8273                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8274                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8275         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8276
8277         /* Determine the RSS size of the VSI */
8278         if (!vsi->rss_size)
8279                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8280                                       vsi->num_queue_pairs);
8281         if (!vsi->rss_size)
8282                 return -EINVAL;
8283
8284         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8285         if (!lut)
8286                 return -ENOMEM;
8287
8288         /* Use user configured lut if there is one, otherwise use default */
8289         if (vsi->rss_lut_user)
8290                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8291         else
8292                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8293
8294         /* Use user configured hash key if there is one, otherwise
8295          * use default.
8296          */
8297         if (vsi->rss_hkey_user)
8298                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8299         else
8300                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8301         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8302         kfree(lut);
8303
8304         return ret;
8305 }
8306
8307 /**
8308  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8309  * @pf: board private structure
8310  * @queue_count: the requested queue count for rss.
8311  *
8312  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8313  * count which may be different from the requested queue count.
8314  **/
8315 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8316 {
8317         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8318         int new_rss_size;
8319
8320         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8321                 return 0;
8322
8323         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8324
8325         if (queue_count != vsi->num_queue_pairs) {
8326                 vsi->req_queue_pairs = queue_count;
8327                 i40e_prep_for_reset(pf);
8328
8329                 pf->alloc_rss_size = new_rss_size;
8330
8331                 i40e_reset_and_rebuild(pf, true);
8332
8333                 /* Discard the user configured hash keys and lut, if less
8334                  * queues are enabled.
8335                  */
8336                 if (queue_count < vsi->rss_size) {
8337                         i40e_clear_rss_config_user(vsi);
8338                         dev_dbg(&pf->pdev->dev,
8339                                 "discard user configured hash keys and lut\n");
8340                 }
8341
8342                 /* Reset vsi->rss_size, as number of enabled queues changed */
8343                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8344                                       vsi->num_queue_pairs);
8345
8346                 i40e_pf_config_rss(pf);
8347         }
8348         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8349                  pf->alloc_rss_size, pf->rss_size_max);
8350         return pf->alloc_rss_size;
8351 }
8352
8353 /**
8354  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8355  * @pf: board private structure
8356  **/
8357 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8358 {
8359         i40e_status status;
8360         bool min_valid, max_valid;
8361         u32 max_bw, min_bw;
8362
8363         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8364                                            &min_valid, &max_valid);
8365
8366         if (!status) {
8367                 if (min_valid)
8368                         pf->npar_min_bw = min_bw;
8369                 if (max_valid)
8370                         pf->npar_max_bw = max_bw;
8371         }
8372
8373         return status;
8374 }
8375
8376 /**
8377  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8378  * @pf: board private structure
8379  **/
8380 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8381 {
8382         struct i40e_aqc_configure_partition_bw_data bw_data;
8383         i40e_status status;
8384
8385         /* Set the valid bit for this PF */
8386         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8387         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8388         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8389
8390         /* Set the new bandwidths */
8391         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8392
8393         return status;
8394 }
8395
8396 /**
8397  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8398  * @pf: board private structure
8399  **/
8400 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8401 {
8402         /* Commit temporary BW setting to permanent NVM image */
8403         enum i40e_admin_queue_err last_aq_status;
8404         i40e_status ret;
8405         u16 nvm_word;
8406
8407         if (pf->hw.partition_id != 1) {
8408                 dev_info(&pf->pdev->dev,
8409                          "Commit BW only works on partition 1! This is partition %d",
8410                          pf->hw.partition_id);
8411                 ret = I40E_NOT_SUPPORTED;
8412                 goto bw_commit_out;
8413         }
8414
8415         /* Acquire NVM for read access */
8416         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8417         last_aq_status = pf->hw.aq.asq_last_status;
8418         if (ret) {
8419                 dev_info(&pf->pdev->dev,
8420                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8421                          i40e_stat_str(&pf->hw, ret),
8422                          i40e_aq_str(&pf->hw, last_aq_status));
8423                 goto bw_commit_out;
8424         }
8425
8426         /* Read word 0x10 of NVM - SW compatibility word 1 */
8427         ret = i40e_aq_read_nvm(&pf->hw,
8428                                I40E_SR_NVM_CONTROL_WORD,
8429                                0x10, sizeof(nvm_word), &nvm_word,
8430                                false, NULL);
8431         /* Save off last admin queue command status before releasing
8432          * the NVM
8433          */
8434         last_aq_status = pf->hw.aq.asq_last_status;
8435         i40e_release_nvm(&pf->hw);
8436         if (ret) {
8437                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8438                          i40e_stat_str(&pf->hw, ret),
8439                          i40e_aq_str(&pf->hw, last_aq_status));
8440                 goto bw_commit_out;
8441         }
8442
8443         /* Wait a bit for NVM release to complete */
8444         msleep(50);
8445
8446         /* Acquire NVM for write access */
8447         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8448         last_aq_status = pf->hw.aq.asq_last_status;
8449         if (ret) {
8450                 dev_info(&pf->pdev->dev,
8451                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8452                          i40e_stat_str(&pf->hw, ret),
8453                          i40e_aq_str(&pf->hw, last_aq_status));
8454                 goto bw_commit_out;
8455         }
8456         /* Write it back out unchanged to initiate update NVM,
8457          * which will force a write of the shadow (alt) RAM to
8458          * the NVM - thus storing the bandwidth values permanently.
8459          */
8460         ret = i40e_aq_update_nvm(&pf->hw,
8461                                  I40E_SR_NVM_CONTROL_WORD,
8462                                  0x10, sizeof(nvm_word),
8463                                  &nvm_word, true, NULL);
8464         /* Save off last admin queue command status before releasing
8465          * the NVM
8466          */
8467         last_aq_status = pf->hw.aq.asq_last_status;
8468         i40e_release_nvm(&pf->hw);
8469         if (ret)
8470                 dev_info(&pf->pdev->dev,
8471                          "BW settings NOT SAVED, err %s aq_err %s\n",
8472                          i40e_stat_str(&pf->hw, ret),
8473                          i40e_aq_str(&pf->hw, last_aq_status));
8474 bw_commit_out:
8475
8476         return ret;
8477 }
8478
8479 /**
8480  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8481  * @pf: board private structure to initialize
8482  *
8483  * i40e_sw_init initializes the Adapter private data structure.
8484  * Fields are initialized based on PCI device information and
8485  * OS network device settings (MTU size).
8486  **/
8487 static int i40e_sw_init(struct i40e_pf *pf)
8488 {
8489         int err = 0;
8490         int size;
8491
8492         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8493                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8494         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8495                 if (I40E_DEBUG_USER & debug)
8496                         pf->hw.debug_mask = debug;
8497                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8498                                                 I40E_DEFAULT_MSG_ENABLE);
8499         }
8500
8501         /* Set default capability flags */
8502         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8503                     I40E_FLAG_MSI_ENABLED     |
8504                     I40E_FLAG_MSIX_ENABLED;
8505
8506         /* Set default ITR */
8507         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8508         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8509
8510         /* Depending on PF configurations, it is possible that the RSS
8511          * maximum might end up larger than the available queues
8512          */
8513         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8514         pf->alloc_rss_size = 1;
8515         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8516         pf->rss_size_max = min_t(int, pf->rss_size_max,
8517                                  pf->hw.func_caps.num_tx_qp);
8518         if (pf->hw.func_caps.rss) {
8519                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8520                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8521                                            num_online_cpus());
8522         }
8523
8524         /* MFP mode enabled */
8525         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8526                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8527                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8528                 if (i40e_get_npar_bw_setting(pf))
8529                         dev_warn(&pf->pdev->dev,
8530                                  "Could not get NPAR bw settings\n");
8531                 else
8532                         dev_info(&pf->pdev->dev,
8533                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8534                                  pf->npar_min_bw, pf->npar_max_bw);
8535         }
8536
8537         /* FW/NVM is not yet fixed in this regard */
8538         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8539             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8540                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8541                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8542                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8543                     pf->hw.num_partitions > 1)
8544                         dev_info(&pf->pdev->dev,
8545                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8546                 else
8547                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8548                 pf->fdir_pf_filter_count =
8549                                  pf->hw.func_caps.fd_filters_guaranteed;
8550                 pf->hw.fdir_shared_filter_count =
8551                                  pf->hw.func_caps.fd_filters_best_effort;
8552         }
8553
8554         if (i40e_is_mac_710(&pf->hw) &&
8555             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8556             (pf->hw.aq.fw_maj_ver < 4))) {
8557                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8558                 /* No DCB support  for FW < v4.33 */
8559                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8560         }
8561
8562         /* Disable FW LLDP if FW < v4.3 */
8563         if (i40e_is_mac_710(&pf->hw) &&
8564             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8565             (pf->hw.aq.fw_maj_ver < 4)))
8566                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8567
8568         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8569         if (i40e_is_mac_710(&pf->hw) &&
8570             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8571             (pf->hw.aq.fw_maj_ver >= 5)))
8572                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8573
8574         if (pf->hw.func_caps.vmdq) {
8575                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8576                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8577                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8578         }
8579
8580         if (pf->hw.func_caps.iwarp) {
8581                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8582                 /* IWARP needs one extra vector for CQP just like MISC.*/
8583                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8584         }
8585
8586 #ifdef I40E_FCOE
8587         i40e_init_pf_fcoe(pf);
8588
8589 #endif /* I40E_FCOE */
8590 #ifdef CONFIG_PCI_IOV
8591         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8592                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8593                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8594                 pf->num_req_vfs = min_t(int,
8595                                         pf->hw.func_caps.num_vfs,
8596                                         I40E_MAX_VF_COUNT);
8597         }
8598 #endif /* CONFIG_PCI_IOV */
8599         if (pf->hw.mac.type == I40E_MAC_X722) {
8600                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8601                              I40E_FLAG_128_QP_RSS_CAPABLE |
8602                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8603                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8604                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8605                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8606                              I40E_FLAG_NO_PCI_LINK_CHECK |
8607                              I40E_FLAG_USE_SET_LLDP_MIB |
8608                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8609         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8610                    ((pf->hw.aq.api_maj_ver == 1) &&
8611                     (pf->hw.aq.api_min_ver > 4))) {
8612                 /* Supported in FW API version higher than 1.4 */
8613                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8614                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8615         } else {
8616                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8617         }
8618
8619         pf->eeprom_version = 0xDEAD;
8620         pf->lan_veb = I40E_NO_VEB;
8621         pf->lan_vsi = I40E_NO_VSI;
8622
8623         /* By default FW has this off for performance reasons */
8624         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8625
8626         /* set up queue assignment tracking */
8627         size = sizeof(struct i40e_lump_tracking)
8628                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8629         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8630         if (!pf->qp_pile) {
8631                 err = -ENOMEM;
8632                 goto sw_init_done;
8633         }
8634         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8635         pf->qp_pile->search_hint = 0;
8636
8637         pf->tx_timeout_recovery_level = 1;
8638
8639         mutex_init(&pf->switch_mutex);
8640
8641         /* If NPAR is enabled nudge the Tx scheduler */
8642         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8643                 i40e_set_npar_bw_setting(pf);
8644
8645 sw_init_done:
8646         return err;
8647 }
8648
8649 /**
8650  * i40e_set_ntuple - set the ntuple feature flag and take action
8651  * @pf: board private structure to initialize
8652  * @features: the feature set that the stack is suggesting
8653  *
8654  * returns a bool to indicate if reset needs to happen
8655  **/
8656 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8657 {
8658         bool need_reset = false;
8659
8660         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8661          * the state changed, we need to reset.
8662          */
8663         if (features & NETIF_F_NTUPLE) {
8664                 /* Enable filters and mark for reset */
8665                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8666                         need_reset = true;
8667                 /* enable FD_SB only if there is MSI-X vector */
8668                 if (pf->num_fdsb_msix > 0)
8669                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8670         } else {
8671                 /* turn off filters, mark for reset and clear SW filter list */
8672                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8673                         need_reset = true;
8674                         i40e_fdir_filter_exit(pf);
8675                 }
8676                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8677                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8678                 /* reset fd counters */
8679                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8680                 pf->fdir_pf_active_filters = 0;
8681                 /* if ATR was auto disabled it can be re-enabled. */
8682                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8683                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8684                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8685                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8686                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8687                 }
8688         }
8689         return need_reset;
8690 }
8691
8692 /**
8693  * i40e_clear_rss_lut - clear the rx hash lookup table
8694  * @vsi: the VSI being configured
8695  **/
8696 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8697 {
8698         struct i40e_pf *pf = vsi->back;
8699         struct i40e_hw *hw = &pf->hw;
8700         u16 vf_id = vsi->vf_id;
8701         u8 i;
8702
8703         if (vsi->type == I40E_VSI_MAIN) {
8704                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8705                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8706         } else if (vsi->type == I40E_VSI_SRIOV) {
8707                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8708                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8709         } else {
8710                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8711         }
8712 }
8713
8714 /**
8715  * i40e_set_features - set the netdev feature flags
8716  * @netdev: ptr to the netdev being adjusted
8717  * @features: the feature set that the stack is suggesting
8718  **/
8719 static int i40e_set_features(struct net_device *netdev,
8720                              netdev_features_t features)
8721 {
8722         struct i40e_netdev_priv *np = netdev_priv(netdev);
8723         struct i40e_vsi *vsi = np->vsi;
8724         struct i40e_pf *pf = vsi->back;
8725         bool need_reset;
8726
8727         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8728                 i40e_pf_config_rss(pf);
8729         else if (!(features & NETIF_F_RXHASH) &&
8730                  netdev->features & NETIF_F_RXHASH)
8731                 i40e_clear_rss_lut(vsi);
8732
8733         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8734                 i40e_vlan_stripping_enable(vsi);
8735         else
8736                 i40e_vlan_stripping_disable(vsi);
8737
8738         need_reset = i40e_set_ntuple(pf, features);
8739
8740         if (need_reset)
8741                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8742
8743         return 0;
8744 }
8745
8746 /**
8747  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8748  * @pf: board private structure
8749  * @port: The UDP port to look up
8750  *
8751  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8752  **/
8753 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8754 {
8755         u8 i;
8756
8757         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8758                 if (pf->udp_ports[i].index == port)
8759                         return i;
8760         }
8761
8762         return i;
8763 }
8764
8765 /**
8766  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8767  * @netdev: This physical port's netdev
8768  * @ti: Tunnel endpoint information
8769  **/
8770 static void i40e_udp_tunnel_add(struct net_device *netdev,
8771                                 struct udp_tunnel_info *ti)
8772 {
8773         struct i40e_netdev_priv *np = netdev_priv(netdev);
8774         struct i40e_vsi *vsi = np->vsi;
8775         struct i40e_pf *pf = vsi->back;
8776         __be16 port = ti->port;
8777         u8 next_idx;
8778         u8 idx;
8779
8780         idx = i40e_get_udp_port_idx(pf, port);
8781
8782         /* Check if port already exists */
8783         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8784                 netdev_info(netdev, "port %d already offloaded\n",
8785                             ntohs(port));
8786                 return;
8787         }
8788
8789         /* Now check if there is space to add the new port */
8790         next_idx = i40e_get_udp_port_idx(pf, 0);
8791
8792         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8793                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8794                             ntohs(port));
8795                 return;
8796         }
8797
8798         switch (ti->type) {
8799         case UDP_TUNNEL_TYPE_VXLAN:
8800                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8801                 break;
8802         case UDP_TUNNEL_TYPE_GENEVE:
8803                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8804                         return;
8805                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8806                 break;
8807         default:
8808                 return;
8809         }
8810
8811         /* New port: add it and mark its index in the bitmap */
8812         pf->udp_ports[next_idx].index = port;
8813         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8814         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8815 }
8816
8817 /**
8818  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8819  * @netdev: This physical port's netdev
8820  * @ti: Tunnel endpoint information
8821  **/
8822 static void i40e_udp_tunnel_del(struct net_device *netdev,
8823                                 struct udp_tunnel_info *ti)
8824 {
8825         struct i40e_netdev_priv *np = netdev_priv(netdev);
8826         struct i40e_vsi *vsi = np->vsi;
8827         struct i40e_pf *pf = vsi->back;
8828         __be16 port = ti->port;
8829         u8 idx;
8830
8831         idx = i40e_get_udp_port_idx(pf, port);
8832
8833         /* Check if port already exists */
8834         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8835                 goto not_found;
8836
8837         switch (ti->type) {
8838         case UDP_TUNNEL_TYPE_VXLAN:
8839                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8840                         goto not_found;
8841                 break;
8842         case UDP_TUNNEL_TYPE_GENEVE:
8843                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8844                         goto not_found;
8845                 break;
8846         default:
8847                 goto not_found;
8848         }
8849
8850         /* if port exists, set it to 0 (mark for deletion)
8851          * and make it pending
8852          */
8853         pf->udp_ports[idx].index = 0;
8854         pf->pending_udp_bitmap |= BIT_ULL(idx);
8855         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8856
8857         return;
8858 not_found:
8859         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8860                     ntohs(port));
8861 }
8862
8863 static int i40e_get_phys_port_id(struct net_device *netdev,
8864                                  struct netdev_phys_item_id *ppid)
8865 {
8866         struct i40e_netdev_priv *np = netdev_priv(netdev);
8867         struct i40e_pf *pf = np->vsi->back;
8868         struct i40e_hw *hw = &pf->hw;
8869
8870         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8871                 return -EOPNOTSUPP;
8872
8873         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8874         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8875
8876         return 0;
8877 }
8878
8879 /**
8880  * i40e_ndo_fdb_add - add an entry to the hardware database
8881  * @ndm: the input from the stack
8882  * @tb: pointer to array of nladdr (unused)
8883  * @dev: the net device pointer
8884  * @addr: the MAC address entry being added
8885  * @flags: instructions from stack about fdb operation
8886  */
8887 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8888                             struct net_device *dev,
8889                             const unsigned char *addr, u16 vid,
8890                             u16 flags)
8891 {
8892         struct i40e_netdev_priv *np = netdev_priv(dev);
8893         struct i40e_pf *pf = np->vsi->back;
8894         int err = 0;
8895
8896         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8897                 return -EOPNOTSUPP;
8898
8899         if (vid) {
8900                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8901                 return -EINVAL;
8902         }
8903
8904         /* Hardware does not support aging addresses so if a
8905          * ndm_state is given only allow permanent addresses
8906          */
8907         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8908                 netdev_info(dev, "FDB only supports static addresses\n");
8909                 return -EINVAL;
8910         }
8911
8912         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8913                 err = dev_uc_add_excl(dev, addr);
8914         else if (is_multicast_ether_addr(addr))
8915                 err = dev_mc_add_excl(dev, addr);
8916         else
8917                 err = -EINVAL;
8918
8919         /* Only return duplicate errors if NLM_F_EXCL is set */
8920         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8921                 err = 0;
8922
8923         return err;
8924 }
8925
8926 /**
8927  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8928  * @dev: the netdev being configured
8929  * @nlh: RTNL message
8930  *
8931  * Inserts a new hardware bridge if not already created and
8932  * enables the bridging mode requested (VEB or VEPA). If the
8933  * hardware bridge has already been inserted and the request
8934  * is to change the mode then that requires a PF reset to
8935  * allow rebuild of the components with required hardware
8936  * bridge mode enabled.
8937  **/
8938 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8939                                    struct nlmsghdr *nlh,
8940                                    u16 flags)
8941 {
8942         struct i40e_netdev_priv *np = netdev_priv(dev);
8943         struct i40e_vsi *vsi = np->vsi;
8944         struct i40e_pf *pf = vsi->back;
8945         struct i40e_veb *veb = NULL;
8946         struct nlattr *attr, *br_spec;
8947         int i, rem;
8948
8949         /* Only for PF VSI for now */
8950         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8951                 return -EOPNOTSUPP;
8952
8953         /* Find the HW bridge for PF VSI */
8954         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8955                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8956                         veb = pf->veb[i];
8957         }
8958
8959         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8960
8961         nla_for_each_nested(attr, br_spec, rem) {
8962                 __u16 mode;
8963
8964                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8965                         continue;
8966
8967                 mode = nla_get_u16(attr);
8968                 if ((mode != BRIDGE_MODE_VEPA) &&
8969                     (mode != BRIDGE_MODE_VEB))
8970                         return -EINVAL;
8971
8972                 /* Insert a new HW bridge */
8973                 if (!veb) {
8974                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8975                                              vsi->tc_config.enabled_tc);
8976                         if (veb) {
8977                                 veb->bridge_mode = mode;
8978                                 i40e_config_bridge_mode(veb);
8979                         } else {
8980                                 /* No Bridge HW offload available */
8981                                 return -ENOENT;
8982                         }
8983                         break;
8984                 } else if (mode != veb->bridge_mode) {
8985                         /* Existing HW bridge but different mode needs reset */
8986                         veb->bridge_mode = mode;
8987                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8988                         if (mode == BRIDGE_MODE_VEB)
8989                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8990                         else
8991                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8992                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8993                         break;
8994                 }
8995         }
8996
8997         return 0;
8998 }
8999
9000 /**
9001  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9002  * @skb: skb buff
9003  * @pid: process id
9004  * @seq: RTNL message seq #
9005  * @dev: the netdev being configured
9006  * @filter_mask: unused
9007  * @nlflags: netlink flags passed in
9008  *
9009  * Return the mode in which the hardware bridge is operating in
9010  * i.e VEB or VEPA.
9011  **/
9012 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9013                                    struct net_device *dev,
9014                                    u32 __always_unused filter_mask,
9015                                    int nlflags)
9016 {
9017         struct i40e_netdev_priv *np = netdev_priv(dev);
9018         struct i40e_vsi *vsi = np->vsi;
9019         struct i40e_pf *pf = vsi->back;
9020         struct i40e_veb *veb = NULL;
9021         int i;
9022
9023         /* Only for PF VSI for now */
9024         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9025                 return -EOPNOTSUPP;
9026
9027         /* Find the HW bridge for the PF VSI */
9028         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9029                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9030                         veb = pf->veb[i];
9031         }
9032
9033         if (!veb)
9034                 return 0;
9035
9036         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9037                                        0, 0, nlflags, filter_mask, NULL);
9038 }
9039
9040 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9041  * inner mac plus all inner ethertypes.
9042  */
9043 #define I40E_MAX_TUNNEL_HDR_LEN 128
9044 /**
9045  * i40e_features_check - Validate encapsulated packet conforms to limits
9046  * @skb: skb buff
9047  * @dev: This physical port's netdev
9048  * @features: Offload features that the stack believes apply
9049  **/
9050 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9051                                              struct net_device *dev,
9052                                              netdev_features_t features)
9053 {
9054         if (skb->encapsulation &&
9055             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9056              I40E_MAX_TUNNEL_HDR_LEN))
9057                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9058
9059         return features;
9060 }
9061
9062 static const struct net_device_ops i40e_netdev_ops = {
9063         .ndo_open               = i40e_open,
9064         .ndo_stop               = i40e_close,
9065         .ndo_start_xmit         = i40e_lan_xmit_frame,
9066         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9067         .ndo_set_rx_mode        = i40e_set_rx_mode,
9068         .ndo_validate_addr      = eth_validate_addr,
9069         .ndo_set_mac_address    = i40e_set_mac,
9070         .ndo_change_mtu         = i40e_change_mtu,
9071         .ndo_do_ioctl           = i40e_ioctl,
9072         .ndo_tx_timeout         = i40e_tx_timeout,
9073         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9074         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9075 #ifdef CONFIG_NET_POLL_CONTROLLER
9076         .ndo_poll_controller    = i40e_netpoll,
9077 #endif
9078         .ndo_setup_tc           = __i40e_setup_tc,
9079 #ifdef I40E_FCOE
9080         .ndo_fcoe_enable        = i40e_fcoe_enable,
9081         .ndo_fcoe_disable       = i40e_fcoe_disable,
9082 #endif
9083         .ndo_set_features       = i40e_set_features,
9084         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9085         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9086         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9087         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9088         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9089         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9090         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9091         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9092         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9093         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9094         .ndo_fdb_add            = i40e_ndo_fdb_add,
9095         .ndo_features_check     = i40e_features_check,
9096         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9097         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9098 };
9099
9100 /**
9101  * i40e_config_netdev - Setup the netdev flags
9102  * @vsi: the VSI being configured
9103  *
9104  * Returns 0 on success, negative value on failure
9105  **/
9106 static int i40e_config_netdev(struct i40e_vsi *vsi)
9107 {
9108         struct i40e_pf *pf = vsi->back;
9109         struct i40e_hw *hw = &pf->hw;
9110         struct i40e_netdev_priv *np;
9111         struct net_device *netdev;
9112         u8 mac_addr[ETH_ALEN];
9113         int etherdev_size;
9114
9115         etherdev_size = sizeof(struct i40e_netdev_priv);
9116         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9117         if (!netdev)
9118                 return -ENOMEM;
9119
9120         vsi->netdev = netdev;
9121         np = netdev_priv(netdev);
9122         np->vsi = vsi;
9123
9124         netdev->hw_enc_features |= NETIF_F_SG                   |
9125                                    NETIF_F_IP_CSUM              |
9126                                    NETIF_F_IPV6_CSUM            |
9127                                    NETIF_F_HIGHDMA              |
9128                                    NETIF_F_SOFT_FEATURES        |
9129                                    NETIF_F_TSO                  |
9130                                    NETIF_F_TSO_ECN              |
9131                                    NETIF_F_TSO6                 |
9132                                    NETIF_F_GSO_GRE              |
9133                                    NETIF_F_GSO_GRE_CSUM         |
9134                                    NETIF_F_GSO_IPXIP4           |
9135                                    NETIF_F_GSO_IPXIP6           |
9136                                    NETIF_F_GSO_UDP_TUNNEL       |
9137                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9138                                    NETIF_F_GSO_PARTIAL          |
9139                                    NETIF_F_SCTP_CRC             |
9140                                    NETIF_F_RXHASH               |
9141                                    NETIF_F_RXCSUM               |
9142                                    0;
9143
9144         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9145                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9146
9147         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9148
9149         /* record features VLANs can make use of */
9150         netdev->vlan_features |= netdev->hw_enc_features |
9151                                  NETIF_F_TSO_MANGLEID;
9152
9153         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9154                 netdev->hw_features |= NETIF_F_NTUPLE;
9155
9156         netdev->hw_features |= netdev->hw_enc_features  |
9157                                NETIF_F_HW_VLAN_CTAG_TX  |
9158                                NETIF_F_HW_VLAN_CTAG_RX;
9159
9160         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9161         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9162
9163         if (vsi->type == I40E_VSI_MAIN) {
9164                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9165                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9166                 /* The following steps are necessary to prevent reception
9167                  * of tagged packets - some older NVM configurations load a
9168                  * default a MAC-VLAN filter that accepts any tagged packet
9169                  * which must be replaced by a normal filter.
9170                  */
9171                 i40e_rm_default_mac_filter(vsi, mac_addr);
9172                 spin_lock_bh(&vsi->mac_filter_list_lock);
9173                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9174                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9175         } else {
9176                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9177                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9178                          pf->vsi[pf->lan_vsi]->netdev->name);
9179                 random_ether_addr(mac_addr);
9180
9181                 spin_lock_bh(&vsi->mac_filter_list_lock);
9182                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9183                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9184         }
9185
9186         ether_addr_copy(netdev->dev_addr, mac_addr);
9187         ether_addr_copy(netdev->perm_addr, mac_addr);
9188
9189         netdev->priv_flags |= IFF_UNICAST_FLT;
9190         netdev->priv_flags |= IFF_SUPP_NOFCS;
9191         /* Setup netdev TC information */
9192         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9193
9194         netdev->netdev_ops = &i40e_netdev_ops;
9195         netdev->watchdog_timeo = 5 * HZ;
9196         i40e_set_ethtool_ops(netdev);
9197 #ifdef I40E_FCOE
9198         i40e_fcoe_config_netdev(netdev, vsi);
9199 #endif
9200
9201         return 0;
9202 }
9203
9204 /**
9205  * i40e_vsi_delete - Delete a VSI from the switch
9206  * @vsi: the VSI being removed
9207  *
9208  * Returns 0 on success, negative value on failure
9209  **/
9210 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9211 {
9212         /* remove default VSI is not allowed */
9213         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9214                 return;
9215
9216         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9217 }
9218
9219 /**
9220  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9221  * @vsi: the VSI being queried
9222  *
9223  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9224  **/
9225 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9226 {
9227         struct i40e_veb *veb;
9228         struct i40e_pf *pf = vsi->back;
9229
9230         /* Uplink is not a bridge so default to VEB */
9231         if (vsi->veb_idx == I40E_NO_VEB)
9232                 return 1;
9233
9234         veb = pf->veb[vsi->veb_idx];
9235         if (!veb) {
9236                 dev_info(&pf->pdev->dev,
9237                          "There is no veb associated with the bridge\n");
9238                 return -ENOENT;
9239         }
9240
9241         /* Uplink is a bridge in VEPA mode */
9242         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9243                 return 0;
9244         } else {
9245                 /* Uplink is a bridge in VEB mode */
9246                 return 1;
9247         }
9248
9249         /* VEPA is now default bridge, so return 0 */
9250         return 0;
9251 }
9252
9253 /**
9254  * i40e_add_vsi - Add a VSI to the switch
9255  * @vsi: the VSI being configured
9256  *
9257  * This initializes a VSI context depending on the VSI type to be added and
9258  * passes it down to the add_vsi aq command.
9259  **/
9260 static int i40e_add_vsi(struct i40e_vsi *vsi)
9261 {
9262         int ret = -ENODEV;
9263         i40e_status aq_ret = 0;
9264         struct i40e_pf *pf = vsi->back;
9265         struct i40e_hw *hw = &pf->hw;
9266         struct i40e_vsi_context ctxt;
9267         struct i40e_mac_filter *f, *ftmp;
9268
9269         u8 enabled_tc = 0x1; /* TC0 enabled */
9270         int f_count = 0;
9271
9272         memset(&ctxt, 0, sizeof(ctxt));
9273         switch (vsi->type) {
9274         case I40E_VSI_MAIN:
9275                 /* The PF's main VSI is already setup as part of the
9276                  * device initialization, so we'll not bother with
9277                  * the add_vsi call, but we will retrieve the current
9278                  * VSI context.
9279                  */
9280                 ctxt.seid = pf->main_vsi_seid;
9281                 ctxt.pf_num = pf->hw.pf_id;
9282                 ctxt.vf_num = 0;
9283                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9284                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9285                 if (ret) {
9286                         dev_info(&pf->pdev->dev,
9287                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9288                                  i40e_stat_str(&pf->hw, ret),
9289                                  i40e_aq_str(&pf->hw,
9290                                              pf->hw.aq.asq_last_status));
9291                         return -ENOENT;
9292                 }
9293                 vsi->info = ctxt.info;
9294                 vsi->info.valid_sections = 0;
9295
9296                 vsi->seid = ctxt.seid;
9297                 vsi->id = ctxt.vsi_number;
9298
9299                 enabled_tc = i40e_pf_get_tc_map(pf);
9300
9301                 /* MFP mode setup queue map and update VSI */
9302                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9303                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9304                         memset(&ctxt, 0, sizeof(ctxt));
9305                         ctxt.seid = pf->main_vsi_seid;
9306                         ctxt.pf_num = pf->hw.pf_id;
9307                         ctxt.vf_num = 0;
9308                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9309                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9310                         if (ret) {
9311                                 dev_info(&pf->pdev->dev,
9312                                          "update vsi failed, err %s aq_err %s\n",
9313                                          i40e_stat_str(&pf->hw, ret),
9314                                          i40e_aq_str(&pf->hw,
9315                                                     pf->hw.aq.asq_last_status));
9316                                 ret = -ENOENT;
9317                                 goto err;
9318                         }
9319                         /* update the local VSI info queue map */
9320                         i40e_vsi_update_queue_map(vsi, &ctxt);
9321                         vsi->info.valid_sections = 0;
9322                 } else {
9323                         /* Default/Main VSI is only enabled for TC0
9324                          * reconfigure it to enable all TCs that are
9325                          * available on the port in SFP mode.
9326                          * For MFP case the iSCSI PF would use this
9327                          * flow to enable LAN+iSCSI TC.
9328                          */
9329                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9330                         if (ret) {
9331                                 dev_info(&pf->pdev->dev,
9332                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9333                                          enabled_tc,
9334                                          i40e_stat_str(&pf->hw, ret),
9335                                          i40e_aq_str(&pf->hw,
9336                                                     pf->hw.aq.asq_last_status));
9337                                 ret = -ENOENT;
9338                         }
9339                 }
9340                 break;
9341
9342         case I40E_VSI_FDIR:
9343                 ctxt.pf_num = hw->pf_id;
9344                 ctxt.vf_num = 0;
9345                 ctxt.uplink_seid = vsi->uplink_seid;
9346                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9347                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9348                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9349                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9350                         ctxt.info.valid_sections |=
9351                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9352                         ctxt.info.switch_id =
9353                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9354                 }
9355                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9356                 break;
9357
9358         case I40E_VSI_VMDQ2:
9359                 ctxt.pf_num = hw->pf_id;
9360                 ctxt.vf_num = 0;
9361                 ctxt.uplink_seid = vsi->uplink_seid;
9362                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9363                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9364
9365                 /* This VSI is connected to VEB so the switch_id
9366                  * should be set to zero by default.
9367                  */
9368                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9369                         ctxt.info.valid_sections |=
9370                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9371                         ctxt.info.switch_id =
9372                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9373                 }
9374
9375                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9376                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9377                 break;
9378
9379         case I40E_VSI_SRIOV:
9380                 ctxt.pf_num = hw->pf_id;
9381                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9382                 ctxt.uplink_seid = vsi->uplink_seid;
9383                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9384                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9385
9386                 /* This VSI is connected to VEB so the switch_id
9387                  * should be set to zero by default.
9388                  */
9389                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9390                         ctxt.info.valid_sections |=
9391                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9392                         ctxt.info.switch_id =
9393                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9394                 }
9395
9396                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9397                         ctxt.info.valid_sections |=
9398                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9399                         ctxt.info.queueing_opt_flags |=
9400                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9401                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9402                 }
9403
9404                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9405                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9406                 if (pf->vf[vsi->vf_id].spoofchk) {
9407                         ctxt.info.valid_sections |=
9408                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9409                         ctxt.info.sec_flags |=
9410                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9411                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9412                 }
9413                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9414                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9415                 break;
9416
9417 #ifdef I40E_FCOE
9418         case I40E_VSI_FCOE:
9419                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9420                 if (ret) {
9421                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9422                         return ret;
9423                 }
9424                 break;
9425
9426 #endif /* I40E_FCOE */
9427         case I40E_VSI_IWARP:
9428                 /* send down message to iWARP */
9429                 break;
9430
9431         default:
9432                 return -ENODEV;
9433         }
9434
9435         if (vsi->type != I40E_VSI_MAIN) {
9436                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9437                 if (ret) {
9438                         dev_info(&vsi->back->pdev->dev,
9439                                  "add vsi failed, err %s aq_err %s\n",
9440                                  i40e_stat_str(&pf->hw, ret),
9441                                  i40e_aq_str(&pf->hw,
9442                                              pf->hw.aq.asq_last_status));
9443                         ret = -ENOENT;
9444                         goto err;
9445                 }
9446                 vsi->info = ctxt.info;
9447                 vsi->info.valid_sections = 0;
9448                 vsi->seid = ctxt.seid;
9449                 vsi->id = ctxt.vsi_number;
9450         }
9451         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9452         if (vsi->type != I40E_VSI_FDIR) {
9453                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9454                 if (aq_ret) {
9455                         ret = i40e_aq_rc_to_posix(aq_ret,
9456                                                   hw->aq.asq_last_status);
9457                         dev_info(&pf->pdev->dev,
9458                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9459                                  i40e_stat_str(hw, aq_ret),
9460                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9461                 }
9462         }
9463
9464         vsi->active_filters = 0;
9465         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9466         spin_lock_bh(&vsi->mac_filter_list_lock);
9467         /* If macvlan filters already exist, force them to get loaded */
9468         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9469                 f->state = I40E_FILTER_NEW;
9470                 f_count++;
9471         }
9472         spin_unlock_bh(&vsi->mac_filter_list_lock);
9473
9474         if (f_count) {
9475                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9476                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9477         }
9478
9479         /* Update VSI BW information */
9480         ret = i40e_vsi_get_bw_info(vsi);
9481         if (ret) {
9482                 dev_info(&pf->pdev->dev,
9483                          "couldn't get vsi bw info, err %s aq_err %s\n",
9484                          i40e_stat_str(&pf->hw, ret),
9485                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9486                 /* VSI is already added so not tearing that up */
9487                 ret = 0;
9488         }
9489
9490 err:
9491         return ret;
9492 }
9493
9494 /**
9495  * i40e_vsi_release - Delete a VSI and free its resources
9496  * @vsi: the VSI being removed
9497  *
9498  * Returns 0 on success or < 0 on error
9499  **/
9500 int i40e_vsi_release(struct i40e_vsi *vsi)
9501 {
9502         struct i40e_mac_filter *f, *ftmp;
9503         struct i40e_veb *veb = NULL;
9504         struct i40e_pf *pf;
9505         u16 uplink_seid;
9506         int i, n;
9507
9508         pf = vsi->back;
9509
9510         /* release of a VEB-owner or last VSI is not allowed */
9511         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9512                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9513                          vsi->seid, vsi->uplink_seid);
9514                 return -ENODEV;
9515         }
9516         if (vsi == pf->vsi[pf->lan_vsi] &&
9517             !test_bit(__I40E_DOWN, &pf->state)) {
9518                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9519                 return -ENODEV;
9520         }
9521
9522         uplink_seid = vsi->uplink_seid;
9523         if (vsi->type != I40E_VSI_SRIOV) {
9524                 if (vsi->netdev_registered) {
9525                         vsi->netdev_registered = false;
9526                         if (vsi->netdev) {
9527                                 /* results in a call to i40e_close() */
9528                                 unregister_netdev(vsi->netdev);
9529                         }
9530                 } else {
9531                         i40e_vsi_close(vsi);
9532                 }
9533                 i40e_vsi_disable_irq(vsi);
9534         }
9535
9536         spin_lock_bh(&vsi->mac_filter_list_lock);
9537         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9538                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9539                                 f->is_vf, f->is_netdev);
9540         spin_unlock_bh(&vsi->mac_filter_list_lock);
9541
9542         i40e_sync_vsi_filters(vsi);
9543
9544         i40e_vsi_delete(vsi);
9545         i40e_vsi_free_q_vectors(vsi);
9546         if (vsi->netdev) {
9547                 free_netdev(vsi->netdev);
9548                 vsi->netdev = NULL;
9549         }
9550         i40e_vsi_clear_rings(vsi);
9551         i40e_vsi_clear(vsi);
9552
9553         /* If this was the last thing on the VEB, except for the
9554          * controlling VSI, remove the VEB, which puts the controlling
9555          * VSI onto the next level down in the switch.
9556          *
9557          * Well, okay, there's one more exception here: don't remove
9558          * the orphan VEBs yet.  We'll wait for an explicit remove request
9559          * from up the network stack.
9560          */
9561         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9562                 if (pf->vsi[i] &&
9563                     pf->vsi[i]->uplink_seid == uplink_seid &&
9564                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9565                         n++;      /* count the VSIs */
9566                 }
9567         }
9568         for (i = 0; i < I40E_MAX_VEB; i++) {
9569                 if (!pf->veb[i])
9570                         continue;
9571                 if (pf->veb[i]->uplink_seid == uplink_seid)
9572                         n++;     /* count the VEBs */
9573                 if (pf->veb[i]->seid == uplink_seid)
9574                         veb = pf->veb[i];
9575         }
9576         if (n == 0 && veb && veb->uplink_seid != 0)
9577                 i40e_veb_release(veb);
9578
9579         return 0;
9580 }
9581
9582 /**
9583  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9584  * @vsi: ptr to the VSI
9585  *
9586  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9587  * corresponding SW VSI structure and initializes num_queue_pairs for the
9588  * newly allocated VSI.
9589  *
9590  * Returns 0 on success or negative on failure
9591  **/
9592 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9593 {
9594         int ret = -ENOENT;
9595         struct i40e_pf *pf = vsi->back;
9596
9597         if (vsi->q_vectors[0]) {
9598                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9599                          vsi->seid);
9600                 return -EEXIST;
9601         }
9602
9603         if (vsi->base_vector) {
9604                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9605                          vsi->seid, vsi->base_vector);
9606                 return -EEXIST;
9607         }
9608
9609         ret = i40e_vsi_alloc_q_vectors(vsi);
9610         if (ret) {
9611                 dev_info(&pf->pdev->dev,
9612                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9613                          vsi->num_q_vectors, vsi->seid, ret);
9614                 vsi->num_q_vectors = 0;
9615                 goto vector_setup_out;
9616         }
9617
9618         /* In Legacy mode, we do not have to get any other vector since we
9619          * piggyback on the misc/ICR0 for queue interrupts.
9620         */
9621         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9622                 return ret;
9623         if (vsi->num_q_vectors)
9624                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9625                                                  vsi->num_q_vectors, vsi->idx);
9626         if (vsi->base_vector < 0) {
9627                 dev_info(&pf->pdev->dev,
9628                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9629                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9630                 i40e_vsi_free_q_vectors(vsi);
9631                 ret = -ENOENT;
9632                 goto vector_setup_out;
9633         }
9634
9635 vector_setup_out:
9636         return ret;
9637 }
9638
9639 /**
9640  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9641  * @vsi: pointer to the vsi.
9642  *
9643  * This re-allocates a vsi's queue resources.
9644  *
9645  * Returns pointer to the successfully allocated and configured VSI sw struct
9646  * on success, otherwise returns NULL on failure.
9647  **/
9648 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9649 {
9650         struct i40e_pf *pf;
9651         u8 enabled_tc;
9652         int ret;
9653
9654         if (!vsi)
9655                 return NULL;
9656
9657         pf = vsi->back;
9658
9659         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9660         i40e_vsi_clear_rings(vsi);
9661
9662         i40e_vsi_free_arrays(vsi, false);
9663         i40e_set_num_rings_in_vsi(vsi);
9664         ret = i40e_vsi_alloc_arrays(vsi, false);
9665         if (ret)
9666                 goto err_vsi;
9667
9668         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9669         if (ret < 0) {
9670                 dev_info(&pf->pdev->dev,
9671                          "failed to get tracking for %d queues for VSI %d err %d\n",
9672                          vsi->alloc_queue_pairs, vsi->seid, ret);
9673                 goto err_vsi;
9674         }
9675         vsi->base_queue = ret;
9676
9677         /* Update the FW view of the VSI. Force a reset of TC and queue
9678          * layout configurations.
9679          */
9680         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9681         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9682         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9683         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9684         if (vsi->type == I40E_VSI_MAIN)
9685                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9686
9687         /* assign it some queues */
9688         ret = i40e_alloc_rings(vsi);
9689         if (ret)
9690                 goto err_rings;
9691
9692         /* map all of the rings to the q_vectors */
9693         i40e_vsi_map_rings_to_vectors(vsi);
9694         return vsi;
9695
9696 err_rings:
9697         i40e_vsi_free_q_vectors(vsi);
9698         if (vsi->netdev_registered) {
9699                 vsi->netdev_registered = false;
9700                 unregister_netdev(vsi->netdev);
9701                 free_netdev(vsi->netdev);
9702                 vsi->netdev = NULL;
9703         }
9704         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9705 err_vsi:
9706         i40e_vsi_clear(vsi);
9707         return NULL;
9708 }
9709
9710 /**
9711  * i40e_vsi_setup - Set up a VSI by a given type
9712  * @pf: board private structure
9713  * @type: VSI type
9714  * @uplink_seid: the switch element to link to
9715  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9716  *
9717  * This allocates the sw VSI structure and its queue resources, then add a VSI
9718  * to the identified VEB.
9719  *
9720  * Returns pointer to the successfully allocated and configure VSI sw struct on
9721  * success, otherwise returns NULL on failure.
9722  **/
9723 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9724                                 u16 uplink_seid, u32 param1)
9725 {
9726         struct i40e_vsi *vsi = NULL;
9727         struct i40e_veb *veb = NULL;
9728         int ret, i;
9729         int v_idx;
9730
9731         /* The requested uplink_seid must be either
9732          *     - the PF's port seid
9733          *              no VEB is needed because this is the PF
9734          *              or this is a Flow Director special case VSI
9735          *     - seid of an existing VEB
9736          *     - seid of a VSI that owns an existing VEB
9737          *     - seid of a VSI that doesn't own a VEB
9738          *              a new VEB is created and the VSI becomes the owner
9739          *     - seid of the PF VSI, which is what creates the first VEB
9740          *              this is a special case of the previous
9741          *
9742          * Find which uplink_seid we were given and create a new VEB if needed
9743          */
9744         for (i = 0; i < I40E_MAX_VEB; i++) {
9745                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9746                         veb = pf->veb[i];
9747                         break;
9748                 }
9749         }
9750
9751         if (!veb && uplink_seid != pf->mac_seid) {
9752
9753                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9754                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9755                                 vsi = pf->vsi[i];
9756                                 break;
9757                         }
9758                 }
9759                 if (!vsi) {
9760                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9761                                  uplink_seid);
9762                         return NULL;
9763                 }
9764
9765                 if (vsi->uplink_seid == pf->mac_seid)
9766                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9767                                              vsi->tc_config.enabled_tc);
9768                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9769                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9770                                              vsi->tc_config.enabled_tc);
9771                 if (veb) {
9772                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9773                                 dev_info(&vsi->back->pdev->dev,
9774                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9775                                 return NULL;
9776                         }
9777                         /* We come up by default in VEPA mode if SRIOV is not
9778                          * already enabled, in which case we can't force VEPA
9779                          * mode.
9780                          */
9781                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9782                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9783                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9784                         }
9785                         i40e_config_bridge_mode(veb);
9786                 }
9787                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9788                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9789                                 veb = pf->veb[i];
9790                 }
9791                 if (!veb) {
9792                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9793                         return NULL;
9794                 }
9795
9796                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9797                 uplink_seid = veb->seid;
9798         }
9799
9800         /* get vsi sw struct */
9801         v_idx = i40e_vsi_mem_alloc(pf, type);
9802         if (v_idx < 0)
9803                 goto err_alloc;
9804         vsi = pf->vsi[v_idx];
9805         if (!vsi)
9806                 goto err_alloc;
9807         vsi->type = type;
9808         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9809
9810         if (type == I40E_VSI_MAIN)
9811                 pf->lan_vsi = v_idx;
9812         else if (type == I40E_VSI_SRIOV)
9813                 vsi->vf_id = param1;
9814         /* assign it some queues */
9815         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9816                                 vsi->idx);
9817         if (ret < 0) {
9818                 dev_info(&pf->pdev->dev,
9819                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9820                          vsi->alloc_queue_pairs, vsi->seid, ret);
9821                 goto err_vsi;
9822         }
9823         vsi->base_queue = ret;
9824
9825         /* get a VSI from the hardware */
9826         vsi->uplink_seid = uplink_seid;
9827         ret = i40e_add_vsi(vsi);
9828         if (ret)
9829                 goto err_vsi;
9830
9831         switch (vsi->type) {
9832         /* setup the netdev if needed */
9833         case I40E_VSI_MAIN:
9834                 /* Apply relevant filters if a platform-specific mac
9835                  * address was selected.
9836                  */
9837                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9838                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9839                         if (ret) {
9840                                 dev_warn(&pf->pdev->dev,
9841                                          "could not set up macaddr; err %d\n",
9842                                          ret);
9843                         }
9844                 }
9845         case I40E_VSI_VMDQ2:
9846         case I40E_VSI_FCOE:
9847                 ret = i40e_config_netdev(vsi);
9848                 if (ret)
9849                         goto err_netdev;
9850                 ret = register_netdev(vsi->netdev);
9851                 if (ret)
9852                         goto err_netdev;
9853                 vsi->netdev_registered = true;
9854                 netif_carrier_off(vsi->netdev);
9855 #ifdef CONFIG_I40E_DCB
9856                 /* Setup DCB netlink interface */
9857                 i40e_dcbnl_setup(vsi);
9858 #endif /* CONFIG_I40E_DCB */
9859                 /* fall through */
9860
9861         case I40E_VSI_FDIR:
9862                 /* set up vectors and rings if needed */
9863                 ret = i40e_vsi_setup_vectors(vsi);
9864                 if (ret)
9865                         goto err_msix;
9866
9867                 ret = i40e_alloc_rings(vsi);
9868                 if (ret)
9869                         goto err_rings;
9870
9871                 /* map all of the rings to the q_vectors */
9872                 i40e_vsi_map_rings_to_vectors(vsi);
9873
9874                 i40e_vsi_reset_stats(vsi);
9875                 break;
9876
9877         default:
9878                 /* no netdev or rings for the other VSI types */
9879                 break;
9880         }
9881
9882         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9883             (vsi->type == I40E_VSI_VMDQ2)) {
9884                 ret = i40e_vsi_config_rss(vsi);
9885         }
9886         return vsi;
9887
9888 err_rings:
9889         i40e_vsi_free_q_vectors(vsi);
9890 err_msix:
9891         if (vsi->netdev_registered) {
9892                 vsi->netdev_registered = false;
9893                 unregister_netdev(vsi->netdev);
9894                 free_netdev(vsi->netdev);
9895                 vsi->netdev = NULL;
9896         }
9897 err_netdev:
9898         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9899 err_vsi:
9900         i40e_vsi_clear(vsi);
9901 err_alloc:
9902         return NULL;
9903 }
9904
9905 /**
9906  * i40e_veb_get_bw_info - Query VEB BW information
9907  * @veb: the veb to query
9908  *
9909  * Query the Tx scheduler BW configuration data for given VEB
9910  **/
9911 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9912 {
9913         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9914         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9915         struct i40e_pf *pf = veb->pf;
9916         struct i40e_hw *hw = &pf->hw;
9917         u32 tc_bw_max;
9918         int ret = 0;
9919         int i;
9920
9921         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9922                                                   &bw_data, NULL);
9923         if (ret) {
9924                 dev_info(&pf->pdev->dev,
9925                          "query veb bw config failed, err %s aq_err %s\n",
9926                          i40e_stat_str(&pf->hw, ret),
9927                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9928                 goto out;
9929         }
9930
9931         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9932                                                    &ets_data, NULL);
9933         if (ret) {
9934                 dev_info(&pf->pdev->dev,
9935                          "query veb bw ets config failed, err %s aq_err %s\n",
9936                          i40e_stat_str(&pf->hw, ret),
9937                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9938                 goto out;
9939         }
9940
9941         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9942         veb->bw_max_quanta = ets_data.tc_bw_max;
9943         veb->is_abs_credits = bw_data.absolute_credits_enable;
9944         veb->enabled_tc = ets_data.tc_valid_bits;
9945         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9946                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9947         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9948                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9949                 veb->bw_tc_limit_credits[i] =
9950                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9951                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9952         }
9953
9954 out:
9955         return ret;
9956 }
9957
9958 /**
9959  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9960  * @pf: board private structure
9961  *
9962  * On error: returns error code (negative)
9963  * On success: returns vsi index in PF (positive)
9964  **/
9965 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9966 {
9967         int ret = -ENOENT;
9968         struct i40e_veb *veb;
9969         int i;
9970
9971         /* Need to protect the allocation of switch elements at the PF level */
9972         mutex_lock(&pf->switch_mutex);
9973
9974         /* VEB list may be fragmented if VEB creation/destruction has
9975          * been happening.  We can afford to do a quick scan to look
9976          * for any free slots in the list.
9977          *
9978          * find next empty veb slot, looping back around if necessary
9979          */
9980         i = 0;
9981         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9982                 i++;
9983         if (i >= I40E_MAX_VEB) {
9984                 ret = -ENOMEM;
9985                 goto err_alloc_veb;  /* out of VEB slots! */
9986         }
9987
9988         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9989         if (!veb) {
9990                 ret = -ENOMEM;
9991                 goto err_alloc_veb;
9992         }
9993         veb->pf = pf;
9994         veb->idx = i;
9995         veb->enabled_tc = 1;
9996
9997         pf->veb[i] = veb;
9998         ret = i;
9999 err_alloc_veb:
10000         mutex_unlock(&pf->switch_mutex);
10001         return ret;
10002 }
10003
10004 /**
10005  * i40e_switch_branch_release - Delete a branch of the switch tree
10006  * @branch: where to start deleting
10007  *
10008  * This uses recursion to find the tips of the branch to be
10009  * removed, deleting until we get back to and can delete this VEB.
10010  **/
10011 static void i40e_switch_branch_release(struct i40e_veb *branch)
10012 {
10013         struct i40e_pf *pf = branch->pf;
10014         u16 branch_seid = branch->seid;
10015         u16 veb_idx = branch->idx;
10016         int i;
10017
10018         /* release any VEBs on this VEB - RECURSION */
10019         for (i = 0; i < I40E_MAX_VEB; i++) {
10020                 if (!pf->veb[i])
10021                         continue;
10022                 if (pf->veb[i]->uplink_seid == branch->seid)
10023                         i40e_switch_branch_release(pf->veb[i]);
10024         }
10025
10026         /* Release the VSIs on this VEB, but not the owner VSI.
10027          *
10028          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10029          *       the VEB itself, so don't use (*branch) after this loop.
10030          */
10031         for (i = 0; i < pf->num_alloc_vsi; i++) {
10032                 if (!pf->vsi[i])
10033                         continue;
10034                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10035                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10036                         i40e_vsi_release(pf->vsi[i]);
10037                 }
10038         }
10039
10040         /* There's one corner case where the VEB might not have been
10041          * removed, so double check it here and remove it if needed.
10042          * This case happens if the veb was created from the debugfs
10043          * commands and no VSIs were added to it.
10044          */
10045         if (pf->veb[veb_idx])
10046                 i40e_veb_release(pf->veb[veb_idx]);
10047 }
10048
10049 /**
10050  * i40e_veb_clear - remove veb struct
10051  * @veb: the veb to remove
10052  **/
10053 static void i40e_veb_clear(struct i40e_veb *veb)
10054 {
10055         if (!veb)
10056                 return;
10057
10058         if (veb->pf) {
10059                 struct i40e_pf *pf = veb->pf;
10060
10061                 mutex_lock(&pf->switch_mutex);
10062                 if (pf->veb[veb->idx] == veb)
10063                         pf->veb[veb->idx] = NULL;
10064                 mutex_unlock(&pf->switch_mutex);
10065         }
10066
10067         kfree(veb);
10068 }
10069
10070 /**
10071  * i40e_veb_release - Delete a VEB and free its resources
10072  * @veb: the VEB being removed
10073  **/
10074 void i40e_veb_release(struct i40e_veb *veb)
10075 {
10076         struct i40e_vsi *vsi = NULL;
10077         struct i40e_pf *pf;
10078         int i, n = 0;
10079
10080         pf = veb->pf;
10081
10082         /* find the remaining VSI and check for extras */
10083         for (i = 0; i < pf->num_alloc_vsi; i++) {
10084                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10085                         n++;
10086                         vsi = pf->vsi[i];
10087                 }
10088         }
10089         if (n != 1) {
10090                 dev_info(&pf->pdev->dev,
10091                          "can't remove VEB %d with %d VSIs left\n",
10092                          veb->seid, n);
10093                 return;
10094         }
10095
10096         /* move the remaining VSI to uplink veb */
10097         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10098         if (veb->uplink_seid) {
10099                 vsi->uplink_seid = veb->uplink_seid;
10100                 if (veb->uplink_seid == pf->mac_seid)
10101                         vsi->veb_idx = I40E_NO_VEB;
10102                 else
10103                         vsi->veb_idx = veb->veb_idx;
10104         } else {
10105                 /* floating VEB */
10106                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10107                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10108         }
10109
10110         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10111         i40e_veb_clear(veb);
10112 }
10113
10114 /**
10115  * i40e_add_veb - create the VEB in the switch
10116  * @veb: the VEB to be instantiated
10117  * @vsi: the controlling VSI
10118  **/
10119 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10120 {
10121         struct i40e_pf *pf = veb->pf;
10122         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10123         int ret;
10124
10125         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10126                               veb->enabled_tc, false,
10127                               &veb->seid, enable_stats, NULL);
10128
10129         /* get a VEB from the hardware */
10130         if (ret) {
10131                 dev_info(&pf->pdev->dev,
10132                          "couldn't add VEB, err %s aq_err %s\n",
10133                          i40e_stat_str(&pf->hw, ret),
10134                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10135                 return -EPERM;
10136         }
10137
10138         /* get statistics counter */
10139         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10140                                          &veb->stats_idx, NULL, NULL, NULL);
10141         if (ret) {
10142                 dev_info(&pf->pdev->dev,
10143                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10144                          i40e_stat_str(&pf->hw, ret),
10145                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10146                 return -EPERM;
10147         }
10148         ret = i40e_veb_get_bw_info(veb);
10149         if (ret) {
10150                 dev_info(&pf->pdev->dev,
10151                          "couldn't get VEB bw info, err %s aq_err %s\n",
10152                          i40e_stat_str(&pf->hw, ret),
10153                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10154                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10155                 return -ENOENT;
10156         }
10157
10158         vsi->uplink_seid = veb->seid;
10159         vsi->veb_idx = veb->idx;
10160         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10161
10162         return 0;
10163 }
10164
10165 /**
10166  * i40e_veb_setup - Set up a VEB
10167  * @pf: board private structure
10168  * @flags: VEB setup flags
10169  * @uplink_seid: the switch element to link to
10170  * @vsi_seid: the initial VSI seid
10171  * @enabled_tc: Enabled TC bit-map
10172  *
10173  * This allocates the sw VEB structure and links it into the switch
10174  * It is possible and legal for this to be a duplicate of an already
10175  * existing VEB.  It is also possible for both uplink and vsi seids
10176  * to be zero, in order to create a floating VEB.
10177  *
10178  * Returns pointer to the successfully allocated VEB sw struct on
10179  * success, otherwise returns NULL on failure.
10180  **/
10181 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10182                                 u16 uplink_seid, u16 vsi_seid,
10183                                 u8 enabled_tc)
10184 {
10185         struct i40e_veb *veb, *uplink_veb = NULL;
10186         int vsi_idx, veb_idx;
10187         int ret;
10188
10189         /* if one seid is 0, the other must be 0 to create a floating relay */
10190         if ((uplink_seid == 0 || vsi_seid == 0) &&
10191             (uplink_seid + vsi_seid != 0)) {
10192                 dev_info(&pf->pdev->dev,
10193                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10194                          uplink_seid, vsi_seid);
10195                 return NULL;
10196         }
10197
10198         /* make sure there is such a vsi and uplink */
10199         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10200                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10201                         break;
10202         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10203                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10204                          vsi_seid);
10205                 return NULL;
10206         }
10207
10208         if (uplink_seid && uplink_seid != pf->mac_seid) {
10209                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10210                         if (pf->veb[veb_idx] &&
10211                             pf->veb[veb_idx]->seid == uplink_seid) {
10212                                 uplink_veb = pf->veb[veb_idx];
10213                                 break;
10214                         }
10215                 }
10216                 if (!uplink_veb) {
10217                         dev_info(&pf->pdev->dev,
10218                                  "uplink seid %d not found\n", uplink_seid);
10219                         return NULL;
10220                 }
10221         }
10222
10223         /* get veb sw struct */
10224         veb_idx = i40e_veb_mem_alloc(pf);
10225         if (veb_idx < 0)
10226                 goto err_alloc;
10227         veb = pf->veb[veb_idx];
10228         veb->flags = flags;
10229         veb->uplink_seid = uplink_seid;
10230         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10231         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10232
10233         /* create the VEB in the switch */
10234         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10235         if (ret)
10236                 goto err_veb;
10237         if (vsi_idx == pf->lan_vsi)
10238                 pf->lan_veb = veb->idx;
10239
10240         return veb;
10241
10242 err_veb:
10243         i40e_veb_clear(veb);
10244 err_alloc:
10245         return NULL;
10246 }
10247
10248 /**
10249  * i40e_setup_pf_switch_element - set PF vars based on switch type
10250  * @pf: board private structure
10251  * @ele: element we are building info from
10252  * @num_reported: total number of elements
10253  * @printconfig: should we print the contents
10254  *
10255  * helper function to assist in extracting a few useful SEID values.
10256  **/
10257 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10258                                 struct i40e_aqc_switch_config_element_resp *ele,
10259                                 u16 num_reported, bool printconfig)
10260 {
10261         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10262         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10263         u8 element_type = ele->element_type;
10264         u16 seid = le16_to_cpu(ele->seid);
10265
10266         if (printconfig)
10267                 dev_info(&pf->pdev->dev,
10268                          "type=%d seid=%d uplink=%d downlink=%d\n",
10269                          element_type, seid, uplink_seid, downlink_seid);
10270
10271         switch (element_type) {
10272         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10273                 pf->mac_seid = seid;
10274                 break;
10275         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10276                 /* Main VEB? */
10277                 if (uplink_seid != pf->mac_seid)
10278                         break;
10279                 if (pf->lan_veb == I40E_NO_VEB) {
10280                         int v;
10281
10282                         /* find existing or else empty VEB */
10283                         for (v = 0; v < I40E_MAX_VEB; v++) {
10284                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10285                                         pf->lan_veb = v;
10286                                         break;
10287                                 }
10288                         }
10289                         if (pf->lan_veb == I40E_NO_VEB) {
10290                                 v = i40e_veb_mem_alloc(pf);
10291                                 if (v < 0)
10292                                         break;
10293                                 pf->lan_veb = v;
10294                         }
10295                 }
10296
10297                 pf->veb[pf->lan_veb]->seid = seid;
10298                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10299                 pf->veb[pf->lan_veb]->pf = pf;
10300                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10301                 break;
10302         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10303                 if (num_reported != 1)
10304                         break;
10305                 /* This is immediately after a reset so we can assume this is
10306                  * the PF's VSI
10307                  */
10308                 pf->mac_seid = uplink_seid;
10309                 pf->pf_seid = downlink_seid;
10310                 pf->main_vsi_seid = seid;
10311                 if (printconfig)
10312                         dev_info(&pf->pdev->dev,
10313                                  "pf_seid=%d main_vsi_seid=%d\n",
10314                                  pf->pf_seid, pf->main_vsi_seid);
10315                 break;
10316         case I40E_SWITCH_ELEMENT_TYPE_PF:
10317         case I40E_SWITCH_ELEMENT_TYPE_VF:
10318         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10319         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10320         case I40E_SWITCH_ELEMENT_TYPE_PE:
10321         case I40E_SWITCH_ELEMENT_TYPE_PA:
10322                 /* ignore these for now */
10323                 break;
10324         default:
10325                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10326                          element_type, seid);
10327                 break;
10328         }
10329 }
10330
10331 /**
10332  * i40e_fetch_switch_configuration - Get switch config from firmware
10333  * @pf: board private structure
10334  * @printconfig: should we print the contents
10335  *
10336  * Get the current switch configuration from the device and
10337  * extract a few useful SEID values.
10338  **/
10339 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10340 {
10341         struct i40e_aqc_get_switch_config_resp *sw_config;
10342         u16 next_seid = 0;
10343         int ret = 0;
10344         u8 *aq_buf;
10345         int i;
10346
10347         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10348         if (!aq_buf)
10349                 return -ENOMEM;
10350
10351         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10352         do {
10353                 u16 num_reported, num_total;
10354
10355                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10356                                                 I40E_AQ_LARGE_BUF,
10357                                                 &next_seid, NULL);
10358                 if (ret) {
10359                         dev_info(&pf->pdev->dev,
10360                                  "get switch config failed err %s aq_err %s\n",
10361                                  i40e_stat_str(&pf->hw, ret),
10362                                  i40e_aq_str(&pf->hw,
10363                                              pf->hw.aq.asq_last_status));
10364                         kfree(aq_buf);
10365                         return -ENOENT;
10366                 }
10367
10368                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10369                 num_total = le16_to_cpu(sw_config->header.num_total);
10370
10371                 if (printconfig)
10372                         dev_info(&pf->pdev->dev,
10373                                  "header: %d reported %d total\n",
10374                                  num_reported, num_total);
10375
10376                 for (i = 0; i < num_reported; i++) {
10377                         struct i40e_aqc_switch_config_element_resp *ele =
10378                                 &sw_config->element[i];
10379
10380                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10381                                                      printconfig);
10382                 }
10383         } while (next_seid != 0);
10384
10385         kfree(aq_buf);
10386         return ret;
10387 }
10388
10389 /**
10390  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10391  * @pf: board private structure
10392  * @reinit: if the Main VSI needs to re-initialized.
10393  *
10394  * Returns 0 on success, negative value on failure
10395  **/
10396 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10397 {
10398         u16 flags = 0;
10399         int ret;
10400
10401         /* find out what's out there already */
10402         ret = i40e_fetch_switch_configuration(pf, false);
10403         if (ret) {
10404                 dev_info(&pf->pdev->dev,
10405                          "couldn't fetch switch config, err %s aq_err %s\n",
10406                          i40e_stat_str(&pf->hw, ret),
10407                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10408                 return ret;
10409         }
10410         i40e_pf_reset_stats(pf);
10411
10412         /* set the switch config bit for the whole device to
10413          * support limited promisc or true promisc
10414          * when user requests promisc. The default is limited
10415          * promisc.
10416         */
10417
10418         if ((pf->hw.pf_id == 0) &&
10419             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10420                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10421
10422         if (pf->hw.pf_id == 0) {
10423                 u16 valid_flags;
10424
10425                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10426                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10427                                                 NULL);
10428                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10429                         dev_info(&pf->pdev->dev,
10430                                  "couldn't set switch config bits, err %s aq_err %s\n",
10431                                  i40e_stat_str(&pf->hw, ret),
10432                                  i40e_aq_str(&pf->hw,
10433                                              pf->hw.aq.asq_last_status));
10434                         /* not a fatal problem, just keep going */
10435                 }
10436         }
10437
10438         /* first time setup */
10439         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10440                 struct i40e_vsi *vsi = NULL;
10441                 u16 uplink_seid;
10442
10443                 /* Set up the PF VSI associated with the PF's main VSI
10444                  * that is already in the HW switch
10445                  */
10446                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10447                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10448                 else
10449                         uplink_seid = pf->mac_seid;
10450                 if (pf->lan_vsi == I40E_NO_VSI)
10451                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10452                 else if (reinit)
10453                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10454                 if (!vsi) {
10455                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10456                         i40e_fdir_teardown(pf);
10457                         return -EAGAIN;
10458                 }
10459         } else {
10460                 /* force a reset of TC and queue layout configurations */
10461                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10462
10463                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10464                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10465                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10466         }
10467         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10468
10469         i40e_fdir_sb_setup(pf);
10470
10471         /* Setup static PF queue filter control settings */
10472         ret = i40e_setup_pf_filter_control(pf);
10473         if (ret) {
10474                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10475                          ret);
10476                 /* Failure here should not stop continuing other steps */
10477         }
10478
10479         /* enable RSS in the HW, even for only one queue, as the stack can use
10480          * the hash
10481          */
10482         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10483                 i40e_pf_config_rss(pf);
10484
10485         /* fill in link information and enable LSE reporting */
10486         i40e_update_link_info(&pf->hw);
10487         i40e_link_event(pf);
10488
10489         /* Initialize user-specific link properties */
10490         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10491                                   I40E_AQ_AN_COMPLETED) ? true : false);
10492
10493         i40e_ptp_init(pf);
10494
10495         return ret;
10496 }
10497
10498 /**
10499  * i40e_determine_queue_usage - Work out queue distribution
10500  * @pf: board private structure
10501  **/
10502 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10503 {
10504         int queues_left;
10505
10506         pf->num_lan_qps = 0;
10507 #ifdef I40E_FCOE
10508         pf->num_fcoe_qps = 0;
10509 #endif
10510
10511         /* Find the max queues to be put into basic use.  We'll always be
10512          * using TC0, whether or not DCB is running, and TC0 will get the
10513          * big RSS set.
10514          */
10515         queues_left = pf->hw.func_caps.num_tx_qp;
10516
10517         if ((queues_left == 1) ||
10518             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10519                 /* one qp for PF, no queues for anything else */
10520                 queues_left = 0;
10521                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10522
10523                 /* make sure all the fancies are disabled */
10524                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10525                                I40E_FLAG_IWARP_ENABLED  |
10526 #ifdef I40E_FCOE
10527                                I40E_FLAG_FCOE_ENABLED   |
10528 #endif
10529                                I40E_FLAG_FD_SB_ENABLED  |
10530                                I40E_FLAG_FD_ATR_ENABLED |
10531                                I40E_FLAG_DCB_CAPABLE    |
10532                                I40E_FLAG_DCB_ENABLED    |
10533                                I40E_FLAG_SRIOV_ENABLED  |
10534                                I40E_FLAG_VMDQ_ENABLED);
10535         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10536                                   I40E_FLAG_FD_SB_ENABLED |
10537                                   I40E_FLAG_FD_ATR_ENABLED |
10538                                   I40E_FLAG_DCB_CAPABLE))) {
10539                 /* one qp for PF */
10540                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10541                 queues_left -= pf->num_lan_qps;
10542
10543                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10544                                I40E_FLAG_IWARP_ENABLED  |
10545 #ifdef I40E_FCOE
10546                                I40E_FLAG_FCOE_ENABLED   |
10547 #endif
10548                                I40E_FLAG_FD_SB_ENABLED  |
10549                                I40E_FLAG_FD_ATR_ENABLED |
10550                                I40E_FLAG_DCB_ENABLED    |
10551                                I40E_FLAG_VMDQ_ENABLED);
10552         } else {
10553                 /* Not enough queues for all TCs */
10554                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10555                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10556                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10557                                         I40E_FLAG_DCB_ENABLED);
10558                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10559                 }
10560                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10561                                         num_online_cpus());
10562                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10563                                         pf->hw.func_caps.num_tx_qp);
10564
10565                 queues_left -= pf->num_lan_qps;
10566         }
10567
10568 #ifdef I40E_FCOE
10569         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10570                 if (I40E_DEFAULT_FCOE <= queues_left) {
10571                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10572                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10573                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10574                 } else {
10575                         pf->num_fcoe_qps = 0;
10576                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10577                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10578                 }
10579
10580                 queues_left -= pf->num_fcoe_qps;
10581         }
10582
10583 #endif
10584         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10585                 if (queues_left > 1) {
10586                         queues_left -= 1; /* save 1 queue for FD */
10587                 } else {
10588                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10589                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10590                 }
10591         }
10592
10593         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10594             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10595                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10596                                         (queues_left / pf->num_vf_qps));
10597                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10598         }
10599
10600         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10601             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10602                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10603                                           (queues_left / pf->num_vmdq_qps));
10604                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10605         }
10606
10607         pf->queues_left = queues_left;
10608         dev_dbg(&pf->pdev->dev,
10609                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10610                 pf->hw.func_caps.num_tx_qp,
10611                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10612                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10613                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10614                 queues_left);
10615 #ifdef I40E_FCOE
10616         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10617 #endif
10618 }
10619
10620 /**
10621  * i40e_setup_pf_filter_control - Setup PF static filter control
10622  * @pf: PF to be setup
10623  *
10624  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10625  * settings. If PE/FCoE are enabled then it will also set the per PF
10626  * based filter sizes required for them. It also enables Flow director,
10627  * ethertype and macvlan type filter settings for the pf.
10628  *
10629  * Returns 0 on success, negative on failure
10630  **/
10631 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10632 {
10633         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10634
10635         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10636
10637         /* Flow Director is enabled */
10638         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10639                 settings->enable_fdir = true;
10640
10641         /* Ethtype and MACVLAN filters enabled for PF */
10642         settings->enable_ethtype = true;
10643         settings->enable_macvlan = true;
10644
10645         if (i40e_set_filter_control(&pf->hw, settings))
10646                 return -ENOENT;
10647
10648         return 0;
10649 }
10650
10651 #define INFO_STRING_LEN 255
10652 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10653 static void i40e_print_features(struct i40e_pf *pf)
10654 {
10655         struct i40e_hw *hw = &pf->hw;
10656         char *buf;
10657         int i;
10658
10659         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10660         if (!buf)
10661                 return;
10662
10663         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10664 #ifdef CONFIG_PCI_IOV
10665         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10666 #endif
10667         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10668                       pf->hw.func_caps.num_vsis,
10669                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10670         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10671                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10672         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10673                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10674         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10675                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10676                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10677         }
10678         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10679                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10680         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10681         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10682         if (pf->flags & I40E_FLAG_PTP)
10683                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10684 #ifdef I40E_FCOE
10685         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10686                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10687 #endif
10688         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10689                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10690         else
10691                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10692
10693         dev_info(&pf->pdev->dev, "%s\n", buf);
10694         kfree(buf);
10695         WARN_ON(i > INFO_STRING_LEN);
10696 }
10697
10698 /**
10699  * i40e_get_platform_mac_addr - get platform-specific MAC address
10700  *
10701  * @pdev: PCI device information struct
10702  * @pf: board private structure
10703  *
10704  * Look up the MAC address in Open Firmware  on systems that support it,
10705  * and use IDPROM on SPARC if no OF address is found. On return, the
10706  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10707  * has been selected.
10708  **/
10709 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10710 {
10711         pf->flags &= ~I40E_FLAG_PF_MAC;
10712         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10713                 pf->flags |= I40E_FLAG_PF_MAC;
10714 }
10715
10716 /**
10717  * i40e_probe - Device initialization routine
10718  * @pdev: PCI device information struct
10719  * @ent: entry in i40e_pci_tbl
10720  *
10721  * i40e_probe initializes a PF identified by a pci_dev structure.
10722  * The OS initialization, configuring of the PF private structure,
10723  * and a hardware reset occur.
10724  *
10725  * Returns 0 on success, negative on failure
10726  **/
10727 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10728 {
10729         struct i40e_aq_get_phy_abilities_resp abilities;
10730         struct i40e_pf *pf;
10731         struct i40e_hw *hw;
10732         static u16 pfs_found;
10733         u16 wol_nvm_bits;
10734         u16 link_status;
10735         int err;
10736         u32 val;
10737         u32 i;
10738         u8 set_fc_aq_fail;
10739
10740         err = pci_enable_device_mem(pdev);
10741         if (err)
10742                 return err;
10743
10744         /* set up for high or low dma */
10745         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10746         if (err) {
10747                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10748                 if (err) {
10749                         dev_err(&pdev->dev,
10750                                 "DMA configuration failed: 0x%x\n", err);
10751                         goto err_dma;
10752                 }
10753         }
10754
10755         /* set up pci connections */
10756         err = pci_request_mem_regions(pdev, i40e_driver_name);
10757         if (err) {
10758                 dev_info(&pdev->dev,
10759                          "pci_request_selected_regions failed %d\n", err);
10760                 goto err_pci_reg;
10761         }
10762
10763         pci_enable_pcie_error_reporting(pdev);
10764         pci_set_master(pdev);
10765
10766         /* Now that we have a PCI connection, we need to do the
10767          * low level device setup.  This is primarily setting up
10768          * the Admin Queue structures and then querying for the
10769          * device's current profile information.
10770          */
10771         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10772         if (!pf) {
10773                 err = -ENOMEM;
10774                 goto err_pf_alloc;
10775         }
10776         pf->next_vsi = 0;
10777         pf->pdev = pdev;
10778         set_bit(__I40E_DOWN, &pf->state);
10779
10780         hw = &pf->hw;
10781         hw->back = pf;
10782
10783         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10784                                 I40E_MAX_CSR_SPACE);
10785
10786         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10787         if (!hw->hw_addr) {
10788                 err = -EIO;
10789                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10790                          (unsigned int)pci_resource_start(pdev, 0),
10791                          pf->ioremap_len, err);
10792                 goto err_ioremap;
10793         }
10794         hw->vendor_id = pdev->vendor;
10795         hw->device_id = pdev->device;
10796         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10797         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10798         hw->subsystem_device_id = pdev->subsystem_device;
10799         hw->bus.device = PCI_SLOT(pdev->devfn);
10800         hw->bus.func = PCI_FUNC(pdev->devfn);
10801         pf->instance = pfs_found;
10802
10803         /* set up the locks for the AQ, do this only once in probe
10804          * and destroy them only once in remove
10805          */
10806         mutex_init(&hw->aq.asq_mutex);
10807         mutex_init(&hw->aq.arq_mutex);
10808
10809         if (debug != -1) {
10810                 pf->msg_enable = pf->hw.debug_mask;
10811                 pf->msg_enable = debug;
10812         }
10813
10814         /* do a special CORER for clearing PXE mode once at init */
10815         if (hw->revision_id == 0 &&
10816             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10817                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10818                 i40e_flush(hw);
10819                 msleep(200);
10820                 pf->corer_count++;
10821
10822                 i40e_clear_pxe_mode(hw);
10823         }
10824
10825         /* Reset here to make sure all is clean and to define PF 'n' */
10826         i40e_clear_hw(hw);
10827         err = i40e_pf_reset(hw);
10828         if (err) {
10829                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10830                 goto err_pf_reset;
10831         }
10832         pf->pfr_count++;
10833
10834         hw->aq.num_arq_entries = I40E_AQ_LEN;
10835         hw->aq.num_asq_entries = I40E_AQ_LEN;
10836         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10837         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10838         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10839
10840         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10841                  "%s-%s:misc",
10842                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10843
10844         err = i40e_init_shared_code(hw);
10845         if (err) {
10846                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10847                          err);
10848                 goto err_pf_reset;
10849         }
10850
10851         /* set up a default setting for link flow control */
10852         pf->hw.fc.requested_mode = I40E_FC_NONE;
10853
10854         err = i40e_init_adminq(hw);
10855         if (err) {
10856                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10857                         dev_info(&pdev->dev,
10858                                  "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");
10859                 else
10860                         dev_info(&pdev->dev,
10861                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10862
10863                 goto err_pf_reset;
10864         }
10865
10866         /* provide nvm, fw, api versions */
10867         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10868                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10869                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10870                  i40e_nvm_version_str(hw));
10871
10872         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10873             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10874                 dev_info(&pdev->dev,
10875                          "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");
10876         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10877                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10878                 dev_info(&pdev->dev,
10879                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10880
10881         i40e_verify_eeprom(pf);
10882
10883         /* Rev 0 hardware was never productized */
10884         if (hw->revision_id < 1)
10885                 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");
10886
10887         i40e_clear_pxe_mode(hw);
10888         err = i40e_get_capabilities(pf);
10889         if (err)
10890                 goto err_adminq_setup;
10891
10892         err = i40e_sw_init(pf);
10893         if (err) {
10894                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10895                 goto err_sw_init;
10896         }
10897
10898         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10899                                 hw->func_caps.num_rx_qp,
10900                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10901         if (err) {
10902                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10903                 goto err_init_lan_hmc;
10904         }
10905
10906         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10907         if (err) {
10908                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10909                 err = -ENOENT;
10910                 goto err_configure_lan_hmc;
10911         }
10912
10913         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10914          * Ignore error return codes because if it was already disabled via
10915          * hardware settings this will fail
10916          */
10917         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10918                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10919                 i40e_aq_stop_lldp(hw, true, NULL);
10920         }
10921
10922         i40e_get_mac_addr(hw, hw->mac.addr);
10923         /* allow a platform config to override the HW addr */
10924         i40e_get_platform_mac_addr(pdev, pf);
10925         if (!is_valid_ether_addr(hw->mac.addr)) {
10926                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10927                 err = -EIO;
10928                 goto err_mac_addr;
10929         }
10930         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10931         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10932         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10933         if (is_valid_ether_addr(hw->mac.port_addr))
10934                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10935 #ifdef I40E_FCOE
10936         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10937         if (err)
10938                 dev_info(&pdev->dev,
10939                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10940         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10941                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10942                          hw->mac.san_addr);
10943                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10944         }
10945         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10946 #endif /* I40E_FCOE */
10947
10948         pci_set_drvdata(pdev, pf);
10949         pci_save_state(pdev);
10950 #ifdef CONFIG_I40E_DCB
10951         err = i40e_init_pf_dcb(pf);
10952         if (err) {
10953                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10954                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED);
10955                 /* Continue without DCB enabled */
10956         }
10957 #endif /* CONFIG_I40E_DCB */
10958
10959         /* set up periodic task facility */
10960         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10961         pf->service_timer_period = HZ;
10962
10963         INIT_WORK(&pf->service_task, i40e_service_task);
10964         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10965         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10966
10967         /* NVM bit on means WoL disabled for the port */
10968         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10969         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10970                 pf->wol_en = false;
10971         else
10972                 pf->wol_en = true;
10973         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10974
10975         /* set up the main switch operations */
10976         i40e_determine_queue_usage(pf);
10977         err = i40e_init_interrupt_scheme(pf);
10978         if (err)
10979                 goto err_switch_setup;
10980
10981         /* The number of VSIs reported by the FW is the minimum guaranteed
10982          * to us; HW supports far more and we share the remaining pool with
10983          * the other PFs. We allocate space for more than the guarantee with
10984          * the understanding that we might not get them all later.
10985          */
10986         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10987                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10988         else
10989                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10990
10991         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10992         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10993                           GFP_KERNEL);
10994         if (!pf->vsi) {
10995                 err = -ENOMEM;
10996                 goto err_switch_setup;
10997         }
10998
10999 #ifdef CONFIG_PCI_IOV
11000         /* prep for VF support */
11001         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11002             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11003             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11004                 if (pci_num_vf(pdev))
11005                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11006         }
11007 #endif
11008         err = i40e_setup_pf_switch(pf, false);
11009         if (err) {
11010                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11011                 goto err_vsis;
11012         }
11013
11014         /* Make sure flow control is set according to current settings */
11015         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11016         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11017                 dev_dbg(&pf->pdev->dev,
11018                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11019                         i40e_stat_str(hw, err),
11020                         i40e_aq_str(hw, hw->aq.asq_last_status));
11021         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11022                 dev_dbg(&pf->pdev->dev,
11023                         "Set fc with err %s aq_err %s on set_phy_config\n",
11024                         i40e_stat_str(hw, err),
11025                         i40e_aq_str(hw, hw->aq.asq_last_status));
11026         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11027                 dev_dbg(&pf->pdev->dev,
11028                         "Set fc with err %s aq_err %s on get_link_info\n",
11029                         i40e_stat_str(hw, err),
11030                         i40e_aq_str(hw, hw->aq.asq_last_status));
11031
11032         /* if FDIR VSI was set up, start it now */
11033         for (i = 0; i < pf->num_alloc_vsi; i++) {
11034                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11035                         i40e_vsi_open(pf->vsi[i]);
11036                         break;
11037                 }
11038         }
11039
11040         /* The driver only wants link up/down and module qualification
11041          * reports from firmware.  Note the negative logic.
11042          */
11043         err = i40e_aq_set_phy_int_mask(&pf->hw,
11044                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11045                                          I40E_AQ_EVENT_MEDIA_NA |
11046                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11047         if (err)
11048                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11049                          i40e_stat_str(&pf->hw, err),
11050                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11051
11052         /* Reconfigure hardware for allowing smaller MSS in the case
11053          * of TSO, so that we avoid the MDD being fired and causing
11054          * a reset in the case of small MSS+TSO.
11055          */
11056         val = rd32(hw, I40E_REG_MSS);
11057         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11058                 val &= ~I40E_REG_MSS_MIN_MASK;
11059                 val |= I40E_64BYTE_MSS;
11060                 wr32(hw, I40E_REG_MSS, val);
11061         }
11062
11063         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11064                 msleep(75);
11065                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11066                 if (err)
11067                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11068                                  i40e_stat_str(&pf->hw, err),
11069                                  i40e_aq_str(&pf->hw,
11070                                              pf->hw.aq.asq_last_status));
11071         }
11072         /* The main driver is (mostly) up and happy. We need to set this state
11073          * before setting up the misc vector or we get a race and the vector
11074          * ends up disabled forever.
11075          */
11076         clear_bit(__I40E_DOWN, &pf->state);
11077
11078         /* In case of MSIX we are going to setup the misc vector right here
11079          * to handle admin queue events etc. In case of legacy and MSI
11080          * the misc functionality and queue processing is combined in
11081          * the same vector and that gets setup at open.
11082          */
11083         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11084                 err = i40e_setup_misc_vector(pf);
11085                 if (err) {
11086                         dev_info(&pdev->dev,
11087                                  "setup of misc vector failed: %d\n", err);
11088                         goto err_vsis;
11089                 }
11090         }
11091
11092 #ifdef CONFIG_PCI_IOV
11093         /* prep for VF support */
11094         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11095             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11096             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11097                 /* disable link interrupts for VFs */
11098                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11099                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11100                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11101                 i40e_flush(hw);
11102
11103                 if (pci_num_vf(pdev)) {
11104                         dev_info(&pdev->dev,
11105                                  "Active VFs found, allocating resources.\n");
11106                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11107                         if (err)
11108                                 dev_info(&pdev->dev,
11109                                          "Error %d allocating resources for existing VFs\n",
11110                                          err);
11111                 }
11112         }
11113 #endif /* CONFIG_PCI_IOV */
11114
11115         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11116                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11117                                                       pf->num_iwarp_msix,
11118                                                       I40E_IWARP_IRQ_PILE_ID);
11119                 if (pf->iwarp_base_vector < 0) {
11120                         dev_info(&pdev->dev,
11121                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11122                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11123                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11124                 }
11125         }
11126
11127         i40e_dbg_pf_init(pf);
11128
11129         /* tell the firmware that we're starting */
11130         i40e_send_version(pf);
11131
11132         /* since everything's happy, start the service_task timer */
11133         mod_timer(&pf->service_timer,
11134                   round_jiffies(jiffies + pf->service_timer_period));
11135
11136         /* add this PF to client device list and launch a client service task */
11137         err = i40e_lan_add_device(pf);
11138         if (err)
11139                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11140                          err);
11141
11142 #ifdef I40E_FCOE
11143         /* create FCoE interface */
11144         i40e_fcoe_vsi_setup(pf);
11145
11146 #endif
11147 #define PCI_SPEED_SIZE 8
11148 #define PCI_WIDTH_SIZE 8
11149         /* Devices on the IOSF bus do not have this information
11150          * and will report PCI Gen 1 x 1 by default so don't bother
11151          * checking them.
11152          */
11153         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11154                 char speed[PCI_SPEED_SIZE] = "Unknown";
11155                 char width[PCI_WIDTH_SIZE] = "Unknown";
11156
11157                 /* Get the negotiated link width and speed from PCI config
11158                  * space
11159                  */
11160                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11161                                           &link_status);
11162
11163                 i40e_set_pci_config_data(hw, link_status);
11164
11165                 switch (hw->bus.speed) {
11166                 case i40e_bus_speed_8000:
11167                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11168                 case i40e_bus_speed_5000:
11169                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11170                 case i40e_bus_speed_2500:
11171                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11172                 default:
11173                         break;
11174                 }
11175                 switch (hw->bus.width) {
11176                 case i40e_bus_width_pcie_x8:
11177                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11178                 case i40e_bus_width_pcie_x4:
11179                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11180                 case i40e_bus_width_pcie_x2:
11181                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11182                 case i40e_bus_width_pcie_x1:
11183                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11184                 default:
11185                         break;
11186                 }
11187
11188                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11189                          speed, width);
11190
11191                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11192                     hw->bus.speed < i40e_bus_speed_8000) {
11193                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11194                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11195                 }
11196         }
11197
11198         /* get the requested speeds from the fw */
11199         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11200         if (err)
11201                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11202                         i40e_stat_str(&pf->hw, err),
11203                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11204         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11205
11206         /* get the supported phy types from the fw */
11207         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11208         if (err)
11209                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11210                         i40e_stat_str(&pf->hw, err),
11211                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11212         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11213
11214         /* Add a filter to drop all Flow control frames from any VSI from being
11215          * transmitted. By doing so we stop a malicious VF from sending out
11216          * PAUSE or PFC frames and potentially controlling traffic for other
11217          * PF/VF VSIs.
11218          * The FW can still send Flow control frames if enabled.
11219          */
11220         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11221                                                        pf->main_vsi_seid);
11222
11223         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11224             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11225                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11226
11227         /* print a string summarizing features */
11228         i40e_print_features(pf);
11229
11230         return 0;
11231
11232         /* Unwind what we've done if something failed in the setup */
11233 err_vsis:
11234         set_bit(__I40E_DOWN, &pf->state);
11235         i40e_clear_interrupt_scheme(pf);
11236         kfree(pf->vsi);
11237 err_switch_setup:
11238         i40e_reset_interrupt_capability(pf);
11239         del_timer_sync(&pf->service_timer);
11240 err_mac_addr:
11241 err_configure_lan_hmc:
11242         (void)i40e_shutdown_lan_hmc(hw);
11243 err_init_lan_hmc:
11244         kfree(pf->qp_pile);
11245 err_sw_init:
11246 err_adminq_setup:
11247 err_pf_reset:
11248         iounmap(hw->hw_addr);
11249 err_ioremap:
11250         kfree(pf);
11251 err_pf_alloc:
11252         pci_disable_pcie_error_reporting(pdev);
11253         pci_release_mem_regions(pdev);
11254 err_pci_reg:
11255 err_dma:
11256         pci_disable_device(pdev);
11257         return err;
11258 }
11259
11260 /**
11261  * i40e_remove - Device removal routine
11262  * @pdev: PCI device information struct
11263  *
11264  * i40e_remove is called by the PCI subsystem to alert the driver
11265  * that is should release a PCI device.  This could be caused by a
11266  * Hot-Plug event, or because the driver is going to be removed from
11267  * memory.
11268  **/
11269 static void i40e_remove(struct pci_dev *pdev)
11270 {
11271         struct i40e_pf *pf = pci_get_drvdata(pdev);
11272         struct i40e_hw *hw = &pf->hw;
11273         i40e_status ret_code;
11274         int i;
11275
11276         i40e_dbg_pf_exit(pf);
11277
11278         i40e_ptp_stop(pf);
11279
11280         /* Disable RSS in hw */
11281         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11282         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11283
11284         /* no more scheduling of any task */
11285         set_bit(__I40E_SUSPENDED, &pf->state);
11286         set_bit(__I40E_DOWN, &pf->state);
11287         if (pf->service_timer.data)
11288                 del_timer_sync(&pf->service_timer);
11289         if (pf->service_task.func)
11290                 cancel_work_sync(&pf->service_task);
11291
11292         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11293                 i40e_free_vfs(pf);
11294                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11295         }
11296
11297         i40e_fdir_teardown(pf);
11298
11299         /* If there is a switch structure or any orphans, remove them.
11300          * This will leave only the PF's VSI remaining.
11301          */
11302         for (i = 0; i < I40E_MAX_VEB; i++) {
11303                 if (!pf->veb[i])
11304                         continue;
11305
11306                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11307                     pf->veb[i]->uplink_seid == 0)
11308                         i40e_switch_branch_release(pf->veb[i]);
11309         }
11310
11311         /* Now we can shutdown the PF's VSI, just before we kill
11312          * adminq and hmc.
11313          */
11314         if (pf->vsi[pf->lan_vsi])
11315                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11316
11317         /* remove attached clients */
11318         ret_code = i40e_lan_del_device(pf);
11319         if (ret_code) {
11320                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11321                          ret_code);
11322         }
11323
11324         /* shutdown and destroy the HMC */
11325         if (hw->hmc.hmc_obj) {
11326                 ret_code = i40e_shutdown_lan_hmc(hw);
11327                 if (ret_code)
11328                         dev_warn(&pdev->dev,
11329                                  "Failed to destroy the HMC resources: %d\n",
11330                                  ret_code);
11331         }
11332
11333         /* shutdown the adminq */
11334         i40e_shutdown_adminq(hw);
11335
11336         /* destroy the locks only once, here */
11337         mutex_destroy(&hw->aq.arq_mutex);
11338         mutex_destroy(&hw->aq.asq_mutex);
11339
11340         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11341         i40e_clear_interrupt_scheme(pf);
11342         for (i = 0; i < pf->num_alloc_vsi; i++) {
11343                 if (pf->vsi[i]) {
11344                         i40e_vsi_clear_rings(pf->vsi[i]);
11345                         i40e_vsi_clear(pf->vsi[i]);
11346                         pf->vsi[i] = NULL;
11347                 }
11348         }
11349
11350         for (i = 0; i < I40E_MAX_VEB; i++) {
11351                 kfree(pf->veb[i]);
11352                 pf->veb[i] = NULL;
11353         }
11354
11355         kfree(pf->qp_pile);
11356         kfree(pf->vsi);
11357
11358         iounmap(hw->hw_addr);
11359         kfree(pf);
11360         pci_release_mem_regions(pdev);
11361
11362         pci_disable_pcie_error_reporting(pdev);
11363         pci_disable_device(pdev);
11364 }
11365
11366 /**
11367  * i40e_pci_error_detected - warning that something funky happened in PCI land
11368  * @pdev: PCI device information struct
11369  *
11370  * Called to warn that something happened and the error handling steps
11371  * are in progress.  Allows the driver to quiesce things, be ready for
11372  * remediation.
11373  **/
11374 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11375                                                 enum pci_channel_state error)
11376 {
11377         struct i40e_pf *pf = pci_get_drvdata(pdev);
11378
11379         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11380
11381         if (!pf) {
11382                 dev_info(&pdev->dev,
11383                          "Cannot recover - error happened during device probe\n");
11384                 return PCI_ERS_RESULT_DISCONNECT;
11385         }
11386
11387         /* shutdown all operations */
11388         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11389                 rtnl_lock();
11390                 i40e_prep_for_reset(pf);
11391                 rtnl_unlock();
11392         }
11393
11394         /* Request a slot reset */
11395         return PCI_ERS_RESULT_NEED_RESET;
11396 }
11397
11398 /**
11399  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11400  * @pdev: PCI device information struct
11401  *
11402  * Called to find if the driver can work with the device now that
11403  * the pci slot has been reset.  If a basic connection seems good
11404  * (registers are readable and have sane content) then return a
11405  * happy little PCI_ERS_RESULT_xxx.
11406  **/
11407 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11408 {
11409         struct i40e_pf *pf = pci_get_drvdata(pdev);
11410         pci_ers_result_t result;
11411         int err;
11412         u32 reg;
11413
11414         dev_dbg(&pdev->dev, "%s\n", __func__);
11415         if (pci_enable_device_mem(pdev)) {
11416                 dev_info(&pdev->dev,
11417                          "Cannot re-enable PCI device after reset.\n");
11418                 result = PCI_ERS_RESULT_DISCONNECT;
11419         } else {
11420                 pci_set_master(pdev);
11421                 pci_restore_state(pdev);
11422                 pci_save_state(pdev);
11423                 pci_wake_from_d3(pdev, false);
11424
11425                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11426                 if (reg == 0)
11427                         result = PCI_ERS_RESULT_RECOVERED;
11428                 else
11429                         result = PCI_ERS_RESULT_DISCONNECT;
11430         }
11431
11432         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11433         if (err) {
11434                 dev_info(&pdev->dev,
11435                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11436                          err);
11437                 /* non-fatal, continue */
11438         }
11439
11440         return result;
11441 }
11442
11443 /**
11444  * i40e_pci_error_resume - restart operations after PCI error recovery
11445  * @pdev: PCI device information struct
11446  *
11447  * Called to allow the driver to bring things back up after PCI error
11448  * and/or reset recovery has finished.
11449  **/
11450 static void i40e_pci_error_resume(struct pci_dev *pdev)
11451 {
11452         struct i40e_pf *pf = pci_get_drvdata(pdev);
11453
11454         dev_dbg(&pdev->dev, "%s\n", __func__);
11455         if (test_bit(__I40E_SUSPENDED, &pf->state))
11456                 return;
11457
11458         rtnl_lock();
11459         i40e_handle_reset_warning(pf);
11460         rtnl_unlock();
11461 }
11462
11463 /**
11464  * i40e_shutdown - PCI callback for shutting down
11465  * @pdev: PCI device information struct
11466  **/
11467 static void i40e_shutdown(struct pci_dev *pdev)
11468 {
11469         struct i40e_pf *pf = pci_get_drvdata(pdev);
11470         struct i40e_hw *hw = &pf->hw;
11471
11472         set_bit(__I40E_SUSPENDED, &pf->state);
11473         set_bit(__I40E_DOWN, &pf->state);
11474         rtnl_lock();
11475         i40e_prep_for_reset(pf);
11476         rtnl_unlock();
11477
11478         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11479         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11480
11481         del_timer_sync(&pf->service_timer);
11482         cancel_work_sync(&pf->service_task);
11483         i40e_fdir_teardown(pf);
11484
11485         rtnl_lock();
11486         i40e_prep_for_reset(pf);
11487         rtnl_unlock();
11488
11489         wr32(hw, I40E_PFPM_APM,
11490              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11491         wr32(hw, I40E_PFPM_WUFC,
11492              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11493
11494         i40e_clear_interrupt_scheme(pf);
11495
11496         if (system_state == SYSTEM_POWER_OFF) {
11497                 pci_wake_from_d3(pdev, pf->wol_en);
11498                 pci_set_power_state(pdev, PCI_D3hot);
11499         }
11500 }
11501
11502 #ifdef CONFIG_PM
11503 /**
11504  * i40e_suspend - PCI callback for moving to D3
11505  * @pdev: PCI device information struct
11506  **/
11507 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11508 {
11509         struct i40e_pf *pf = pci_get_drvdata(pdev);
11510         struct i40e_hw *hw = &pf->hw;
11511         int retval = 0;
11512
11513         set_bit(__I40E_SUSPENDED, &pf->state);
11514         set_bit(__I40E_DOWN, &pf->state);
11515
11516         rtnl_lock();
11517         i40e_prep_for_reset(pf);
11518         rtnl_unlock();
11519
11520         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11521         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11522
11523         i40e_stop_misc_vector(pf);
11524
11525         retval = pci_save_state(pdev);
11526         if (retval)
11527                 return retval;
11528
11529         pci_wake_from_d3(pdev, pf->wol_en);
11530         pci_set_power_state(pdev, PCI_D3hot);
11531
11532         return retval;
11533 }
11534
11535 /**
11536  * i40e_resume - PCI callback for waking up from D3
11537  * @pdev: PCI device information struct
11538  **/
11539 static int i40e_resume(struct pci_dev *pdev)
11540 {
11541         struct i40e_pf *pf = pci_get_drvdata(pdev);
11542         u32 err;
11543
11544         pci_set_power_state(pdev, PCI_D0);
11545         pci_restore_state(pdev);
11546         /* pci_restore_state() clears dev->state_saves, so
11547          * call pci_save_state() again to restore it.
11548          */
11549         pci_save_state(pdev);
11550
11551         err = pci_enable_device_mem(pdev);
11552         if (err) {
11553                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11554                 return err;
11555         }
11556         pci_set_master(pdev);
11557
11558         /* no wakeup events while running */
11559         pci_wake_from_d3(pdev, false);
11560
11561         /* handling the reset will rebuild the device state */
11562         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11563                 clear_bit(__I40E_DOWN, &pf->state);
11564                 rtnl_lock();
11565                 i40e_reset_and_rebuild(pf, false);
11566                 rtnl_unlock();
11567         }
11568
11569         return 0;
11570 }
11571
11572 #endif
11573 static const struct pci_error_handlers i40e_err_handler = {
11574         .error_detected = i40e_pci_error_detected,
11575         .slot_reset = i40e_pci_error_slot_reset,
11576         .resume = i40e_pci_error_resume,
11577 };
11578
11579 static struct pci_driver i40e_driver = {
11580         .name     = i40e_driver_name,
11581         .id_table = i40e_pci_tbl,
11582         .probe    = i40e_probe,
11583         .remove   = i40e_remove,
11584 #ifdef CONFIG_PM
11585         .suspend  = i40e_suspend,
11586         .resume   = i40e_resume,
11587 #endif
11588         .shutdown = i40e_shutdown,
11589         .err_handler = &i40e_err_handler,
11590         .sriov_configure = i40e_pci_sriov_configure,
11591 };
11592
11593 /**
11594  * i40e_init_module - Driver registration routine
11595  *
11596  * i40e_init_module is the first routine called when the driver is
11597  * loaded. All it does is register with the PCI subsystem.
11598  **/
11599 static int __init i40e_init_module(void)
11600 {
11601         pr_info("%s: %s - version %s\n", i40e_driver_name,
11602                 i40e_driver_string, i40e_driver_version_str);
11603         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11604
11605         /* we will see if single thread per module is enough for now,
11606          * it can't be any worse than using the system workqueue which
11607          * was already single threaded
11608          */
11609         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11610                                   i40e_driver_name);
11611         if (!i40e_wq) {
11612                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11613                 return -ENOMEM;
11614         }
11615
11616         i40e_dbg_init();
11617         return pci_register_driver(&i40e_driver);
11618 }
11619 module_init(i40e_init_module);
11620
11621 /**
11622  * i40e_exit_module - Driver exit cleanup routine
11623  *
11624  * i40e_exit_module is called just before the driver is removed
11625  * from memory.
11626  **/
11627 static void __exit i40e_exit_module(void)
11628 {
11629         pci_unregister_driver(&i40e_driver);
11630         destroy_workqueue(i40e_wq);
11631         i40e_dbg_exit();
11632 }
11633 module_exit(i40e_exit_module);