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 5
  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_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  61                               u16 rss_table_size, u16 rss_size);
  62 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  63 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  64
  65 /* i40e_pci_tbl - PCI Device ID Table
  66  *
  67  * Last entry must be all 0s
  68  *
  69  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  70  *   Class, Class Mask, private data (not used) }
  71  */
  72 static const struct pci_device_id i40e_pci_tbl[] = {
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_I_X722), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  92         /* required last entry */
  93         {0, }
  94 };
  95 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  96
  97 #define I40E_MAX_VF_COUNT 128
  98 static int debug = -1;
  99 module_param(debug, int, 0);
 100 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 101
 102 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 103 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 104 MODULE_LICENSE("GPL");
 105 MODULE_VERSION(DRV_VERSION);
 106
 107 static struct workqueue_struct *i40e_wq;
 108
 109 /**
 110  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 111  * @hw:   pointer to the HW structure
 112  * @mem:  ptr to mem struct to fill out
 113  * @size: size of memory requested
 114  * @alignment: what to align the allocation to
 115  **/
 116 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 117                             u64 size, u32 alignment)
 118 {
 119         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 120
 121         mem->size = ALIGN(size, alignment);
 122         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 123                                       &mem->pa, GFP_KERNEL);
 124         if (!mem->va)
 125                 return -ENOMEM;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_free_dma_mem_d - OS specific memory free for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to free
 134  **/
 135 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 136 {
 137         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 138
 139         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 140         mem->va = NULL;
 141         mem->pa = 0;
 142         mem->size = 0;
 143
 144         return 0;
 145 }
 146
 147 /**
 148  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 149  * @hw:   pointer to the HW structure
 150  * @mem:  ptr to mem struct to fill out
 151  * @size: size of memory requested
 152  **/
 153 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 154                              u32 size)
 155 {
 156         mem->size = size;
 157         mem->va = kzalloc(size, GFP_KERNEL);
 158
 159         if (!mem->va)
 160                 return -ENOMEM;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_free_virt_mem_d - OS specific memory free for shared code
 167  * @hw:   pointer to the HW structure
 168  * @mem:  ptr to mem struct to free
 169  **/
 170 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 171 {
 172         /* it's ok to kfree a NULL pointer */
 173         kfree(mem->va);
 174         mem->va = NULL;
 175         mem->size = 0;
 176
 177         return 0;
 178 }
 179
 180 /**
 181  * i40e_get_lump - find a lump of free generic resource
 182  * @pf: board private structure
 183  * @pile: the pile of resource to search
 184  * @needed: the number of items needed
 185  * @id: an owner id to stick on the items assigned
 186  *
 187  * Returns the base item index of the lump, or negative for error
 188  *
 189  * The search_hint trick and lack of advanced fit-finding only work
 190  * because we're highly likely to have all the same size lump requests.
 191  * Linear search time and any fragmentation should be minimal.
 192  **/
 193 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 194                          u16 needed, u16 id)
 195 {
 196         int ret = -ENOMEM;
 197         int i, j;
 198
 199         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 200                 dev_info(&pf->pdev->dev,
 201                          "param err: pile=%p needed=%d id=0x%04x\n",
 202                          pile, needed, id);
 203                 return -EINVAL;
 204         }
 205
 206         /* start the linear search with an imperfect hint */
 207         i = pile->search_hint;
 208         while (i < pile->num_entries) {
 209                 /* skip already allocated entries */
 210                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 211                         i++;
 212                         continue;
 213                 }
 214
 215                 /* do we have enough in this lump? */
 216                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 217                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 218                                 break;
 219                 }
 220
 221                 if (j == needed) {
 222                         /* there was enough, so assign it to the requestor */
 223                         for (j = 0; j < needed; j++)
 224                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 225                         ret = i;
 226                         pile->search_hint = i + j;
 227                         break;
 228                 }
 229
 230                 /* not enough, so skip over it and continue looking */
 231                 i += j;
 232         }
 233
 234         return ret;
 235 }
 236
 237 /**
 238  * i40e_put_lump - return a lump of generic resource
 239  * @pile: the pile of resource to search
 240  * @index: the base item index
 241  * @id: the owner id of the items assigned
 242  *
 243  * Returns the count of items in the lump
 244  **/
 245 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 246 {
 247         int valid_id = (id | I40E_PILE_VALID_BIT);
 248         int count = 0;
 249         int i;
 250
 251         if (!pile || index >= pile->num_entries)
 252                 return -EINVAL;
 253
 254         for (i = index;
 255              i < pile->num_entries && pile->list[i] == valid_id;
 256              i++) {
 257                 pile->list[i] = 0;
 258                 count++;
 259         }
 260
 261         if (count && index < pile->search_hint)
 262                 pile->search_hint = index;
 263
 264         return count;
 265 }
 266
 267 /**
 268  * i40e_find_vsi_from_id - searches for the vsi with the given id
 269  * @pf - the pf structure to search for the vsi
 270  * @id - id of the vsi it is searching for
 271  **/
 272 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 273 {
 274         int i;
 275
 276         for (i = 0; i < pf->num_alloc_vsi; i++)
 277                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 278                         return pf->vsi[i];
 279
 280         return NULL;
 281 }
 282
 283 /**
 284  * i40e_service_event_schedule - Schedule the service task to wake up
 285  * @pf: board private structure
 286  *
 287  * If not already scheduled, this puts the task into the work queue
 288  **/
 289 void i40e_service_event_schedule(struct i40e_pf *pf)
 290 {
 291         if (!test_bit(__I40E_DOWN, &pf->state) &&
 292             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 293             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 294                 queue_work(i40e_wq, &pf->service_task);
 295 }
 296
 297 /**
 298  * i40e_tx_timeout - Respond to a Tx Hang
 299  * @netdev: network interface device structure
 300  *
 301  * If any port has noticed a Tx timeout, it is likely that the whole
 302  * device is munged, not just the one netdev port, so go for the full
 303  * reset.
 304  **/
 305 #ifdef I40E_FCOE
 306 void i40e_tx_timeout(struct net_device *netdev)
 307 #else
 308 static void i40e_tx_timeout(struct net_device *netdev)
 309 #endif
 310 {
 311         struct i40e_netdev_priv *np = netdev_priv(netdev);
 312         struct i40e_vsi *vsi = np->vsi;
 313         struct i40e_pf *pf = vsi->back;
 314         struct i40e_ring *tx_ring = NULL;
 315         unsigned int i, hung_queue = 0;
 316         u32 head, val;
 317
 318         pf->tx_timeout_count++;
 319
 320         /* find the stopped queue the same way the stack does */
 321         for (i = 0; i < netdev->num_tx_queues; i++) {
 322                 struct netdev_queue *q;
 323                 unsigned long trans_start;
 324
 325                 q = netdev_get_tx_queue(netdev, i);
 326                 trans_start = q->trans_start;
 327                 if (netif_xmit_stopped(q) &&
 328                     time_after(jiffies,
 329                                (trans_start + netdev->watchdog_timeo))) {
 330                         hung_queue = i;
 331                         break;
 332                 }
 333         }
 334
 335         if (i == netdev->num_tx_queues) {
 336                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 337         } else {
 338                 /* now that we have an index, find the tx_ring struct */
 339                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 340                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 341                                 if (hung_queue ==
 342                                     vsi->tx_rings[i]->queue_index) {
 343                                         tx_ring = vsi->tx_rings[i];
 344                                         break;
 345                                 }
 346                         }
 347                 }
 348         }
 349
 350         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 351                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 352         else if (time_before(jiffies,
 353                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 354                 return;   /* don't do any new action before the next timeout */
 355
 356         if (tx_ring) {
 357                 head = i40e_get_head(tx_ring);
 358                 /* Read interrupt register */
 359                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 360                         val = rd32(&pf->hw,
 361                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 362                                                 tx_ring->vsi->base_vector - 1));
 363                 else
 364                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 365
 366                 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",
 367                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 368                             head, tx_ring->next_to_use,
 369                             readl(tx_ring->tail), val);
 370         }
 371
 372         pf->tx_timeout_last_recovery = jiffies;
 373         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 374                     pf->tx_timeout_recovery_level, hung_queue);
 375
 376         switch (pf->tx_timeout_recovery_level) {
 377         case 1:
 378                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 2:
 381                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 382                 break;
 383         case 3:
 384                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 385                 break;
 386         default:
 387                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 388                 break;
 389         }
 390
 391         i40e_service_event_schedule(pf);
 392         pf->tx_timeout_recovery_level++;
 393 }
 394
 395 /**
 396  * i40e_get_vsi_stats_struct - Get System Network Statistics
 397  * @vsi: the VSI we care about
 398  *
 399  * Returns the address of the device statistics structure.
 400  * The statistics are actually updated from the service task.
 401  **/
 402 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 403 {
 404         return &vsi->net_stats;
 405 }
 406
 407 /**
 408  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 409  * @netdev: network interface device structure
 410  *
 411  * Returns the address of the device statistics structure.
 412  * The statistics are actually updated from the service task.
 413  **/
 414 #ifdef I40E_FCOE
 415 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 416                                              struct net_device *netdev,
 417                                              struct rtnl_link_stats64 *stats)
 418 #else
 419 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 420                                              struct net_device *netdev,
 421                                              struct rtnl_link_stats64 *stats)
 422 #endif
 423 {
 424         struct i40e_netdev_priv *np = netdev_priv(netdev);
 425         struct i40e_ring *tx_ring, *rx_ring;
 426         struct i40e_vsi *vsi = np->vsi;
 427         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 428         int i;
 429
 430         if (test_bit(__I40E_DOWN, &vsi->state))
 431                 return stats;
 432
 433         if (!vsi->tx_rings)
 434                 return stats;
 435
 436         rcu_read_lock();
 437         for (i = 0; i < vsi->num_queue_pairs; i++) {
 438                 u64 bytes, packets;
 439                 unsigned int start;
 440
 441                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 442                 if (!tx_ring)
 443                         continue;
 444
 445                 do {
 446                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 447                         packets = tx_ring->stats.packets;
 448                         bytes   = tx_ring->stats.bytes;
 449                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 450
 451                 stats->tx_packets += packets;
 452                 stats->tx_bytes   += bytes;
 453                 rx_ring = &tx_ring[1];
 454
 455                 do {
 456                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 457                         packets = rx_ring->stats.packets;
 458                         bytes   = rx_ring->stats.bytes;
 459                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 460
 461                 stats->rx_packets += packets;
 462                 stats->rx_bytes   += bytes;
 463         }
 464         rcu_read_unlock();
 465
 466         /* following stats updated by i40e_watchdog_subtask() */
 467         stats->multicast        = vsi_stats->multicast;
 468         stats->tx_errors        = vsi_stats->tx_errors;
 469         stats->tx_dropped       = vsi_stats->tx_dropped;
 470         stats->rx_errors        = vsi_stats->rx_errors;
 471         stats->rx_dropped       = vsi_stats->rx_dropped;
 472         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 473         stats->rx_length_errors = vsi_stats->rx_length_errors;
 474
 475         return stats;
 476 }
 477
 478 /**
 479  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 480  * @vsi: the VSI to have its stats reset
 481  **/
 482 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 483 {
 484         struct rtnl_link_stats64 *ns;
 485         int i;
 486
 487         if (!vsi)
 488                 return;
 489
 490         ns = i40e_get_vsi_stats_struct(vsi);
 491         memset(ns, 0, sizeof(*ns));
 492         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 493         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 494         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 495         if (vsi->rx_rings && vsi->rx_rings[0]) {
 496                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 497                         memset(&vsi->rx_rings[i]->stats, 0,
 498                                sizeof(vsi->rx_rings[i]->stats));
 499                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 500                                sizeof(vsi->rx_rings[i]->rx_stats));
 501                         memset(&vsi->tx_rings[i]->stats, 0,
 502                                sizeof(vsi->tx_rings[i]->stats));
 503                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 504                                sizeof(vsi->tx_rings[i]->tx_stats));
 505                 }
 506         }
 507         vsi->stat_offsets_loaded = false;
 508 }
 509
 510 /**
 511  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 512  * @pf: the PF to be reset
 513  **/
 514 void i40e_pf_reset_stats(struct i40e_pf *pf)
 515 {
 516         int i;
 517
 518         memset(&pf->stats, 0, sizeof(pf->stats));
 519         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 520         pf->stat_offsets_loaded = false;
 521
 522         for (i = 0; i < I40E_MAX_VEB; i++) {
 523                 if (pf->veb[i]) {
 524                         memset(&pf->veb[i]->stats, 0,
 525                                sizeof(pf->veb[i]->stats));
 526                         memset(&pf->veb[i]->stats_offsets, 0,
 527                                sizeof(pf->veb[i]->stats_offsets));
 528                         pf->veb[i]->stat_offsets_loaded = false;
 529                 }
 530         }
 531 }
 532
 533 /**
 534  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 535  * @hw: ptr to the hardware info
 536  * @hireg: the high 32 bit reg to read
 537  * @loreg: the low 32 bit reg to read
 538  * @offset_loaded: has the initial offset been loaded yet
 539  * @offset: ptr to current offset value
 540  * @stat: ptr to the stat
 541  *
 542  * Since the device stats are not reset at PFReset, they likely will not
 543  * be zeroed when the driver starts.  We'll save the first values read
 544  * and use them as offsets to be subtracted from the raw values in order
 545  * to report stats that count from zero.  In the process, we also manage
 546  * the potential roll-over.
 547  **/
 548 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 549                                bool offset_loaded, u64 *offset, u64 *stat)
 550 {
 551         u64 new_data;
 552
 553         if (hw->device_id == I40E_DEV_ID_QEMU) {
 554                 new_data = rd32(hw, loreg);
 555                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 556         } else {
 557                 new_data = rd64(hw, loreg);
 558         }
 559         if (!offset_loaded)
 560                 *offset = new_data;
 561         if (likely(new_data >= *offset))
 562                 *stat = new_data - *offset;
 563         else
 564                 *stat = (new_data + BIT_ULL(48)) - *offset;
 565         *stat &= 0xFFFFFFFFFFFFULL;
 566 }
 567
 568 /**
 569  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 570  * @hw: ptr to the hardware info
 571  * @reg: the hw reg to read
 572  * @offset_loaded: has the initial offset been loaded yet
 573  * @offset: ptr to current offset value
 574  * @stat: ptr to the stat
 575  **/
 576 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 577                                bool offset_loaded, u64 *offset, u64 *stat)
 578 {
 579         u32 new_data;
 580
 581         new_data = rd32(hw, reg);
 582         if (!offset_loaded)
 583                 *offset = new_data;
 584         if (likely(new_data >= *offset))
 585                 *stat = (u32)(new_data - *offset);
 586         else
 587                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 588 }
 589
 590 /**
 591  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 592  * @vsi: the VSI to be updated
 593  **/
 594 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 595 {
 596         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 597         struct i40e_pf *pf = vsi->back;
 598         struct i40e_hw *hw = &pf->hw;
 599         struct i40e_eth_stats *oes;
 600         struct i40e_eth_stats *es;     /* device's eth stats */
 601
 602         es = &vsi->eth_stats;
 603         oes = &vsi->eth_stats_offsets;
 604
 605         /* Gather up the stats that the hw collects */
 606         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 607                            vsi->stat_offsets_loaded,
 608                            &oes->tx_errors, &es->tx_errors);
 609         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 610                            vsi->stat_offsets_loaded,
 611                            &oes->rx_discards, &es->rx_discards);
 612         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 613                            vsi->stat_offsets_loaded,
 614                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618
 619         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 620                            I40E_GLV_GORCL(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_bytes, &es->rx_bytes);
 623         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 624                            I40E_GLV_UPRCL(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->rx_unicast, &es->rx_unicast);
 627         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 628                            I40E_GLV_MPRCL(stat_idx),
 629                            vsi->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 632                            I40E_GLV_BPRCL(stat_idx),
 633                            vsi->stat_offsets_loaded,
 634                            &oes->rx_broadcast, &es->rx_broadcast);
 635
 636         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 637                            I40E_GLV_GOTCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->tx_bytes, &es->tx_bytes);
 640         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 641                            I40E_GLV_UPTCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->tx_unicast, &es->tx_unicast);
 644         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 645                            I40E_GLV_MPTCL(stat_idx),
 646                            vsi->stat_offsets_loaded,
 647                            &oes->tx_multicast, &es->tx_multicast);
 648         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 649                            I40E_GLV_BPTCL(stat_idx),
 650                            vsi->stat_offsets_loaded,
 651                            &oes->tx_broadcast, &es->tx_broadcast);
 652         vsi->stat_offsets_loaded = true;
 653 }
 654
 655 /**
 656  * i40e_update_veb_stats - Update Switch component statistics
 657  * @veb: the VEB being updated
 658  **/
 659 static void i40e_update_veb_stats(struct i40e_veb *veb)
 660 {
 661         struct i40e_pf *pf = veb->pf;
 662         struct i40e_hw *hw = &pf->hw;
 663         struct i40e_eth_stats *oes;
 664         struct i40e_eth_stats *es;     /* device's eth stats */
 665         struct i40e_veb_tc_stats *veb_oes;
 666         struct i40e_veb_tc_stats *veb_es;
 667         int i, idx = 0;
 668
 669         idx = veb->stats_idx;
 670         es = &veb->stats;
 671         oes = &veb->stats_offsets;
 672         veb_es = &veb->tc_stats;
 673         veb_oes = &veb->tc_stats_offsets;
 674
 675         /* Gather up the stats that the hw collects */
 676         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 677                            veb->stat_offsets_loaded,
 678                            &oes->tx_discards, &es->tx_discards);
 679         if (hw->revision_id > 0)
 680                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 681                                    veb->stat_offsets_loaded,
 682                                    &oes->rx_unknown_protocol,
 683                                    &es->rx_unknown_protocol);
 684         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 685                            veb->stat_offsets_loaded,
 686                            &oes->rx_bytes, &es->rx_bytes);
 687         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->rx_unicast, &es->rx_unicast);
 690         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 691                            veb->stat_offsets_loaded,
 692                            &oes->rx_multicast, &es->rx_multicast);
 693         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_broadcast, &es->rx_broadcast);
 696
 697         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 698                            veb->stat_offsets_loaded,
 699                            &oes->tx_bytes, &es->tx_bytes);
 700         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 701                            veb->stat_offsets_loaded,
 702                            &oes->tx_unicast, &es->tx_unicast);
 703         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 704                            veb->stat_offsets_loaded,
 705                            &oes->tx_multicast, &es->tx_multicast);
 706         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_broadcast, &es->tx_broadcast);
 709         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 710                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 711                                    I40E_GLVEBTC_RPCL(i, idx),
 712                                    veb->stat_offsets_loaded,
 713                                    &veb_oes->tc_rx_packets[i],
 714                                    &veb_es->tc_rx_packets[i]);
 715                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 716                                    I40E_GLVEBTC_RBCL(i, idx),
 717                                    veb->stat_offsets_loaded,
 718                                    &veb_oes->tc_rx_bytes[i],
 719                                    &veb_es->tc_rx_bytes[i]);
 720                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 721                                    I40E_GLVEBTC_TPCL(i, idx),
 722                                    veb->stat_offsets_loaded,
 723                                    &veb_oes->tc_tx_packets[i],
 724                                    &veb_es->tc_tx_packets[i]);
 725                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 726                                    I40E_GLVEBTC_TBCL(i, idx),
 727                                    veb->stat_offsets_loaded,
 728                                    &veb_oes->tc_tx_bytes[i],
 729                                    &veb_es->tc_tx_bytes[i]);
 730         }
 731         veb->stat_offsets_loaded = true;
 732 }
 733
 734 #ifdef I40E_FCOE
 735 /**
 736  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 737  * @vsi: the VSI that is capable of doing FCoE
 738  **/
 739 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 740 {
 741         struct i40e_pf *pf = vsi->back;
 742         struct i40e_hw *hw = &pf->hw;
 743         struct i40e_fcoe_stats *ofs;
 744         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 745         int idx;
 746
 747         if (vsi->type != I40E_VSI_FCOE)
 748                 return;
 749
 750         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 751         fs = &vsi->fcoe_stats;
 752         ofs = &vsi->fcoe_stats_offsets;
 753
 754         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 755                            vsi->fcoe_stat_offsets_loaded,
 756                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 757         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 758                            vsi->fcoe_stat_offsets_loaded,
 759                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 760         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 761                            vsi->fcoe_stat_offsets_loaded,
 762                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 763         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 772         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 775         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 778
 779         vsi->fcoe_stat_offsets_loaded = true;
 780 }
 781
 782 #endif
 783 /**
 784  * i40e_update_vsi_stats - Update the vsi statistics counters.
 785  * @vsi: the VSI to be updated
 786  *
 787  * There are a few instances where we store the same stat in a
 788  * couple of different structs.  This is partly because we have
 789  * the netdev stats that need to be filled out, which is slightly
 790  * different from the "eth_stats" defined by the chip and used in
 791  * VF communications.  We sort it out here.
 792  **/
 793 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 794 {
 795         struct i40e_pf *pf = vsi->back;
 796         struct rtnl_link_stats64 *ons;
 797         struct rtnl_link_stats64 *ns;   /* netdev stats */
 798         struct i40e_eth_stats *oes;
 799         struct i40e_eth_stats *es;     /* device's eth stats */
 800         u32 tx_restart, tx_busy;
 801         u64 tx_lost_interrupt;
 802         struct i40e_ring *p;
 803         u32 rx_page, rx_buf;
 804         u64 bytes, packets;
 805         unsigned int start;
 806         u64 tx_linearize;
 807         u64 tx_force_wb;
 808         u64 rx_p, rx_b;
 809         u64 tx_p, tx_b;
 810         u16 q;
 811
 812         if (test_bit(__I40E_DOWN, &vsi->state) ||
 813             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 814                 return;
 815
 816         ns = i40e_get_vsi_stats_struct(vsi);
 817         ons = &vsi->net_stats_offsets;
 818         es = &vsi->eth_stats;
 819         oes = &vsi->eth_stats_offsets;
 820
 821         /* Gather up the netdev and vsi stats that the driver collects
 822          * on the fly during packet processing
 823          */
 824         rx_b = rx_p = 0;
 825         tx_b = tx_p = 0;
 826         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 827         tx_lost_interrupt = 0;
 828         rx_page = 0;
 829         rx_buf = 0;
 830         rcu_read_lock();
 831         for (q = 0; q < vsi->num_queue_pairs; q++) {
 832                 /* locate Tx ring */
 833                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 834
 835                 do {
 836                         start = u64_stats_fetch_begin_irq(&p->syncp);
 837                         packets = p->stats.packets;
 838                         bytes = p->stats.bytes;
 839                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 840                 tx_b += bytes;
 841                 tx_p += packets;
 842                 tx_restart += p->tx_stats.restart_queue;
 843                 tx_busy += p->tx_stats.tx_busy;
 844                 tx_linearize += p->tx_stats.tx_linearize;
 845                 tx_force_wb += p->tx_stats.tx_force_wb;
 846                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 847
 848                 /* Rx queue is part of the same block as Tx queue */
 849                 p = &p[1];
 850                 do {
 851                         start = u64_stats_fetch_begin_irq(&p->syncp);
 852                         packets = p->stats.packets;
 853                         bytes = p->stats.bytes;
 854                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 855                 rx_b += bytes;
 856                 rx_p += packets;
 857                 rx_buf += p->rx_stats.alloc_buff_failed;
 858                 rx_page += p->rx_stats.alloc_page_failed;
 859         }
 860         rcu_read_unlock();
 861         vsi->tx_restart = tx_restart;
 862         vsi->tx_busy = tx_busy;
 863         vsi->tx_linearize = tx_linearize;
 864         vsi->tx_force_wb = tx_force_wb;
 865         vsi->tx_lost_interrupt = tx_lost_interrupt;
 866         vsi->rx_page_failed = rx_page;
 867         vsi->rx_buf_failed = rx_buf;
 868
 869         ns->rx_packets = rx_p;
 870         ns->rx_bytes = rx_b;
 871         ns->tx_packets = tx_p;
 872         ns->tx_bytes = tx_b;
 873
 874         /* update netdev stats from eth stats */
 875         i40e_update_eth_stats(vsi);
 876         ons->tx_errors = oes->tx_errors;
 877         ns->tx_errors = es->tx_errors;
 878         ons->multicast = oes->rx_multicast;
 879         ns->multicast = es->rx_multicast;
 880         ons->rx_dropped = oes->rx_discards;
 881         ns->rx_dropped = es->rx_discards;
 882         ons->tx_dropped = oes->tx_discards;
 883         ns->tx_dropped = es->tx_discards;
 884
 885         /* pull in a couple PF stats if this is the main vsi */
 886         if (vsi == pf->vsi[pf->lan_vsi]) {
 887                 ns->rx_crc_errors = pf->stats.crc_errors;
 888                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 889                 ns->rx_length_errors = pf->stats.rx_length_errors;
 890         }
 891 }
 892
 893 /**
 894  * i40e_update_pf_stats - Update the PF statistics counters.
 895  * @pf: the PF to be updated
 896  **/
 897 static void i40e_update_pf_stats(struct i40e_pf *pf)
 898 {
 899         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 900         struct i40e_hw_port_stats *nsd = &pf->stats;
 901         struct i40e_hw *hw = &pf->hw;
 902         u32 val;
 903         int i;
 904
 905         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 906                            I40E_GLPRT_GORCL(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 909         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 910                            I40E_GLPRT_GOTCL(hw->port),
 911                            pf->stat_offsets_loaded,
 912                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 913         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 914                            pf->stat_offsets_loaded,
 915                            &osd->eth.rx_discards,
 916                            &nsd->eth.rx_discards);
 917         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 918                            I40E_GLPRT_UPRCL(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_unicast,
 921                            &nsd->eth.rx_unicast);
 922         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 923                            I40E_GLPRT_MPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_multicast,
 926                            &nsd->eth.rx_multicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 928                            I40E_GLPRT_BPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_broadcast,
 931                            &nsd->eth.rx_broadcast);
 932         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 933                            I40E_GLPRT_UPTCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.tx_unicast,
 936                            &nsd->eth.tx_unicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 938                            I40E_GLPRT_MPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_multicast,
 941                            &nsd->eth.tx_multicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 943                            I40E_GLPRT_BPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_broadcast,
 946                            &nsd->eth.tx_broadcast);
 947
 948         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->tx_dropped_link_down,
 951                            &nsd->tx_dropped_link_down);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->crc_errors, &nsd->crc_errors);
 956
 957         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->illegal_bytes, &nsd->illegal_bytes);
 960
 961         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 962                            pf->stat_offsets_loaded,
 963                            &osd->mac_local_faults,
 964                            &nsd->mac_local_faults);
 965         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 966                            pf->stat_offsets_loaded,
 967                            &osd->mac_remote_faults,
 968                            &nsd->mac_remote_faults);
 969
 970         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->rx_length_errors,
 973                            &nsd->rx_length_errors);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->link_xon_rx, &nsd->link_xon_rx);
 978         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->link_xon_tx, &nsd->link_xon_tx);
 981         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 984         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 987
 988         for (i = 0; i < 8; i++) {
 989                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 990                                    pf->stat_offsets_loaded,
 991                                    &osd->priority_xoff_rx[i],
 992                                    &nsd->priority_xoff_rx[i]);
 993                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 994                                    pf->stat_offsets_loaded,
 995                                    &osd->priority_xon_rx[i],
 996                                    &nsd->priority_xon_rx[i]);
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_tx[i],
1000                                    &nsd->priority_xon_tx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xoff_tx[i],
1004                                    &nsd->priority_xoff_tx[i]);
1005                 i40e_stat_update32(hw,
1006                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1007                                    pf->stat_offsets_loaded,
1008                                    &osd->priority_xon_2_xoff[i],
1009                                    &nsd->priority_xon_2_xoff[i]);
1010         }
1011
1012         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1013                            I40E_GLPRT_PRC64L(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->rx_size_64, &nsd->rx_size_64);
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1017                            I40E_GLPRT_PRC127L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_127, &nsd->rx_size_127);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1021                            I40E_GLPRT_PRC255L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_255, &nsd->rx_size_255);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1025                            I40E_GLPRT_PRC511L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_511, &nsd->rx_size_511);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1029                            I40E_GLPRT_PRC1023L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_1023, &nsd->rx_size_1023);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1033                            I40E_GLPRT_PRC1522L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1522, &nsd->rx_size_1522);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1037                            I40E_GLPRT_PRC9522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_big, &nsd->rx_size_big);
1040
1041         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1042                            I40E_GLPRT_PTC64L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_size_64, &nsd->tx_size_64);
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1046                            I40E_GLPRT_PTC127L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_127, &nsd->tx_size_127);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1050                            I40E_GLPRT_PTC255L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_255, &nsd->tx_size_255);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1054                            I40E_GLPRT_PTC511L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_511, &nsd->tx_size_511);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1058                            I40E_GLPRT_PTC1023L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_1023, &nsd->tx_size_1023);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1062                            I40E_GLPRT_PTC1522L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1522, &nsd->tx_size_1522);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1066                            I40E_GLPRT_PTC9522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_big, &nsd->tx_size_big);
1069
1070         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->rx_undersize, &nsd->rx_undersize);
1073         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->rx_fragments, &nsd->rx_fragments);
1076         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->rx_oversize, &nsd->rx_oversize);
1079         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1080                            pf->stat_offsets_loaded,
1081                            &osd->rx_jabber, &nsd->rx_jabber);
1082
1083         /* FDIR stats */
1084         i40e_stat_update32(hw,
1085                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1086                            pf->stat_offsets_loaded,
1087                            &osd->fd_atr_match, &nsd->fd_atr_match);
1088         i40e_stat_update32(hw,
1089                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1090                            pf->stat_offsets_loaded,
1091                            &osd->fd_sb_match, &nsd->fd_sb_match);
1092         i40e_stat_update32(hw,
1093                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1094                       pf->stat_offsets_loaded,
1095                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1096
1097         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1098         nsd->tx_lpi_status =
1099                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1100                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1101         nsd->rx_lpi_status =
1102                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1103                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1104         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1105                            pf->stat_offsets_loaded,
1106                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1107         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1110
1111         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1112             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1113                 nsd->fd_sb_status = true;
1114         else
1115                 nsd->fd_sb_status = false;
1116
1117         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1118             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1119                 nsd->fd_atr_status = true;
1120         else
1121                 nsd->fd_atr_status = false;
1122
1123         pf->stat_offsets_loaded = true;
1124 }
1125
1126 /**
1127  * i40e_update_stats - Update the various statistics counters.
1128  * @vsi: the VSI to be updated
1129  *
1130  * Update the various stats for this VSI and its related entities.
1131  **/
1132 void i40e_update_stats(struct i40e_vsi *vsi)
1133 {
1134         struct i40e_pf *pf = vsi->back;
1135
1136         if (vsi == pf->vsi[pf->lan_vsi])
1137                 i40e_update_pf_stats(pf);
1138
1139         i40e_update_vsi_stats(vsi);
1140 #ifdef I40E_FCOE
1141         i40e_update_fcoe_stats(vsi);
1142 #endif
1143 }
1144
1145 /**
1146  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1147  * @vsi: the VSI to be searched
1148  * @macaddr: the MAC address
1149  * @vlan: the vlan
1150  * @is_vf: make sure its a VF filter, else doesn't matter
1151  * @is_netdev: make sure its a netdev filter, else doesn't matter
1152  *
1153  * Returns ptr to the filter object or NULL
1154  **/
1155 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1156                                                 u8 *macaddr, s16 vlan,
1157                                                 bool is_vf, bool is_netdev)
1158 {
1159         struct i40e_mac_filter *f;
1160
1161         if (!vsi || !macaddr)
1162                 return NULL;
1163
1164         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1165                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1166                     (vlan == f->vlan)    &&
1167                     (!is_vf || f->is_vf) &&
1168                     (!is_netdev || f->is_netdev))
1169                         return f;
1170         }
1171         return NULL;
1172 }
1173
1174 /**
1175  * i40e_find_mac - Find a mac addr in the macvlan filters list
1176  * @vsi: the VSI to be searched
1177  * @macaddr: the MAC address we are searching for
1178  * @is_vf: make sure its a VF filter, else doesn't matter
1179  * @is_netdev: make sure its a netdev filter, else doesn't matter
1180  *
1181  * Returns the first filter with the provided MAC address or NULL if
1182  * MAC address was not found
1183  **/
1184 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1185                                       bool is_vf, bool is_netdev)
1186 {
1187         struct i40e_mac_filter *f;
1188
1189         if (!vsi || !macaddr)
1190                 return NULL;
1191
1192         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1193                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1194                     (!is_vf || f->is_vf) &&
1195                     (!is_netdev || f->is_netdev))
1196                         return f;
1197         }
1198         return NULL;
1199 }
1200
1201 /**
1202  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1203  * @vsi: the VSI to be searched
1204  *
1205  * Returns true if VSI is in vlan mode or false otherwise
1206  **/
1207 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1208 {
1209         struct i40e_mac_filter *f;
1210
1211         /* Only -1 for all the filters denotes not in vlan mode
1212          * so we have to go through all the list in order to make sure
1213          */
1214         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1215                 if (f->vlan >= 0 || vsi->info.pvid)
1216                         return true;
1217         }
1218
1219         return false;
1220 }
1221
1222 /**
1223  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1224  * @vsi: the VSI to be searched
1225  * @macaddr: the mac address to be filtered
1226  * @is_vf: true if it is a VF
1227  * @is_netdev: true if it is a netdev
1228  *
1229  * Goes through all the macvlan filters and adds a
1230  * macvlan filter for each unique vlan that already exists
1231  *
1232  * Returns first filter found on success, else NULL
1233  **/
1234 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1235                                              bool is_vf, bool is_netdev)
1236 {
1237         struct i40e_mac_filter *f;
1238
1239         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1240                 if (vsi->info.pvid)
1241                         f->vlan = le16_to_cpu(vsi->info.pvid);
1242                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1243                                       is_vf, is_netdev)) {
1244                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1245                                              is_vf, is_netdev))
1246                                 return NULL;
1247                 }
1248         }
1249
1250         return list_first_entry_or_null(&vsi->mac_filter_list,
1251                                         struct i40e_mac_filter, list);
1252 }
1253
1254 /**
1255  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1256  * @vsi: the VSI to be searched
1257  * @macaddr: the mac address to be removed
1258  * @is_vf: true if it is a VF
1259  * @is_netdev: true if it is a netdev
1260  *
1261  * Removes a given MAC address from a VSI, regardless of VLAN
1262  *
1263  * Returns 0 for success, or error
1264  **/
1265 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1266                           bool is_vf, bool is_netdev)
1267 {
1268         struct i40e_mac_filter *f = NULL;
1269         int changed = 0;
1270
1271         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1272              "Missing mac_filter_list_lock\n");
1273         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1274                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1275                     (is_vf == f->is_vf) &&
1276                     (is_netdev == f->is_netdev)) {
1277                         f->counter--;
1278                         f->changed = true;
1279                         changed = 1;
1280                 }
1281         }
1282         if (changed) {
1283                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1284                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1285                 return 0;
1286         }
1287         return -ENOENT;
1288 }
1289
1290 /**
1291  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1292  * @vsi: the PF Main VSI - inappropriate for any other VSI
1293  * @macaddr: the MAC address
1294  *
1295  * Some older firmware configurations set up a default promiscuous VLAN
1296  * filter that needs to be removed.
1297  **/
1298 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1299 {
1300         struct i40e_aqc_remove_macvlan_element_data element;
1301         struct i40e_pf *pf = vsi->back;
1302         i40e_status ret;
1303
1304         /* Only appropriate for the PF main VSI */
1305         if (vsi->type != I40E_VSI_MAIN)
1306                 return -EINVAL;
1307
1308         memset(&element, 0, sizeof(element));
1309         ether_addr_copy(element.mac_addr, macaddr);
1310         element.vlan_tag = 0;
1311         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1312                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1313         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1314         if (ret)
1315                 return -ENOENT;
1316
1317         return 0;
1318 }
1319
1320 /**
1321  * i40e_add_filter - Add a mac/vlan filter to the VSI
1322  * @vsi: the VSI to be searched
1323  * @macaddr: the MAC address
1324  * @vlan: the vlan
1325  * @is_vf: make sure its a VF filter, else doesn't matter
1326  * @is_netdev: make sure its a netdev filter, else doesn't matter
1327  *
1328  * Returns ptr to the filter object or NULL when no memory available.
1329  *
1330  * NOTE: This function is expected to be called with mac_filter_list_lock
1331  * being held.
1332  **/
1333 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1334                                         u8 *macaddr, s16 vlan,
1335                                         bool is_vf, bool is_netdev)
1336 {
1337         struct i40e_mac_filter *f;
1338
1339         if (!vsi || !macaddr)
1340                 return NULL;
1341
1342         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1343         if (!f) {
1344                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1345                 if (!f)
1346                         goto add_filter_out;
1347
1348                 ether_addr_copy(f->macaddr, macaddr);
1349                 f->vlan = vlan;
1350                 f->changed = true;
1351
1352                 INIT_LIST_HEAD(&f->list);
1353                 list_add_tail(&f->list, &vsi->mac_filter_list);
1354         }
1355
1356         /* increment counter and add a new flag if needed */
1357         if (is_vf) {
1358                 if (!f->is_vf) {
1359                         f->is_vf = true;
1360                         f->counter++;
1361                 }
1362         } else if (is_netdev) {
1363                 if (!f->is_netdev) {
1364                         f->is_netdev = true;
1365                         f->counter++;
1366                 }
1367         } else {
1368                 f->counter++;
1369         }
1370
1371         /* changed tells sync_filters_subtask to
1372          * push the filter down to the firmware
1373          */
1374         if (f->changed) {
1375                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1376                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1377         }
1378
1379 add_filter_out:
1380         return f;
1381 }
1382
1383 /**
1384  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1385  * @vsi: the VSI to be searched
1386  * @macaddr: the MAC address
1387  * @vlan: the vlan
1388  * @is_vf: make sure it's a VF filter, else doesn't matter
1389  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1390  *
1391  * NOTE: This function is expected to be called with mac_filter_list_lock
1392  * being held.
1393  **/
1394 void i40e_del_filter(struct i40e_vsi *vsi,
1395                      u8 *macaddr, s16 vlan,
1396                      bool is_vf, bool is_netdev)
1397 {
1398         struct i40e_mac_filter *f;
1399
1400         if (!vsi || !macaddr)
1401                 return;
1402
1403         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1404         if (!f || f->counter == 0)
1405                 return;
1406
1407         if (is_vf) {
1408                 if (f->is_vf) {
1409                         f->is_vf = false;
1410                         f->counter--;
1411                 }
1412         } else if (is_netdev) {
1413                 if (f->is_netdev) {
1414                         f->is_netdev = false;
1415                         f->counter--;
1416                 }
1417         } else {
1418                 /* make sure we don't remove a filter in use by VF or netdev */
1419                 int min_f = 0;
1420
1421                 min_f += (f->is_vf ? 1 : 0);
1422                 min_f += (f->is_netdev ? 1 : 0);
1423
1424                 if (f->counter > min_f)
1425                         f->counter--;
1426         }
1427
1428         /* counter == 0 tells sync_filters_subtask to
1429          * remove the filter from the firmware's list
1430          */
1431         if (f->counter == 0) {
1432                 f->changed = true;
1433                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1434                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1435         }
1436 }
1437
1438 /**
1439  * i40e_set_mac - NDO callback to set mac address
1440  * @netdev: network interface device structure
1441  * @p: pointer to an address structure
1442  *
1443  * Returns 0 on success, negative on failure
1444  **/
1445 #ifdef I40E_FCOE
1446 int i40e_set_mac(struct net_device *netdev, void *p)
1447 #else
1448 static int i40e_set_mac(struct net_device *netdev, void *p)
1449 #endif
1450 {
1451         struct i40e_netdev_priv *np = netdev_priv(netdev);
1452         struct i40e_vsi *vsi = np->vsi;
1453         struct i40e_pf *pf = vsi->back;
1454         struct i40e_hw *hw = &pf->hw;
1455         struct sockaddr *addr = p;
1456         struct i40e_mac_filter *f;
1457
1458         if (!is_valid_ether_addr(addr->sa_data))
1459                 return -EADDRNOTAVAIL;
1460
1461         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1462                 netdev_info(netdev, "already using mac address %pM\n",
1463                             addr->sa_data);
1464                 return 0;
1465         }
1466
1467         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1468             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1469                 return -EADDRNOTAVAIL;
1470
1471         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1472                 netdev_info(netdev, "returning to hw mac address %pM\n",
1473                             hw->mac.addr);
1474         else
1475                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1476
1477         if (vsi->type == I40E_VSI_MAIN) {
1478                 i40e_status ret;
1479
1480                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1481                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1482                                                 addr->sa_data, NULL);
1483                 if (ret) {
1484                         netdev_info(netdev,
1485                                     "Addr change for Main VSI failed: %d\n",
1486                                     ret);
1487                         return -EADDRNOTAVAIL;
1488                 }
1489         }
1490
1491         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1492                 struct i40e_aqc_remove_macvlan_element_data element;
1493
1494                 memset(&element, 0, sizeof(element));
1495                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1496                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1497                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1498         } else {
1499                 spin_lock_bh(&vsi->mac_filter_list_lock);
1500                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1501                                 false, false);
1502                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1503         }
1504
1505         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1506                 struct i40e_aqc_add_macvlan_element_data element;
1507
1508                 memset(&element, 0, sizeof(element));
1509                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1510                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1511                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1512         } else {
1513                 spin_lock_bh(&vsi->mac_filter_list_lock);
1514                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1515                                     false, false);
1516                 if (f)
1517                         f->is_laa = true;
1518                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1519         }
1520
1521         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1522
1523         /* schedule our worker thread which will take care of
1524          * applying the new filter changes
1525          */
1526         i40e_service_event_schedule(vsi->back);
1527         return 0;
1528 }
1529
1530 /**
1531  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1532  * @vsi: the VSI being setup
1533  * @ctxt: VSI context structure
1534  * @enabled_tc: Enabled TCs bitmap
1535  * @is_add: True if called before Add VSI
1536  *
1537  * Setup VSI queue mapping for enabled traffic classes.
1538  **/
1539 #ifdef I40E_FCOE
1540 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1541                               struct i40e_vsi_context *ctxt,
1542                               u8 enabled_tc,
1543                               bool is_add)
1544 #else
1545 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1546                                      struct i40e_vsi_context *ctxt,
1547                                      u8 enabled_tc,
1548                                      bool is_add)
1549 #endif
1550 {
1551         struct i40e_pf *pf = vsi->back;
1552         u16 sections = 0;
1553         u8 netdev_tc = 0;
1554         u16 numtc = 0;
1555         u16 qcount;
1556         u8 offset;
1557         u16 qmap;
1558         int i;
1559         u16 num_tc_qps = 0;
1560
1561         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1562         offset = 0;
1563
1564         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1565                 /* Find numtc from enabled TC bitmap */
1566                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1567                         if (enabled_tc & BIT(i)) /* TC is enabled */
1568                                 numtc++;
1569                 }
1570                 if (!numtc) {
1571                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1572                         numtc = 1;
1573                 }
1574         } else {
1575                 /* At least TC0 is enabled in case of non-DCB case */
1576                 numtc = 1;
1577         }
1578
1579         vsi->tc_config.numtc = numtc;
1580         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1581         /* Number of queues per enabled TC */
1582         /* In MFP case we can have a much lower count of MSIx
1583          * vectors available and so we need to lower the used
1584          * q count.
1585          */
1586         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1587                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1588         else
1589                 qcount = vsi->alloc_queue_pairs;
1590         num_tc_qps = qcount / numtc;
1591         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1592
1593         /* Setup queue offset/count for all TCs for given VSI */
1594         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1595                 /* See if the given TC is enabled for the given VSI */
1596                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1597                         /* TC is enabled */
1598                         int pow, num_qps;
1599
1600                         switch (vsi->type) {
1601                         case I40E_VSI_MAIN:
1602                                 qcount = min_t(int, pf->alloc_rss_size,
1603                                                num_tc_qps);
1604                                 break;
1605 #ifdef I40E_FCOE
1606                         case I40E_VSI_FCOE:
1607                                 qcount = num_tc_qps;
1608                                 break;
1609 #endif
1610                         case I40E_VSI_FDIR:
1611                         case I40E_VSI_SRIOV:
1612                         case I40E_VSI_VMDQ2:
1613                         default:
1614                                 qcount = num_tc_qps;
1615                                 WARN_ON(i != 0);
1616                                 break;
1617                         }
1618                         vsi->tc_config.tc_info[i].qoffset = offset;
1619                         vsi->tc_config.tc_info[i].qcount = qcount;
1620
1621                         /* find the next higher power-of-2 of num queue pairs */
1622                         num_qps = qcount;
1623                         pow = 0;
1624                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1625                                 pow++;
1626                                 num_qps >>= 1;
1627                         }
1628
1629                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1630                         qmap =
1631                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1632                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1633
1634                         offset += qcount;
1635                 } else {
1636                         /* TC is not enabled so set the offset to
1637                          * default queue and allocate one queue
1638                          * for the given TC.
1639                          */
1640                         vsi->tc_config.tc_info[i].qoffset = 0;
1641                         vsi->tc_config.tc_info[i].qcount = 1;
1642                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1643
1644                         qmap = 0;
1645                 }
1646                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1647         }
1648
1649         /* Set actual Tx/Rx queue pairs */
1650         vsi->num_queue_pairs = offset;
1651         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1652                 if (vsi->req_queue_pairs > 0)
1653                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1654                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1655                         vsi->num_queue_pairs = pf->num_lan_msix;
1656         }
1657
1658         /* Scheduler section valid can only be set for ADD VSI */
1659         if (is_add) {
1660                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1661
1662                 ctxt->info.up_enable_bits = enabled_tc;
1663         }
1664         if (vsi->type == I40E_VSI_SRIOV) {
1665                 ctxt->info.mapping_flags |=
1666                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1667                 for (i = 0; i < vsi->num_queue_pairs; i++)
1668                         ctxt->info.queue_mapping[i] =
1669                                                cpu_to_le16(vsi->base_queue + i);
1670         } else {
1671                 ctxt->info.mapping_flags |=
1672                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1673                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1674         }
1675         ctxt->info.valid_sections |= cpu_to_le16(sections);
1676 }
1677
1678 /**
1679  * i40e_set_rx_mode - NDO callback to set the netdev filters
1680  * @netdev: network interface device structure
1681  **/
1682 #ifdef I40E_FCOE
1683 void i40e_set_rx_mode(struct net_device *netdev)
1684 #else
1685 static void i40e_set_rx_mode(struct net_device *netdev)
1686 #endif
1687 {
1688         struct i40e_netdev_priv *np = netdev_priv(netdev);
1689         struct i40e_mac_filter *f, *ftmp;
1690         struct i40e_vsi *vsi = np->vsi;
1691         struct netdev_hw_addr *uca;
1692         struct netdev_hw_addr *mca;
1693         struct netdev_hw_addr *ha;
1694
1695         spin_lock_bh(&vsi->mac_filter_list_lock);
1696
1697         /* add addr if not already in the filter list */
1698         netdev_for_each_uc_addr(uca, netdev) {
1699                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1700                         if (i40e_is_vsi_in_vlan(vsi))
1701                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1702                                                      false, true);
1703                         else
1704                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1705                                                 false, true);
1706                 }
1707         }
1708
1709         netdev_for_each_mc_addr(mca, netdev) {
1710                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1711                         if (i40e_is_vsi_in_vlan(vsi))
1712                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1713                                                      false, true);
1714                         else
1715                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1716                                                 false, true);
1717                 }
1718         }
1719
1720         /* remove filter if not in netdev list */
1721         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722
1723                 if (!f->is_netdev)
1724                         continue;
1725
1726                 netdev_for_each_mc_addr(mca, netdev)
1727                         if (ether_addr_equal(mca->addr, f->macaddr))
1728                                 goto bottom_of_search_loop;
1729
1730                 netdev_for_each_uc_addr(uca, netdev)
1731                         if (ether_addr_equal(uca->addr, f->macaddr))
1732                                 goto bottom_of_search_loop;
1733
1734                 for_each_dev_addr(netdev, ha)
1735                         if (ether_addr_equal(ha->addr, f->macaddr))
1736                                 goto bottom_of_search_loop;
1737
1738                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1739                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1740
1741 bottom_of_search_loop:
1742                 continue;
1743         }
1744         spin_unlock_bh(&vsi->mac_filter_list_lock);
1745
1746         /* check for other flag changes */
1747         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1748                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1749                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1750         }
1751
1752         /* schedule our worker thread which will take care of
1753          * applying the new filter changes
1754          */
1755         i40e_service_event_schedule(vsi->back);
1756 }
1757
1758 /**
1759  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1760  * @src: source MAC filter entry to be clones
1761  *
1762  * Returns the pointer to newly cloned MAC filter entry or NULL
1763  * in case of error
1764  **/
1765 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1766                                         struct i40e_mac_filter *src)
1767 {
1768         struct i40e_mac_filter *f;
1769
1770         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1771         if (!f)
1772                 return NULL;
1773         *f = *src;
1774
1775         INIT_LIST_HEAD(&f->list);
1776
1777         return f;
1778 }
1779
1780 /**
1781  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1782  * @vsi: pointer to vsi struct
1783  * @from: Pointer to list which contains MAC filter entries - changes to
1784  *        those entries needs to be undone.
1785  *
1786  * MAC filter entries from list were slated to be removed from device.
1787  **/
1788 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1789                                          struct list_head *from)
1790 {
1791         struct i40e_mac_filter *f, *ftmp;
1792
1793         list_for_each_entry_safe(f, ftmp, from, list) {
1794                 f->changed = true;
1795                 /* Move the element back into MAC filter list*/
1796                 list_move_tail(&f->list, &vsi->mac_filter_list);
1797         }
1798 }
1799
1800 /**
1801  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1802  * @vsi: pointer to vsi struct
1803  *
1804  * MAC filter entries from list were slated to be added from device.
1805  **/
1806 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1807 {
1808         struct i40e_mac_filter *f, *ftmp;
1809
1810         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1811                 if (!f->changed && f->counter)
1812                         f->changed = true;
1813         }
1814 }
1815
1816 /**
1817  * i40e_cleanup_add_list - Deletes the element from add list and release
1818  *                      memory
1819  * @add_list: Pointer to list which contains MAC filter entries
1820  **/
1821 static void i40e_cleanup_add_list(struct list_head *add_list)
1822 {
1823         struct i40e_mac_filter *f, *ftmp;
1824
1825         list_for_each_entry_safe(f, ftmp, add_list, list) {
1826                 list_del(&f->list);
1827                 kfree(f);
1828         }
1829 }
1830
1831 /**
1832  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1833  * @vsi: ptr to the VSI
1834  *
1835  * Push any outstanding VSI filter changes through the AdminQ.
1836  *
1837  * Returns 0 or error value
1838  **/
1839 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1840 {
1841         struct list_head tmp_del_list, tmp_add_list;
1842         struct i40e_mac_filter *f, *ftmp, *fclone;
1843         struct i40e_hw *hw = &vsi->back->hw;
1844         bool promisc_forced_on = false;
1845         bool add_happened = false;
1846         int filter_list_len = 0;
1847         u32 changed_flags = 0;
1848         i40e_status aq_ret = 0;
1849         bool err_cond = false;
1850         int retval = 0;
1851         struct i40e_pf *pf;
1852         int num_add = 0;
1853         int num_del = 0;
1854         int aq_err = 0;
1855         u16 cmd_flags;
1856
1857         /* empty array typed pointers, kcalloc later */
1858         struct i40e_aqc_add_macvlan_element_data *add_list;
1859         struct i40e_aqc_remove_macvlan_element_data *del_list;
1860
1861         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1862                 usleep_range(1000, 2000);
1863         pf = vsi->back;
1864
1865         if (vsi->netdev) {
1866                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1867                 vsi->current_netdev_flags = vsi->netdev->flags;
1868         }
1869
1870         INIT_LIST_HEAD(&tmp_del_list);
1871         INIT_LIST_HEAD(&tmp_add_list);
1872
1873         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1874                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1875
1876                 spin_lock_bh(&vsi->mac_filter_list_lock);
1877                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1878                         if (!f->changed)
1879                                 continue;
1880
1881                         if (f->counter != 0)
1882                                 continue;
1883                         f->changed = false;
1884
1885                         /* Move the element into temporary del_list */
1886                         list_move_tail(&f->list, &tmp_del_list);
1887                 }
1888
1889                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1890                         if (!f->changed)
1891                                 continue;
1892
1893                         if (f->counter == 0)
1894                                 continue;
1895                         f->changed = false;
1896
1897                         /* Clone MAC filter entry and add into temporary list */
1898                         fclone = i40e_mac_filter_entry_clone(f);
1899                         if (!fclone) {
1900                                 err_cond = true;
1901                                 break;
1902                         }
1903                         list_add_tail(&fclone->list, &tmp_add_list);
1904                 }
1905
1906                 /* if failed to clone MAC filter entry - undo */
1907                 if (err_cond) {
1908                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1909                         i40e_undo_add_filter_entries(vsi);
1910                 }
1911                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1912
1913                 if (err_cond) {
1914                         i40e_cleanup_add_list(&tmp_add_list);
1915                         retval = -ENOMEM;
1916                         goto out;
1917                 }
1918         }
1919
1920         /* Now process 'del_list' outside the lock */
1921         if (!list_empty(&tmp_del_list)) {
1922                 int del_list_size;
1923
1924                 filter_list_len = hw->aq.asq_buf_size /
1925                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1926                 del_list_size = filter_list_len *
1927                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1928                 del_list = kzalloc(del_list_size, GFP_ATOMIC);
1929                 if (!del_list) {
1930                         i40e_cleanup_add_list(&tmp_add_list);
1931
1932                         /* Undo VSI's MAC filter entry element updates */
1933                         spin_lock_bh(&vsi->mac_filter_list_lock);
1934                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1935                         i40e_undo_add_filter_entries(vsi);
1936                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1937                         retval = -ENOMEM;
1938                         goto out;
1939                 }
1940
1941                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1942                         cmd_flags = 0;
1943
1944                         /* add to delete list */
1945                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1946                         del_list[num_del].vlan_tag =
1947                                 cpu_to_le16((u16)(f->vlan ==
1948                                             I40E_VLAN_ANY ? 0 : f->vlan));
1949
1950                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1951                         del_list[num_del].flags = cmd_flags;
1952                         num_del++;
1953
1954                         /* flush a full buffer */
1955                         if (num_del == filter_list_len) {
1956                                 aq_ret =
1957                                         i40e_aq_remove_macvlan(hw, vsi->seid,
1958                                                                del_list,
1959                                                                num_del, NULL);
1960                                 aq_err = hw->aq.asq_last_status;
1961                                 num_del = 0;
1962                                 memset(del_list, 0, del_list_size);
1963
1964                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1965                                         retval = -EIO;
1966                                         dev_err(&pf->pdev->dev,
1967                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1968
1969                                                  i40e_stat_str(hw, aq_ret),
1970                                                  i40e_aq_str(hw, aq_err));
1971                                 }
1972                         }
1973                         /* Release memory for MAC filter entries which were
1974                          * synced up with HW.
1975                          */
1976                         list_del(&f->list);
1977                         kfree(f);
1978                 }
1979
1980                 if (num_del) {
1981                         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, del_list,
1982                                                         num_del, NULL);
1983                         aq_err = hw->aq.asq_last_status;
1984                         num_del = 0;
1985
1986                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1987                                 dev_info(&pf->pdev->dev,
1988                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1989                                          i40e_stat_str(hw, aq_ret),
1990                                          i40e_aq_str(hw, aq_err));
1991                 }
1992
1993                 kfree(del_list);
1994                 del_list = NULL;
1995         }
1996
1997         if (!list_empty(&tmp_add_list)) {
1998                 int add_list_size;
1999
2000                 /* do all the adds now */
2001                 filter_list_len = hw->aq.asq_buf_size /
2002                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2003                 add_list_size = filter_list_len *
2004                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2005                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2006                 if (!add_list) {
2007                         /* Purge element from temporary lists */
2008                         i40e_cleanup_add_list(&tmp_add_list);
2009
2010                         /* Undo add filter entries from VSI MAC filter list */
2011                         spin_lock_bh(&vsi->mac_filter_list_lock);
2012                         i40e_undo_add_filter_entries(vsi);
2013                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2014                         retval = -ENOMEM;
2015                         goto out;
2016                 }
2017
2018                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2019
2020                         add_happened = true;
2021                         cmd_flags = 0;
2022
2023                         /* add to add array */
2024                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2025                         add_list[num_add].vlan_tag =
2026                                 cpu_to_le16(
2027                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2028                         add_list[num_add].queue_number = 0;
2029
2030                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2031                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2032                         num_add++;
2033
2034                         /* flush a full buffer */
2035                         if (num_add == filter_list_len) {
2036                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2037                                                              add_list, num_add,
2038                                                              NULL);
2039                                 aq_err = hw->aq.asq_last_status;
2040                                 num_add = 0;
2041
2042                                 if (aq_ret)
2043                                         break;
2044                                 memset(add_list, 0, add_list_size);
2045                         }
2046                         /* Entries from tmp_add_list were cloned from MAC
2047                          * filter list, hence clean those cloned entries
2048                          */
2049                         list_del(&f->list);
2050                         kfree(f);
2051                 }
2052
2053                 if (num_add) {
2054                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2055                                                      add_list, num_add, NULL);
2056                         aq_err = hw->aq.asq_last_status;
2057                         num_add = 0;
2058                 }
2059                 kfree(add_list);
2060                 add_list = NULL;
2061
2062                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2063                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2064                         dev_info(&pf->pdev->dev,
2065                                  "add filter failed, err %s aq_err %s\n",
2066                                  i40e_stat_str(hw, aq_ret),
2067                                  i40e_aq_str(hw, aq_err));
2068                         if ((hw->aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2069                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2070                                       &vsi->state)) {
2071                                 promisc_forced_on = true;
2072                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2073                                         &vsi->state);
2074                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2075                         }
2076                 }
2077         }
2078
2079         /* if the VF is not trusted do not do promisc */
2080         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2081                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2082                 goto out;
2083         }
2084
2085         /* check for changes in promiscuous modes */
2086         if (changed_flags & IFF_ALLMULTI) {
2087                 bool cur_multipromisc;
2088
2089                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2090                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2091                                                                vsi->seid,
2092                                                                cur_multipromisc,
2093                                                                NULL);
2094                 if (aq_ret) {
2095                         retval = i40e_aq_rc_to_posix(aq_ret,
2096                                                      hw->aq.asq_last_status);
2097                         dev_info(&pf->pdev->dev,
2098                                  "set multi promisc failed, err %s aq_err %s\n",
2099                                  i40e_stat_str(hw, aq_ret),
2100                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2101                 }
2102         }
2103         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2104                 bool cur_promisc;
2105
2106                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2107                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2108                                         &vsi->state));
2109                 if ((vsi->type == I40E_VSI_MAIN) &&
2110                     (pf->lan_veb != I40E_NO_VEB) &&
2111                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2112                         /* set defport ON for Main VSI instead of true promisc
2113                          * this way we will get all unicast/multicast and VLAN
2114                          * promisc behavior but will not get VF or VMDq traffic
2115                          * replicated on the Main VSI.
2116                          */
2117                         if (pf->cur_promisc != cur_promisc) {
2118                                 pf->cur_promisc = cur_promisc;
2119                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2120                         }
2121                 } else {
2122                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2123                                                           hw,
2124                                                           vsi->seid,
2125                                                           cur_promisc, NULL,
2126                                                           true);
2127                         if (aq_ret) {
2128                                 retval =
2129                                 i40e_aq_rc_to_posix(aq_ret,
2130                                                     hw->aq.asq_last_status);
2131                                 dev_info(&pf->pdev->dev,
2132                                          "set unicast promisc failed, err %s, aq_err %s\n",
2133                                          i40e_stat_str(hw, aq_ret),
2134                                          i40e_aq_str(hw,
2135                                                      hw->aq.asq_last_status));
2136                         }
2137                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2138                                                           hw,
2139                                                           vsi->seid,
2140                                                           cur_promisc, NULL);
2141                         if (aq_ret) {
2142                                 retval =
2143                                 i40e_aq_rc_to_posix(aq_ret,
2144                                                     hw->aq.asq_last_status);
2145                                 dev_info(&pf->pdev->dev,
2146                                          "set multicast promisc failed, err %s, aq_err %s\n",
2147                                          i40e_stat_str(hw, aq_ret),
2148                                          i40e_aq_str(hw,
2149                                                      hw->aq.asq_last_status));
2150                         }
2151                 }
2152                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2153                                                    vsi->seid,
2154                                                    cur_promisc, NULL);
2155                 if (aq_ret) {
2156                         retval = i40e_aq_rc_to_posix(aq_ret,
2157                                                      pf->hw.aq.asq_last_status);
2158                         dev_info(&pf->pdev->dev,
2159                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2160                                          i40e_stat_str(hw, aq_ret),
2161                                          i40e_aq_str(hw,
2162                                                      hw->aq.asq_last_status));
2163                 }
2164         }
2165 out:
2166         /* if something went wrong then set the changed flag so we try again */
2167         if (retval)
2168                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2169
2170         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2171         return retval;
2172 }
2173
2174 /**
2175  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2176  * @pf: board private structure
2177  **/
2178 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2179 {
2180         int v;
2181
2182         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2183                 return;
2184         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2185
2186         for (v = 0; v < pf->num_alloc_vsi; v++) {
2187                 if (pf->vsi[v] &&
2188                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2189                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2190
2191                         if (ret) {
2192                                 /* come back and try again later */
2193                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2194                                 break;
2195                         }
2196                 }
2197         }
2198 }
2199
2200 /**
2201  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2202  * @netdev: network interface device structure
2203  * @new_mtu: new value for maximum frame size
2204  *
2205  * Returns 0 on success, negative on failure
2206  **/
2207 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2208 {
2209         struct i40e_netdev_priv *np = netdev_priv(netdev);
2210         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2211         struct i40e_vsi *vsi = np->vsi;
2212
2213         /* MTU < 68 is an error and causes problems on some kernels */
2214         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2215                 return -EINVAL;
2216
2217         netdev_info(netdev, "changing MTU from %d to %d\n",
2218                     netdev->mtu, new_mtu);
2219         netdev->mtu = new_mtu;
2220         if (netif_running(netdev))
2221                 i40e_vsi_reinit_locked(vsi);
2222         i40e_notify_client_of_l2_param_changes(vsi);
2223         return 0;
2224 }
2225
2226 /**
2227  * i40e_ioctl - Access the hwtstamp interface
2228  * @netdev: network interface device structure
2229  * @ifr: interface request data
2230  * @cmd: ioctl command
2231  **/
2232 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2233 {
2234         struct i40e_netdev_priv *np = netdev_priv(netdev);
2235         struct i40e_pf *pf = np->vsi->back;
2236
2237         switch (cmd) {
2238         case SIOCGHWTSTAMP:
2239                 return i40e_ptp_get_ts_config(pf, ifr);
2240         case SIOCSHWTSTAMP:
2241                 return i40e_ptp_set_ts_config(pf, ifr);
2242         default:
2243                 return -EOPNOTSUPP;
2244         }
2245 }
2246
2247 /**
2248  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2249  * @vsi: the vsi being adjusted
2250  **/
2251 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2252 {
2253         struct i40e_vsi_context ctxt;
2254         i40e_status ret;
2255
2256         if ((vsi->info.valid_sections &
2257              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2258             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2259                 return;  /* already enabled */
2260
2261         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2262         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2263                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2264
2265         ctxt.seid = vsi->seid;
2266         ctxt.info = vsi->info;
2267         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2268         if (ret) {
2269                 dev_info(&vsi->back->pdev->dev,
2270                          "update vlan stripping failed, err %s aq_err %s\n",
2271                          i40e_stat_str(&vsi->back->hw, ret),
2272                          i40e_aq_str(&vsi->back->hw,
2273                                      vsi->back->hw.aq.asq_last_status));
2274         }
2275 }
2276
2277 /**
2278  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2279  * @vsi: the vsi being adjusted
2280  **/
2281 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2282 {
2283         struct i40e_vsi_context ctxt;
2284         i40e_status ret;
2285
2286         if ((vsi->info.valid_sections &
2287              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2288             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2289              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2290                 return;  /* already disabled */
2291
2292         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2293         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2294                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2295
2296         ctxt.seid = vsi->seid;
2297         ctxt.info = vsi->info;
2298         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2299         if (ret) {
2300                 dev_info(&vsi->back->pdev->dev,
2301                          "update vlan stripping failed, err %s aq_err %s\n",
2302                          i40e_stat_str(&vsi->back->hw, ret),
2303                          i40e_aq_str(&vsi->back->hw,
2304                                      vsi->back->hw.aq.asq_last_status));
2305         }
2306 }
2307
2308 /**
2309  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2310  * @netdev: network interface to be adjusted
2311  * @features: netdev features to test if VLAN offload is enabled or not
2312  **/
2313 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2314 {
2315         struct i40e_netdev_priv *np = netdev_priv(netdev);
2316         struct i40e_vsi *vsi = np->vsi;
2317
2318         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2319                 i40e_vlan_stripping_enable(vsi);
2320         else
2321                 i40e_vlan_stripping_disable(vsi);
2322 }
2323
2324 /**
2325  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2326  * @vsi: the vsi being configured
2327  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2328  **/
2329 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2330 {
2331         struct i40e_mac_filter *f, *add_f;
2332         bool is_netdev, is_vf;
2333
2334         is_vf = (vsi->type == I40E_VSI_SRIOV);
2335         is_netdev = !!(vsi->netdev);
2336
2337         /* Locked once because all functions invoked below iterates list*/
2338         spin_lock_bh(&vsi->mac_filter_list_lock);
2339
2340         if (is_netdev) {
2341                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2342                                         is_vf, is_netdev);
2343                 if (!add_f) {
2344                         dev_info(&vsi->back->pdev->dev,
2345                                  "Could not add vlan filter %d for %pM\n",
2346                                  vid, vsi->netdev->dev_addr);
2347                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2348                         return -ENOMEM;
2349                 }
2350         }
2351
2352         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2353                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2354                 if (!add_f) {
2355                         dev_info(&vsi->back->pdev->dev,
2356                                  "Could not add vlan filter %d for %pM\n",
2357                                  vid, f->macaddr);
2358                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2359                         return -ENOMEM;
2360                 }
2361         }
2362
2363         /* Now if we add a vlan tag, make sure to check if it is the first
2364          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2365          * with 0, so we now accept untagged and specified tagged traffic
2366          * (and not any taged and untagged)
2367          */
2368         if (vid > 0) {
2369                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2370                                                   I40E_VLAN_ANY,
2371                                                   is_vf, is_netdev)) {
2372                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2373                                         I40E_VLAN_ANY, is_vf, is_netdev);
2374                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2375                                                 is_vf, is_netdev);
2376                         if (!add_f) {
2377                                 dev_info(&vsi->back->pdev->dev,
2378                                          "Could not add filter 0 for %pM\n",
2379                                          vsi->netdev->dev_addr);
2380                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2381                                 return -ENOMEM;
2382                         }
2383                 }
2384         }
2385
2386         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2387         if (vid > 0 && !vsi->info.pvid) {
2388                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2389                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2390                                               is_vf, is_netdev))
2391                                 continue;
2392                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2393                                         is_vf, is_netdev);
2394                         add_f = i40e_add_filter(vsi, f->macaddr,
2395                                                 0, is_vf, is_netdev);
2396                         if (!add_f) {
2397                                 dev_info(&vsi->back->pdev->dev,
2398                                          "Could not add filter 0 for %pM\n",
2399                                         f->macaddr);
2400                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2401                                 return -ENOMEM;
2402                         }
2403                 }
2404         }
2405
2406         spin_unlock_bh(&vsi->mac_filter_list_lock);
2407
2408         /* schedule our worker thread which will take care of
2409          * applying the new filter changes
2410          */
2411         i40e_service_event_schedule(vsi->back);
2412         return 0;
2413 }
2414
2415 /**
2416  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2417  * @vsi: the vsi being configured
2418  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2419  *
2420  * Return: 0 on success or negative otherwise
2421  **/
2422 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2423 {
2424         struct net_device *netdev = vsi->netdev;
2425         struct i40e_mac_filter *f, *add_f;
2426         bool is_vf, is_netdev;
2427         int filter_count = 0;
2428
2429         is_vf = (vsi->type == I40E_VSI_SRIOV);
2430         is_netdev = !!(netdev);
2431
2432         /* Locked once because all functions invoked below iterates list */
2433         spin_lock_bh(&vsi->mac_filter_list_lock);
2434
2435         if (is_netdev)
2436                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2437
2438         list_for_each_entry(f, &vsi->mac_filter_list, list)
2439                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2440
2441         /* go through all the filters for this VSI and if there is only
2442          * vid == 0 it means there are no other filters, so vid 0 must
2443          * be replaced with -1. This signifies that we should from now
2444          * on accept any traffic (with any tag present, or untagged)
2445          */
2446         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2447                 if (is_netdev) {
2448                         if (f->vlan &&
2449                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2450                                 filter_count++;
2451                 }
2452
2453                 if (f->vlan)
2454                         filter_count++;
2455         }
2456
2457         if (!filter_count && is_netdev) {
2458                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2459                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2460                                     is_vf, is_netdev);
2461                 if (!f) {
2462                         dev_info(&vsi->back->pdev->dev,
2463                                  "Could not add filter %d for %pM\n",
2464                                  I40E_VLAN_ANY, netdev->dev_addr);
2465                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2466                         return -ENOMEM;
2467                 }
2468         }
2469
2470         if (!filter_count) {
2471                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2472                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2473                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2474                                                 is_vf, is_netdev);
2475                         if (!add_f) {
2476                                 dev_info(&vsi->back->pdev->dev,
2477                                          "Could not add filter %d for %pM\n",
2478                                          I40E_VLAN_ANY, f->macaddr);
2479                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2480                                 return -ENOMEM;
2481                         }
2482                 }
2483         }
2484
2485         spin_unlock_bh(&vsi->mac_filter_list_lock);
2486
2487         /* schedule our worker thread which will take care of
2488          * applying the new filter changes
2489          */
2490         i40e_service_event_schedule(vsi->back);
2491         return 0;
2492 }
2493
2494 /**
2495  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2496  * @netdev: network interface to be adjusted
2497  * @vid: vlan id to be added
2498  *
2499  * net_device_ops implementation for adding vlan ids
2500  **/
2501 #ifdef I40E_FCOE
2502 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2503                          __always_unused __be16 proto, u16 vid)
2504 #else
2505 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2506                                 __always_unused __be16 proto, u16 vid)
2507 #endif
2508 {
2509         struct i40e_netdev_priv *np = netdev_priv(netdev);
2510         struct i40e_vsi *vsi = np->vsi;
2511         int ret = 0;
2512
2513         if (vid > 4095)
2514                 return -EINVAL;
2515
2516         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2517
2518         /* If the network stack called us with vid = 0 then
2519          * it is asking to receive priority tagged packets with
2520          * vlan id 0.  Our HW receives them by default when configured
2521          * to receive untagged packets so there is no need to add an
2522          * extra filter for vlan 0 tagged packets.
2523          */
2524         if (vid)
2525                 ret = i40e_vsi_add_vlan(vsi, vid);
2526
2527         if (!ret && (vid < VLAN_N_VID))
2528                 set_bit(vid, vsi->active_vlans);
2529
2530         return ret;
2531 }
2532
2533 /**
2534  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2535  * @netdev: network interface to be adjusted
2536  * @vid: vlan id to be removed
2537  *
2538  * net_device_ops implementation for removing vlan ids
2539  **/
2540 #ifdef I40E_FCOE
2541 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2542                           __always_unused __be16 proto, u16 vid)
2543 #else
2544 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2545                                  __always_unused __be16 proto, u16 vid)
2546 #endif
2547 {
2548         struct i40e_netdev_priv *np = netdev_priv(netdev);
2549         struct i40e_vsi *vsi = np->vsi;
2550
2551         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2552
2553         /* return code is ignored as there is nothing a user
2554          * can do about failure to remove and a log message was
2555          * already printed from the other function
2556          */
2557         i40e_vsi_kill_vlan(vsi, vid);
2558
2559         clear_bit(vid, vsi->active_vlans);
2560
2561         return 0;
2562 }
2563
2564 /**
2565  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2566  * @vsi: the vsi being brought back up
2567  **/
2568 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2569 {
2570         u16 vid;
2571
2572         if (!vsi->netdev)
2573                 return;
2574
2575         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2576
2577         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2578                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2579                                      vid);
2580 }
2581
2582 /**
2583  * i40e_vsi_add_pvid - Add pvid for the VSI
2584  * @vsi: the vsi being adjusted
2585  * @vid: the vlan id to set as a PVID
2586  **/
2587 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2588 {
2589         struct i40e_vsi_context ctxt;
2590         i40e_status ret;
2591
2592         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2593         vsi->info.pvid = cpu_to_le16(vid);
2594         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2595                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2596                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2597
2598         ctxt.seid = vsi->seid;
2599         ctxt.info = vsi->info;
2600         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2601         if (ret) {
2602                 dev_info(&vsi->back->pdev->dev,
2603                          "add pvid failed, err %s aq_err %s\n",
2604                          i40e_stat_str(&vsi->back->hw, ret),
2605                          i40e_aq_str(&vsi->back->hw,
2606                                      vsi->back->hw.aq.asq_last_status));
2607                 return -ENOENT;
2608         }
2609
2610         return 0;
2611 }
2612
2613 /**
2614  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2615  * @vsi: the vsi being adjusted
2616  *
2617  * Just use the vlan_rx_register() service to put it back to normal
2618  **/
2619 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2620 {
2621         i40e_vlan_stripping_disable(vsi);
2622
2623         vsi->info.pvid = 0;
2624 }
2625
2626 /**
2627  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2628  * @vsi: ptr to the VSI
2629  *
2630  * If this function returns with an error, then it's possible one or
2631  * more of the rings is populated (while the rest are not).  It is the
2632  * callers duty to clean those orphaned rings.
2633  *
2634  * Return 0 on success, negative on failure
2635  **/
2636 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2637 {
2638         int i, err = 0;
2639
2640         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2641                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2642
2643         return err;
2644 }
2645
2646 /**
2647  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2648  * @vsi: ptr to the VSI
2649  *
2650  * Free VSI's transmit software resources
2651  **/
2652 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2653 {
2654         int i;
2655
2656         if (!vsi->tx_rings)
2657                 return;
2658
2659         for (i = 0; i < vsi->num_queue_pairs; i++)
2660                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2661                         i40e_free_tx_resources(vsi->tx_rings[i]);
2662 }
2663
2664 /**
2665  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2666  * @vsi: ptr to the VSI
2667  *
2668  * If this function returns with an error, then it's possible one or
2669  * more of the rings is populated (while the rest are not).  It is the
2670  * callers duty to clean those orphaned rings.
2671  *
2672  * Return 0 on success, negative on failure
2673  **/
2674 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2675 {
2676         int i, err = 0;
2677
2678         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2679                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2680 #ifdef I40E_FCOE
2681         i40e_fcoe_setup_ddp_resources(vsi);
2682 #endif
2683         return err;
2684 }
2685
2686 /**
2687  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2688  * @vsi: ptr to the VSI
2689  *
2690  * Free all receive software resources
2691  **/
2692 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2693 {
2694         int i;
2695
2696         if (!vsi->rx_rings)
2697                 return;
2698
2699         for (i = 0; i < vsi->num_queue_pairs; i++)
2700                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2701                         i40e_free_rx_resources(vsi->rx_rings[i]);
2702 #ifdef I40E_FCOE
2703         i40e_fcoe_free_ddp_resources(vsi);
2704 #endif
2705 }
2706
2707 /**
2708  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2709  * @ring: The Tx ring to configure
2710  *
2711  * This enables/disables XPS for a given Tx descriptor ring
2712  * based on the TCs enabled for the VSI that ring belongs to.
2713  **/
2714 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2715 {
2716         struct i40e_vsi *vsi = ring->vsi;
2717         cpumask_var_t mask;
2718
2719         if (!ring->q_vector || !ring->netdev)
2720                 return;
2721
2722         /* Single TC mode enable XPS */
2723         if (vsi->tc_config.numtc <= 1) {
2724                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2725                         netif_set_xps_queue(ring->netdev,
2726                                             &ring->q_vector->affinity_mask,
2727                                             ring->queue_index);
2728         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2729                 /* Disable XPS to allow selection based on TC */
2730                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2731                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2732                 free_cpumask_var(mask);
2733         }
2734
2735         /* schedule our worker thread which will take care of
2736          * applying the new filter changes
2737          */
2738         i40e_service_event_schedule(vsi->back);
2739 }
2740
2741 /**
2742  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2743  * @ring: The Tx ring to configure
2744  *
2745  * Configure the Tx descriptor ring in the HMC context.
2746  **/
2747 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2748 {
2749         struct i40e_vsi *vsi = ring->vsi;
2750         u16 pf_q = vsi->base_queue + ring->queue_index;
2751         struct i40e_hw *hw = &vsi->back->hw;
2752         struct i40e_hmc_obj_txq tx_ctx;
2753         i40e_status err = 0;
2754         u32 qtx_ctl = 0;
2755
2756         /* some ATR related tx ring init */
2757         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2758                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2759                 ring->atr_count = 0;
2760         } else {
2761                 ring->atr_sample_rate = 0;
2762         }
2763
2764         /* configure XPS */
2765         i40e_config_xps_tx_ring(ring);
2766
2767         /* clear the context structure first */
2768         memset(&tx_ctx, 0, sizeof(tx_ctx));
2769
2770         tx_ctx.new_context = 1;
2771         tx_ctx.base = (ring->dma / 128);
2772         tx_ctx.qlen = ring->count;
2773         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2774                                                I40E_FLAG_FD_ATR_ENABLED));
2775 #ifdef I40E_FCOE
2776         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2777 #endif
2778         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2779         /* FDIR VSI tx ring can still use RS bit and writebacks */
2780         if (vsi->type != I40E_VSI_FDIR)
2781                 tx_ctx.head_wb_ena = 1;
2782         tx_ctx.head_wb_addr = ring->dma +
2783                               (ring->count * sizeof(struct i40e_tx_desc));
2784
2785         /* As part of VSI creation/update, FW allocates certain
2786          * Tx arbitration queue sets for each TC enabled for
2787          * the VSI. The FW returns the handles to these queue
2788          * sets as part of the response buffer to Add VSI,
2789          * Update VSI, etc. AQ commands. It is expected that
2790          * these queue set handles be associated with the Tx
2791          * queues by the driver as part of the TX queue context
2792          * initialization. This has to be done regardless of
2793          * DCB as by default everything is mapped to TC0.
2794          */
2795         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2796         tx_ctx.rdylist_act = 0;
2797
2798         /* clear the context in the HMC */
2799         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2800         if (err) {
2801                 dev_info(&vsi->back->pdev->dev,
2802                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2803                          ring->queue_index, pf_q, err);
2804                 return -ENOMEM;
2805         }
2806
2807         /* set the context in the HMC */
2808         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2809         if (err) {
2810                 dev_info(&vsi->back->pdev->dev,
2811                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2812                          ring->queue_index, pf_q, err);
2813                 return -ENOMEM;
2814         }
2815
2816         /* Now associate this queue with this PCI function */
2817         if (vsi->type == I40E_VSI_VMDQ2) {
2818                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2819                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2820                            I40E_QTX_CTL_VFVM_INDX_MASK;
2821         } else {
2822                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2823         }
2824
2825         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2826                     I40E_QTX_CTL_PF_INDX_MASK);
2827         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2828         i40e_flush(hw);
2829
2830         /* cache tail off for easier writes later */
2831         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2832
2833         return 0;
2834 }
2835
2836 /**
2837  * i40e_configure_rx_ring - Configure a receive ring context
2838  * @ring: The Rx ring to configure
2839  *
2840  * Configure the Rx descriptor ring in the HMC context.
2841  **/
2842 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2843 {
2844         struct i40e_vsi *vsi = ring->vsi;
2845         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2846         u16 pf_q = vsi->base_queue + ring->queue_index;
2847         struct i40e_hw *hw = &vsi->back->hw;
2848         struct i40e_hmc_obj_rxq rx_ctx;
2849         i40e_status err = 0;
2850
2851         ring->state = 0;
2852
2853         /* clear the context structure first */
2854         memset(&rx_ctx, 0, sizeof(rx_ctx));
2855
2856         ring->rx_buf_len = vsi->rx_buf_len;
2857
2858         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2859
2860         rx_ctx.base = (ring->dma / 128);
2861         rx_ctx.qlen = ring->count;
2862
2863         /* use 32 byte descriptors */
2864         rx_ctx.dsize = 1;
2865
2866         /* descriptor type is always zero
2867          * rx_ctx.dtype = 0;
2868          */
2869         rx_ctx.hsplit_0 = 0;
2870
2871         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2872         if (hw->revision_id == 0)
2873                 rx_ctx.lrxqthresh = 0;
2874         else
2875                 rx_ctx.lrxqthresh = 2;
2876         rx_ctx.crcstrip = 1;
2877         rx_ctx.l2tsel = 1;
2878         /* this controls whether VLAN is stripped from inner headers */
2879         rx_ctx.showiv = 0;
2880 #ifdef I40E_FCOE
2881         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2882 #endif
2883         /* set the prefena field to 1 because the manual says to */
2884         rx_ctx.prefena = 1;
2885
2886         /* clear the context in the HMC */
2887         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2888         if (err) {
2889                 dev_info(&vsi->back->pdev->dev,
2890                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2891                          ring->queue_index, pf_q, err);
2892                 return -ENOMEM;
2893         }
2894
2895         /* set the context in the HMC */
2896         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2897         if (err) {
2898                 dev_info(&vsi->back->pdev->dev,
2899                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2900                          ring->queue_index, pf_q, err);
2901                 return -ENOMEM;
2902         }
2903
2904         /* cache tail for quicker writes, and clear the reg before use */
2905         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2906         writel(0, ring->tail);
2907
2908         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2909
2910         return 0;
2911 }
2912
2913 /**
2914  * i40e_vsi_configure_tx - Configure the VSI for Tx
2915  * @vsi: VSI structure describing this set of rings and resources
2916  *
2917  * Configure the Tx VSI for operation.
2918  **/
2919 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2920 {
2921         int err = 0;
2922         u16 i;
2923
2924         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2925                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2926
2927         return err;
2928 }
2929
2930 /**
2931  * i40e_vsi_configure_rx - Configure the VSI for Rx
2932  * @vsi: the VSI being configured
2933  *
2934  * Configure the Rx VSI for operation.
2935  **/
2936 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2937 {
2938         int err = 0;
2939         u16 i;
2940
2941         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2942                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2943                                + ETH_FCS_LEN + VLAN_HLEN;
2944         else
2945                 vsi->max_frame = I40E_RXBUFFER_2048;
2946
2947         vsi->rx_buf_len = I40E_RXBUFFER_2048;
2948
2949 #ifdef I40E_FCOE
2950         /* setup rx buffer for FCoE */
2951         if ((vsi->type == I40E_VSI_FCOE) &&
2952             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2953                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2954                 vsi->max_frame = I40E_RXBUFFER_3072;
2955         }
2956
2957 #endif /* I40E_FCOE */
2958         /* round up for the chip's needs */
2959         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2960                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2961
2962         /* set up individual rings */
2963         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2964                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2965
2966         return err;
2967 }
2968
2969 /**
2970  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2971  * @vsi: ptr to the VSI
2972  **/
2973 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2974 {
2975         struct i40e_ring *tx_ring, *rx_ring;
2976         u16 qoffset, qcount;
2977         int i, n;
2978
2979         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2980                 /* Reset the TC information */
2981                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2982                         rx_ring = vsi->rx_rings[i];
2983                         tx_ring = vsi->tx_rings[i];
2984                         rx_ring->dcb_tc = 0;
2985                         tx_ring->dcb_tc = 0;
2986                 }
2987         }
2988
2989         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2990                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2991                         continue;
2992
2993                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2994                 qcount = vsi->tc_config.tc_info[n].qcount;
2995                 for (i = qoffset; i < (qoffset + qcount); i++) {
2996                         rx_ring = vsi->rx_rings[i];
2997                         tx_ring = vsi->tx_rings[i];
2998                         rx_ring->dcb_tc = n;
2999                         tx_ring->dcb_tc = n;
3000                 }
3001         }
3002 }
3003
3004 /**
3005  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3006  * @vsi: ptr to the VSI
3007  **/
3008 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3009 {
3010         if (vsi->netdev)
3011                 i40e_set_rx_mode(vsi->netdev);
3012 }
3013
3014 /**
3015  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3016  * @vsi: Pointer to the targeted VSI
3017  *
3018  * This function replays the hlist on the hw where all the SB Flow Director
3019  * filters were saved.
3020  **/
3021 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3022 {
3023         struct i40e_fdir_filter *filter;
3024         struct i40e_pf *pf = vsi->back;
3025         struct hlist_node *node;
3026
3027         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3028                 return;
3029
3030         hlist_for_each_entry_safe(filter, node,
3031                                   &pf->fdir_filter_list, fdir_node) {
3032                 i40e_add_del_fdir(vsi, filter, true);
3033         }
3034 }
3035
3036 /**
3037  * i40e_vsi_configure - Set up the VSI for action
3038  * @vsi: the VSI being configured
3039  **/
3040 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3041 {
3042         int err;
3043
3044         i40e_set_vsi_rx_mode(vsi);
3045         i40e_restore_vlan(vsi);
3046         i40e_vsi_config_dcb_rings(vsi);
3047         err = i40e_vsi_configure_tx(vsi);
3048         if (!err)
3049                 err = i40e_vsi_configure_rx(vsi);
3050
3051         return err;
3052 }
3053
3054 /**
3055  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3056  * @vsi: the VSI being configured
3057  **/
3058 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3059 {
3060         struct i40e_pf *pf = vsi->back;
3061         struct i40e_hw *hw = &pf->hw;
3062         u16 vector;
3063         int i, q;
3064         u32 qp;
3065
3066         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3067          * and PFINT_LNKLSTn registers, e.g.:
3068          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3069          */
3070         qp = vsi->base_queue;
3071         vector = vsi->base_vector;
3072         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3073                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3074
3075                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3076                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3077                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3078                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3079                      q_vector->rx.itr);
3080                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3081                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3082                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3083                      q_vector->tx.itr);
3084                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3085                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3086
3087                 /* Linked list for the queuepairs assigned to this vector */
3088                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3089                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3090                         u32 val;
3091
3092                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3093                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3094                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3095                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3096                               (I40E_QUEUE_TYPE_TX
3097                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3098
3099                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3100
3101                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3102                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3103                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3104                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3105                               (I40E_QUEUE_TYPE_RX
3106                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3107
3108                         /* Terminate the linked list */
3109                         if (q == (q_vector->num_ringpairs - 1))
3110                                 val |= (I40E_QUEUE_END_OF_LIST
3111                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3112
3113                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3114                         qp++;
3115                 }
3116         }
3117
3118         i40e_flush(hw);
3119 }
3120
3121 /**
3122  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3123  * @hw: ptr to the hardware info
3124  **/
3125 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3126 {
3127         struct i40e_hw *hw = &pf->hw;
3128         u32 val;
3129
3130         /* clear things first */
3131         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3132         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3133
3134         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3135               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3136               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3137               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3138               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3139               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3140               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3141               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3142
3143         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3144                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3145
3146         if (pf->flags & I40E_FLAG_PTP)
3147                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3148
3149         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3150
3151         /* SW_ITR_IDX = 0, but don't change INTENA */
3152         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3153                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3154
3155         /* OTHER_ITR_IDX = 0 */
3156         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3157 }
3158
3159 /**
3160  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3161  * @vsi: the VSI being configured
3162  **/
3163 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3164 {
3165         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3166         struct i40e_pf *pf = vsi->back;
3167         struct i40e_hw *hw = &pf->hw;
3168         u32 val;
3169
3170         /* set the ITR configuration */
3171         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3172         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3173         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3174         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3175         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3176         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3177         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3178
3179         i40e_enable_misc_int_causes(pf);
3180
3181         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3182         wr32(hw, I40E_PFINT_LNKLST0, 0);
3183
3184         /* Associate the queue pair to the vector and enable the queue int */
3185         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3186               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3187               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3188
3189         wr32(hw, I40E_QINT_RQCTL(0), val);
3190
3191         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3192               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3193               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3194
3195         wr32(hw, I40E_QINT_TQCTL(0), val);
3196         i40e_flush(hw);
3197 }
3198
3199 /**
3200  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3201  * @pf: board private structure
3202  **/
3203 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3204 {
3205         struct i40e_hw *hw = &pf->hw;
3206
3207         wr32(hw, I40E_PFINT_DYN_CTL0,
3208              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3209         i40e_flush(hw);
3210 }
3211
3212 /**
3213  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3214  * @pf: board private structure
3215  * @clearpba: true when all pending interrupt events should be cleared
3216  **/
3217 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3218 {
3219         struct i40e_hw *hw = &pf->hw;
3220         u32 val;
3221
3222         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3223               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3224               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3225
3226         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3227         i40e_flush(hw);
3228 }
3229
3230 /**
3231  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3232  * @irq: interrupt number
3233  * @data: pointer to a q_vector
3234  **/
3235 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3236 {
3237         struct i40e_q_vector *q_vector = data;
3238
3239         if (!q_vector->tx.ring && !q_vector->rx.ring)
3240                 return IRQ_HANDLED;
3241
3242         napi_schedule_irqoff(&q_vector->napi);
3243
3244         return IRQ_HANDLED;
3245 }
3246
3247 /**
3248  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3249  * @vsi: the VSI being configured
3250  * @basename: name for the vector
3251  *
3252  * Allocates MSI-X vectors and requests interrupts from the kernel.
3253  **/
3254 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3255 {
3256         int q_vectors = vsi->num_q_vectors;
3257         struct i40e_pf *pf = vsi->back;
3258         int base = vsi->base_vector;
3259         int rx_int_idx = 0;
3260         int tx_int_idx = 0;
3261         int vector, err;
3262
3263         for (vector = 0; vector < q_vectors; vector++) {
3264                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3265
3266                 if (q_vector->tx.ring && q_vector->rx.ring) {
3267                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3268                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3269                         tx_int_idx++;
3270                 } else if (q_vector->rx.ring) {
3271                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3272                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3273                 } else if (q_vector->tx.ring) {
3274                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3275                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3276                 } else {
3277                         /* skip this unused q_vector */
3278                         continue;
3279                 }
3280                 err = request_irq(pf->msix_entries[base + vector].vector,
3281                                   vsi->irq_handler,
3282                                   0,
3283                                   q_vector->name,
3284                                   q_vector);
3285                 if (err) {
3286                         dev_info(&pf->pdev->dev,
3287                                  "MSIX request_irq failed, error: %d\n", err);
3288                         goto free_queue_irqs;
3289                 }
3290                 /* assign the mask for this irq */
3291                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3292                                       &q_vector->affinity_mask);
3293         }
3294
3295         vsi->irqs_ready = true;
3296         return 0;
3297
3298 free_queue_irqs:
3299         while (vector) {
3300                 vector--;
3301                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3302                                       NULL);
3303                 free_irq(pf->msix_entries[base + vector].vector,
3304                          &(vsi->q_vectors[vector]));
3305         }
3306         return err;
3307 }
3308
3309 /**
3310  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3311  * @vsi: the VSI being un-configured
3312  **/
3313 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3314 {
3315         struct i40e_pf *pf = vsi->back;
3316         struct i40e_hw *hw = &pf->hw;
3317         int base = vsi->base_vector;
3318         int i;
3319
3320         for (i = 0; i < vsi->num_queue_pairs; i++) {
3321                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3322                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3323         }
3324
3325         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3326                 for (i = vsi->base_vector;
3327                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3328                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3329
3330                 i40e_flush(hw);
3331                 for (i = 0; i < vsi->num_q_vectors; i++)
3332                         synchronize_irq(pf->msix_entries[i + base].vector);
3333         } else {
3334                 /* Legacy and MSI mode - this stops all interrupt handling */
3335                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3336                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3337                 i40e_flush(hw);
3338                 synchronize_irq(pf->pdev->irq);
3339         }
3340 }
3341
3342 /**
3343  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3344  * @vsi: the VSI being configured
3345  **/
3346 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3347 {
3348         struct i40e_pf *pf = vsi->back;
3349         int i;
3350
3351         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3352                 for (i = 0; i < vsi->num_q_vectors; i++)
3353                         i40e_irq_dynamic_enable(vsi, i);
3354         } else {
3355                 i40e_irq_dynamic_enable_icr0(pf, true);
3356         }
3357
3358         i40e_flush(&pf->hw);
3359         return 0;
3360 }
3361
3362 /**
3363  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3364  * @pf: board private structure
3365  **/
3366 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3367 {
3368         /* Disable ICR 0 */
3369         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3370         i40e_flush(&pf->hw);
3371 }
3372
3373 /**
3374  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3375  * @irq: interrupt number
3376  * @data: pointer to a q_vector
3377  *
3378  * This is the handler used for all MSI/Legacy interrupts, and deals
3379  * with both queue and non-queue interrupts.  This is also used in
3380  * MSIX mode to handle the non-queue interrupts.
3381  **/
3382 static irqreturn_t i40e_intr(int irq, void *data)
3383 {
3384         struct i40e_pf *pf = (struct i40e_pf *)data;
3385         struct i40e_hw *hw = &pf->hw;
3386         irqreturn_t ret = IRQ_NONE;
3387         u32 icr0, icr0_remaining;
3388         u32 val, ena_mask;
3389
3390         icr0 = rd32(hw, I40E_PFINT_ICR0);
3391         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3392
3393         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3394         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3395                 goto enable_intr;
3396
3397         /* if interrupt but no bits showing, must be SWINT */
3398         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3399             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3400                 pf->sw_int_count++;
3401
3402         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3403             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3404                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3405                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3406                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3407         }
3408
3409         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3410         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3411                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3412                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3413
3414                 /* We do not have a way to disarm Queue causes while leaving
3415                  * interrupt enabled for all other causes, ideally
3416                  * interrupt should be disabled while we are in NAPI but
3417                  * this is not a performance path and napi_schedule()
3418                  * can deal with rescheduling.
3419                  */
3420                 if (!test_bit(__I40E_DOWN, &pf->state))
3421                         napi_schedule_irqoff(&q_vector->napi);
3422         }
3423
3424         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3425                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3426                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3427                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3428         }
3429
3430         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3431                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3432                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3433         }
3434
3435         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3436                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3437                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3438         }
3439
3440         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3441                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3442                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3443                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3444                 val = rd32(hw, I40E_GLGEN_RSTAT);
3445                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3446                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3447                 if (val == I40E_RESET_CORER) {
3448                         pf->corer_count++;
3449                 } else if (val == I40E_RESET_GLOBR) {
3450                         pf->globr_count++;
3451                 } else if (val == I40E_RESET_EMPR) {
3452                         pf->empr_count++;
3453                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3454                 }
3455         }
3456
3457         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3458                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3459                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3460                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3461                          rd32(hw, I40E_PFHMC_ERRORINFO),
3462                          rd32(hw, I40E_PFHMC_ERRORDATA));
3463         }
3464
3465         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3466                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3467
3468                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3469                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3470                         i40e_ptp_tx_hwtstamp(pf);
3471                 }
3472         }
3473
3474         /* If a critical error is pending we have no choice but to reset the
3475          * device.
3476          * Report and mask out any remaining unexpected interrupts.
3477          */
3478         icr0_remaining = icr0 & ena_mask;
3479         if (icr0_remaining) {
3480                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3481                          icr0_remaining);
3482                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3483                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3484                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3485                         dev_info(&pf->pdev->dev, "device will be reset\n");
3486                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3487                         i40e_service_event_schedule(pf);
3488                 }
3489                 ena_mask &= ~icr0_remaining;
3490         }
3491         ret = IRQ_HANDLED;
3492
3493 enable_intr:
3494         /* re-enable interrupt causes */
3495         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3496         if (!test_bit(__I40E_DOWN, &pf->state)) {
3497                 i40e_service_event_schedule(pf);
3498                 i40e_irq_dynamic_enable_icr0(pf, false);
3499         }
3500
3501         return ret;
3502 }
3503
3504 /**
3505  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3506  * @tx_ring:  tx ring to clean
3507  * @budget:   how many cleans we're allowed
3508  *
3509  * Returns true if there's any budget left (e.g. the clean is finished)
3510  **/
3511 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3512 {
3513         struct i40e_vsi *vsi = tx_ring->vsi;
3514         u16 i = tx_ring->next_to_clean;
3515         struct i40e_tx_buffer *tx_buf;
3516         struct i40e_tx_desc *tx_desc;
3517
3518         tx_buf = &tx_ring->tx_bi[i];
3519         tx_desc = I40E_TX_DESC(tx_ring, i);
3520         i -= tx_ring->count;
3521
3522         do {
3523                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3524
3525                 /* if next_to_watch is not set then there is no work pending */
3526                 if (!eop_desc)
3527                         break;
3528
3529                 /* prevent any other reads prior to eop_desc */
3530                 read_barrier_depends();
3531
3532                 /* if the descriptor isn't done, no work yet to do */
3533                 if (!(eop_desc->cmd_type_offset_bsz &
3534                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3535                         break;
3536
3537                 /* clear next_to_watch to prevent false hangs */
3538                 tx_buf->next_to_watch = NULL;
3539
3540                 tx_desc->buffer_addr = 0;
3541                 tx_desc->cmd_type_offset_bsz = 0;
3542                 /* move past filter desc */
3543                 tx_buf++;
3544                 tx_desc++;
3545                 i++;
3546                 if (unlikely(!i)) {
3547                         i -= tx_ring->count;
3548                         tx_buf = tx_ring->tx_bi;
3549                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3550                 }
3551                 /* unmap skb header data */
3552                 dma_unmap_single(tx_ring->dev,
3553                                  dma_unmap_addr(tx_buf, dma),
3554                                  dma_unmap_len(tx_buf, len),
3555                                  DMA_TO_DEVICE);
3556                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3557                         kfree(tx_buf->raw_buf);
3558
3559                 tx_buf->raw_buf = NULL;
3560                 tx_buf->tx_flags = 0;
3561                 tx_buf->next_to_watch = NULL;
3562                 dma_unmap_len_set(tx_buf, len, 0);
3563                 tx_desc->buffer_addr = 0;
3564                 tx_desc->cmd_type_offset_bsz = 0;
3565
3566                 /* move us past the eop_desc for start of next FD desc */
3567                 tx_buf++;
3568                 tx_desc++;
3569                 i++;
3570                 if (unlikely(!i)) {
3571                         i -= tx_ring->count;
3572                         tx_buf = tx_ring->tx_bi;
3573                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3574                 }
3575
3576                 /* update budget accounting */
3577                 budget--;
3578         } while (likely(budget));
3579
3580         i += tx_ring->count;
3581         tx_ring->next_to_clean = i;
3582
3583         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3584                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3585
3586         return budget > 0;
3587 }
3588
3589 /**
3590  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3591  * @irq: interrupt number
3592  * @data: pointer to a q_vector
3593  **/
3594 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3595 {
3596         struct i40e_q_vector *q_vector = data;
3597         struct i40e_vsi *vsi;
3598
3599         if (!q_vector->tx.ring)
3600                 return IRQ_HANDLED;
3601
3602         vsi = q_vector->tx.ring->vsi;
3603         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3604
3605         return IRQ_HANDLED;
3606 }
3607
3608 /**
3609  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3610  * @vsi: the VSI being configured
3611  * @v_idx: vector index
3612  * @qp_idx: queue pair index
3613  **/
3614 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3615 {
3616         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3617         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3618         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3619
3620         tx_ring->q_vector = q_vector;
3621         tx_ring->next = q_vector->tx.ring;
3622         q_vector->tx.ring = tx_ring;
3623         q_vector->tx.count++;
3624
3625         rx_ring->q_vector = q_vector;
3626         rx_ring->next = q_vector->rx.ring;
3627         q_vector->rx.ring = rx_ring;
3628         q_vector->rx.count++;
3629 }
3630
3631 /**
3632  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3633  * @vsi: the VSI being configured
3634  *
3635  * This function maps descriptor rings to the queue-specific vectors
3636  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3637  * one vector per queue pair, but on a constrained vector budget, we
3638  * group the queue pairs as "efficiently" as possible.
3639  **/
3640 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3641 {
3642         int qp_remaining = vsi->num_queue_pairs;
3643         int q_vectors = vsi->num_q_vectors;
3644         int num_ringpairs;
3645         int v_start = 0;
3646         int qp_idx = 0;
3647
3648         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3649          * group them so there are multiple queues per vector.
3650          * It is also important to go through all the vectors available to be
3651          * sure that if we don't use all the vectors, that the remaining vectors
3652          * are cleared. This is especially important when decreasing the
3653          * number of queues in use.
3654          */
3655         for (; v_start < q_vectors; v_start++) {
3656                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3657
3658                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3659
3660                 q_vector->num_ringpairs = num_ringpairs;
3661
3662                 q_vector->rx.count = 0;
3663                 q_vector->tx.count = 0;
3664                 q_vector->rx.ring = NULL;
3665                 q_vector->tx.ring = NULL;
3666
3667                 while (num_ringpairs--) {
3668                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3669                         qp_idx++;
3670                         qp_remaining--;
3671                 }
3672         }
3673 }
3674
3675 /**
3676  * i40e_vsi_request_irq - Request IRQ from the OS
3677  * @vsi: the VSI being configured
3678  * @basename: name for the vector
3679  **/
3680 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3681 {
3682         struct i40e_pf *pf = vsi->back;
3683         int err;
3684
3685         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3686                 err = i40e_vsi_request_irq_msix(vsi, basename);
3687         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3688                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3689                                   pf->int_name, pf);
3690         else
3691                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3692                                   pf->int_name, pf);
3693
3694         if (err)
3695                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3696
3697         return err;
3698 }
3699
3700 #ifdef CONFIG_NET_POLL_CONTROLLER
3701 /**
3702  * i40e_netpoll - A Polling 'interrupt' handler
3703  * @netdev: network interface device structure
3704  *
3705  * This is used by netconsole to send skbs without having to re-enable
3706  * interrupts.  It's not called while the normal interrupt routine is executing.
3707  **/
3708 #ifdef I40E_FCOE
3709 void i40e_netpoll(struct net_device *netdev)
3710 #else
3711 static void i40e_netpoll(struct net_device *netdev)
3712 #endif
3713 {
3714         struct i40e_netdev_priv *np = netdev_priv(netdev);
3715         struct i40e_vsi *vsi = np->vsi;
3716         struct i40e_pf *pf = vsi->back;
3717         int i;
3718
3719         /* if interface is down do nothing */
3720         if (test_bit(__I40E_DOWN, &vsi->state))
3721                 return;
3722
3723         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3724                 for (i = 0; i < vsi->num_q_vectors; i++)
3725                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3726         } else {
3727                 i40e_intr(pf->pdev->irq, netdev);
3728         }
3729 }
3730 #endif
3731
3732 /**
3733  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3734  * @pf: the PF being configured
3735  * @pf_q: the PF queue
3736  * @enable: enable or disable state of the queue
3737  *
3738  * This routine will wait for the given Tx queue of the PF to reach the
3739  * enabled or disabled state.
3740  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3741  * multiple retries; else will return 0 in case of success.
3742  **/
3743 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3744 {
3745         int i;
3746         u32 tx_reg;
3747
3748         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3749                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3750                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3751                         break;
3752
3753                 usleep_range(10, 20);
3754         }
3755         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3756                 return -ETIMEDOUT;
3757
3758         return 0;
3759 }
3760
3761 /**
3762  * i40e_vsi_control_tx - Start or stop a VSI's rings
3763  * @vsi: the VSI being configured
3764  * @enable: start or stop the rings
3765  **/
3766 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3767 {
3768         struct i40e_pf *pf = vsi->back;
3769         struct i40e_hw *hw = &pf->hw;
3770         int i, j, pf_q, ret = 0;
3771         u32 tx_reg;
3772
3773         pf_q = vsi->base_queue;
3774         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3775
3776                 /* warn the TX unit of coming changes */
3777                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3778                 if (!enable)
3779                         usleep_range(10, 20);
3780
3781                 for (j = 0; j < 50; j++) {
3782                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3783                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3784                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3785                                 break;
3786                         usleep_range(1000, 2000);
3787                 }
3788                 /* Skip if the queue is already in the requested state */
3789                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3790                         continue;
3791
3792                 /* turn on/off the queue */
3793                 if (enable) {
3794                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3795                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3796                 } else {
3797                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3798                 }
3799
3800                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3801                 /* No waiting for the Tx queue to disable */
3802                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3803                         continue;
3804
3805                 /* wait for the change to finish */
3806                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3807                 if (ret) {
3808                         dev_info(&pf->pdev->dev,
3809                                  "VSI seid %d Tx ring %d %sable timeout\n",
3810                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3811                         break;
3812                 }
3813         }
3814
3815         if (hw->revision_id == 0)
3816                 mdelay(50);
3817         return ret;
3818 }
3819
3820 /**
3821  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3822  * @pf: the PF being configured
3823  * @pf_q: the PF queue
3824  * @enable: enable or disable state of the queue
3825  *
3826  * This routine will wait for the given Rx queue of the PF to reach the
3827  * enabled or disabled state.
3828  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3829  * multiple retries; else will return 0 in case of success.
3830  **/
3831 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3832 {
3833         int i;
3834         u32 rx_reg;
3835
3836         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3837                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3838                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3839                         break;
3840
3841                 usleep_range(10, 20);
3842         }
3843         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3844                 return -ETIMEDOUT;
3845
3846         return 0;
3847 }
3848
3849 /**
3850  * i40e_vsi_control_rx - Start or stop a VSI's rings
3851  * @vsi: the VSI being configured
3852  * @enable: start or stop the rings
3853  **/
3854 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3855 {
3856         struct i40e_pf *pf = vsi->back;
3857         struct i40e_hw *hw = &pf->hw;
3858         int i, j, pf_q, ret = 0;
3859         u32 rx_reg;
3860
3861         pf_q = vsi->base_queue;
3862         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3863                 for (j = 0; j < 50; j++) {
3864                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3865                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3866                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3867                                 break;
3868                         usleep_range(1000, 2000);
3869                 }
3870
3871                 /* Skip if the queue is already in the requested state */
3872                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3873                         continue;
3874
3875                 /* turn on/off the queue */
3876                 if (enable)
3877                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3878                 else
3879                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3880                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3881                 /* No waiting for the Tx queue to disable */
3882                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3883                         continue;
3884
3885                 /* wait for the change to finish */
3886                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3887                 if (ret) {
3888                         dev_info(&pf->pdev->dev,
3889                                  "VSI seid %d Rx ring %d %sable timeout\n",
3890                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3891                         break;
3892                 }
3893         }
3894
3895         return ret;
3896 }
3897
3898 /**
3899  * i40e_vsi_control_rings - Start or stop a VSI's rings
3900  * @vsi: the VSI being configured
3901  * @enable: start or stop the rings
3902  **/
3903 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3904 {
3905         int ret = 0;
3906
3907         /* do rx first for enable and last for disable */
3908         if (request) {
3909                 ret = i40e_vsi_control_rx(vsi, request);
3910                 if (ret)
3911                         return ret;
3912                 ret = i40e_vsi_control_tx(vsi, request);
3913         } else {
3914                 /* Ignore return value, we need to shutdown whatever we can */
3915                 i40e_vsi_control_tx(vsi, request);
3916                 i40e_vsi_control_rx(vsi, request);
3917         }
3918
3919         return ret;
3920 }
3921
3922 /**
3923  * i40e_vsi_free_irq - Free the irq association with the OS
3924  * @vsi: the VSI being configured
3925  **/
3926 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3927 {
3928         struct i40e_pf *pf = vsi->back;
3929         struct i40e_hw *hw = &pf->hw;
3930         int base = vsi->base_vector;
3931         u32 val, qp;
3932         int i;
3933
3934         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3935                 if (!vsi->q_vectors)
3936                         return;
3937
3938                 if (!vsi->irqs_ready)
3939                         return;
3940
3941                 vsi->irqs_ready = false;
3942                 for (i = 0; i < vsi->num_q_vectors; i++) {
3943                         u16 vector = i + base;
3944
3945                         /* free only the irqs that were actually requested */
3946                         if (!vsi->q_vectors[i] ||
3947                             !vsi->q_vectors[i]->num_ringpairs)
3948                                 continue;
3949
3950                         /* clear the affinity_mask in the IRQ descriptor */
3951                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3952                                               NULL);
3953                         free_irq(pf->msix_entries[vector].vector,
3954                                  vsi->q_vectors[i]);
3955
3956                         /* Tear down the interrupt queue link list
3957                          *
3958                          * We know that they come in pairs and always
3959                          * the Rx first, then the Tx.  To clear the
3960                          * link list, stick the EOL value into the
3961                          * next_q field of the registers.
3962                          */
3963                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3964                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3965                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3966                         val |= I40E_QUEUE_END_OF_LIST
3967                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3968                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3969
3970                         while (qp != I40E_QUEUE_END_OF_LIST) {
3971                                 u32 next;
3972
3973                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3974
3975                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3976                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3977                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3978                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3979
3980                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3981                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3982
3983                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3984
3985                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3986
3987                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3988                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3989
3990                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3991                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3992                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3993                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3994
3995                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3996                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3997
3998                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3999                                 qp = next;
4000                         }
4001                 }
4002         } else {
4003                 free_irq(pf->pdev->irq, pf);
4004
4005                 val = rd32(hw, I40E_PFINT_LNKLST0);
4006                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4007                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4008                 val |= I40E_QUEUE_END_OF_LIST
4009                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4010                 wr32(hw, I40E_PFINT_LNKLST0, val);
4011
4012                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4013                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4014                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4015                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4016                          I40E_QINT_RQCTL_INTEVENT_MASK);
4017
4018                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4019                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4020
4021                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4022
4023                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4024
4025                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4026                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4027                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4028                          I40E_QINT_TQCTL_INTEVENT_MASK);
4029
4030                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4031                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4032
4033                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4034         }
4035 }
4036
4037 /**
4038  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4039  * @vsi: the VSI being configured
4040  * @v_idx: Index of vector to be freed
4041  *
4042  * This function frees the memory allocated to the q_vector.  In addition if
4043  * NAPI is enabled it will delete any references to the NAPI struct prior
4044  * to freeing the q_vector.
4045  **/
4046 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4047 {
4048         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4049         struct i40e_ring *ring;
4050
4051         if (!q_vector)
4052                 return;
4053
4054         /* disassociate q_vector from rings */
4055         i40e_for_each_ring(ring, q_vector->tx)
4056                 ring->q_vector = NULL;
4057
4058         i40e_for_each_ring(ring, q_vector->rx)
4059                 ring->q_vector = NULL;
4060
4061         /* only VSI w/ an associated netdev is set up w/ NAPI */
4062         if (vsi->netdev)
4063                 netif_napi_del(&q_vector->napi);
4064
4065         vsi->q_vectors[v_idx] = NULL;
4066
4067         kfree_rcu(q_vector, rcu);
4068 }
4069
4070 /**
4071  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4072  * @vsi: the VSI being un-configured
4073  *
4074  * This frees the memory allocated to the q_vectors and
4075  * deletes references to the NAPI struct.
4076  **/
4077 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4078 {
4079         int v_idx;
4080
4081         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4082                 i40e_free_q_vector(vsi, v_idx);
4083 }
4084
4085 /**
4086  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4087  * @pf: board private structure
4088  **/
4089 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4090 {
4091         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4092         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4093                 pci_disable_msix(pf->pdev);
4094                 kfree(pf->msix_entries);
4095                 pf->msix_entries = NULL;
4096                 kfree(pf->irq_pile);
4097                 pf->irq_pile = NULL;
4098         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4099                 pci_disable_msi(pf->pdev);
4100         }
4101         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4102 }
4103
4104 /**
4105  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4106  * @pf: board private structure
4107  *
4108  * We go through and clear interrupt specific resources and reset the structure
4109  * to pre-load conditions
4110  **/
4111 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4112 {
4113         int i;
4114
4115         i40e_stop_misc_vector(pf);
4116         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4117                 synchronize_irq(pf->msix_entries[0].vector);
4118                 free_irq(pf->msix_entries[0].vector, pf);
4119         }
4120
4121         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4122                       I40E_IWARP_IRQ_PILE_ID);
4123
4124         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4125         for (i = 0; i < pf->num_alloc_vsi; i++)
4126                 if (pf->vsi[i])
4127                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4128         i40e_reset_interrupt_capability(pf);
4129 }
4130
4131 /**
4132  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4133  * @vsi: the VSI being configured
4134  **/
4135 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4136 {
4137         int q_idx;
4138
4139         if (!vsi->netdev)
4140                 return;
4141
4142         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4143                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4144 }
4145
4146 /**
4147  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4148  * @vsi: the VSI being configured
4149  **/
4150 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4151 {
4152         int q_idx;
4153
4154         if (!vsi->netdev)
4155                 return;
4156
4157         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4158                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4159 }
4160
4161 /**
4162  * i40e_vsi_close - Shut down a VSI
4163  * @vsi: the vsi to be quelled
4164  **/
4165 static void i40e_vsi_close(struct i40e_vsi *vsi)
4166 {
4167         bool reset = false;
4168
4169         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4170                 i40e_down(vsi);
4171         i40e_vsi_free_irq(vsi);
4172         i40e_vsi_free_tx_resources(vsi);
4173         i40e_vsi_free_rx_resources(vsi);
4174         vsi->current_netdev_flags = 0;
4175         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4176                 reset = true;
4177         i40e_notify_client_of_netdev_close(vsi, reset);
4178 }
4179
4180 /**
4181  * i40e_quiesce_vsi - Pause a given VSI
4182  * @vsi: the VSI being paused
4183  **/
4184 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4185 {
4186         if (test_bit(__I40E_DOWN, &vsi->state))
4187                 return;
4188
4189         /* No need to disable FCoE VSI when Tx suspended */
4190         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4191             vsi->type == I40E_VSI_FCOE) {
4192                 dev_dbg(&vsi->back->pdev->dev,
4193                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4194                 return;
4195         }
4196
4197         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4198         if (vsi->netdev && netif_running(vsi->netdev))
4199                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4200         else
4201                 i40e_vsi_close(vsi);
4202 }
4203
4204 /**
4205  * i40e_unquiesce_vsi - Resume a given VSI
4206  * @vsi: the VSI being resumed
4207  **/
4208 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4209 {
4210         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4211                 return;
4212
4213         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4214         if (vsi->netdev && netif_running(vsi->netdev))
4215                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4216         else
4217                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4218 }
4219
4220 /**
4221  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4222  * @pf: the PF
4223  **/
4224 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4225 {
4226         int v;
4227
4228         for (v = 0; v < pf->num_alloc_vsi; v++) {
4229                 if (pf->vsi[v])
4230                         i40e_quiesce_vsi(pf->vsi[v]);
4231         }
4232 }
4233
4234 /**
4235  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4236  * @pf: the PF
4237  **/
4238 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4239 {
4240         int v;
4241
4242         for (v = 0; v < pf->num_alloc_vsi; v++) {
4243                 if (pf->vsi[v])
4244                         i40e_unquiesce_vsi(pf->vsi[v]);
4245         }
4246 }
4247
4248 #ifdef CONFIG_I40E_DCB
4249 /**
4250  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4251  * @vsi: the VSI being configured
4252  *
4253  * This function waits for the given VSI's queues to be disabled.
4254  **/
4255 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4256 {
4257         struct i40e_pf *pf = vsi->back;
4258         int i, pf_q, ret;
4259
4260         pf_q = vsi->base_queue;
4261         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4262                 /* Check and wait for the disable status of the queue */
4263                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4264                 if (ret) {
4265                         dev_info(&pf->pdev->dev,
4266                                  "VSI seid %d Tx ring %d disable timeout\n",
4267                                  vsi->seid, pf_q);
4268                         return ret;
4269                 }
4270         }
4271
4272         pf_q = vsi->base_queue;
4273         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4274                 /* Check and wait for the disable status of the queue */
4275                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4276                 if (ret) {
4277                         dev_info(&pf->pdev->dev,
4278                                  "VSI seid %d Rx ring %d disable timeout\n",
4279                                  vsi->seid, pf_q);
4280                         return ret;
4281                 }
4282         }
4283
4284         return 0;
4285 }
4286
4287 /**
4288  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4289  * @pf: the PF
4290  *
4291  * This function waits for the queues to be in disabled state for all the
4292  * VSIs that are managed by this PF.
4293  **/
4294 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4295 {
4296         int v, ret = 0;
4297
4298         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4299                 /* No need to wait for FCoE VSI queues */
4300                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4301                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4302                         if (ret)
4303                                 break;
4304                 }
4305         }
4306
4307         return ret;
4308 }
4309
4310 #endif
4311
4312 /**
4313  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4314  * @q_idx: TX queue number
4315  * @vsi: Pointer to VSI struct
4316  *
4317  * This function checks specified queue for given VSI. Detects hung condition.
4318  * Sets hung bit since it is two step process. Before next run of service task
4319  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4320  * hung condition remain unchanged and during subsequent run, this function
4321  * issues SW interrupt to recover from hung condition.
4322  **/
4323 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4324 {
4325         struct i40e_ring *tx_ring = NULL;
4326         struct i40e_pf  *pf;
4327         u32 head, val, tx_pending_hw;
4328         int i;
4329
4330         pf = vsi->back;
4331
4332         /* now that we have an index, find the tx_ring struct */
4333         for (i = 0; i < vsi->num_queue_pairs; i++) {
4334                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4335                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4336                                 tx_ring = vsi->tx_rings[i];
4337                                 break;
4338                         }
4339                 }
4340         }
4341
4342         if (!tx_ring)
4343                 return;
4344
4345         /* Read interrupt register */
4346         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4347                 val = rd32(&pf->hw,
4348                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4349                                                tx_ring->vsi->base_vector - 1));
4350         else
4351                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4352
4353         head = i40e_get_head(tx_ring);
4354
4355         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4356
4357         /* HW is done executing descriptors, updated HEAD write back,
4358          * but SW hasn't processed those descriptors. If interrupt is
4359          * not generated from this point ON, it could result into
4360          * dev_watchdog detecting timeout on those netdev_queue,
4361          * hence proactively trigger SW interrupt.
4362          */
4363         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4364                 /* NAPI Poll didn't run and clear since it was set */
4365                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4366                                        &tx_ring->q_vector->hung_detected)) {
4367                         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",
4368                                     vsi->seid, q_idx, tx_pending_hw,
4369                                     tx_ring->next_to_clean, head,
4370                                     tx_ring->next_to_use,
4371                                     readl(tx_ring->tail));
4372                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4373                                     vsi->seid, q_idx, val);
4374                         i40e_force_wb(vsi, tx_ring->q_vector);
4375                 } else {
4376                         /* First Chance - detected possible hung */
4377                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4378                                 &tx_ring->q_vector->hung_detected);
4379                 }
4380         }
4381
4382         /* This is the case where we have interrupts missing,
4383          * so the tx_pending in HW will most likely be 0, but we
4384          * will have tx_pending in SW since the WB happened but the
4385          * interrupt got lost.
4386          */
4387         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4388             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4389                 if (napi_reschedule(&tx_ring->q_vector->napi))
4390                         tx_ring->tx_stats.tx_lost_interrupt++;
4391         }
4392 }
4393
4394 /**
4395  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4396  * @pf:  pointer to PF struct
4397  *
4398  * LAN VSI has netdev and netdev has TX queues. This function is to check
4399  * each of those TX queues if they are hung, trigger recovery by issuing
4400  * SW interrupt.
4401  **/
4402 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4403 {
4404         struct net_device *netdev;
4405         struct i40e_vsi *vsi;
4406         int i;
4407
4408         /* Only for LAN VSI */
4409         vsi = pf->vsi[pf->lan_vsi];
4410
4411         if (!vsi)
4412                 return;
4413
4414         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4415         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4416             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4417                 return;
4418
4419         /* Make sure type is MAIN VSI */
4420         if (vsi->type != I40E_VSI_MAIN)
4421                 return;
4422
4423         netdev = vsi->netdev;
4424         if (!netdev)
4425                 return;
4426
4427         /* Bail out if netif_carrier is not OK */
4428         if (!netif_carrier_ok(netdev))
4429                 return;
4430
4431         /* Go thru' TX queues for netdev */
4432         for (i = 0; i < netdev->num_tx_queues; i++) {
4433                 struct netdev_queue *q;
4434
4435                 q = netdev_get_tx_queue(netdev, i);
4436                 if (q)
4437                         i40e_detect_recover_hung_queue(i, vsi);
4438         }
4439 }
4440
4441 /**
4442  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4443  * @pf: pointer to PF
4444  *
4445  * Get TC map for ISCSI PF type that will include iSCSI TC
4446  * and LAN TC.
4447  **/
4448 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4449 {
4450         struct i40e_dcb_app_priority_table app;
4451         struct i40e_hw *hw = &pf->hw;
4452         u8 enabled_tc = 1; /* TC0 is always enabled */
4453         u8 tc, i;
4454         /* Get the iSCSI APP TLV */
4455         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4456
4457         for (i = 0; i < dcbcfg->numapps; i++) {
4458                 app = dcbcfg->app[i];
4459                 if (app.selector == I40E_APP_SEL_TCPIP &&
4460                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4461                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4462                         enabled_tc |= BIT(tc);
4463                         break;
4464                 }
4465         }
4466
4467         return enabled_tc;
4468 }
4469
4470 /**
4471  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4472  * @dcbcfg: the corresponding DCBx configuration structure
4473  *
4474  * Return the number of TCs from given DCBx configuration
4475  **/
4476 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4477 {
4478         u8 num_tc = 0;
4479         int i;
4480
4481         /* Scan the ETS Config Priority Table to find
4482          * traffic class enabled for a given priority
4483          * and use the traffic class index to get the
4484          * number of traffic classes enabled
4485          */
4486         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4487                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4488                         num_tc = dcbcfg->etscfg.prioritytable[i];
4489         }
4490
4491         /* Traffic class index starts from zero so
4492          * increment to return the actual count
4493          */
4494         return num_tc + 1;
4495 }
4496
4497 /**
4498  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4499  * @dcbcfg: the corresponding DCBx configuration structure
4500  *
4501  * Query the current DCB configuration and return the number of
4502  * traffic classes enabled from the given DCBX config
4503  **/
4504 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4505 {
4506         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4507         u8 enabled_tc = 1;
4508         u8 i;
4509
4510         for (i = 0; i < num_tc; i++)
4511                 enabled_tc |= BIT(i);
4512
4513         return enabled_tc;
4514 }
4515
4516 /**
4517  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4518  * @pf: PF being queried
4519  *
4520  * Return number of traffic classes enabled for the given PF
4521  **/
4522 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4523 {
4524         struct i40e_hw *hw = &pf->hw;
4525         u8 i, enabled_tc;
4526         u8 num_tc = 0;
4527         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4528
4529         /* If DCB is not enabled then always in single TC */
4530         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4531                 return 1;
4532
4533         /* SFP mode will be enabled for all TCs on port */
4534         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4535                 return i40e_dcb_get_num_tc(dcbcfg);
4536
4537         /* MFP mode return count of enabled TCs for this PF */
4538         if (pf->hw.func_caps.iscsi)
4539                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4540         else
4541                 return 1; /* Only TC0 */
4542
4543         /* At least have TC0 */
4544         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4545         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4546                 if (enabled_tc & BIT(i))
4547                         num_tc++;
4548         }
4549         return num_tc;
4550 }
4551
4552 /**
4553  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4554  * @pf: PF being queried
4555  *
4556  * Return a bitmap for first enabled traffic class for this PF.
4557  **/
4558 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4559 {
4560         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4561         u8 i = 0;
4562
4563         if (!enabled_tc)
4564                 return 0x1; /* TC0 */
4565
4566         /* Find the first enabled TC */
4567         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4568                 if (enabled_tc & BIT(i))
4569                         break;
4570         }
4571
4572         return BIT(i);
4573 }
4574
4575 /**
4576  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4577  * @pf: PF being queried
4578  *
4579  * Return a bitmap for enabled traffic classes for this PF.
4580  **/
4581 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4582 {
4583         /* If DCB is not enabled for this PF then just return default TC */
4584         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4585                 return i40e_pf_get_default_tc(pf);
4586
4587         /* SFP mode we want PF to be enabled for all TCs */
4588         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4589                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4590
4591         /* MFP enabled and iSCSI PF type */
4592         if (pf->hw.func_caps.iscsi)
4593                 return i40e_get_iscsi_tc_map(pf);
4594         else
4595                 return i40e_pf_get_default_tc(pf);
4596 }
4597
4598 /**
4599  * i40e_vsi_get_bw_info - Query VSI BW Information
4600  * @vsi: the VSI being queried
4601  *
4602  * Returns 0 on success, negative value on failure
4603  **/
4604 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4605 {
4606         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4607         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4608         struct i40e_pf *pf = vsi->back;
4609         struct i40e_hw *hw = &pf->hw;
4610         i40e_status ret;
4611         u32 tc_bw_max;
4612         int i;
4613
4614         /* Get the VSI level BW configuration */
4615         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4616         if (ret) {
4617                 dev_info(&pf->pdev->dev,
4618                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4619                          i40e_stat_str(&pf->hw, ret),
4620                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4621                 return -EINVAL;
4622         }
4623
4624         /* Get the VSI level BW configuration per TC */
4625         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4626                                                NULL);
4627         if (ret) {
4628                 dev_info(&pf->pdev->dev,
4629                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4630                          i40e_stat_str(&pf->hw, ret),
4631                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4632                 return -EINVAL;
4633         }
4634
4635         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4636                 dev_info(&pf->pdev->dev,
4637                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4638                          bw_config.tc_valid_bits,
4639                          bw_ets_config.tc_valid_bits);
4640                 /* Still continuing */
4641         }
4642
4643         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4644         vsi->bw_max_quanta = bw_config.max_bw;
4645         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4646                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4647         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4648                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4649                 vsi->bw_ets_limit_credits[i] =
4650                                         le16_to_cpu(bw_ets_config.credits[i]);
4651                 /* 3 bits out of 4 for each TC */
4652                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4653         }
4654
4655         return 0;
4656 }
4657
4658 /**
4659  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4660  * @vsi: the VSI being configured
4661  * @enabled_tc: TC bitmap
4662  * @bw_credits: BW shared credits per TC
4663  *
4664  * Returns 0 on success, negative value on failure
4665  **/
4666 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4667                                        u8 *bw_share)
4668 {
4669         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4670         i40e_status ret;
4671         int i;
4672
4673         bw_data.tc_valid_bits = enabled_tc;
4674         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4675                 bw_data.tc_bw_credits[i] = bw_share[i];
4676
4677         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4678                                        NULL);
4679         if (ret) {
4680                 dev_info(&vsi->back->pdev->dev,
4681                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4682                          vsi->back->hw.aq.asq_last_status);
4683                 return -EINVAL;
4684         }
4685
4686         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4687                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4688
4689         return 0;
4690 }
4691
4692 /**
4693  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4694  * @vsi: the VSI being configured
4695  * @enabled_tc: TC map to be enabled
4696  *
4697  **/
4698 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4699 {
4700         struct net_device *netdev = vsi->netdev;
4701         struct i40e_pf *pf = vsi->back;
4702         struct i40e_hw *hw = &pf->hw;
4703         u8 netdev_tc = 0;
4704         int i;
4705         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4706
4707         if (!netdev)
4708                 return;
4709
4710         if (!enabled_tc) {
4711                 netdev_reset_tc(netdev);
4712                 return;
4713         }
4714
4715         /* Set up actual enabled TCs on the VSI */
4716         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4717                 return;
4718
4719         /* set per TC queues for the VSI */
4720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4721                 /* Only set TC queues for enabled tcs
4722                  *
4723                  * e.g. For a VSI that has TC0 and TC3 enabled the
4724                  * enabled_tc bitmap would be 0x00001001; the driver
4725                  * will set the numtc for netdev as 2 that will be
4726                  * referenced by the netdev layer as TC 0 and 1.
4727                  */
4728                 if (vsi->tc_config.enabled_tc & BIT(i))
4729                         netdev_set_tc_queue(netdev,
4730                                         vsi->tc_config.tc_info[i].netdev_tc,
4731                                         vsi->tc_config.tc_info[i].qcount,
4732                                         vsi->tc_config.tc_info[i].qoffset);
4733         }
4734
4735         /* Assign UP2TC map for the VSI */
4736         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4737                 /* Get the actual TC# for the UP */
4738                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4739                 /* Get the mapped netdev TC# for the UP */
4740                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4741                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4742         }
4743 }
4744
4745 /**
4746  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4747  * @vsi: the VSI being configured
4748  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4749  **/
4750 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4751                                       struct i40e_vsi_context *ctxt)
4752 {
4753         /* copy just the sections touched not the entire info
4754          * since not all sections are valid as returned by
4755          * update vsi params
4756          */
4757         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4758         memcpy(&vsi->info.queue_mapping,
4759                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4760         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4761                sizeof(vsi->info.tc_mapping));
4762 }
4763
4764 /**
4765  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4766  * @vsi: VSI to be configured
4767  * @enabled_tc: TC bitmap
4768  *
4769  * This configures a particular VSI for TCs that are mapped to the
4770  * given TC bitmap. It uses default bandwidth share for TCs across
4771  * VSIs to configure TC for a particular VSI.
4772  *
4773  * NOTE:
4774  * It is expected that the VSI queues have been quisced before calling
4775  * this function.
4776  **/
4777 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4778 {
4779         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4780         struct i40e_vsi_context ctxt;
4781         int ret = 0;
4782         int i;
4783
4784         /* Check if enabled_tc is same as existing or new TCs */
4785         if (vsi->tc_config.enabled_tc == enabled_tc)
4786                 return ret;
4787
4788         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4789         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4790                 if (enabled_tc & BIT(i))
4791                         bw_share[i] = 1;
4792         }
4793
4794         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4795         if (ret) {
4796                 dev_info(&vsi->back->pdev->dev,
4797                          "Failed configuring TC map %d for VSI %d\n",
4798                          enabled_tc, vsi->seid);
4799                 goto out;
4800         }
4801
4802         /* Update Queue Pairs Mapping for currently enabled UPs */
4803         ctxt.seid = vsi->seid;
4804         ctxt.pf_num = vsi->back->hw.pf_id;
4805         ctxt.vf_num = 0;
4806         ctxt.uplink_seid = vsi->uplink_seid;
4807         ctxt.info = vsi->info;
4808         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4809
4810         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4811                 ctxt.info.valid_sections |=
4812                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4813                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4814         }
4815
4816         /* Update the VSI after updating the VSI queue-mapping information */
4817         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4818         if (ret) {
4819                 dev_info(&vsi->back->pdev->dev,
4820                          "Update vsi tc config failed, err %s aq_err %s\n",
4821                          i40e_stat_str(&vsi->back->hw, ret),
4822                          i40e_aq_str(&vsi->back->hw,
4823                                      vsi->back->hw.aq.asq_last_status));
4824                 goto out;
4825         }
4826         /* update the local VSI info with updated queue map */
4827         i40e_vsi_update_queue_map(vsi, &ctxt);
4828         vsi->info.valid_sections = 0;
4829
4830         /* Update current VSI BW information */
4831         ret = i40e_vsi_get_bw_info(vsi);
4832         if (ret) {
4833                 dev_info(&vsi->back->pdev->dev,
4834                          "Failed updating vsi bw info, err %s aq_err %s\n",
4835                          i40e_stat_str(&vsi->back->hw, ret),
4836                          i40e_aq_str(&vsi->back->hw,
4837                                      vsi->back->hw.aq.asq_last_status));
4838                 goto out;
4839         }
4840
4841         /* Update the netdev TC setup */
4842         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4843 out:
4844         return ret;
4845 }
4846
4847 /**
4848  * i40e_veb_config_tc - Configure TCs for given VEB
4849  * @veb: given VEB
4850  * @enabled_tc: TC bitmap
4851  *
4852  * Configures given TC bitmap for VEB (switching) element
4853  **/
4854 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4855 {
4856         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4857         struct i40e_pf *pf = veb->pf;
4858         int ret = 0;
4859         int i;
4860
4861         /* No TCs or already enabled TCs just return */
4862         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4863                 return ret;
4864
4865         bw_data.tc_valid_bits = enabled_tc;
4866         /* bw_data.absolute_credits is not set (relative) */
4867
4868         /* Enable ETS TCs with equal BW Share for now */
4869         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4870                 if (enabled_tc & BIT(i))
4871                         bw_data.tc_bw_share_credits[i] = 1;
4872         }
4873
4874         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4875                                                    &bw_data, NULL);
4876         if (ret) {
4877                 dev_info(&pf->pdev->dev,
4878                          "VEB bw config failed, err %s aq_err %s\n",
4879                          i40e_stat_str(&pf->hw, ret),
4880                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4881                 goto out;
4882         }
4883
4884         /* Update the BW information */
4885         ret = i40e_veb_get_bw_info(veb);
4886         if (ret) {
4887                 dev_info(&pf->pdev->dev,
4888                          "Failed getting veb bw config, err %s aq_err %s\n",
4889                          i40e_stat_str(&pf->hw, ret),
4890                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4891         }
4892
4893 out:
4894         return ret;
4895 }
4896
4897 #ifdef CONFIG_I40E_DCB
4898 /**
4899  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4900  * @pf: PF struct
4901  *
4902  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4903  * the caller would've quiesce all the VSIs before calling
4904  * this function
4905  **/
4906 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4907 {
4908         u8 tc_map = 0;
4909         int ret;
4910         u8 v;
4911
4912         /* Enable the TCs available on PF to all VEBs */
4913         tc_map = i40e_pf_get_tc_map(pf);
4914         for (v = 0; v < I40E_MAX_VEB; v++) {
4915                 if (!pf->veb[v])
4916                         continue;
4917                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4918                 if (ret) {
4919                         dev_info(&pf->pdev->dev,
4920                                  "Failed configuring TC for VEB seid=%d\n",
4921                                  pf->veb[v]->seid);
4922                         /* Will try to configure as many components */
4923                 }
4924         }
4925
4926         /* Update each VSI */
4927         for (v = 0; v < pf->num_alloc_vsi; v++) {
4928                 if (!pf->vsi[v])
4929                         continue;
4930
4931                 /* - Enable all TCs for the LAN VSI
4932 #ifdef I40E_FCOE
4933                  * - For FCoE VSI only enable the TC configured
4934                  *   as per the APP TLV
4935 #endif
4936                  * - For all others keep them at TC0 for now
4937                  */
4938                 if (v == pf->lan_vsi)
4939                         tc_map = i40e_pf_get_tc_map(pf);
4940                 else
4941                         tc_map = i40e_pf_get_default_tc(pf);
4942 #ifdef I40E_FCOE
4943                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4944                         tc_map = i40e_get_fcoe_tc_map(pf);
4945 #endif /* #ifdef I40E_FCOE */
4946
4947                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4948                 if (ret) {
4949                         dev_info(&pf->pdev->dev,
4950                                  "Failed configuring TC for VSI seid=%d\n",
4951                                  pf->vsi[v]->seid);
4952                         /* Will try to configure as many components */
4953                 } else {
4954                         /* Re-configure VSI vectors based on updated TC map */
4955                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4956                         if (pf->vsi[v]->netdev)
4957                                 i40e_dcbnl_set_all(pf->vsi[v]);
4958                 }
4959                 i40e_notify_client_of_l2_param_changes(pf->vsi[v]);
4960         }
4961 }
4962
4963 /**
4964  * i40e_resume_port_tx - Resume port Tx
4965  * @pf: PF struct
4966  *
4967  * Resume a port's Tx and issue a PF reset in case of failure to
4968  * resume.
4969  **/
4970 static int i40e_resume_port_tx(struct i40e_pf *pf)
4971 {
4972         struct i40e_hw *hw = &pf->hw;
4973         int ret;
4974
4975         ret = i40e_aq_resume_port_tx(hw, NULL);
4976         if (ret) {
4977                 dev_info(&pf->pdev->dev,
4978                          "Resume Port Tx failed, err %s aq_err %s\n",
4979                           i40e_stat_str(&pf->hw, ret),
4980                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4981                 /* Schedule PF reset to recover */
4982                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4983                 i40e_service_event_schedule(pf);
4984         }
4985
4986         return ret;
4987 }
4988
4989 /**
4990  * i40e_init_pf_dcb - Initialize DCB configuration
4991  * @pf: PF being configured
4992  *
4993  * Query the current DCB configuration and cache it
4994  * in the hardware structure
4995  **/
4996 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4997 {
4998         struct i40e_hw *hw = &pf->hw;
4999         int err = 0;
5000
5001         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5002         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5003                 goto out;
5004
5005         /* Get the initial DCB configuration */
5006         err = i40e_init_dcb(hw);
5007         if (!err) {
5008                 /* Device/Function is not DCBX capable */
5009                 if ((!hw->func_caps.dcb) ||
5010                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5011                         dev_info(&pf->pdev->dev,
5012                                  "DCBX offload is not supported or is disabled for this PF.\n");
5013
5014                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5015                                 goto out;
5016
5017                 } else {
5018                         /* When status is not DISABLED then DCBX in FW */
5019                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5020                                        DCB_CAP_DCBX_VER_IEEE;
5021
5022                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5023                         /* Enable DCB tagging only when more than one TC */
5024                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5025                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5026                         dev_dbg(&pf->pdev->dev,
5027                                 "DCBX offload is supported for this PF.\n");
5028                 }
5029         } else {
5030                 dev_info(&pf->pdev->dev,
5031                          "Query for DCB configuration failed, err %s aq_err %s\n",
5032                          i40e_stat_str(&pf->hw, err),
5033                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5034         }
5035
5036 out:
5037         return err;
5038 }
5039 #endif /* CONFIG_I40E_DCB */
5040 #define SPEED_SIZE 14
5041 #define FC_SIZE 8
5042 /**
5043  * i40e_print_link_message - print link up or down
5044  * @vsi: the VSI for which link needs a message
5045  */
5046 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5047 {
5048         char *speed = "Unknown";
5049         char *fc = "Unknown";
5050
5051         if (vsi->current_isup == isup)
5052                 return;
5053         vsi->current_isup = isup;
5054         if (!isup) {
5055                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5056                 return;
5057         }
5058
5059         /* Warn user if link speed on NPAR enabled partition is not at
5060          * least 10GB
5061          */
5062         if (vsi->back->hw.func_caps.npar_enable &&
5063             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5064              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5065                 netdev_warn(vsi->netdev,
5066                             "The partition detected link speed that is less than 10Gbps\n");
5067
5068         switch (vsi->back->hw.phy.link_info.link_speed) {
5069         case I40E_LINK_SPEED_40GB:
5070                 speed = "40 G";
5071                 break;
5072         case I40E_LINK_SPEED_20GB:
5073                 speed = "20 G";
5074                 break;
5075         case I40E_LINK_SPEED_10GB:
5076                 speed = "10 G";
5077                 break;
5078         case I40E_LINK_SPEED_1GB:
5079                 speed = "1000 M";
5080                 break;
5081         case I40E_LINK_SPEED_100MB:
5082                 speed = "100 M";
5083                 break;
5084         default:
5085                 break;
5086         }
5087
5088         switch (vsi->back->hw.fc.current_mode) {
5089         case I40E_FC_FULL:
5090                 fc = "RX/TX";
5091                 break;
5092         case I40E_FC_TX_PAUSE:
5093                 fc = "TX";
5094                 break;
5095         case I40E_FC_RX_PAUSE:
5096                 fc = "RX";
5097                 break;
5098         default:
5099                 fc = "None";
5100                 break;
5101         }
5102
5103         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5104                     speed, fc);
5105 }
5106
5107 /**
5108  * i40e_up_complete - Finish the last steps of bringing up a connection
5109  * @vsi: the VSI being configured
5110  **/
5111 static int i40e_up_complete(struct i40e_vsi *vsi)
5112 {
5113         struct i40e_pf *pf = vsi->back;
5114         int err;
5115
5116         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5117                 i40e_vsi_configure_msix(vsi);
5118         else
5119                 i40e_configure_msi_and_legacy(vsi);
5120
5121         /* start rings */
5122         err = i40e_vsi_control_rings(vsi, true);
5123         if (err)
5124                 return err;
5125
5126         clear_bit(__I40E_DOWN, &vsi->state);
5127         i40e_napi_enable_all(vsi);
5128         i40e_vsi_enable_irq(vsi);
5129
5130         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5131             (vsi->netdev)) {
5132                 i40e_print_link_message(vsi, true);
5133                 netif_tx_start_all_queues(vsi->netdev);
5134                 netif_carrier_on(vsi->netdev);
5135         } else if (vsi->netdev) {
5136                 i40e_print_link_message(vsi, false);
5137                 /* need to check for qualified module here*/
5138                 if ((pf->hw.phy.link_info.link_info &
5139                         I40E_AQ_MEDIA_AVAILABLE) &&
5140                     (!(pf->hw.phy.link_info.an_info &
5141                         I40E_AQ_QUALIFIED_MODULE)))
5142                         netdev_err(vsi->netdev,
5143                                    "the driver failed to link because an unqualified module was detected.");
5144         }
5145
5146         /* replay FDIR SB filters */
5147         if (vsi->type == I40E_VSI_FDIR) {
5148                 /* reset fd counters */
5149                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5150                 if (pf->fd_tcp_rule > 0) {
5151                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5152                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5153                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5154                         pf->fd_tcp_rule = 0;
5155                 }
5156                 i40e_fdir_filter_restore(vsi);
5157         }
5158
5159         /* On the next run of the service_task, notify any clients of the new
5160          * opened netdev
5161          */
5162         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5163         i40e_service_event_schedule(pf);
5164
5165         return 0;
5166 }
5167
5168 /**
5169  * i40e_vsi_reinit_locked - Reset the VSI
5170  * @vsi: the VSI being configured
5171  *
5172  * Rebuild the ring structs after some configuration
5173  * has changed, e.g. MTU size.
5174  **/
5175 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5176 {
5177         struct i40e_pf *pf = vsi->back;
5178
5179         WARN_ON(in_interrupt());
5180         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5181                 usleep_range(1000, 2000);
5182         i40e_down(vsi);
5183
5184         i40e_up(vsi);
5185         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5186 }
5187
5188 /**
5189  * i40e_up - Bring the connection back up after being down
5190  * @vsi: the VSI being configured
5191  **/
5192 int i40e_up(struct i40e_vsi *vsi)
5193 {
5194         int err;
5195
5196         err = i40e_vsi_configure(vsi);
5197         if (!err)
5198                 err = i40e_up_complete(vsi);
5199
5200         return err;
5201 }
5202
5203 /**
5204  * i40e_down - Shutdown the connection processing
5205  * @vsi: the VSI being stopped
5206  **/
5207 void i40e_down(struct i40e_vsi *vsi)
5208 {
5209         int i;
5210
5211         /* It is assumed that the caller of this function
5212          * sets the vsi->state __I40E_DOWN bit.
5213          */
5214         if (vsi->netdev) {
5215                 netif_carrier_off(vsi->netdev);
5216                 netif_tx_disable(vsi->netdev);
5217         }
5218         i40e_vsi_disable_irq(vsi);
5219         i40e_vsi_control_rings(vsi, false);
5220         i40e_napi_disable_all(vsi);
5221
5222         for (i = 0; i < vsi->num_queue_pairs; i++) {
5223                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5224                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5225         }
5226
5227         i40e_notify_client_of_netdev_close(vsi, false);
5228
5229 }
5230
5231 /**
5232  * i40e_setup_tc - configure multiple traffic classes
5233  * @netdev: net device to configure
5234  * @tc: number of traffic classes to enable
5235  **/
5236 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5237 {
5238         struct i40e_netdev_priv *np = netdev_priv(netdev);
5239         struct i40e_vsi *vsi = np->vsi;
5240         struct i40e_pf *pf = vsi->back;
5241         u8 enabled_tc = 0;
5242         int ret = -EINVAL;
5243         int i;
5244
5245         /* Check if DCB enabled to continue */
5246         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5247                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5248                 goto exit;
5249         }
5250
5251         /* Check if MFP enabled */
5252         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5253                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5254                 goto exit;
5255         }
5256
5257         /* Check whether tc count is within enabled limit */
5258         if (tc > i40e_pf_get_num_tc(pf)) {
5259                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5260                 goto exit;
5261         }
5262
5263         /* Generate TC map for number of tc requested */
5264         for (i = 0; i < tc; i++)
5265                 enabled_tc |= BIT(i);
5266
5267         /* Requesting same TC configuration as already enabled */
5268         if (enabled_tc == vsi->tc_config.enabled_tc)
5269                 return 0;
5270
5271         /* Quiesce VSI queues */
5272         i40e_quiesce_vsi(vsi);
5273
5274         /* Configure VSI for enabled TCs */
5275         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5276         if (ret) {
5277                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5278                             vsi->seid);
5279                 goto exit;
5280         }
5281
5282         /* Unquiesce VSI */
5283         i40e_unquiesce_vsi(vsi);
5284
5285 exit:
5286         return ret;
5287 }
5288
5289 #ifdef I40E_FCOE
5290 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5291                     struct tc_to_netdev *tc)
5292 #else
5293 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5294                            struct tc_to_netdev *tc)
5295 #endif
5296 {
5297         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5298                 return -EINVAL;
5299         return i40e_setup_tc(netdev, tc->tc);
5300 }
5301
5302 /**
5303  * i40e_open - Called when a network interface is made active
5304  * @netdev: network interface device structure
5305  *
5306  * The open entry point is called when a network interface is made
5307  * active by the system (IFF_UP).  At this point all resources needed
5308  * for transmit and receive operations are allocated, the interrupt
5309  * handler is registered with the OS, the netdev watchdog subtask is
5310  * enabled, and the stack is notified that the interface is ready.
5311  *
5312  * Returns 0 on success, negative value on failure
5313  **/
5314 int i40e_open(struct net_device *netdev)
5315 {
5316         struct i40e_netdev_priv *np = netdev_priv(netdev);
5317         struct i40e_vsi *vsi = np->vsi;
5318         struct i40e_pf *pf = vsi->back;
5319         int err;
5320
5321         /* disallow open during test or if eeprom is broken */
5322         if (test_bit(__I40E_TESTING, &pf->state) ||
5323             test_bit(__I40E_BAD_EEPROM, &pf->state))
5324                 return -EBUSY;
5325
5326         netif_carrier_off(netdev);
5327
5328         err = i40e_vsi_open(vsi);
5329         if (err)
5330                 return err;
5331
5332         /* configure global TSO hardware offload settings */
5333         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5334                                                        TCP_FLAG_FIN) >> 16);
5335         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5336                                                        TCP_FLAG_FIN |
5337                                                        TCP_FLAG_CWR) >> 16);
5338         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5339
5340         udp_tunnel_get_rx_info(netdev);
5341         i40e_notify_client_of_netdev_open(vsi);
5342
5343         return 0;
5344 }
5345
5346 /**
5347  * i40e_vsi_open -
5348  * @vsi: the VSI to open
5349  *
5350  * Finish initialization of the VSI.
5351  *
5352  * Returns 0 on success, negative value on failure
5353  **/
5354 int i40e_vsi_open(struct i40e_vsi *vsi)
5355 {
5356         struct i40e_pf *pf = vsi->back;
5357         char int_name[I40E_INT_NAME_STR_LEN];
5358         int err;
5359
5360         /* allocate descriptors */
5361         err = i40e_vsi_setup_tx_resources(vsi);
5362         if (err)
5363                 goto err_setup_tx;
5364         err = i40e_vsi_setup_rx_resources(vsi);
5365         if (err)
5366                 goto err_setup_rx;
5367
5368         err = i40e_vsi_configure(vsi);
5369         if (err)
5370                 goto err_setup_rx;
5371
5372         if (vsi->netdev) {
5373                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5374                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5375                 err = i40e_vsi_request_irq(vsi, int_name);
5376                 if (err)
5377                         goto err_setup_rx;
5378
5379                 /* Notify the stack of the actual queue counts. */
5380                 err = netif_set_real_num_tx_queues(vsi->netdev,
5381                                                    vsi->num_queue_pairs);
5382                 if (err)
5383                         goto err_set_queues;
5384
5385                 err = netif_set_real_num_rx_queues(vsi->netdev,
5386                                                    vsi->num_queue_pairs);
5387                 if (err)
5388                         goto err_set_queues;
5389
5390         } else if (vsi->type == I40E_VSI_FDIR) {
5391                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5392                          dev_driver_string(&pf->pdev->dev),
5393                          dev_name(&pf->pdev->dev));
5394                 err = i40e_vsi_request_irq(vsi, int_name);
5395
5396         } else {
5397                 err = -EINVAL;
5398                 goto err_setup_rx;
5399         }
5400
5401         err = i40e_up_complete(vsi);
5402         if (err)
5403                 goto err_up_complete;
5404
5405         return 0;
5406
5407 err_up_complete:
5408         i40e_down(vsi);
5409 err_set_queues:
5410         i40e_vsi_free_irq(vsi);
5411 err_setup_rx:
5412         i40e_vsi_free_rx_resources(vsi);
5413 err_setup_tx:
5414         i40e_vsi_free_tx_resources(vsi);
5415         if (vsi == pf->vsi[pf->lan_vsi])
5416                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5417
5418         return err;
5419 }
5420
5421 /**
5422  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5423  * @pf: Pointer to PF
5424  *
5425  * This function destroys the hlist where all the Flow Director
5426  * filters were saved.
5427  **/
5428 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5429 {
5430         struct i40e_fdir_filter *filter;
5431         struct hlist_node *node2;
5432
5433         hlist_for_each_entry_safe(filter, node2,
5434                                   &pf->fdir_filter_list, fdir_node) {
5435                 hlist_del(&filter->fdir_node);
5436                 kfree(filter);
5437         }
5438         pf->fdir_pf_active_filters = 0;
5439 }
5440
5441 /**
5442  * i40e_close - Disables a network interface
5443  * @netdev: network interface device structure
5444  *
5445  * The close entry point is called when an interface is de-activated
5446  * by the OS.  The hardware is still under the driver's control, but
5447  * this netdev interface is disabled.
5448  *
5449  * Returns 0, this is not allowed to fail
5450  **/
5451 int i40e_close(struct net_device *netdev)
5452 {
5453         struct i40e_netdev_priv *np = netdev_priv(netdev);
5454         struct i40e_vsi *vsi = np->vsi;
5455
5456         i40e_vsi_close(vsi);
5457
5458         return 0;
5459 }
5460
5461 /**
5462  * i40e_do_reset - Start a PF or Core Reset sequence
5463  * @pf: board private structure
5464  * @reset_flags: which reset is requested
5465  *
5466  * The essential difference in resets is that the PF Reset
5467  * doesn't clear the packet buffers, doesn't reset the PE
5468  * firmware, and doesn't bother the other PFs on the chip.
5469  **/
5470 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5471 {
5472         u32 val;
5473
5474         WARN_ON(in_interrupt());
5475
5476
5477         /* do the biggest reset indicated */
5478         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5479
5480                 /* Request a Global Reset
5481                  *
5482                  * This will start the chip's countdown to the actual full
5483                  * chip reset event, and a warning interrupt to be sent
5484                  * to all PFs, including the requestor.  Our handler
5485                  * for the warning interrupt will deal with the shutdown
5486                  * and recovery of the switch setup.
5487                  */
5488                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5489                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5490                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5491                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5492
5493         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5494
5495                 /* Request a Core Reset
5496                  *
5497                  * Same as Global Reset, except does *not* include the MAC/PHY
5498                  */
5499                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5500                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5501                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5502                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5503                 i40e_flush(&pf->hw);
5504
5505         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5506
5507                 /* Request a PF Reset
5508                  *
5509                  * Resets only the PF-specific registers
5510                  *
5511                  * This goes directly to the tear-down and rebuild of
5512                  * the switch, since we need to do all the recovery as
5513                  * for the Core Reset.
5514                  */
5515                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5516                 i40e_handle_reset_warning(pf);
5517
5518         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5519                 int v;
5520
5521                 /* Find the VSI(s) that requested a re-init */
5522                 dev_info(&pf->pdev->dev,
5523                          "VSI reinit requested\n");
5524                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5525                         struct i40e_vsi *vsi = pf->vsi[v];
5526
5527                         if (vsi != NULL &&
5528                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5529                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5530                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5531                         }
5532                 }
5533         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5534                 int v;
5535
5536                 /* Find the VSI(s) that needs to be brought down */
5537                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5538                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5539                         struct i40e_vsi *vsi = pf->vsi[v];
5540
5541                         if (vsi != NULL &&
5542                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5543                                 set_bit(__I40E_DOWN, &vsi->state);
5544                                 i40e_down(vsi);
5545                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5546                         }
5547                 }
5548         } else {
5549                 dev_info(&pf->pdev->dev,
5550                          "bad reset request 0x%08x\n", reset_flags);
5551         }
5552 }
5553
5554 #ifdef CONFIG_I40E_DCB
5555 /**
5556  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5557  * @pf: board private structure
5558  * @old_cfg: current DCB config
5559  * @new_cfg: new DCB config
5560  **/
5561 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5562                             struct i40e_dcbx_config *old_cfg,
5563                             struct i40e_dcbx_config *new_cfg)
5564 {
5565         bool need_reconfig = false;
5566
5567         /* Check if ETS configuration has changed */
5568         if (memcmp(&new_cfg->etscfg,
5569                    &old_cfg->etscfg,
5570                    sizeof(new_cfg->etscfg))) {
5571                 /* If Priority Table has changed reconfig is needed */
5572                 if (memcmp(&new_cfg->etscfg.prioritytable,
5573                            &old_cfg->etscfg.prioritytable,
5574                            sizeof(new_cfg->etscfg.prioritytable))) {
5575                         need_reconfig = true;
5576                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5577                 }
5578
5579                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5580                            &old_cfg->etscfg.tcbwtable,
5581                            sizeof(new_cfg->etscfg.tcbwtable)))
5582                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5583
5584                 if (memcmp(&new_cfg->etscfg.tsatable,
5585                            &old_cfg->etscfg.tsatable,
5586                            sizeof(new_cfg->etscfg.tsatable)))
5587                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5588         }
5589
5590         /* Check if PFC configuration has changed */
5591         if (memcmp(&new_cfg->pfc,
5592                    &old_cfg->pfc,
5593                    sizeof(new_cfg->pfc))) {
5594                 need_reconfig = true;
5595                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5596         }
5597
5598         /* Check if APP Table has changed */
5599         if (memcmp(&new_cfg->app,
5600                    &old_cfg->app,
5601                    sizeof(new_cfg->app))) {
5602                 need_reconfig = true;
5603                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5604         }
5605
5606         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5607         return need_reconfig;
5608 }
5609
5610 /**
5611  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5612  * @pf: board private structure
5613  * @e: event info posted on ARQ
5614  **/
5615 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5616                                   struct i40e_arq_event_info *e)
5617 {
5618         struct i40e_aqc_lldp_get_mib *mib =
5619                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5620         struct i40e_hw *hw = &pf->hw;
5621         struct i40e_dcbx_config tmp_dcbx_cfg;
5622         bool need_reconfig = false;
5623         int ret = 0;
5624         u8 type;
5625
5626         /* Not DCB capable or capability disabled */
5627         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5628                 return ret;
5629
5630         /* Ignore if event is not for Nearest Bridge */
5631         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5632                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5633         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5634         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5635                 return ret;
5636
5637         /* Check MIB Type and return if event for Remote MIB update */
5638         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5639         dev_dbg(&pf->pdev->dev,
5640                 "LLDP event mib type %s\n", type ? "remote" : "local");
5641         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5642                 /* Update the remote cached instance and return */
5643                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5644                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5645                                 &hw->remote_dcbx_config);
5646                 goto exit;
5647         }
5648
5649         /* Store the old configuration */
5650         tmp_dcbx_cfg = hw->local_dcbx_config;
5651
5652         /* Reset the old DCBx configuration data */
5653         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5654         /* Get updated DCBX data from firmware */
5655         ret = i40e_get_dcb_config(&pf->hw);
5656         if (ret) {
5657                 dev_info(&pf->pdev->dev,
5658                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5659                          i40e_stat_str(&pf->hw, ret),
5660                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5661                 goto exit;
5662         }
5663
5664         /* No change detected in DCBX configs */
5665         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5666                     sizeof(tmp_dcbx_cfg))) {
5667                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5668                 goto exit;
5669         }
5670
5671         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5672                                                &hw->local_dcbx_config);
5673
5674         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5675
5676         if (!need_reconfig)
5677                 goto exit;
5678
5679         /* Enable DCB tagging only when more than one TC */
5680         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5681                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5682         else
5683                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5684
5685         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5686         /* Reconfiguration needed quiesce all VSIs */
5687         i40e_pf_quiesce_all_vsi(pf);
5688
5689         /* Changes in configuration update VEB/VSI */
5690         i40e_dcb_reconfigure(pf);
5691
5692         ret = i40e_resume_port_tx(pf);
5693
5694         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5695         /* In case of error no point in resuming VSIs */
5696         if (ret)
5697                 goto exit;
5698
5699         /* Wait for the PF's queues to be disabled */
5700         ret = i40e_pf_wait_queues_disabled(pf);
5701         if (ret) {
5702                 /* Schedule PF reset to recover */
5703                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5704                 i40e_service_event_schedule(pf);
5705         } else {
5706                 i40e_pf_unquiesce_all_vsi(pf);
5707         }
5708
5709 exit:
5710         return ret;
5711 }
5712 #endif /* CONFIG_I40E_DCB */
5713
5714 /**
5715  * i40e_do_reset_safe - Protected reset path for userland calls.
5716  * @pf: board private structure
5717  * @reset_flags: which reset is requested
5718  *
5719  **/
5720 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5721 {
5722         rtnl_lock();
5723         i40e_do_reset(pf, reset_flags);
5724         rtnl_unlock();
5725 }
5726
5727 /**
5728  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5729  * @pf: board private structure
5730  * @e: event info posted on ARQ
5731  *
5732  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5733  * and VF queues
5734  **/
5735 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5736                                            struct i40e_arq_event_info *e)
5737 {
5738         struct i40e_aqc_lan_overflow *data =
5739                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5740         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5741         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5742         struct i40e_hw *hw = &pf->hw;
5743         struct i40e_vf *vf;
5744         u16 vf_id;
5745
5746         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5747                 queue, qtx_ctl);
5748
5749         /* Queue belongs to VF, find the VF and issue VF reset */
5750         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5751             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5752                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5753                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5754                 vf_id -= hw->func_caps.vf_base_id;
5755                 vf = &pf->vf[vf_id];
5756                 i40e_vc_notify_vf_reset(vf);
5757                 /* Allow VF to process pending reset notification */
5758                 msleep(20);
5759                 i40e_reset_vf(vf, false);
5760         }
5761 }
5762
5763 /**
5764  * i40e_service_event_complete - Finish up the service event
5765  * @pf: board private structure
5766  **/
5767 static void i40e_service_event_complete(struct i40e_pf *pf)
5768 {
5769         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5770
5771         /* flush memory to make sure state is correct before next watchog */
5772         smp_mb__before_atomic();
5773         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5774 }
5775
5776 /**
5777  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5778  * @pf: board private structure
5779  **/
5780 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5781 {
5782         u32 val, fcnt_prog;
5783
5784         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5785         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5786         return fcnt_prog;
5787 }
5788
5789 /**
5790  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5791  * @pf: board private structure
5792  **/
5793 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5794 {
5795         u32 val, fcnt_prog;
5796
5797         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5798         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5799                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5800                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5801         return fcnt_prog;
5802 }
5803
5804 /**
5805  * i40e_get_global_fd_count - Get total FD filters programmed on device
5806  * @pf: board private structure
5807  **/
5808 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5809 {
5810         u32 val, fcnt_prog;
5811
5812         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5813         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5814                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5815                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5816         return fcnt_prog;
5817 }
5818
5819 /**
5820  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5821  * @pf: board private structure
5822  **/
5823 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5824 {
5825         struct i40e_fdir_filter *filter;
5826         u32 fcnt_prog, fcnt_avail;
5827         struct hlist_node *node;
5828
5829         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5830                 return;
5831
5832         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5833          * to re-enable
5834          */
5835         fcnt_prog = i40e_get_global_fd_count(pf);
5836         fcnt_avail = pf->fdir_pf_filter_count;
5837         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5838             (pf->fd_add_err == 0) ||
5839             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5840                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5841                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5842                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5843                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5844                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5845                 }
5846         }
5847         /* Wait for some more space to be available to turn on ATR */
5848         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5849                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5850                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5851                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5852                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5853                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5854                 }
5855         }
5856
5857         /* if hw had a problem adding a filter, delete it */
5858         if (pf->fd_inv > 0) {
5859                 hlist_for_each_entry_safe(filter, node,
5860                                           &pf->fdir_filter_list, fdir_node) {
5861                         if (filter->fd_id == pf->fd_inv) {
5862                                 hlist_del(&filter->fdir_node);
5863                                 kfree(filter);
5864                                 pf->fdir_pf_active_filters--;
5865                         }
5866                 }
5867         }
5868 }
5869
5870 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5871 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5872 /**
5873  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5874  * @pf: board private structure
5875  **/
5876 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5877 {
5878         unsigned long min_flush_time;
5879         int flush_wait_retry = 50;
5880         bool disable_atr = false;
5881         int fd_room;
5882         int reg;
5883
5884         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5885                 return;
5886
5887         if (!time_after(jiffies, pf->fd_flush_timestamp +
5888                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5889                 return;
5890
5891         /* If the flush is happening too quick and we have mostly SB rules we
5892          * should not re-enable ATR for some time.
5893          */
5894         min_flush_time = pf->fd_flush_timestamp +
5895                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5896         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5897
5898         if (!(time_after(jiffies, min_flush_time)) &&
5899             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5900                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5901                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5902                 disable_atr = true;
5903         }
5904
5905         pf->fd_flush_timestamp = jiffies;
5906         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5907         /* flush all filters */
5908         wr32(&pf->hw, I40E_PFQF_CTL_1,
5909              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5910         i40e_flush(&pf->hw);
5911         pf->fd_flush_cnt++;
5912         pf->fd_add_err = 0;
5913         do {
5914                 /* Check FD flush status every 5-6msec */
5915                 usleep_range(5000, 6000);
5916                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5917                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5918                         break;
5919         } while (flush_wait_retry--);
5920         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5921                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5922         } else {
5923                 /* replay sideband filters */
5924                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5925                 if (!disable_atr)
5926                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5927                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5928                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5929                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5930         }
5931 }
5932
5933 /**
5934  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5935  * @pf: board private structure
5936  **/
5937 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5938 {
5939         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5940 }
5941
5942 /* We can see up to 256 filter programming desc in transit if the filters are
5943  * being applied really fast; before we see the first
5944  * filter miss error on Rx queue 0. Accumulating enough error messages before
5945  * reacting will make sure we don't cause flush too often.
5946  */
5947 #define I40E_MAX_FD_PROGRAM_ERROR 256
5948
5949 /**
5950  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5951  * @pf: board private structure
5952  **/
5953 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5954 {
5955
5956         /* if interface is down do nothing */
5957         if (test_bit(__I40E_DOWN, &pf->state))
5958                 return;
5959
5960         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5961                 return;
5962
5963         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5964                 i40e_fdir_flush_and_replay(pf);
5965
5966         i40e_fdir_check_and_reenable(pf);
5967
5968 }
5969
5970 /**
5971  * i40e_vsi_link_event - notify VSI of a link event
5972  * @vsi: vsi to be notified
5973  * @link_up: link up or down
5974  **/
5975 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5976 {
5977         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5978                 return;
5979
5980         switch (vsi->type) {
5981         case I40E_VSI_MAIN:
5982 #ifdef I40E_FCOE
5983         case I40E_VSI_FCOE:
5984 #endif
5985                 if (!vsi->netdev || !vsi->netdev_registered)
5986                         break;
5987
5988                 if (link_up) {
5989                         netif_carrier_on(vsi->netdev);
5990                         netif_tx_wake_all_queues(vsi->netdev);
5991                 } else {
5992                         netif_carrier_off(vsi->netdev);
5993                         netif_tx_stop_all_queues(vsi->netdev);
5994                 }
5995                 break;
5996
5997         case I40E_VSI_SRIOV:
5998         case I40E_VSI_VMDQ2:
5999         case I40E_VSI_CTRL:
6000         case I40E_VSI_IWARP:
6001         case I40E_VSI_MIRROR:
6002         default:
6003                 /* there is no notification for other VSIs */
6004                 break;
6005         }
6006 }
6007
6008 /**
6009  * i40e_veb_link_event - notify elements on the veb of a link event
6010  * @veb: veb to be notified
6011  * @link_up: link up or down
6012  **/
6013 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6014 {
6015         struct i40e_pf *pf;
6016         int i;
6017
6018         if (!veb || !veb->pf)
6019                 return;
6020         pf = veb->pf;
6021
6022         /* depth first... */
6023         for (i = 0; i < I40E_MAX_VEB; i++)
6024                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6025                         i40e_veb_link_event(pf->veb[i], link_up);
6026
6027         /* ... now the local VSIs */
6028         for (i = 0; i < pf->num_alloc_vsi; i++)
6029                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6030                         i40e_vsi_link_event(pf->vsi[i], link_up);
6031 }
6032
6033 /**
6034  * i40e_link_event - Update netif_carrier status
6035  * @pf: board private structure
6036  **/
6037 static void i40e_link_event(struct i40e_pf *pf)
6038 {
6039         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6040         u8 new_link_speed, old_link_speed;
6041         i40e_status status;
6042         bool new_link, old_link;
6043
6044         /* save off old link status information */
6045         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6046
6047         /* set this to force the get_link_status call to refresh state */
6048         pf->hw.phy.get_link_info = true;
6049
6050         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6051
6052         status = i40e_get_link_status(&pf->hw, &new_link);
6053         if (status) {
6054                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6055                         status);
6056                 return;
6057         }
6058
6059         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6060         new_link_speed = pf->hw.phy.link_info.link_speed;
6061
6062         if (new_link == old_link &&
6063             new_link_speed == old_link_speed &&
6064             (test_bit(__I40E_DOWN, &vsi->state) ||
6065              new_link == netif_carrier_ok(vsi->netdev)))
6066                 return;
6067
6068         if (!test_bit(__I40E_DOWN, &vsi->state))
6069                 i40e_print_link_message(vsi, new_link);
6070
6071         /* Notify the base of the switch tree connected to
6072          * the link.  Floating VEBs are not notified.
6073          */
6074         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6075                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6076         else
6077                 i40e_vsi_link_event(vsi, new_link);
6078
6079         if (pf->vf)
6080                 i40e_vc_notify_link_state(pf);
6081
6082         if (pf->flags & I40E_FLAG_PTP)
6083                 i40e_ptp_set_increment(pf);
6084 }
6085
6086 /**
6087  * i40e_watchdog_subtask - periodic checks not using event driven response
6088  * @pf: board private structure
6089  **/
6090 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6091 {
6092         int i;
6093
6094         /* if interface is down do nothing */
6095         if (test_bit(__I40E_DOWN, &pf->state) ||
6096             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6097                 return;
6098
6099         /* make sure we don't do these things too often */
6100         if (time_before(jiffies, (pf->service_timer_previous +
6101                                   pf->service_timer_period)))
6102                 return;
6103         pf->service_timer_previous = jiffies;
6104
6105         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6106                 i40e_link_event(pf);
6107
6108         /* Update the stats for active netdevs so the network stack
6109          * can look at updated numbers whenever it cares to
6110          */
6111         for (i = 0; i < pf->num_alloc_vsi; i++)
6112                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6113                         i40e_update_stats(pf->vsi[i]);
6114
6115         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6116                 /* Update the stats for the active switching components */
6117                 for (i = 0; i < I40E_MAX_VEB; i++)
6118                         if (pf->veb[i])
6119                                 i40e_update_veb_stats(pf->veb[i]);
6120         }
6121
6122         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6123 }
6124
6125 /**
6126  * i40e_reset_subtask - Set up for resetting the device and driver
6127  * @pf: board private structure
6128  **/
6129 static void i40e_reset_subtask(struct i40e_pf *pf)
6130 {
6131         u32 reset_flags = 0;
6132
6133         rtnl_lock();
6134         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6135                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6136                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6137         }
6138         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6139                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6140                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6141         }
6142         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6143                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6144                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6145         }
6146         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6147                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6148                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6149         }
6150         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6151                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6152                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6153         }
6154
6155         /* If there's a recovery already waiting, it takes
6156          * precedence before starting a new reset sequence.
6157          */
6158         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6159                 i40e_handle_reset_warning(pf);
6160                 goto unlock;
6161         }
6162
6163         /* If we're already down or resetting, just bail */
6164         if (reset_flags &&
6165             !test_bit(__I40E_DOWN, &pf->state) &&
6166             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6167                 i40e_do_reset(pf, reset_flags);
6168
6169 unlock:
6170         rtnl_unlock();
6171 }
6172
6173 /**
6174  * i40e_handle_link_event - Handle link event
6175  * @pf: board private structure
6176  * @e: event info posted on ARQ
6177  **/
6178 static void i40e_handle_link_event(struct i40e_pf *pf,
6179                                    struct i40e_arq_event_info *e)
6180 {
6181         struct i40e_aqc_get_link_status *status =
6182                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6183
6184         /* Do a new status request to re-enable LSE reporting
6185          * and load new status information into the hw struct
6186          * This completely ignores any state information
6187          * in the ARQ event info, instead choosing to always
6188          * issue the AQ update link status command.
6189          */
6190         i40e_link_event(pf);
6191
6192         /* check for unqualified module, if link is down */
6193         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6194             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6195             (!(status->link_info & I40E_AQ_LINK_UP)))
6196                 dev_err(&pf->pdev->dev,
6197                         "The driver failed to link because an unqualified module was detected.\n");
6198 }
6199
6200 /**
6201  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6202  * @pf: board private structure
6203  **/
6204 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6205 {
6206         struct i40e_arq_event_info event;
6207         struct i40e_hw *hw = &pf->hw;
6208         u16 pending, i = 0;
6209         i40e_status ret;
6210         u16 opcode;
6211         u32 oldval;
6212         u32 val;
6213
6214         /* Do not run clean AQ when PF reset fails */
6215         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6216                 return;
6217
6218         /* check for error indications */
6219         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6220         oldval = val;
6221         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6222                 if (hw->debug_mask & I40E_DEBUG_AQ)
6223                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6224                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6225         }
6226         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6227                 if (hw->debug_mask & I40E_DEBUG_AQ)
6228                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6229                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6230                 pf->arq_overflows++;
6231         }
6232         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6233                 if (hw->debug_mask & I40E_DEBUG_AQ)
6234                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6235                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6236         }
6237         if (oldval != val)
6238                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6239
6240         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6241         oldval = val;
6242         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6243                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6244                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6245                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6246         }
6247         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6248                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6249                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6250                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6251         }
6252         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6253                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6254                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6255                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6256         }
6257         if (oldval != val)
6258                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6259
6260         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6261         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6262         if (!event.msg_buf)
6263                 return;
6264
6265         do {
6266                 ret = i40e_clean_arq_element(hw, &event, &pending);
6267                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6268                         break;
6269                 else if (ret) {
6270                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6271                         break;
6272                 }
6273
6274                 opcode = le16_to_cpu(event.desc.opcode);
6275                 switch (opcode) {
6276
6277                 case i40e_aqc_opc_get_link_status:
6278                         i40e_handle_link_event(pf, &event);
6279                         break;
6280                 case i40e_aqc_opc_send_msg_to_pf:
6281                         ret = i40e_vc_process_vf_msg(pf,
6282                                         le16_to_cpu(event.desc.retval),
6283                                         le32_to_cpu(event.desc.cookie_high),
6284                                         le32_to_cpu(event.desc.cookie_low),
6285                                         event.msg_buf,
6286                                         event.msg_len);
6287                         break;
6288                 case i40e_aqc_opc_lldp_update_mib:
6289                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6290 #ifdef CONFIG_I40E_DCB
6291                         rtnl_lock();
6292                         ret = i40e_handle_lldp_event(pf, &event);
6293                         rtnl_unlock();
6294 #endif /* CONFIG_I40E_DCB */
6295                         break;
6296                 case i40e_aqc_opc_event_lan_overflow:
6297                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6298                         i40e_handle_lan_overflow_event(pf, &event);
6299                         break;
6300                 case i40e_aqc_opc_send_msg_to_peer:
6301                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6302                         break;
6303                 case i40e_aqc_opc_nvm_erase:
6304                 case i40e_aqc_opc_nvm_update:
6305                 case i40e_aqc_opc_oem_post_update:
6306                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6307                                    "ARQ NVM operation 0x%04x completed\n",
6308                                    opcode);
6309                         break;
6310                 default:
6311                         dev_info(&pf->pdev->dev,
6312                                  "ARQ: Unknown event 0x%04x ignored\n",
6313                                  opcode);
6314                         break;
6315                 }
6316         } while (pending && (i++ < pf->adminq_work_limit));
6317
6318         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6319         /* re-enable Admin queue interrupt cause */
6320         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6321         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6322         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6323         i40e_flush(hw);
6324
6325         kfree(event.msg_buf);
6326 }
6327
6328 /**
6329  * i40e_verify_eeprom - make sure eeprom is good to use
6330  * @pf: board private structure
6331  **/
6332 static void i40e_verify_eeprom(struct i40e_pf *pf)
6333 {
6334         int err;
6335
6336         err = i40e_diag_eeprom_test(&pf->hw);
6337         if (err) {
6338                 /* retry in case of garbage read */
6339                 err = i40e_diag_eeprom_test(&pf->hw);
6340                 if (err) {
6341                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6342                                  err);
6343                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6344                 }
6345         }
6346
6347         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6348                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6349                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6350         }
6351 }
6352
6353 /**
6354  * i40e_enable_pf_switch_lb
6355  * @pf: pointer to the PF structure
6356  *
6357  * enable switch loop back or die - no point in a return value
6358  **/
6359 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6360 {
6361         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6362         struct i40e_vsi_context ctxt;
6363         int ret;
6364
6365         ctxt.seid = pf->main_vsi_seid;
6366         ctxt.pf_num = pf->hw.pf_id;
6367         ctxt.vf_num = 0;
6368         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6369         if (ret) {
6370                 dev_info(&pf->pdev->dev,
6371                          "couldn't get PF vsi config, err %s aq_err %s\n",
6372                          i40e_stat_str(&pf->hw, ret),
6373                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6374                 return;
6375         }
6376         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6377         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6378         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6379
6380         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6381         if (ret) {
6382                 dev_info(&pf->pdev->dev,
6383                          "update vsi switch failed, err %s aq_err %s\n",
6384                          i40e_stat_str(&pf->hw, ret),
6385                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6386         }
6387 }
6388
6389 /**
6390  * i40e_disable_pf_switch_lb
6391  * @pf: pointer to the PF structure
6392  *
6393  * disable switch loop back or die - no point in a return value
6394  **/
6395 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6396 {
6397         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6398         struct i40e_vsi_context ctxt;
6399         int ret;
6400
6401         ctxt.seid = pf->main_vsi_seid;
6402         ctxt.pf_num = pf->hw.pf_id;
6403         ctxt.vf_num = 0;
6404         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6405         if (ret) {
6406                 dev_info(&pf->pdev->dev,
6407                          "couldn't get PF vsi config, err %s aq_err %s\n",
6408                          i40e_stat_str(&pf->hw, ret),
6409                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6410                 return;
6411         }
6412         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6413         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6414         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6415
6416         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6417         if (ret) {
6418                 dev_info(&pf->pdev->dev,
6419                          "update vsi switch failed, err %s aq_err %s\n",
6420                          i40e_stat_str(&pf->hw, ret),
6421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6422         }
6423 }
6424
6425 /**
6426  * i40e_config_bridge_mode - Configure the HW bridge mode
6427  * @veb: pointer to the bridge instance
6428  *
6429  * Configure the loop back mode for the LAN VSI that is downlink to the
6430  * specified HW bridge instance. It is expected this function is called
6431  * when a new HW bridge is instantiated.
6432  **/
6433 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6434 {
6435         struct i40e_pf *pf = veb->pf;
6436
6437         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6438                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6439                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6440         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6441                 i40e_disable_pf_switch_lb(pf);
6442         else
6443                 i40e_enable_pf_switch_lb(pf);
6444 }
6445
6446 /**
6447  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6448  * @veb: pointer to the VEB instance
6449  *
6450  * This is a recursive function that first builds the attached VSIs then
6451  * recurses in to build the next layer of VEB.  We track the connections
6452  * through our own index numbers because the seid's from the HW could
6453  * change across the reset.
6454  **/
6455 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6456 {
6457         struct i40e_vsi *ctl_vsi = NULL;
6458         struct i40e_pf *pf = veb->pf;
6459         int v, veb_idx;
6460         int ret;
6461
6462         /* build VSI that owns this VEB, temporarily attached to base VEB */
6463         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6464                 if (pf->vsi[v] &&
6465                     pf->vsi[v]->veb_idx == veb->idx &&
6466                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6467                         ctl_vsi = pf->vsi[v];
6468                         break;
6469                 }
6470         }
6471         if (!ctl_vsi) {
6472                 dev_info(&pf->pdev->dev,
6473                          "missing owner VSI for veb_idx %d\n", veb->idx);
6474                 ret = -ENOENT;
6475                 goto end_reconstitute;
6476         }
6477         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6478                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6479         ret = i40e_add_vsi(ctl_vsi);
6480         if (ret) {
6481                 dev_info(&pf->pdev->dev,
6482                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6483                          veb->idx, ret);
6484                 goto end_reconstitute;
6485         }
6486         i40e_vsi_reset_stats(ctl_vsi);
6487
6488         /* create the VEB in the switch and move the VSI onto the VEB */
6489         ret = i40e_add_veb(veb, ctl_vsi);
6490         if (ret)
6491                 goto end_reconstitute;
6492
6493         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6494                 veb->bridge_mode = BRIDGE_MODE_VEB;
6495         else
6496                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6497         i40e_config_bridge_mode(veb);
6498
6499         /* create the remaining VSIs attached to this VEB */
6500         for (v = 0; v < pf->num_alloc_vsi; v++) {
6501                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6502                         continue;
6503
6504                 if (pf->vsi[v]->veb_idx == veb->idx) {
6505                         struct i40e_vsi *vsi = pf->vsi[v];
6506
6507                         vsi->uplink_seid = veb->seid;
6508                         ret = i40e_add_vsi(vsi);
6509                         if (ret) {
6510                                 dev_info(&pf->pdev->dev,
6511                                          "rebuild of vsi_idx %d failed: %d\n",
6512                                          v, ret);
6513                                 goto end_reconstitute;
6514                         }
6515                         i40e_vsi_reset_stats(vsi);
6516                 }
6517         }
6518
6519         /* create any VEBs attached to this VEB - RECURSION */
6520         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6521                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6522                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6523                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6524                         if (ret)
6525                                 break;
6526                 }
6527         }
6528
6529 end_reconstitute:
6530         return ret;
6531 }
6532
6533 /**
6534  * i40e_get_capabilities - get info about the HW
6535  * @pf: the PF struct
6536  **/
6537 static int i40e_get_capabilities(struct i40e_pf *pf)
6538 {
6539         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6540         u16 data_size;
6541         int buf_len;
6542         int err;
6543
6544         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6545         do {
6546                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6547                 if (!cap_buf)
6548                         return -ENOMEM;
6549
6550                 /* this loads the data into the hw struct for us */
6551                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6552                                             &data_size,
6553                                             i40e_aqc_opc_list_func_capabilities,
6554                                             NULL);
6555                 /* data loaded, buffer no longer needed */
6556                 kfree(cap_buf);
6557
6558                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6559                         /* retry with a larger buffer */
6560                         buf_len = data_size;
6561                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6562                         dev_info(&pf->pdev->dev,
6563                                  "capability discovery failed, err %s aq_err %s\n",
6564                                  i40e_stat_str(&pf->hw, err),
6565                                  i40e_aq_str(&pf->hw,
6566                                              pf->hw.aq.asq_last_status));
6567                         return -ENODEV;
6568                 }
6569         } while (err);
6570
6571         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6572                 dev_info(&pf->pdev->dev,
6573                          "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",
6574                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6575                          pf->hw.func_caps.num_msix_vectors,
6576                          pf->hw.func_caps.num_msix_vectors_vf,
6577                          pf->hw.func_caps.fd_filters_guaranteed,
6578                          pf->hw.func_caps.fd_filters_best_effort,
6579                          pf->hw.func_caps.num_tx_qp,
6580                          pf->hw.func_caps.num_vsis);
6581
6582 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6583                        + pf->hw.func_caps.num_vfs)
6584         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6585                 dev_info(&pf->pdev->dev,
6586                          "got num_vsis %d, setting num_vsis to %d\n",
6587                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6588                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6589         }
6590
6591         return 0;
6592 }
6593
6594 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6595
6596 /**
6597  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6598  * @pf: board private structure
6599  **/
6600 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6601 {
6602         struct i40e_vsi *vsi;
6603         int i;
6604
6605         /* quick workaround for an NVM issue that leaves a critical register
6606          * uninitialized
6607          */
6608         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6609                 static const u32 hkey[] = {
6610                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6611                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6612                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6613                         0x95b3a76d};
6614
6615                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6616                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6617         }
6618
6619         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6620                 return;
6621
6622         /* find existing VSI and see if it needs configuring */
6623         vsi = NULL;
6624         for (i = 0; i < pf->num_alloc_vsi; i++) {
6625                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6626                         vsi = pf->vsi[i];
6627                         break;
6628                 }
6629         }
6630
6631         /* create a new VSI if none exists */
6632         if (!vsi) {
6633                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6634                                      pf->vsi[pf->lan_vsi]->seid, 0);
6635                 if (!vsi) {
6636                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6637                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6638                         return;
6639                 }
6640         }
6641
6642         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6643 }
6644
6645 /**
6646  * i40e_fdir_teardown - release the Flow Director resources
6647  * @pf: board private structure
6648  **/
6649 static void i40e_fdir_teardown(struct i40e_pf *pf)
6650 {
6651         int i;
6652
6653         i40e_fdir_filter_exit(pf);
6654         for (i = 0; i < pf->num_alloc_vsi; i++) {
6655                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6656                         i40e_vsi_release(pf->vsi[i]);
6657                         break;
6658                 }
6659         }
6660 }
6661
6662 /**
6663  * i40e_prep_for_reset - prep for the core to reset
6664  * @pf: board private structure
6665  *
6666  * Close up the VFs and other things in prep for PF Reset.
6667   **/
6668 static void i40e_prep_for_reset(struct i40e_pf *pf)
6669 {
6670         struct i40e_hw *hw = &pf->hw;
6671         i40e_status ret = 0;
6672         u32 v;
6673
6674         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6675         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6676                 return;
6677         if (i40e_check_asq_alive(&pf->hw))
6678                 i40e_vc_notify_reset(pf);
6679
6680         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6681
6682         /* quiesce the VSIs and their queues that are not already DOWN */
6683         i40e_pf_quiesce_all_vsi(pf);
6684
6685         for (v = 0; v < pf->num_alloc_vsi; v++) {
6686                 if (pf->vsi[v])
6687                         pf->vsi[v]->seid = 0;
6688         }
6689
6690         i40e_shutdown_adminq(&pf->hw);
6691
6692         /* call shutdown HMC */
6693         if (hw->hmc.hmc_obj) {
6694                 ret = i40e_shutdown_lan_hmc(hw);
6695                 if (ret)
6696                         dev_warn(&pf->pdev->dev,
6697                                  "shutdown_lan_hmc failed: %d\n", ret);
6698         }
6699 }
6700
6701 /**
6702  * i40e_send_version - update firmware with driver version
6703  * @pf: PF struct
6704  */
6705 static void i40e_send_version(struct i40e_pf *pf)
6706 {
6707         struct i40e_driver_version dv;
6708
6709         dv.major_version = DRV_VERSION_MAJOR;
6710         dv.minor_version = DRV_VERSION_MINOR;
6711         dv.build_version = DRV_VERSION_BUILD;
6712         dv.subbuild_version = 0;
6713         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6714         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6715 }
6716
6717 /**
6718  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6719  * @pf: board private structure
6720  * @reinit: if the Main VSI needs to re-initialized.
6721  **/
6722 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6723 {
6724         struct i40e_hw *hw = &pf->hw;
6725         u8 set_fc_aq_fail = 0;
6726         i40e_status ret;
6727         u32 val;
6728         u32 v;
6729
6730         /* Now we wait for GRST to settle out.
6731          * We don't have to delete the VEBs or VSIs from the hw switch
6732          * because the reset will make them disappear.
6733          */
6734         ret = i40e_pf_reset(hw);
6735         if (ret) {
6736                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6737                 set_bit(__I40E_RESET_FAILED, &pf->state);
6738                 goto clear_recovery;
6739         }
6740         pf->pfr_count++;
6741
6742         if (test_bit(__I40E_DOWN, &pf->state))
6743                 goto clear_recovery;
6744         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6745
6746         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6747         ret = i40e_init_adminq(&pf->hw);
6748         if (ret) {
6749                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6750                          i40e_stat_str(&pf->hw, ret),
6751                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6752                 goto clear_recovery;
6753         }
6754
6755         /* re-verify the eeprom if we just had an EMP reset */
6756         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6757                 i40e_verify_eeprom(pf);
6758
6759         i40e_clear_pxe_mode(hw);
6760         ret = i40e_get_capabilities(pf);
6761         if (ret)
6762                 goto end_core_reset;
6763
6764         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6765                                 hw->func_caps.num_rx_qp,
6766                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6767         if (ret) {
6768                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6769                 goto end_core_reset;
6770         }
6771         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6772         if (ret) {
6773                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6774                 goto end_core_reset;
6775         }
6776
6777 #ifdef CONFIG_I40E_DCB
6778         ret = i40e_init_pf_dcb(pf);
6779         if (ret) {
6780                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6781                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6782                 /* Continue without DCB enabled */
6783         }
6784 #endif /* CONFIG_I40E_DCB */
6785 #ifdef I40E_FCOE
6786         i40e_init_pf_fcoe(pf);
6787
6788 #endif
6789         /* do basic switch setup */
6790         ret = i40e_setup_pf_switch(pf, reinit);
6791         if (ret)
6792                 goto end_core_reset;
6793
6794         /* The driver only wants link up/down and module qualification
6795          * reports from firmware.  Note the negative logic.
6796          */
6797         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6798                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6799                                          I40E_AQ_EVENT_MEDIA_NA |
6800                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6801         if (ret)
6802                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6803                          i40e_stat_str(&pf->hw, ret),
6804                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6805
6806         /* make sure our flow control settings are restored */
6807         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6808         if (ret)
6809                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6810                         i40e_stat_str(&pf->hw, ret),
6811                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6812
6813         /* Rebuild the VSIs and VEBs that existed before reset.
6814          * They are still in our local switch element arrays, so only
6815          * need to rebuild the switch model in the HW.
6816          *
6817          * If there were VEBs but the reconstitution failed, we'll try
6818          * try to recover minimal use by getting the basic PF VSI working.
6819          */
6820         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6821                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6822                 /* find the one VEB connected to the MAC, and find orphans */
6823                 for (v = 0; v < I40E_MAX_VEB; v++) {
6824                         if (!pf->veb[v])
6825                                 continue;
6826
6827                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6828                             pf->veb[v]->uplink_seid == 0) {
6829                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6830
6831                                 if (!ret)
6832                                         continue;
6833
6834                                 /* If Main VEB failed, we're in deep doodoo,
6835                                  * so give up rebuilding the switch and set up
6836                                  * for minimal rebuild of PF VSI.
6837                                  * If orphan failed, we'll report the error
6838                                  * but try to keep going.
6839                                  */
6840                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6841                                         dev_info(&pf->pdev->dev,
6842                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6843                                                  ret);
6844                                         pf->vsi[pf->lan_vsi]->uplink_seid
6845                                                                 = pf->mac_seid;
6846                                         break;
6847                                 } else if (pf->veb[v]->uplink_seid == 0) {
6848                                         dev_info(&pf->pdev->dev,
6849                                                  "rebuild of orphan VEB failed: %d\n",
6850                                                  ret);
6851                                 }
6852                         }
6853                 }
6854         }
6855
6856         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6857                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6858                 /* no VEB, so rebuild only the Main VSI */
6859                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6860                 if (ret) {
6861                         dev_info(&pf->pdev->dev,
6862                                  "rebuild of Main VSI failed: %d\n", ret);
6863                         goto end_core_reset;
6864                 }
6865         }
6866
6867         /* Reconfigure hardware for allowing smaller MSS in the case
6868          * of TSO, so that we avoid the MDD being fired and causing
6869          * a reset in the case of small MSS+TSO.
6870          */
6871 #define I40E_REG_MSS          0x000E64DC
6872 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6873 #define I40E_64BYTE_MSS       0x400000
6874         val = rd32(hw, I40E_REG_MSS);
6875         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6876                 val &= ~I40E_REG_MSS_MIN_MASK;
6877                 val |= I40E_64BYTE_MSS;
6878                 wr32(hw, I40E_REG_MSS, val);
6879         }
6880
6881         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6882                 msleep(75);
6883                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6884                 if (ret)
6885                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6886                                  i40e_stat_str(&pf->hw, ret),
6887                                  i40e_aq_str(&pf->hw,
6888                                              pf->hw.aq.asq_last_status));
6889         }
6890         /* reinit the misc interrupt */
6891         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6892                 ret = i40e_setup_misc_vector(pf);
6893
6894         /* Add a filter to drop all Flow control frames from any VSI from being
6895          * transmitted. By doing so we stop a malicious VF from sending out
6896          * PAUSE or PFC frames and potentially controlling traffic for other
6897          * PF/VF VSIs.
6898          * The FW can still send Flow control frames if enabled.
6899          */
6900         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6901                                                        pf->main_vsi_seid);
6902
6903         /* restart the VSIs that were rebuilt and running before the reset */
6904         i40e_pf_unquiesce_all_vsi(pf);
6905
6906         if (pf->num_alloc_vfs) {
6907                 for (v = 0; v < pf->num_alloc_vfs; v++)
6908                         i40e_reset_vf(&pf->vf[v], true);
6909         }
6910
6911         /* tell the firmware that we're starting */
6912         i40e_send_version(pf);
6913
6914 end_core_reset:
6915         clear_bit(__I40E_RESET_FAILED, &pf->state);
6916 clear_recovery:
6917         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6918 }
6919
6920 /**
6921  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6922  * @pf: board private structure
6923  *
6924  * Close up the VFs and other things in prep for a Core Reset,
6925  * then get ready to rebuild the world.
6926  **/
6927 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6928 {
6929         i40e_prep_for_reset(pf);
6930         i40e_reset_and_rebuild(pf, false);
6931 }
6932
6933 /**
6934  * i40e_handle_mdd_event
6935  * @pf: pointer to the PF structure
6936  *
6937  * Called from the MDD irq handler to identify possibly malicious vfs
6938  **/
6939 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6940 {
6941         struct i40e_hw *hw = &pf->hw;
6942         bool mdd_detected = false;
6943         bool pf_mdd_detected = false;
6944         struct i40e_vf *vf;
6945         u32 reg;
6946         int i;
6947
6948         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6949                 return;
6950
6951         /* find what triggered the MDD event */
6952         reg = rd32(hw, I40E_GL_MDET_TX);
6953         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6954                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6955                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6956                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6957                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6958                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6959                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6960                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6961                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6962                                 pf->hw.func_caps.base_queue;
6963                 if (netif_msg_tx_err(pf))
6964                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6965                                  event, queue, pf_num, vf_num);
6966                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6967                 mdd_detected = true;
6968         }
6969         reg = rd32(hw, I40E_GL_MDET_RX);
6970         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6971                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6972                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6973                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6974                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6975                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6976                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6977                                 pf->hw.func_caps.base_queue;
6978                 if (netif_msg_rx_err(pf))
6979                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6980                                  event, queue, func);
6981                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6982                 mdd_detected = true;
6983         }
6984
6985         if (mdd_detected) {
6986                 reg = rd32(hw, I40E_PF_MDET_TX);
6987                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6988                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6989                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6990                         pf_mdd_detected = true;
6991                 }
6992                 reg = rd32(hw, I40E_PF_MDET_RX);
6993                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6994                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6995                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6996                         pf_mdd_detected = true;
6997                 }
6998                 /* Queue belongs to the PF, initiate a reset */
6999                 if (pf_mdd_detected) {
7000                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7001                         i40e_service_event_schedule(pf);
7002                 }
7003         }
7004
7005         /* see if one of the VFs needs its hand slapped */
7006         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7007                 vf = &(pf->vf[i]);
7008                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7009                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7010                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7011                         vf->num_mdd_events++;
7012                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7013                                  i);
7014                 }
7015
7016                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7017                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7018                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7019                         vf->num_mdd_events++;
7020                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7021                                  i);
7022                 }
7023
7024                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7025                         dev_info(&pf->pdev->dev,
7026                                  "Too many MDD events on VF %d, disabled\n", i);
7027                         dev_info(&pf->pdev->dev,
7028                                  "Use PF Control I/F to re-enable the VF\n");
7029                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7030                 }
7031         }
7032
7033         /* re-enable mdd interrupt cause */
7034         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7035         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7036         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7037         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7038         i40e_flush(hw);
7039 }
7040
7041 /**
7042  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7043  * @pf: board private structure
7044  **/
7045 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7046 {
7047         struct i40e_hw *hw = &pf->hw;
7048         i40e_status ret;
7049         __be16 port;
7050         int i;
7051
7052         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7053                 return;
7054
7055         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7056
7057         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7058                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7059                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7060                         port = pf->udp_ports[i].index;
7061                         if (port)
7062                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7063                                                      pf->udp_ports[i].type,
7064                                                      NULL, NULL);
7065                         else
7066                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7067
7068                         if (ret) {
7069                                 dev_dbg(&pf->pdev->dev,
7070                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7071                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7072                                         port ? "add" : "delete",
7073                                         ntohs(port), i,
7074                                         i40e_stat_str(&pf->hw, ret),
7075                                         i40e_aq_str(&pf->hw,
7076                                                     pf->hw.aq.asq_last_status));
7077                                 pf->udp_ports[i].index = 0;
7078                         }
7079                 }
7080         }
7081 }
7082
7083 /**
7084  * i40e_service_task - Run the driver's async subtasks
7085  * @work: pointer to work_struct containing our data
7086  **/
7087 static void i40e_service_task(struct work_struct *work)
7088 {
7089         struct i40e_pf *pf = container_of(work,
7090                                           struct i40e_pf,
7091                                           service_task);
7092         unsigned long start_time = jiffies;
7093
7094         /* don't bother with service tasks if a reset is in progress */
7095         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7096                 i40e_service_event_complete(pf);
7097                 return;
7098         }
7099
7100         i40e_detect_recover_hung(pf);
7101         i40e_sync_filters_subtask(pf);
7102         i40e_reset_subtask(pf);
7103         i40e_handle_mdd_event(pf);
7104         i40e_vc_process_vflr_event(pf);
7105         i40e_watchdog_subtask(pf);
7106         i40e_fdir_reinit_subtask(pf);
7107         i40e_client_subtask(pf);
7108         i40e_sync_filters_subtask(pf);
7109         i40e_sync_udp_filters_subtask(pf);
7110         i40e_clean_adminq_subtask(pf);
7111
7112         i40e_service_event_complete(pf);
7113
7114         /* If the tasks have taken longer than one timer cycle or there
7115          * is more work to be done, reschedule the service task now
7116          * rather than wait for the timer to tick again.
7117          */
7118         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7119             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7120             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7121             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7122                 i40e_service_event_schedule(pf);
7123 }
7124
7125 /**
7126  * i40e_service_timer - timer callback
7127  * @data: pointer to PF struct
7128  **/
7129 static void i40e_service_timer(unsigned long data)
7130 {
7131         struct i40e_pf *pf = (struct i40e_pf *)data;
7132
7133         mod_timer(&pf->service_timer,
7134                   round_jiffies(jiffies + pf->service_timer_period));
7135         i40e_service_event_schedule(pf);
7136 }
7137
7138 /**
7139  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7140  * @vsi: the VSI being configured
7141  **/
7142 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7143 {
7144         struct i40e_pf *pf = vsi->back;
7145
7146         switch (vsi->type) {
7147         case I40E_VSI_MAIN:
7148                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7149                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7150                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7151                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7152                         vsi->num_q_vectors = pf->num_lan_msix;
7153                 else
7154                         vsi->num_q_vectors = 1;
7155
7156                 break;
7157
7158         case I40E_VSI_FDIR:
7159                 vsi->alloc_queue_pairs = 1;
7160                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7161                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7162                 vsi->num_q_vectors = 1;
7163                 break;
7164
7165         case I40E_VSI_VMDQ2:
7166                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7167                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7168                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7169                 vsi->num_q_vectors = pf->num_vmdq_msix;
7170                 break;
7171
7172         case I40E_VSI_SRIOV:
7173                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7174                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7175                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7176                 break;
7177
7178 #ifdef I40E_FCOE
7179         case I40E_VSI_FCOE:
7180                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7181                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7182                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7183                 vsi->num_q_vectors = pf->num_fcoe_msix;
7184                 break;
7185
7186 #endif /* I40E_FCOE */
7187         default:
7188                 WARN_ON(1);
7189                 return -ENODATA;
7190         }
7191
7192         return 0;
7193 }
7194
7195 /**
7196  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7197  * @type: VSI pointer
7198  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7199  *
7200  * On error: returns error code (negative)
7201  * On success: returns 0
7202  **/
7203 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7204 {
7205         int size;
7206         int ret = 0;
7207
7208         /* allocate memory for both Tx and Rx ring pointers */
7209         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7210         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7211         if (!vsi->tx_rings)
7212                 return -ENOMEM;
7213         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7214
7215         if (alloc_qvectors) {
7216                 /* allocate memory for q_vector pointers */
7217                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7218                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7219                 if (!vsi->q_vectors) {
7220                         ret = -ENOMEM;
7221                         goto err_vectors;
7222                 }
7223         }
7224         return ret;
7225
7226 err_vectors:
7227         kfree(vsi->tx_rings);
7228         return ret;
7229 }
7230
7231 /**
7232  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7233  * @pf: board private structure
7234  * @type: type of VSI
7235  *
7236  * On error: returns error code (negative)
7237  * On success: returns vsi index in PF (positive)
7238  **/
7239 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7240 {
7241         int ret = -ENODEV;
7242         struct i40e_vsi *vsi;
7243         int vsi_idx;
7244         int i;
7245
7246         /* Need to protect the allocation of the VSIs at the PF level */
7247         mutex_lock(&pf->switch_mutex);
7248
7249         /* VSI list may be fragmented if VSI creation/destruction has
7250          * been happening.  We can afford to do a quick scan to look
7251          * for any free VSIs in the list.
7252          *
7253          * find next empty vsi slot, looping back around if necessary
7254          */
7255         i = pf->next_vsi;
7256         while (i < pf->num_alloc_vsi && pf->vsi[i])
7257                 i++;
7258         if (i >= pf->num_alloc_vsi) {
7259                 i = 0;
7260                 while (i < pf->next_vsi && pf->vsi[i])
7261                         i++;
7262         }
7263
7264         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7265                 vsi_idx = i;             /* Found one! */
7266         } else {
7267                 ret = -ENODEV;
7268                 goto unlock_pf;  /* out of VSI slots! */
7269         }
7270         pf->next_vsi = ++i;
7271
7272         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7273         if (!vsi) {
7274                 ret = -ENOMEM;
7275                 goto unlock_pf;
7276         }
7277         vsi->type = type;
7278         vsi->back = pf;
7279         set_bit(__I40E_DOWN, &vsi->state);
7280         vsi->flags = 0;
7281         vsi->idx = vsi_idx;
7282         vsi->int_rate_limit = 0;
7283         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7284                                 pf->rss_table_size : 64;
7285         vsi->netdev_registered = false;
7286         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7287         INIT_LIST_HEAD(&vsi->mac_filter_list);
7288         vsi->irqs_ready = false;
7289
7290         ret = i40e_set_num_rings_in_vsi(vsi);
7291         if (ret)
7292                 goto err_rings;
7293
7294         ret = i40e_vsi_alloc_arrays(vsi, true);
7295         if (ret)
7296                 goto err_rings;
7297
7298         /* Setup default MSIX irq handler for VSI */
7299         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7300
7301         /* Initialize VSI lock */
7302         spin_lock_init(&vsi->mac_filter_list_lock);
7303         pf->vsi[vsi_idx] = vsi;
7304         ret = vsi_idx;
7305         goto unlock_pf;
7306
7307 err_rings:
7308         pf->next_vsi = i - 1;
7309         kfree(vsi);
7310 unlock_pf:
7311         mutex_unlock(&pf->switch_mutex);
7312         return ret;
7313 }
7314
7315 /**
7316  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7317  * @type: VSI pointer
7318  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7319  *
7320  * On error: returns error code (negative)
7321  * On success: returns 0
7322  **/
7323 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7324 {
7325         /* free the ring and vector containers */
7326         if (free_qvectors) {
7327                 kfree(vsi->q_vectors);
7328                 vsi->q_vectors = NULL;
7329         }
7330         kfree(vsi->tx_rings);
7331         vsi->tx_rings = NULL;
7332         vsi->rx_rings = NULL;
7333 }
7334
7335 /**
7336  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7337  * and lookup table
7338  * @vsi: Pointer to VSI structure
7339  */
7340 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7341 {
7342         if (!vsi)
7343                 return;
7344
7345         kfree(vsi->rss_hkey_user);
7346         vsi->rss_hkey_user = NULL;
7347
7348         kfree(vsi->rss_lut_user);
7349         vsi->rss_lut_user = NULL;
7350 }
7351
7352 /**
7353  * i40e_vsi_clear - Deallocate the VSI provided
7354  * @vsi: the VSI being un-configured
7355  **/
7356 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7357 {
7358         struct i40e_pf *pf;
7359
7360         if (!vsi)
7361                 return 0;
7362
7363         if (!vsi->back)
7364                 goto free_vsi;
7365         pf = vsi->back;
7366
7367         mutex_lock(&pf->switch_mutex);
7368         if (!pf->vsi[vsi->idx]) {
7369                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7370                         vsi->idx, vsi->idx, vsi, vsi->type);
7371                 goto unlock_vsi;
7372         }
7373
7374         if (pf->vsi[vsi->idx] != vsi) {
7375                 dev_err(&pf->pdev->dev,
7376                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7377                         pf->vsi[vsi->idx]->idx,
7378                         pf->vsi[vsi->idx],
7379                         pf->vsi[vsi->idx]->type,
7380                         vsi->idx, vsi, vsi->type);
7381                 goto unlock_vsi;
7382         }
7383
7384         /* updates the PF for this cleared vsi */
7385         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7386         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7387
7388         i40e_vsi_free_arrays(vsi, true);
7389         i40e_clear_rss_config_user(vsi);
7390
7391         pf->vsi[vsi->idx] = NULL;
7392         if (vsi->idx < pf->next_vsi)
7393                 pf->next_vsi = vsi->idx;
7394
7395 unlock_vsi:
7396         mutex_unlock(&pf->switch_mutex);
7397 free_vsi:
7398         kfree(vsi);
7399
7400         return 0;
7401 }
7402
7403 /**
7404  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7405  * @vsi: the VSI being cleaned
7406  **/
7407 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7408 {
7409         int i;
7410
7411         if (vsi->tx_rings && vsi->tx_rings[0]) {
7412                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7413                         kfree_rcu(vsi->tx_rings[i], rcu);
7414                         vsi->tx_rings[i] = NULL;
7415                         vsi->rx_rings[i] = NULL;
7416                 }
7417         }
7418 }
7419
7420 /**
7421  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7422  * @vsi: the VSI being configured
7423  **/
7424 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7425 {
7426         struct i40e_ring *tx_ring, *rx_ring;
7427         struct i40e_pf *pf = vsi->back;
7428         int i;
7429
7430         /* Set basic values in the rings to be used later during open() */
7431         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7432                 /* allocate space for both Tx and Rx in one shot */
7433                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7434                 if (!tx_ring)
7435                         goto err_out;
7436
7437                 tx_ring->queue_index = i;
7438                 tx_ring->reg_idx = vsi->base_queue + i;
7439                 tx_ring->ring_active = false;
7440                 tx_ring->vsi = vsi;
7441                 tx_ring->netdev = vsi->netdev;
7442                 tx_ring->dev = &pf->pdev->dev;
7443                 tx_ring->count = vsi->num_desc;
7444                 tx_ring->size = 0;
7445                 tx_ring->dcb_tc = 0;
7446                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7447                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7448                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7449                 vsi->tx_rings[i] = tx_ring;
7450
7451                 rx_ring = &tx_ring[1];
7452                 rx_ring->queue_index = i;
7453                 rx_ring->reg_idx = vsi->base_queue + i;
7454                 rx_ring->ring_active = false;
7455                 rx_ring->vsi = vsi;
7456                 rx_ring->netdev = vsi->netdev;
7457                 rx_ring->dev = &pf->pdev->dev;
7458                 rx_ring->count = vsi->num_desc;
7459                 rx_ring->size = 0;
7460                 rx_ring->dcb_tc = 0;
7461                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7462                 vsi->rx_rings[i] = rx_ring;
7463         }
7464
7465         return 0;
7466
7467 err_out:
7468         i40e_vsi_clear_rings(vsi);
7469         return -ENOMEM;
7470 }
7471
7472 /**
7473  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7474  * @pf: board private structure
7475  * @vectors: the number of MSI-X vectors to request
7476  *
7477  * Returns the number of vectors reserved, or error
7478  **/
7479 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7480 {
7481         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7482                                         I40E_MIN_MSIX, vectors);
7483         if (vectors < 0) {
7484                 dev_info(&pf->pdev->dev,
7485                          "MSI-X vector reservation failed: %d\n", vectors);
7486                 vectors = 0;
7487         }
7488
7489         return vectors;
7490 }
7491
7492 /**
7493  * i40e_init_msix - Setup the MSIX capability
7494  * @pf: board private structure
7495  *
7496  * Work with the OS to set up the MSIX vectors needed.
7497  *
7498  * Returns the number of vectors reserved or negative on failure
7499  **/
7500 static int i40e_init_msix(struct i40e_pf *pf)
7501 {
7502         struct i40e_hw *hw = &pf->hw;
7503         int vectors_left;
7504         int v_budget, i;
7505         int v_actual;
7506         int iwarp_requested = 0;
7507
7508         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7509                 return -ENODEV;
7510
7511         /* The number of vectors we'll request will be comprised of:
7512          *   - Add 1 for "other" cause for Admin Queue events, etc.
7513          *   - The number of LAN queue pairs
7514          *      - Queues being used for RSS.
7515          *              We don't need as many as max_rss_size vectors.
7516          *              use rss_size instead in the calculation since that
7517          *              is governed by number of cpus in the system.
7518          *      - assumes symmetric Tx/Rx pairing
7519          *   - The number of VMDq pairs
7520          *   - The CPU count within the NUMA node if iWARP is enabled
7521 #ifdef I40E_FCOE
7522          *   - The number of FCOE qps.
7523 #endif
7524          * Once we count this up, try the request.
7525          *
7526          * If we can't get what we want, we'll simplify to nearly nothing
7527          * and try again.  If that still fails, we punt.
7528          */
7529         vectors_left = hw->func_caps.num_msix_vectors;
7530         v_budget = 0;
7531
7532         /* reserve one vector for miscellaneous handler */
7533         if (vectors_left) {
7534                 v_budget++;
7535                 vectors_left--;
7536         }
7537
7538         /* reserve vectors for the main PF traffic queues */
7539         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7540         vectors_left -= pf->num_lan_msix;
7541         v_budget += pf->num_lan_msix;
7542
7543         /* reserve one vector for sideband flow director */
7544         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7545                 if (vectors_left) {
7546                         v_budget++;
7547                         vectors_left--;
7548                 } else {
7549                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7550                 }
7551         }
7552
7553 #ifdef I40E_FCOE
7554         /* can we reserve enough for FCoE? */
7555         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7556                 if (!vectors_left)
7557                         pf->num_fcoe_msix = 0;
7558                 else if (vectors_left >= pf->num_fcoe_qps)
7559                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7560                 else
7561                         pf->num_fcoe_msix = 1;
7562                 v_budget += pf->num_fcoe_msix;
7563                 vectors_left -= pf->num_fcoe_msix;
7564         }
7565
7566 #endif
7567         /* can we reserve enough for iWARP? */
7568         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7569                 if (!vectors_left)
7570                         pf->num_iwarp_msix = 0;
7571                 else if (vectors_left < pf->num_iwarp_msix)
7572                         pf->num_iwarp_msix = 1;
7573                 v_budget += pf->num_iwarp_msix;
7574                 vectors_left -= pf->num_iwarp_msix;
7575         }
7576
7577         /* any vectors left over go for VMDq support */
7578         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7579                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7580                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7581
7582                 /* if we're short on vectors for what's desired, we limit
7583                  * the queues per vmdq.  If this is still more than are
7584                  * available, the user will need to change the number of
7585                  * queues/vectors used by the PF later with the ethtool
7586                  * channels command
7587                  */
7588                 if (vmdq_vecs < vmdq_vecs_wanted)
7589                         pf->num_vmdq_qps = 1;
7590                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7591
7592                 v_budget += vmdq_vecs;
7593                 vectors_left -= vmdq_vecs;
7594         }
7595
7596         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7597                                    GFP_KERNEL);
7598         if (!pf->msix_entries)
7599                 return -ENOMEM;
7600
7601         for (i = 0; i < v_budget; i++)
7602                 pf->msix_entries[i].entry = i;
7603         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7604
7605         if (v_actual != v_budget) {
7606                 /* If we have limited resources, we will start with no vectors
7607                  * for the special features and then allocate vectors to some
7608                  * of these features based on the policy and at the end disable
7609                  * the features that did not get any vectors.
7610                  */
7611                 iwarp_requested = pf->num_iwarp_msix;
7612                 pf->num_iwarp_msix = 0;
7613 #ifdef I40E_FCOE
7614                 pf->num_fcoe_qps = 0;
7615                 pf->num_fcoe_msix = 0;
7616 #endif
7617                 pf->num_vmdq_msix = 0;
7618         }
7619
7620         if (v_actual < I40E_MIN_MSIX) {
7621                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7622                 kfree(pf->msix_entries);
7623                 pf->msix_entries = NULL;
7624                 return -ENODEV;
7625
7626         } else if (v_actual == I40E_MIN_MSIX) {
7627                 /* Adjust for minimal MSIX use */
7628                 pf->num_vmdq_vsis = 0;
7629                 pf->num_vmdq_qps = 0;
7630                 pf->num_lan_qps = 1;
7631                 pf->num_lan_msix = 1;
7632
7633         } else if (v_actual != v_budget) {
7634                 int vec;
7635
7636                 /* reserve the misc vector */
7637                 vec = v_actual - 1;
7638
7639                 /* Scale vector usage down */
7640                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7641                 pf->num_vmdq_vsis = 1;
7642                 pf->num_vmdq_qps = 1;
7643                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7644
7645                 /* partition out the remaining vectors */
7646                 switch (vec) {
7647                 case 2:
7648                         pf->num_lan_msix = 1;
7649                         break;
7650                 case 3:
7651                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7652                                 pf->num_lan_msix = 1;
7653                                 pf->num_iwarp_msix = 1;
7654                         } else {
7655                                 pf->num_lan_msix = 2;
7656                         }
7657 #ifdef I40E_FCOE
7658                         /* give one vector to FCoE */
7659                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7660                                 pf->num_lan_msix = 1;
7661                                 pf->num_fcoe_msix = 1;
7662                         }
7663 #endif
7664                         break;
7665                 default:
7666                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7667                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7668                                                  iwarp_requested);
7669                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7670                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7671                         } else {
7672                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7673                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7674                         }
7675                         pf->num_lan_msix = min_t(int,
7676                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7677                                                               pf->num_lan_msix);
7678 #ifdef I40E_FCOE
7679                         /* give one vector to FCoE */
7680                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7681                                 pf->num_fcoe_msix = 1;
7682                                 vec--;
7683                         }
7684 #endif
7685                         break;
7686                 }
7687         }
7688
7689         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7690             (pf->num_vmdq_msix == 0)) {
7691                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7692                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7693         }
7694
7695         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7696             (pf->num_iwarp_msix == 0)) {
7697                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7698                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7699         }
7700 #ifdef I40E_FCOE
7701
7702         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7703                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7704                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7705         }
7706 #endif
7707         return v_actual;
7708 }
7709
7710 /**
7711  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7712  * @vsi: the VSI being configured
7713  * @v_idx: index of the vector in the vsi struct
7714  *
7715  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7716  **/
7717 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7718 {
7719         struct i40e_q_vector *q_vector;
7720
7721         /* allocate q_vector */
7722         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7723         if (!q_vector)
7724                 return -ENOMEM;
7725
7726         q_vector->vsi = vsi;
7727         q_vector->v_idx = v_idx;
7728         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7729         if (vsi->netdev)
7730                 netif_napi_add(vsi->netdev, &q_vector->napi,
7731                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7732
7733         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7734         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7735
7736         /* tie q_vector and vsi together */
7737         vsi->q_vectors[v_idx] = q_vector;
7738
7739         return 0;
7740 }
7741
7742 /**
7743  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7744  * @vsi: the VSI being configured
7745  *
7746  * We allocate one q_vector per queue interrupt.  If allocation fails we
7747  * return -ENOMEM.
7748  **/
7749 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7750 {
7751         struct i40e_pf *pf = vsi->back;
7752         int v_idx, num_q_vectors;
7753         int err;
7754
7755         /* if not MSIX, give the one vector only to the LAN VSI */
7756         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7757                 num_q_vectors = vsi->num_q_vectors;
7758         else if (vsi == pf->vsi[pf->lan_vsi])
7759                 num_q_vectors = 1;
7760         else
7761                 return -EINVAL;
7762
7763         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7764                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7765                 if (err)
7766                         goto err_out;
7767         }
7768
7769         return 0;
7770
7771 err_out:
7772         while (v_idx--)
7773                 i40e_free_q_vector(vsi, v_idx);
7774
7775         return err;
7776 }
7777
7778 /**
7779  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7780  * @pf: board private structure to initialize
7781  **/
7782 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7783 {
7784         int vectors = 0;
7785         ssize_t size;
7786
7787         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7788                 vectors = i40e_init_msix(pf);
7789                 if (vectors < 0) {
7790                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7791                                        I40E_FLAG_IWARP_ENABLED  |
7792 #ifdef I40E_FCOE
7793                                        I40E_FLAG_FCOE_ENABLED   |
7794 #endif
7795                                        I40E_FLAG_RSS_ENABLED    |
7796                                        I40E_FLAG_DCB_CAPABLE    |
7797                                        I40E_FLAG_SRIOV_ENABLED  |
7798                                        I40E_FLAG_FD_SB_ENABLED  |
7799                                        I40E_FLAG_FD_ATR_ENABLED |
7800                                        I40E_FLAG_VMDQ_ENABLED);
7801
7802                         /* rework the queue expectations without MSIX */
7803                         i40e_determine_queue_usage(pf);
7804                 }
7805         }
7806
7807         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7808             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7809                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7810                 vectors = pci_enable_msi(pf->pdev);
7811                 if (vectors < 0) {
7812                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7813                                  vectors);
7814                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7815                 }
7816                 vectors = 1;  /* one MSI or Legacy vector */
7817         }
7818
7819         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7820                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7821
7822         /* set up vector assignment tracking */
7823         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7824         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7825         if (!pf->irq_pile) {
7826                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7827                 return -ENOMEM;
7828         }
7829         pf->irq_pile->num_entries = vectors;
7830         pf->irq_pile->search_hint = 0;
7831
7832         /* track first vector for misc interrupts, ignore return */
7833         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7834
7835         return 0;
7836 }
7837
7838 /**
7839  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7840  * @pf: board private structure
7841  *
7842  * This sets up the handler for MSIX 0, which is used to manage the
7843  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7844  * when in MSI or Legacy interrupt mode.
7845  **/
7846 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7847 {
7848         struct i40e_hw *hw = &pf->hw;
7849         int err = 0;
7850
7851         /* Only request the irq if this is the first time through, and
7852          * not when we're rebuilding after a Reset
7853          */
7854         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7855                 err = request_irq(pf->msix_entries[0].vector,
7856                                   i40e_intr, 0, pf->int_name, pf);
7857                 if (err) {
7858                         dev_info(&pf->pdev->dev,
7859                                  "request_irq for %s failed: %d\n",
7860                                  pf->int_name, err);
7861                         return -EFAULT;
7862                 }
7863         }
7864
7865         i40e_enable_misc_int_causes(pf);
7866
7867         /* associate no queues to the misc vector */
7868         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7869         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7870
7871         i40e_flush(hw);
7872
7873         i40e_irq_dynamic_enable_icr0(pf, true);
7874
7875         return err;
7876 }
7877
7878 /**
7879  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7880  * @vsi: vsi structure
7881  * @seed: RSS hash seed
7882  **/
7883 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7884                               u8 *lut, u16 lut_size)
7885 {
7886         struct i40e_aqc_get_set_rss_key_data rss_key;
7887         struct i40e_pf *pf = vsi->back;
7888         struct i40e_hw *hw = &pf->hw;
7889         bool pf_lut = false;
7890         u8 *rss_lut;
7891         int ret, i;
7892
7893         memset(&rss_key, 0, sizeof(rss_key));
7894         memcpy(&rss_key, seed, sizeof(rss_key));
7895
7896         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7897         if (!rss_lut)
7898                 return -ENOMEM;
7899
7900         /* Populate the LUT with max no. of queues in round robin fashion */
7901         for (i = 0; i < vsi->rss_table_size; i++)
7902                 rss_lut[i] = i % vsi->rss_size;
7903
7904         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7905         if (ret) {
7906                 dev_info(&pf->pdev->dev,
7907                          "Cannot set RSS key, err %s aq_err %s\n",
7908                          i40e_stat_str(&pf->hw, ret),
7909                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7910                 goto config_rss_aq_out;
7911         }
7912
7913         if (vsi->type == I40E_VSI_MAIN)
7914                 pf_lut = true;
7915
7916         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7917                                   vsi->rss_table_size);
7918         if (ret)
7919                 dev_info(&pf->pdev->dev,
7920                          "Cannot set RSS lut, err %s aq_err %s\n",
7921                          i40e_stat_str(&pf->hw, ret),
7922                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7923
7924 config_rss_aq_out:
7925         kfree(rss_lut);
7926         return ret;
7927 }
7928
7929 /**
7930  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7931  * @vsi: VSI structure
7932  **/
7933 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7934 {
7935         u8 seed[I40E_HKEY_ARRAY_SIZE];
7936         struct i40e_pf *pf = vsi->back;
7937         u8 *lut;
7938         int ret;
7939
7940         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7941                 return 0;
7942
7943         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7944         if (!lut)
7945                 return -ENOMEM;
7946
7947         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7948         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7949         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7950         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7951         kfree(lut);
7952
7953         return ret;
7954 }
7955
7956 /**
7957  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
7958  * @vsi: Pointer to vsi structure
7959  * @seed: Buffter to store the hash keys
7960  * @lut: Buffer to store the lookup table entries
7961  * @lut_size: Size of buffer to store the lookup table entries
7962  *
7963  * Return 0 on success, negative on failure
7964  */
7965 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7966                            u8 *lut, u16 lut_size)
7967 {
7968         struct i40e_pf *pf = vsi->back;
7969         struct i40e_hw *hw = &pf->hw;
7970         int ret = 0;
7971
7972         if (seed) {
7973                 ret = i40e_aq_get_rss_key(hw, vsi->id,
7974                         (struct i40e_aqc_get_set_rss_key_data *)seed);
7975                 if (ret) {
7976                         dev_info(&pf->pdev->dev,
7977                                  "Cannot get RSS key, err %s aq_err %s\n",
7978                                  i40e_stat_str(&pf->hw, ret),
7979                                  i40e_aq_str(&pf->hw,
7980                                              pf->hw.aq.asq_last_status));
7981                         return ret;
7982                 }
7983         }
7984
7985         if (lut) {
7986                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
7987
7988                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
7989                 if (ret) {
7990                         dev_info(&pf->pdev->dev,
7991                                  "Cannot get RSS lut, err %s aq_err %s\n",
7992                                  i40e_stat_str(&pf->hw, ret),
7993                                  i40e_aq_str(&pf->hw,
7994                                              pf->hw.aq.asq_last_status));
7995                         return ret;
7996                 }
7997         }
7998
7999         return ret;
8000 }
8001
8002 /**
8003  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8004  * @vsi: Pointer to vsi structure
8005  * @seed: RSS hash seed
8006  * @lut: Lookup table
8007  * @lut_size: Lookup table size
8008  *
8009  * Returns 0 on success, negative on failure
8010  **/
8011 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8012                                const u8 *lut, u16 lut_size)
8013 {
8014         struct i40e_pf *pf = vsi->back;
8015         struct i40e_hw *hw = &pf->hw;
8016         u16 vf_id = vsi->vf_id;
8017         u8 i;
8018
8019         /* Fill out hash function seed */
8020         if (seed) {
8021                 u32 *seed_dw = (u32 *)seed;
8022
8023                 if (vsi->type == I40E_VSI_MAIN) {
8024                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8025                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8026                                                   seed_dw[i]);
8027                 } else if (vsi->type == I40E_VSI_SRIOV) {
8028                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8029                                 i40e_write_rx_ctl(hw,
8030                                                   I40E_VFQF_HKEY1(i, vf_id),
8031                                                   seed_dw[i]);
8032                 } else {
8033                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8034                 }
8035         }
8036
8037         if (lut) {
8038                 u32 *lut_dw = (u32 *)lut;
8039
8040                 if (vsi->type == I40E_VSI_MAIN) {
8041                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8042                                 return -EINVAL;
8043                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8044                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8045                 } else if (vsi->type == I40E_VSI_SRIOV) {
8046                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8047                                 return -EINVAL;
8048                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8049                                 i40e_write_rx_ctl(hw,
8050                                                   I40E_VFQF_HLUT1(i, vf_id),
8051                                                   lut_dw[i]);
8052                 } else {
8053                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8054                 }
8055         }
8056         i40e_flush(hw);
8057
8058         return 0;
8059 }
8060
8061 /**
8062  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8063  * @vsi: Pointer to VSI structure
8064  * @seed: Buffer to store the keys
8065  * @lut: Buffer to store the lookup table entries
8066  * @lut_size: Size of buffer to store the lookup table entries
8067  *
8068  * Returns 0 on success, negative on failure
8069  */
8070 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8071                             u8 *lut, u16 lut_size)
8072 {
8073         struct i40e_pf *pf = vsi->back;
8074         struct i40e_hw *hw = &pf->hw;
8075         u16 i;
8076
8077         if (seed) {
8078                 u32 *seed_dw = (u32 *)seed;
8079
8080                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8081                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8082         }
8083         if (lut) {
8084                 u32 *lut_dw = (u32 *)lut;
8085
8086                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8087                         return -EINVAL;
8088                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8089                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8090         }
8091
8092         return 0;
8093 }
8094
8095 /**
8096  * i40e_config_rss - Configure RSS keys and lut
8097  * @vsi: Pointer to VSI structure
8098  * @seed: RSS hash seed
8099  * @lut: Lookup table
8100  * @lut_size: Lookup table size
8101  *
8102  * Returns 0 on success, negative on failure
8103  */
8104 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8105 {
8106         struct i40e_pf *pf = vsi->back;
8107
8108         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8109                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8110         else
8111                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8112 }
8113
8114 /**
8115  * i40e_get_rss - Get RSS keys and lut
8116  * @vsi: Pointer to VSI structure
8117  * @seed: Buffer to store the keys
8118  * @lut: Buffer to store the lookup table entries
8119  * lut_size: Size of buffer to store the lookup table entries
8120  *
8121  * Returns 0 on success, negative on failure
8122  */
8123 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8124 {
8125         struct i40e_pf *pf = vsi->back;
8126
8127         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8128                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8129         else
8130                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8131 }
8132
8133 /**
8134  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8135  * @pf: Pointer to board private structure
8136  * @lut: Lookup table
8137  * @rss_table_size: Lookup table size
8138  * @rss_size: Range of queue number for hashing
8139  */
8140 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8141                               u16 rss_table_size, u16 rss_size)
8142 {
8143         u16 i;
8144
8145         for (i = 0; i < rss_table_size; i++)
8146                 lut[i] = i % rss_size;
8147 }
8148
8149 /**
8150  * i40e_pf_config_rss - Prepare for RSS if used
8151  * @pf: board private structure
8152  **/
8153 static int i40e_pf_config_rss(struct i40e_pf *pf)
8154 {
8155         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8156         u8 seed[I40E_HKEY_ARRAY_SIZE];
8157         u8 *lut;
8158         struct i40e_hw *hw = &pf->hw;
8159         u32 reg_val;
8160         u64 hena;
8161         int ret;
8162
8163         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8164         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8165                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8166         hena |= i40e_pf_get_default_rss_hena(pf);
8167
8168         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8169         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8170
8171         /* Determine the RSS table size based on the hardware capabilities */
8172         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8173         reg_val = (pf->rss_table_size == 512) ?
8174                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8175                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8176         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8177
8178         /* Determine the RSS size of the VSI */
8179         if (!vsi->rss_size)
8180                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8181                                       vsi->num_queue_pairs);
8182
8183         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8184         if (!lut)
8185                 return -ENOMEM;
8186
8187         /* Use user configured lut if there is one, otherwise use default */
8188         if (vsi->rss_lut_user)
8189                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8190         else
8191                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8192
8193         /* Use user configured hash key if there is one, otherwise
8194          * use default.
8195          */
8196         if (vsi->rss_hkey_user)
8197                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8198         else
8199                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8200         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8201         kfree(lut);
8202
8203         return ret;
8204 }
8205
8206 /**
8207  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8208  * @pf: board private structure
8209  * @queue_count: the requested queue count for rss.
8210  *
8211  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8212  * count which may be different from the requested queue count.
8213  **/
8214 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8215 {
8216         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8217         int new_rss_size;
8218
8219         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8220                 return 0;
8221
8222         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8223
8224         if (queue_count != vsi->num_queue_pairs) {
8225                 vsi->req_queue_pairs = queue_count;
8226                 i40e_prep_for_reset(pf);
8227
8228                 pf->alloc_rss_size = new_rss_size;
8229
8230                 i40e_reset_and_rebuild(pf, true);
8231
8232                 /* Discard the user configured hash keys and lut, if less
8233                  * queues are enabled.
8234                  */
8235                 if (queue_count < vsi->rss_size) {
8236                         i40e_clear_rss_config_user(vsi);
8237                         dev_dbg(&pf->pdev->dev,
8238                                 "discard user configured hash keys and lut\n");
8239                 }
8240
8241                 /* Reset vsi->rss_size, as number of enabled queues changed */
8242                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8243                                       vsi->num_queue_pairs);
8244
8245                 i40e_pf_config_rss(pf);
8246         }
8247         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8248                  pf->alloc_rss_size, pf->rss_size_max);
8249         return pf->alloc_rss_size;
8250 }
8251
8252 /**
8253  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8254  * @pf: board private structure
8255  **/
8256 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8257 {
8258         i40e_status status;
8259         bool min_valid, max_valid;
8260         u32 max_bw, min_bw;
8261
8262         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8263                                            &min_valid, &max_valid);
8264
8265         if (!status) {
8266                 if (min_valid)
8267                         pf->npar_min_bw = min_bw;
8268                 if (max_valid)
8269                         pf->npar_max_bw = max_bw;
8270         }
8271
8272         return status;
8273 }
8274
8275 /**
8276  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8277  * @pf: board private structure
8278  **/
8279 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8280 {
8281         struct i40e_aqc_configure_partition_bw_data bw_data;
8282         i40e_status status;
8283
8284         /* Set the valid bit for this PF */
8285         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8286         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8287         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8288
8289         /* Set the new bandwidths */
8290         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8291
8292         return status;
8293 }
8294
8295 /**
8296  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8297  * @pf: board private structure
8298  **/
8299 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8300 {
8301         /* Commit temporary BW setting to permanent NVM image */
8302         enum i40e_admin_queue_err last_aq_status;
8303         i40e_status ret;
8304         u16 nvm_word;
8305
8306         if (pf->hw.partition_id != 1) {
8307                 dev_info(&pf->pdev->dev,
8308                          "Commit BW only works on partition 1! This is partition %d",
8309                          pf->hw.partition_id);
8310                 ret = I40E_NOT_SUPPORTED;
8311                 goto bw_commit_out;
8312         }
8313
8314         /* Acquire NVM for read access */
8315         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8316         last_aq_status = pf->hw.aq.asq_last_status;
8317         if (ret) {
8318                 dev_info(&pf->pdev->dev,
8319                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8320                          i40e_stat_str(&pf->hw, ret),
8321                          i40e_aq_str(&pf->hw, last_aq_status));
8322                 goto bw_commit_out;
8323         }
8324
8325         /* Read word 0x10 of NVM - SW compatibility word 1 */
8326         ret = i40e_aq_read_nvm(&pf->hw,
8327                                I40E_SR_NVM_CONTROL_WORD,
8328                                0x10, sizeof(nvm_word), &nvm_word,
8329                                false, NULL);
8330         /* Save off last admin queue command status before releasing
8331          * the NVM
8332          */
8333         last_aq_status = pf->hw.aq.asq_last_status;
8334         i40e_release_nvm(&pf->hw);
8335         if (ret) {
8336                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8337                          i40e_stat_str(&pf->hw, ret),
8338                          i40e_aq_str(&pf->hw, last_aq_status));
8339                 goto bw_commit_out;
8340         }
8341
8342         /* Wait a bit for NVM release to complete */
8343         msleep(50);
8344
8345         /* Acquire NVM for write access */
8346         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8347         last_aq_status = pf->hw.aq.asq_last_status;
8348         if (ret) {
8349                 dev_info(&pf->pdev->dev,
8350                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8351                          i40e_stat_str(&pf->hw, ret),
8352                          i40e_aq_str(&pf->hw, last_aq_status));
8353                 goto bw_commit_out;
8354         }
8355         /* Write it back out unchanged to initiate update NVM,
8356          * which will force a write of the shadow (alt) RAM to
8357          * the NVM - thus storing the bandwidth values permanently.
8358          */
8359         ret = i40e_aq_update_nvm(&pf->hw,
8360                                  I40E_SR_NVM_CONTROL_WORD,
8361                                  0x10, sizeof(nvm_word),
8362                                  &nvm_word, true, NULL);
8363         /* Save off last admin queue command status before releasing
8364          * the NVM
8365          */
8366         last_aq_status = pf->hw.aq.asq_last_status;
8367         i40e_release_nvm(&pf->hw);
8368         if (ret)
8369                 dev_info(&pf->pdev->dev,
8370                          "BW settings NOT SAVED, err %s aq_err %s\n",
8371                          i40e_stat_str(&pf->hw, ret),
8372                          i40e_aq_str(&pf->hw, last_aq_status));
8373 bw_commit_out:
8374
8375         return ret;
8376 }
8377
8378 /**
8379  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8380  * @pf: board private structure to initialize
8381  *
8382  * i40e_sw_init initializes the Adapter private data structure.
8383  * Fields are initialized based on PCI device information and
8384  * OS network device settings (MTU size).
8385  **/
8386 static int i40e_sw_init(struct i40e_pf *pf)
8387 {
8388         int err = 0;
8389         int size;
8390
8391         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8392                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8393         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8394                 if (I40E_DEBUG_USER & debug)
8395                         pf->hw.debug_mask = debug;
8396                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8397                                                 I40E_DEFAULT_MSG_ENABLE);
8398         }
8399
8400         /* Set default capability flags */
8401         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8402                     I40E_FLAG_MSI_ENABLED     |
8403                     I40E_FLAG_MSIX_ENABLED;
8404
8405         /* Set default ITR */
8406         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8407         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8408
8409         /* Depending on PF configurations, it is possible that the RSS
8410          * maximum might end up larger than the available queues
8411          */
8412         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8413         pf->alloc_rss_size = 1;
8414         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8415         pf->rss_size_max = min_t(int, pf->rss_size_max,
8416                                  pf->hw.func_caps.num_tx_qp);
8417         if (pf->hw.func_caps.rss) {
8418                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8419                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8420                                            num_online_cpus());
8421         }
8422
8423         /* MFP mode enabled */
8424         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8425                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8426                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8427                 if (i40e_get_npar_bw_setting(pf))
8428                         dev_warn(&pf->pdev->dev,
8429                                  "Could not get NPAR bw settings\n");
8430                 else
8431                         dev_info(&pf->pdev->dev,
8432                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8433                                  pf->npar_min_bw, pf->npar_max_bw);
8434         }
8435
8436         /* FW/NVM is not yet fixed in this regard */
8437         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8438             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8439                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8440                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8441                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8442                     pf->hw.num_partitions > 1)
8443                         dev_info(&pf->pdev->dev,
8444                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8445                 else
8446                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8447                 pf->fdir_pf_filter_count =
8448                                  pf->hw.func_caps.fd_filters_guaranteed;
8449                 pf->hw.fdir_shared_filter_count =
8450                                  pf->hw.func_caps.fd_filters_best_effort;
8451         }
8452
8453         if (i40e_is_mac_710(&pf->hw) &&
8454             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8455             (pf->hw.aq.fw_maj_ver < 4))) {
8456                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8457                 /* No DCB support  for FW < v4.33 */
8458                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8459         }
8460
8461         /* Disable FW LLDP if FW < v4.3 */
8462         if (i40e_is_mac_710(&pf->hw) &&
8463             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8464             (pf->hw.aq.fw_maj_ver < 4)))
8465                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8466
8467         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8468         if (i40e_is_mac_710(&pf->hw) &&
8469             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8470             (pf->hw.aq.fw_maj_ver >= 5)))
8471                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8472
8473         if (pf->hw.func_caps.vmdq) {
8474                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8475                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8476                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8477         }
8478
8479         if (pf->hw.func_caps.iwarp) {
8480                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8481                 /* IWARP needs one extra vector for CQP just like MISC.*/
8482                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8483         }
8484
8485 #ifdef I40E_FCOE
8486         i40e_init_pf_fcoe(pf);
8487
8488 #endif /* I40E_FCOE */
8489 #ifdef CONFIG_PCI_IOV
8490         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8491                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8492                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8493                 pf->num_req_vfs = min_t(int,
8494                                         pf->hw.func_caps.num_vfs,
8495                                         I40E_MAX_VF_COUNT);
8496         }
8497 #endif /* CONFIG_PCI_IOV */
8498         if (pf->hw.mac.type == I40E_MAC_X722) {
8499                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8500                              I40E_FLAG_128_QP_RSS_CAPABLE |
8501                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8502                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8503                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8504                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8505                              I40E_FLAG_NO_PCI_LINK_CHECK |
8506                              I40E_FLAG_100M_SGMII_CAPABLE |
8507                              I40E_FLAG_USE_SET_LLDP_MIB |
8508                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8509         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8510                    ((pf->hw.aq.api_maj_ver == 1) &&
8511                     (pf->hw.aq.api_min_ver > 4))) {
8512                 /* Supported in FW API version higher than 1.4 */
8513                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8514                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8515         } else {
8516                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8517         }
8518
8519         pf->eeprom_version = 0xDEAD;
8520         pf->lan_veb = I40E_NO_VEB;
8521         pf->lan_vsi = I40E_NO_VSI;
8522
8523         /* By default FW has this off for performance reasons */
8524         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8525
8526         /* set up queue assignment tracking */
8527         size = sizeof(struct i40e_lump_tracking)
8528                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8529         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8530         if (!pf->qp_pile) {
8531                 err = -ENOMEM;
8532                 goto sw_init_done;
8533         }
8534         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8535         pf->qp_pile->search_hint = 0;
8536
8537         pf->tx_timeout_recovery_level = 1;
8538
8539         mutex_init(&pf->switch_mutex);
8540
8541         /* If NPAR is enabled nudge the Tx scheduler */
8542         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8543                 i40e_set_npar_bw_setting(pf);
8544
8545 sw_init_done:
8546         return err;
8547 }
8548
8549 /**
8550  * i40e_set_ntuple - set the ntuple feature flag and take action
8551  * @pf: board private structure to initialize
8552  * @features: the feature set that the stack is suggesting
8553  *
8554  * returns a bool to indicate if reset needs to happen
8555  **/
8556 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8557 {
8558         bool need_reset = false;
8559
8560         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8561          * the state changed, we need to reset.
8562          */
8563         if (features & NETIF_F_NTUPLE) {
8564                 /* Enable filters and mark for reset */
8565                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8566                         need_reset = true;
8567                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8568         } else {
8569                 /* turn off filters, mark for reset and clear SW filter list */
8570                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8571                         need_reset = true;
8572                         i40e_fdir_filter_exit(pf);
8573                 }
8574                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8575                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8576                 /* reset fd counters */
8577                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8578                 pf->fdir_pf_active_filters = 0;
8579                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8580                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8581                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8582                 /* if ATR was auto disabled it can be re-enabled. */
8583                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8584                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8585                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8586         }
8587         return need_reset;
8588 }
8589
8590 /**
8591  * i40e_set_features - set the netdev feature flags
8592  * @netdev: ptr to the netdev being adjusted
8593  * @features: the feature set that the stack is suggesting
8594  **/
8595 static int i40e_set_features(struct net_device *netdev,
8596                              netdev_features_t features)
8597 {
8598         struct i40e_netdev_priv *np = netdev_priv(netdev);
8599         struct i40e_vsi *vsi = np->vsi;
8600         struct i40e_pf *pf = vsi->back;
8601         bool need_reset;
8602
8603         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8604                 i40e_vlan_stripping_enable(vsi);
8605         else
8606                 i40e_vlan_stripping_disable(vsi);
8607
8608         need_reset = i40e_set_ntuple(pf, features);
8609
8610         if (need_reset)
8611                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8612
8613         return 0;
8614 }
8615
8616 /**
8617  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8618  * @pf: board private structure
8619  * @port: The UDP port to look up
8620  *
8621  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8622  **/
8623 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8624 {
8625         u8 i;
8626
8627         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8628                 if (pf->udp_ports[i].index == port)
8629                         return i;
8630         }
8631
8632         return i;
8633 }
8634
8635 /**
8636  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8637  * @netdev: This physical port's netdev
8638  * @ti: Tunnel endpoint information
8639  **/
8640 static void i40e_udp_tunnel_add(struct net_device *netdev,
8641                                 struct udp_tunnel_info *ti)
8642 {
8643         struct i40e_netdev_priv *np = netdev_priv(netdev);
8644         struct i40e_vsi *vsi = np->vsi;
8645         struct i40e_pf *pf = vsi->back;
8646         __be16 port = ti->port;
8647         u8 next_idx;
8648         u8 idx;
8649
8650         idx = i40e_get_udp_port_idx(pf, port);
8651
8652         /* Check if port already exists */
8653         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8654                 netdev_info(netdev, "port %d already offloaded\n",
8655                             ntohs(port));
8656                 return;
8657         }
8658
8659         /* Now check if there is space to add the new port */
8660         next_idx = i40e_get_udp_port_idx(pf, 0);
8661
8662         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8663                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8664                             ntohs(port));
8665                 return;
8666         }
8667
8668         switch (ti->type) {
8669         case UDP_TUNNEL_TYPE_VXLAN:
8670                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8671                 break;
8672         case UDP_TUNNEL_TYPE_GENEVE:
8673                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8674                         return;
8675                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8676                 break;
8677         default:
8678                 return;
8679         }
8680
8681         /* New port: add it and mark its index in the bitmap */
8682         pf->udp_ports[next_idx].index = port;
8683         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8684         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8685 }
8686
8687 /**
8688  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8689  * @netdev: This physical port's netdev
8690  * @ti: Tunnel endpoint information
8691  **/
8692 static void i40e_udp_tunnel_del(struct net_device *netdev,
8693                                 struct udp_tunnel_info *ti)
8694 {
8695         struct i40e_netdev_priv *np = netdev_priv(netdev);
8696         struct i40e_vsi *vsi = np->vsi;
8697         struct i40e_pf *pf = vsi->back;
8698         __be16 port = ti->port;
8699         u8 idx;
8700
8701         idx = i40e_get_udp_port_idx(pf, port);
8702
8703         /* Check if port already exists */
8704         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8705                 goto not_found;
8706
8707         switch (ti->type) {
8708         case UDP_TUNNEL_TYPE_VXLAN:
8709                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8710                         goto not_found;
8711                 break;
8712         case UDP_TUNNEL_TYPE_GENEVE:
8713                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8714                         goto not_found;
8715                 break;
8716         default:
8717                 goto not_found;
8718         }
8719
8720         /* if port exists, set it to 0 (mark for deletion)
8721          * and make it pending
8722          */
8723         pf->udp_ports[idx].index = 0;
8724         pf->pending_udp_bitmap |= BIT_ULL(idx);
8725         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8726
8727         return;
8728 not_found:
8729         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8730                     ntohs(port));
8731 }
8732
8733 static int i40e_get_phys_port_id(struct net_device *netdev,
8734                                  struct netdev_phys_item_id *ppid)
8735 {
8736         struct i40e_netdev_priv *np = netdev_priv(netdev);
8737         struct i40e_pf *pf = np->vsi->back;
8738         struct i40e_hw *hw = &pf->hw;
8739
8740         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8741                 return -EOPNOTSUPP;
8742
8743         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8744         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8745
8746         return 0;
8747 }
8748
8749 /**
8750  * i40e_ndo_fdb_add - add an entry to the hardware database
8751  * @ndm: the input from the stack
8752  * @tb: pointer to array of nladdr (unused)
8753  * @dev: the net device pointer
8754  * @addr: the MAC address entry being added
8755  * @flags: instructions from stack about fdb operation
8756  */
8757 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8758                             struct net_device *dev,
8759                             const unsigned char *addr, u16 vid,
8760                             u16 flags)
8761 {
8762         struct i40e_netdev_priv *np = netdev_priv(dev);
8763         struct i40e_pf *pf = np->vsi->back;
8764         int err = 0;
8765
8766         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8767                 return -EOPNOTSUPP;
8768
8769         if (vid) {
8770                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8771                 return -EINVAL;
8772         }
8773
8774         /* Hardware does not support aging addresses so if a
8775          * ndm_state is given only allow permanent addresses
8776          */
8777         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8778                 netdev_info(dev, "FDB only supports static addresses\n");
8779                 return -EINVAL;
8780         }
8781
8782         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8783                 err = dev_uc_add_excl(dev, addr);
8784         else if (is_multicast_ether_addr(addr))
8785                 err = dev_mc_add_excl(dev, addr);
8786         else
8787                 err = -EINVAL;
8788
8789         /* Only return duplicate errors if NLM_F_EXCL is set */
8790         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8791                 err = 0;
8792
8793         return err;
8794 }
8795
8796 /**
8797  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8798  * @dev: the netdev being configured
8799  * @nlh: RTNL message
8800  *
8801  * Inserts a new hardware bridge if not already created and
8802  * enables the bridging mode requested (VEB or VEPA). If the
8803  * hardware bridge has already been inserted and the request
8804  * is to change the mode then that requires a PF reset to
8805  * allow rebuild of the components with required hardware
8806  * bridge mode enabled.
8807  **/
8808 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8809                                    struct nlmsghdr *nlh,
8810                                    u16 flags)
8811 {
8812         struct i40e_netdev_priv *np = netdev_priv(dev);
8813         struct i40e_vsi *vsi = np->vsi;
8814         struct i40e_pf *pf = vsi->back;
8815         struct i40e_veb *veb = NULL;
8816         struct nlattr *attr, *br_spec;
8817         int i, rem;
8818
8819         /* Only for PF VSI for now */
8820         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8821                 return -EOPNOTSUPP;
8822
8823         /* Find the HW bridge for PF VSI */
8824         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8825                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8826                         veb = pf->veb[i];
8827         }
8828
8829         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8830
8831         nla_for_each_nested(attr, br_spec, rem) {
8832                 __u16 mode;
8833
8834                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8835                         continue;
8836
8837                 mode = nla_get_u16(attr);
8838                 if ((mode != BRIDGE_MODE_VEPA) &&
8839                     (mode != BRIDGE_MODE_VEB))
8840                         return -EINVAL;
8841
8842                 /* Insert a new HW bridge */
8843                 if (!veb) {
8844                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8845                                              vsi->tc_config.enabled_tc);
8846                         if (veb) {
8847                                 veb->bridge_mode = mode;
8848                                 i40e_config_bridge_mode(veb);
8849                         } else {
8850                                 /* No Bridge HW offload available */
8851                                 return -ENOENT;
8852                         }
8853                         break;
8854                 } else if (mode != veb->bridge_mode) {
8855                         /* Existing HW bridge but different mode needs reset */
8856                         veb->bridge_mode = mode;
8857                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8858                         if (mode == BRIDGE_MODE_VEB)
8859                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8860                         else
8861                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8862                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8863                         break;
8864                 }
8865         }
8866
8867         return 0;
8868 }
8869
8870 /**
8871  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8872  * @skb: skb buff
8873  * @pid: process id
8874  * @seq: RTNL message seq #
8875  * @dev: the netdev being configured
8876  * @filter_mask: unused
8877  * @nlflags: netlink flags passed in
8878  *
8879  * Return the mode in which the hardware bridge is operating in
8880  * i.e VEB or VEPA.
8881  **/
8882 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8883                                    struct net_device *dev,
8884                                    u32 __always_unused filter_mask,
8885                                    int nlflags)
8886 {
8887         struct i40e_netdev_priv *np = netdev_priv(dev);
8888         struct i40e_vsi *vsi = np->vsi;
8889         struct i40e_pf *pf = vsi->back;
8890         struct i40e_veb *veb = NULL;
8891         int i;
8892
8893         /* Only for PF VSI for now */
8894         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8895                 return -EOPNOTSUPP;
8896
8897         /* Find the HW bridge for the PF VSI */
8898         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8899                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8900                         veb = pf->veb[i];
8901         }
8902
8903         if (!veb)
8904                 return 0;
8905
8906         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8907                                        nlflags, 0, 0, filter_mask, NULL);
8908 }
8909
8910 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8911  * inner mac plus all inner ethertypes.
8912  */
8913 #define I40E_MAX_TUNNEL_HDR_LEN 128
8914 /**
8915  * i40e_features_check - Validate encapsulated packet conforms to limits
8916  * @skb: skb buff
8917  * @dev: This physical port's netdev
8918  * @features: Offload features that the stack believes apply
8919  **/
8920 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8921                                              struct net_device *dev,
8922                                              netdev_features_t features)
8923 {
8924         if (skb->encapsulation &&
8925             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
8926              I40E_MAX_TUNNEL_HDR_LEN))
8927                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8928
8929         return features;
8930 }
8931
8932 static const struct net_device_ops i40e_netdev_ops = {
8933         .ndo_open               = i40e_open,
8934         .ndo_stop               = i40e_close,
8935         .ndo_start_xmit         = i40e_lan_xmit_frame,
8936         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8937         .ndo_set_rx_mode        = i40e_set_rx_mode,
8938         .ndo_validate_addr      = eth_validate_addr,
8939         .ndo_set_mac_address    = i40e_set_mac,
8940         .ndo_change_mtu         = i40e_change_mtu,
8941         .ndo_do_ioctl           = i40e_ioctl,
8942         .ndo_tx_timeout         = i40e_tx_timeout,
8943         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8944         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8945 #ifdef CONFIG_NET_POLL_CONTROLLER
8946         .ndo_poll_controller    = i40e_netpoll,
8947 #endif
8948         .ndo_setup_tc           = __i40e_setup_tc,
8949 #ifdef I40E_FCOE
8950         .ndo_fcoe_enable        = i40e_fcoe_enable,
8951         .ndo_fcoe_disable       = i40e_fcoe_disable,
8952 #endif
8953         .ndo_set_features       = i40e_set_features,
8954         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8955         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8956         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8957         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8958         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8959         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8960         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
8961         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
8962         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
8963         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8964         .ndo_fdb_add            = i40e_ndo_fdb_add,
8965         .ndo_features_check     = i40e_features_check,
8966         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8967         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8968 };
8969
8970 /**
8971  * i40e_config_netdev - Setup the netdev flags
8972  * @vsi: the VSI being configured
8973  *
8974  * Returns 0 on success, negative value on failure
8975  **/
8976 static int i40e_config_netdev(struct i40e_vsi *vsi)
8977 {
8978         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8979         struct i40e_pf *pf = vsi->back;
8980         struct i40e_hw *hw = &pf->hw;
8981         struct i40e_netdev_priv *np;
8982         struct net_device *netdev;
8983         u8 mac_addr[ETH_ALEN];
8984         int etherdev_size;
8985
8986         etherdev_size = sizeof(struct i40e_netdev_priv);
8987         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8988         if (!netdev)
8989                 return -ENOMEM;
8990
8991         vsi->netdev = netdev;
8992         np = netdev_priv(netdev);
8993         np->vsi = vsi;
8994
8995         netdev->hw_enc_features |= NETIF_F_SG                   |
8996                                    NETIF_F_IP_CSUM              |
8997                                    NETIF_F_IPV6_CSUM            |
8998                                    NETIF_F_HIGHDMA              |
8999                                    NETIF_F_SOFT_FEATURES        |
9000                                    NETIF_F_TSO                  |
9001                                    NETIF_F_TSO_ECN              |
9002                                    NETIF_F_TSO6                 |
9003                                    NETIF_F_GSO_GRE              |
9004                                    NETIF_F_GSO_GRE_CSUM         |
9005                                    NETIF_F_GSO_IPXIP4           |
9006                                    NETIF_F_GSO_IPXIP6           |
9007                                    NETIF_F_GSO_UDP_TUNNEL       |
9008                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9009                                    NETIF_F_GSO_PARTIAL          |
9010                                    NETIF_F_SCTP_CRC             |
9011                                    NETIF_F_RXHASH               |
9012                                    NETIF_F_RXCSUM               |
9013                                    0;
9014
9015         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9016                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9017
9018         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9019
9020         /* record features VLANs can make use of */
9021         netdev->vlan_features |= netdev->hw_enc_features |
9022                                  NETIF_F_TSO_MANGLEID;
9023
9024         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9025                 netdev->hw_features |= NETIF_F_NTUPLE;
9026
9027         netdev->hw_features |= netdev->hw_enc_features  |
9028                                NETIF_F_HW_VLAN_CTAG_TX  |
9029                                NETIF_F_HW_VLAN_CTAG_RX;
9030
9031         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9032         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9033
9034         if (vsi->type == I40E_VSI_MAIN) {
9035                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9036                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9037                 /* The following steps are necessary to prevent reception
9038                  * of tagged packets - some older NVM configurations load a
9039                  * default a MAC-VLAN filter that accepts any tagged packet
9040                  * which must be replaced by a normal filter.
9041                  */
9042                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9043                         spin_lock_bh(&vsi->mac_filter_list_lock);
9044                         i40e_add_filter(vsi, mac_addr,
9045                                         I40E_VLAN_ANY, false, true);
9046                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9047                 }
9048         } else if ((pf->hw.aq.api_maj_ver > 1) ||
9049                    ((pf->hw.aq.api_maj_ver == 1) &&
9050                     (pf->hw.aq.api_min_ver > 4))) {
9051                 /* Supported in FW API version higher than 1.4 */
9052                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
9053                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
9054         } else {
9055                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9056                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9057                          pf->vsi[pf->lan_vsi]->netdev->name);
9058                 random_ether_addr(mac_addr);
9059
9060                 spin_lock_bh(&vsi->mac_filter_list_lock);
9061                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9062                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9063         }
9064
9065         spin_lock_bh(&vsi->mac_filter_list_lock);
9066         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9067         spin_unlock_bh(&vsi->mac_filter_list_lock);
9068
9069         ether_addr_copy(netdev->dev_addr, mac_addr);
9070         ether_addr_copy(netdev->perm_addr, mac_addr);
9071
9072         netdev->priv_flags |= IFF_UNICAST_FLT;
9073         netdev->priv_flags |= IFF_SUPP_NOFCS;
9074         /* Setup netdev TC information */
9075         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9076
9077         netdev->netdev_ops = &i40e_netdev_ops;
9078         netdev->watchdog_timeo = 5 * HZ;
9079         i40e_set_ethtool_ops(netdev);
9080 #ifdef I40E_FCOE
9081         i40e_fcoe_config_netdev(netdev, vsi);
9082 #endif
9083
9084         return 0;
9085 }
9086
9087 /**
9088  * i40e_vsi_delete - Delete a VSI from the switch
9089  * @vsi: the VSI being removed
9090  *
9091  * Returns 0 on success, negative value on failure
9092  **/
9093 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9094 {
9095         /* remove default VSI is not allowed */
9096         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9097                 return;
9098
9099         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9100 }
9101
9102 /**
9103  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9104  * @vsi: the VSI being queried
9105  *
9106  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9107  **/
9108 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9109 {
9110         struct i40e_veb *veb;
9111         struct i40e_pf *pf = vsi->back;
9112
9113         /* Uplink is not a bridge so default to VEB */
9114         if (vsi->veb_idx == I40E_NO_VEB)
9115                 return 1;
9116
9117         veb = pf->veb[vsi->veb_idx];
9118         if (!veb) {
9119                 dev_info(&pf->pdev->dev,
9120                          "There is no veb associated with the bridge\n");
9121                 return -ENOENT;
9122         }
9123
9124         /* Uplink is a bridge in VEPA mode */
9125         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9126                 return 0;
9127         } else {
9128                 /* Uplink is a bridge in VEB mode */
9129                 return 1;
9130         }
9131
9132         /* VEPA is now default bridge, so return 0 */
9133         return 0;
9134 }
9135
9136 /**
9137  * i40e_add_vsi - Add a VSI to the switch
9138  * @vsi: the VSI being configured
9139  *
9140  * This initializes a VSI context depending on the VSI type to be added and
9141  * passes it down to the add_vsi aq command.
9142  **/
9143 static int i40e_add_vsi(struct i40e_vsi *vsi)
9144 {
9145         int ret = -ENODEV;
9146         u8 laa_macaddr[ETH_ALEN];
9147         bool found_laa_mac_filter = false;
9148         struct i40e_pf *pf = vsi->back;
9149         struct i40e_hw *hw = &pf->hw;
9150         struct i40e_vsi_context ctxt;
9151         struct i40e_mac_filter *f, *ftmp;
9152
9153         u8 enabled_tc = 0x1; /* TC0 enabled */
9154         int f_count = 0;
9155
9156         memset(&ctxt, 0, sizeof(ctxt));
9157         switch (vsi->type) {
9158         case I40E_VSI_MAIN:
9159                 /* The PF's main VSI is already setup as part of the
9160                  * device initialization, so we'll not bother with
9161                  * the add_vsi call, but we will retrieve the current
9162                  * VSI context.
9163                  */
9164                 ctxt.seid = pf->main_vsi_seid;
9165                 ctxt.pf_num = pf->hw.pf_id;
9166                 ctxt.vf_num = 0;
9167                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9168                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9169                 if (ret) {
9170                         dev_info(&pf->pdev->dev,
9171                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9172                                  i40e_stat_str(&pf->hw, ret),
9173                                  i40e_aq_str(&pf->hw,
9174                                              pf->hw.aq.asq_last_status));
9175                         return -ENOENT;
9176                 }
9177                 vsi->info = ctxt.info;
9178                 vsi->info.valid_sections = 0;
9179
9180                 vsi->seid = ctxt.seid;
9181                 vsi->id = ctxt.vsi_number;
9182
9183                 enabled_tc = i40e_pf_get_tc_map(pf);
9184
9185                 /* MFP mode setup queue map and update VSI */
9186                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9187                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9188                         memset(&ctxt, 0, sizeof(ctxt));
9189                         ctxt.seid = pf->main_vsi_seid;
9190                         ctxt.pf_num = pf->hw.pf_id;
9191                         ctxt.vf_num = 0;
9192                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9193                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9194                         if (ret) {
9195                                 dev_info(&pf->pdev->dev,
9196                                          "update vsi failed, err %s aq_err %s\n",
9197                                          i40e_stat_str(&pf->hw, ret),
9198                                          i40e_aq_str(&pf->hw,
9199                                                     pf->hw.aq.asq_last_status));
9200                                 ret = -ENOENT;
9201                                 goto err;
9202                         }
9203                         /* update the local VSI info queue map */
9204                         i40e_vsi_update_queue_map(vsi, &ctxt);
9205                         vsi->info.valid_sections = 0;
9206                 } else {
9207                         /* Default/Main VSI is only enabled for TC0
9208                          * reconfigure it to enable all TCs that are
9209                          * available on the port in SFP mode.
9210                          * For MFP case the iSCSI PF would use this
9211                          * flow to enable LAN+iSCSI TC.
9212                          */
9213                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9214                         if (ret) {
9215                                 dev_info(&pf->pdev->dev,
9216                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9217                                          enabled_tc,
9218                                          i40e_stat_str(&pf->hw, ret),
9219                                          i40e_aq_str(&pf->hw,
9220                                                     pf->hw.aq.asq_last_status));
9221                                 ret = -ENOENT;
9222                         }
9223                 }
9224                 break;
9225
9226         case I40E_VSI_FDIR:
9227                 ctxt.pf_num = hw->pf_id;
9228                 ctxt.vf_num = 0;
9229                 ctxt.uplink_seid = vsi->uplink_seid;
9230                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9231                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9232                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9233                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9234                         ctxt.info.valid_sections |=
9235                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9236                         ctxt.info.switch_id =
9237                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9238                 }
9239                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9240                 break;
9241
9242         case I40E_VSI_VMDQ2:
9243                 ctxt.pf_num = hw->pf_id;
9244                 ctxt.vf_num = 0;
9245                 ctxt.uplink_seid = vsi->uplink_seid;
9246                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9247                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9248
9249                 /* This VSI is connected to VEB so the switch_id
9250                  * should be set to zero by default.
9251                  */
9252                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9253                         ctxt.info.valid_sections |=
9254                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9255                         ctxt.info.switch_id =
9256                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9257                 }
9258
9259                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9260                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9261                 break;
9262
9263         case I40E_VSI_SRIOV:
9264                 ctxt.pf_num = hw->pf_id;
9265                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9266                 ctxt.uplink_seid = vsi->uplink_seid;
9267                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9268                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9269
9270                 /* This VSI is connected to VEB so the switch_id
9271                  * should be set to zero by default.
9272                  */
9273                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9274                         ctxt.info.valid_sections |=
9275                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9276                         ctxt.info.switch_id =
9277                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9278                 }
9279
9280                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9281                         ctxt.info.valid_sections |=
9282                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9283                         ctxt.info.queueing_opt_flags |=
9284                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9285                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9286                 }
9287
9288                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9289                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9290                 if (pf->vf[vsi->vf_id].spoofchk) {
9291                         ctxt.info.valid_sections |=
9292                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9293                         ctxt.info.sec_flags |=
9294                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9295                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9296                 }
9297                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9298                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9299                 break;
9300
9301 #ifdef I40E_FCOE
9302         case I40E_VSI_FCOE:
9303                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9304                 if (ret) {
9305                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9306                         return ret;
9307                 }
9308                 break;
9309
9310 #endif /* I40E_FCOE */
9311         case I40E_VSI_IWARP:
9312                 /* send down message to iWARP */
9313                 break;
9314
9315         default:
9316                 return -ENODEV;
9317         }
9318
9319         if (vsi->type != I40E_VSI_MAIN) {
9320                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9321                 if (ret) {
9322                         dev_info(&vsi->back->pdev->dev,
9323                                  "add vsi failed, err %s aq_err %s\n",
9324                                  i40e_stat_str(&pf->hw, ret),
9325                                  i40e_aq_str(&pf->hw,
9326                                              pf->hw.aq.asq_last_status));
9327                         ret = -ENOENT;
9328                         goto err;
9329                 }
9330                 vsi->info = ctxt.info;
9331                 vsi->info.valid_sections = 0;
9332                 vsi->seid = ctxt.seid;
9333                 vsi->id = ctxt.vsi_number;
9334         }
9335
9336         spin_lock_bh(&vsi->mac_filter_list_lock);
9337         /* If macvlan filters already exist, force them to get loaded */
9338         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9339                 f->changed = true;
9340                 f_count++;
9341
9342                 /* Expected to have only one MAC filter entry for LAA in list */
9343                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9344                         ether_addr_copy(laa_macaddr, f->macaddr);
9345                         found_laa_mac_filter = true;
9346                 }
9347         }
9348         spin_unlock_bh(&vsi->mac_filter_list_lock);
9349
9350         if (found_laa_mac_filter) {
9351                 struct i40e_aqc_remove_macvlan_element_data element;
9352
9353                 memset(&element, 0, sizeof(element));
9354                 ether_addr_copy(element.mac_addr, laa_macaddr);
9355                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9356                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9357                                              &element, 1, NULL);
9358                 if (ret) {
9359                         /* some older FW has a different default */
9360                         element.flags |=
9361                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9362                         i40e_aq_remove_macvlan(hw, vsi->seid,
9363                                                &element, 1, NULL);
9364                 }
9365
9366                 i40e_aq_mac_address_write(hw,
9367                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9368                                           laa_macaddr, NULL);
9369         }
9370
9371         if (f_count) {
9372                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9373                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9374         }
9375
9376         /* Update VSI BW information */
9377         ret = i40e_vsi_get_bw_info(vsi);
9378         if (ret) {
9379                 dev_info(&pf->pdev->dev,
9380                          "couldn't get vsi bw info, err %s aq_err %s\n",
9381                          i40e_stat_str(&pf->hw, ret),
9382                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9383                 /* VSI is already added so not tearing that up */
9384                 ret = 0;
9385         }
9386
9387 err:
9388         return ret;
9389 }
9390
9391 /**
9392  * i40e_vsi_release - Delete a VSI and free its resources
9393  * @vsi: the VSI being removed
9394  *
9395  * Returns 0 on success or < 0 on error
9396  **/
9397 int i40e_vsi_release(struct i40e_vsi *vsi)
9398 {
9399         struct i40e_mac_filter *f, *ftmp;
9400         struct i40e_veb *veb = NULL;
9401         struct i40e_pf *pf;
9402         u16 uplink_seid;
9403         int i, n;
9404
9405         pf = vsi->back;
9406
9407         /* release of a VEB-owner or last VSI is not allowed */
9408         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9409                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9410                          vsi->seid, vsi->uplink_seid);
9411                 return -ENODEV;
9412         }
9413         if (vsi == pf->vsi[pf->lan_vsi] &&
9414             !test_bit(__I40E_DOWN, &pf->state)) {
9415                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9416                 return -ENODEV;
9417         }
9418
9419         uplink_seid = vsi->uplink_seid;
9420         if (vsi->type != I40E_VSI_SRIOV) {
9421                 if (vsi->netdev_registered) {
9422                         vsi->netdev_registered = false;
9423                         if (vsi->netdev) {
9424                                 /* results in a call to i40e_close() */
9425                                 unregister_netdev(vsi->netdev);
9426                         }
9427                 } else {
9428                         i40e_vsi_close(vsi);
9429                 }
9430                 i40e_vsi_disable_irq(vsi);
9431         }
9432
9433         spin_lock_bh(&vsi->mac_filter_list_lock);
9434         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9435                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9436                                 f->is_vf, f->is_netdev);
9437         spin_unlock_bh(&vsi->mac_filter_list_lock);
9438
9439         i40e_sync_vsi_filters(vsi);
9440
9441         i40e_vsi_delete(vsi);
9442         i40e_vsi_free_q_vectors(vsi);
9443         if (vsi->netdev) {
9444                 free_netdev(vsi->netdev);
9445                 vsi->netdev = NULL;
9446         }
9447         i40e_vsi_clear_rings(vsi);
9448         i40e_vsi_clear(vsi);
9449
9450         /* If this was the last thing on the VEB, except for the
9451          * controlling VSI, remove the VEB, which puts the controlling
9452          * VSI onto the next level down in the switch.
9453          *
9454          * Well, okay, there's one more exception here: don't remove
9455          * the orphan VEBs yet.  We'll wait for an explicit remove request
9456          * from up the network stack.
9457          */
9458         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9459                 if (pf->vsi[i] &&
9460                     pf->vsi[i]->uplink_seid == uplink_seid &&
9461                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9462                         n++;      /* count the VSIs */
9463                 }
9464         }
9465         for (i = 0; i < I40E_MAX_VEB; i++) {
9466                 if (!pf->veb[i])
9467                         continue;
9468                 if (pf->veb[i]->uplink_seid == uplink_seid)
9469                         n++;     /* count the VEBs */
9470                 if (pf->veb[i]->seid == uplink_seid)
9471                         veb = pf->veb[i];
9472         }
9473         if (n == 0 && veb && veb->uplink_seid != 0)
9474                 i40e_veb_release(veb);
9475
9476         return 0;
9477 }
9478
9479 /**
9480  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9481  * @vsi: ptr to the VSI
9482  *
9483  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9484  * corresponding SW VSI structure and initializes num_queue_pairs for the
9485  * newly allocated VSI.
9486  *
9487  * Returns 0 on success or negative on failure
9488  **/
9489 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9490 {
9491         int ret = -ENOENT;
9492         struct i40e_pf *pf = vsi->back;
9493
9494         if (vsi->q_vectors[0]) {
9495                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9496                          vsi->seid);
9497                 return -EEXIST;
9498         }
9499
9500         if (vsi->base_vector) {
9501                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9502                          vsi->seid, vsi->base_vector);
9503                 return -EEXIST;
9504         }
9505
9506         ret = i40e_vsi_alloc_q_vectors(vsi);
9507         if (ret) {
9508                 dev_info(&pf->pdev->dev,
9509                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9510                          vsi->num_q_vectors, vsi->seid, ret);
9511                 vsi->num_q_vectors = 0;
9512                 goto vector_setup_out;
9513         }
9514
9515         /* In Legacy mode, we do not have to get any other vector since we
9516          * piggyback on the misc/ICR0 for queue interrupts.
9517         */
9518         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9519                 return ret;
9520         if (vsi->num_q_vectors)
9521                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9522                                                  vsi->num_q_vectors, vsi->idx);
9523         if (vsi->base_vector < 0) {
9524                 dev_info(&pf->pdev->dev,
9525                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9526                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9527                 i40e_vsi_free_q_vectors(vsi);
9528                 ret = -ENOENT;
9529                 goto vector_setup_out;
9530         }
9531
9532 vector_setup_out:
9533         return ret;
9534 }
9535
9536 /**
9537  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9538  * @vsi: pointer to the vsi.
9539  *
9540  * This re-allocates a vsi's queue resources.
9541  *
9542  * Returns pointer to the successfully allocated and configured VSI sw struct
9543  * on success, otherwise returns NULL on failure.
9544  **/
9545 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9546 {
9547         struct i40e_pf *pf;
9548         u8 enabled_tc;
9549         int ret;
9550
9551         if (!vsi)
9552                 return NULL;
9553
9554         pf = vsi->back;
9555
9556         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9557         i40e_vsi_clear_rings(vsi);
9558
9559         i40e_vsi_free_arrays(vsi, false);
9560         i40e_set_num_rings_in_vsi(vsi);
9561         ret = i40e_vsi_alloc_arrays(vsi, false);
9562         if (ret)
9563                 goto err_vsi;
9564
9565         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9566         if (ret < 0) {
9567                 dev_info(&pf->pdev->dev,
9568                          "failed to get tracking for %d queues for VSI %d err %d\n",
9569                          vsi->alloc_queue_pairs, vsi->seid, ret);
9570                 goto err_vsi;
9571         }
9572         vsi->base_queue = ret;
9573
9574         /* Update the FW view of the VSI. Force a reset of TC and queue
9575          * layout configurations.
9576          */
9577         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9578         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9579         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9580         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9581
9582         /* assign it some queues */
9583         ret = i40e_alloc_rings(vsi);
9584         if (ret)
9585                 goto err_rings;
9586
9587         /* map all of the rings to the q_vectors */
9588         i40e_vsi_map_rings_to_vectors(vsi);
9589         return vsi;
9590
9591 err_rings:
9592         i40e_vsi_free_q_vectors(vsi);
9593         if (vsi->netdev_registered) {
9594                 vsi->netdev_registered = false;
9595                 unregister_netdev(vsi->netdev);
9596                 free_netdev(vsi->netdev);
9597                 vsi->netdev = NULL;
9598         }
9599         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9600 err_vsi:
9601         i40e_vsi_clear(vsi);
9602         return NULL;
9603 }
9604
9605 /**
9606  * i40e_macaddr_init - explicitly write the mac address filters.
9607  *
9608  * @vsi: pointer to the vsi.
9609  * @macaddr: the MAC address
9610  *
9611  * This is needed when the macaddr has been obtained by other
9612  * means than the default, e.g., from Open Firmware or IDPROM.
9613  * Returns 0 on success, negative on failure
9614  **/
9615 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9616 {
9617         int ret;
9618         struct i40e_aqc_add_macvlan_element_data element;
9619
9620         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9621                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9622                                         macaddr, NULL);
9623         if (ret) {
9624                 dev_info(&vsi->back->pdev->dev,
9625                          "Addr change for VSI failed: %d\n", ret);
9626                 return -EADDRNOTAVAIL;
9627         }
9628
9629         memset(&element, 0, sizeof(element));
9630         ether_addr_copy(element.mac_addr, macaddr);
9631         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9632         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9633         if (ret) {
9634                 dev_info(&vsi->back->pdev->dev,
9635                          "add filter failed err %s aq_err %s\n",
9636                          i40e_stat_str(&vsi->back->hw, ret),
9637                          i40e_aq_str(&vsi->back->hw,
9638                                      vsi->back->hw.aq.asq_last_status));
9639         }
9640         return ret;
9641 }
9642
9643 /**
9644  * i40e_vsi_setup - Set up a VSI by a given type
9645  * @pf: board private structure
9646  * @type: VSI type
9647  * @uplink_seid: the switch element to link to
9648  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9649  *
9650  * This allocates the sw VSI structure and its queue resources, then add a VSI
9651  * to the identified VEB.
9652  *
9653  * Returns pointer to the successfully allocated and configure VSI sw struct on
9654  * success, otherwise returns NULL on failure.
9655  **/
9656 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9657                                 u16 uplink_seid, u32 param1)
9658 {
9659         struct i40e_vsi *vsi = NULL;
9660         struct i40e_veb *veb = NULL;
9661         int ret, i;
9662         int v_idx;
9663
9664         /* The requested uplink_seid must be either
9665          *     - the PF's port seid
9666          *              no VEB is needed because this is the PF
9667          *              or this is a Flow Director special case VSI
9668          *     - seid of an existing VEB
9669          *     - seid of a VSI that owns an existing VEB
9670          *     - seid of a VSI that doesn't own a VEB
9671          *              a new VEB is created and the VSI becomes the owner
9672          *     - seid of the PF VSI, which is what creates the first VEB
9673          *              this is a special case of the previous
9674          *
9675          * Find which uplink_seid we were given and create a new VEB if needed
9676          */
9677         for (i = 0; i < I40E_MAX_VEB; i++) {
9678                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9679                         veb = pf->veb[i];
9680                         break;
9681                 }
9682         }
9683
9684         if (!veb && uplink_seid != pf->mac_seid) {
9685
9686                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9687                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9688                                 vsi = pf->vsi[i];
9689                                 break;
9690                         }
9691                 }
9692                 if (!vsi) {
9693                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9694                                  uplink_seid);
9695                         return NULL;
9696                 }
9697
9698                 if (vsi->uplink_seid == pf->mac_seid)
9699                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9700                                              vsi->tc_config.enabled_tc);
9701                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9702                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9703                                              vsi->tc_config.enabled_tc);
9704                 if (veb) {
9705                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9706                                 dev_info(&vsi->back->pdev->dev,
9707                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9708                                 return NULL;
9709                         }
9710                         /* We come up by default in VEPA mode if SRIOV is not
9711                          * already enabled, in which case we can't force VEPA
9712                          * mode.
9713                          */
9714                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9715                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9716                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9717                         }
9718                         i40e_config_bridge_mode(veb);
9719                 }
9720                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9721                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9722                                 veb = pf->veb[i];
9723                 }
9724                 if (!veb) {
9725                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9726                         return NULL;
9727                 }
9728
9729                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9730                 uplink_seid = veb->seid;
9731         }
9732
9733         /* get vsi sw struct */
9734         v_idx = i40e_vsi_mem_alloc(pf, type);
9735         if (v_idx < 0)
9736                 goto err_alloc;
9737         vsi = pf->vsi[v_idx];
9738         if (!vsi)
9739                 goto err_alloc;
9740         vsi->type = type;
9741         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9742
9743         if (type == I40E_VSI_MAIN)
9744                 pf->lan_vsi = v_idx;
9745         else if (type == I40E_VSI_SRIOV)
9746                 vsi->vf_id = param1;
9747         /* assign it some queues */
9748         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9749                                 vsi->idx);
9750         if (ret < 0) {
9751                 dev_info(&pf->pdev->dev,
9752                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9753                          vsi->alloc_queue_pairs, vsi->seid, ret);
9754                 goto err_vsi;
9755         }
9756         vsi->base_queue = ret;
9757
9758         /* get a VSI from the hardware */
9759         vsi->uplink_seid = uplink_seid;
9760         ret = i40e_add_vsi(vsi);
9761         if (ret)
9762                 goto err_vsi;
9763
9764         switch (vsi->type) {
9765         /* setup the netdev if needed */
9766         case I40E_VSI_MAIN:
9767                 /* Apply relevant filters if a platform-specific mac
9768                  * address was selected.
9769                  */
9770                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9771                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9772                         if (ret) {
9773                                 dev_warn(&pf->pdev->dev,
9774                                          "could not set up macaddr; err %d\n",
9775                                          ret);
9776                         }
9777                 }
9778         case I40E_VSI_VMDQ2:
9779         case I40E_VSI_FCOE:
9780                 ret = i40e_config_netdev(vsi);
9781                 if (ret)
9782                         goto err_netdev;
9783                 ret = register_netdev(vsi->netdev);
9784                 if (ret)
9785                         goto err_netdev;
9786                 vsi->netdev_registered = true;
9787                 netif_carrier_off(vsi->netdev);
9788 #ifdef CONFIG_I40E_DCB
9789                 /* Setup DCB netlink interface */
9790                 i40e_dcbnl_setup(vsi);
9791 #endif /* CONFIG_I40E_DCB */
9792                 /* fall through */
9793
9794         case I40E_VSI_FDIR:
9795                 /* set up vectors and rings if needed */
9796                 ret = i40e_vsi_setup_vectors(vsi);
9797                 if (ret)
9798                         goto err_msix;
9799
9800                 ret = i40e_alloc_rings(vsi);
9801                 if (ret)
9802                         goto err_rings;
9803
9804                 /* map all of the rings to the q_vectors */
9805                 i40e_vsi_map_rings_to_vectors(vsi);
9806
9807                 i40e_vsi_reset_stats(vsi);
9808                 break;
9809
9810         default:
9811                 /* no netdev or rings for the other VSI types */
9812                 break;
9813         }
9814
9815         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9816             (vsi->type == I40E_VSI_VMDQ2)) {
9817                 ret = i40e_vsi_config_rss(vsi);
9818         }
9819         return vsi;
9820
9821 err_rings:
9822         i40e_vsi_free_q_vectors(vsi);
9823 err_msix:
9824         if (vsi->netdev_registered) {
9825                 vsi->netdev_registered = false;
9826                 unregister_netdev(vsi->netdev);
9827                 free_netdev(vsi->netdev);
9828                 vsi->netdev = NULL;
9829         }
9830 err_netdev:
9831         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9832 err_vsi:
9833         i40e_vsi_clear(vsi);
9834 err_alloc:
9835         return NULL;
9836 }
9837
9838 /**
9839  * i40e_veb_get_bw_info - Query VEB BW information
9840  * @veb: the veb to query
9841  *
9842  * Query the Tx scheduler BW configuration data for given VEB
9843  **/
9844 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9845 {
9846         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9847         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9848         struct i40e_pf *pf = veb->pf;
9849         struct i40e_hw *hw = &pf->hw;
9850         u32 tc_bw_max;
9851         int ret = 0;
9852         int i;
9853
9854         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9855                                                   &bw_data, NULL);
9856         if (ret) {
9857                 dev_info(&pf->pdev->dev,
9858                          "query veb bw config failed, err %s aq_err %s\n",
9859                          i40e_stat_str(&pf->hw, ret),
9860                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9861                 goto out;
9862         }
9863
9864         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9865                                                    &ets_data, NULL);
9866         if (ret) {
9867                 dev_info(&pf->pdev->dev,
9868                          "query veb bw ets config failed, err %s aq_err %s\n",
9869                          i40e_stat_str(&pf->hw, ret),
9870                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9871                 goto out;
9872         }
9873
9874         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9875         veb->bw_max_quanta = ets_data.tc_bw_max;
9876         veb->is_abs_credits = bw_data.absolute_credits_enable;
9877         veb->enabled_tc = ets_data.tc_valid_bits;
9878         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9879                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9880         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9881                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9882                 veb->bw_tc_limit_credits[i] =
9883                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9884                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9885         }
9886
9887 out:
9888         return ret;
9889 }
9890
9891 /**
9892  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9893  * @pf: board private structure
9894  *
9895  * On error: returns error code (negative)
9896  * On success: returns vsi index in PF (positive)
9897  **/
9898 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9899 {
9900         int ret = -ENOENT;
9901         struct i40e_veb *veb;
9902         int i;
9903
9904         /* Need to protect the allocation of switch elements at the PF level */
9905         mutex_lock(&pf->switch_mutex);
9906
9907         /* VEB list may be fragmented if VEB creation/destruction has
9908          * been happening.  We can afford to do a quick scan to look
9909          * for any free slots in the list.
9910          *
9911          * find next empty veb slot, looping back around if necessary
9912          */
9913         i = 0;
9914         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9915                 i++;
9916         if (i >= I40E_MAX_VEB) {
9917                 ret = -ENOMEM;
9918                 goto err_alloc_veb;  /* out of VEB slots! */
9919         }
9920
9921         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9922         if (!veb) {
9923                 ret = -ENOMEM;
9924                 goto err_alloc_veb;
9925         }
9926         veb->pf = pf;
9927         veb->idx = i;
9928         veb->enabled_tc = 1;
9929
9930         pf->veb[i] = veb;
9931         ret = i;
9932 err_alloc_veb:
9933         mutex_unlock(&pf->switch_mutex);
9934         return ret;
9935 }
9936
9937 /**
9938  * i40e_switch_branch_release - Delete a branch of the switch tree
9939  * @branch: where to start deleting
9940  *
9941  * This uses recursion to find the tips of the branch to be
9942  * removed, deleting until we get back to and can delete this VEB.
9943  **/
9944 static void i40e_switch_branch_release(struct i40e_veb *branch)
9945 {
9946         struct i40e_pf *pf = branch->pf;
9947         u16 branch_seid = branch->seid;
9948         u16 veb_idx = branch->idx;
9949         int i;
9950
9951         /* release any VEBs on this VEB - RECURSION */
9952         for (i = 0; i < I40E_MAX_VEB; i++) {
9953                 if (!pf->veb[i])
9954                         continue;
9955                 if (pf->veb[i]->uplink_seid == branch->seid)
9956                         i40e_switch_branch_release(pf->veb[i]);
9957         }
9958
9959         /* Release the VSIs on this VEB, but not the owner VSI.
9960          *
9961          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9962          *       the VEB itself, so don't use (*branch) after this loop.
9963          */
9964         for (i = 0; i < pf->num_alloc_vsi; i++) {
9965                 if (!pf->vsi[i])
9966                         continue;
9967                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9968                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9969                         i40e_vsi_release(pf->vsi[i]);
9970                 }
9971         }
9972
9973         /* There's one corner case where the VEB might not have been
9974          * removed, so double check it here and remove it if needed.
9975          * This case happens if the veb was created from the debugfs
9976          * commands and no VSIs were added to it.
9977          */
9978         if (pf->veb[veb_idx])
9979                 i40e_veb_release(pf->veb[veb_idx]);
9980 }
9981
9982 /**
9983  * i40e_veb_clear - remove veb struct
9984  * @veb: the veb to remove
9985  **/
9986 static void i40e_veb_clear(struct i40e_veb *veb)
9987 {
9988         if (!veb)
9989                 return;
9990
9991         if (veb->pf) {
9992                 struct i40e_pf *pf = veb->pf;
9993
9994                 mutex_lock(&pf->switch_mutex);
9995                 if (pf->veb[veb->idx] == veb)
9996                         pf->veb[veb->idx] = NULL;
9997                 mutex_unlock(&pf->switch_mutex);
9998         }
9999
10000         kfree(veb);
10001 }
10002
10003 /**
10004  * i40e_veb_release - Delete a VEB and free its resources
10005  * @veb: the VEB being removed
10006  **/
10007 void i40e_veb_release(struct i40e_veb *veb)
10008 {
10009         struct i40e_vsi *vsi = NULL;
10010         struct i40e_pf *pf;
10011         int i, n = 0;
10012
10013         pf = veb->pf;
10014
10015         /* find the remaining VSI and check for extras */
10016         for (i = 0; i < pf->num_alloc_vsi; i++) {
10017                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10018                         n++;
10019                         vsi = pf->vsi[i];
10020                 }
10021         }
10022         if (n != 1) {
10023                 dev_info(&pf->pdev->dev,
10024                          "can't remove VEB %d with %d VSIs left\n",
10025                          veb->seid, n);
10026                 return;
10027         }
10028
10029         /* move the remaining VSI to uplink veb */
10030         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10031         if (veb->uplink_seid) {
10032                 vsi->uplink_seid = veb->uplink_seid;
10033                 if (veb->uplink_seid == pf->mac_seid)
10034                         vsi->veb_idx = I40E_NO_VEB;
10035                 else
10036                         vsi->veb_idx = veb->veb_idx;
10037         } else {
10038                 /* floating VEB */
10039                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10040                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10041         }
10042
10043         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10044         i40e_veb_clear(veb);
10045 }
10046
10047 /**
10048  * i40e_add_veb - create the VEB in the switch
10049  * @veb: the VEB to be instantiated
10050  * @vsi: the controlling VSI
10051  **/
10052 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10053 {
10054         struct i40e_pf *pf = veb->pf;
10055         bool is_default = veb->pf->cur_promisc;
10056         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10057         int ret;
10058
10059         /* get a VEB from the hardware */
10060         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10061                               veb->enabled_tc, is_default,
10062                               &veb->seid, enable_stats, NULL);
10063         if (ret) {
10064                 dev_info(&pf->pdev->dev,
10065                          "couldn't add VEB, err %s aq_err %s\n",
10066                          i40e_stat_str(&pf->hw, ret),
10067                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10068                 return -EPERM;
10069         }
10070
10071         /* get statistics counter */
10072         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10073                                          &veb->stats_idx, NULL, NULL, NULL);
10074         if (ret) {
10075                 dev_info(&pf->pdev->dev,
10076                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10077                          i40e_stat_str(&pf->hw, ret),
10078                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10079                 return -EPERM;
10080         }
10081         ret = i40e_veb_get_bw_info(veb);
10082         if (ret) {
10083                 dev_info(&pf->pdev->dev,
10084                          "couldn't get VEB bw info, err %s aq_err %s\n",
10085                          i40e_stat_str(&pf->hw, ret),
10086                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10087                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10088                 return -ENOENT;
10089         }
10090
10091         vsi->uplink_seid = veb->seid;
10092         vsi->veb_idx = veb->idx;
10093         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10094
10095         return 0;
10096 }
10097
10098 /**
10099  * i40e_veb_setup - Set up a VEB
10100  * @pf: board private structure
10101  * @flags: VEB setup flags
10102  * @uplink_seid: the switch element to link to
10103  * @vsi_seid: the initial VSI seid
10104  * @enabled_tc: Enabled TC bit-map
10105  *
10106  * This allocates the sw VEB structure and links it into the switch
10107  * It is possible and legal for this to be a duplicate of an already
10108  * existing VEB.  It is also possible for both uplink and vsi seids
10109  * to be zero, in order to create a floating VEB.
10110  *
10111  * Returns pointer to the successfully allocated VEB sw struct on
10112  * success, otherwise returns NULL on failure.
10113  **/
10114 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10115                                 u16 uplink_seid, u16 vsi_seid,
10116                                 u8 enabled_tc)
10117 {
10118         struct i40e_veb *veb, *uplink_veb = NULL;
10119         int vsi_idx, veb_idx;
10120         int ret;
10121
10122         /* if one seid is 0, the other must be 0 to create a floating relay */
10123         if ((uplink_seid == 0 || vsi_seid == 0) &&
10124             (uplink_seid + vsi_seid != 0)) {
10125                 dev_info(&pf->pdev->dev,
10126                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10127                          uplink_seid, vsi_seid);
10128                 return NULL;
10129         }
10130
10131         /* make sure there is such a vsi and uplink */
10132         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10133                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10134                         break;
10135         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10136                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10137                          vsi_seid);
10138                 return NULL;
10139         }
10140
10141         if (uplink_seid && uplink_seid != pf->mac_seid) {
10142                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10143                         if (pf->veb[veb_idx] &&
10144                             pf->veb[veb_idx]->seid == uplink_seid) {
10145                                 uplink_veb = pf->veb[veb_idx];
10146                                 break;
10147                         }
10148                 }
10149                 if (!uplink_veb) {
10150                         dev_info(&pf->pdev->dev,
10151                                  "uplink seid %d not found\n", uplink_seid);
10152                         return NULL;
10153                 }
10154         }
10155
10156         /* get veb sw struct */
10157         veb_idx = i40e_veb_mem_alloc(pf);
10158         if (veb_idx < 0)
10159                 goto err_alloc;
10160         veb = pf->veb[veb_idx];
10161         veb->flags = flags;
10162         veb->uplink_seid = uplink_seid;
10163         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10164         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10165
10166         /* create the VEB in the switch */
10167         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10168         if (ret)
10169                 goto err_veb;
10170         if (vsi_idx == pf->lan_vsi)
10171                 pf->lan_veb = veb->idx;
10172
10173         return veb;
10174
10175 err_veb:
10176         i40e_veb_clear(veb);
10177 err_alloc:
10178         return NULL;
10179 }
10180
10181 /**
10182  * i40e_setup_pf_switch_element - set PF vars based on switch type
10183  * @pf: board private structure
10184  * @ele: element we are building info from
10185  * @num_reported: total number of elements
10186  * @printconfig: should we print the contents
10187  *
10188  * helper function to assist in extracting a few useful SEID values.
10189  **/
10190 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10191                                 struct i40e_aqc_switch_config_element_resp *ele,
10192                                 u16 num_reported, bool printconfig)
10193 {
10194         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10195         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10196         u8 element_type = ele->element_type;
10197         u16 seid = le16_to_cpu(ele->seid);
10198
10199         if (printconfig)
10200                 dev_info(&pf->pdev->dev,
10201                          "type=%d seid=%d uplink=%d downlink=%d\n",
10202                          element_type, seid, uplink_seid, downlink_seid);
10203
10204         switch (element_type) {
10205         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10206                 pf->mac_seid = seid;
10207                 break;
10208         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10209                 /* Main VEB? */
10210                 if (uplink_seid != pf->mac_seid)
10211                         break;
10212                 if (pf->lan_veb == I40E_NO_VEB) {
10213                         int v;
10214
10215                         /* find existing or else empty VEB */
10216                         for (v = 0; v < I40E_MAX_VEB; v++) {
10217                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10218                                         pf->lan_veb = v;
10219                                         break;
10220                                 }
10221                         }
10222                         if (pf->lan_veb == I40E_NO_VEB) {
10223                                 v = i40e_veb_mem_alloc(pf);
10224                                 if (v < 0)
10225                                         break;
10226                                 pf->lan_veb = v;
10227                         }
10228                 }
10229
10230                 pf->veb[pf->lan_veb]->seid = seid;
10231                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10232                 pf->veb[pf->lan_veb]->pf = pf;
10233                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10234                 break;
10235         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10236                 if (num_reported != 1)
10237                         break;
10238                 /* This is immediately after a reset so we can assume this is
10239                  * the PF's VSI
10240                  */
10241                 pf->mac_seid = uplink_seid;
10242                 pf->pf_seid = downlink_seid;
10243                 pf->main_vsi_seid = seid;
10244                 if (printconfig)
10245                         dev_info(&pf->pdev->dev,
10246                                  "pf_seid=%d main_vsi_seid=%d\n",
10247                                  pf->pf_seid, pf->main_vsi_seid);
10248                 break;
10249         case I40E_SWITCH_ELEMENT_TYPE_PF:
10250         case I40E_SWITCH_ELEMENT_TYPE_VF:
10251         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10252         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10253         case I40E_SWITCH_ELEMENT_TYPE_PE:
10254         case I40E_SWITCH_ELEMENT_TYPE_PA:
10255                 /* ignore these for now */
10256                 break;
10257         default:
10258                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10259                          element_type, seid);
10260                 break;
10261         }
10262 }
10263
10264 /**
10265  * i40e_fetch_switch_configuration - Get switch config from firmware
10266  * @pf: board private structure
10267  * @printconfig: should we print the contents
10268  *
10269  * Get the current switch configuration from the device and
10270  * extract a few useful SEID values.
10271  **/
10272 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10273 {
10274         struct i40e_aqc_get_switch_config_resp *sw_config;
10275         u16 next_seid = 0;
10276         int ret = 0;
10277         u8 *aq_buf;
10278         int i;
10279
10280         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10281         if (!aq_buf)
10282                 return -ENOMEM;
10283
10284         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10285         do {
10286                 u16 num_reported, num_total;
10287
10288                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10289                                                 I40E_AQ_LARGE_BUF,
10290                                                 &next_seid, NULL);
10291                 if (ret) {
10292                         dev_info(&pf->pdev->dev,
10293                                  "get switch config failed err %s aq_err %s\n",
10294                                  i40e_stat_str(&pf->hw, ret),
10295                                  i40e_aq_str(&pf->hw,
10296                                              pf->hw.aq.asq_last_status));
10297                         kfree(aq_buf);
10298                         return -ENOENT;
10299                 }
10300
10301                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10302                 num_total = le16_to_cpu(sw_config->header.num_total);
10303
10304                 if (printconfig)
10305                         dev_info(&pf->pdev->dev,
10306                                  "header: %d reported %d total\n",
10307                                  num_reported, num_total);
10308
10309                 for (i = 0; i < num_reported; i++) {
10310                         struct i40e_aqc_switch_config_element_resp *ele =
10311                                 &sw_config->element[i];
10312
10313                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10314                                                      printconfig);
10315                 }
10316         } while (next_seid != 0);
10317
10318         kfree(aq_buf);
10319         return ret;
10320 }
10321
10322 /**
10323  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10324  * @pf: board private structure
10325  * @reinit: if the Main VSI needs to re-initialized.
10326  *
10327  * Returns 0 on success, negative value on failure
10328  **/
10329 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10330 {
10331         u16 flags = 0;
10332         int ret;
10333
10334         /* find out what's out there already */
10335         ret = i40e_fetch_switch_configuration(pf, false);
10336         if (ret) {
10337                 dev_info(&pf->pdev->dev,
10338                          "couldn't fetch switch config, err %s aq_err %s\n",
10339                          i40e_stat_str(&pf->hw, ret),
10340                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10341                 return ret;
10342         }
10343         i40e_pf_reset_stats(pf);
10344
10345         /* set the switch config bit for the whole device to
10346          * support limited promisc or true promisc
10347          * when user requests promisc. The default is limited
10348          * promisc.
10349         */
10350
10351         if ((pf->hw.pf_id == 0) &&
10352             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10353                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10354
10355         if (pf->hw.pf_id == 0) {
10356                 u16 valid_flags;
10357
10358                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10359                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10360                                                 NULL);
10361                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10362                         dev_info(&pf->pdev->dev,
10363                                  "couldn't set switch config bits, err %s aq_err %s\n",
10364                                  i40e_stat_str(&pf->hw, ret),
10365                                  i40e_aq_str(&pf->hw,
10366                                              pf->hw.aq.asq_last_status));
10367                         /* not a fatal problem, just keep going */
10368                 }
10369         }
10370
10371         /* first time setup */
10372         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10373                 struct i40e_vsi *vsi = NULL;
10374                 u16 uplink_seid;
10375
10376                 /* Set up the PF VSI associated with the PF's main VSI
10377                  * that is already in the HW switch
10378                  */
10379                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10380                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10381                 else
10382                         uplink_seid = pf->mac_seid;
10383                 if (pf->lan_vsi == I40E_NO_VSI)
10384                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10385                 else if (reinit)
10386                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10387                 if (!vsi) {
10388                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10389                         i40e_fdir_teardown(pf);
10390                         return -EAGAIN;
10391                 }
10392         } else {
10393                 /* force a reset of TC and queue layout configurations */
10394                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10395
10396                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10397                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10398                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10399         }
10400         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10401
10402         i40e_fdir_sb_setup(pf);
10403
10404         /* Setup static PF queue filter control settings */
10405         ret = i40e_setup_pf_filter_control(pf);
10406         if (ret) {
10407                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10408                          ret);
10409                 /* Failure here should not stop continuing other steps */
10410         }
10411
10412         /* enable RSS in the HW, even for only one queue, as the stack can use
10413          * the hash
10414          */
10415         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10416                 i40e_pf_config_rss(pf);
10417
10418         /* fill in link information and enable LSE reporting */
10419         i40e_update_link_info(&pf->hw);
10420         i40e_link_event(pf);
10421
10422         /* Initialize user-specific link properties */
10423         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10424                                   I40E_AQ_AN_COMPLETED) ? true : false);
10425
10426         i40e_ptp_init(pf);
10427
10428         return ret;
10429 }
10430
10431 /**
10432  * i40e_determine_queue_usage - Work out queue distribution
10433  * @pf: board private structure
10434  **/
10435 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10436 {
10437         int queues_left;
10438
10439         pf->num_lan_qps = 0;
10440 #ifdef I40E_FCOE
10441         pf->num_fcoe_qps = 0;
10442 #endif
10443
10444         /* Find the max queues to be put into basic use.  We'll always be
10445          * using TC0, whether or not DCB is running, and TC0 will get the
10446          * big RSS set.
10447          */
10448         queues_left = pf->hw.func_caps.num_tx_qp;
10449
10450         if ((queues_left == 1) ||
10451             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10452                 /* one qp for PF, no queues for anything else */
10453                 queues_left = 0;
10454                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10455
10456                 /* make sure all the fancies are disabled */
10457                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10458                                I40E_FLAG_IWARP_ENABLED  |
10459 #ifdef I40E_FCOE
10460                                I40E_FLAG_FCOE_ENABLED   |
10461 #endif
10462                                I40E_FLAG_FD_SB_ENABLED  |
10463                                I40E_FLAG_FD_ATR_ENABLED |
10464                                I40E_FLAG_DCB_CAPABLE    |
10465                                I40E_FLAG_SRIOV_ENABLED  |
10466                                I40E_FLAG_VMDQ_ENABLED);
10467         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10468                                   I40E_FLAG_FD_SB_ENABLED |
10469                                   I40E_FLAG_FD_ATR_ENABLED |
10470                                   I40E_FLAG_DCB_CAPABLE))) {
10471                 /* one qp for PF */
10472                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10473                 queues_left -= pf->num_lan_qps;
10474
10475                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10476                                I40E_FLAG_IWARP_ENABLED  |
10477 #ifdef I40E_FCOE
10478                                I40E_FLAG_FCOE_ENABLED   |
10479 #endif
10480                                I40E_FLAG_FD_SB_ENABLED  |
10481                                I40E_FLAG_FD_ATR_ENABLED |
10482                                I40E_FLAG_DCB_ENABLED    |
10483                                I40E_FLAG_VMDQ_ENABLED);
10484         } else {
10485                 /* Not enough queues for all TCs */
10486                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10487                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10488                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10489                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10490                 }
10491                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10492                                         num_online_cpus());
10493                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10494                                         pf->hw.func_caps.num_tx_qp);
10495
10496                 queues_left -= pf->num_lan_qps;
10497         }
10498
10499 #ifdef I40E_FCOE
10500         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10501                 if (I40E_DEFAULT_FCOE <= queues_left) {
10502                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10503                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10504                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10505                 } else {
10506                         pf->num_fcoe_qps = 0;
10507                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10508                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10509                 }
10510
10511                 queues_left -= pf->num_fcoe_qps;
10512         }
10513
10514 #endif
10515         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10516                 if (queues_left > 1) {
10517                         queues_left -= 1; /* save 1 queue for FD */
10518                 } else {
10519                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10520                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10521                 }
10522         }
10523
10524         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10525             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10526                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10527                                         (queues_left / pf->num_vf_qps));
10528                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10529         }
10530
10531         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10532             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10533                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10534                                           (queues_left / pf->num_vmdq_qps));
10535                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10536         }
10537
10538         pf->queues_left = queues_left;
10539         dev_dbg(&pf->pdev->dev,
10540                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10541                 pf->hw.func_caps.num_tx_qp,
10542                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10543                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10544                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10545                 queues_left);
10546 #ifdef I40E_FCOE
10547         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10548 #endif
10549 }
10550
10551 /**
10552  * i40e_setup_pf_filter_control - Setup PF static filter control
10553  * @pf: PF to be setup
10554  *
10555  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10556  * settings. If PE/FCoE are enabled then it will also set the per PF
10557  * based filter sizes required for them. It also enables Flow director,
10558  * ethertype and macvlan type filter settings for the pf.
10559  *
10560  * Returns 0 on success, negative on failure
10561  **/
10562 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10563 {
10564         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10565
10566         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10567
10568         /* Flow Director is enabled */
10569         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10570                 settings->enable_fdir = true;
10571
10572         /* Ethtype and MACVLAN filters enabled for PF */
10573         settings->enable_ethtype = true;
10574         settings->enable_macvlan = true;
10575
10576         if (i40e_set_filter_control(&pf->hw, settings))
10577                 return -ENOENT;
10578
10579         return 0;
10580 }
10581
10582 #define INFO_STRING_LEN 255
10583 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10584 static void i40e_print_features(struct i40e_pf *pf)
10585 {
10586         struct i40e_hw *hw = &pf->hw;
10587         char *buf;
10588         int i;
10589
10590         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10591         if (!buf)
10592                 return;
10593
10594         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10595 #ifdef CONFIG_PCI_IOV
10596         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10597 #endif
10598         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10599                       pf->hw.func_caps.num_vsis,
10600                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10601         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10602                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10603         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10604                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10605         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10606                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10607                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10608         }
10609         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10610                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10611         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10612         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10613         if (pf->flags & I40E_FLAG_PTP)
10614                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10615 #ifdef I40E_FCOE
10616         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10617                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10618 #endif
10619         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10620                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10621         else
10622                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10623
10624         dev_info(&pf->pdev->dev, "%s\n", buf);
10625         kfree(buf);
10626         WARN_ON(i > INFO_STRING_LEN);
10627 }
10628
10629 /**
10630  * i40e_get_platform_mac_addr - get platform-specific MAC address
10631  *
10632  * @pdev: PCI device information struct
10633  * @pf: board private structure
10634  *
10635  * Look up the MAC address in Open Firmware  on systems that support it,
10636  * and use IDPROM on SPARC if no OF address is found. On return, the
10637  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10638  * has been selected.
10639  **/
10640 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10641 {
10642         pf->flags &= ~I40E_FLAG_PF_MAC;
10643         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10644                 pf->flags |= I40E_FLAG_PF_MAC;
10645 }
10646
10647 /**
10648  * i40e_probe - Device initialization routine
10649  * @pdev: PCI device information struct
10650  * @ent: entry in i40e_pci_tbl
10651  *
10652  * i40e_probe initializes a PF identified by a pci_dev structure.
10653  * The OS initialization, configuring of the PF private structure,
10654  * and a hardware reset occur.
10655  *
10656  * Returns 0 on success, negative on failure
10657  **/
10658 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10659 {
10660         struct i40e_aq_get_phy_abilities_resp abilities;
10661         struct i40e_pf *pf;
10662         struct i40e_hw *hw;
10663         static u16 pfs_found;
10664         u16 wol_nvm_bits;
10665         u16 link_status;
10666         int err;
10667         u32 val;
10668         u32 i;
10669         u8 set_fc_aq_fail;
10670
10671         err = pci_enable_device_mem(pdev);
10672         if (err)
10673                 return err;
10674
10675         /* set up for high or low dma */
10676         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10677         if (err) {
10678                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10679                 if (err) {
10680                         dev_err(&pdev->dev,
10681                                 "DMA configuration failed: 0x%x\n", err);
10682                         goto err_dma;
10683                 }
10684         }
10685
10686         /* set up pci connections */
10687         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10688                                            IORESOURCE_MEM), i40e_driver_name);
10689         if (err) {
10690                 dev_info(&pdev->dev,
10691                          "pci_request_selected_regions failed %d\n", err);
10692                 goto err_pci_reg;
10693         }
10694
10695         pci_enable_pcie_error_reporting(pdev);
10696         pci_set_master(pdev);
10697
10698         /* Now that we have a PCI connection, we need to do the
10699          * low level device setup.  This is primarily setting up
10700          * the Admin Queue structures and then querying for the
10701          * device's current profile information.
10702          */
10703         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10704         if (!pf) {
10705                 err = -ENOMEM;
10706                 goto err_pf_alloc;
10707         }
10708         pf->next_vsi = 0;
10709         pf->pdev = pdev;
10710         set_bit(__I40E_DOWN, &pf->state);
10711
10712         hw = &pf->hw;
10713         hw->back = pf;
10714
10715         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10716                                 I40E_MAX_CSR_SPACE);
10717
10718         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10719         if (!hw->hw_addr) {
10720                 err = -EIO;
10721                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10722                          (unsigned int)pci_resource_start(pdev, 0),
10723                          pf->ioremap_len, err);
10724                 goto err_ioremap;
10725         }
10726         hw->vendor_id = pdev->vendor;
10727         hw->device_id = pdev->device;
10728         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10729         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10730         hw->subsystem_device_id = pdev->subsystem_device;
10731         hw->bus.device = PCI_SLOT(pdev->devfn);
10732         hw->bus.func = PCI_FUNC(pdev->devfn);
10733         pf->instance = pfs_found;
10734
10735         /* set up the locks for the AQ, do this only once in probe
10736          * and destroy them only once in remove
10737          */
10738         mutex_init(&hw->aq.asq_mutex);
10739         mutex_init(&hw->aq.arq_mutex);
10740
10741         if (debug != -1) {
10742                 pf->msg_enable = pf->hw.debug_mask;
10743                 pf->msg_enable = debug;
10744         }
10745
10746         /* do a special CORER for clearing PXE mode once at init */
10747         if (hw->revision_id == 0 &&
10748             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10749                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10750                 i40e_flush(hw);
10751                 msleep(200);
10752                 pf->corer_count++;
10753
10754                 i40e_clear_pxe_mode(hw);
10755         }
10756
10757         /* Reset here to make sure all is clean and to define PF 'n' */
10758         i40e_clear_hw(hw);
10759         err = i40e_pf_reset(hw);
10760         if (err) {
10761                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10762                 goto err_pf_reset;
10763         }
10764         pf->pfr_count++;
10765
10766         hw->aq.num_arq_entries = I40E_AQ_LEN;
10767         hw->aq.num_asq_entries = I40E_AQ_LEN;
10768         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10769         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10770         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10771
10772         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10773                  "%s-%s:misc",
10774                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10775
10776         err = i40e_init_shared_code(hw);
10777         if (err) {
10778                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10779                          err);
10780                 goto err_pf_reset;
10781         }
10782
10783         /* set up a default setting for link flow control */
10784         pf->hw.fc.requested_mode = I40E_FC_NONE;
10785
10786         err = i40e_init_adminq(hw);
10787         if (err) {
10788                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10789                         dev_info(&pdev->dev,
10790                                  "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");
10791                 else
10792                         dev_info(&pdev->dev,
10793                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10794
10795                 goto err_pf_reset;
10796         }
10797
10798         /* provide nvm, fw, api versions */
10799         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10800                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10801                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10802                  i40e_nvm_version_str(hw));
10803
10804         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10805             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10806                 dev_info(&pdev->dev,
10807                          "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");
10808         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10809                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10810                 dev_info(&pdev->dev,
10811                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10812
10813         i40e_verify_eeprom(pf);
10814
10815         /* Rev 0 hardware was never productized */
10816         if (hw->revision_id < 1)
10817                 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");
10818
10819         i40e_clear_pxe_mode(hw);
10820         err = i40e_get_capabilities(pf);
10821         if (err)
10822                 goto err_adminq_setup;
10823
10824         err = i40e_sw_init(pf);
10825         if (err) {
10826                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10827                 goto err_sw_init;
10828         }
10829
10830         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10831                                 hw->func_caps.num_rx_qp,
10832                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10833         if (err) {
10834                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10835                 goto err_init_lan_hmc;
10836         }
10837
10838         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10839         if (err) {
10840                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10841                 err = -ENOENT;
10842                 goto err_configure_lan_hmc;
10843         }
10844
10845         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10846          * Ignore error return codes because if it was already disabled via
10847          * hardware settings this will fail
10848          */
10849         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10850                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10851                 i40e_aq_stop_lldp(hw, true, NULL);
10852         }
10853
10854         i40e_get_mac_addr(hw, hw->mac.addr);
10855         /* allow a platform config to override the HW addr */
10856         i40e_get_platform_mac_addr(pdev, pf);
10857         if (!is_valid_ether_addr(hw->mac.addr)) {
10858                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10859                 err = -EIO;
10860                 goto err_mac_addr;
10861         }
10862         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10863         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10864         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10865         if (is_valid_ether_addr(hw->mac.port_addr))
10866                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10867 #ifdef I40E_FCOE
10868         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10869         if (err)
10870                 dev_info(&pdev->dev,
10871                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10872         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10873                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10874                          hw->mac.san_addr);
10875                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10876         }
10877         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10878 #endif /* I40E_FCOE */
10879
10880         pci_set_drvdata(pdev, pf);
10881         pci_save_state(pdev);
10882 #ifdef CONFIG_I40E_DCB
10883         err = i40e_init_pf_dcb(pf);
10884         if (err) {
10885                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10886                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10887                 /* Continue without DCB enabled */
10888         }
10889 #endif /* CONFIG_I40E_DCB */
10890
10891         /* set up periodic task facility */
10892         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10893         pf->service_timer_period = HZ;
10894
10895         INIT_WORK(&pf->service_task, i40e_service_task);
10896         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10897         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10898
10899         /* NVM bit on means WoL disabled for the port */
10900         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10901         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10902                 pf->wol_en = false;
10903         else
10904                 pf->wol_en = true;
10905         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10906
10907         /* set up the main switch operations */
10908         i40e_determine_queue_usage(pf);
10909         err = i40e_init_interrupt_scheme(pf);
10910         if (err)
10911                 goto err_switch_setup;
10912
10913         /* The number of VSIs reported by the FW is the minimum guaranteed
10914          * to us; HW supports far more and we share the remaining pool with
10915          * the other PFs. We allocate space for more than the guarantee with
10916          * the understanding that we might not get them all later.
10917          */
10918         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10919                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10920         else
10921                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10922
10923         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10924         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10925                           GFP_KERNEL);
10926         if (!pf->vsi) {
10927                 err = -ENOMEM;
10928                 goto err_switch_setup;
10929         }
10930
10931 #ifdef CONFIG_PCI_IOV
10932         /* prep for VF support */
10933         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10934             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10935             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10936                 if (pci_num_vf(pdev))
10937                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10938         }
10939 #endif
10940         err = i40e_setup_pf_switch(pf, false);
10941         if (err) {
10942                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10943                 goto err_vsis;
10944         }
10945
10946         /* Make sure flow control is set according to current settings */
10947         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10948         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10949                 dev_dbg(&pf->pdev->dev,
10950                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10951                         i40e_stat_str(hw, err),
10952                         i40e_aq_str(hw, hw->aq.asq_last_status));
10953         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10954                 dev_dbg(&pf->pdev->dev,
10955                         "Set fc with err %s aq_err %s on set_phy_config\n",
10956                         i40e_stat_str(hw, err),
10957                         i40e_aq_str(hw, hw->aq.asq_last_status));
10958         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10959                 dev_dbg(&pf->pdev->dev,
10960                         "Set fc with err %s aq_err %s on get_link_info\n",
10961                         i40e_stat_str(hw, err),
10962                         i40e_aq_str(hw, hw->aq.asq_last_status));
10963
10964         /* if FDIR VSI was set up, start it now */
10965         for (i = 0; i < pf->num_alloc_vsi; i++) {
10966                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10967                         i40e_vsi_open(pf->vsi[i]);
10968                         break;
10969                 }
10970         }
10971
10972         /* The driver only wants link up/down and module qualification
10973          * reports from firmware.  Note the negative logic.
10974          */
10975         err = i40e_aq_set_phy_int_mask(&pf->hw,
10976                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10977                                          I40E_AQ_EVENT_MEDIA_NA |
10978                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10979         if (err)
10980                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10981                          i40e_stat_str(&pf->hw, err),
10982                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10983
10984         /* Reconfigure hardware for allowing smaller MSS in the case
10985          * of TSO, so that we avoid the MDD being fired and causing
10986          * a reset in the case of small MSS+TSO.
10987          */
10988         val = rd32(hw, I40E_REG_MSS);
10989         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10990                 val &= ~I40E_REG_MSS_MIN_MASK;
10991                 val |= I40E_64BYTE_MSS;
10992                 wr32(hw, I40E_REG_MSS, val);
10993         }
10994
10995         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
10996                 msleep(75);
10997                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10998                 if (err)
10999                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11000                                  i40e_stat_str(&pf->hw, err),
11001                                  i40e_aq_str(&pf->hw,
11002                                              pf->hw.aq.asq_last_status));
11003         }
11004         /* The main driver is (mostly) up and happy. We need to set this state
11005          * before setting up the misc vector or we get a race and the vector
11006          * ends up disabled forever.
11007          */
11008         clear_bit(__I40E_DOWN, &pf->state);
11009
11010         /* In case of MSIX we are going to setup the misc vector right here
11011          * to handle admin queue events etc. In case of legacy and MSI
11012          * the misc functionality and queue processing is combined in
11013          * the same vector and that gets setup at open.
11014          */
11015         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11016                 err = i40e_setup_misc_vector(pf);
11017                 if (err) {
11018                         dev_info(&pdev->dev,
11019                                  "setup of misc vector failed: %d\n", err);
11020                         goto err_vsis;
11021                 }
11022         }
11023
11024 #ifdef CONFIG_PCI_IOV
11025         /* prep for VF support */
11026         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11027             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11028             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11029                 /* disable link interrupts for VFs */
11030                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11031                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11032                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11033                 i40e_flush(hw);
11034
11035                 if (pci_num_vf(pdev)) {
11036                         dev_info(&pdev->dev,
11037                                  "Active VFs found, allocating resources.\n");
11038                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11039                         if (err)
11040                                 dev_info(&pdev->dev,
11041                                          "Error %d allocating resources for existing VFs\n",
11042                                          err);
11043                 }
11044         }
11045 #endif /* CONFIG_PCI_IOV */
11046
11047         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11048                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11049                                                       pf->num_iwarp_msix,
11050                                                       I40E_IWARP_IRQ_PILE_ID);
11051                 if (pf->iwarp_base_vector < 0) {
11052                         dev_info(&pdev->dev,
11053                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11054                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11055                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11056                 }
11057         }
11058
11059         i40e_dbg_pf_init(pf);
11060
11061         /* tell the firmware that we're starting */
11062         i40e_send_version(pf);
11063
11064         /* since everything's happy, start the service_task timer */
11065         mod_timer(&pf->service_timer,
11066                   round_jiffies(jiffies + pf->service_timer_period));
11067
11068         /* add this PF to client device list and launch a client service task */
11069         err = i40e_lan_add_device(pf);
11070         if (err)
11071                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11072                          err);
11073
11074 #ifdef I40E_FCOE
11075         /* create FCoE interface */
11076         i40e_fcoe_vsi_setup(pf);
11077
11078 #endif
11079 #define PCI_SPEED_SIZE 8
11080 #define PCI_WIDTH_SIZE 8
11081         /* Devices on the IOSF bus do not have this information
11082          * and will report PCI Gen 1 x 1 by default so don't bother
11083          * checking them.
11084          */
11085         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11086                 char speed[PCI_SPEED_SIZE] = "Unknown";
11087                 char width[PCI_WIDTH_SIZE] = "Unknown";
11088
11089                 /* Get the negotiated link width and speed from PCI config
11090                  * space
11091                  */
11092                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11093                                           &link_status);
11094
11095                 i40e_set_pci_config_data(hw, link_status);
11096
11097                 switch (hw->bus.speed) {
11098                 case i40e_bus_speed_8000:
11099                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11100                 case i40e_bus_speed_5000:
11101                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11102                 case i40e_bus_speed_2500:
11103                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11104                 default:
11105                         break;
11106                 }
11107                 switch (hw->bus.width) {
11108                 case i40e_bus_width_pcie_x8:
11109                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11110                 case i40e_bus_width_pcie_x4:
11111                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11112                 case i40e_bus_width_pcie_x2:
11113                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11114                 case i40e_bus_width_pcie_x1:
11115                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11116                 default:
11117                         break;
11118                 }
11119
11120                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11121                          speed, width);
11122
11123                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11124                     hw->bus.speed < i40e_bus_speed_8000) {
11125                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11126                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11127                 }
11128         }
11129
11130         /* get the requested speeds from the fw */
11131         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11132         if (err)
11133                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11134                         i40e_stat_str(&pf->hw, err),
11135                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11136         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11137
11138         /* get the supported phy types from the fw */
11139         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11140         if (err)
11141                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11142                         i40e_stat_str(&pf->hw, err),
11143                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11144         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11145
11146         /* Add a filter to drop all Flow control frames from any VSI from being
11147          * transmitted. By doing so we stop a malicious VF from sending out
11148          * PAUSE or PFC frames and potentially controlling traffic for other
11149          * PF/VF VSIs.
11150          * The FW can still send Flow control frames if enabled.
11151          */
11152         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11153                                                        pf->main_vsi_seid);
11154
11155         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11156             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11157                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11158
11159         /* print a string summarizing features */
11160         i40e_print_features(pf);
11161
11162         return 0;
11163
11164         /* Unwind what we've done if something failed in the setup */
11165 err_vsis:
11166         set_bit(__I40E_DOWN, &pf->state);
11167         i40e_clear_interrupt_scheme(pf);
11168         kfree(pf->vsi);
11169 err_switch_setup:
11170         i40e_reset_interrupt_capability(pf);
11171         del_timer_sync(&pf->service_timer);
11172 err_mac_addr:
11173 err_configure_lan_hmc:
11174         (void)i40e_shutdown_lan_hmc(hw);
11175 err_init_lan_hmc:
11176         kfree(pf->qp_pile);
11177 err_sw_init:
11178 err_adminq_setup:
11179 err_pf_reset:
11180         iounmap(hw->hw_addr);
11181 err_ioremap:
11182         kfree(pf);
11183 err_pf_alloc:
11184         pci_disable_pcie_error_reporting(pdev);
11185         pci_release_selected_regions(pdev,
11186                                      pci_select_bars(pdev, IORESOURCE_MEM));
11187 err_pci_reg:
11188 err_dma:
11189         pci_disable_device(pdev);
11190         return err;
11191 }
11192
11193 /**
11194  * i40e_remove - Device removal routine
11195  * @pdev: PCI device information struct
11196  *
11197  * i40e_remove is called by the PCI subsystem to alert the driver
11198  * that is should release a PCI device.  This could be caused by a
11199  * Hot-Plug event, or because the driver is going to be removed from
11200  * memory.
11201  **/
11202 static void i40e_remove(struct pci_dev *pdev)
11203 {
11204         struct i40e_pf *pf = pci_get_drvdata(pdev);
11205         struct i40e_hw *hw = &pf->hw;
11206         i40e_status ret_code;
11207         int i;
11208
11209         i40e_dbg_pf_exit(pf);
11210
11211         i40e_ptp_stop(pf);
11212
11213         /* Disable RSS in hw */
11214         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11215         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11216
11217         /* no more scheduling of any task */
11218         set_bit(__I40E_SUSPENDED, &pf->state);
11219         set_bit(__I40E_DOWN, &pf->state);
11220         if (pf->service_timer.data)
11221                 del_timer_sync(&pf->service_timer);
11222         if (pf->service_task.func)
11223                 cancel_work_sync(&pf->service_task);
11224
11225         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11226                 i40e_free_vfs(pf);
11227                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11228         }
11229
11230         i40e_fdir_teardown(pf);
11231
11232         /* If there is a switch structure or any orphans, remove them.
11233          * This will leave only the PF's VSI remaining.
11234          */
11235         for (i = 0; i < I40E_MAX_VEB; i++) {
11236                 if (!pf->veb[i])
11237                         continue;
11238
11239                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11240                     pf->veb[i]->uplink_seid == 0)
11241                         i40e_switch_branch_release(pf->veb[i]);
11242         }
11243
11244         /* Now we can shutdown the PF's VSI, just before we kill
11245          * adminq and hmc.
11246          */
11247         if (pf->vsi[pf->lan_vsi])
11248                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11249
11250         /* remove attached clients */
11251         ret_code = i40e_lan_del_device(pf);
11252         if (ret_code) {
11253                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11254                          ret_code);
11255         }
11256
11257         /* shutdown and destroy the HMC */
11258         if (hw->hmc.hmc_obj) {
11259                 ret_code = i40e_shutdown_lan_hmc(hw);
11260                 if (ret_code)
11261                         dev_warn(&pdev->dev,
11262                                  "Failed to destroy the HMC resources: %d\n",
11263                                  ret_code);
11264         }
11265
11266         /* shutdown the adminq */
11267         ret_code = i40e_shutdown_adminq(hw);
11268         if (ret_code)
11269                 dev_warn(&pdev->dev,
11270                          "Failed to destroy the Admin Queue resources: %d\n",
11271                          ret_code);
11272
11273         /* destroy the locks only once, here */
11274         mutex_destroy(&hw->aq.arq_mutex);
11275         mutex_destroy(&hw->aq.asq_mutex);
11276
11277         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11278         i40e_clear_interrupt_scheme(pf);
11279         for (i = 0; i < pf->num_alloc_vsi; i++) {
11280                 if (pf->vsi[i]) {
11281                         i40e_vsi_clear_rings(pf->vsi[i]);
11282                         i40e_vsi_clear(pf->vsi[i]);
11283                         pf->vsi[i] = NULL;
11284                 }
11285         }
11286
11287         for (i = 0; i < I40E_MAX_VEB; i++) {
11288                 kfree(pf->veb[i]);
11289                 pf->veb[i] = NULL;
11290         }
11291
11292         kfree(pf->qp_pile);
11293         kfree(pf->vsi);
11294
11295         iounmap(hw->hw_addr);
11296         kfree(pf);
11297         pci_release_selected_regions(pdev,
11298                                      pci_select_bars(pdev, IORESOURCE_MEM));
11299
11300         pci_disable_pcie_error_reporting(pdev);
11301         pci_disable_device(pdev);
11302 }
11303
11304 /**
11305  * i40e_pci_error_detected - warning that something funky happened in PCI land
11306  * @pdev: PCI device information struct
11307  *
11308  * Called to warn that something happened and the error handling steps
11309  * are in progress.  Allows the driver to quiesce things, be ready for
11310  * remediation.
11311  **/
11312 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11313                                                 enum pci_channel_state error)
11314 {
11315         struct i40e_pf *pf = pci_get_drvdata(pdev);
11316
11317         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11318
11319         /* shutdown all operations */
11320         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11321                 rtnl_lock();
11322                 i40e_prep_for_reset(pf);
11323                 rtnl_unlock();
11324         }
11325
11326         /* Request a slot reset */
11327         return PCI_ERS_RESULT_NEED_RESET;
11328 }
11329
11330 /**
11331  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11332  * @pdev: PCI device information struct
11333  *
11334  * Called to find if the driver can work with the device now that
11335  * the pci slot has been reset.  If a basic connection seems good
11336  * (registers are readable and have sane content) then return a
11337  * happy little PCI_ERS_RESULT_xxx.
11338  **/
11339 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11340 {
11341         struct i40e_pf *pf = pci_get_drvdata(pdev);
11342         pci_ers_result_t result;
11343         int err;
11344         u32 reg;
11345
11346         dev_dbg(&pdev->dev, "%s\n", __func__);
11347         if (pci_enable_device_mem(pdev)) {
11348                 dev_info(&pdev->dev,
11349                          "Cannot re-enable PCI device after reset.\n");
11350                 result = PCI_ERS_RESULT_DISCONNECT;
11351         } else {
11352                 pci_set_master(pdev);
11353                 pci_restore_state(pdev);
11354                 pci_save_state(pdev);
11355                 pci_wake_from_d3(pdev, false);
11356
11357                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11358                 if (reg == 0)
11359                         result = PCI_ERS_RESULT_RECOVERED;
11360                 else
11361                         result = PCI_ERS_RESULT_DISCONNECT;
11362         }
11363
11364         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11365         if (err) {
11366                 dev_info(&pdev->dev,
11367                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11368                          err);
11369                 /* non-fatal, continue */
11370         }
11371
11372         return result;
11373 }
11374
11375 /**
11376  * i40e_pci_error_resume - restart operations after PCI error recovery
11377  * @pdev: PCI device information struct
11378  *
11379  * Called to allow the driver to bring things back up after PCI error
11380  * and/or reset recovery has finished.
11381  **/
11382 static void i40e_pci_error_resume(struct pci_dev *pdev)
11383 {
11384         struct i40e_pf *pf = pci_get_drvdata(pdev);
11385
11386         dev_dbg(&pdev->dev, "%s\n", __func__);
11387         if (test_bit(__I40E_SUSPENDED, &pf->state))
11388                 return;
11389
11390         rtnl_lock();
11391         i40e_handle_reset_warning(pf);
11392         rtnl_unlock();
11393 }
11394
11395 /**
11396  * i40e_shutdown - PCI callback for shutting down
11397  * @pdev: PCI device information struct
11398  **/
11399 static void i40e_shutdown(struct pci_dev *pdev)
11400 {
11401         struct i40e_pf *pf = pci_get_drvdata(pdev);
11402         struct i40e_hw *hw = &pf->hw;
11403
11404         set_bit(__I40E_SUSPENDED, &pf->state);
11405         set_bit(__I40E_DOWN, &pf->state);
11406         rtnl_lock();
11407         i40e_prep_for_reset(pf);
11408         rtnl_unlock();
11409
11410         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11411         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11412
11413         del_timer_sync(&pf->service_timer);
11414         cancel_work_sync(&pf->service_task);
11415         i40e_fdir_teardown(pf);
11416
11417         rtnl_lock();
11418         i40e_prep_for_reset(pf);
11419         rtnl_unlock();
11420
11421         wr32(hw, I40E_PFPM_APM,
11422              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11423         wr32(hw, I40E_PFPM_WUFC,
11424              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11425
11426         i40e_clear_interrupt_scheme(pf);
11427
11428         if (system_state == SYSTEM_POWER_OFF) {
11429                 pci_wake_from_d3(pdev, pf->wol_en);
11430                 pci_set_power_state(pdev, PCI_D3hot);
11431         }
11432 }
11433
11434 #ifdef CONFIG_PM
11435 /**
11436  * i40e_suspend - PCI callback for moving to D3
11437  * @pdev: PCI device information struct
11438  **/
11439 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11440 {
11441         struct i40e_pf *pf = pci_get_drvdata(pdev);
11442         struct i40e_hw *hw = &pf->hw;
11443
11444         set_bit(__I40E_SUSPENDED, &pf->state);
11445         set_bit(__I40E_DOWN, &pf->state);
11446
11447         rtnl_lock();
11448         i40e_prep_for_reset(pf);
11449         rtnl_unlock();
11450
11451         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11452         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11453
11454         pci_wake_from_d3(pdev, pf->wol_en);
11455         pci_set_power_state(pdev, PCI_D3hot);
11456
11457         return 0;
11458 }
11459
11460 /**
11461  * i40e_resume - PCI callback for waking up from D3
11462  * @pdev: PCI device information struct
11463  **/
11464 static int i40e_resume(struct pci_dev *pdev)
11465 {
11466         struct i40e_pf *pf = pci_get_drvdata(pdev);
11467         u32 err;
11468
11469         pci_set_power_state(pdev, PCI_D0);
11470         pci_restore_state(pdev);
11471         /* pci_restore_state() clears dev->state_saves, so
11472          * call pci_save_state() again to restore it.
11473          */
11474         pci_save_state(pdev);
11475
11476         err = pci_enable_device_mem(pdev);
11477         if (err) {
11478                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11479                 return err;
11480         }
11481         pci_set_master(pdev);
11482
11483         /* no wakeup events while running */
11484         pci_wake_from_d3(pdev, false);
11485
11486         /* handling the reset will rebuild the device state */
11487         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11488                 clear_bit(__I40E_DOWN, &pf->state);
11489                 rtnl_lock();
11490                 i40e_reset_and_rebuild(pf, false);
11491                 rtnl_unlock();
11492         }
11493
11494         return 0;
11495 }
11496
11497 #endif
11498 static const struct pci_error_handlers i40e_err_handler = {
11499         .error_detected = i40e_pci_error_detected,
11500         .slot_reset = i40e_pci_error_slot_reset,
11501         .resume = i40e_pci_error_resume,
11502 };
11503
11504 static struct pci_driver i40e_driver = {
11505         .name     = i40e_driver_name,
11506         .id_table = i40e_pci_tbl,
11507         .probe    = i40e_probe,
11508         .remove   = i40e_remove,
11509 #ifdef CONFIG_PM
11510         .suspend  = i40e_suspend,
11511         .resume   = i40e_resume,
11512 #endif
11513         .shutdown = i40e_shutdown,
11514         .err_handler = &i40e_err_handler,
11515         .sriov_configure = i40e_pci_sriov_configure,
11516 };
11517
11518 /**
11519  * i40e_init_module - Driver registration routine
11520  *
11521  * i40e_init_module is the first routine called when the driver is
11522  * loaded. All it does is register with the PCI subsystem.
11523  **/
11524 static int __init i40e_init_module(void)
11525 {
11526         pr_info("%s: %s - version %s\n", i40e_driver_name,
11527                 i40e_driver_string, i40e_driver_version_str);
11528         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11529
11530         /* we will see if single thread per module is enough for now,
11531          * it can't be any worse than using the system workqueue which
11532          * was already single threaded
11533          */
11534         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11535         if (!i40e_wq) {
11536                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11537                 return -ENOMEM;
11538         }
11539
11540         i40e_dbg_init();
11541         return pci_register_driver(&i40e_driver);
11542 }
11543 module_init(i40e_init_module);
11544
11545 /**
11546  * i40e_exit_module - Driver exit cleanup routine
11547  *
11548  * i40e_exit_module is called just before the driver is removed
11549  * from memory.
11550  **/
11551 static void __exit i40e_exit_module(void)
11552 {
11553         pci_unregister_driver(&i40e_driver);
11554         destroy_workqueue(i40e_wq);
11555         i40e_dbg_exit();
11556 }
11557 module_exit(i40e_exit_module);