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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 4
  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         qcount = vsi->alloc_queue_pairs;
1583
1584         num_tc_qps = qcount / numtc;
1585         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1586
1587         /* Setup queue offset/count for all TCs for given VSI */
1588         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1589                 /* See if the given TC is enabled for the given VSI */
1590                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1591                         /* TC is enabled */
1592                         int pow, num_qps;
1593
1594                         switch (vsi->type) {
1595                         case I40E_VSI_MAIN:
1596                                 qcount = min_t(int, pf->alloc_rss_size,
1597                                                num_tc_qps);
1598                                 break;
1599 #ifdef I40E_FCOE
1600                         case I40E_VSI_FCOE:
1601                                 qcount = num_tc_qps;
1602                                 break;
1603 #endif
1604                         case I40E_VSI_FDIR:
1605                         case I40E_VSI_SRIOV:
1606                         case I40E_VSI_VMDQ2:
1607                         default:
1608                                 qcount = num_tc_qps;
1609                                 WARN_ON(i != 0);
1610                                 break;
1611                         }
1612                         vsi->tc_config.tc_info[i].qoffset = offset;
1613                         vsi->tc_config.tc_info[i].qcount = qcount;
1614
1615                         /* find the next higher power-of-2 of num queue pairs */
1616                         num_qps = qcount;
1617                         pow = 0;
1618                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1619                                 pow++;
1620                                 num_qps >>= 1;
1621                         }
1622
1623                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1624                         qmap =
1625                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1626                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1627
1628                         offset += qcount;
1629                 } else {
1630                         /* TC is not enabled so set the offset to
1631                          * default queue and allocate one queue
1632                          * for the given TC.
1633                          */
1634                         vsi->tc_config.tc_info[i].qoffset = 0;
1635                         vsi->tc_config.tc_info[i].qcount = 1;
1636                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1637
1638                         qmap = 0;
1639                 }
1640                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1641         }
1642
1643         /* Set actual Tx/Rx queue pairs */
1644         vsi->num_queue_pairs = offset;
1645         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1646                 if (vsi->req_queue_pairs > 0)
1647                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1648                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1649                         vsi->num_queue_pairs = pf->num_lan_msix;
1650         }
1651
1652         /* Scheduler section valid can only be set for ADD VSI */
1653         if (is_add) {
1654                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1655
1656                 ctxt->info.up_enable_bits = enabled_tc;
1657         }
1658         if (vsi->type == I40E_VSI_SRIOV) {
1659                 ctxt->info.mapping_flags |=
1660                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1661                 for (i = 0; i < vsi->num_queue_pairs; i++)
1662                         ctxt->info.queue_mapping[i] =
1663                                                cpu_to_le16(vsi->base_queue + i);
1664         } else {
1665                 ctxt->info.mapping_flags |=
1666                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1667                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1668         }
1669         ctxt->info.valid_sections |= cpu_to_le16(sections);
1670 }
1671
1672 /**
1673  * i40e_set_rx_mode - NDO callback to set the netdev filters
1674  * @netdev: network interface device structure
1675  **/
1676 #ifdef I40E_FCOE
1677 void i40e_set_rx_mode(struct net_device *netdev)
1678 #else
1679 static void i40e_set_rx_mode(struct net_device *netdev)
1680 #endif
1681 {
1682         struct i40e_netdev_priv *np = netdev_priv(netdev);
1683         struct i40e_mac_filter *f, *ftmp;
1684         struct i40e_vsi *vsi = np->vsi;
1685         struct netdev_hw_addr *uca;
1686         struct netdev_hw_addr *mca;
1687         struct netdev_hw_addr *ha;
1688
1689         spin_lock_bh(&vsi->mac_filter_list_lock);
1690
1691         /* add addr if not already in the filter list */
1692         netdev_for_each_uc_addr(uca, netdev) {
1693                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1694                         if (i40e_is_vsi_in_vlan(vsi))
1695                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1696                                                      false, true);
1697                         else
1698                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1699                                                 false, true);
1700                 }
1701         }
1702
1703         netdev_for_each_mc_addr(mca, netdev) {
1704                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1705                         if (i40e_is_vsi_in_vlan(vsi))
1706                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1707                                                      false, true);
1708                         else
1709                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1710                                                 false, true);
1711                 }
1712         }
1713
1714         /* remove filter if not in netdev list */
1715         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1716
1717                 if (!f->is_netdev)
1718                         continue;
1719
1720                 netdev_for_each_mc_addr(mca, netdev)
1721                         if (ether_addr_equal(mca->addr, f->macaddr))
1722                                 goto bottom_of_search_loop;
1723
1724                 netdev_for_each_uc_addr(uca, netdev)
1725                         if (ether_addr_equal(uca->addr, f->macaddr))
1726                                 goto bottom_of_search_loop;
1727
1728                 for_each_dev_addr(netdev, ha)
1729                         if (ether_addr_equal(ha->addr, f->macaddr))
1730                                 goto bottom_of_search_loop;
1731
1732                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1733                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1734
1735 bottom_of_search_loop:
1736                 continue;
1737         }
1738         spin_unlock_bh(&vsi->mac_filter_list_lock);
1739
1740         /* check for other flag changes */
1741         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1742                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1743                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1744         }
1745
1746         /* schedule our worker thread which will take care of
1747          * applying the new filter changes
1748          */
1749         i40e_service_event_schedule(vsi->back);
1750 }
1751
1752 /**
1753  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1754  * @src: source MAC filter entry to be clones
1755  *
1756  * Returns the pointer to newly cloned MAC filter entry or NULL
1757  * in case of error
1758  **/
1759 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1760                                         struct i40e_mac_filter *src)
1761 {
1762         struct i40e_mac_filter *f;
1763
1764         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1765         if (!f)
1766                 return NULL;
1767         *f = *src;
1768
1769         INIT_LIST_HEAD(&f->list);
1770
1771         return f;
1772 }
1773
1774 /**
1775  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1776  * @vsi: pointer to vsi struct
1777  * @from: Pointer to list which contains MAC filter entries - changes to
1778  *        those entries needs to be undone.
1779  *
1780  * MAC filter entries from list were slated to be removed from device.
1781  **/
1782 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1783                                          struct list_head *from)
1784 {
1785         struct i40e_mac_filter *f, *ftmp;
1786
1787         list_for_each_entry_safe(f, ftmp, from, list) {
1788                 f->changed = true;
1789                 /* Move the element back into MAC filter list*/
1790                 list_move_tail(&f->list, &vsi->mac_filter_list);
1791         }
1792 }
1793
1794 /**
1795  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1796  * @vsi: pointer to vsi struct
1797  *
1798  * MAC filter entries from list were slated to be added from device.
1799  **/
1800 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1801 {
1802         struct i40e_mac_filter *f, *ftmp;
1803
1804         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1805                 if (!f->changed && f->counter)
1806                         f->changed = true;
1807         }
1808 }
1809
1810 /**
1811  * i40e_cleanup_add_list - Deletes the element from add list and release
1812  *                      memory
1813  * @add_list: Pointer to list which contains MAC filter entries
1814  **/
1815 static void i40e_cleanup_add_list(struct list_head *add_list)
1816 {
1817         struct i40e_mac_filter *f, *ftmp;
1818
1819         list_for_each_entry_safe(f, ftmp, add_list, list) {
1820                 list_del(&f->list);
1821                 kfree(f);
1822         }
1823 }
1824
1825 /**
1826  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1827  * @vsi: ptr to the VSI
1828  *
1829  * Push any outstanding VSI filter changes through the AdminQ.
1830  *
1831  * Returns 0 or error value
1832  **/
1833 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1834 {
1835         struct list_head tmp_del_list, tmp_add_list;
1836         struct i40e_mac_filter *f, *ftmp, *fclone;
1837         struct i40e_hw *hw = &vsi->back->hw;
1838         bool promisc_forced_on = false;
1839         bool add_happened = false;
1840         char vsi_name[16] = "PF";
1841         int filter_list_len = 0;
1842         u32 changed_flags = 0;
1843         i40e_status aq_ret = 0;
1844         bool err_cond = false;
1845         int retval = 0;
1846         struct i40e_pf *pf;
1847         int num_add = 0;
1848         int num_del = 0;
1849         int aq_err = 0;
1850         u16 cmd_flags;
1851
1852         /* empty array typed pointers, kcalloc later */
1853         struct i40e_aqc_add_macvlan_element_data *add_list;
1854         struct i40e_aqc_remove_macvlan_element_data *del_list;
1855
1856         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1857                 usleep_range(1000, 2000);
1858         pf = vsi->back;
1859
1860         if (vsi->netdev) {
1861                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1862                 vsi->current_netdev_flags = vsi->netdev->flags;
1863         }
1864
1865         INIT_LIST_HEAD(&tmp_del_list);
1866         INIT_LIST_HEAD(&tmp_add_list);
1867
1868         if (vsi->type == I40E_VSI_SRIOV)
1869                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
1870         else if (vsi->type != I40E_VSI_MAIN)
1871                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
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 on %s, err %s, aq_err %s while flushing a full buffer\n",
1968                                                  vsi_name,
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 on %s, err %s aq_err %s\n",
1989                                          vsi_name,
1990                                          i40e_stat_str(hw, aq_ret),
1991                                          i40e_aq_str(hw, aq_err));
1992                 }
1993
1994                 kfree(del_list);
1995                 del_list = NULL;
1996         }
1997
1998         if (!list_empty(&tmp_add_list)) {
1999                 int add_list_size;
2000
2001                 /* do all the adds now */
2002                 filter_list_len = hw->aq.asq_buf_size /
2003                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2004                 add_list_size = filter_list_len *
2005                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2006                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2007                 if (!add_list) {
2008                         /* Purge element from temporary lists */
2009                         i40e_cleanup_add_list(&tmp_add_list);
2010
2011                         /* Undo add filter entries from VSI MAC filter list */
2012                         spin_lock_bh(&vsi->mac_filter_list_lock);
2013                         i40e_undo_add_filter_entries(vsi);
2014                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2015                         retval = -ENOMEM;
2016                         goto out;
2017                 }
2018
2019                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2020
2021                         add_happened = true;
2022                         cmd_flags = 0;
2023
2024                         /* add to add array */
2025                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2026                         add_list[num_add].vlan_tag =
2027                                 cpu_to_le16(
2028                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2029                         add_list[num_add].queue_number = 0;
2030
2031                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2032                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2033                         num_add++;
2034
2035                         /* flush a full buffer */
2036                         if (num_add == filter_list_len) {
2037                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2038                                                              add_list, num_add,
2039                                                              NULL);
2040                                 aq_err = hw->aq.asq_last_status;
2041                                 num_add = 0;
2042
2043                                 if (aq_ret)
2044                                         break;
2045                                 memset(add_list, 0, add_list_size);
2046                         }
2047                         /* Entries from tmp_add_list were cloned from MAC
2048                          * filter list, hence clean those cloned entries
2049                          */
2050                         list_del(&f->list);
2051                         kfree(f);
2052                 }
2053
2054                 if (num_add) {
2055                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2056                                                      add_list, num_add, NULL);
2057                         aq_err = hw->aq.asq_last_status;
2058                         num_add = 0;
2059                 }
2060                 kfree(add_list);
2061                 add_list = NULL;
2062
2063                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2064                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2065                         dev_info(&pf->pdev->dev,
2066                                  "add filter failed on %s, err %s aq_err %s\n",
2067                                  vsi_name,
2068                                  i40e_stat_str(hw, aq_ret),
2069                                  i40e_aq_str(hw, aq_err));
2070                         if ((hw->aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2071                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2072                                       &vsi->state)) {
2073                                 promisc_forced_on = true;
2074                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2075                                         &vsi->state);
2076                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on %s\n",
2077                                          vsi_name);
2078                         }
2079                 }
2080         }
2081
2082         /* if the VF is not trusted do not do promisc */
2083         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2084                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2085                 goto out;
2086         }
2087
2088         /* check for changes in promiscuous modes */
2089         if (changed_flags & IFF_ALLMULTI) {
2090                 bool cur_multipromisc;
2091
2092                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2093                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2094                                                                vsi->seid,
2095                                                                cur_multipromisc,
2096                                                                NULL);
2097                 if (aq_ret) {
2098                         retval = i40e_aq_rc_to_posix(aq_ret,
2099                                                      hw->aq.asq_last_status);
2100                         dev_info(&pf->pdev->dev,
2101                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2102                                  vsi_name,
2103                                  i40e_stat_str(hw, aq_ret),
2104                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2105                 }
2106         }
2107         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2108                 bool cur_promisc;
2109
2110                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2111                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2112                                         &vsi->state));
2113                 if ((vsi->type == I40E_VSI_MAIN) &&
2114                     (pf->lan_veb != I40E_NO_VEB) &&
2115                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2116                         /* set defport ON for Main VSI instead of true promisc
2117                          * this way we will get all unicast/multicast and VLAN
2118                          * promisc behavior but will not get VF or VMDq traffic
2119                          * replicated on the Main VSI.
2120                          */
2121                         if (pf->cur_promisc != cur_promisc) {
2122                                 pf->cur_promisc = cur_promisc;
2123                                 if (cur_promisc)
2124                                         aq_ret =
2125                                               i40e_aq_set_default_vsi(hw,
2126                                                                       vsi->seid,
2127                                                                       NULL);
2128                                 else
2129                                         aq_ret =
2130                                             i40e_aq_clear_default_vsi(hw,
2131                                                                       vsi->seid,
2132                                                                       NULL);
2133                                 if (aq_ret) {
2134                                         retval = i40e_aq_rc_to_posix(aq_ret,
2135                                                         hw->aq.asq_last_status);
2136                                         dev_info(&pf->pdev->dev,
2137                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2138                                                  vsi_name,
2139                                                  i40e_stat_str(hw, aq_ret),
2140                                                  i40e_aq_str(hw,
2141                                                      hw->aq.asq_last_status));
2142                                 }
2143                         }
2144                 } else {
2145                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2146                                                           hw,
2147                                                           vsi->seid,
2148                                                           cur_promisc, NULL,
2149                                                           true);
2150                         if (aq_ret) {
2151                                 retval =
2152                                 i40e_aq_rc_to_posix(aq_ret,
2153                                                     hw->aq.asq_last_status);
2154                                 dev_info(&pf->pdev->dev,
2155                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2156                                          vsi_name,
2157                                          i40e_stat_str(hw, aq_ret),
2158                                          i40e_aq_str(hw,
2159                                                      hw->aq.asq_last_status));
2160                         }
2161                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2162                                                           hw,
2163                                                           vsi->seid,
2164                                                           cur_promisc, NULL);
2165                         if (aq_ret) {
2166                                 retval =
2167                                 i40e_aq_rc_to_posix(aq_ret,
2168                                                     hw->aq.asq_last_status);
2169                                 dev_info(&pf->pdev->dev,
2170                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2171                                          vsi_name,
2172                                          i40e_stat_str(hw, aq_ret),
2173                                          i40e_aq_str(hw,
2174                                                      hw->aq.asq_last_status));
2175                         }
2176                 }
2177                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2178                                                    vsi->seid,
2179                                                    cur_promisc, NULL);
2180                 if (aq_ret) {
2181                         retval = i40e_aq_rc_to_posix(aq_ret,
2182                                                      pf->hw.aq.asq_last_status);
2183                         dev_info(&pf->pdev->dev,
2184                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2185                                          i40e_stat_str(hw, aq_ret),
2186                                          i40e_aq_str(hw,
2187                                                      hw->aq.asq_last_status));
2188                 }
2189         }
2190 out:
2191         /* if something went wrong then set the changed flag so we try again */
2192         if (retval)
2193                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2194
2195         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2196         return retval;
2197 }
2198
2199 /**
2200  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2201  * @pf: board private structure
2202  **/
2203 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2204 {
2205         int v;
2206
2207         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2208                 return;
2209         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2210
2211         for (v = 0; v < pf->num_alloc_vsi; v++) {
2212                 if (pf->vsi[v] &&
2213                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2214                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2215
2216                         if (ret) {
2217                                 /* come back and try again later */
2218                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2219                                 break;
2220                         }
2221                 }
2222         }
2223 }
2224
2225 /**
2226  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2227  * @netdev: network interface device structure
2228  * @new_mtu: new value for maximum frame size
2229  *
2230  * Returns 0 on success, negative on failure
2231  **/
2232 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2233 {
2234         struct i40e_netdev_priv *np = netdev_priv(netdev);
2235         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2236         struct i40e_vsi *vsi = np->vsi;
2237
2238         /* MTU < 68 is an error and causes problems on some kernels */
2239         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2240                 return -EINVAL;
2241
2242         netdev_info(netdev, "changing MTU from %d to %d\n",
2243                     netdev->mtu, new_mtu);
2244         netdev->mtu = new_mtu;
2245         if (netif_running(netdev))
2246                 i40e_vsi_reinit_locked(vsi);
2247         i40e_notify_client_of_l2_param_changes(vsi);
2248         return 0;
2249 }
2250
2251 /**
2252  * i40e_ioctl - Access the hwtstamp interface
2253  * @netdev: network interface device structure
2254  * @ifr: interface request data
2255  * @cmd: ioctl command
2256  **/
2257 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2258 {
2259         struct i40e_netdev_priv *np = netdev_priv(netdev);
2260         struct i40e_pf *pf = np->vsi->back;
2261
2262         switch (cmd) {
2263         case SIOCGHWTSTAMP:
2264                 return i40e_ptp_get_ts_config(pf, ifr);
2265         case SIOCSHWTSTAMP:
2266                 return i40e_ptp_set_ts_config(pf, ifr);
2267         default:
2268                 return -EOPNOTSUPP;
2269         }
2270 }
2271
2272 /**
2273  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2274  * @vsi: the vsi being adjusted
2275  **/
2276 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2277 {
2278         struct i40e_vsi_context ctxt;
2279         i40e_status ret;
2280
2281         if ((vsi->info.valid_sections &
2282              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2283             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2284                 return;  /* already enabled */
2285
2286         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2287         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2288                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2289
2290         ctxt.seid = vsi->seid;
2291         ctxt.info = vsi->info;
2292         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2293         if (ret) {
2294                 dev_info(&vsi->back->pdev->dev,
2295                          "update vlan stripping failed, err %s aq_err %s\n",
2296                          i40e_stat_str(&vsi->back->hw, ret),
2297                          i40e_aq_str(&vsi->back->hw,
2298                                      vsi->back->hw.aq.asq_last_status));
2299         }
2300 }
2301
2302 /**
2303  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2304  * @vsi: the vsi being adjusted
2305  **/
2306 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2307 {
2308         struct i40e_vsi_context ctxt;
2309         i40e_status ret;
2310
2311         if ((vsi->info.valid_sections &
2312              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2313             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2314              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2315                 return;  /* already disabled */
2316
2317         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2318         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2319                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2320
2321         ctxt.seid = vsi->seid;
2322         ctxt.info = vsi->info;
2323         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2324         if (ret) {
2325                 dev_info(&vsi->back->pdev->dev,
2326                          "update vlan stripping failed, err %s aq_err %s\n",
2327                          i40e_stat_str(&vsi->back->hw, ret),
2328                          i40e_aq_str(&vsi->back->hw,
2329                                      vsi->back->hw.aq.asq_last_status));
2330         }
2331 }
2332
2333 /**
2334  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2335  * @netdev: network interface to be adjusted
2336  * @features: netdev features to test if VLAN offload is enabled or not
2337  **/
2338 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2339 {
2340         struct i40e_netdev_priv *np = netdev_priv(netdev);
2341         struct i40e_vsi *vsi = np->vsi;
2342
2343         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2344                 i40e_vlan_stripping_enable(vsi);
2345         else
2346                 i40e_vlan_stripping_disable(vsi);
2347 }
2348
2349 /**
2350  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2351  * @vsi: the vsi being configured
2352  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2353  **/
2354 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2355 {
2356         struct i40e_mac_filter *f, *add_f;
2357         bool is_netdev, is_vf;
2358
2359         is_vf = (vsi->type == I40E_VSI_SRIOV);
2360         is_netdev = !!(vsi->netdev);
2361
2362         /* Locked once because all functions invoked below iterates list*/
2363         spin_lock_bh(&vsi->mac_filter_list_lock);
2364
2365         if (is_netdev) {
2366                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2367                                         is_vf, is_netdev);
2368                 if (!add_f) {
2369                         dev_info(&vsi->back->pdev->dev,
2370                                  "Could not add vlan filter %d for %pM\n",
2371                                  vid, vsi->netdev->dev_addr);
2372                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2373                         return -ENOMEM;
2374                 }
2375         }
2376
2377         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2378                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2379                 if (!add_f) {
2380                         dev_info(&vsi->back->pdev->dev,
2381                                  "Could not add vlan filter %d for %pM\n",
2382                                  vid, f->macaddr);
2383                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2384                         return -ENOMEM;
2385                 }
2386         }
2387
2388         /* Now if we add a vlan tag, make sure to check if it is the first
2389          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2390          * with 0, so we now accept untagged and specified tagged traffic
2391          * (and not any taged and untagged)
2392          */
2393         if (vid > 0) {
2394                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2395                                                   I40E_VLAN_ANY,
2396                                                   is_vf, is_netdev)) {
2397                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2398                                         I40E_VLAN_ANY, is_vf, is_netdev);
2399                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2400                                                 is_vf, is_netdev);
2401                         if (!add_f) {
2402                                 dev_info(&vsi->back->pdev->dev,
2403                                          "Could not add filter 0 for %pM\n",
2404                                          vsi->netdev->dev_addr);
2405                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2406                                 return -ENOMEM;
2407                         }
2408                 }
2409         }
2410
2411         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2412         if (vid > 0 && !vsi->info.pvid) {
2413                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2414                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2415                                               is_vf, is_netdev))
2416                                 continue;
2417                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2418                                         is_vf, is_netdev);
2419                         add_f = i40e_add_filter(vsi, f->macaddr,
2420                                                 0, is_vf, is_netdev);
2421                         if (!add_f) {
2422                                 dev_info(&vsi->back->pdev->dev,
2423                                          "Could not add filter 0 for %pM\n",
2424                                         f->macaddr);
2425                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2426                                 return -ENOMEM;
2427                         }
2428                 }
2429         }
2430
2431         spin_unlock_bh(&vsi->mac_filter_list_lock);
2432
2433         /* schedule our worker thread which will take care of
2434          * applying the new filter changes
2435          */
2436         i40e_service_event_schedule(vsi->back);
2437         return 0;
2438 }
2439
2440 /**
2441  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2442  * @vsi: the vsi being configured
2443  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2444  *
2445  * Return: 0 on success or negative otherwise
2446  **/
2447 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2448 {
2449         struct net_device *netdev = vsi->netdev;
2450         struct i40e_mac_filter *f, *add_f;
2451         bool is_vf, is_netdev;
2452         int filter_count = 0;
2453
2454         is_vf = (vsi->type == I40E_VSI_SRIOV);
2455         is_netdev = !!(netdev);
2456
2457         /* Locked once because all functions invoked below iterates list */
2458         spin_lock_bh(&vsi->mac_filter_list_lock);
2459
2460         if (is_netdev)
2461                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2462
2463         list_for_each_entry(f, &vsi->mac_filter_list, list)
2464                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2465
2466         /* go through all the filters for this VSI and if there is only
2467          * vid == 0 it means there are no other filters, so vid 0 must
2468          * be replaced with -1. This signifies that we should from now
2469          * on accept any traffic (with any tag present, or untagged)
2470          */
2471         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2472                 if (is_netdev) {
2473                         if (f->vlan &&
2474                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2475                                 filter_count++;
2476                 }
2477
2478                 if (f->vlan)
2479                         filter_count++;
2480         }
2481
2482         if (!filter_count && is_netdev) {
2483                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2484                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2485                                     is_vf, is_netdev);
2486                 if (!f) {
2487                         dev_info(&vsi->back->pdev->dev,
2488                                  "Could not add filter %d for %pM\n",
2489                                  I40E_VLAN_ANY, netdev->dev_addr);
2490                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2491                         return -ENOMEM;
2492                 }
2493         }
2494
2495         if (!filter_count) {
2496                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2497                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2498                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2499                                                 is_vf, is_netdev);
2500                         if (!add_f) {
2501                                 dev_info(&vsi->back->pdev->dev,
2502                                          "Could not add filter %d for %pM\n",
2503                                          I40E_VLAN_ANY, f->macaddr);
2504                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2505                                 return -ENOMEM;
2506                         }
2507                 }
2508         }
2509
2510         spin_unlock_bh(&vsi->mac_filter_list_lock);
2511
2512         /* schedule our worker thread which will take care of
2513          * applying the new filter changes
2514          */
2515         i40e_service_event_schedule(vsi->back);
2516         return 0;
2517 }
2518
2519 /**
2520  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2521  * @netdev: network interface to be adjusted
2522  * @vid: vlan id to be added
2523  *
2524  * net_device_ops implementation for adding vlan ids
2525  **/
2526 #ifdef I40E_FCOE
2527 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2528                          __always_unused __be16 proto, u16 vid)
2529 #else
2530 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2531                                 __always_unused __be16 proto, u16 vid)
2532 #endif
2533 {
2534         struct i40e_netdev_priv *np = netdev_priv(netdev);
2535         struct i40e_vsi *vsi = np->vsi;
2536         int ret = 0;
2537
2538         if (vid > 4095)
2539                 return -EINVAL;
2540
2541         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2542
2543         /* If the network stack called us with vid = 0 then
2544          * it is asking to receive priority tagged packets with
2545          * vlan id 0.  Our HW receives them by default when configured
2546          * to receive untagged packets so there is no need to add an
2547          * extra filter for vlan 0 tagged packets.
2548          */
2549         if (vid)
2550                 ret = i40e_vsi_add_vlan(vsi, vid);
2551
2552         if (!ret && (vid < VLAN_N_VID))
2553                 set_bit(vid, vsi->active_vlans);
2554
2555         return ret;
2556 }
2557
2558 /**
2559  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2560  * @netdev: network interface to be adjusted
2561  * @vid: vlan id to be removed
2562  *
2563  * net_device_ops implementation for removing vlan ids
2564  **/
2565 #ifdef I40E_FCOE
2566 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2567                           __always_unused __be16 proto, u16 vid)
2568 #else
2569 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2570                                  __always_unused __be16 proto, u16 vid)
2571 #endif
2572 {
2573         struct i40e_netdev_priv *np = netdev_priv(netdev);
2574         struct i40e_vsi *vsi = np->vsi;
2575
2576         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2577
2578         /* return code is ignored as there is nothing a user
2579          * can do about failure to remove and a log message was
2580          * already printed from the other function
2581          */
2582         i40e_vsi_kill_vlan(vsi, vid);
2583
2584         clear_bit(vid, vsi->active_vlans);
2585
2586         return 0;
2587 }
2588
2589 /**
2590  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2591  * @vsi: the vsi being brought back up
2592  **/
2593 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2594 {
2595         u16 vid;
2596
2597         if (!vsi->netdev)
2598                 return;
2599
2600         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2601
2602         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2603                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2604                                      vid);
2605 }
2606
2607 /**
2608  * i40e_vsi_add_pvid - Add pvid for the VSI
2609  * @vsi: the vsi being adjusted
2610  * @vid: the vlan id to set as a PVID
2611  **/
2612 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2613 {
2614         struct i40e_vsi_context ctxt;
2615         i40e_status ret;
2616
2617         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2618         vsi->info.pvid = cpu_to_le16(vid);
2619         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2620                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2621                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2622
2623         ctxt.seid = vsi->seid;
2624         ctxt.info = vsi->info;
2625         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2626         if (ret) {
2627                 dev_info(&vsi->back->pdev->dev,
2628                          "add pvid failed, err %s aq_err %s\n",
2629                          i40e_stat_str(&vsi->back->hw, ret),
2630                          i40e_aq_str(&vsi->back->hw,
2631                                      vsi->back->hw.aq.asq_last_status));
2632                 return -ENOENT;
2633         }
2634
2635         return 0;
2636 }
2637
2638 /**
2639  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2640  * @vsi: the vsi being adjusted
2641  *
2642  * Just use the vlan_rx_register() service to put it back to normal
2643  **/
2644 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2645 {
2646         i40e_vlan_stripping_disable(vsi);
2647
2648         vsi->info.pvid = 0;
2649 }
2650
2651 /**
2652  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2653  * @vsi: ptr to the VSI
2654  *
2655  * If this function returns with an error, then it's possible one or
2656  * more of the rings is populated (while the rest are not).  It is the
2657  * callers duty to clean those orphaned rings.
2658  *
2659  * Return 0 on success, negative on failure
2660  **/
2661 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2662 {
2663         int i, err = 0;
2664
2665         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2666                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2667
2668         return err;
2669 }
2670
2671 /**
2672  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2673  * @vsi: ptr to the VSI
2674  *
2675  * Free VSI's transmit software resources
2676  **/
2677 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2678 {
2679         int i;
2680
2681         if (!vsi->tx_rings)
2682                 return;
2683
2684         for (i = 0; i < vsi->num_queue_pairs; i++)
2685                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2686                         i40e_free_tx_resources(vsi->tx_rings[i]);
2687 }
2688
2689 /**
2690  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2691  * @vsi: ptr to the VSI
2692  *
2693  * If this function returns with an error, then it's possible one or
2694  * more of the rings is populated (while the rest are not).  It is the
2695  * callers duty to clean those orphaned rings.
2696  *
2697  * Return 0 on success, negative on failure
2698  **/
2699 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2700 {
2701         int i, err = 0;
2702
2703         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2704                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2705 #ifdef I40E_FCOE
2706         i40e_fcoe_setup_ddp_resources(vsi);
2707 #endif
2708         return err;
2709 }
2710
2711 /**
2712  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2713  * @vsi: ptr to the VSI
2714  *
2715  * Free all receive software resources
2716  **/
2717 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2718 {
2719         int i;
2720
2721         if (!vsi->rx_rings)
2722                 return;
2723
2724         for (i = 0; i < vsi->num_queue_pairs; i++)
2725                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2726                         i40e_free_rx_resources(vsi->rx_rings[i]);
2727 #ifdef I40E_FCOE
2728         i40e_fcoe_free_ddp_resources(vsi);
2729 #endif
2730 }
2731
2732 /**
2733  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2734  * @ring: The Tx ring to configure
2735  *
2736  * This enables/disables XPS for a given Tx descriptor ring
2737  * based on the TCs enabled for the VSI that ring belongs to.
2738  **/
2739 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2740 {
2741         struct i40e_vsi *vsi = ring->vsi;
2742         cpumask_var_t mask;
2743
2744         if (!ring->q_vector || !ring->netdev)
2745                 return;
2746
2747         /* Single TC mode enable XPS */
2748         if (vsi->tc_config.numtc <= 1) {
2749                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2750                         netif_set_xps_queue(ring->netdev,
2751                                             &ring->q_vector->affinity_mask,
2752                                             ring->queue_index);
2753         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2754                 /* Disable XPS to allow selection based on TC */
2755                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2756                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2757                 free_cpumask_var(mask);
2758         }
2759
2760         /* schedule our worker thread which will take care of
2761          * applying the new filter changes
2762          */
2763         i40e_service_event_schedule(vsi->back);
2764 }
2765
2766 /**
2767  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2768  * @ring: The Tx ring to configure
2769  *
2770  * Configure the Tx descriptor ring in the HMC context.
2771  **/
2772 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2773 {
2774         struct i40e_vsi *vsi = ring->vsi;
2775         u16 pf_q = vsi->base_queue + ring->queue_index;
2776         struct i40e_hw *hw = &vsi->back->hw;
2777         struct i40e_hmc_obj_txq tx_ctx;
2778         i40e_status err = 0;
2779         u32 qtx_ctl = 0;
2780
2781         /* some ATR related tx ring init */
2782         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2783                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2784                 ring->atr_count = 0;
2785         } else {
2786                 ring->atr_sample_rate = 0;
2787         }
2788
2789         /* configure XPS */
2790         i40e_config_xps_tx_ring(ring);
2791
2792         /* clear the context structure first */
2793         memset(&tx_ctx, 0, sizeof(tx_ctx));
2794
2795         tx_ctx.new_context = 1;
2796         tx_ctx.base = (ring->dma / 128);
2797         tx_ctx.qlen = ring->count;
2798         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2799                                                I40E_FLAG_FD_ATR_ENABLED));
2800 #ifdef I40E_FCOE
2801         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2802 #endif
2803         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2804         /* FDIR VSI tx ring can still use RS bit and writebacks */
2805         if (vsi->type != I40E_VSI_FDIR)
2806                 tx_ctx.head_wb_ena = 1;
2807         tx_ctx.head_wb_addr = ring->dma +
2808                               (ring->count * sizeof(struct i40e_tx_desc));
2809
2810         /* As part of VSI creation/update, FW allocates certain
2811          * Tx arbitration queue sets for each TC enabled for
2812          * the VSI. The FW returns the handles to these queue
2813          * sets as part of the response buffer to Add VSI,
2814          * Update VSI, etc. AQ commands. It is expected that
2815          * these queue set handles be associated with the Tx
2816          * queues by the driver as part of the TX queue context
2817          * initialization. This has to be done regardless of
2818          * DCB as by default everything is mapped to TC0.
2819          */
2820         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2821         tx_ctx.rdylist_act = 0;
2822
2823         /* clear the context in the HMC */
2824         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2825         if (err) {
2826                 dev_info(&vsi->back->pdev->dev,
2827                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2828                          ring->queue_index, pf_q, err);
2829                 return -ENOMEM;
2830         }
2831
2832         /* set the context in the HMC */
2833         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2834         if (err) {
2835                 dev_info(&vsi->back->pdev->dev,
2836                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2837                          ring->queue_index, pf_q, err);
2838                 return -ENOMEM;
2839         }
2840
2841         /* Now associate this queue with this PCI function */
2842         if (vsi->type == I40E_VSI_VMDQ2) {
2843                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2844                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2845                            I40E_QTX_CTL_VFVM_INDX_MASK;
2846         } else {
2847                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2848         }
2849
2850         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2851                     I40E_QTX_CTL_PF_INDX_MASK);
2852         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2853         i40e_flush(hw);
2854
2855         /* cache tail off for easier writes later */
2856         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2857
2858         return 0;
2859 }
2860
2861 /**
2862  * i40e_configure_rx_ring - Configure a receive ring context
2863  * @ring: The Rx ring to configure
2864  *
2865  * Configure the Rx descriptor ring in the HMC context.
2866  **/
2867 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2868 {
2869         struct i40e_vsi *vsi = ring->vsi;
2870         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2871         u16 pf_q = vsi->base_queue + ring->queue_index;
2872         struct i40e_hw *hw = &vsi->back->hw;
2873         struct i40e_hmc_obj_rxq rx_ctx;
2874         i40e_status err = 0;
2875
2876         ring->state = 0;
2877
2878         /* clear the context structure first */
2879         memset(&rx_ctx, 0, sizeof(rx_ctx));
2880
2881         ring->rx_buf_len = vsi->rx_buf_len;
2882
2883         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2884
2885         rx_ctx.base = (ring->dma / 128);
2886         rx_ctx.qlen = ring->count;
2887
2888         /* use 32 byte descriptors */
2889         rx_ctx.dsize = 1;
2890
2891         /* descriptor type is always zero
2892          * rx_ctx.dtype = 0;
2893          */
2894         rx_ctx.hsplit_0 = 0;
2895
2896         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2897         if (hw->revision_id == 0)
2898                 rx_ctx.lrxqthresh = 0;
2899         else
2900                 rx_ctx.lrxqthresh = 2;
2901         rx_ctx.crcstrip = 1;
2902         rx_ctx.l2tsel = 1;
2903         /* this controls whether VLAN is stripped from inner headers */
2904         rx_ctx.showiv = 0;
2905 #ifdef I40E_FCOE
2906         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2907 #endif
2908         /* set the prefena field to 1 because the manual says to */
2909         rx_ctx.prefena = 1;
2910
2911         /* clear the context in the HMC */
2912         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2913         if (err) {
2914                 dev_info(&vsi->back->pdev->dev,
2915                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2916                          ring->queue_index, pf_q, err);
2917                 return -ENOMEM;
2918         }
2919
2920         /* set the context in the HMC */
2921         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2922         if (err) {
2923                 dev_info(&vsi->back->pdev->dev,
2924                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2925                          ring->queue_index, pf_q, err);
2926                 return -ENOMEM;
2927         }
2928
2929         /* cache tail for quicker writes, and clear the reg before use */
2930         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2931         writel(0, ring->tail);
2932
2933         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2934
2935         return 0;
2936 }
2937
2938 /**
2939  * i40e_vsi_configure_tx - Configure the VSI for Tx
2940  * @vsi: VSI structure describing this set of rings and resources
2941  *
2942  * Configure the Tx VSI for operation.
2943  **/
2944 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2945 {
2946         int err = 0;
2947         u16 i;
2948
2949         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2950                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2951
2952         return err;
2953 }
2954
2955 /**
2956  * i40e_vsi_configure_rx - Configure the VSI for Rx
2957  * @vsi: the VSI being configured
2958  *
2959  * Configure the Rx VSI for operation.
2960  **/
2961 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2962 {
2963         int err = 0;
2964         u16 i;
2965
2966         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2967                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2968                                + ETH_FCS_LEN + VLAN_HLEN;
2969         else
2970                 vsi->max_frame = I40E_RXBUFFER_2048;
2971
2972         vsi->rx_buf_len = I40E_RXBUFFER_2048;
2973
2974 #ifdef I40E_FCOE
2975         /* setup rx buffer for FCoE */
2976         if ((vsi->type == I40E_VSI_FCOE) &&
2977             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2978                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2979                 vsi->max_frame = I40E_RXBUFFER_3072;
2980         }
2981
2982 #endif /* I40E_FCOE */
2983         /* round up for the chip's needs */
2984         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2985                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2986
2987         /* set up individual rings */
2988         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2989                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2990
2991         return err;
2992 }
2993
2994 /**
2995  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2996  * @vsi: ptr to the VSI
2997  **/
2998 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2999 {
3000         struct i40e_ring *tx_ring, *rx_ring;
3001         u16 qoffset, qcount;
3002         int i, n;
3003
3004         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3005                 /* Reset the TC information */
3006                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3007                         rx_ring = vsi->rx_rings[i];
3008                         tx_ring = vsi->tx_rings[i];
3009                         rx_ring->dcb_tc = 0;
3010                         tx_ring->dcb_tc = 0;
3011                 }
3012         }
3013
3014         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3015                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3016                         continue;
3017
3018                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3019                 qcount = vsi->tc_config.tc_info[n].qcount;
3020                 for (i = qoffset; i < (qoffset + qcount); i++) {
3021                         rx_ring = vsi->rx_rings[i];
3022                         tx_ring = vsi->tx_rings[i];
3023                         rx_ring->dcb_tc = n;
3024                         tx_ring->dcb_tc = n;
3025                 }
3026         }
3027 }
3028
3029 /**
3030  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3031  * @vsi: ptr to the VSI
3032  **/
3033 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3034 {
3035         if (vsi->netdev)
3036                 i40e_set_rx_mode(vsi->netdev);
3037 }
3038
3039 /**
3040  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3041  * @vsi: Pointer to the targeted VSI
3042  *
3043  * This function replays the hlist on the hw where all the SB Flow Director
3044  * filters were saved.
3045  **/
3046 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3047 {
3048         struct i40e_fdir_filter *filter;
3049         struct i40e_pf *pf = vsi->back;
3050         struct hlist_node *node;
3051
3052         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3053                 return;
3054
3055         hlist_for_each_entry_safe(filter, node,
3056                                   &pf->fdir_filter_list, fdir_node) {
3057                 i40e_add_del_fdir(vsi, filter, true);
3058         }
3059 }
3060
3061 /**
3062  * i40e_vsi_configure - Set up the VSI for action
3063  * @vsi: the VSI being configured
3064  **/
3065 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3066 {
3067         int err;
3068
3069         i40e_set_vsi_rx_mode(vsi);
3070         i40e_restore_vlan(vsi);
3071         i40e_vsi_config_dcb_rings(vsi);
3072         err = i40e_vsi_configure_tx(vsi);
3073         if (!err)
3074                 err = i40e_vsi_configure_rx(vsi);
3075
3076         return err;
3077 }
3078
3079 /**
3080  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3081  * @vsi: the VSI being configured
3082  **/
3083 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3084 {
3085         struct i40e_pf *pf = vsi->back;
3086         struct i40e_hw *hw = &pf->hw;
3087         u16 vector;
3088         int i, q;
3089         u32 qp;
3090
3091         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3092          * and PFINT_LNKLSTn registers, e.g.:
3093          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3094          */
3095         qp = vsi->base_queue;
3096         vector = vsi->base_vector;
3097         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3098                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3099
3100                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3101                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3102                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3103                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3104                      q_vector->rx.itr);
3105                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3106                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3107                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3108                      q_vector->tx.itr);
3109                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3110                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3111
3112                 /* Linked list for the queuepairs assigned to this vector */
3113                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3114                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3115                         u32 val;
3116
3117                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3118                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3119                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3120                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3121                               (I40E_QUEUE_TYPE_TX
3122                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3123
3124                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3125
3126                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3127                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3128                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3129                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3130                               (I40E_QUEUE_TYPE_RX
3131                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3132
3133                         /* Terminate the linked list */
3134                         if (q == (q_vector->num_ringpairs - 1))
3135                                 val |= (I40E_QUEUE_END_OF_LIST
3136                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3137
3138                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3139                         qp++;
3140                 }
3141         }
3142
3143         i40e_flush(hw);
3144 }
3145
3146 /**
3147  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3148  * @hw: ptr to the hardware info
3149  **/
3150 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3151 {
3152         struct i40e_hw *hw = &pf->hw;
3153         u32 val;
3154
3155         /* clear things first */
3156         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3157         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3158
3159         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3160               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3161               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3162               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3163               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3164               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3165               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3166               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3167
3168         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3169                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3170
3171         if (pf->flags & I40E_FLAG_PTP)
3172                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3173
3174         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3175
3176         /* SW_ITR_IDX = 0, but don't change INTENA */
3177         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3178                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3179
3180         /* OTHER_ITR_IDX = 0 */
3181         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3182 }
3183
3184 /**
3185  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3186  * @vsi: the VSI being configured
3187  **/
3188 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3189 {
3190         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3191         struct i40e_pf *pf = vsi->back;
3192         struct i40e_hw *hw = &pf->hw;
3193         u32 val;
3194
3195         /* set the ITR configuration */
3196         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3197         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3198         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3199         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3200         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3201         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3202         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3203
3204         i40e_enable_misc_int_causes(pf);
3205
3206         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3207         wr32(hw, I40E_PFINT_LNKLST0, 0);
3208
3209         /* Associate the queue pair to the vector and enable the queue int */
3210         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3211               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3212               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3213
3214         wr32(hw, I40E_QINT_RQCTL(0), val);
3215
3216         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3217               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3218               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3219
3220         wr32(hw, I40E_QINT_TQCTL(0), val);
3221         i40e_flush(hw);
3222 }
3223
3224 /**
3225  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3226  * @pf: board private structure
3227  **/
3228 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3229 {
3230         struct i40e_hw *hw = &pf->hw;
3231
3232         wr32(hw, I40E_PFINT_DYN_CTL0,
3233              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3234         i40e_flush(hw);
3235 }
3236
3237 /**
3238  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3239  * @pf: board private structure
3240  * @clearpba: true when all pending interrupt events should be cleared
3241  **/
3242 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3243 {
3244         struct i40e_hw *hw = &pf->hw;
3245         u32 val;
3246
3247         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3248               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3249               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3250
3251         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3252         i40e_flush(hw);
3253 }
3254
3255 /**
3256  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3257  * @irq: interrupt number
3258  * @data: pointer to a q_vector
3259  **/
3260 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3261 {
3262         struct i40e_q_vector *q_vector = data;
3263
3264         if (!q_vector->tx.ring && !q_vector->rx.ring)
3265                 return IRQ_HANDLED;
3266
3267         napi_schedule_irqoff(&q_vector->napi);
3268
3269         return IRQ_HANDLED;
3270 }
3271
3272 /**
3273  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3274  * @vsi: the VSI being configured
3275  * @basename: name for the vector
3276  *
3277  * Allocates MSI-X vectors and requests interrupts from the kernel.
3278  **/
3279 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3280 {
3281         int q_vectors = vsi->num_q_vectors;
3282         struct i40e_pf *pf = vsi->back;
3283         int base = vsi->base_vector;
3284         int rx_int_idx = 0;
3285         int tx_int_idx = 0;
3286         int vector, err;
3287
3288         for (vector = 0; vector < q_vectors; vector++) {
3289                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3290
3291                 if (q_vector->tx.ring && q_vector->rx.ring) {
3292                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3293                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3294                         tx_int_idx++;
3295                 } else if (q_vector->rx.ring) {
3296                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3297                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3298                 } else if (q_vector->tx.ring) {
3299                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3300                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3301                 } else {
3302                         /* skip this unused q_vector */
3303                         continue;
3304                 }
3305                 err = request_irq(pf->msix_entries[base + vector].vector,
3306                                   vsi->irq_handler,
3307                                   0,
3308                                   q_vector->name,
3309                                   q_vector);
3310                 if (err) {
3311                         dev_info(&pf->pdev->dev,
3312                                  "MSIX request_irq failed, error: %d\n", err);
3313                         goto free_queue_irqs;
3314                 }
3315                 /* assign the mask for this irq */
3316                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3317                                       &q_vector->affinity_mask);
3318         }
3319
3320         vsi->irqs_ready = true;
3321         return 0;
3322
3323 free_queue_irqs:
3324         while (vector) {
3325                 vector--;
3326                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3327                                       NULL);
3328                 free_irq(pf->msix_entries[base + vector].vector,
3329                          &(vsi->q_vectors[vector]));
3330         }
3331         return err;
3332 }
3333
3334 /**
3335  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3336  * @vsi: the VSI being un-configured
3337  **/
3338 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3339 {
3340         struct i40e_pf *pf = vsi->back;
3341         struct i40e_hw *hw = &pf->hw;
3342         int base = vsi->base_vector;
3343         int i;
3344
3345         for (i = 0; i < vsi->num_queue_pairs; i++) {
3346                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3347                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3348         }
3349
3350         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3351                 for (i = vsi->base_vector;
3352                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3353                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3354
3355                 i40e_flush(hw);
3356                 for (i = 0; i < vsi->num_q_vectors; i++)
3357                         synchronize_irq(pf->msix_entries[i + base].vector);
3358         } else {
3359                 /* Legacy and MSI mode - this stops all interrupt handling */
3360                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3361                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3362                 i40e_flush(hw);
3363                 synchronize_irq(pf->pdev->irq);
3364         }
3365 }
3366
3367 /**
3368  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3369  * @vsi: the VSI being configured
3370  **/
3371 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3372 {
3373         struct i40e_pf *pf = vsi->back;
3374         int i;
3375
3376         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3377                 for (i = 0; i < vsi->num_q_vectors; i++)
3378                         i40e_irq_dynamic_enable(vsi, i);
3379         } else {
3380                 i40e_irq_dynamic_enable_icr0(pf, true);
3381         }
3382
3383         i40e_flush(&pf->hw);
3384         return 0;
3385 }
3386
3387 /**
3388  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3389  * @pf: board private structure
3390  **/
3391 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3392 {
3393         /* Disable ICR 0 */
3394         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3395         i40e_flush(&pf->hw);
3396 }
3397
3398 /**
3399  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3400  * @irq: interrupt number
3401  * @data: pointer to a q_vector
3402  *
3403  * This is the handler used for all MSI/Legacy interrupts, and deals
3404  * with both queue and non-queue interrupts.  This is also used in
3405  * MSIX mode to handle the non-queue interrupts.
3406  **/
3407 static irqreturn_t i40e_intr(int irq, void *data)
3408 {
3409         struct i40e_pf *pf = (struct i40e_pf *)data;
3410         struct i40e_hw *hw = &pf->hw;
3411         irqreturn_t ret = IRQ_NONE;
3412         u32 icr0, icr0_remaining;
3413         u32 val, ena_mask;
3414
3415         icr0 = rd32(hw, I40E_PFINT_ICR0);
3416         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3417
3418         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3419         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3420                 goto enable_intr;
3421
3422         /* if interrupt but no bits showing, must be SWINT */
3423         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3424             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3425                 pf->sw_int_count++;
3426
3427         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3428             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3429                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3430                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3431                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3432         }
3433
3434         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3435         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3436                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3437                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3438
3439                 /* We do not have a way to disarm Queue causes while leaving
3440                  * interrupt enabled for all other causes, ideally
3441                  * interrupt should be disabled while we are in NAPI but
3442                  * this is not a performance path and napi_schedule()
3443                  * can deal with rescheduling.
3444                  */
3445                 if (!test_bit(__I40E_DOWN, &pf->state))
3446                         napi_schedule_irqoff(&q_vector->napi);
3447         }
3448
3449         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3450                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3451                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3452                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3453         }
3454
3455         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3456                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3457                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3458         }
3459
3460         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3461                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3462                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3463         }
3464
3465         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3466                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3467                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3468                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3469                 val = rd32(hw, I40E_GLGEN_RSTAT);
3470                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3471                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3472                 if (val == I40E_RESET_CORER) {
3473                         pf->corer_count++;
3474                 } else if (val == I40E_RESET_GLOBR) {
3475                         pf->globr_count++;
3476                 } else if (val == I40E_RESET_EMPR) {
3477                         pf->empr_count++;
3478                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3479                 }
3480         }
3481
3482         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3483                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3484                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3485                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3486                          rd32(hw, I40E_PFHMC_ERRORINFO),
3487                          rd32(hw, I40E_PFHMC_ERRORDATA));
3488         }
3489
3490         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3491                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3492
3493                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3494                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3495                         i40e_ptp_tx_hwtstamp(pf);
3496                 }
3497         }
3498
3499         /* If a critical error is pending we have no choice but to reset the
3500          * device.
3501          * Report and mask out any remaining unexpected interrupts.
3502          */
3503         icr0_remaining = icr0 & ena_mask;
3504         if (icr0_remaining) {
3505                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3506                          icr0_remaining);
3507                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3508                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3509                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3510                         dev_info(&pf->pdev->dev, "device will be reset\n");
3511                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3512                         i40e_service_event_schedule(pf);
3513                 }
3514                 ena_mask &= ~icr0_remaining;
3515         }
3516         ret = IRQ_HANDLED;
3517
3518 enable_intr:
3519         /* re-enable interrupt causes */
3520         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3521         if (!test_bit(__I40E_DOWN, &pf->state)) {
3522                 i40e_service_event_schedule(pf);
3523                 i40e_irq_dynamic_enable_icr0(pf, false);
3524         }
3525
3526         return ret;
3527 }
3528
3529 /**
3530  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3531  * @tx_ring:  tx ring to clean
3532  * @budget:   how many cleans we're allowed
3533  *
3534  * Returns true if there's any budget left (e.g. the clean is finished)
3535  **/
3536 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3537 {
3538         struct i40e_vsi *vsi = tx_ring->vsi;
3539         u16 i = tx_ring->next_to_clean;
3540         struct i40e_tx_buffer *tx_buf;
3541         struct i40e_tx_desc *tx_desc;
3542
3543         tx_buf = &tx_ring->tx_bi[i];
3544         tx_desc = I40E_TX_DESC(tx_ring, i);
3545         i -= tx_ring->count;
3546
3547         do {
3548                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3549
3550                 /* if next_to_watch is not set then there is no work pending */
3551                 if (!eop_desc)
3552                         break;
3553
3554                 /* prevent any other reads prior to eop_desc */
3555                 read_barrier_depends();
3556
3557                 /* if the descriptor isn't done, no work yet to do */
3558                 if (!(eop_desc->cmd_type_offset_bsz &
3559                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3560                         break;
3561
3562                 /* clear next_to_watch to prevent false hangs */
3563                 tx_buf->next_to_watch = NULL;
3564
3565                 tx_desc->buffer_addr = 0;
3566                 tx_desc->cmd_type_offset_bsz = 0;
3567                 /* move past filter desc */
3568                 tx_buf++;
3569                 tx_desc++;
3570                 i++;
3571                 if (unlikely(!i)) {
3572                         i -= tx_ring->count;
3573                         tx_buf = tx_ring->tx_bi;
3574                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3575                 }
3576                 /* unmap skb header data */
3577                 dma_unmap_single(tx_ring->dev,
3578                                  dma_unmap_addr(tx_buf, dma),
3579                                  dma_unmap_len(tx_buf, len),
3580                                  DMA_TO_DEVICE);
3581                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3582                         kfree(tx_buf->raw_buf);
3583
3584                 tx_buf->raw_buf = NULL;
3585                 tx_buf->tx_flags = 0;
3586                 tx_buf->next_to_watch = NULL;
3587                 dma_unmap_len_set(tx_buf, len, 0);
3588                 tx_desc->buffer_addr = 0;
3589                 tx_desc->cmd_type_offset_bsz = 0;
3590
3591                 /* move us past the eop_desc for start of next FD desc */
3592                 tx_buf++;
3593                 tx_desc++;
3594                 i++;
3595                 if (unlikely(!i)) {
3596                         i -= tx_ring->count;
3597                         tx_buf = tx_ring->tx_bi;
3598                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3599                 }
3600
3601                 /* update budget accounting */
3602                 budget--;
3603         } while (likely(budget));
3604
3605         i += tx_ring->count;
3606         tx_ring->next_to_clean = i;
3607
3608         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3609                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3610
3611         return budget > 0;
3612 }
3613
3614 /**
3615  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3616  * @irq: interrupt number
3617  * @data: pointer to a q_vector
3618  **/
3619 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3620 {
3621         struct i40e_q_vector *q_vector = data;
3622         struct i40e_vsi *vsi;
3623
3624         if (!q_vector->tx.ring)
3625                 return IRQ_HANDLED;
3626
3627         vsi = q_vector->tx.ring->vsi;
3628         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3629
3630         return IRQ_HANDLED;
3631 }
3632
3633 /**
3634  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3635  * @vsi: the VSI being configured
3636  * @v_idx: vector index
3637  * @qp_idx: queue pair index
3638  **/
3639 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3640 {
3641         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3642         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3643         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3644
3645         tx_ring->q_vector = q_vector;
3646         tx_ring->next = q_vector->tx.ring;
3647         q_vector->tx.ring = tx_ring;
3648         q_vector->tx.count++;
3649
3650         rx_ring->q_vector = q_vector;
3651         rx_ring->next = q_vector->rx.ring;
3652         q_vector->rx.ring = rx_ring;
3653         q_vector->rx.count++;
3654 }
3655
3656 /**
3657  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3658  * @vsi: the VSI being configured
3659  *
3660  * This function maps descriptor rings to the queue-specific vectors
3661  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3662  * one vector per queue pair, but on a constrained vector budget, we
3663  * group the queue pairs as "efficiently" as possible.
3664  **/
3665 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3666 {
3667         int qp_remaining = vsi->num_queue_pairs;
3668         int q_vectors = vsi->num_q_vectors;
3669         int num_ringpairs;
3670         int v_start = 0;
3671         int qp_idx = 0;
3672
3673         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3674          * group them so there are multiple queues per vector.
3675          * It is also important to go through all the vectors available to be
3676          * sure that if we don't use all the vectors, that the remaining vectors
3677          * are cleared. This is especially important when decreasing the
3678          * number of queues in use.
3679          */
3680         for (; v_start < q_vectors; v_start++) {
3681                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3682
3683                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3684
3685                 q_vector->num_ringpairs = num_ringpairs;
3686
3687                 q_vector->rx.count = 0;
3688                 q_vector->tx.count = 0;
3689                 q_vector->rx.ring = NULL;
3690                 q_vector->tx.ring = NULL;
3691
3692                 while (num_ringpairs--) {
3693                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3694                         qp_idx++;
3695                         qp_remaining--;
3696                 }
3697         }
3698 }
3699
3700 /**
3701  * i40e_vsi_request_irq - Request IRQ from the OS
3702  * @vsi: the VSI being configured
3703  * @basename: name for the vector
3704  **/
3705 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3706 {
3707         struct i40e_pf *pf = vsi->back;
3708         int err;
3709
3710         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3711                 err = i40e_vsi_request_irq_msix(vsi, basename);
3712         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3713                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3714                                   pf->int_name, pf);
3715         else
3716                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3717                                   pf->int_name, pf);
3718
3719         if (err)
3720                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3721
3722         return err;
3723 }
3724
3725 #ifdef CONFIG_NET_POLL_CONTROLLER
3726 /**
3727  * i40e_netpoll - A Polling 'interrupt' handler
3728  * @netdev: network interface device structure
3729  *
3730  * This is used by netconsole to send skbs without having to re-enable
3731  * interrupts.  It's not called while the normal interrupt routine is executing.
3732  **/
3733 #ifdef I40E_FCOE
3734 void i40e_netpoll(struct net_device *netdev)
3735 #else
3736 static void i40e_netpoll(struct net_device *netdev)
3737 #endif
3738 {
3739         struct i40e_netdev_priv *np = netdev_priv(netdev);
3740         struct i40e_vsi *vsi = np->vsi;
3741         struct i40e_pf *pf = vsi->back;
3742         int i;
3743
3744         /* if interface is down do nothing */
3745         if (test_bit(__I40E_DOWN, &vsi->state))
3746                 return;
3747
3748         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3749                 for (i = 0; i < vsi->num_q_vectors; i++)
3750                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3751         } else {
3752                 i40e_intr(pf->pdev->irq, netdev);
3753         }
3754 }
3755 #endif
3756
3757 /**
3758  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3759  * @pf: the PF being configured
3760  * @pf_q: the PF queue
3761  * @enable: enable or disable state of the queue
3762  *
3763  * This routine will wait for the given Tx queue of the PF to reach the
3764  * enabled or disabled state.
3765  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3766  * multiple retries; else will return 0 in case of success.
3767  **/
3768 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3769 {
3770         int i;
3771         u32 tx_reg;
3772
3773         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3774                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3775                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3776                         break;
3777
3778                 usleep_range(10, 20);
3779         }
3780         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3781                 return -ETIMEDOUT;
3782
3783         return 0;
3784 }
3785
3786 /**
3787  * i40e_vsi_control_tx - Start or stop a VSI's rings
3788  * @vsi: the VSI being configured
3789  * @enable: start or stop the rings
3790  **/
3791 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3792 {
3793         struct i40e_pf *pf = vsi->back;
3794         struct i40e_hw *hw = &pf->hw;
3795         int i, j, pf_q, ret = 0;
3796         u32 tx_reg;
3797
3798         pf_q = vsi->base_queue;
3799         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3800
3801                 /* warn the TX unit of coming changes */
3802                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3803                 if (!enable)
3804                         usleep_range(10, 20);
3805
3806                 for (j = 0; j < 50; j++) {
3807                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3808                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3809                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3810                                 break;
3811                         usleep_range(1000, 2000);
3812                 }
3813                 /* Skip if the queue is already in the requested state */
3814                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3815                         continue;
3816
3817                 /* turn on/off the queue */
3818                 if (enable) {
3819                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3820                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3821                 } else {
3822                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3823                 }
3824
3825                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3826                 /* No waiting for the Tx queue to disable */
3827                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3828                         continue;
3829
3830                 /* wait for the change to finish */
3831                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3832                 if (ret) {
3833                         dev_info(&pf->pdev->dev,
3834                                  "VSI seid %d Tx ring %d %sable timeout\n",
3835                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3836                         break;
3837                 }
3838         }
3839
3840         if (hw->revision_id == 0)
3841                 mdelay(50);
3842         return ret;
3843 }
3844
3845 /**
3846  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3847  * @pf: the PF being configured
3848  * @pf_q: the PF queue
3849  * @enable: enable or disable state of the queue
3850  *
3851  * This routine will wait for the given Rx queue of the PF to reach the
3852  * enabled or disabled state.
3853  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3854  * multiple retries; else will return 0 in case of success.
3855  **/
3856 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3857 {
3858         int i;
3859         u32 rx_reg;
3860
3861         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3862                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3863                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3864                         break;
3865
3866                 usleep_range(10, 20);
3867         }
3868         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3869                 return -ETIMEDOUT;
3870
3871         return 0;
3872 }
3873
3874 /**
3875  * i40e_vsi_control_rx - Start or stop a VSI's rings
3876  * @vsi: the VSI being configured
3877  * @enable: start or stop the rings
3878  **/
3879 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3880 {
3881         struct i40e_pf *pf = vsi->back;
3882         struct i40e_hw *hw = &pf->hw;
3883         int i, j, pf_q, ret = 0;
3884         u32 rx_reg;
3885
3886         pf_q = vsi->base_queue;
3887         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3888                 for (j = 0; j < 50; j++) {
3889                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3890                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3891                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3892                                 break;
3893                         usleep_range(1000, 2000);
3894                 }
3895
3896                 /* Skip if the queue is already in the requested state */
3897                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3898                         continue;
3899
3900                 /* turn on/off the queue */
3901                 if (enable)
3902                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3903                 else
3904                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3905                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3906                 /* No waiting for the Tx queue to disable */
3907                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3908                         continue;
3909
3910                 /* wait for the change to finish */
3911                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3912                 if (ret) {
3913                         dev_info(&pf->pdev->dev,
3914                                  "VSI seid %d Rx ring %d %sable timeout\n",
3915                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3916                         break;
3917                 }
3918         }
3919
3920         return ret;
3921 }
3922
3923 /**
3924  * i40e_vsi_control_rings - Start or stop a VSI's rings
3925  * @vsi: the VSI being configured
3926  * @enable: start or stop the rings
3927  **/
3928 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3929 {
3930         int ret = 0;
3931
3932         /* do rx first for enable and last for disable */
3933         if (request) {
3934                 ret = i40e_vsi_control_rx(vsi, request);
3935                 if (ret)
3936                         return ret;
3937                 ret = i40e_vsi_control_tx(vsi, request);
3938         } else {
3939                 /* Ignore return value, we need to shutdown whatever we can */
3940                 i40e_vsi_control_tx(vsi, request);
3941                 i40e_vsi_control_rx(vsi, request);
3942         }
3943
3944         return ret;
3945 }
3946
3947 /**
3948  * i40e_vsi_free_irq - Free the irq association with the OS
3949  * @vsi: the VSI being configured
3950  **/
3951 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3952 {
3953         struct i40e_pf *pf = vsi->back;
3954         struct i40e_hw *hw = &pf->hw;
3955         int base = vsi->base_vector;
3956         u32 val, qp;
3957         int i;
3958
3959         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3960                 if (!vsi->q_vectors)
3961                         return;
3962
3963                 if (!vsi->irqs_ready)
3964                         return;
3965
3966                 vsi->irqs_ready = false;
3967                 for (i = 0; i < vsi->num_q_vectors; i++) {
3968                         u16 vector = i + base;
3969
3970                         /* free only the irqs that were actually requested */
3971                         if (!vsi->q_vectors[i] ||
3972                             !vsi->q_vectors[i]->num_ringpairs)
3973                                 continue;
3974
3975                         /* clear the affinity_mask in the IRQ descriptor */
3976                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3977                                               NULL);
3978                         synchronize_irq(pf->msix_entries[vector].vector);
3979                         free_irq(pf->msix_entries[vector].vector,
3980                                  vsi->q_vectors[i]);
3981
3982                         /* Tear down the interrupt queue link list
3983                          *
3984                          * We know that they come in pairs and always
3985                          * the Rx first, then the Tx.  To clear the
3986                          * link list, stick the EOL value into the
3987                          * next_q field of the registers.
3988                          */
3989                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3990                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3991                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3992                         val |= I40E_QUEUE_END_OF_LIST
3993                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3994                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3995
3996                         while (qp != I40E_QUEUE_END_OF_LIST) {
3997                                 u32 next;
3998
3999                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4000
4001                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4002                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4003                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4004                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4005
4006                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4007                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4008
4009                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4010
4011                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4012
4013                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4014                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4015
4016                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4017                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4018                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4019                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4020
4021                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4022                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4023
4024                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4025                                 qp = next;
4026                         }
4027                 }
4028         } else {
4029                 free_irq(pf->pdev->irq, pf);
4030
4031                 val = rd32(hw, I40E_PFINT_LNKLST0);
4032                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4033                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4034                 val |= I40E_QUEUE_END_OF_LIST
4035                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4036                 wr32(hw, I40E_PFINT_LNKLST0, val);
4037
4038                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4039                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4040                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4041                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4042                          I40E_QINT_RQCTL_INTEVENT_MASK);
4043
4044                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4045                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4046
4047                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4048
4049                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4050
4051                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4052                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4053                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4054                          I40E_QINT_TQCTL_INTEVENT_MASK);
4055
4056                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4057                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4058
4059                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4060         }
4061 }
4062
4063 /**
4064  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4065  * @vsi: the VSI being configured
4066  * @v_idx: Index of vector to be freed
4067  *
4068  * This function frees the memory allocated to the q_vector.  In addition if
4069  * NAPI is enabled it will delete any references to the NAPI struct prior
4070  * to freeing the q_vector.
4071  **/
4072 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4073 {
4074         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4075         struct i40e_ring *ring;
4076
4077         if (!q_vector)
4078                 return;
4079
4080         /* disassociate q_vector from rings */
4081         i40e_for_each_ring(ring, q_vector->tx)
4082                 ring->q_vector = NULL;
4083
4084         i40e_for_each_ring(ring, q_vector->rx)
4085                 ring->q_vector = NULL;
4086
4087         /* only VSI w/ an associated netdev is set up w/ NAPI */
4088         if (vsi->netdev)
4089                 netif_napi_del(&q_vector->napi);
4090
4091         vsi->q_vectors[v_idx] = NULL;
4092
4093         kfree_rcu(q_vector, rcu);
4094 }
4095
4096 /**
4097  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4098  * @vsi: the VSI being un-configured
4099  *
4100  * This frees the memory allocated to the q_vectors and
4101  * deletes references to the NAPI struct.
4102  **/
4103 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4104 {
4105         int v_idx;
4106
4107         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4108                 i40e_free_q_vector(vsi, v_idx);
4109 }
4110
4111 /**
4112  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4113  * @pf: board private structure
4114  **/
4115 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4116 {
4117         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4118         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4119                 pci_disable_msix(pf->pdev);
4120                 kfree(pf->msix_entries);
4121                 pf->msix_entries = NULL;
4122                 kfree(pf->irq_pile);
4123                 pf->irq_pile = NULL;
4124         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4125                 pci_disable_msi(pf->pdev);
4126         }
4127         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4128 }
4129
4130 /**
4131  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4132  * @pf: board private structure
4133  *
4134  * We go through and clear interrupt specific resources and reset the structure
4135  * to pre-load conditions
4136  **/
4137 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4138 {
4139         int i;
4140
4141         i40e_stop_misc_vector(pf);
4142         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4143                 synchronize_irq(pf->msix_entries[0].vector);
4144                 free_irq(pf->msix_entries[0].vector, pf);
4145         }
4146
4147         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4148                       I40E_IWARP_IRQ_PILE_ID);
4149
4150         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4151         for (i = 0; i < pf->num_alloc_vsi; i++)
4152                 if (pf->vsi[i])
4153                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4154         i40e_reset_interrupt_capability(pf);
4155 }
4156
4157 /**
4158  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4159  * @vsi: the VSI being configured
4160  **/
4161 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4162 {
4163         int q_idx;
4164
4165         if (!vsi->netdev)
4166                 return;
4167
4168         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4169                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4170 }
4171
4172 /**
4173  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4174  * @vsi: the VSI being configured
4175  **/
4176 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4177 {
4178         int q_idx;
4179
4180         if (!vsi->netdev)
4181                 return;
4182
4183         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4184                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4185 }
4186
4187 /**
4188  * i40e_vsi_close - Shut down a VSI
4189  * @vsi: the vsi to be quelled
4190  **/
4191 static void i40e_vsi_close(struct i40e_vsi *vsi)
4192 {
4193         bool reset = false;
4194
4195         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4196                 i40e_down(vsi);
4197         i40e_vsi_free_irq(vsi);
4198         i40e_vsi_free_tx_resources(vsi);
4199         i40e_vsi_free_rx_resources(vsi);
4200         vsi->current_netdev_flags = 0;
4201         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4202                 reset = true;
4203         i40e_notify_client_of_netdev_close(vsi, reset);
4204 }
4205
4206 /**
4207  * i40e_quiesce_vsi - Pause a given VSI
4208  * @vsi: the VSI being paused
4209  **/
4210 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4211 {
4212         if (test_bit(__I40E_DOWN, &vsi->state))
4213                 return;
4214
4215         /* No need to disable FCoE VSI when Tx suspended */
4216         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4217             vsi->type == I40E_VSI_FCOE) {
4218                 dev_dbg(&vsi->back->pdev->dev,
4219                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4220                 return;
4221         }
4222
4223         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4224         if (vsi->netdev && netif_running(vsi->netdev))
4225                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4226         else
4227                 i40e_vsi_close(vsi);
4228 }
4229
4230 /**
4231  * i40e_unquiesce_vsi - Resume a given VSI
4232  * @vsi: the VSI being resumed
4233  **/
4234 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4235 {
4236         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4237                 return;
4238
4239         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4240         if (vsi->netdev && netif_running(vsi->netdev))
4241                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4242         else
4243                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4244 }
4245
4246 /**
4247  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4248  * @pf: the PF
4249  **/
4250 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4251 {
4252         int v;
4253
4254         for (v = 0; v < pf->num_alloc_vsi; v++) {
4255                 if (pf->vsi[v])
4256                         i40e_quiesce_vsi(pf->vsi[v]);
4257         }
4258 }
4259
4260 /**
4261  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4262  * @pf: the PF
4263  **/
4264 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4265 {
4266         int v;
4267
4268         for (v = 0; v < pf->num_alloc_vsi; v++) {
4269                 if (pf->vsi[v])
4270                         i40e_unquiesce_vsi(pf->vsi[v]);
4271         }
4272 }
4273
4274 #ifdef CONFIG_I40E_DCB
4275 /**
4276  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4277  * @vsi: the VSI being configured
4278  *
4279  * This function waits for the given VSI's queues to be disabled.
4280  **/
4281 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4282 {
4283         struct i40e_pf *pf = vsi->back;
4284         int i, pf_q, ret;
4285
4286         pf_q = vsi->base_queue;
4287         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4288                 /* Check and wait for the disable status of the queue */
4289                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4290                 if (ret) {
4291                         dev_info(&pf->pdev->dev,
4292                                  "VSI seid %d Tx ring %d disable timeout\n",
4293                                  vsi->seid, pf_q);
4294                         return ret;
4295                 }
4296         }
4297
4298         pf_q = vsi->base_queue;
4299         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4300                 /* Check and wait for the disable status of the queue */
4301                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4302                 if (ret) {
4303                         dev_info(&pf->pdev->dev,
4304                                  "VSI seid %d Rx ring %d disable timeout\n",
4305                                  vsi->seid, pf_q);
4306                         return ret;
4307                 }
4308         }
4309
4310         return 0;
4311 }
4312
4313 /**
4314  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4315  * @pf: the PF
4316  *
4317  * This function waits for the queues to be in disabled state for all the
4318  * VSIs that are managed by this PF.
4319  **/
4320 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4321 {
4322         int v, ret = 0;
4323
4324         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4325                 /* No need to wait for FCoE VSI queues */
4326                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4327                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4328                         if (ret)
4329                                 break;
4330                 }
4331         }
4332
4333         return ret;
4334 }
4335
4336 #endif
4337
4338 /**
4339  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4340  * @q_idx: TX queue number
4341  * @vsi: Pointer to VSI struct
4342  *
4343  * This function checks specified queue for given VSI. Detects hung condition.
4344  * Sets hung bit since it is two step process. Before next run of service task
4345  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4346  * hung condition remain unchanged and during subsequent run, this function
4347  * issues SW interrupt to recover from hung condition.
4348  **/
4349 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4350 {
4351         struct i40e_ring *tx_ring = NULL;
4352         struct i40e_pf  *pf;
4353         u32 head, val, tx_pending_hw;
4354         int i;
4355
4356         pf = vsi->back;
4357
4358         /* now that we have an index, find the tx_ring struct */
4359         for (i = 0; i < vsi->num_queue_pairs; i++) {
4360                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4361                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4362                                 tx_ring = vsi->tx_rings[i];
4363                                 break;
4364                         }
4365                 }
4366         }
4367
4368         if (!tx_ring)
4369                 return;
4370
4371         /* Read interrupt register */
4372         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4373                 val = rd32(&pf->hw,
4374                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4375                                                tx_ring->vsi->base_vector - 1));
4376         else
4377                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4378
4379         head = i40e_get_head(tx_ring);
4380
4381         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4382
4383         /* HW is done executing descriptors, updated HEAD write back,
4384          * but SW hasn't processed those descriptors. If interrupt is
4385          * not generated from this point ON, it could result into
4386          * dev_watchdog detecting timeout on those netdev_queue,
4387          * hence proactively trigger SW interrupt.
4388          */
4389         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4390                 /* NAPI Poll didn't run and clear since it was set */
4391                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4392                                        &tx_ring->q_vector->hung_detected)) {
4393                         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",
4394                                     vsi->seid, q_idx, tx_pending_hw,
4395                                     tx_ring->next_to_clean, head,
4396                                     tx_ring->next_to_use,
4397                                     readl(tx_ring->tail));
4398                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4399                                     vsi->seid, q_idx, val);
4400                         i40e_force_wb(vsi, tx_ring->q_vector);
4401                 } else {
4402                         /* First Chance - detected possible hung */
4403                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4404                                 &tx_ring->q_vector->hung_detected);
4405                 }
4406         }
4407
4408         /* This is the case where we have interrupts missing,
4409          * so the tx_pending in HW will most likely be 0, but we
4410          * will have tx_pending in SW since the WB happened but the
4411          * interrupt got lost.
4412          */
4413         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4414             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4415                 if (napi_reschedule(&tx_ring->q_vector->napi))
4416                         tx_ring->tx_stats.tx_lost_interrupt++;
4417         }
4418 }
4419
4420 /**
4421  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4422  * @pf:  pointer to PF struct
4423  *
4424  * LAN VSI has netdev and netdev has TX queues. This function is to check
4425  * each of those TX queues if they are hung, trigger recovery by issuing
4426  * SW interrupt.
4427  **/
4428 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4429 {
4430         struct net_device *netdev;
4431         struct i40e_vsi *vsi;
4432         int i;
4433
4434         /* Only for LAN VSI */
4435         vsi = pf->vsi[pf->lan_vsi];
4436
4437         if (!vsi)
4438                 return;
4439
4440         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4441         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4442             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4443                 return;
4444
4445         /* Make sure type is MAIN VSI */
4446         if (vsi->type != I40E_VSI_MAIN)
4447                 return;
4448
4449         netdev = vsi->netdev;
4450         if (!netdev)
4451                 return;
4452
4453         /* Bail out if netif_carrier is not OK */
4454         if (!netif_carrier_ok(netdev))
4455                 return;
4456
4457         /* Go thru' TX queues for netdev */
4458         for (i = 0; i < netdev->num_tx_queues; i++) {
4459                 struct netdev_queue *q;
4460
4461                 q = netdev_get_tx_queue(netdev, i);
4462                 if (q)
4463                         i40e_detect_recover_hung_queue(i, vsi);
4464         }
4465 }
4466
4467 /**
4468  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4469  * @pf: pointer to PF
4470  *
4471  * Get TC map for ISCSI PF type that will include iSCSI TC
4472  * and LAN TC.
4473  **/
4474 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4475 {
4476         struct i40e_dcb_app_priority_table app;
4477         struct i40e_hw *hw = &pf->hw;
4478         u8 enabled_tc = 1; /* TC0 is always enabled */
4479         u8 tc, i;
4480         /* Get the iSCSI APP TLV */
4481         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4482
4483         for (i = 0; i < dcbcfg->numapps; i++) {
4484                 app = dcbcfg->app[i];
4485                 if (app.selector == I40E_APP_SEL_TCPIP &&
4486                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4487                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4488                         enabled_tc |= BIT(tc);
4489                         break;
4490                 }
4491         }
4492
4493         return enabled_tc;
4494 }
4495
4496 /**
4497  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4498  * @dcbcfg: the corresponding DCBx configuration structure
4499  *
4500  * Return the number of TCs from given DCBx configuration
4501  **/
4502 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4503 {
4504         u8 num_tc = 0;
4505         int i;
4506
4507         /* Scan the ETS Config Priority Table to find
4508          * traffic class enabled for a given priority
4509          * and use the traffic class index to get the
4510          * number of traffic classes enabled
4511          */
4512         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4513                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4514                         num_tc = dcbcfg->etscfg.prioritytable[i];
4515         }
4516
4517         /* Traffic class index starts from zero so
4518          * increment to return the actual count
4519          */
4520         return num_tc + 1;
4521 }
4522
4523 /**
4524  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4525  * @dcbcfg: the corresponding DCBx configuration structure
4526  *
4527  * Query the current DCB configuration and return the number of
4528  * traffic classes enabled from the given DCBX config
4529  **/
4530 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4531 {
4532         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4533         u8 enabled_tc = 1;
4534         u8 i;
4535
4536         for (i = 0; i < num_tc; i++)
4537                 enabled_tc |= BIT(i);
4538
4539         return enabled_tc;
4540 }
4541
4542 /**
4543  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4544  * @pf: PF being queried
4545  *
4546  * Return number of traffic classes enabled for the given PF
4547  **/
4548 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4549 {
4550         struct i40e_hw *hw = &pf->hw;
4551         u8 i, enabled_tc;
4552         u8 num_tc = 0;
4553         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4554
4555         /* If DCB is not enabled then always in single TC */
4556         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4557                 return 1;
4558
4559         /* SFP mode will be enabled for all TCs on port */
4560         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4561                 return i40e_dcb_get_num_tc(dcbcfg);
4562
4563         /* MFP mode return count of enabled TCs for this PF */
4564         if (pf->hw.func_caps.iscsi)
4565                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4566         else
4567                 return 1; /* Only TC0 */
4568
4569         /* At least have TC0 */
4570         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4571         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4572                 if (enabled_tc & BIT(i))
4573                         num_tc++;
4574         }
4575         return num_tc;
4576 }
4577
4578 /**
4579  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4580  * @pf: PF being queried
4581  *
4582  * Return a bitmap for first enabled traffic class for this PF.
4583  **/
4584 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4585 {
4586         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4587         u8 i = 0;
4588
4589         if (!enabled_tc)
4590                 return 0x1; /* TC0 */
4591
4592         /* Find the first enabled TC */
4593         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4594                 if (enabled_tc & BIT(i))
4595                         break;
4596         }
4597
4598         return BIT(i);
4599 }
4600
4601 /**
4602  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4603  * @pf: PF being queried
4604  *
4605  * Return a bitmap for enabled traffic classes for this PF.
4606  **/
4607 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4608 {
4609         /* If DCB is not enabled for this PF then just return default TC */
4610         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4611                 return i40e_pf_get_default_tc(pf);
4612
4613         /* SFP mode we want PF to be enabled for all TCs */
4614         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4615                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4616
4617         /* MFP enabled and iSCSI PF type */
4618         if (pf->hw.func_caps.iscsi)
4619                 return i40e_get_iscsi_tc_map(pf);
4620         else
4621                 return i40e_pf_get_default_tc(pf);
4622 }
4623
4624 /**
4625  * i40e_vsi_get_bw_info - Query VSI BW Information
4626  * @vsi: the VSI being queried
4627  *
4628  * Returns 0 on success, negative value on failure
4629  **/
4630 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4631 {
4632         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4633         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4634         struct i40e_pf *pf = vsi->back;
4635         struct i40e_hw *hw = &pf->hw;
4636         i40e_status ret;
4637         u32 tc_bw_max;
4638         int i;
4639
4640         /* Get the VSI level BW configuration */
4641         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4642         if (ret) {
4643                 dev_info(&pf->pdev->dev,
4644                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4645                          i40e_stat_str(&pf->hw, ret),
4646                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4647                 return -EINVAL;
4648         }
4649
4650         /* Get the VSI level BW configuration per TC */
4651         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4652                                                NULL);
4653         if (ret) {
4654                 dev_info(&pf->pdev->dev,
4655                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4656                          i40e_stat_str(&pf->hw, ret),
4657                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4658                 return -EINVAL;
4659         }
4660
4661         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4662                 dev_info(&pf->pdev->dev,
4663                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4664                          bw_config.tc_valid_bits,
4665                          bw_ets_config.tc_valid_bits);
4666                 /* Still continuing */
4667         }
4668
4669         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4670         vsi->bw_max_quanta = bw_config.max_bw;
4671         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4672                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4673         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4674                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4675                 vsi->bw_ets_limit_credits[i] =
4676                                         le16_to_cpu(bw_ets_config.credits[i]);
4677                 /* 3 bits out of 4 for each TC */
4678                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4679         }
4680
4681         return 0;
4682 }
4683
4684 /**
4685  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4686  * @vsi: the VSI being configured
4687  * @enabled_tc: TC bitmap
4688  * @bw_credits: BW shared credits per TC
4689  *
4690  * Returns 0 on success, negative value on failure
4691  **/
4692 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4693                                        u8 *bw_share)
4694 {
4695         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4696         i40e_status ret;
4697         int i;
4698
4699         bw_data.tc_valid_bits = enabled_tc;
4700         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4701                 bw_data.tc_bw_credits[i] = bw_share[i];
4702
4703         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4704                                        NULL);
4705         if (ret) {
4706                 dev_info(&vsi->back->pdev->dev,
4707                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4708                          vsi->back->hw.aq.asq_last_status);
4709                 return -EINVAL;
4710         }
4711
4712         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4713                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4714
4715         return 0;
4716 }
4717
4718 /**
4719  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4720  * @vsi: the VSI being configured
4721  * @enabled_tc: TC map to be enabled
4722  *
4723  **/
4724 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4725 {
4726         struct net_device *netdev = vsi->netdev;
4727         struct i40e_pf *pf = vsi->back;
4728         struct i40e_hw *hw = &pf->hw;
4729         u8 netdev_tc = 0;
4730         int i;
4731         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4732
4733         if (!netdev)
4734                 return;
4735
4736         if (!enabled_tc) {
4737                 netdev_reset_tc(netdev);
4738                 return;
4739         }
4740
4741         /* Set up actual enabled TCs on the VSI */
4742         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4743                 return;
4744
4745         /* set per TC queues for the VSI */
4746         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4747                 /* Only set TC queues for enabled tcs
4748                  *
4749                  * e.g. For a VSI that has TC0 and TC3 enabled the
4750                  * enabled_tc bitmap would be 0x00001001; the driver
4751                  * will set the numtc for netdev as 2 that will be
4752                  * referenced by the netdev layer as TC 0 and 1.
4753                  */
4754                 if (vsi->tc_config.enabled_tc & BIT(i))
4755                         netdev_set_tc_queue(netdev,
4756                                         vsi->tc_config.tc_info[i].netdev_tc,
4757                                         vsi->tc_config.tc_info[i].qcount,
4758                                         vsi->tc_config.tc_info[i].qoffset);
4759         }
4760
4761         /* Assign UP2TC map for the VSI */
4762         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4763                 /* Get the actual TC# for the UP */
4764                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4765                 /* Get the mapped netdev TC# for the UP */
4766                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4767                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4768         }
4769 }
4770
4771 /**
4772  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4773  * @vsi: the VSI being configured
4774  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4775  **/
4776 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4777                                       struct i40e_vsi_context *ctxt)
4778 {
4779         /* copy just the sections touched not the entire info
4780          * since not all sections are valid as returned by
4781          * update vsi params
4782          */
4783         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4784         memcpy(&vsi->info.queue_mapping,
4785                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4786         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4787                sizeof(vsi->info.tc_mapping));
4788 }
4789
4790 /**
4791  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4792  * @vsi: VSI to be configured
4793  * @enabled_tc: TC bitmap
4794  *
4795  * This configures a particular VSI for TCs that are mapped to the
4796  * given TC bitmap. It uses default bandwidth share for TCs across
4797  * VSIs to configure TC for a particular VSI.
4798  *
4799  * NOTE:
4800  * It is expected that the VSI queues have been quisced before calling
4801  * this function.
4802  **/
4803 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4804 {
4805         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4806         struct i40e_vsi_context ctxt;
4807         int ret = 0;
4808         int i;
4809
4810         /* Check if enabled_tc is same as existing or new TCs */
4811         if (vsi->tc_config.enabled_tc == enabled_tc)
4812                 return ret;
4813
4814         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4815         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4816                 if (enabled_tc & BIT(i))
4817                         bw_share[i] = 1;
4818         }
4819
4820         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4821         if (ret) {
4822                 dev_info(&vsi->back->pdev->dev,
4823                          "Failed configuring TC map %d for VSI %d\n",
4824                          enabled_tc, vsi->seid);
4825                 goto out;
4826         }
4827
4828         /* Update Queue Pairs Mapping for currently enabled UPs */
4829         ctxt.seid = vsi->seid;
4830         ctxt.pf_num = vsi->back->hw.pf_id;
4831         ctxt.vf_num = 0;
4832         ctxt.uplink_seid = vsi->uplink_seid;
4833         ctxt.info = vsi->info;
4834         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4835
4836         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4837                 ctxt.info.valid_sections |=
4838                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4839                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4840         }
4841
4842         /* Update the VSI after updating the VSI queue-mapping information */
4843         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4844         if (ret) {
4845                 dev_info(&vsi->back->pdev->dev,
4846                          "Update vsi tc config failed, err %s aq_err %s\n",
4847                          i40e_stat_str(&vsi->back->hw, ret),
4848                          i40e_aq_str(&vsi->back->hw,
4849                                      vsi->back->hw.aq.asq_last_status));
4850                 goto out;
4851         }
4852         /* update the local VSI info with updated queue map */
4853         i40e_vsi_update_queue_map(vsi, &ctxt);
4854         vsi->info.valid_sections = 0;
4855
4856         /* Update current VSI BW information */
4857         ret = i40e_vsi_get_bw_info(vsi);
4858         if (ret) {
4859                 dev_info(&vsi->back->pdev->dev,
4860                          "Failed updating vsi bw info, err %s aq_err %s\n",
4861                          i40e_stat_str(&vsi->back->hw, ret),
4862                          i40e_aq_str(&vsi->back->hw,
4863                                      vsi->back->hw.aq.asq_last_status));
4864                 goto out;
4865         }
4866
4867         /* Update the netdev TC setup */
4868         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4869 out:
4870         return ret;
4871 }
4872
4873 /**
4874  * i40e_veb_config_tc - Configure TCs for given VEB
4875  * @veb: given VEB
4876  * @enabled_tc: TC bitmap
4877  *
4878  * Configures given TC bitmap for VEB (switching) element
4879  **/
4880 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4881 {
4882         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4883         struct i40e_pf *pf = veb->pf;
4884         int ret = 0;
4885         int i;
4886
4887         /* No TCs or already enabled TCs just return */
4888         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4889                 return ret;
4890
4891         bw_data.tc_valid_bits = enabled_tc;
4892         /* bw_data.absolute_credits is not set (relative) */
4893
4894         /* Enable ETS TCs with equal BW Share for now */
4895         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4896                 if (enabled_tc & BIT(i))
4897                         bw_data.tc_bw_share_credits[i] = 1;
4898         }
4899
4900         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4901                                                    &bw_data, NULL);
4902         if (ret) {
4903                 dev_info(&pf->pdev->dev,
4904                          "VEB bw config failed, err %s aq_err %s\n",
4905                          i40e_stat_str(&pf->hw, ret),
4906                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4907                 goto out;
4908         }
4909
4910         /* Update the BW information */
4911         ret = i40e_veb_get_bw_info(veb);
4912         if (ret) {
4913                 dev_info(&pf->pdev->dev,
4914                          "Failed getting veb bw config, err %s aq_err %s\n",
4915                          i40e_stat_str(&pf->hw, ret),
4916                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4917         }
4918
4919 out:
4920         return ret;
4921 }
4922
4923 #ifdef CONFIG_I40E_DCB
4924 /**
4925  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4926  * @pf: PF struct
4927  *
4928  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4929  * the caller would've quiesce all the VSIs before calling
4930  * this function
4931  **/
4932 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4933 {
4934         u8 tc_map = 0;
4935         int ret;
4936         u8 v;
4937
4938         /* Enable the TCs available on PF to all VEBs */
4939         tc_map = i40e_pf_get_tc_map(pf);
4940         for (v = 0; v < I40E_MAX_VEB; v++) {
4941                 if (!pf->veb[v])
4942                         continue;
4943                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4944                 if (ret) {
4945                         dev_info(&pf->pdev->dev,
4946                                  "Failed configuring TC for VEB seid=%d\n",
4947                                  pf->veb[v]->seid);
4948                         /* Will try to configure as many components */
4949                 }
4950         }
4951
4952         /* Update each VSI */
4953         for (v = 0; v < pf->num_alloc_vsi; v++) {
4954                 if (!pf->vsi[v])
4955                         continue;
4956
4957                 /* - Enable all TCs for the LAN VSI
4958 #ifdef I40E_FCOE
4959                  * - For FCoE VSI only enable the TC configured
4960                  *   as per the APP TLV
4961 #endif
4962                  * - For all others keep them at TC0 for now
4963                  */
4964                 if (v == pf->lan_vsi)
4965                         tc_map = i40e_pf_get_tc_map(pf);
4966                 else
4967                         tc_map = i40e_pf_get_default_tc(pf);
4968 #ifdef I40E_FCOE
4969                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4970                         tc_map = i40e_get_fcoe_tc_map(pf);
4971 #endif /* #ifdef I40E_FCOE */
4972
4973                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4974                 if (ret) {
4975                         dev_info(&pf->pdev->dev,
4976                                  "Failed configuring TC for VSI seid=%d\n",
4977                                  pf->vsi[v]->seid);
4978                         /* Will try to configure as many components */
4979                 } else {
4980                         /* Re-configure VSI vectors based on updated TC map */
4981                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4982                         if (pf->vsi[v]->netdev)
4983                                 i40e_dcbnl_set_all(pf->vsi[v]);
4984                 }
4985         }
4986 }
4987
4988 /**
4989  * i40e_resume_port_tx - Resume port Tx
4990  * @pf: PF struct
4991  *
4992  * Resume a port's Tx and issue a PF reset in case of failure to
4993  * resume.
4994  **/
4995 static int i40e_resume_port_tx(struct i40e_pf *pf)
4996 {
4997         struct i40e_hw *hw = &pf->hw;
4998         int ret;
4999
5000         ret = i40e_aq_resume_port_tx(hw, NULL);
5001         if (ret) {
5002                 dev_info(&pf->pdev->dev,
5003                          "Resume Port Tx failed, err %s aq_err %s\n",
5004                           i40e_stat_str(&pf->hw, ret),
5005                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5006                 /* Schedule PF reset to recover */
5007                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5008                 i40e_service_event_schedule(pf);
5009         }
5010
5011         return ret;
5012 }
5013
5014 /**
5015  * i40e_init_pf_dcb - Initialize DCB configuration
5016  * @pf: PF being configured
5017  *
5018  * Query the current DCB configuration and cache it
5019  * in the hardware structure
5020  **/
5021 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5022 {
5023         struct i40e_hw *hw = &pf->hw;
5024         int err = 0;
5025
5026         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5027         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5028                 goto out;
5029
5030         /* Get the initial DCB configuration */
5031         err = i40e_init_dcb(hw);
5032         if (!err) {
5033                 /* Device/Function is not DCBX capable */
5034                 if ((!hw->func_caps.dcb) ||
5035                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5036                         dev_info(&pf->pdev->dev,
5037                                  "DCBX offload is not supported or is disabled for this PF.\n");
5038
5039                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5040                                 goto out;
5041
5042                 } else {
5043                         /* When status is not DISABLED then DCBX in FW */
5044                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5045                                        DCB_CAP_DCBX_VER_IEEE;
5046
5047                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5048                         /* Enable DCB tagging only when more than one TC */
5049                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5050                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5051                         dev_dbg(&pf->pdev->dev,
5052                                 "DCBX offload is supported for this PF.\n");
5053                 }
5054         } else {
5055                 dev_info(&pf->pdev->dev,
5056                          "Query for DCB configuration failed, err %s aq_err %s\n",
5057                          i40e_stat_str(&pf->hw, err),
5058                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5059         }
5060
5061 out:
5062         return err;
5063 }
5064 #endif /* CONFIG_I40E_DCB */
5065 #define SPEED_SIZE 14
5066 #define FC_SIZE 8
5067 /**
5068  * i40e_print_link_message - print link up or down
5069  * @vsi: the VSI for which link needs a message
5070  */
5071 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5072 {
5073         char *speed = "Unknown";
5074         char *fc = "Unknown";
5075
5076         if (vsi->current_isup == isup)
5077                 return;
5078         vsi->current_isup = isup;
5079         if (!isup) {
5080                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5081                 return;
5082         }
5083
5084         /* Warn user if link speed on NPAR enabled partition is not at
5085          * least 10GB
5086          */
5087         if (vsi->back->hw.func_caps.npar_enable &&
5088             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5089              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5090                 netdev_warn(vsi->netdev,
5091                             "The partition detected link speed that is less than 10Gbps\n");
5092
5093         switch (vsi->back->hw.phy.link_info.link_speed) {
5094         case I40E_LINK_SPEED_40GB:
5095                 speed = "40 G";
5096                 break;
5097         case I40E_LINK_SPEED_20GB:
5098                 speed = "20 G";
5099                 break;
5100         case I40E_LINK_SPEED_10GB:
5101                 speed = "10 G";
5102                 break;
5103         case I40E_LINK_SPEED_1GB:
5104                 speed = "1000 M";
5105                 break;
5106         case I40E_LINK_SPEED_100MB:
5107                 speed = "100 M";
5108                 break;
5109         default:
5110                 break;
5111         }
5112
5113         switch (vsi->back->hw.fc.current_mode) {
5114         case I40E_FC_FULL:
5115                 fc = "RX/TX";
5116                 break;
5117         case I40E_FC_TX_PAUSE:
5118                 fc = "TX";
5119                 break;
5120         case I40E_FC_RX_PAUSE:
5121                 fc = "RX";
5122                 break;
5123         default:
5124                 fc = "None";
5125                 break;
5126         }
5127
5128         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5129                     speed, fc);
5130 }
5131
5132 /**
5133  * i40e_up_complete - Finish the last steps of bringing up a connection
5134  * @vsi: the VSI being configured
5135  **/
5136 static int i40e_up_complete(struct i40e_vsi *vsi)
5137 {
5138         struct i40e_pf *pf = vsi->back;
5139         int err;
5140
5141         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5142                 i40e_vsi_configure_msix(vsi);
5143         else
5144                 i40e_configure_msi_and_legacy(vsi);
5145
5146         /* start rings */
5147         err = i40e_vsi_control_rings(vsi, true);
5148         if (err)
5149                 return err;
5150
5151         clear_bit(__I40E_DOWN, &vsi->state);
5152         i40e_napi_enable_all(vsi);
5153         i40e_vsi_enable_irq(vsi);
5154
5155         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5156             (vsi->netdev)) {
5157                 i40e_print_link_message(vsi, true);
5158                 netif_tx_start_all_queues(vsi->netdev);
5159                 netif_carrier_on(vsi->netdev);
5160         } else if (vsi->netdev) {
5161                 i40e_print_link_message(vsi, false);
5162                 /* need to check for qualified module here*/
5163                 if ((pf->hw.phy.link_info.link_info &
5164                         I40E_AQ_MEDIA_AVAILABLE) &&
5165                     (!(pf->hw.phy.link_info.an_info &
5166                         I40E_AQ_QUALIFIED_MODULE)))
5167                         netdev_err(vsi->netdev,
5168                                    "the driver failed to link because an unqualified module was detected.");
5169         }
5170
5171         /* replay FDIR SB filters */
5172         if (vsi->type == I40E_VSI_FDIR) {
5173                 /* reset fd counters */
5174                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5175                 if (pf->fd_tcp_rule > 0) {
5176                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5177                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5178                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5179                         pf->fd_tcp_rule = 0;
5180                 }
5181                 i40e_fdir_filter_restore(vsi);
5182         }
5183
5184         /* On the next run of the service_task, notify any clients of the new
5185          * opened netdev
5186          */
5187         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5188         i40e_service_event_schedule(pf);
5189
5190         return 0;
5191 }
5192
5193 /**
5194  * i40e_vsi_reinit_locked - Reset the VSI
5195  * @vsi: the VSI being configured
5196  *
5197  * Rebuild the ring structs after some configuration
5198  * has changed, e.g. MTU size.
5199  **/
5200 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5201 {
5202         struct i40e_pf *pf = vsi->back;
5203
5204         WARN_ON(in_interrupt());
5205         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5206                 usleep_range(1000, 2000);
5207         i40e_down(vsi);
5208
5209         i40e_up(vsi);
5210         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5211 }
5212
5213 /**
5214  * i40e_up - Bring the connection back up after being down
5215  * @vsi: the VSI being configured
5216  **/
5217 int i40e_up(struct i40e_vsi *vsi)
5218 {
5219         int err;
5220
5221         err = i40e_vsi_configure(vsi);
5222         if (!err)
5223                 err = i40e_up_complete(vsi);
5224
5225         return err;
5226 }
5227
5228 /**
5229  * i40e_down - Shutdown the connection processing
5230  * @vsi: the VSI being stopped
5231  **/
5232 void i40e_down(struct i40e_vsi *vsi)
5233 {
5234         int i;
5235
5236         /* It is assumed that the caller of this function
5237          * sets the vsi->state __I40E_DOWN bit.
5238          */
5239         if (vsi->netdev) {
5240                 netif_carrier_off(vsi->netdev);
5241                 netif_tx_disable(vsi->netdev);
5242         }
5243         i40e_vsi_disable_irq(vsi);
5244         i40e_vsi_control_rings(vsi, false);
5245         i40e_napi_disable_all(vsi);
5246
5247         for (i = 0; i < vsi->num_queue_pairs; i++) {
5248                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5249                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5250         }
5251
5252         i40e_notify_client_of_netdev_close(vsi, false);
5253
5254 }
5255
5256 /**
5257  * i40e_setup_tc - configure multiple traffic classes
5258  * @netdev: net device to configure
5259  * @tc: number of traffic classes to enable
5260  **/
5261 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5262 {
5263         struct i40e_netdev_priv *np = netdev_priv(netdev);
5264         struct i40e_vsi *vsi = np->vsi;
5265         struct i40e_pf *pf = vsi->back;
5266         u8 enabled_tc = 0;
5267         int ret = -EINVAL;
5268         int i;
5269
5270         /* Check if DCB enabled to continue */
5271         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5272                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5273                 goto exit;
5274         }
5275
5276         /* Check if MFP enabled */
5277         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5278                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5279                 goto exit;
5280         }
5281
5282         /* Check whether tc count is within enabled limit */
5283         if (tc > i40e_pf_get_num_tc(pf)) {
5284                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5285                 goto exit;
5286         }
5287
5288         /* Generate TC map for number of tc requested */
5289         for (i = 0; i < tc; i++)
5290                 enabled_tc |= BIT(i);
5291
5292         /* Requesting same TC configuration as already enabled */
5293         if (enabled_tc == vsi->tc_config.enabled_tc)
5294                 return 0;
5295
5296         /* Quiesce VSI queues */
5297         i40e_quiesce_vsi(vsi);
5298
5299         /* Configure VSI for enabled TCs */
5300         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5301         if (ret) {
5302                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5303                             vsi->seid);
5304                 goto exit;
5305         }
5306
5307         /* Unquiesce VSI */
5308         i40e_unquiesce_vsi(vsi);
5309
5310 exit:
5311         return ret;
5312 }
5313
5314 #ifdef I40E_FCOE
5315 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5316                     struct tc_to_netdev *tc)
5317 #else
5318 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5319                            struct tc_to_netdev *tc)
5320 #endif
5321 {
5322         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5323                 return -EINVAL;
5324         return i40e_setup_tc(netdev, tc->tc);
5325 }
5326
5327 /**
5328  * i40e_open - Called when a network interface is made active
5329  * @netdev: network interface device structure
5330  *
5331  * The open entry point is called when a network interface is made
5332  * active by the system (IFF_UP).  At this point all resources needed
5333  * for transmit and receive operations are allocated, the interrupt
5334  * handler is registered with the OS, the netdev watchdog subtask is
5335  * enabled, and the stack is notified that the interface is ready.
5336  *
5337  * Returns 0 on success, negative value on failure
5338  **/
5339 int i40e_open(struct net_device *netdev)
5340 {
5341         struct i40e_netdev_priv *np = netdev_priv(netdev);
5342         struct i40e_vsi *vsi = np->vsi;
5343         struct i40e_pf *pf = vsi->back;
5344         int err;
5345
5346         /* disallow open during test or if eeprom is broken */
5347         if (test_bit(__I40E_TESTING, &pf->state) ||
5348             test_bit(__I40E_BAD_EEPROM, &pf->state))
5349                 return -EBUSY;
5350
5351         netif_carrier_off(netdev);
5352
5353         err = i40e_vsi_open(vsi);
5354         if (err)
5355                 return err;
5356
5357         /* configure global TSO hardware offload settings */
5358         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5359                                                        TCP_FLAG_FIN) >> 16);
5360         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5361                                                        TCP_FLAG_FIN |
5362                                                        TCP_FLAG_CWR) >> 16);
5363         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5364
5365         udp_tunnel_get_rx_info(netdev);
5366         i40e_notify_client_of_netdev_open(vsi);
5367
5368         return 0;
5369 }
5370
5371 /**
5372  * i40e_vsi_open -
5373  * @vsi: the VSI to open
5374  *
5375  * Finish initialization of the VSI.
5376  *
5377  * Returns 0 on success, negative value on failure
5378  **/
5379 int i40e_vsi_open(struct i40e_vsi *vsi)
5380 {
5381         struct i40e_pf *pf = vsi->back;
5382         char int_name[I40E_INT_NAME_STR_LEN];
5383         int err;
5384
5385         /* allocate descriptors */
5386         err = i40e_vsi_setup_tx_resources(vsi);
5387         if (err)
5388                 goto err_setup_tx;
5389         err = i40e_vsi_setup_rx_resources(vsi);
5390         if (err)
5391                 goto err_setup_rx;
5392
5393         err = i40e_vsi_configure(vsi);
5394         if (err)
5395                 goto err_setup_rx;
5396
5397         if (vsi->netdev) {
5398                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5399                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5400                 err = i40e_vsi_request_irq(vsi, int_name);
5401                 if (err)
5402                         goto err_setup_rx;
5403
5404                 /* Notify the stack of the actual queue counts. */
5405                 err = netif_set_real_num_tx_queues(vsi->netdev,
5406                                                    vsi->num_queue_pairs);
5407                 if (err)
5408                         goto err_set_queues;
5409
5410                 err = netif_set_real_num_rx_queues(vsi->netdev,
5411                                                    vsi->num_queue_pairs);
5412                 if (err)
5413                         goto err_set_queues;
5414
5415         } else if (vsi->type == I40E_VSI_FDIR) {
5416                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5417                          dev_driver_string(&pf->pdev->dev),
5418                          dev_name(&pf->pdev->dev));
5419                 err = i40e_vsi_request_irq(vsi, int_name);
5420
5421         } else {
5422                 err = -EINVAL;
5423                 goto err_setup_rx;
5424         }
5425
5426         err = i40e_up_complete(vsi);
5427         if (err)
5428                 goto err_up_complete;
5429
5430         return 0;
5431
5432 err_up_complete:
5433         i40e_down(vsi);
5434 err_set_queues:
5435         i40e_vsi_free_irq(vsi);
5436 err_setup_rx:
5437         i40e_vsi_free_rx_resources(vsi);
5438 err_setup_tx:
5439         i40e_vsi_free_tx_resources(vsi);
5440         if (vsi == pf->vsi[pf->lan_vsi])
5441                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5442
5443         return err;
5444 }
5445
5446 /**
5447  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5448  * @pf: Pointer to PF
5449  *
5450  * This function destroys the hlist where all the Flow Director
5451  * filters were saved.
5452  **/
5453 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5454 {
5455         struct i40e_fdir_filter *filter;
5456         struct hlist_node *node2;
5457
5458         hlist_for_each_entry_safe(filter, node2,
5459                                   &pf->fdir_filter_list, fdir_node) {
5460                 hlist_del(&filter->fdir_node);
5461                 kfree(filter);
5462         }
5463         pf->fdir_pf_active_filters = 0;
5464 }
5465
5466 /**
5467  * i40e_close - Disables a network interface
5468  * @netdev: network interface device structure
5469  *
5470  * The close entry point is called when an interface is de-activated
5471  * by the OS.  The hardware is still under the driver's control, but
5472  * this netdev interface is disabled.
5473  *
5474  * Returns 0, this is not allowed to fail
5475  **/
5476 int i40e_close(struct net_device *netdev)
5477 {
5478         struct i40e_netdev_priv *np = netdev_priv(netdev);
5479         struct i40e_vsi *vsi = np->vsi;
5480
5481         i40e_vsi_close(vsi);
5482
5483         return 0;
5484 }
5485
5486 /**
5487  * i40e_do_reset - Start a PF or Core Reset sequence
5488  * @pf: board private structure
5489  * @reset_flags: which reset is requested
5490  *
5491  * The essential difference in resets is that the PF Reset
5492  * doesn't clear the packet buffers, doesn't reset the PE
5493  * firmware, and doesn't bother the other PFs on the chip.
5494  **/
5495 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5496 {
5497         u32 val;
5498
5499         WARN_ON(in_interrupt());
5500
5501
5502         /* do the biggest reset indicated */
5503         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5504
5505                 /* Request a Global Reset
5506                  *
5507                  * This will start the chip's countdown to the actual full
5508                  * chip reset event, and a warning interrupt to be sent
5509                  * to all PFs, including the requestor.  Our handler
5510                  * for the warning interrupt will deal with the shutdown
5511                  * and recovery of the switch setup.
5512                  */
5513                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5514                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5515                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5516                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5517
5518         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5519
5520                 /* Request a Core Reset
5521                  *
5522                  * Same as Global Reset, except does *not* include the MAC/PHY
5523                  */
5524                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5525                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5526                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5527                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5528                 i40e_flush(&pf->hw);
5529
5530         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5531
5532                 /* Request a PF Reset
5533                  *
5534                  * Resets only the PF-specific registers
5535                  *
5536                  * This goes directly to the tear-down and rebuild of
5537                  * the switch, since we need to do all the recovery as
5538                  * for the Core Reset.
5539                  */
5540                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5541                 i40e_handle_reset_warning(pf);
5542
5543         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5544                 int v;
5545
5546                 /* Find the VSI(s) that requested a re-init */
5547                 dev_info(&pf->pdev->dev,
5548                          "VSI reinit requested\n");
5549                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5550                         struct i40e_vsi *vsi = pf->vsi[v];
5551
5552                         if (vsi != NULL &&
5553                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5554                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5555                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5556                         }
5557                 }
5558         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5559                 int v;
5560
5561                 /* Find the VSI(s) that needs to be brought down */
5562                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5563                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5564                         struct i40e_vsi *vsi = pf->vsi[v];
5565
5566                         if (vsi != NULL &&
5567                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5568                                 set_bit(__I40E_DOWN, &vsi->state);
5569                                 i40e_down(vsi);
5570                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5571                         }
5572                 }
5573         } else {
5574                 dev_info(&pf->pdev->dev,
5575                          "bad reset request 0x%08x\n", reset_flags);
5576         }
5577 }
5578
5579 #ifdef CONFIG_I40E_DCB
5580 /**
5581  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5582  * @pf: board private structure
5583  * @old_cfg: current DCB config
5584  * @new_cfg: new DCB config
5585  **/
5586 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5587                             struct i40e_dcbx_config *old_cfg,
5588                             struct i40e_dcbx_config *new_cfg)
5589 {
5590         bool need_reconfig = false;
5591
5592         /* Check if ETS configuration has changed */
5593         if (memcmp(&new_cfg->etscfg,
5594                    &old_cfg->etscfg,
5595                    sizeof(new_cfg->etscfg))) {
5596                 /* If Priority Table has changed reconfig is needed */
5597                 if (memcmp(&new_cfg->etscfg.prioritytable,
5598                            &old_cfg->etscfg.prioritytable,
5599                            sizeof(new_cfg->etscfg.prioritytable))) {
5600                         need_reconfig = true;
5601                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5602                 }
5603
5604                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5605                            &old_cfg->etscfg.tcbwtable,
5606                            sizeof(new_cfg->etscfg.tcbwtable)))
5607                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5608
5609                 if (memcmp(&new_cfg->etscfg.tsatable,
5610                            &old_cfg->etscfg.tsatable,
5611                            sizeof(new_cfg->etscfg.tsatable)))
5612                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5613         }
5614
5615         /* Check if PFC configuration has changed */
5616         if (memcmp(&new_cfg->pfc,
5617                    &old_cfg->pfc,
5618                    sizeof(new_cfg->pfc))) {
5619                 need_reconfig = true;
5620                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5621         }
5622
5623         /* Check if APP Table has changed */
5624         if (memcmp(&new_cfg->app,
5625                    &old_cfg->app,
5626                    sizeof(new_cfg->app))) {
5627                 need_reconfig = true;
5628                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5629         }
5630
5631         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5632         return need_reconfig;
5633 }
5634
5635 /**
5636  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5637  * @pf: board private structure
5638  * @e: event info posted on ARQ
5639  **/
5640 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5641                                   struct i40e_arq_event_info *e)
5642 {
5643         struct i40e_aqc_lldp_get_mib *mib =
5644                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5645         struct i40e_hw *hw = &pf->hw;
5646         struct i40e_dcbx_config tmp_dcbx_cfg;
5647         bool need_reconfig = false;
5648         int ret = 0;
5649         u8 type;
5650
5651         /* Not DCB capable or capability disabled */
5652         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5653                 return ret;
5654
5655         /* Ignore if event is not for Nearest Bridge */
5656         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5657                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5658         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5659         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5660                 return ret;
5661
5662         /* Check MIB Type and return if event for Remote MIB update */
5663         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5664         dev_dbg(&pf->pdev->dev,
5665                 "LLDP event mib type %s\n", type ? "remote" : "local");
5666         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5667                 /* Update the remote cached instance and return */
5668                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5669                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5670                                 &hw->remote_dcbx_config);
5671                 goto exit;
5672         }
5673
5674         /* Store the old configuration */
5675         tmp_dcbx_cfg = hw->local_dcbx_config;
5676
5677         /* Reset the old DCBx configuration data */
5678         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5679         /* Get updated DCBX data from firmware */
5680         ret = i40e_get_dcb_config(&pf->hw);
5681         if (ret) {
5682                 dev_info(&pf->pdev->dev,
5683                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5684                          i40e_stat_str(&pf->hw, ret),
5685                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5686                 goto exit;
5687         }
5688
5689         /* No change detected in DCBX configs */
5690         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5691                     sizeof(tmp_dcbx_cfg))) {
5692                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5693                 goto exit;
5694         }
5695
5696         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5697                                                &hw->local_dcbx_config);
5698
5699         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5700
5701         if (!need_reconfig)
5702                 goto exit;
5703
5704         /* Enable DCB tagging only when more than one TC */
5705         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5706                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5707         else
5708                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5709
5710         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5711         /* Reconfiguration needed quiesce all VSIs */
5712         i40e_pf_quiesce_all_vsi(pf);
5713
5714         /* Changes in configuration update VEB/VSI */
5715         i40e_dcb_reconfigure(pf);
5716
5717         ret = i40e_resume_port_tx(pf);
5718
5719         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5720         /* In case of error no point in resuming VSIs */
5721         if (ret)
5722                 goto exit;
5723
5724         /* Wait for the PF's queues to be disabled */
5725         ret = i40e_pf_wait_queues_disabled(pf);
5726         if (ret) {
5727                 /* Schedule PF reset to recover */
5728                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5729                 i40e_service_event_schedule(pf);
5730         } else {
5731                 i40e_pf_unquiesce_all_vsi(pf);
5732                 /* Notify the client for the DCB changes */
5733                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5734         }
5735
5736 exit:
5737         return ret;
5738 }
5739 #endif /* CONFIG_I40E_DCB */
5740
5741 /**
5742  * i40e_do_reset_safe - Protected reset path for userland calls.
5743  * @pf: board private structure
5744  * @reset_flags: which reset is requested
5745  *
5746  **/
5747 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5748 {
5749         rtnl_lock();
5750         i40e_do_reset(pf, reset_flags);
5751         rtnl_unlock();
5752 }
5753
5754 /**
5755  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5756  * @pf: board private structure
5757  * @e: event info posted on ARQ
5758  *
5759  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5760  * and VF queues
5761  **/
5762 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5763                                            struct i40e_arq_event_info *e)
5764 {
5765         struct i40e_aqc_lan_overflow *data =
5766                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5767         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5768         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5769         struct i40e_hw *hw = &pf->hw;
5770         struct i40e_vf *vf;
5771         u16 vf_id;
5772
5773         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5774                 queue, qtx_ctl);
5775
5776         /* Queue belongs to VF, find the VF and issue VF reset */
5777         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5778             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5779                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5780                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5781                 vf_id -= hw->func_caps.vf_base_id;
5782                 vf = &pf->vf[vf_id];
5783                 i40e_vc_notify_vf_reset(vf);
5784                 /* Allow VF to process pending reset notification */
5785                 msleep(20);
5786                 i40e_reset_vf(vf, false);
5787         }
5788 }
5789
5790 /**
5791  * i40e_service_event_complete - Finish up the service event
5792  * @pf: board private structure
5793  **/
5794 static void i40e_service_event_complete(struct i40e_pf *pf)
5795 {
5796         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5797
5798         /* flush memory to make sure state is correct before next watchog */
5799         smp_mb__before_atomic();
5800         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5801 }
5802
5803 /**
5804  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5805  * @pf: board private structure
5806  **/
5807 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5808 {
5809         u32 val, fcnt_prog;
5810
5811         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5812         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5813         return fcnt_prog;
5814 }
5815
5816 /**
5817  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5818  * @pf: board private structure
5819  **/
5820 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5821 {
5822         u32 val, fcnt_prog;
5823
5824         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5825         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5826                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5827                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5828         return fcnt_prog;
5829 }
5830
5831 /**
5832  * i40e_get_global_fd_count - Get total FD filters programmed on device
5833  * @pf: board private structure
5834  **/
5835 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5836 {
5837         u32 val, fcnt_prog;
5838
5839         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5840         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5841                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5842                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5843         return fcnt_prog;
5844 }
5845
5846 /**
5847  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5848  * @pf: board private structure
5849  **/
5850 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5851 {
5852         struct i40e_fdir_filter *filter;
5853         u32 fcnt_prog, fcnt_avail;
5854         struct hlist_node *node;
5855
5856         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5857                 return;
5858
5859         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5860          * to re-enable
5861          */
5862         fcnt_prog = i40e_get_global_fd_count(pf);
5863         fcnt_avail = pf->fdir_pf_filter_count;
5864         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5865             (pf->fd_add_err == 0) ||
5866             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5867                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5868                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5869                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5870                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5871                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5872                 }
5873         }
5874         /* Wait for some more space to be available to turn on ATR */
5875         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5876                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5877                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5878                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5879                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5880                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5881                 }
5882         }
5883
5884         /* if hw had a problem adding a filter, delete it */
5885         if (pf->fd_inv > 0) {
5886                 hlist_for_each_entry_safe(filter, node,
5887                                           &pf->fdir_filter_list, fdir_node) {
5888                         if (filter->fd_id == pf->fd_inv) {
5889                                 hlist_del(&filter->fdir_node);
5890                                 kfree(filter);
5891                                 pf->fdir_pf_active_filters--;
5892                         }
5893                 }
5894         }
5895 }
5896
5897 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5898 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5899 /**
5900  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5901  * @pf: board private structure
5902  **/
5903 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5904 {
5905         unsigned long min_flush_time;
5906         int flush_wait_retry = 50;
5907         bool disable_atr = false;
5908         int fd_room;
5909         int reg;
5910
5911         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5912                 return;
5913
5914         if (!time_after(jiffies, pf->fd_flush_timestamp +
5915                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5916                 return;
5917
5918         /* If the flush is happening too quick and we have mostly SB rules we
5919          * should not re-enable ATR for some time.
5920          */
5921         min_flush_time = pf->fd_flush_timestamp +
5922                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5923         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5924
5925         if (!(time_after(jiffies, min_flush_time)) &&
5926             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5927                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5928                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5929                 disable_atr = true;
5930         }
5931
5932         pf->fd_flush_timestamp = jiffies;
5933         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5934         /* flush all filters */
5935         wr32(&pf->hw, I40E_PFQF_CTL_1,
5936              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5937         i40e_flush(&pf->hw);
5938         pf->fd_flush_cnt++;
5939         pf->fd_add_err = 0;
5940         do {
5941                 /* Check FD flush status every 5-6msec */
5942                 usleep_range(5000, 6000);
5943                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5944                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5945                         break;
5946         } while (flush_wait_retry--);
5947         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5948                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5949         } else {
5950                 /* replay sideband filters */
5951                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5952                 if (!disable_atr)
5953                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5954                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5955                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5956                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5957         }
5958 }
5959
5960 /**
5961  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5962  * @pf: board private structure
5963  **/
5964 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5965 {
5966         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5967 }
5968
5969 /* We can see up to 256 filter programming desc in transit if the filters are
5970  * being applied really fast; before we see the first
5971  * filter miss error on Rx queue 0. Accumulating enough error messages before
5972  * reacting will make sure we don't cause flush too often.
5973  */
5974 #define I40E_MAX_FD_PROGRAM_ERROR 256
5975
5976 /**
5977  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5978  * @pf: board private structure
5979  **/
5980 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5981 {
5982
5983         /* if interface is down do nothing */
5984         if (test_bit(__I40E_DOWN, &pf->state))
5985                 return;
5986
5987         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5988                 return;
5989
5990         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5991                 i40e_fdir_flush_and_replay(pf);
5992
5993         i40e_fdir_check_and_reenable(pf);
5994
5995 }
5996
5997 /**
5998  * i40e_vsi_link_event - notify VSI of a link event
5999  * @vsi: vsi to be notified
6000  * @link_up: link up or down
6001  **/
6002 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6003 {
6004         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6005                 return;
6006
6007         switch (vsi->type) {
6008         case I40E_VSI_MAIN:
6009 #ifdef I40E_FCOE
6010         case I40E_VSI_FCOE:
6011 #endif
6012                 if (!vsi->netdev || !vsi->netdev_registered)
6013                         break;
6014
6015                 if (link_up) {
6016                         netif_carrier_on(vsi->netdev);
6017                         netif_tx_wake_all_queues(vsi->netdev);
6018                 } else {
6019                         netif_carrier_off(vsi->netdev);
6020                         netif_tx_stop_all_queues(vsi->netdev);
6021                 }
6022                 break;
6023
6024         case I40E_VSI_SRIOV:
6025         case I40E_VSI_VMDQ2:
6026         case I40E_VSI_CTRL:
6027         case I40E_VSI_IWARP:
6028         case I40E_VSI_MIRROR:
6029         default:
6030                 /* there is no notification for other VSIs */
6031                 break;
6032         }
6033 }
6034
6035 /**
6036  * i40e_veb_link_event - notify elements on the veb of a link event
6037  * @veb: veb to be notified
6038  * @link_up: link up or down
6039  **/
6040 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6041 {
6042         struct i40e_pf *pf;
6043         int i;
6044
6045         if (!veb || !veb->pf)
6046                 return;
6047         pf = veb->pf;
6048
6049         /* depth first... */
6050         for (i = 0; i < I40E_MAX_VEB; i++)
6051                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6052                         i40e_veb_link_event(pf->veb[i], link_up);
6053
6054         /* ... now the local VSIs */
6055         for (i = 0; i < pf->num_alloc_vsi; i++)
6056                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6057                         i40e_vsi_link_event(pf->vsi[i], link_up);
6058 }
6059
6060 /**
6061  * i40e_link_event - Update netif_carrier status
6062  * @pf: board private structure
6063  **/
6064 static void i40e_link_event(struct i40e_pf *pf)
6065 {
6066         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6067         u8 new_link_speed, old_link_speed;
6068         i40e_status status;
6069         bool new_link, old_link;
6070
6071         /* save off old link status information */
6072         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6073
6074         /* set this to force the get_link_status call to refresh state */
6075         pf->hw.phy.get_link_info = true;
6076
6077         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6078
6079         status = i40e_get_link_status(&pf->hw, &new_link);
6080         if (status) {
6081                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6082                         status);
6083                 return;
6084         }
6085
6086         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6087         new_link_speed = pf->hw.phy.link_info.link_speed;
6088
6089         if (new_link == old_link &&
6090             new_link_speed == old_link_speed &&
6091             (test_bit(__I40E_DOWN, &vsi->state) ||
6092              new_link == netif_carrier_ok(vsi->netdev)))
6093                 return;
6094
6095         if (!test_bit(__I40E_DOWN, &vsi->state))
6096                 i40e_print_link_message(vsi, new_link);
6097
6098         /* Notify the base of the switch tree connected to
6099          * the link.  Floating VEBs are not notified.
6100          */
6101         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6102                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6103         else
6104                 i40e_vsi_link_event(vsi, new_link);
6105
6106         if (pf->vf)
6107                 i40e_vc_notify_link_state(pf);
6108
6109         if (pf->flags & I40E_FLAG_PTP)
6110                 i40e_ptp_set_increment(pf);
6111 }
6112
6113 /**
6114  * i40e_watchdog_subtask - periodic checks not using event driven response
6115  * @pf: board private structure
6116  **/
6117 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6118 {
6119         int i;
6120
6121         /* if interface is down do nothing */
6122         if (test_bit(__I40E_DOWN, &pf->state) ||
6123             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6124                 return;
6125
6126         /* make sure we don't do these things too often */
6127         if (time_before(jiffies, (pf->service_timer_previous +
6128                                   pf->service_timer_period)))
6129                 return;
6130         pf->service_timer_previous = jiffies;
6131
6132         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6133                 i40e_link_event(pf);
6134
6135         /* Update the stats for active netdevs so the network stack
6136          * can look at updated numbers whenever it cares to
6137          */
6138         for (i = 0; i < pf->num_alloc_vsi; i++)
6139                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6140                         i40e_update_stats(pf->vsi[i]);
6141
6142         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6143                 /* Update the stats for the active switching components */
6144                 for (i = 0; i < I40E_MAX_VEB; i++)
6145                         if (pf->veb[i])
6146                                 i40e_update_veb_stats(pf->veb[i]);
6147         }
6148
6149         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6150 }
6151
6152 /**
6153  * i40e_reset_subtask - Set up for resetting the device and driver
6154  * @pf: board private structure
6155  **/
6156 static void i40e_reset_subtask(struct i40e_pf *pf)
6157 {
6158         u32 reset_flags = 0;
6159
6160         rtnl_lock();
6161         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6162                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6163                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6164         }
6165         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6166                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6167                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6168         }
6169         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6170                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6171                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6172         }
6173         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6174                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6175                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6176         }
6177         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6178                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6179                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6180         }
6181
6182         /* If there's a recovery already waiting, it takes
6183          * precedence before starting a new reset sequence.
6184          */
6185         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6186                 i40e_handle_reset_warning(pf);
6187                 goto unlock;
6188         }
6189
6190         /* If we're already down or resetting, just bail */
6191         if (reset_flags &&
6192             !test_bit(__I40E_DOWN, &pf->state) &&
6193             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6194                 i40e_do_reset(pf, reset_flags);
6195
6196 unlock:
6197         rtnl_unlock();
6198 }
6199
6200 /**
6201  * i40e_handle_link_event - Handle link event
6202  * @pf: board private structure
6203  * @e: event info posted on ARQ
6204  **/
6205 static void i40e_handle_link_event(struct i40e_pf *pf,
6206                                    struct i40e_arq_event_info *e)
6207 {
6208         struct i40e_aqc_get_link_status *status =
6209                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6210
6211         /* Do a new status request to re-enable LSE reporting
6212          * and load new status information into the hw struct
6213          * This completely ignores any state information
6214          * in the ARQ event info, instead choosing to always
6215          * issue the AQ update link status command.
6216          */
6217         i40e_link_event(pf);
6218
6219         /* check for unqualified module, if link is down */
6220         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6221             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6222             (!(status->link_info & I40E_AQ_LINK_UP)))
6223                 dev_err(&pf->pdev->dev,
6224                         "The driver failed to link because an unqualified module was detected.\n");
6225 }
6226
6227 /**
6228  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6229  * @pf: board private structure
6230  **/
6231 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6232 {
6233         struct i40e_arq_event_info event;
6234         struct i40e_hw *hw = &pf->hw;
6235         u16 pending, i = 0;
6236         i40e_status ret;
6237         u16 opcode;
6238         u32 oldval;
6239         u32 val;
6240
6241         /* Do not run clean AQ when PF reset fails */
6242         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6243                 return;
6244
6245         /* check for error indications */
6246         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6247         oldval = val;
6248         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6249                 if (hw->debug_mask & I40E_DEBUG_AQ)
6250                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6251                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6252         }
6253         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6254                 if (hw->debug_mask & I40E_DEBUG_AQ)
6255                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6256                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6257                 pf->arq_overflows++;
6258         }
6259         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6260                 if (hw->debug_mask & I40E_DEBUG_AQ)
6261                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6262                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6263         }
6264         if (oldval != val)
6265                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6266
6267         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6268         oldval = val;
6269         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6270                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6271                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6272                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6273         }
6274         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6275                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6276                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6277                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6278         }
6279         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6280                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6281                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6282                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6283         }
6284         if (oldval != val)
6285                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6286
6287         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6288         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6289         if (!event.msg_buf)
6290                 return;
6291
6292         do {
6293                 ret = i40e_clean_arq_element(hw, &event, &pending);
6294                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6295                         break;
6296                 else if (ret) {
6297                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6298                         break;
6299                 }
6300
6301                 opcode = le16_to_cpu(event.desc.opcode);
6302                 switch (opcode) {
6303
6304                 case i40e_aqc_opc_get_link_status:
6305                         i40e_handle_link_event(pf, &event);
6306                         break;
6307                 case i40e_aqc_opc_send_msg_to_pf:
6308                         ret = i40e_vc_process_vf_msg(pf,
6309                                         le16_to_cpu(event.desc.retval),
6310                                         le32_to_cpu(event.desc.cookie_high),
6311                                         le32_to_cpu(event.desc.cookie_low),
6312                                         event.msg_buf,
6313                                         event.msg_len);
6314                         break;
6315                 case i40e_aqc_opc_lldp_update_mib:
6316                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6317 #ifdef CONFIG_I40E_DCB
6318                         rtnl_lock();
6319                         ret = i40e_handle_lldp_event(pf, &event);
6320                         rtnl_unlock();
6321 #endif /* CONFIG_I40E_DCB */
6322                         break;
6323                 case i40e_aqc_opc_event_lan_overflow:
6324                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6325                         i40e_handle_lan_overflow_event(pf, &event);
6326                         break;
6327                 case i40e_aqc_opc_send_msg_to_peer:
6328                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6329                         break;
6330                 case i40e_aqc_opc_nvm_erase:
6331                 case i40e_aqc_opc_nvm_update:
6332                 case i40e_aqc_opc_oem_post_update:
6333                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6334                                    "ARQ NVM operation 0x%04x completed\n",
6335                                    opcode);
6336                         break;
6337                 default:
6338                         dev_info(&pf->pdev->dev,
6339                                  "ARQ: Unknown event 0x%04x ignored\n",
6340                                  opcode);
6341                         break;
6342                 }
6343         } while (pending && (i++ < pf->adminq_work_limit));
6344
6345         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6346         /* re-enable Admin queue interrupt cause */
6347         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6348         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6349         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6350         i40e_flush(hw);
6351
6352         kfree(event.msg_buf);
6353 }
6354
6355 /**
6356  * i40e_verify_eeprom - make sure eeprom is good to use
6357  * @pf: board private structure
6358  **/
6359 static void i40e_verify_eeprom(struct i40e_pf *pf)
6360 {
6361         int err;
6362
6363         err = i40e_diag_eeprom_test(&pf->hw);
6364         if (err) {
6365                 /* retry in case of garbage read */
6366                 err = i40e_diag_eeprom_test(&pf->hw);
6367                 if (err) {
6368                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6369                                  err);
6370                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6371                 }
6372         }
6373
6374         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6375                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6376                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6377         }
6378 }
6379
6380 /**
6381  * i40e_enable_pf_switch_lb
6382  * @pf: pointer to the PF structure
6383  *
6384  * enable switch loop back or die - no point in a return value
6385  **/
6386 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6387 {
6388         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6389         struct i40e_vsi_context ctxt;
6390         int ret;
6391
6392         ctxt.seid = pf->main_vsi_seid;
6393         ctxt.pf_num = pf->hw.pf_id;
6394         ctxt.vf_num = 0;
6395         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6396         if (ret) {
6397                 dev_info(&pf->pdev->dev,
6398                          "couldn't get PF vsi config, err %s aq_err %s\n",
6399                          i40e_stat_str(&pf->hw, ret),
6400                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6401                 return;
6402         }
6403         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6404         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6405         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6406
6407         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6408         if (ret) {
6409                 dev_info(&pf->pdev->dev,
6410                          "update vsi switch failed, err %s aq_err %s\n",
6411                          i40e_stat_str(&pf->hw, ret),
6412                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6413         }
6414 }
6415
6416 /**
6417  * i40e_disable_pf_switch_lb
6418  * @pf: pointer to the PF structure
6419  *
6420  * disable switch loop back or die - no point in a return value
6421  **/
6422 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6423 {
6424         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6425         struct i40e_vsi_context ctxt;
6426         int ret;
6427
6428         ctxt.seid = pf->main_vsi_seid;
6429         ctxt.pf_num = pf->hw.pf_id;
6430         ctxt.vf_num = 0;
6431         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6432         if (ret) {
6433                 dev_info(&pf->pdev->dev,
6434                          "couldn't get PF vsi config, err %s aq_err %s\n",
6435                          i40e_stat_str(&pf->hw, ret),
6436                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6437                 return;
6438         }
6439         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6440         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6441         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6442
6443         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6444         if (ret) {
6445                 dev_info(&pf->pdev->dev,
6446                          "update vsi switch failed, err %s aq_err %s\n",
6447                          i40e_stat_str(&pf->hw, ret),
6448                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6449         }
6450 }
6451
6452 /**
6453  * i40e_config_bridge_mode - Configure the HW bridge mode
6454  * @veb: pointer to the bridge instance
6455  *
6456  * Configure the loop back mode for the LAN VSI that is downlink to the
6457  * specified HW bridge instance. It is expected this function is called
6458  * when a new HW bridge is instantiated.
6459  **/
6460 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6461 {
6462         struct i40e_pf *pf = veb->pf;
6463
6464         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6465                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6466                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6467         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6468                 i40e_disable_pf_switch_lb(pf);
6469         else
6470                 i40e_enable_pf_switch_lb(pf);
6471 }
6472
6473 /**
6474  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6475  * @veb: pointer to the VEB instance
6476  *
6477  * This is a recursive function that first builds the attached VSIs then
6478  * recurses in to build the next layer of VEB.  We track the connections
6479  * through our own index numbers because the seid's from the HW could
6480  * change across the reset.
6481  **/
6482 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6483 {
6484         struct i40e_vsi *ctl_vsi = NULL;
6485         struct i40e_pf *pf = veb->pf;
6486         int v, veb_idx;
6487         int ret;
6488
6489         /* build VSI that owns this VEB, temporarily attached to base VEB */
6490         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6491                 if (pf->vsi[v] &&
6492                     pf->vsi[v]->veb_idx == veb->idx &&
6493                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6494                         ctl_vsi = pf->vsi[v];
6495                         break;
6496                 }
6497         }
6498         if (!ctl_vsi) {
6499                 dev_info(&pf->pdev->dev,
6500                          "missing owner VSI for veb_idx %d\n", veb->idx);
6501                 ret = -ENOENT;
6502                 goto end_reconstitute;
6503         }
6504         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6505                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6506         ret = i40e_add_vsi(ctl_vsi);
6507         if (ret) {
6508                 dev_info(&pf->pdev->dev,
6509                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6510                          veb->idx, ret);
6511                 goto end_reconstitute;
6512         }
6513         i40e_vsi_reset_stats(ctl_vsi);
6514
6515         /* create the VEB in the switch and move the VSI onto the VEB */
6516         ret = i40e_add_veb(veb, ctl_vsi);
6517         if (ret)
6518                 goto end_reconstitute;
6519
6520         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6521                 veb->bridge_mode = BRIDGE_MODE_VEB;
6522         else
6523                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6524         i40e_config_bridge_mode(veb);
6525
6526         /* create the remaining VSIs attached to this VEB */
6527         for (v = 0; v < pf->num_alloc_vsi; v++) {
6528                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6529                         continue;
6530
6531                 if (pf->vsi[v]->veb_idx == veb->idx) {
6532                         struct i40e_vsi *vsi = pf->vsi[v];
6533
6534                         vsi->uplink_seid = veb->seid;
6535                         ret = i40e_add_vsi(vsi);
6536                         if (ret) {
6537                                 dev_info(&pf->pdev->dev,
6538                                          "rebuild of vsi_idx %d failed: %d\n",
6539                                          v, ret);
6540                                 goto end_reconstitute;
6541                         }
6542                         i40e_vsi_reset_stats(vsi);
6543                 }
6544         }
6545
6546         /* create any VEBs attached to this VEB - RECURSION */
6547         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6548                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6549                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6550                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6551                         if (ret)
6552                                 break;
6553                 }
6554         }
6555
6556 end_reconstitute:
6557         return ret;
6558 }
6559
6560 /**
6561  * i40e_get_capabilities - get info about the HW
6562  * @pf: the PF struct
6563  **/
6564 static int i40e_get_capabilities(struct i40e_pf *pf)
6565 {
6566         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6567         u16 data_size;
6568         int buf_len;
6569         int err;
6570
6571         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6572         do {
6573                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6574                 if (!cap_buf)
6575                         return -ENOMEM;
6576
6577                 /* this loads the data into the hw struct for us */
6578                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6579                                             &data_size,
6580                                             i40e_aqc_opc_list_func_capabilities,
6581                                             NULL);
6582                 /* data loaded, buffer no longer needed */
6583                 kfree(cap_buf);
6584
6585                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6586                         /* retry with a larger buffer */
6587                         buf_len = data_size;
6588                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6589                         dev_info(&pf->pdev->dev,
6590                                  "capability discovery failed, err %s aq_err %s\n",
6591                                  i40e_stat_str(&pf->hw, err),
6592                                  i40e_aq_str(&pf->hw,
6593                                              pf->hw.aq.asq_last_status));
6594                         return -ENODEV;
6595                 }
6596         } while (err);
6597
6598         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6599                 dev_info(&pf->pdev->dev,
6600                          "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",
6601                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6602                          pf->hw.func_caps.num_msix_vectors,
6603                          pf->hw.func_caps.num_msix_vectors_vf,
6604                          pf->hw.func_caps.fd_filters_guaranteed,
6605                          pf->hw.func_caps.fd_filters_best_effort,
6606                          pf->hw.func_caps.num_tx_qp,
6607                          pf->hw.func_caps.num_vsis);
6608
6609 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6610                        + pf->hw.func_caps.num_vfs)
6611         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6612                 dev_info(&pf->pdev->dev,
6613                          "got num_vsis %d, setting num_vsis to %d\n",
6614                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6615                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6616         }
6617
6618         return 0;
6619 }
6620
6621 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6622
6623 /**
6624  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6625  * @pf: board private structure
6626  **/
6627 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6628 {
6629         struct i40e_vsi *vsi;
6630         int i;
6631
6632         /* quick workaround for an NVM issue that leaves a critical register
6633          * uninitialized
6634          */
6635         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6636                 static const u32 hkey[] = {
6637                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6638                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6639                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6640                         0x95b3a76d};
6641
6642                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6643                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6644         }
6645
6646         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6647                 return;
6648
6649         /* find existing VSI and see if it needs configuring */
6650         vsi = NULL;
6651         for (i = 0; i < pf->num_alloc_vsi; i++) {
6652                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6653                         vsi = pf->vsi[i];
6654                         break;
6655                 }
6656         }
6657
6658         /* create a new VSI if none exists */
6659         if (!vsi) {
6660                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6661                                      pf->vsi[pf->lan_vsi]->seid, 0);
6662                 if (!vsi) {
6663                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6664                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6665                         return;
6666                 }
6667         }
6668
6669         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6670 }
6671
6672 /**
6673  * i40e_fdir_teardown - release the Flow Director resources
6674  * @pf: board private structure
6675  **/
6676 static void i40e_fdir_teardown(struct i40e_pf *pf)
6677 {
6678         int i;
6679
6680         i40e_fdir_filter_exit(pf);
6681         for (i = 0; i < pf->num_alloc_vsi; i++) {
6682                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6683                         i40e_vsi_release(pf->vsi[i]);
6684                         break;
6685                 }
6686         }
6687 }
6688
6689 /**
6690  * i40e_prep_for_reset - prep for the core to reset
6691  * @pf: board private structure
6692  *
6693  * Close up the VFs and other things in prep for PF Reset.
6694   **/
6695 static void i40e_prep_for_reset(struct i40e_pf *pf)
6696 {
6697         struct i40e_hw *hw = &pf->hw;
6698         i40e_status ret = 0;
6699         u32 v;
6700
6701         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6702         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6703                 return;
6704         if (i40e_check_asq_alive(&pf->hw))
6705                 i40e_vc_notify_reset(pf);
6706
6707         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6708
6709         /* quiesce the VSIs and their queues that are not already DOWN */
6710         i40e_pf_quiesce_all_vsi(pf);
6711
6712         for (v = 0; v < pf->num_alloc_vsi; v++) {
6713                 if (pf->vsi[v])
6714                         pf->vsi[v]->seid = 0;
6715         }
6716
6717         i40e_shutdown_adminq(&pf->hw);
6718
6719         /* call shutdown HMC */
6720         if (hw->hmc.hmc_obj) {
6721                 ret = i40e_shutdown_lan_hmc(hw);
6722                 if (ret)
6723                         dev_warn(&pf->pdev->dev,
6724                                  "shutdown_lan_hmc failed: %d\n", ret);
6725         }
6726 }
6727
6728 /**
6729  * i40e_send_version - update firmware with driver version
6730  * @pf: PF struct
6731  */
6732 static void i40e_send_version(struct i40e_pf *pf)
6733 {
6734         struct i40e_driver_version dv;
6735
6736         dv.major_version = DRV_VERSION_MAJOR;
6737         dv.minor_version = DRV_VERSION_MINOR;
6738         dv.build_version = DRV_VERSION_BUILD;
6739         dv.subbuild_version = 0;
6740         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6741         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6742 }
6743
6744 /**
6745  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6746  * @pf: board private structure
6747  * @reinit: if the Main VSI needs to re-initialized.
6748  **/
6749 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6750 {
6751         struct i40e_hw *hw = &pf->hw;
6752         u8 set_fc_aq_fail = 0;
6753         i40e_status ret;
6754         u32 val;
6755         u32 v;
6756
6757         /* Now we wait for GRST to settle out.
6758          * We don't have to delete the VEBs or VSIs from the hw switch
6759          * because the reset will make them disappear.
6760          */
6761         ret = i40e_pf_reset(hw);
6762         if (ret) {
6763                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6764                 set_bit(__I40E_RESET_FAILED, &pf->state);
6765                 goto clear_recovery;
6766         }
6767         pf->pfr_count++;
6768
6769         if (test_bit(__I40E_DOWN, &pf->state))
6770                 goto clear_recovery;
6771         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6772
6773         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6774         ret = i40e_init_adminq(&pf->hw);
6775         if (ret) {
6776                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6777                          i40e_stat_str(&pf->hw, ret),
6778                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6779                 goto clear_recovery;
6780         }
6781
6782         /* re-verify the eeprom if we just had an EMP reset */
6783         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6784                 i40e_verify_eeprom(pf);
6785
6786         i40e_clear_pxe_mode(hw);
6787         ret = i40e_get_capabilities(pf);
6788         if (ret)
6789                 goto end_core_reset;
6790
6791         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6792                                 hw->func_caps.num_rx_qp,
6793                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6794         if (ret) {
6795                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6796                 goto end_core_reset;
6797         }
6798         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6799         if (ret) {
6800                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6801                 goto end_core_reset;
6802         }
6803
6804 #ifdef CONFIG_I40E_DCB
6805         ret = i40e_init_pf_dcb(pf);
6806         if (ret) {
6807                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6808                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6809                 /* Continue without DCB enabled */
6810         }
6811 #endif /* CONFIG_I40E_DCB */
6812 #ifdef I40E_FCOE
6813         i40e_init_pf_fcoe(pf);
6814
6815 #endif
6816         /* do basic switch setup */
6817         ret = i40e_setup_pf_switch(pf, reinit);
6818         if (ret)
6819                 goto end_core_reset;
6820
6821         /* The driver only wants link up/down and module qualification
6822          * reports from firmware.  Note the negative logic.
6823          */
6824         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6825                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6826                                          I40E_AQ_EVENT_MEDIA_NA |
6827                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6828         if (ret)
6829                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6830                          i40e_stat_str(&pf->hw, ret),
6831                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6832
6833         /* make sure our flow control settings are restored */
6834         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6835         if (ret)
6836                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6837                         i40e_stat_str(&pf->hw, ret),
6838                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6839
6840         /* Rebuild the VSIs and VEBs that existed before reset.
6841          * They are still in our local switch element arrays, so only
6842          * need to rebuild the switch model in the HW.
6843          *
6844          * If there were VEBs but the reconstitution failed, we'll try
6845          * try to recover minimal use by getting the basic PF VSI working.
6846          */
6847         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6848                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6849                 /* find the one VEB connected to the MAC, and find orphans */
6850                 for (v = 0; v < I40E_MAX_VEB; v++) {
6851                         if (!pf->veb[v])
6852                                 continue;
6853
6854                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6855                             pf->veb[v]->uplink_seid == 0) {
6856                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6857
6858                                 if (!ret)
6859                                         continue;
6860
6861                                 /* If Main VEB failed, we're in deep doodoo,
6862                                  * so give up rebuilding the switch and set up
6863                                  * for minimal rebuild of PF VSI.
6864                                  * If orphan failed, we'll report the error
6865                                  * but try to keep going.
6866                                  */
6867                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6868                                         dev_info(&pf->pdev->dev,
6869                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6870                                                  ret);
6871                                         pf->vsi[pf->lan_vsi]->uplink_seid
6872                                                                 = pf->mac_seid;
6873                                         break;
6874                                 } else if (pf->veb[v]->uplink_seid == 0) {
6875                                         dev_info(&pf->pdev->dev,
6876                                                  "rebuild of orphan VEB failed: %d\n",
6877                                                  ret);
6878                                 }
6879                         }
6880                 }
6881         }
6882
6883         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6884                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6885                 /* no VEB, so rebuild only the Main VSI */
6886                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6887                 if (ret) {
6888                         dev_info(&pf->pdev->dev,
6889                                  "rebuild of Main VSI failed: %d\n", ret);
6890                         goto end_core_reset;
6891                 }
6892         }
6893
6894         /* Reconfigure hardware for allowing smaller MSS in the case
6895          * of TSO, so that we avoid the MDD being fired and causing
6896          * a reset in the case of small MSS+TSO.
6897          */
6898 #define I40E_REG_MSS          0x000E64DC
6899 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6900 #define I40E_64BYTE_MSS       0x400000
6901         val = rd32(hw, I40E_REG_MSS);
6902         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6903                 val &= ~I40E_REG_MSS_MIN_MASK;
6904                 val |= I40E_64BYTE_MSS;
6905                 wr32(hw, I40E_REG_MSS, val);
6906         }
6907
6908         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6909                 msleep(75);
6910                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6911                 if (ret)
6912                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6913                                  i40e_stat_str(&pf->hw, ret),
6914                                  i40e_aq_str(&pf->hw,
6915                                              pf->hw.aq.asq_last_status));
6916         }
6917         /* reinit the misc interrupt */
6918         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6919                 ret = i40e_setup_misc_vector(pf);
6920
6921         /* Add a filter to drop all Flow control frames from any VSI from being
6922          * transmitted. By doing so we stop a malicious VF from sending out
6923          * PAUSE or PFC frames and potentially controlling traffic for other
6924          * PF/VF VSIs.
6925          * The FW can still send Flow control frames if enabled.
6926          */
6927         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6928                                                        pf->main_vsi_seid);
6929
6930         /* restart the VSIs that were rebuilt and running before the reset */
6931         i40e_pf_unquiesce_all_vsi(pf);
6932
6933         if (pf->num_alloc_vfs) {
6934                 for (v = 0; v < pf->num_alloc_vfs; v++)
6935                         i40e_reset_vf(&pf->vf[v], true);
6936         }
6937
6938         /* tell the firmware that we're starting */
6939         i40e_send_version(pf);
6940
6941 end_core_reset:
6942         clear_bit(__I40E_RESET_FAILED, &pf->state);
6943 clear_recovery:
6944         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6945 }
6946
6947 /**
6948  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6949  * @pf: board private structure
6950  *
6951  * Close up the VFs and other things in prep for a Core Reset,
6952  * then get ready to rebuild the world.
6953  **/
6954 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6955 {
6956         i40e_prep_for_reset(pf);
6957         i40e_reset_and_rebuild(pf, false);
6958 }
6959
6960 /**
6961  * i40e_handle_mdd_event
6962  * @pf: pointer to the PF structure
6963  *
6964  * Called from the MDD irq handler to identify possibly malicious vfs
6965  **/
6966 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6967 {
6968         struct i40e_hw *hw = &pf->hw;
6969         bool mdd_detected = false;
6970         bool pf_mdd_detected = false;
6971         struct i40e_vf *vf;
6972         u32 reg;
6973         int i;
6974
6975         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6976                 return;
6977
6978         /* find what triggered the MDD event */
6979         reg = rd32(hw, I40E_GL_MDET_TX);
6980         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6981                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6982                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6983                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6984                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6985                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6986                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6987                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6988                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6989                                 pf->hw.func_caps.base_queue;
6990                 if (netif_msg_tx_err(pf))
6991                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6992                                  event, queue, pf_num, vf_num);
6993                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6994                 mdd_detected = true;
6995         }
6996         reg = rd32(hw, I40E_GL_MDET_RX);
6997         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6998                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6999                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7000                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7001                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7002                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7003                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7004                                 pf->hw.func_caps.base_queue;
7005                 if (netif_msg_rx_err(pf))
7006                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7007                                  event, queue, func);
7008                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7009                 mdd_detected = true;
7010         }
7011
7012         if (mdd_detected) {
7013                 reg = rd32(hw, I40E_PF_MDET_TX);
7014                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7015                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7016                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7017                         pf_mdd_detected = true;
7018                 }
7019                 reg = rd32(hw, I40E_PF_MDET_RX);
7020                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7021                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7022                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7023                         pf_mdd_detected = true;
7024                 }
7025                 /* Queue belongs to the PF, initiate a reset */
7026                 if (pf_mdd_detected) {
7027                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7028                         i40e_service_event_schedule(pf);
7029                 }
7030         }
7031
7032         /* see if one of the VFs needs its hand slapped */
7033         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7034                 vf = &(pf->vf[i]);
7035                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7036                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7037                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7038                         vf->num_mdd_events++;
7039                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7040                                  i);
7041                 }
7042
7043                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7044                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7045                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7046                         vf->num_mdd_events++;
7047                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7048                                  i);
7049                 }
7050
7051                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7052                         dev_info(&pf->pdev->dev,
7053                                  "Too many MDD events on VF %d, disabled\n", i);
7054                         dev_info(&pf->pdev->dev,
7055                                  "Use PF Control I/F to re-enable the VF\n");
7056                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7057                 }
7058         }
7059
7060         /* re-enable mdd interrupt cause */
7061         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7062         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7063         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7064         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7065         i40e_flush(hw);
7066 }
7067
7068 /**
7069  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7070  * @pf: board private structure
7071  **/
7072 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7073 {
7074         struct i40e_hw *hw = &pf->hw;
7075         i40e_status ret;
7076         __be16 port;
7077         int i;
7078
7079         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7080                 return;
7081
7082         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7083
7084         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7085                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7086                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7087                         port = pf->udp_ports[i].index;
7088                         if (port)
7089                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7090                                                      pf->udp_ports[i].type,
7091                                                      NULL, NULL);
7092                         else
7093                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7094
7095                         if (ret) {
7096                                 dev_dbg(&pf->pdev->dev,
7097                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7098                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7099                                         port ? "add" : "delete",
7100                                         ntohs(port), i,
7101                                         i40e_stat_str(&pf->hw, ret),
7102                                         i40e_aq_str(&pf->hw,
7103                                                     pf->hw.aq.asq_last_status));
7104                                 pf->udp_ports[i].index = 0;
7105                         }
7106                 }
7107         }
7108 }
7109
7110 /**
7111  * i40e_service_task - Run the driver's async subtasks
7112  * @work: pointer to work_struct containing our data
7113  **/
7114 static void i40e_service_task(struct work_struct *work)
7115 {
7116         struct i40e_pf *pf = container_of(work,
7117                                           struct i40e_pf,
7118                                           service_task);
7119         unsigned long start_time = jiffies;
7120
7121         /* don't bother with service tasks if a reset is in progress */
7122         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7123                 i40e_service_event_complete(pf);
7124                 return;
7125         }
7126
7127         i40e_detect_recover_hung(pf);
7128         i40e_sync_filters_subtask(pf);
7129         i40e_reset_subtask(pf);
7130         i40e_handle_mdd_event(pf);
7131         i40e_vc_process_vflr_event(pf);
7132         i40e_watchdog_subtask(pf);
7133         i40e_fdir_reinit_subtask(pf);
7134         i40e_client_subtask(pf);
7135         i40e_sync_filters_subtask(pf);
7136         i40e_sync_udp_filters_subtask(pf);
7137         i40e_clean_adminq_subtask(pf);
7138
7139         i40e_service_event_complete(pf);
7140
7141         /* If the tasks have taken longer than one timer cycle or there
7142          * is more work to be done, reschedule the service task now
7143          * rather than wait for the timer to tick again.
7144          */
7145         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7146             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7147             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7148             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7149                 i40e_service_event_schedule(pf);
7150 }
7151
7152 /**
7153  * i40e_service_timer - timer callback
7154  * @data: pointer to PF struct
7155  **/
7156 static void i40e_service_timer(unsigned long data)
7157 {
7158         struct i40e_pf *pf = (struct i40e_pf *)data;
7159
7160         mod_timer(&pf->service_timer,
7161                   round_jiffies(jiffies + pf->service_timer_period));
7162         i40e_service_event_schedule(pf);
7163 }
7164
7165 /**
7166  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7167  * @vsi: the VSI being configured
7168  **/
7169 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7170 {
7171         struct i40e_pf *pf = vsi->back;
7172
7173         switch (vsi->type) {
7174         case I40E_VSI_MAIN:
7175                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7176                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7177                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7178                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7179                         vsi->num_q_vectors = pf->num_lan_msix;
7180                 else
7181                         vsi->num_q_vectors = 1;
7182
7183                 break;
7184
7185         case I40E_VSI_FDIR:
7186                 vsi->alloc_queue_pairs = 1;
7187                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7188                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7189                 vsi->num_q_vectors = pf->num_fdsb_msix;
7190                 break;
7191
7192         case I40E_VSI_VMDQ2:
7193                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7194                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7195                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7196                 vsi->num_q_vectors = pf->num_vmdq_msix;
7197                 break;
7198
7199         case I40E_VSI_SRIOV:
7200                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7201                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7202                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7203                 break;
7204
7205 #ifdef I40E_FCOE
7206         case I40E_VSI_FCOE:
7207                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7208                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7209                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7210                 vsi->num_q_vectors = pf->num_fcoe_msix;
7211                 break;
7212
7213 #endif /* I40E_FCOE */
7214         default:
7215                 WARN_ON(1);
7216                 return -ENODATA;
7217         }
7218
7219         return 0;
7220 }
7221
7222 /**
7223  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7224  * @type: VSI pointer
7225  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7226  *
7227  * On error: returns error code (negative)
7228  * On success: returns 0
7229  **/
7230 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7231 {
7232         int size;
7233         int ret = 0;
7234
7235         /* allocate memory for both Tx and Rx ring pointers */
7236         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7237         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7238         if (!vsi->tx_rings)
7239                 return -ENOMEM;
7240         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7241
7242         if (alloc_qvectors) {
7243                 /* allocate memory for q_vector pointers */
7244                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7245                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7246                 if (!vsi->q_vectors) {
7247                         ret = -ENOMEM;
7248                         goto err_vectors;
7249                 }
7250         }
7251         return ret;
7252
7253 err_vectors:
7254         kfree(vsi->tx_rings);
7255         return ret;
7256 }
7257
7258 /**
7259  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7260  * @pf: board private structure
7261  * @type: type of VSI
7262  *
7263  * On error: returns error code (negative)
7264  * On success: returns vsi index in PF (positive)
7265  **/
7266 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7267 {
7268         int ret = -ENODEV;
7269         struct i40e_vsi *vsi;
7270         int vsi_idx;
7271         int i;
7272
7273         /* Need to protect the allocation of the VSIs at the PF level */
7274         mutex_lock(&pf->switch_mutex);
7275
7276         /* VSI list may be fragmented if VSI creation/destruction has
7277          * been happening.  We can afford to do a quick scan to look
7278          * for any free VSIs in the list.
7279          *
7280          * find next empty vsi slot, looping back around if necessary
7281          */
7282         i = pf->next_vsi;
7283         while (i < pf->num_alloc_vsi && pf->vsi[i])
7284                 i++;
7285         if (i >= pf->num_alloc_vsi) {
7286                 i = 0;
7287                 while (i < pf->next_vsi && pf->vsi[i])
7288                         i++;
7289         }
7290
7291         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7292                 vsi_idx = i;             /* Found one! */
7293         } else {
7294                 ret = -ENODEV;
7295                 goto unlock_pf;  /* out of VSI slots! */
7296         }
7297         pf->next_vsi = ++i;
7298
7299         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7300         if (!vsi) {
7301                 ret = -ENOMEM;
7302                 goto unlock_pf;
7303         }
7304         vsi->type = type;
7305         vsi->back = pf;
7306         set_bit(__I40E_DOWN, &vsi->state);
7307         vsi->flags = 0;
7308         vsi->idx = vsi_idx;
7309         vsi->int_rate_limit = 0;
7310         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7311                                 pf->rss_table_size : 64;
7312         vsi->netdev_registered = false;
7313         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7314         INIT_LIST_HEAD(&vsi->mac_filter_list);
7315         vsi->irqs_ready = false;
7316
7317         ret = i40e_set_num_rings_in_vsi(vsi);
7318         if (ret)
7319                 goto err_rings;
7320
7321         ret = i40e_vsi_alloc_arrays(vsi, true);
7322         if (ret)
7323                 goto err_rings;
7324
7325         /* Setup default MSIX irq handler for VSI */
7326         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7327
7328         /* Initialize VSI lock */
7329         spin_lock_init(&vsi->mac_filter_list_lock);
7330         pf->vsi[vsi_idx] = vsi;
7331         ret = vsi_idx;
7332         goto unlock_pf;
7333
7334 err_rings:
7335         pf->next_vsi = i - 1;
7336         kfree(vsi);
7337 unlock_pf:
7338         mutex_unlock(&pf->switch_mutex);
7339         return ret;
7340 }
7341
7342 /**
7343  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7344  * @type: VSI pointer
7345  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7346  *
7347  * On error: returns error code (negative)
7348  * On success: returns 0
7349  **/
7350 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7351 {
7352         /* free the ring and vector containers */
7353         if (free_qvectors) {
7354                 kfree(vsi->q_vectors);
7355                 vsi->q_vectors = NULL;
7356         }
7357         kfree(vsi->tx_rings);
7358         vsi->tx_rings = NULL;
7359         vsi->rx_rings = NULL;
7360 }
7361
7362 /**
7363  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7364  * and lookup table
7365  * @vsi: Pointer to VSI structure
7366  */
7367 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7368 {
7369         if (!vsi)
7370                 return;
7371
7372         kfree(vsi->rss_hkey_user);
7373         vsi->rss_hkey_user = NULL;
7374
7375         kfree(vsi->rss_lut_user);
7376         vsi->rss_lut_user = NULL;
7377 }
7378
7379 /**
7380  * i40e_vsi_clear - Deallocate the VSI provided
7381  * @vsi: the VSI being un-configured
7382  **/
7383 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7384 {
7385         struct i40e_pf *pf;
7386
7387         if (!vsi)
7388                 return 0;
7389
7390         if (!vsi->back)
7391                 goto free_vsi;
7392         pf = vsi->back;
7393
7394         mutex_lock(&pf->switch_mutex);
7395         if (!pf->vsi[vsi->idx]) {
7396                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7397                         vsi->idx, vsi->idx, vsi, vsi->type);
7398                 goto unlock_vsi;
7399         }
7400
7401         if (pf->vsi[vsi->idx] != vsi) {
7402                 dev_err(&pf->pdev->dev,
7403                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7404                         pf->vsi[vsi->idx]->idx,
7405                         pf->vsi[vsi->idx],
7406                         pf->vsi[vsi->idx]->type,
7407                         vsi->idx, vsi, vsi->type);
7408                 goto unlock_vsi;
7409         }
7410
7411         /* updates the PF for this cleared vsi */
7412         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7413         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7414
7415         i40e_vsi_free_arrays(vsi, true);
7416         i40e_clear_rss_config_user(vsi);
7417
7418         pf->vsi[vsi->idx] = NULL;
7419         if (vsi->idx < pf->next_vsi)
7420                 pf->next_vsi = vsi->idx;
7421
7422 unlock_vsi:
7423         mutex_unlock(&pf->switch_mutex);
7424 free_vsi:
7425         kfree(vsi);
7426
7427         return 0;
7428 }
7429
7430 /**
7431  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7432  * @vsi: the VSI being cleaned
7433  **/
7434 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7435 {
7436         int i;
7437
7438         if (vsi->tx_rings && vsi->tx_rings[0]) {
7439                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7440                         kfree_rcu(vsi->tx_rings[i], rcu);
7441                         vsi->tx_rings[i] = NULL;
7442                         vsi->rx_rings[i] = NULL;
7443                 }
7444         }
7445 }
7446
7447 /**
7448  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7449  * @vsi: the VSI being configured
7450  **/
7451 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7452 {
7453         struct i40e_ring *tx_ring, *rx_ring;
7454         struct i40e_pf *pf = vsi->back;
7455         int i;
7456
7457         /* Set basic values in the rings to be used later during open() */
7458         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7459                 /* allocate space for both Tx and Rx in one shot */
7460                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7461                 if (!tx_ring)
7462                         goto err_out;
7463
7464                 tx_ring->queue_index = i;
7465                 tx_ring->reg_idx = vsi->base_queue + i;
7466                 tx_ring->ring_active = false;
7467                 tx_ring->vsi = vsi;
7468                 tx_ring->netdev = vsi->netdev;
7469                 tx_ring->dev = &pf->pdev->dev;
7470                 tx_ring->count = vsi->num_desc;
7471                 tx_ring->size = 0;
7472                 tx_ring->dcb_tc = 0;
7473                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7474                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7475                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7476                 vsi->tx_rings[i] = tx_ring;
7477
7478                 rx_ring = &tx_ring[1];
7479                 rx_ring->queue_index = i;
7480                 rx_ring->reg_idx = vsi->base_queue + i;
7481                 rx_ring->ring_active = false;
7482                 rx_ring->vsi = vsi;
7483                 rx_ring->netdev = vsi->netdev;
7484                 rx_ring->dev = &pf->pdev->dev;
7485                 rx_ring->count = vsi->num_desc;
7486                 rx_ring->size = 0;
7487                 rx_ring->dcb_tc = 0;
7488                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7489                 vsi->rx_rings[i] = rx_ring;
7490         }
7491
7492         return 0;
7493
7494 err_out:
7495         i40e_vsi_clear_rings(vsi);
7496         return -ENOMEM;
7497 }
7498
7499 /**
7500  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7501  * @pf: board private structure
7502  * @vectors: the number of MSI-X vectors to request
7503  *
7504  * Returns the number of vectors reserved, or error
7505  **/
7506 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7507 {
7508         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7509                                         I40E_MIN_MSIX, vectors);
7510         if (vectors < 0) {
7511                 dev_info(&pf->pdev->dev,
7512                          "MSI-X vector reservation failed: %d\n", vectors);
7513                 vectors = 0;
7514         }
7515
7516         return vectors;
7517 }
7518
7519 /**
7520  * i40e_init_msix - Setup the MSIX capability
7521  * @pf: board private structure
7522  *
7523  * Work with the OS to set up the MSIX vectors needed.
7524  *
7525  * Returns the number of vectors reserved or negative on failure
7526  **/
7527 static int i40e_init_msix(struct i40e_pf *pf)
7528 {
7529         struct i40e_hw *hw = &pf->hw;
7530         int vectors_left;
7531         int v_budget, i;
7532         int v_actual;
7533         int iwarp_requested = 0;
7534
7535         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7536                 return -ENODEV;
7537
7538         /* The number of vectors we'll request will be comprised of:
7539          *   - Add 1 for "other" cause for Admin Queue events, etc.
7540          *   - The number of LAN queue pairs
7541          *      - Queues being used for RSS.
7542          *              We don't need as many as max_rss_size vectors.
7543          *              use rss_size instead in the calculation since that
7544          *              is governed by number of cpus in the system.
7545          *      - assumes symmetric Tx/Rx pairing
7546          *   - The number of VMDq pairs
7547          *   - The CPU count within the NUMA node if iWARP is enabled
7548 #ifdef I40E_FCOE
7549          *   - The number of FCOE qps.
7550 #endif
7551          * Once we count this up, try the request.
7552          *
7553          * If we can't get what we want, we'll simplify to nearly nothing
7554          * and try again.  If that still fails, we punt.
7555          */
7556         vectors_left = hw->func_caps.num_msix_vectors;
7557         v_budget = 0;
7558
7559         /* reserve one vector for miscellaneous handler */
7560         if (vectors_left) {
7561                 v_budget++;
7562                 vectors_left--;
7563         }
7564
7565         /* reserve vectors for the main PF traffic queues */
7566         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7567         vectors_left -= pf->num_lan_msix;
7568         v_budget += pf->num_lan_msix;
7569
7570         /* reserve one vector for sideband flow director */
7571         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7572                 if (vectors_left) {
7573                         pf->num_fdsb_msix = 1;
7574                         v_budget++;
7575                         vectors_left--;
7576                 } else {
7577                         pf->num_fdsb_msix = 0;
7578                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7579                 }
7580         }
7581
7582 #ifdef I40E_FCOE
7583         /* can we reserve enough for FCoE? */
7584         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7585                 if (!vectors_left)
7586                         pf->num_fcoe_msix = 0;
7587                 else if (vectors_left >= pf->num_fcoe_qps)
7588                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7589                 else
7590                         pf->num_fcoe_msix = 1;
7591                 v_budget += pf->num_fcoe_msix;
7592                 vectors_left -= pf->num_fcoe_msix;
7593         }
7594
7595 #endif
7596         /* can we reserve enough for iWARP? */
7597         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7598                 if (!vectors_left)
7599                         pf->num_iwarp_msix = 0;
7600                 else if (vectors_left < pf->num_iwarp_msix)
7601                         pf->num_iwarp_msix = 1;
7602                 v_budget += pf->num_iwarp_msix;
7603                 vectors_left -= pf->num_iwarp_msix;
7604         }
7605
7606         /* any vectors left over go for VMDq support */
7607         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7608                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7609                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7610
7611                 /* if we're short on vectors for what's desired, we limit
7612                  * the queues per vmdq.  If this is still more than are
7613                  * available, the user will need to change the number of
7614                  * queues/vectors used by the PF later with the ethtool
7615                  * channels command
7616                  */
7617                 if (vmdq_vecs < vmdq_vecs_wanted)
7618                         pf->num_vmdq_qps = 1;
7619                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7620
7621                 v_budget += vmdq_vecs;
7622                 vectors_left -= vmdq_vecs;
7623         }
7624
7625         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7626                                    GFP_KERNEL);
7627         if (!pf->msix_entries)
7628                 return -ENOMEM;
7629
7630         for (i = 0; i < v_budget; i++)
7631                 pf->msix_entries[i].entry = i;
7632         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7633
7634         if (v_actual != v_budget) {
7635                 /* If we have limited resources, we will start with no vectors
7636                  * for the special features and then allocate vectors to some
7637                  * of these features based on the policy and at the end disable
7638                  * the features that did not get any vectors.
7639                  */
7640                 iwarp_requested = pf->num_iwarp_msix;
7641                 pf->num_iwarp_msix = 0;
7642 #ifdef I40E_FCOE
7643                 pf->num_fcoe_qps = 0;
7644                 pf->num_fcoe_msix = 0;
7645 #endif
7646                 pf->num_vmdq_msix = 0;
7647         }
7648
7649         if (v_actual < I40E_MIN_MSIX) {
7650                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7651                 kfree(pf->msix_entries);
7652                 pf->msix_entries = NULL;
7653                 return -ENODEV;
7654
7655         } else if (v_actual == I40E_MIN_MSIX) {
7656                 /* Adjust for minimal MSIX use */
7657                 pf->num_vmdq_vsis = 0;
7658                 pf->num_vmdq_qps = 0;
7659                 pf->num_lan_qps = 1;
7660                 pf->num_lan_msix = 1;
7661
7662         } else if (v_actual != v_budget) {
7663                 int vec;
7664
7665                 /* reserve the misc vector */
7666                 vec = v_actual - 1;
7667
7668                 /* Scale vector usage down */
7669                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7670                 pf->num_vmdq_vsis = 1;
7671                 pf->num_vmdq_qps = 1;
7672                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7673
7674                 /* partition out the remaining vectors */
7675                 switch (vec) {
7676                 case 2:
7677                         pf->num_lan_msix = 1;
7678                         break;
7679                 case 3:
7680                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7681                                 pf->num_lan_msix = 1;
7682                                 pf->num_iwarp_msix = 1;
7683                         } else {
7684                                 pf->num_lan_msix = 2;
7685                         }
7686 #ifdef I40E_FCOE
7687                         /* give one vector to FCoE */
7688                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7689                                 pf->num_lan_msix = 1;
7690                                 pf->num_fcoe_msix = 1;
7691                         }
7692 #endif
7693                         break;
7694                 default:
7695                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7696                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7697                                                  iwarp_requested);
7698                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7699                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7700                         } else {
7701                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7702                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7703                         }
7704                         pf->num_lan_msix = min_t(int,
7705                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7706                                                               pf->num_lan_msix);
7707 #ifdef I40E_FCOE
7708                         /* give one vector to FCoE */
7709                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7710                                 pf->num_fcoe_msix = 1;
7711                                 vec--;
7712                         }
7713 #endif
7714                         break;
7715                 }
7716         }
7717
7718         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7719             (pf->num_vmdq_msix == 0)) {
7720                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7721                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7722         }
7723
7724         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7725             (pf->num_iwarp_msix == 0)) {
7726                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7727                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7728         }
7729 #ifdef I40E_FCOE
7730
7731         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7732                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7733                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7734         }
7735 #endif
7736         return v_actual;
7737 }
7738
7739 /**
7740  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7741  * @vsi: the VSI being configured
7742  * @v_idx: index of the vector in the vsi struct
7743  *
7744  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7745  **/
7746 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7747 {
7748         struct i40e_q_vector *q_vector;
7749
7750         /* allocate q_vector */
7751         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7752         if (!q_vector)
7753                 return -ENOMEM;
7754
7755         q_vector->vsi = vsi;
7756         q_vector->v_idx = v_idx;
7757         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7758         if (vsi->netdev)
7759                 netif_napi_add(vsi->netdev, &q_vector->napi,
7760                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7761
7762         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7763         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7764
7765         /* tie q_vector and vsi together */
7766         vsi->q_vectors[v_idx] = q_vector;
7767
7768         return 0;
7769 }
7770
7771 /**
7772  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7773  * @vsi: the VSI being configured
7774  *
7775  * We allocate one q_vector per queue interrupt.  If allocation fails we
7776  * return -ENOMEM.
7777  **/
7778 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7779 {
7780         struct i40e_pf *pf = vsi->back;
7781         int v_idx, num_q_vectors;
7782         int err;
7783
7784         /* if not MSIX, give the one vector only to the LAN VSI */
7785         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7786                 num_q_vectors = vsi->num_q_vectors;
7787         else if (vsi == pf->vsi[pf->lan_vsi])
7788                 num_q_vectors = 1;
7789         else
7790                 return -EINVAL;
7791
7792         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7793                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7794                 if (err)
7795                         goto err_out;
7796         }
7797
7798         return 0;
7799
7800 err_out:
7801         while (v_idx--)
7802                 i40e_free_q_vector(vsi, v_idx);
7803
7804         return err;
7805 }
7806
7807 /**
7808  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7809  * @pf: board private structure to initialize
7810  **/
7811 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7812 {
7813         int vectors = 0;
7814         ssize_t size;
7815
7816         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7817                 vectors = i40e_init_msix(pf);
7818                 if (vectors < 0) {
7819                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7820                                        I40E_FLAG_IWARP_ENABLED  |
7821 #ifdef I40E_FCOE
7822                                        I40E_FLAG_FCOE_ENABLED   |
7823 #endif
7824                                        I40E_FLAG_RSS_ENABLED    |
7825                                        I40E_FLAG_DCB_CAPABLE    |
7826                                        I40E_FLAG_SRIOV_ENABLED  |
7827                                        I40E_FLAG_FD_SB_ENABLED  |
7828                                        I40E_FLAG_FD_ATR_ENABLED |
7829                                        I40E_FLAG_VMDQ_ENABLED);
7830
7831                         /* rework the queue expectations without MSIX */
7832                         i40e_determine_queue_usage(pf);
7833                 }
7834         }
7835
7836         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7837             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7838                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7839                 vectors = pci_enable_msi(pf->pdev);
7840                 if (vectors < 0) {
7841                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7842                                  vectors);
7843                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7844                 }
7845                 vectors = 1;  /* one MSI or Legacy vector */
7846         }
7847
7848         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7849                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7850
7851         /* set up vector assignment tracking */
7852         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7853         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7854         if (!pf->irq_pile) {
7855                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7856                 return -ENOMEM;
7857         }
7858         pf->irq_pile->num_entries = vectors;
7859         pf->irq_pile->search_hint = 0;
7860
7861         /* track first vector for misc interrupts, ignore return */
7862         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7863
7864         return 0;
7865 }
7866
7867 /**
7868  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7869  * @pf: board private structure
7870  *
7871  * This sets up the handler for MSIX 0, which is used to manage the
7872  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7873  * when in MSI or Legacy interrupt mode.
7874  **/
7875 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7876 {
7877         struct i40e_hw *hw = &pf->hw;
7878         int err = 0;
7879
7880         /* Only request the irq if this is the first time through, and
7881          * not when we're rebuilding after a Reset
7882          */
7883         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7884                 err = request_irq(pf->msix_entries[0].vector,
7885                                   i40e_intr, 0, pf->int_name, pf);
7886                 if (err) {
7887                         dev_info(&pf->pdev->dev,
7888                                  "request_irq for %s failed: %d\n",
7889                                  pf->int_name, err);
7890                         return -EFAULT;
7891                 }
7892         }
7893
7894         i40e_enable_misc_int_causes(pf);
7895
7896         /* associate no queues to the misc vector */
7897         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7898         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7899
7900         i40e_flush(hw);
7901
7902         i40e_irq_dynamic_enable_icr0(pf, true);
7903
7904         return err;
7905 }
7906
7907 /**
7908  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7909  * @vsi: vsi structure
7910  * @seed: RSS hash seed
7911  **/
7912 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7913                               u8 *lut, u16 lut_size)
7914 {
7915         struct i40e_aqc_get_set_rss_key_data rss_key;
7916         struct i40e_pf *pf = vsi->back;
7917         struct i40e_hw *hw = &pf->hw;
7918         bool pf_lut = false;
7919         u8 *rss_lut;
7920         int ret, i;
7921
7922         memset(&rss_key, 0, sizeof(rss_key));
7923         memcpy(&rss_key, seed, sizeof(rss_key));
7924
7925         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7926         if (!rss_lut)
7927                 return -ENOMEM;
7928
7929         /* Populate the LUT with max no. of queues in round robin fashion */
7930         for (i = 0; i < vsi->rss_table_size; i++)
7931                 rss_lut[i] = i % vsi->rss_size;
7932
7933         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7934         if (ret) {
7935                 dev_info(&pf->pdev->dev,
7936                          "Cannot set RSS key, err %s aq_err %s\n",
7937                          i40e_stat_str(&pf->hw, ret),
7938                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7939                 goto config_rss_aq_out;
7940         }
7941
7942         if (vsi->type == I40E_VSI_MAIN)
7943                 pf_lut = true;
7944
7945         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7946                                   vsi->rss_table_size);
7947         if (ret)
7948                 dev_info(&pf->pdev->dev,
7949                          "Cannot set RSS lut, err %s aq_err %s\n",
7950                          i40e_stat_str(&pf->hw, ret),
7951                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7952
7953 config_rss_aq_out:
7954         kfree(rss_lut);
7955         return ret;
7956 }
7957
7958 /**
7959  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7960  * @vsi: VSI structure
7961  **/
7962 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7963 {
7964         u8 seed[I40E_HKEY_ARRAY_SIZE];
7965         struct i40e_pf *pf = vsi->back;
7966         u8 *lut;
7967         int ret;
7968
7969         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7970                 return 0;
7971
7972         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7973         if (!lut)
7974                 return -ENOMEM;
7975
7976         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7977         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7978         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7979         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7980         kfree(lut);
7981
7982         return ret;
7983 }
7984
7985 /**
7986  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
7987  * @vsi: Pointer to vsi structure
7988  * @seed: Buffter to store the hash keys
7989  * @lut: Buffer to store the lookup table entries
7990  * @lut_size: Size of buffer to store the lookup table entries
7991  *
7992  * Return 0 on success, negative on failure
7993  */
7994 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7995                            u8 *lut, u16 lut_size)
7996 {
7997         struct i40e_pf *pf = vsi->back;
7998         struct i40e_hw *hw = &pf->hw;
7999         int ret = 0;
8000
8001         if (seed) {
8002                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8003                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8004                 if (ret) {
8005                         dev_info(&pf->pdev->dev,
8006                                  "Cannot get RSS key, err %s aq_err %s\n",
8007                                  i40e_stat_str(&pf->hw, ret),
8008                                  i40e_aq_str(&pf->hw,
8009                                              pf->hw.aq.asq_last_status));
8010                         return ret;
8011                 }
8012         }
8013
8014         if (lut) {
8015                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8016
8017                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8018                 if (ret) {
8019                         dev_info(&pf->pdev->dev,
8020                                  "Cannot get RSS lut, err %s aq_err %s\n",
8021                                  i40e_stat_str(&pf->hw, ret),
8022                                  i40e_aq_str(&pf->hw,
8023                                              pf->hw.aq.asq_last_status));
8024                         return ret;
8025                 }
8026         }
8027
8028         return ret;
8029 }
8030
8031 /**
8032  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8033  * @vsi: Pointer to vsi structure
8034  * @seed: RSS hash seed
8035  * @lut: Lookup table
8036  * @lut_size: Lookup table size
8037  *
8038  * Returns 0 on success, negative on failure
8039  **/
8040 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8041                                const u8 *lut, u16 lut_size)
8042 {
8043         struct i40e_pf *pf = vsi->back;
8044         struct i40e_hw *hw = &pf->hw;
8045         u16 vf_id = vsi->vf_id;
8046         u8 i;
8047
8048         /* Fill out hash function seed */
8049         if (seed) {
8050                 u32 *seed_dw = (u32 *)seed;
8051
8052                 if (vsi->type == I40E_VSI_MAIN) {
8053                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8054                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8055                                                   seed_dw[i]);
8056                 } else if (vsi->type == I40E_VSI_SRIOV) {
8057                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8058                                 i40e_write_rx_ctl(hw,
8059                                                   I40E_VFQF_HKEY1(i, vf_id),
8060                                                   seed_dw[i]);
8061                 } else {
8062                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8063                 }
8064         }
8065
8066         if (lut) {
8067                 u32 *lut_dw = (u32 *)lut;
8068
8069                 if (vsi->type == I40E_VSI_MAIN) {
8070                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8071                                 return -EINVAL;
8072                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8073                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8074                 } else if (vsi->type == I40E_VSI_SRIOV) {
8075                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8076                                 return -EINVAL;
8077                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8078                                 i40e_write_rx_ctl(hw,
8079                                                   I40E_VFQF_HLUT1(i, vf_id),
8080                                                   lut_dw[i]);
8081                 } else {
8082                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8083                 }
8084         }
8085         i40e_flush(hw);
8086
8087         return 0;
8088 }
8089
8090 /**
8091  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8092  * @vsi: Pointer to VSI structure
8093  * @seed: Buffer to store the keys
8094  * @lut: Buffer to store the lookup table entries
8095  * @lut_size: Size of buffer to store the lookup table entries
8096  *
8097  * Returns 0 on success, negative on failure
8098  */
8099 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8100                             u8 *lut, u16 lut_size)
8101 {
8102         struct i40e_pf *pf = vsi->back;
8103         struct i40e_hw *hw = &pf->hw;
8104         u16 i;
8105
8106         if (seed) {
8107                 u32 *seed_dw = (u32 *)seed;
8108
8109                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8110                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8111         }
8112         if (lut) {
8113                 u32 *lut_dw = (u32 *)lut;
8114
8115                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8116                         return -EINVAL;
8117                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8118                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8119         }
8120
8121         return 0;
8122 }
8123
8124 /**
8125  * i40e_config_rss - Configure RSS keys and lut
8126  * @vsi: Pointer to VSI structure
8127  * @seed: RSS hash seed
8128  * @lut: Lookup table
8129  * @lut_size: Lookup table size
8130  *
8131  * Returns 0 on success, negative on failure
8132  */
8133 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8134 {
8135         struct i40e_pf *pf = vsi->back;
8136
8137         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8138                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8139         else
8140                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8141 }
8142
8143 /**
8144  * i40e_get_rss - Get RSS keys and lut
8145  * @vsi: Pointer to VSI structure
8146  * @seed: Buffer to store the keys
8147  * @lut: Buffer to store the lookup table entries
8148  * lut_size: Size of buffer to store the lookup table entries
8149  *
8150  * Returns 0 on success, negative on failure
8151  */
8152 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8153 {
8154         struct i40e_pf *pf = vsi->back;
8155
8156         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8157                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8158         else
8159                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8160 }
8161
8162 /**
8163  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8164  * @pf: Pointer to board private structure
8165  * @lut: Lookup table
8166  * @rss_table_size: Lookup table size
8167  * @rss_size: Range of queue number for hashing
8168  */
8169 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8170                               u16 rss_table_size, u16 rss_size)
8171 {
8172         u16 i;
8173
8174         for (i = 0; i < rss_table_size; i++)
8175                 lut[i] = i % rss_size;
8176 }
8177
8178 /**
8179  * i40e_pf_config_rss - Prepare for RSS if used
8180  * @pf: board private structure
8181  **/
8182 static int i40e_pf_config_rss(struct i40e_pf *pf)
8183 {
8184         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8185         u8 seed[I40E_HKEY_ARRAY_SIZE];
8186         u8 *lut;
8187         struct i40e_hw *hw = &pf->hw;
8188         u32 reg_val;
8189         u64 hena;
8190         int ret;
8191
8192         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8193         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8194                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8195         hena |= i40e_pf_get_default_rss_hena(pf);
8196
8197         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8198         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8199
8200         /* Determine the RSS table size based on the hardware capabilities */
8201         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8202         reg_val = (pf->rss_table_size == 512) ?
8203                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8204                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8205         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8206
8207         /* Determine the RSS size of the VSI */
8208         if (!vsi->rss_size)
8209                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8210                                       vsi->num_queue_pairs);
8211
8212         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8213         if (!lut)
8214                 return -ENOMEM;
8215
8216         /* Use user configured lut if there is one, otherwise use default */
8217         if (vsi->rss_lut_user)
8218                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8219         else
8220                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8221
8222         /* Use user configured hash key if there is one, otherwise
8223          * use default.
8224          */
8225         if (vsi->rss_hkey_user)
8226                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8227         else
8228                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8229         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8230         kfree(lut);
8231
8232         return ret;
8233 }
8234
8235 /**
8236  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8237  * @pf: board private structure
8238  * @queue_count: the requested queue count for rss.
8239  *
8240  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8241  * count which may be different from the requested queue count.
8242  **/
8243 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8244 {
8245         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8246         int new_rss_size;
8247
8248         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8249                 return 0;
8250
8251         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8252
8253         if (queue_count != vsi->num_queue_pairs) {
8254                 vsi->req_queue_pairs = queue_count;
8255                 i40e_prep_for_reset(pf);
8256
8257                 pf->alloc_rss_size = new_rss_size;
8258
8259                 i40e_reset_and_rebuild(pf, true);
8260
8261                 /* Discard the user configured hash keys and lut, if less
8262                  * queues are enabled.
8263                  */
8264                 if (queue_count < vsi->rss_size) {
8265                         i40e_clear_rss_config_user(vsi);
8266                         dev_dbg(&pf->pdev->dev,
8267                                 "discard user configured hash keys and lut\n");
8268                 }
8269
8270                 /* Reset vsi->rss_size, as number of enabled queues changed */
8271                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8272                                       vsi->num_queue_pairs);
8273
8274                 i40e_pf_config_rss(pf);
8275         }
8276         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8277                  pf->alloc_rss_size, pf->rss_size_max);
8278         return pf->alloc_rss_size;
8279 }
8280
8281 /**
8282  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8283  * @pf: board private structure
8284  **/
8285 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8286 {
8287         i40e_status status;
8288         bool min_valid, max_valid;
8289         u32 max_bw, min_bw;
8290
8291         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8292                                            &min_valid, &max_valid);
8293
8294         if (!status) {
8295                 if (min_valid)
8296                         pf->npar_min_bw = min_bw;
8297                 if (max_valid)
8298                         pf->npar_max_bw = max_bw;
8299         }
8300
8301         return status;
8302 }
8303
8304 /**
8305  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8306  * @pf: board private structure
8307  **/
8308 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8309 {
8310         struct i40e_aqc_configure_partition_bw_data bw_data;
8311         i40e_status status;
8312
8313         /* Set the valid bit for this PF */
8314         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8315         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8316         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8317
8318         /* Set the new bandwidths */
8319         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8320
8321         return status;
8322 }
8323
8324 /**
8325  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8326  * @pf: board private structure
8327  **/
8328 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8329 {
8330         /* Commit temporary BW setting to permanent NVM image */
8331         enum i40e_admin_queue_err last_aq_status;
8332         i40e_status ret;
8333         u16 nvm_word;
8334
8335         if (pf->hw.partition_id != 1) {
8336                 dev_info(&pf->pdev->dev,
8337                          "Commit BW only works on partition 1! This is partition %d",
8338                          pf->hw.partition_id);
8339                 ret = I40E_NOT_SUPPORTED;
8340                 goto bw_commit_out;
8341         }
8342
8343         /* Acquire NVM for read access */
8344         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8345         last_aq_status = pf->hw.aq.asq_last_status;
8346         if (ret) {
8347                 dev_info(&pf->pdev->dev,
8348                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8349                          i40e_stat_str(&pf->hw, ret),
8350                          i40e_aq_str(&pf->hw, last_aq_status));
8351                 goto bw_commit_out;
8352         }
8353
8354         /* Read word 0x10 of NVM - SW compatibility word 1 */
8355         ret = i40e_aq_read_nvm(&pf->hw,
8356                                I40E_SR_NVM_CONTROL_WORD,
8357                                0x10, sizeof(nvm_word), &nvm_word,
8358                                false, NULL);
8359         /* Save off last admin queue command status before releasing
8360          * the NVM
8361          */
8362         last_aq_status = pf->hw.aq.asq_last_status;
8363         i40e_release_nvm(&pf->hw);
8364         if (ret) {
8365                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8366                          i40e_stat_str(&pf->hw, ret),
8367                          i40e_aq_str(&pf->hw, last_aq_status));
8368                 goto bw_commit_out;
8369         }
8370
8371         /* Wait a bit for NVM release to complete */
8372         msleep(50);
8373
8374         /* Acquire NVM for write access */
8375         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8376         last_aq_status = pf->hw.aq.asq_last_status;
8377         if (ret) {
8378                 dev_info(&pf->pdev->dev,
8379                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8380                          i40e_stat_str(&pf->hw, ret),
8381                          i40e_aq_str(&pf->hw, last_aq_status));
8382                 goto bw_commit_out;
8383         }
8384         /* Write it back out unchanged to initiate update NVM,
8385          * which will force a write of the shadow (alt) RAM to
8386          * the NVM - thus storing the bandwidth values permanently.
8387          */
8388         ret = i40e_aq_update_nvm(&pf->hw,
8389                                  I40E_SR_NVM_CONTROL_WORD,
8390                                  0x10, sizeof(nvm_word),
8391                                  &nvm_word, true, NULL);
8392         /* Save off last admin queue command status before releasing
8393          * the NVM
8394          */
8395         last_aq_status = pf->hw.aq.asq_last_status;
8396         i40e_release_nvm(&pf->hw);
8397         if (ret)
8398                 dev_info(&pf->pdev->dev,
8399                          "BW settings NOT SAVED, err %s aq_err %s\n",
8400                          i40e_stat_str(&pf->hw, ret),
8401                          i40e_aq_str(&pf->hw, last_aq_status));
8402 bw_commit_out:
8403
8404         return ret;
8405 }
8406
8407 /**
8408  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8409  * @pf: board private structure to initialize
8410  *
8411  * i40e_sw_init initializes the Adapter private data structure.
8412  * Fields are initialized based on PCI device information and
8413  * OS network device settings (MTU size).
8414  **/
8415 static int i40e_sw_init(struct i40e_pf *pf)
8416 {
8417         int err = 0;
8418         int size;
8419
8420         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8421                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8422         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8423                 if (I40E_DEBUG_USER & debug)
8424                         pf->hw.debug_mask = debug;
8425                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8426                                                 I40E_DEFAULT_MSG_ENABLE);
8427         }
8428
8429         /* Set default capability flags */
8430         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8431                     I40E_FLAG_MSI_ENABLED     |
8432                     I40E_FLAG_MSIX_ENABLED;
8433
8434         /* Set default ITR */
8435         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8436         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8437
8438         /* Depending on PF configurations, it is possible that the RSS
8439          * maximum might end up larger than the available queues
8440          */
8441         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8442         pf->alloc_rss_size = 1;
8443         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8444         pf->rss_size_max = min_t(int, pf->rss_size_max,
8445                                  pf->hw.func_caps.num_tx_qp);
8446         if (pf->hw.func_caps.rss) {
8447                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8448                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8449                                            num_online_cpus());
8450         }
8451
8452         /* MFP mode enabled */
8453         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8454                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8455                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8456                 if (i40e_get_npar_bw_setting(pf))
8457                         dev_warn(&pf->pdev->dev,
8458                                  "Could not get NPAR bw settings\n");
8459                 else
8460                         dev_info(&pf->pdev->dev,
8461                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8462                                  pf->npar_min_bw, pf->npar_max_bw);
8463         }
8464
8465         /* FW/NVM is not yet fixed in this regard */
8466         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8467             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8468                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8469                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8470                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8471                     pf->hw.num_partitions > 1)
8472                         dev_info(&pf->pdev->dev,
8473                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8474                 else
8475                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8476                 pf->fdir_pf_filter_count =
8477                                  pf->hw.func_caps.fd_filters_guaranteed;
8478                 pf->hw.fdir_shared_filter_count =
8479                                  pf->hw.func_caps.fd_filters_best_effort;
8480         }
8481
8482         if (i40e_is_mac_710(&pf->hw) &&
8483             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8484             (pf->hw.aq.fw_maj_ver < 4))) {
8485                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8486                 /* No DCB support  for FW < v4.33 */
8487                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8488         }
8489
8490         /* Disable FW LLDP if FW < v4.3 */
8491         if (i40e_is_mac_710(&pf->hw) &&
8492             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8493             (pf->hw.aq.fw_maj_ver < 4)))
8494                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8495
8496         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8497         if (i40e_is_mac_710(&pf->hw) &&
8498             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8499             (pf->hw.aq.fw_maj_ver >= 5)))
8500                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8501
8502         if (pf->hw.func_caps.vmdq) {
8503                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8504                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8505                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8506         }
8507
8508         if (pf->hw.func_caps.iwarp) {
8509                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8510                 /* IWARP needs one extra vector for CQP just like MISC.*/
8511                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8512         }
8513
8514 #ifdef I40E_FCOE
8515         i40e_init_pf_fcoe(pf);
8516
8517 #endif /* I40E_FCOE */
8518 #ifdef CONFIG_PCI_IOV
8519         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8520                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8521                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8522                 pf->num_req_vfs = min_t(int,
8523                                         pf->hw.func_caps.num_vfs,
8524                                         I40E_MAX_VF_COUNT);
8525         }
8526 #endif /* CONFIG_PCI_IOV */
8527         if (pf->hw.mac.type == I40E_MAC_X722) {
8528                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8529                              I40E_FLAG_128_QP_RSS_CAPABLE |
8530                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8531                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8532                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8533                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8534                              I40E_FLAG_NO_PCI_LINK_CHECK |
8535                              I40E_FLAG_100M_SGMII_CAPABLE |
8536                              I40E_FLAG_USE_SET_LLDP_MIB |
8537                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8538         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8539                    ((pf->hw.aq.api_maj_ver == 1) &&
8540                     (pf->hw.aq.api_min_ver > 4))) {
8541                 /* Supported in FW API version higher than 1.4 */
8542                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8543                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8544         } else {
8545                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8546         }
8547
8548         pf->eeprom_version = 0xDEAD;
8549         pf->lan_veb = I40E_NO_VEB;
8550         pf->lan_vsi = I40E_NO_VSI;
8551
8552         /* By default FW has this off for performance reasons */
8553         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8554
8555         /* set up queue assignment tracking */
8556         size = sizeof(struct i40e_lump_tracking)
8557                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8558         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8559         if (!pf->qp_pile) {
8560                 err = -ENOMEM;
8561                 goto sw_init_done;
8562         }
8563         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8564         pf->qp_pile->search_hint = 0;
8565
8566         pf->tx_timeout_recovery_level = 1;
8567
8568         mutex_init(&pf->switch_mutex);
8569
8570         /* If NPAR is enabled nudge the Tx scheduler */
8571         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8572                 i40e_set_npar_bw_setting(pf);
8573
8574 sw_init_done:
8575         return err;
8576 }
8577
8578 /**
8579  * i40e_set_ntuple - set the ntuple feature flag and take action
8580  * @pf: board private structure to initialize
8581  * @features: the feature set that the stack is suggesting
8582  *
8583  * returns a bool to indicate if reset needs to happen
8584  **/
8585 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8586 {
8587         bool need_reset = false;
8588
8589         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8590          * the state changed, we need to reset.
8591          */
8592         if (features & NETIF_F_NTUPLE) {
8593                 /* Enable filters and mark for reset */
8594                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8595                         need_reset = true;
8596                 /* enable FD_SB only if there is MSI-X vector */
8597                 if (pf->num_fdsb_msix > 0)
8598                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8599         } else {
8600                 /* turn off filters, mark for reset and clear SW filter list */
8601                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8602                         need_reset = true;
8603                         i40e_fdir_filter_exit(pf);
8604                 }
8605                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8606                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8607                 /* reset fd counters */
8608                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8609                 pf->fdir_pf_active_filters = 0;
8610                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8611                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8612                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8613                 /* if ATR was auto disabled it can be re-enabled. */
8614                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8615                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8616                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8617         }
8618         return need_reset;
8619 }
8620
8621 /**
8622  * i40e_set_features - set the netdev feature flags
8623  * @netdev: ptr to the netdev being adjusted
8624  * @features: the feature set that the stack is suggesting
8625  **/
8626 static int i40e_set_features(struct net_device *netdev,
8627                              netdev_features_t features)
8628 {
8629         struct i40e_netdev_priv *np = netdev_priv(netdev);
8630         struct i40e_vsi *vsi = np->vsi;
8631         struct i40e_pf *pf = vsi->back;
8632         bool need_reset;
8633
8634         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8635                 i40e_vlan_stripping_enable(vsi);
8636         else
8637                 i40e_vlan_stripping_disable(vsi);
8638
8639         need_reset = i40e_set_ntuple(pf, features);
8640
8641         if (need_reset)
8642                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8643
8644         return 0;
8645 }
8646
8647 /**
8648  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8649  * @pf: board private structure
8650  * @port: The UDP port to look up
8651  *
8652  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8653  **/
8654 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8655 {
8656         u8 i;
8657
8658         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8659                 if (pf->udp_ports[i].index == port)
8660                         return i;
8661         }
8662
8663         return i;
8664 }
8665
8666 /**
8667  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8668  * @netdev: This physical port's netdev
8669  * @ti: Tunnel endpoint information
8670  **/
8671 static void i40e_udp_tunnel_add(struct net_device *netdev,
8672                                 struct udp_tunnel_info *ti)
8673 {
8674         struct i40e_netdev_priv *np = netdev_priv(netdev);
8675         struct i40e_vsi *vsi = np->vsi;
8676         struct i40e_pf *pf = vsi->back;
8677         __be16 port = ti->port;
8678         u8 next_idx;
8679         u8 idx;
8680
8681         idx = i40e_get_udp_port_idx(pf, port);
8682
8683         /* Check if port already exists */
8684         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8685                 netdev_info(netdev, "port %d already offloaded\n",
8686                             ntohs(port));
8687                 return;
8688         }
8689
8690         /* Now check if there is space to add the new port */
8691         next_idx = i40e_get_udp_port_idx(pf, 0);
8692
8693         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8694                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8695                             ntohs(port));
8696                 return;
8697         }
8698
8699         switch (ti->type) {
8700         case UDP_TUNNEL_TYPE_VXLAN:
8701                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8702                 break;
8703         case UDP_TUNNEL_TYPE_GENEVE:
8704                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8705                         return;
8706                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8707                 break;
8708         default:
8709                 return;
8710         }
8711
8712         /* New port: add it and mark its index in the bitmap */
8713         pf->udp_ports[next_idx].index = port;
8714         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8715         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8716 }
8717
8718 /**
8719  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8720  * @netdev: This physical port's netdev
8721  * @ti: Tunnel endpoint information
8722  **/
8723 static void i40e_udp_tunnel_del(struct net_device *netdev,
8724                                 struct udp_tunnel_info *ti)
8725 {
8726         struct i40e_netdev_priv *np = netdev_priv(netdev);
8727         struct i40e_vsi *vsi = np->vsi;
8728         struct i40e_pf *pf = vsi->back;
8729         __be16 port = ti->port;
8730         u8 idx;
8731
8732         idx = i40e_get_udp_port_idx(pf, port);
8733
8734         /* Check if port already exists */
8735         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8736                 goto not_found;
8737
8738         switch (ti->type) {
8739         case UDP_TUNNEL_TYPE_VXLAN:
8740                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8741                         goto not_found;
8742                 break;
8743         case UDP_TUNNEL_TYPE_GENEVE:
8744                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8745                         goto not_found;
8746                 break;
8747         default:
8748                 goto not_found;
8749         }
8750
8751         /* if port exists, set it to 0 (mark for deletion)
8752          * and make it pending
8753          */
8754         pf->udp_ports[idx].index = 0;
8755         pf->pending_udp_bitmap |= BIT_ULL(idx);
8756         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8757
8758         return;
8759 not_found:
8760         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8761                     ntohs(port));
8762 }
8763
8764 static int i40e_get_phys_port_id(struct net_device *netdev,
8765                                  struct netdev_phys_item_id *ppid)
8766 {
8767         struct i40e_netdev_priv *np = netdev_priv(netdev);
8768         struct i40e_pf *pf = np->vsi->back;
8769         struct i40e_hw *hw = &pf->hw;
8770
8771         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8772                 return -EOPNOTSUPP;
8773
8774         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8775         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8776
8777         return 0;
8778 }
8779
8780 /**
8781  * i40e_ndo_fdb_add - add an entry to the hardware database
8782  * @ndm: the input from the stack
8783  * @tb: pointer to array of nladdr (unused)
8784  * @dev: the net device pointer
8785  * @addr: the MAC address entry being added
8786  * @flags: instructions from stack about fdb operation
8787  */
8788 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8789                             struct net_device *dev,
8790                             const unsigned char *addr, u16 vid,
8791                             u16 flags)
8792 {
8793         struct i40e_netdev_priv *np = netdev_priv(dev);
8794         struct i40e_pf *pf = np->vsi->back;
8795         int err = 0;
8796
8797         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8798                 return -EOPNOTSUPP;
8799
8800         if (vid) {
8801                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8802                 return -EINVAL;
8803         }
8804
8805         /* Hardware does not support aging addresses so if a
8806          * ndm_state is given only allow permanent addresses
8807          */
8808         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8809                 netdev_info(dev, "FDB only supports static addresses\n");
8810                 return -EINVAL;
8811         }
8812
8813         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8814                 err = dev_uc_add_excl(dev, addr);
8815         else if (is_multicast_ether_addr(addr))
8816                 err = dev_mc_add_excl(dev, addr);
8817         else
8818                 err = -EINVAL;
8819
8820         /* Only return duplicate errors if NLM_F_EXCL is set */
8821         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8822                 err = 0;
8823
8824         return err;
8825 }
8826
8827 /**
8828  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8829  * @dev: the netdev being configured
8830  * @nlh: RTNL message
8831  *
8832  * Inserts a new hardware bridge if not already created and
8833  * enables the bridging mode requested (VEB or VEPA). If the
8834  * hardware bridge has already been inserted and the request
8835  * is to change the mode then that requires a PF reset to
8836  * allow rebuild of the components with required hardware
8837  * bridge mode enabled.
8838  **/
8839 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8840                                    struct nlmsghdr *nlh,
8841                                    u16 flags)
8842 {
8843         struct i40e_netdev_priv *np = netdev_priv(dev);
8844         struct i40e_vsi *vsi = np->vsi;
8845         struct i40e_pf *pf = vsi->back;
8846         struct i40e_veb *veb = NULL;
8847         struct nlattr *attr, *br_spec;
8848         int i, rem;
8849
8850         /* Only for PF VSI for now */
8851         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8852                 return -EOPNOTSUPP;
8853
8854         /* Find the HW bridge for PF VSI */
8855         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8856                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8857                         veb = pf->veb[i];
8858         }
8859
8860         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8861
8862         nla_for_each_nested(attr, br_spec, rem) {
8863                 __u16 mode;
8864
8865                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8866                         continue;
8867
8868                 mode = nla_get_u16(attr);
8869                 if ((mode != BRIDGE_MODE_VEPA) &&
8870                     (mode != BRIDGE_MODE_VEB))
8871                         return -EINVAL;
8872
8873                 /* Insert a new HW bridge */
8874                 if (!veb) {
8875                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8876                                              vsi->tc_config.enabled_tc);
8877                         if (veb) {
8878                                 veb->bridge_mode = mode;
8879                                 i40e_config_bridge_mode(veb);
8880                         } else {
8881                                 /* No Bridge HW offload available */
8882                                 return -ENOENT;
8883                         }
8884                         break;
8885                 } else if (mode != veb->bridge_mode) {
8886                         /* Existing HW bridge but different mode needs reset */
8887                         veb->bridge_mode = mode;
8888                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8889                         if (mode == BRIDGE_MODE_VEB)
8890                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8891                         else
8892                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8893                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8894                         break;
8895                 }
8896         }
8897
8898         return 0;
8899 }
8900
8901 /**
8902  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8903  * @skb: skb buff
8904  * @pid: process id
8905  * @seq: RTNL message seq #
8906  * @dev: the netdev being configured
8907  * @filter_mask: unused
8908  * @nlflags: netlink flags passed in
8909  *
8910  * Return the mode in which the hardware bridge is operating in
8911  * i.e VEB or VEPA.
8912  **/
8913 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8914                                    struct net_device *dev,
8915                                    u32 __always_unused filter_mask,
8916                                    int nlflags)
8917 {
8918         struct i40e_netdev_priv *np = netdev_priv(dev);
8919         struct i40e_vsi *vsi = np->vsi;
8920         struct i40e_pf *pf = vsi->back;
8921         struct i40e_veb *veb = NULL;
8922         int i;
8923
8924         /* Only for PF VSI for now */
8925         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8926                 return -EOPNOTSUPP;
8927
8928         /* Find the HW bridge for the PF VSI */
8929         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8930                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8931                         veb = pf->veb[i];
8932         }
8933
8934         if (!veb)
8935                 return 0;
8936
8937         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8938                                        nlflags, 0, 0, filter_mask, NULL);
8939 }
8940
8941 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8942  * inner mac plus all inner ethertypes.
8943  */
8944 #define I40E_MAX_TUNNEL_HDR_LEN 128
8945 /**
8946  * i40e_features_check - Validate encapsulated packet conforms to limits
8947  * @skb: skb buff
8948  * @dev: This physical port's netdev
8949  * @features: Offload features that the stack believes apply
8950  **/
8951 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8952                                              struct net_device *dev,
8953                                              netdev_features_t features)
8954 {
8955         if (skb->encapsulation &&
8956             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
8957              I40E_MAX_TUNNEL_HDR_LEN))
8958                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8959
8960         return features;
8961 }
8962
8963 static const struct net_device_ops i40e_netdev_ops = {
8964         .ndo_open               = i40e_open,
8965         .ndo_stop               = i40e_close,
8966         .ndo_start_xmit         = i40e_lan_xmit_frame,
8967         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8968         .ndo_set_rx_mode        = i40e_set_rx_mode,
8969         .ndo_validate_addr      = eth_validate_addr,
8970         .ndo_set_mac_address    = i40e_set_mac,
8971         .ndo_change_mtu         = i40e_change_mtu,
8972         .ndo_do_ioctl           = i40e_ioctl,
8973         .ndo_tx_timeout         = i40e_tx_timeout,
8974         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8975         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8976 #ifdef CONFIG_NET_POLL_CONTROLLER
8977         .ndo_poll_controller    = i40e_netpoll,
8978 #endif
8979         .ndo_setup_tc           = __i40e_setup_tc,
8980 #ifdef I40E_FCOE
8981         .ndo_fcoe_enable        = i40e_fcoe_enable,
8982         .ndo_fcoe_disable       = i40e_fcoe_disable,
8983 #endif
8984         .ndo_set_features       = i40e_set_features,
8985         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8986         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8987         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8988         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8989         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8990         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8991         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
8992         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
8993         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
8994         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8995         .ndo_fdb_add            = i40e_ndo_fdb_add,
8996         .ndo_features_check     = i40e_features_check,
8997         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8998         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8999 };
9000
9001 /**
9002  * i40e_config_netdev - Setup the netdev flags
9003  * @vsi: the VSI being configured
9004  *
9005  * Returns 0 on success, negative value on failure
9006  **/
9007 static int i40e_config_netdev(struct i40e_vsi *vsi)
9008 {
9009         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
9010         struct i40e_pf *pf = vsi->back;
9011         struct i40e_hw *hw = &pf->hw;
9012         struct i40e_netdev_priv *np;
9013         struct net_device *netdev;
9014         u8 mac_addr[ETH_ALEN];
9015         int etherdev_size;
9016
9017         etherdev_size = sizeof(struct i40e_netdev_priv);
9018         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9019         if (!netdev)
9020                 return -ENOMEM;
9021
9022         vsi->netdev = netdev;
9023         np = netdev_priv(netdev);
9024         np->vsi = vsi;
9025
9026         netdev->hw_enc_features |= NETIF_F_SG                   |
9027                                    NETIF_F_IP_CSUM              |
9028                                    NETIF_F_IPV6_CSUM            |
9029                                    NETIF_F_HIGHDMA              |
9030                                    NETIF_F_SOFT_FEATURES        |
9031                                    NETIF_F_TSO                  |
9032                                    NETIF_F_TSO_ECN              |
9033                                    NETIF_F_TSO6                 |
9034                                    NETIF_F_GSO_GRE              |
9035                                    NETIF_F_GSO_GRE_CSUM         |
9036                                    NETIF_F_GSO_IPXIP4           |
9037                                    NETIF_F_GSO_IPXIP6           |
9038                                    NETIF_F_GSO_UDP_TUNNEL       |
9039                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9040                                    NETIF_F_GSO_PARTIAL          |
9041                                    NETIF_F_SCTP_CRC             |
9042                                    NETIF_F_RXHASH               |
9043                                    NETIF_F_RXCSUM               |
9044                                    0;
9045
9046         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9047                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9048
9049         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9050
9051         /* record features VLANs can make use of */
9052         netdev->vlan_features |= netdev->hw_enc_features |
9053                                  NETIF_F_TSO_MANGLEID;
9054
9055         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9056                 netdev->hw_features |= NETIF_F_NTUPLE;
9057
9058         netdev->hw_features |= netdev->hw_enc_features  |
9059                                NETIF_F_HW_VLAN_CTAG_TX  |
9060                                NETIF_F_HW_VLAN_CTAG_RX;
9061
9062         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9063         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9064
9065         if (vsi->type == I40E_VSI_MAIN) {
9066                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9067                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9068                 /* The following steps are necessary to prevent reception
9069                  * of tagged packets - some older NVM configurations load a
9070                  * default a MAC-VLAN filter that accepts any tagged packet
9071                  * which must be replaced by a normal filter.
9072                  */
9073                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9074                         spin_lock_bh(&vsi->mac_filter_list_lock);
9075                         i40e_add_filter(vsi, mac_addr,
9076                                         I40E_VLAN_ANY, false, true);
9077                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9078                 }
9079         } else if ((pf->hw.aq.api_maj_ver > 1) ||
9080                    ((pf->hw.aq.api_maj_ver == 1) &&
9081                     (pf->hw.aq.api_min_ver > 4))) {
9082                 /* Supported in FW API version higher than 1.4 */
9083                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
9084                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
9085         } else {
9086                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9087                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9088                          pf->vsi[pf->lan_vsi]->netdev->name);
9089                 random_ether_addr(mac_addr);
9090
9091                 spin_lock_bh(&vsi->mac_filter_list_lock);
9092                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9093                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9094         }
9095
9096         spin_lock_bh(&vsi->mac_filter_list_lock);
9097         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9098         spin_unlock_bh(&vsi->mac_filter_list_lock);
9099
9100         ether_addr_copy(netdev->dev_addr, mac_addr);
9101         ether_addr_copy(netdev->perm_addr, mac_addr);
9102
9103         netdev->priv_flags |= IFF_UNICAST_FLT;
9104         netdev->priv_flags |= IFF_SUPP_NOFCS;
9105         /* Setup netdev TC information */
9106         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9107
9108         netdev->netdev_ops = &i40e_netdev_ops;
9109         netdev->watchdog_timeo = 5 * HZ;
9110         i40e_set_ethtool_ops(netdev);
9111 #ifdef I40E_FCOE
9112         i40e_fcoe_config_netdev(netdev, vsi);
9113 #endif
9114
9115         return 0;
9116 }
9117
9118 /**
9119  * i40e_vsi_delete - Delete a VSI from the switch
9120  * @vsi: the VSI being removed
9121  *
9122  * Returns 0 on success, negative value on failure
9123  **/
9124 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9125 {
9126         /* remove default VSI is not allowed */
9127         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9128                 return;
9129
9130         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9131 }
9132
9133 /**
9134  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9135  * @vsi: the VSI being queried
9136  *
9137  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9138  **/
9139 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9140 {
9141         struct i40e_veb *veb;
9142         struct i40e_pf *pf = vsi->back;
9143
9144         /* Uplink is not a bridge so default to VEB */
9145         if (vsi->veb_idx == I40E_NO_VEB)
9146                 return 1;
9147
9148         veb = pf->veb[vsi->veb_idx];
9149         if (!veb) {
9150                 dev_info(&pf->pdev->dev,
9151                          "There is no veb associated with the bridge\n");
9152                 return -ENOENT;
9153         }
9154
9155         /* Uplink is a bridge in VEPA mode */
9156         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9157                 return 0;
9158         } else {
9159                 /* Uplink is a bridge in VEB mode */
9160                 return 1;
9161         }
9162
9163         /* VEPA is now default bridge, so return 0 */
9164         return 0;
9165 }
9166
9167 /**
9168  * i40e_add_vsi - Add a VSI to the switch
9169  * @vsi: the VSI being configured
9170  *
9171  * This initializes a VSI context depending on the VSI type to be added and
9172  * passes it down to the add_vsi aq command.
9173  **/
9174 static int i40e_add_vsi(struct i40e_vsi *vsi)
9175 {
9176         int ret = -ENODEV;
9177         u8 laa_macaddr[ETH_ALEN];
9178         bool found_laa_mac_filter = false;
9179         struct i40e_pf *pf = vsi->back;
9180         struct i40e_hw *hw = &pf->hw;
9181         struct i40e_vsi_context ctxt;
9182         struct i40e_mac_filter *f, *ftmp;
9183
9184         u8 enabled_tc = 0x1; /* TC0 enabled */
9185         int f_count = 0;
9186
9187         memset(&ctxt, 0, sizeof(ctxt));
9188         switch (vsi->type) {
9189         case I40E_VSI_MAIN:
9190                 /* The PF's main VSI is already setup as part of the
9191                  * device initialization, so we'll not bother with
9192                  * the add_vsi call, but we will retrieve the current
9193                  * VSI context.
9194                  */
9195                 ctxt.seid = pf->main_vsi_seid;
9196                 ctxt.pf_num = pf->hw.pf_id;
9197                 ctxt.vf_num = 0;
9198                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9199                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9200                 if (ret) {
9201                         dev_info(&pf->pdev->dev,
9202                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9203                                  i40e_stat_str(&pf->hw, ret),
9204                                  i40e_aq_str(&pf->hw,
9205                                              pf->hw.aq.asq_last_status));
9206                         return -ENOENT;
9207                 }
9208                 vsi->info = ctxt.info;
9209                 vsi->info.valid_sections = 0;
9210
9211                 vsi->seid = ctxt.seid;
9212                 vsi->id = ctxt.vsi_number;
9213
9214                 enabled_tc = i40e_pf_get_tc_map(pf);
9215
9216                 /* MFP mode setup queue map and update VSI */
9217                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9218                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9219                         memset(&ctxt, 0, sizeof(ctxt));
9220                         ctxt.seid = pf->main_vsi_seid;
9221                         ctxt.pf_num = pf->hw.pf_id;
9222                         ctxt.vf_num = 0;
9223                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9224                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9225                         if (ret) {
9226                                 dev_info(&pf->pdev->dev,
9227                                          "update vsi failed, err %s aq_err %s\n",
9228                                          i40e_stat_str(&pf->hw, ret),
9229                                          i40e_aq_str(&pf->hw,
9230                                                     pf->hw.aq.asq_last_status));
9231                                 ret = -ENOENT;
9232                                 goto err;
9233                         }
9234                         /* update the local VSI info queue map */
9235                         i40e_vsi_update_queue_map(vsi, &ctxt);
9236                         vsi->info.valid_sections = 0;
9237                 } else {
9238                         /* Default/Main VSI is only enabled for TC0
9239                          * reconfigure it to enable all TCs that are
9240                          * available on the port in SFP mode.
9241                          * For MFP case the iSCSI PF would use this
9242                          * flow to enable LAN+iSCSI TC.
9243                          */
9244                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9245                         if (ret) {
9246                                 dev_info(&pf->pdev->dev,
9247                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9248                                          enabled_tc,
9249                                          i40e_stat_str(&pf->hw, ret),
9250                                          i40e_aq_str(&pf->hw,
9251                                                     pf->hw.aq.asq_last_status));
9252                                 ret = -ENOENT;
9253                         }
9254                 }
9255                 break;
9256
9257         case I40E_VSI_FDIR:
9258                 ctxt.pf_num = hw->pf_id;
9259                 ctxt.vf_num = 0;
9260                 ctxt.uplink_seid = vsi->uplink_seid;
9261                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9262                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9263                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9264                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9265                         ctxt.info.valid_sections |=
9266                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9267                         ctxt.info.switch_id =
9268                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9269                 }
9270                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9271                 break;
9272
9273         case I40E_VSI_VMDQ2:
9274                 ctxt.pf_num = hw->pf_id;
9275                 ctxt.vf_num = 0;
9276                 ctxt.uplink_seid = vsi->uplink_seid;
9277                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9278                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9279
9280                 /* This VSI is connected to VEB so the switch_id
9281                  * should be set to zero by default.
9282                  */
9283                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9284                         ctxt.info.valid_sections |=
9285                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9286                         ctxt.info.switch_id =
9287                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9288                 }
9289
9290                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9291                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9292                 break;
9293
9294         case I40E_VSI_SRIOV:
9295                 ctxt.pf_num = hw->pf_id;
9296                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9297                 ctxt.uplink_seid = vsi->uplink_seid;
9298                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9299                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9300
9301                 /* This VSI is connected to VEB so the switch_id
9302                  * should be set to zero by default.
9303                  */
9304                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9305                         ctxt.info.valid_sections |=
9306                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9307                         ctxt.info.switch_id =
9308                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9309                 }
9310
9311                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9312                         ctxt.info.valid_sections |=
9313                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9314                         ctxt.info.queueing_opt_flags |=
9315                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9316                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9317                 }
9318
9319                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9320                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9321                 if (pf->vf[vsi->vf_id].spoofchk) {
9322                         ctxt.info.valid_sections |=
9323                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9324                         ctxt.info.sec_flags |=
9325                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9326                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9327                 }
9328                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9329                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9330                 break;
9331
9332 #ifdef I40E_FCOE
9333         case I40E_VSI_FCOE:
9334                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9335                 if (ret) {
9336                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9337                         return ret;
9338                 }
9339                 break;
9340
9341 #endif /* I40E_FCOE */
9342         case I40E_VSI_IWARP:
9343                 /* send down message to iWARP */
9344                 break;
9345
9346         default:
9347                 return -ENODEV;
9348         }
9349
9350         if (vsi->type != I40E_VSI_MAIN) {
9351                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9352                 if (ret) {
9353                         dev_info(&vsi->back->pdev->dev,
9354                                  "add vsi failed, err %s aq_err %s\n",
9355                                  i40e_stat_str(&pf->hw, ret),
9356                                  i40e_aq_str(&pf->hw,
9357                                              pf->hw.aq.asq_last_status));
9358                         ret = -ENOENT;
9359                         goto err;
9360                 }
9361                 vsi->info = ctxt.info;
9362                 vsi->info.valid_sections = 0;
9363                 vsi->seid = ctxt.seid;
9364                 vsi->id = ctxt.vsi_number;
9365         }
9366
9367         spin_lock_bh(&vsi->mac_filter_list_lock);
9368         /* If macvlan filters already exist, force them to get loaded */
9369         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9370                 f->changed = true;
9371                 f_count++;
9372
9373                 /* Expected to have only one MAC filter entry for LAA in list */
9374                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9375                         ether_addr_copy(laa_macaddr, f->macaddr);
9376                         found_laa_mac_filter = true;
9377                 }
9378         }
9379         spin_unlock_bh(&vsi->mac_filter_list_lock);
9380
9381         if (found_laa_mac_filter) {
9382                 struct i40e_aqc_remove_macvlan_element_data element;
9383
9384                 memset(&element, 0, sizeof(element));
9385                 ether_addr_copy(element.mac_addr, laa_macaddr);
9386                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9387                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9388                                              &element, 1, NULL);
9389                 if (ret) {
9390                         /* some older FW has a different default */
9391                         element.flags |=
9392                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9393                         i40e_aq_remove_macvlan(hw, vsi->seid,
9394                                                &element, 1, NULL);
9395                 }
9396
9397                 i40e_aq_mac_address_write(hw,
9398                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9399                                           laa_macaddr, NULL);
9400         }
9401
9402         if (f_count) {
9403                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9404                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9405         }
9406
9407         /* Update VSI BW information */
9408         ret = i40e_vsi_get_bw_info(vsi);
9409         if (ret) {
9410                 dev_info(&pf->pdev->dev,
9411                          "couldn't get vsi bw info, err %s aq_err %s\n",
9412                          i40e_stat_str(&pf->hw, ret),
9413                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9414                 /* VSI is already added so not tearing that up */
9415                 ret = 0;
9416         }
9417
9418 err:
9419         return ret;
9420 }
9421
9422 /**
9423  * i40e_vsi_release - Delete a VSI and free its resources
9424  * @vsi: the VSI being removed
9425  *
9426  * Returns 0 on success or < 0 on error
9427  **/
9428 int i40e_vsi_release(struct i40e_vsi *vsi)
9429 {
9430         struct i40e_mac_filter *f, *ftmp;
9431         struct i40e_veb *veb = NULL;
9432         struct i40e_pf *pf;
9433         u16 uplink_seid;
9434         int i, n;
9435
9436         pf = vsi->back;
9437
9438         /* release of a VEB-owner or last VSI is not allowed */
9439         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9440                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9441                          vsi->seid, vsi->uplink_seid);
9442                 return -ENODEV;
9443         }
9444         if (vsi == pf->vsi[pf->lan_vsi] &&
9445             !test_bit(__I40E_DOWN, &pf->state)) {
9446                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9447                 return -ENODEV;
9448         }
9449
9450         uplink_seid = vsi->uplink_seid;
9451         if (vsi->type != I40E_VSI_SRIOV) {
9452                 if (vsi->netdev_registered) {
9453                         vsi->netdev_registered = false;
9454                         if (vsi->netdev) {
9455                                 /* results in a call to i40e_close() */
9456                                 unregister_netdev(vsi->netdev);
9457                         }
9458                 } else {
9459                         i40e_vsi_close(vsi);
9460                 }
9461                 i40e_vsi_disable_irq(vsi);
9462         }
9463
9464         spin_lock_bh(&vsi->mac_filter_list_lock);
9465         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9466                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9467                                 f->is_vf, f->is_netdev);
9468         spin_unlock_bh(&vsi->mac_filter_list_lock);
9469
9470         i40e_sync_vsi_filters(vsi);
9471
9472         i40e_vsi_delete(vsi);
9473         i40e_vsi_free_q_vectors(vsi);
9474         if (vsi->netdev) {
9475                 free_netdev(vsi->netdev);
9476                 vsi->netdev = NULL;
9477         }
9478         i40e_vsi_clear_rings(vsi);
9479         i40e_vsi_clear(vsi);
9480
9481         /* If this was the last thing on the VEB, except for the
9482          * controlling VSI, remove the VEB, which puts the controlling
9483          * VSI onto the next level down in the switch.
9484          *
9485          * Well, okay, there's one more exception here: don't remove
9486          * the orphan VEBs yet.  We'll wait for an explicit remove request
9487          * from up the network stack.
9488          */
9489         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9490                 if (pf->vsi[i] &&
9491                     pf->vsi[i]->uplink_seid == uplink_seid &&
9492                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9493                         n++;      /* count the VSIs */
9494                 }
9495         }
9496         for (i = 0; i < I40E_MAX_VEB; i++) {
9497                 if (!pf->veb[i])
9498                         continue;
9499                 if (pf->veb[i]->uplink_seid == uplink_seid)
9500                         n++;     /* count the VEBs */
9501                 if (pf->veb[i]->seid == uplink_seid)
9502                         veb = pf->veb[i];
9503         }
9504         if (n == 0 && veb && veb->uplink_seid != 0)
9505                 i40e_veb_release(veb);
9506
9507         return 0;
9508 }
9509
9510 /**
9511  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9512  * @vsi: ptr to the VSI
9513  *
9514  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9515  * corresponding SW VSI structure and initializes num_queue_pairs for the
9516  * newly allocated VSI.
9517  *
9518  * Returns 0 on success or negative on failure
9519  **/
9520 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9521 {
9522         int ret = -ENOENT;
9523         struct i40e_pf *pf = vsi->back;
9524
9525         if (vsi->q_vectors[0]) {
9526                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9527                          vsi->seid);
9528                 return -EEXIST;
9529         }
9530
9531         if (vsi->base_vector) {
9532                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9533                          vsi->seid, vsi->base_vector);
9534                 return -EEXIST;
9535         }
9536
9537         ret = i40e_vsi_alloc_q_vectors(vsi);
9538         if (ret) {
9539                 dev_info(&pf->pdev->dev,
9540                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9541                          vsi->num_q_vectors, vsi->seid, ret);
9542                 vsi->num_q_vectors = 0;
9543                 goto vector_setup_out;
9544         }
9545
9546         /* In Legacy mode, we do not have to get any other vector since we
9547          * piggyback on the misc/ICR0 for queue interrupts.
9548         */
9549         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9550                 return ret;
9551         if (vsi->num_q_vectors)
9552                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9553                                                  vsi->num_q_vectors, vsi->idx);
9554         if (vsi->base_vector < 0) {
9555                 dev_info(&pf->pdev->dev,
9556                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9557                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9558                 i40e_vsi_free_q_vectors(vsi);
9559                 ret = -ENOENT;
9560                 goto vector_setup_out;
9561         }
9562
9563 vector_setup_out:
9564         return ret;
9565 }
9566
9567 /**
9568  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9569  * @vsi: pointer to the vsi.
9570  *
9571  * This re-allocates a vsi's queue resources.
9572  *
9573  * Returns pointer to the successfully allocated and configured VSI sw struct
9574  * on success, otherwise returns NULL on failure.
9575  **/
9576 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9577 {
9578         struct i40e_pf *pf;
9579         u8 enabled_tc;
9580         int ret;
9581
9582         if (!vsi)
9583                 return NULL;
9584
9585         pf = vsi->back;
9586
9587         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9588         i40e_vsi_clear_rings(vsi);
9589
9590         i40e_vsi_free_arrays(vsi, false);
9591         i40e_set_num_rings_in_vsi(vsi);
9592         ret = i40e_vsi_alloc_arrays(vsi, false);
9593         if (ret)
9594                 goto err_vsi;
9595
9596         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9597         if (ret < 0) {
9598                 dev_info(&pf->pdev->dev,
9599                          "failed to get tracking for %d queues for VSI %d err %d\n",
9600                          vsi->alloc_queue_pairs, vsi->seid, ret);
9601                 goto err_vsi;
9602         }
9603         vsi->base_queue = ret;
9604
9605         /* Update the FW view of the VSI. Force a reset of TC and queue
9606          * layout configurations.
9607          */
9608         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9609         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9610         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9611         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9612
9613         /* assign it some queues */
9614         ret = i40e_alloc_rings(vsi);
9615         if (ret)
9616                 goto err_rings;
9617
9618         /* map all of the rings to the q_vectors */
9619         i40e_vsi_map_rings_to_vectors(vsi);
9620         return vsi;
9621
9622 err_rings:
9623         i40e_vsi_free_q_vectors(vsi);
9624         if (vsi->netdev_registered) {
9625                 vsi->netdev_registered = false;
9626                 unregister_netdev(vsi->netdev);
9627                 free_netdev(vsi->netdev);
9628                 vsi->netdev = NULL;
9629         }
9630         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9631 err_vsi:
9632         i40e_vsi_clear(vsi);
9633         return NULL;
9634 }
9635
9636 /**
9637  * i40e_macaddr_init - explicitly write the mac address filters.
9638  *
9639  * @vsi: pointer to the vsi.
9640  * @macaddr: the MAC address
9641  *
9642  * This is needed when the macaddr has been obtained by other
9643  * means than the default, e.g., from Open Firmware or IDPROM.
9644  * Returns 0 on success, negative on failure
9645  **/
9646 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9647 {
9648         int ret;
9649         struct i40e_aqc_add_macvlan_element_data element;
9650
9651         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9652                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9653                                         macaddr, NULL);
9654         if (ret) {
9655                 dev_info(&vsi->back->pdev->dev,
9656                          "Addr change for VSI failed: %d\n", ret);
9657                 return -EADDRNOTAVAIL;
9658         }
9659
9660         memset(&element, 0, sizeof(element));
9661         ether_addr_copy(element.mac_addr, macaddr);
9662         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9663         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9664         if (ret) {
9665                 dev_info(&vsi->back->pdev->dev,
9666                          "add filter failed err %s aq_err %s\n",
9667                          i40e_stat_str(&vsi->back->hw, ret),
9668                          i40e_aq_str(&vsi->back->hw,
9669                                      vsi->back->hw.aq.asq_last_status));
9670         }
9671         return ret;
9672 }
9673
9674 /**
9675  * i40e_vsi_setup - Set up a VSI by a given type
9676  * @pf: board private structure
9677  * @type: VSI type
9678  * @uplink_seid: the switch element to link to
9679  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9680  *
9681  * This allocates the sw VSI structure and its queue resources, then add a VSI
9682  * to the identified VEB.
9683  *
9684  * Returns pointer to the successfully allocated and configure VSI sw struct on
9685  * success, otherwise returns NULL on failure.
9686  **/
9687 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9688                                 u16 uplink_seid, u32 param1)
9689 {
9690         struct i40e_vsi *vsi = NULL;
9691         struct i40e_veb *veb = NULL;
9692         int ret, i;
9693         int v_idx;
9694
9695         /* The requested uplink_seid must be either
9696          *     - the PF's port seid
9697          *              no VEB is needed because this is the PF
9698          *              or this is a Flow Director special case VSI
9699          *     - seid of an existing VEB
9700          *     - seid of a VSI that owns an existing VEB
9701          *     - seid of a VSI that doesn't own a VEB
9702          *              a new VEB is created and the VSI becomes the owner
9703          *     - seid of the PF VSI, which is what creates the first VEB
9704          *              this is a special case of the previous
9705          *
9706          * Find which uplink_seid we were given and create a new VEB if needed
9707          */
9708         for (i = 0; i < I40E_MAX_VEB; i++) {
9709                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9710                         veb = pf->veb[i];
9711                         break;
9712                 }
9713         }
9714
9715         if (!veb && uplink_seid != pf->mac_seid) {
9716
9717                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9718                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9719                                 vsi = pf->vsi[i];
9720                                 break;
9721                         }
9722                 }
9723                 if (!vsi) {
9724                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9725                                  uplink_seid);
9726                         return NULL;
9727                 }
9728
9729                 if (vsi->uplink_seid == pf->mac_seid)
9730                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9731                                              vsi->tc_config.enabled_tc);
9732                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9733                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9734                                              vsi->tc_config.enabled_tc);
9735                 if (veb) {
9736                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9737                                 dev_info(&vsi->back->pdev->dev,
9738                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9739                                 return NULL;
9740                         }
9741                         /* We come up by default in VEPA mode if SRIOV is not
9742                          * already enabled, in which case we can't force VEPA
9743                          * mode.
9744                          */
9745                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9746                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9747                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9748                         }
9749                         i40e_config_bridge_mode(veb);
9750                 }
9751                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9752                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9753                                 veb = pf->veb[i];
9754                 }
9755                 if (!veb) {
9756                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9757                         return NULL;
9758                 }
9759
9760                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9761                 uplink_seid = veb->seid;
9762         }
9763
9764         /* get vsi sw struct */
9765         v_idx = i40e_vsi_mem_alloc(pf, type);
9766         if (v_idx < 0)
9767                 goto err_alloc;
9768         vsi = pf->vsi[v_idx];
9769         if (!vsi)
9770                 goto err_alloc;
9771         vsi->type = type;
9772         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9773
9774         if (type == I40E_VSI_MAIN)
9775                 pf->lan_vsi = v_idx;
9776         else if (type == I40E_VSI_SRIOV)
9777                 vsi->vf_id = param1;
9778         /* assign it some queues */
9779         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9780                                 vsi->idx);
9781         if (ret < 0) {
9782                 dev_info(&pf->pdev->dev,
9783                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9784                          vsi->alloc_queue_pairs, vsi->seid, ret);
9785                 goto err_vsi;
9786         }
9787         vsi->base_queue = ret;
9788
9789         /* get a VSI from the hardware */
9790         vsi->uplink_seid = uplink_seid;
9791         ret = i40e_add_vsi(vsi);
9792         if (ret)
9793                 goto err_vsi;
9794
9795         switch (vsi->type) {
9796         /* setup the netdev if needed */
9797         case I40E_VSI_MAIN:
9798                 /* Apply relevant filters if a platform-specific mac
9799                  * address was selected.
9800                  */
9801                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9802                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9803                         if (ret) {
9804                                 dev_warn(&pf->pdev->dev,
9805                                          "could not set up macaddr; err %d\n",
9806                                          ret);
9807                         }
9808                 }
9809         case I40E_VSI_VMDQ2:
9810         case I40E_VSI_FCOE:
9811                 ret = i40e_config_netdev(vsi);
9812                 if (ret)
9813                         goto err_netdev;
9814                 ret = register_netdev(vsi->netdev);
9815                 if (ret)
9816                         goto err_netdev;
9817                 vsi->netdev_registered = true;
9818                 netif_carrier_off(vsi->netdev);
9819 #ifdef CONFIG_I40E_DCB
9820                 /* Setup DCB netlink interface */
9821                 i40e_dcbnl_setup(vsi);
9822 #endif /* CONFIG_I40E_DCB */
9823                 /* fall through */
9824
9825         case I40E_VSI_FDIR:
9826                 /* set up vectors and rings if needed */
9827                 ret = i40e_vsi_setup_vectors(vsi);
9828                 if (ret)
9829                         goto err_msix;
9830
9831                 ret = i40e_alloc_rings(vsi);
9832                 if (ret)
9833                         goto err_rings;
9834
9835                 /* map all of the rings to the q_vectors */
9836                 i40e_vsi_map_rings_to_vectors(vsi);
9837
9838                 i40e_vsi_reset_stats(vsi);
9839                 break;
9840
9841         default:
9842                 /* no netdev or rings for the other VSI types */
9843                 break;
9844         }
9845
9846         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9847             (vsi->type == I40E_VSI_VMDQ2)) {
9848                 ret = i40e_vsi_config_rss(vsi);
9849         }
9850         return vsi;
9851
9852 err_rings:
9853         i40e_vsi_free_q_vectors(vsi);
9854 err_msix:
9855         if (vsi->netdev_registered) {
9856                 vsi->netdev_registered = false;
9857                 unregister_netdev(vsi->netdev);
9858                 free_netdev(vsi->netdev);
9859                 vsi->netdev = NULL;
9860         }
9861 err_netdev:
9862         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9863 err_vsi:
9864         i40e_vsi_clear(vsi);
9865 err_alloc:
9866         return NULL;
9867 }
9868
9869 /**
9870  * i40e_veb_get_bw_info - Query VEB BW information
9871  * @veb: the veb to query
9872  *
9873  * Query the Tx scheduler BW configuration data for given VEB
9874  **/
9875 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9876 {
9877         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9878         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9879         struct i40e_pf *pf = veb->pf;
9880         struct i40e_hw *hw = &pf->hw;
9881         u32 tc_bw_max;
9882         int ret = 0;
9883         int i;
9884
9885         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9886                                                   &bw_data, NULL);
9887         if (ret) {
9888                 dev_info(&pf->pdev->dev,
9889                          "query veb bw config failed, err %s aq_err %s\n",
9890                          i40e_stat_str(&pf->hw, ret),
9891                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9892                 goto out;
9893         }
9894
9895         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9896                                                    &ets_data, NULL);
9897         if (ret) {
9898                 dev_info(&pf->pdev->dev,
9899                          "query veb bw ets config failed, err %s aq_err %s\n",
9900                          i40e_stat_str(&pf->hw, ret),
9901                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9902                 goto out;
9903         }
9904
9905         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9906         veb->bw_max_quanta = ets_data.tc_bw_max;
9907         veb->is_abs_credits = bw_data.absolute_credits_enable;
9908         veb->enabled_tc = ets_data.tc_valid_bits;
9909         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9910                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9911         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9912                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9913                 veb->bw_tc_limit_credits[i] =
9914                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9915                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9916         }
9917
9918 out:
9919         return ret;
9920 }
9921
9922 /**
9923  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9924  * @pf: board private structure
9925  *
9926  * On error: returns error code (negative)
9927  * On success: returns vsi index in PF (positive)
9928  **/
9929 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9930 {
9931         int ret = -ENOENT;
9932         struct i40e_veb *veb;
9933         int i;
9934
9935         /* Need to protect the allocation of switch elements at the PF level */
9936         mutex_lock(&pf->switch_mutex);
9937
9938         /* VEB list may be fragmented if VEB creation/destruction has
9939          * been happening.  We can afford to do a quick scan to look
9940          * for any free slots in the list.
9941          *
9942          * find next empty veb slot, looping back around if necessary
9943          */
9944         i = 0;
9945         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9946                 i++;
9947         if (i >= I40E_MAX_VEB) {
9948                 ret = -ENOMEM;
9949                 goto err_alloc_veb;  /* out of VEB slots! */
9950         }
9951
9952         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9953         if (!veb) {
9954                 ret = -ENOMEM;
9955                 goto err_alloc_veb;
9956         }
9957         veb->pf = pf;
9958         veb->idx = i;
9959         veb->enabled_tc = 1;
9960
9961         pf->veb[i] = veb;
9962         ret = i;
9963 err_alloc_veb:
9964         mutex_unlock(&pf->switch_mutex);
9965         return ret;
9966 }
9967
9968 /**
9969  * i40e_switch_branch_release - Delete a branch of the switch tree
9970  * @branch: where to start deleting
9971  *
9972  * This uses recursion to find the tips of the branch to be
9973  * removed, deleting until we get back to and can delete this VEB.
9974  **/
9975 static void i40e_switch_branch_release(struct i40e_veb *branch)
9976 {
9977         struct i40e_pf *pf = branch->pf;
9978         u16 branch_seid = branch->seid;
9979         u16 veb_idx = branch->idx;
9980         int i;
9981
9982         /* release any VEBs on this VEB - RECURSION */
9983         for (i = 0; i < I40E_MAX_VEB; i++) {
9984                 if (!pf->veb[i])
9985                         continue;
9986                 if (pf->veb[i]->uplink_seid == branch->seid)
9987                         i40e_switch_branch_release(pf->veb[i]);
9988         }
9989
9990         /* Release the VSIs on this VEB, but not the owner VSI.
9991          *
9992          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9993          *       the VEB itself, so don't use (*branch) after this loop.
9994          */
9995         for (i = 0; i < pf->num_alloc_vsi; i++) {
9996                 if (!pf->vsi[i])
9997                         continue;
9998                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9999                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10000                         i40e_vsi_release(pf->vsi[i]);
10001                 }
10002         }
10003
10004         /* There's one corner case where the VEB might not have been
10005          * removed, so double check it here and remove it if needed.
10006          * This case happens if the veb was created from the debugfs
10007          * commands and no VSIs were added to it.
10008          */
10009         if (pf->veb[veb_idx])
10010                 i40e_veb_release(pf->veb[veb_idx]);
10011 }
10012
10013 /**
10014  * i40e_veb_clear - remove veb struct
10015  * @veb: the veb to remove
10016  **/
10017 static void i40e_veb_clear(struct i40e_veb *veb)
10018 {
10019         if (!veb)
10020                 return;
10021
10022         if (veb->pf) {
10023                 struct i40e_pf *pf = veb->pf;
10024
10025                 mutex_lock(&pf->switch_mutex);
10026                 if (pf->veb[veb->idx] == veb)
10027                         pf->veb[veb->idx] = NULL;
10028                 mutex_unlock(&pf->switch_mutex);
10029         }
10030
10031         kfree(veb);
10032 }
10033
10034 /**
10035  * i40e_veb_release - Delete a VEB and free its resources
10036  * @veb: the VEB being removed
10037  **/
10038 void i40e_veb_release(struct i40e_veb *veb)
10039 {
10040         struct i40e_vsi *vsi = NULL;
10041         struct i40e_pf *pf;
10042         int i, n = 0;
10043
10044         pf = veb->pf;
10045
10046         /* find the remaining VSI and check for extras */
10047         for (i = 0; i < pf->num_alloc_vsi; i++) {
10048                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10049                         n++;
10050                         vsi = pf->vsi[i];
10051                 }
10052         }
10053         if (n != 1) {
10054                 dev_info(&pf->pdev->dev,
10055                          "can't remove VEB %d with %d VSIs left\n",
10056                          veb->seid, n);
10057                 return;
10058         }
10059
10060         /* move the remaining VSI to uplink veb */
10061         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10062         if (veb->uplink_seid) {
10063                 vsi->uplink_seid = veb->uplink_seid;
10064                 if (veb->uplink_seid == pf->mac_seid)
10065                         vsi->veb_idx = I40E_NO_VEB;
10066                 else
10067                         vsi->veb_idx = veb->veb_idx;
10068         } else {
10069                 /* floating VEB */
10070                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10071                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10072         }
10073
10074         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10075         i40e_veb_clear(veb);
10076 }
10077
10078 /**
10079  * i40e_add_veb - create the VEB in the switch
10080  * @veb: the VEB to be instantiated
10081  * @vsi: the controlling VSI
10082  **/
10083 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10084 {
10085         struct i40e_pf *pf = veb->pf;
10086         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10087         int ret;
10088
10089         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10090                               veb->enabled_tc, false,
10091                               &veb->seid, enable_stats, NULL);
10092
10093         /* get a VEB from the hardware */
10094         if (ret) {
10095                 dev_info(&pf->pdev->dev,
10096                          "couldn't add VEB, err %s aq_err %s\n",
10097                          i40e_stat_str(&pf->hw, ret),
10098                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10099                 return -EPERM;
10100         }
10101
10102         /* get statistics counter */
10103         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10104                                          &veb->stats_idx, NULL, NULL, NULL);
10105         if (ret) {
10106                 dev_info(&pf->pdev->dev,
10107                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10108                          i40e_stat_str(&pf->hw, ret),
10109                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10110                 return -EPERM;
10111         }
10112         ret = i40e_veb_get_bw_info(veb);
10113         if (ret) {
10114                 dev_info(&pf->pdev->dev,
10115                          "couldn't get VEB bw info, err %s aq_err %s\n",
10116                          i40e_stat_str(&pf->hw, ret),
10117                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10118                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10119                 return -ENOENT;
10120         }
10121
10122         vsi->uplink_seid = veb->seid;
10123         vsi->veb_idx = veb->idx;
10124         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10125
10126         return 0;
10127 }
10128
10129 /**
10130  * i40e_veb_setup - Set up a VEB
10131  * @pf: board private structure
10132  * @flags: VEB setup flags
10133  * @uplink_seid: the switch element to link to
10134  * @vsi_seid: the initial VSI seid
10135  * @enabled_tc: Enabled TC bit-map
10136  *
10137  * This allocates the sw VEB structure and links it into the switch
10138  * It is possible and legal for this to be a duplicate of an already
10139  * existing VEB.  It is also possible for both uplink and vsi seids
10140  * to be zero, in order to create a floating VEB.
10141  *
10142  * Returns pointer to the successfully allocated VEB sw struct on
10143  * success, otherwise returns NULL on failure.
10144  **/
10145 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10146                                 u16 uplink_seid, u16 vsi_seid,
10147                                 u8 enabled_tc)
10148 {
10149         struct i40e_veb *veb, *uplink_veb = NULL;
10150         int vsi_idx, veb_idx;
10151         int ret;
10152
10153         /* if one seid is 0, the other must be 0 to create a floating relay */
10154         if ((uplink_seid == 0 || vsi_seid == 0) &&
10155             (uplink_seid + vsi_seid != 0)) {
10156                 dev_info(&pf->pdev->dev,
10157                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10158                          uplink_seid, vsi_seid);
10159                 return NULL;
10160         }
10161
10162         /* make sure there is such a vsi and uplink */
10163         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10164                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10165                         break;
10166         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10167                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10168                          vsi_seid);
10169                 return NULL;
10170         }
10171
10172         if (uplink_seid && uplink_seid != pf->mac_seid) {
10173                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10174                         if (pf->veb[veb_idx] &&
10175                             pf->veb[veb_idx]->seid == uplink_seid) {
10176                                 uplink_veb = pf->veb[veb_idx];
10177                                 break;
10178                         }
10179                 }
10180                 if (!uplink_veb) {
10181                         dev_info(&pf->pdev->dev,
10182                                  "uplink seid %d not found\n", uplink_seid);
10183                         return NULL;
10184                 }
10185         }
10186
10187         /* get veb sw struct */
10188         veb_idx = i40e_veb_mem_alloc(pf);
10189         if (veb_idx < 0)
10190                 goto err_alloc;
10191         veb = pf->veb[veb_idx];
10192         veb->flags = flags;
10193         veb->uplink_seid = uplink_seid;
10194         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10195         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10196
10197         /* create the VEB in the switch */
10198         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10199         if (ret)
10200                 goto err_veb;
10201         if (vsi_idx == pf->lan_vsi)
10202                 pf->lan_veb = veb->idx;
10203
10204         return veb;
10205
10206 err_veb:
10207         i40e_veb_clear(veb);
10208 err_alloc:
10209         return NULL;
10210 }
10211
10212 /**
10213  * i40e_setup_pf_switch_element - set PF vars based on switch type
10214  * @pf: board private structure
10215  * @ele: element we are building info from
10216  * @num_reported: total number of elements
10217  * @printconfig: should we print the contents
10218  *
10219  * helper function to assist in extracting a few useful SEID values.
10220  **/
10221 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10222                                 struct i40e_aqc_switch_config_element_resp *ele,
10223                                 u16 num_reported, bool printconfig)
10224 {
10225         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10226         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10227         u8 element_type = ele->element_type;
10228         u16 seid = le16_to_cpu(ele->seid);
10229
10230         if (printconfig)
10231                 dev_info(&pf->pdev->dev,
10232                          "type=%d seid=%d uplink=%d downlink=%d\n",
10233                          element_type, seid, uplink_seid, downlink_seid);
10234
10235         switch (element_type) {
10236         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10237                 pf->mac_seid = seid;
10238                 break;
10239         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10240                 /* Main VEB? */
10241                 if (uplink_seid != pf->mac_seid)
10242                         break;
10243                 if (pf->lan_veb == I40E_NO_VEB) {
10244                         int v;
10245
10246                         /* find existing or else empty VEB */
10247                         for (v = 0; v < I40E_MAX_VEB; v++) {
10248                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10249                                         pf->lan_veb = v;
10250                                         break;
10251                                 }
10252                         }
10253                         if (pf->lan_veb == I40E_NO_VEB) {
10254                                 v = i40e_veb_mem_alloc(pf);
10255                                 if (v < 0)
10256                                         break;
10257                                 pf->lan_veb = v;
10258                         }
10259                 }
10260
10261                 pf->veb[pf->lan_veb]->seid = seid;
10262                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10263                 pf->veb[pf->lan_veb]->pf = pf;
10264                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10265                 break;
10266         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10267                 if (num_reported != 1)
10268                         break;
10269                 /* This is immediately after a reset so we can assume this is
10270                  * the PF's VSI
10271                  */
10272                 pf->mac_seid = uplink_seid;
10273                 pf->pf_seid = downlink_seid;
10274                 pf->main_vsi_seid = seid;
10275                 if (printconfig)
10276                         dev_info(&pf->pdev->dev,
10277                                  "pf_seid=%d main_vsi_seid=%d\n",
10278                                  pf->pf_seid, pf->main_vsi_seid);
10279                 break;
10280         case I40E_SWITCH_ELEMENT_TYPE_PF:
10281         case I40E_SWITCH_ELEMENT_TYPE_VF:
10282         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10283         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10284         case I40E_SWITCH_ELEMENT_TYPE_PE:
10285         case I40E_SWITCH_ELEMENT_TYPE_PA:
10286                 /* ignore these for now */
10287                 break;
10288         default:
10289                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10290                          element_type, seid);
10291                 break;
10292         }
10293 }
10294
10295 /**
10296  * i40e_fetch_switch_configuration - Get switch config from firmware
10297  * @pf: board private structure
10298  * @printconfig: should we print the contents
10299  *
10300  * Get the current switch configuration from the device and
10301  * extract a few useful SEID values.
10302  **/
10303 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10304 {
10305         struct i40e_aqc_get_switch_config_resp *sw_config;
10306         u16 next_seid = 0;
10307         int ret = 0;
10308         u8 *aq_buf;
10309         int i;
10310
10311         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10312         if (!aq_buf)
10313                 return -ENOMEM;
10314
10315         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10316         do {
10317                 u16 num_reported, num_total;
10318
10319                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10320                                                 I40E_AQ_LARGE_BUF,
10321                                                 &next_seid, NULL);
10322                 if (ret) {
10323                         dev_info(&pf->pdev->dev,
10324                                  "get switch config failed err %s aq_err %s\n",
10325                                  i40e_stat_str(&pf->hw, ret),
10326                                  i40e_aq_str(&pf->hw,
10327                                              pf->hw.aq.asq_last_status));
10328                         kfree(aq_buf);
10329                         return -ENOENT;
10330                 }
10331
10332                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10333                 num_total = le16_to_cpu(sw_config->header.num_total);
10334
10335                 if (printconfig)
10336                         dev_info(&pf->pdev->dev,
10337                                  "header: %d reported %d total\n",
10338                                  num_reported, num_total);
10339
10340                 for (i = 0; i < num_reported; i++) {
10341                         struct i40e_aqc_switch_config_element_resp *ele =
10342                                 &sw_config->element[i];
10343
10344                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10345                                                      printconfig);
10346                 }
10347         } while (next_seid != 0);
10348
10349         kfree(aq_buf);
10350         return ret;
10351 }
10352
10353 /**
10354  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10355  * @pf: board private structure
10356  * @reinit: if the Main VSI needs to re-initialized.
10357  *
10358  * Returns 0 on success, negative value on failure
10359  **/
10360 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10361 {
10362         u16 flags = 0;
10363         int ret;
10364
10365         /* find out what's out there already */
10366         ret = i40e_fetch_switch_configuration(pf, false);
10367         if (ret) {
10368                 dev_info(&pf->pdev->dev,
10369                          "couldn't fetch switch config, err %s aq_err %s\n",
10370                          i40e_stat_str(&pf->hw, ret),
10371                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10372                 return ret;
10373         }
10374         i40e_pf_reset_stats(pf);
10375
10376         /* set the switch config bit for the whole device to
10377          * support limited promisc or true promisc
10378          * when user requests promisc. The default is limited
10379          * promisc.
10380         */
10381
10382         if ((pf->hw.pf_id == 0) &&
10383             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10384                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10385
10386         if (pf->hw.pf_id == 0) {
10387                 u16 valid_flags;
10388
10389                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10390                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10391                                                 NULL);
10392                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10393                         dev_info(&pf->pdev->dev,
10394                                  "couldn't set switch config bits, err %s aq_err %s\n",
10395                                  i40e_stat_str(&pf->hw, ret),
10396                                  i40e_aq_str(&pf->hw,
10397                                              pf->hw.aq.asq_last_status));
10398                         /* not a fatal problem, just keep going */
10399                 }
10400         }
10401
10402         /* first time setup */
10403         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10404                 struct i40e_vsi *vsi = NULL;
10405                 u16 uplink_seid;
10406
10407                 /* Set up the PF VSI associated with the PF's main VSI
10408                  * that is already in the HW switch
10409                  */
10410                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10411                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10412                 else
10413                         uplink_seid = pf->mac_seid;
10414                 if (pf->lan_vsi == I40E_NO_VSI)
10415                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10416                 else if (reinit)
10417                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10418                 if (!vsi) {
10419                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10420                         i40e_fdir_teardown(pf);
10421                         return -EAGAIN;
10422                 }
10423         } else {
10424                 /* force a reset of TC and queue layout configurations */
10425                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10426
10427                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10428                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10429                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10430         }
10431         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10432
10433         i40e_fdir_sb_setup(pf);
10434
10435         /* Setup static PF queue filter control settings */
10436         ret = i40e_setup_pf_filter_control(pf);
10437         if (ret) {
10438                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10439                          ret);
10440                 /* Failure here should not stop continuing other steps */
10441         }
10442
10443         /* enable RSS in the HW, even for only one queue, as the stack can use
10444          * the hash
10445          */
10446         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10447                 i40e_pf_config_rss(pf);
10448
10449         /* fill in link information and enable LSE reporting */
10450         i40e_update_link_info(&pf->hw);
10451         i40e_link_event(pf);
10452
10453         /* Initialize user-specific link properties */
10454         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10455                                   I40E_AQ_AN_COMPLETED) ? true : false);
10456
10457         i40e_ptp_init(pf);
10458
10459         return ret;
10460 }
10461
10462 /**
10463  * i40e_determine_queue_usage - Work out queue distribution
10464  * @pf: board private structure
10465  **/
10466 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10467 {
10468         int queues_left;
10469
10470         pf->num_lan_qps = 0;
10471 #ifdef I40E_FCOE
10472         pf->num_fcoe_qps = 0;
10473 #endif
10474
10475         /* Find the max queues to be put into basic use.  We'll always be
10476          * using TC0, whether or not DCB is running, and TC0 will get the
10477          * big RSS set.
10478          */
10479         queues_left = pf->hw.func_caps.num_tx_qp;
10480
10481         if ((queues_left == 1) ||
10482             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10483                 /* one qp for PF, no queues for anything else */
10484                 queues_left = 0;
10485                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10486
10487                 /* make sure all the fancies are disabled */
10488                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10489                                I40E_FLAG_IWARP_ENABLED  |
10490 #ifdef I40E_FCOE
10491                                I40E_FLAG_FCOE_ENABLED   |
10492 #endif
10493                                I40E_FLAG_FD_SB_ENABLED  |
10494                                I40E_FLAG_FD_ATR_ENABLED |
10495                                I40E_FLAG_DCB_CAPABLE    |
10496                                I40E_FLAG_SRIOV_ENABLED  |
10497                                I40E_FLAG_VMDQ_ENABLED);
10498         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10499                                   I40E_FLAG_FD_SB_ENABLED |
10500                                   I40E_FLAG_FD_ATR_ENABLED |
10501                                   I40E_FLAG_DCB_CAPABLE))) {
10502                 /* one qp for PF */
10503                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10504                 queues_left -= pf->num_lan_qps;
10505
10506                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10507                                I40E_FLAG_IWARP_ENABLED  |
10508 #ifdef I40E_FCOE
10509                                I40E_FLAG_FCOE_ENABLED   |
10510 #endif
10511                                I40E_FLAG_FD_SB_ENABLED  |
10512                                I40E_FLAG_FD_ATR_ENABLED |
10513                                I40E_FLAG_DCB_ENABLED    |
10514                                I40E_FLAG_VMDQ_ENABLED);
10515         } else {
10516                 /* Not enough queues for all TCs */
10517                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10518                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10519                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10520                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10521                 }
10522                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10523                                         num_online_cpus());
10524                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10525                                         pf->hw.func_caps.num_tx_qp);
10526
10527                 queues_left -= pf->num_lan_qps;
10528         }
10529
10530 #ifdef I40E_FCOE
10531         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10532                 if (I40E_DEFAULT_FCOE <= queues_left) {
10533                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10534                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10535                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10536                 } else {
10537                         pf->num_fcoe_qps = 0;
10538                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10539                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10540                 }
10541
10542                 queues_left -= pf->num_fcoe_qps;
10543         }
10544
10545 #endif
10546         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10547                 if (queues_left > 1) {
10548                         queues_left -= 1; /* save 1 queue for FD */
10549                 } else {
10550                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10551                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10552                 }
10553         }
10554
10555         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10556             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10557                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10558                                         (queues_left / pf->num_vf_qps));
10559                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10560         }
10561
10562         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10563             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10564                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10565                                           (queues_left / pf->num_vmdq_qps));
10566                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10567         }
10568
10569         pf->queues_left = queues_left;
10570         dev_dbg(&pf->pdev->dev,
10571                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10572                 pf->hw.func_caps.num_tx_qp,
10573                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10574                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10575                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10576                 queues_left);
10577 #ifdef I40E_FCOE
10578         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10579 #endif
10580 }
10581
10582 /**
10583  * i40e_setup_pf_filter_control - Setup PF static filter control
10584  * @pf: PF to be setup
10585  *
10586  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10587  * settings. If PE/FCoE are enabled then it will also set the per PF
10588  * based filter sizes required for them. It also enables Flow director,
10589  * ethertype and macvlan type filter settings for the pf.
10590  *
10591  * Returns 0 on success, negative on failure
10592  **/
10593 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10594 {
10595         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10596
10597         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10598
10599         /* Flow Director is enabled */
10600         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10601                 settings->enable_fdir = true;
10602
10603         /* Ethtype and MACVLAN filters enabled for PF */
10604         settings->enable_ethtype = true;
10605         settings->enable_macvlan = true;
10606
10607         if (i40e_set_filter_control(&pf->hw, settings))
10608                 return -ENOENT;
10609
10610         return 0;
10611 }
10612
10613 #define INFO_STRING_LEN 255
10614 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10615 static void i40e_print_features(struct i40e_pf *pf)
10616 {
10617         struct i40e_hw *hw = &pf->hw;
10618         char *buf;
10619         int i;
10620
10621         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10622         if (!buf)
10623                 return;
10624
10625         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10626 #ifdef CONFIG_PCI_IOV
10627         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10628 #endif
10629         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10630                       pf->hw.func_caps.num_vsis,
10631                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10632         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10633                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10634         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10635                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10636         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10637                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10638                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10639         }
10640         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10641                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10642         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10643         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10644         if (pf->flags & I40E_FLAG_PTP)
10645                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10646 #ifdef I40E_FCOE
10647         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10648                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10649 #endif
10650         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10651                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10652         else
10653                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10654
10655         dev_info(&pf->pdev->dev, "%s\n", buf);
10656         kfree(buf);
10657         WARN_ON(i > INFO_STRING_LEN);
10658 }
10659
10660 /**
10661  * i40e_get_platform_mac_addr - get platform-specific MAC address
10662  *
10663  * @pdev: PCI device information struct
10664  * @pf: board private structure
10665  *
10666  * Look up the MAC address in Open Firmware  on systems that support it,
10667  * and use IDPROM on SPARC if no OF address is found. On return, the
10668  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10669  * has been selected.
10670  **/
10671 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10672 {
10673         pf->flags &= ~I40E_FLAG_PF_MAC;
10674         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10675                 pf->flags |= I40E_FLAG_PF_MAC;
10676 }
10677
10678 /**
10679  * i40e_probe - Device initialization routine
10680  * @pdev: PCI device information struct
10681  * @ent: entry in i40e_pci_tbl
10682  *
10683  * i40e_probe initializes a PF identified by a pci_dev structure.
10684  * The OS initialization, configuring of the PF private structure,
10685  * and a hardware reset occur.
10686  *
10687  * Returns 0 on success, negative on failure
10688  **/
10689 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10690 {
10691         struct i40e_aq_get_phy_abilities_resp abilities;
10692         struct i40e_pf *pf;
10693         struct i40e_hw *hw;
10694         static u16 pfs_found;
10695         u16 wol_nvm_bits;
10696         u16 link_status;
10697         int err;
10698         u32 val;
10699         u32 i;
10700         u8 set_fc_aq_fail;
10701
10702         err = pci_enable_device_mem(pdev);
10703         if (err)
10704                 return err;
10705
10706         /* set up for high or low dma */
10707         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10708         if (err) {
10709                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10710                 if (err) {
10711                         dev_err(&pdev->dev,
10712                                 "DMA configuration failed: 0x%x\n", err);
10713                         goto err_dma;
10714                 }
10715         }
10716
10717         /* set up pci connections */
10718         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10719                                            IORESOURCE_MEM), i40e_driver_name);
10720         if (err) {
10721                 dev_info(&pdev->dev,
10722                          "pci_request_selected_regions failed %d\n", err);
10723                 goto err_pci_reg;
10724         }
10725
10726         pci_enable_pcie_error_reporting(pdev);
10727         pci_set_master(pdev);
10728
10729         /* Now that we have a PCI connection, we need to do the
10730          * low level device setup.  This is primarily setting up
10731          * the Admin Queue structures and then querying for the
10732          * device's current profile information.
10733          */
10734         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10735         if (!pf) {
10736                 err = -ENOMEM;
10737                 goto err_pf_alloc;
10738         }
10739         pf->next_vsi = 0;
10740         pf->pdev = pdev;
10741         set_bit(__I40E_DOWN, &pf->state);
10742
10743         hw = &pf->hw;
10744         hw->back = pf;
10745
10746         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10747                                 I40E_MAX_CSR_SPACE);
10748
10749         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10750         if (!hw->hw_addr) {
10751                 err = -EIO;
10752                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10753                          (unsigned int)pci_resource_start(pdev, 0),
10754                          pf->ioremap_len, err);
10755                 goto err_ioremap;
10756         }
10757         hw->vendor_id = pdev->vendor;
10758         hw->device_id = pdev->device;
10759         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10760         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10761         hw->subsystem_device_id = pdev->subsystem_device;
10762         hw->bus.device = PCI_SLOT(pdev->devfn);
10763         hw->bus.func = PCI_FUNC(pdev->devfn);
10764         pf->instance = pfs_found;
10765
10766         /* set up the locks for the AQ, do this only once in probe
10767          * and destroy them only once in remove
10768          */
10769         mutex_init(&hw->aq.asq_mutex);
10770         mutex_init(&hw->aq.arq_mutex);
10771
10772         if (debug != -1) {
10773                 pf->msg_enable = pf->hw.debug_mask;
10774                 pf->msg_enable = debug;
10775         }
10776
10777         /* do a special CORER for clearing PXE mode once at init */
10778         if (hw->revision_id == 0 &&
10779             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10780                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10781                 i40e_flush(hw);
10782                 msleep(200);
10783                 pf->corer_count++;
10784
10785                 i40e_clear_pxe_mode(hw);
10786         }
10787
10788         /* Reset here to make sure all is clean and to define PF 'n' */
10789         i40e_clear_hw(hw);
10790         err = i40e_pf_reset(hw);
10791         if (err) {
10792                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10793                 goto err_pf_reset;
10794         }
10795         pf->pfr_count++;
10796
10797         hw->aq.num_arq_entries = I40E_AQ_LEN;
10798         hw->aq.num_asq_entries = I40E_AQ_LEN;
10799         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10800         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10801         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10802
10803         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10804                  "%s-%s:misc",
10805                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10806
10807         err = i40e_init_shared_code(hw);
10808         if (err) {
10809                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10810                          err);
10811                 goto err_pf_reset;
10812         }
10813
10814         /* set up a default setting for link flow control */
10815         pf->hw.fc.requested_mode = I40E_FC_NONE;
10816
10817         err = i40e_init_adminq(hw);
10818         if (err) {
10819                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10820                         dev_info(&pdev->dev,
10821                                  "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");
10822                 else
10823                         dev_info(&pdev->dev,
10824                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10825
10826                 goto err_pf_reset;
10827         }
10828
10829         /* provide nvm, fw, api versions */
10830         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10831                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10832                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10833                  i40e_nvm_version_str(hw));
10834
10835         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10836             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10837                 dev_info(&pdev->dev,
10838                          "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");
10839         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10840                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10841                 dev_info(&pdev->dev,
10842                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10843
10844         i40e_verify_eeprom(pf);
10845
10846         /* Rev 0 hardware was never productized */
10847         if (hw->revision_id < 1)
10848                 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");
10849
10850         i40e_clear_pxe_mode(hw);
10851         err = i40e_get_capabilities(pf);
10852         if (err)
10853                 goto err_adminq_setup;
10854
10855         err = i40e_sw_init(pf);
10856         if (err) {
10857                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10858                 goto err_sw_init;
10859         }
10860
10861         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10862                                 hw->func_caps.num_rx_qp,
10863                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10864         if (err) {
10865                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10866                 goto err_init_lan_hmc;
10867         }
10868
10869         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10870         if (err) {
10871                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10872                 err = -ENOENT;
10873                 goto err_configure_lan_hmc;
10874         }
10875
10876         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10877          * Ignore error return codes because if it was already disabled via
10878          * hardware settings this will fail
10879          */
10880         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10881                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10882                 i40e_aq_stop_lldp(hw, true, NULL);
10883         }
10884
10885         i40e_get_mac_addr(hw, hw->mac.addr);
10886         /* allow a platform config to override the HW addr */
10887         i40e_get_platform_mac_addr(pdev, pf);
10888         if (!is_valid_ether_addr(hw->mac.addr)) {
10889                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10890                 err = -EIO;
10891                 goto err_mac_addr;
10892         }
10893         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10894         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10895         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10896         if (is_valid_ether_addr(hw->mac.port_addr))
10897                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10898 #ifdef I40E_FCOE
10899         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10900         if (err)
10901                 dev_info(&pdev->dev,
10902                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10903         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10904                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10905                          hw->mac.san_addr);
10906                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10907         }
10908         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10909 #endif /* I40E_FCOE */
10910
10911         pci_set_drvdata(pdev, pf);
10912         pci_save_state(pdev);
10913 #ifdef CONFIG_I40E_DCB
10914         err = i40e_init_pf_dcb(pf);
10915         if (err) {
10916                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10917                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10918                 /* Continue without DCB enabled */
10919         }
10920 #endif /* CONFIG_I40E_DCB */
10921
10922         /* set up periodic task facility */
10923         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10924         pf->service_timer_period = HZ;
10925
10926         INIT_WORK(&pf->service_task, i40e_service_task);
10927         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10928         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10929
10930         /* NVM bit on means WoL disabled for the port */
10931         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10932         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10933                 pf->wol_en = false;
10934         else
10935                 pf->wol_en = true;
10936         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10937
10938         /* set up the main switch operations */
10939         i40e_determine_queue_usage(pf);
10940         err = i40e_init_interrupt_scheme(pf);
10941         if (err)
10942                 goto err_switch_setup;
10943
10944         /* The number of VSIs reported by the FW is the minimum guaranteed
10945          * to us; HW supports far more and we share the remaining pool with
10946          * the other PFs. We allocate space for more than the guarantee with
10947          * the understanding that we might not get them all later.
10948          */
10949         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10950                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10951         else
10952                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10953
10954         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10955         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10956                           GFP_KERNEL);
10957         if (!pf->vsi) {
10958                 err = -ENOMEM;
10959                 goto err_switch_setup;
10960         }
10961
10962 #ifdef CONFIG_PCI_IOV
10963         /* prep for VF support */
10964         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10965             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10966             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10967                 if (pci_num_vf(pdev))
10968                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10969         }
10970 #endif
10971         err = i40e_setup_pf_switch(pf, false);
10972         if (err) {
10973                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10974                 goto err_vsis;
10975         }
10976
10977         /* Make sure flow control is set according to current settings */
10978         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10979         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10980                 dev_dbg(&pf->pdev->dev,
10981                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10982                         i40e_stat_str(hw, err),
10983                         i40e_aq_str(hw, hw->aq.asq_last_status));
10984         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10985                 dev_dbg(&pf->pdev->dev,
10986                         "Set fc with err %s aq_err %s on set_phy_config\n",
10987                         i40e_stat_str(hw, err),
10988                         i40e_aq_str(hw, hw->aq.asq_last_status));
10989         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10990                 dev_dbg(&pf->pdev->dev,
10991                         "Set fc with err %s aq_err %s on get_link_info\n",
10992                         i40e_stat_str(hw, err),
10993                         i40e_aq_str(hw, hw->aq.asq_last_status));
10994
10995         /* if FDIR VSI was set up, start it now */
10996         for (i = 0; i < pf->num_alloc_vsi; i++) {
10997                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10998                         i40e_vsi_open(pf->vsi[i]);
10999                         break;
11000                 }
11001         }
11002
11003         /* The driver only wants link up/down and module qualification
11004          * reports from firmware.  Note the negative logic.
11005          */
11006         err = i40e_aq_set_phy_int_mask(&pf->hw,
11007                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11008                                          I40E_AQ_EVENT_MEDIA_NA |
11009                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11010         if (err)
11011                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11012                          i40e_stat_str(&pf->hw, err),
11013                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11014
11015         /* Reconfigure hardware for allowing smaller MSS in the case
11016          * of TSO, so that we avoid the MDD being fired and causing
11017          * a reset in the case of small MSS+TSO.
11018          */
11019         val = rd32(hw, I40E_REG_MSS);
11020         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11021                 val &= ~I40E_REG_MSS_MIN_MASK;
11022                 val |= I40E_64BYTE_MSS;
11023                 wr32(hw, I40E_REG_MSS, val);
11024         }
11025
11026         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11027                 msleep(75);
11028                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11029                 if (err)
11030                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11031                                  i40e_stat_str(&pf->hw, err),
11032                                  i40e_aq_str(&pf->hw,
11033                                              pf->hw.aq.asq_last_status));
11034         }
11035         /* The main driver is (mostly) up and happy. We need to set this state
11036          * before setting up the misc vector or we get a race and the vector
11037          * ends up disabled forever.
11038          */
11039         clear_bit(__I40E_DOWN, &pf->state);
11040
11041         /* In case of MSIX we are going to setup the misc vector right here
11042          * to handle admin queue events etc. In case of legacy and MSI
11043          * the misc functionality and queue processing is combined in
11044          * the same vector and that gets setup at open.
11045          */
11046         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11047                 err = i40e_setup_misc_vector(pf);
11048                 if (err) {
11049                         dev_info(&pdev->dev,
11050                                  "setup of misc vector failed: %d\n", err);
11051                         goto err_vsis;
11052                 }
11053         }
11054
11055 #ifdef CONFIG_PCI_IOV
11056         /* prep for VF support */
11057         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11058             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11059             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11060                 /* disable link interrupts for VFs */
11061                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11062                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11063                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11064                 i40e_flush(hw);
11065
11066                 if (pci_num_vf(pdev)) {
11067                         dev_info(&pdev->dev,
11068                                  "Active VFs found, allocating resources.\n");
11069                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11070                         if (err)
11071                                 dev_info(&pdev->dev,
11072                                          "Error %d allocating resources for existing VFs\n",
11073                                          err);
11074                 }
11075         }
11076 #endif /* CONFIG_PCI_IOV */
11077
11078         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11079                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11080                                                       pf->num_iwarp_msix,
11081                                                       I40E_IWARP_IRQ_PILE_ID);
11082                 if (pf->iwarp_base_vector < 0) {
11083                         dev_info(&pdev->dev,
11084                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11085                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11086                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11087                 }
11088         }
11089
11090         i40e_dbg_pf_init(pf);
11091
11092         /* tell the firmware that we're starting */
11093         i40e_send_version(pf);
11094
11095         /* since everything's happy, start the service_task timer */
11096         mod_timer(&pf->service_timer,
11097                   round_jiffies(jiffies + pf->service_timer_period));
11098
11099         /* add this PF to client device list and launch a client service task */
11100         err = i40e_lan_add_device(pf);
11101         if (err)
11102                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11103                          err);
11104
11105 #ifdef I40E_FCOE
11106         /* create FCoE interface */
11107         i40e_fcoe_vsi_setup(pf);
11108
11109 #endif
11110 #define PCI_SPEED_SIZE 8
11111 #define PCI_WIDTH_SIZE 8
11112         /* Devices on the IOSF bus do not have this information
11113          * and will report PCI Gen 1 x 1 by default so don't bother
11114          * checking them.
11115          */
11116         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11117                 char speed[PCI_SPEED_SIZE] = "Unknown";
11118                 char width[PCI_WIDTH_SIZE] = "Unknown";
11119
11120                 /* Get the negotiated link width and speed from PCI config
11121                  * space
11122                  */
11123                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11124                                           &link_status);
11125
11126                 i40e_set_pci_config_data(hw, link_status);
11127
11128                 switch (hw->bus.speed) {
11129                 case i40e_bus_speed_8000:
11130                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11131                 case i40e_bus_speed_5000:
11132                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11133                 case i40e_bus_speed_2500:
11134                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11135                 default:
11136                         break;
11137                 }
11138                 switch (hw->bus.width) {
11139                 case i40e_bus_width_pcie_x8:
11140                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11141                 case i40e_bus_width_pcie_x4:
11142                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11143                 case i40e_bus_width_pcie_x2:
11144                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11145                 case i40e_bus_width_pcie_x1:
11146                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11147                 default:
11148                         break;
11149                 }
11150
11151                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11152                          speed, width);
11153
11154                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11155                     hw->bus.speed < i40e_bus_speed_8000) {
11156                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11157                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11158                 }
11159         }
11160
11161         /* get the requested speeds from the fw */
11162         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11163         if (err)
11164                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11165                         i40e_stat_str(&pf->hw, err),
11166                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11167         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11168
11169         /* get the supported phy types from the fw */
11170         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11171         if (err)
11172                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11173                         i40e_stat_str(&pf->hw, err),
11174                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11175         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11176
11177         /* Add a filter to drop all Flow control frames from any VSI from being
11178          * transmitted. By doing so we stop a malicious VF from sending out
11179          * PAUSE or PFC frames and potentially controlling traffic for other
11180          * PF/VF VSIs.
11181          * The FW can still send Flow control frames if enabled.
11182          */
11183         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11184                                                        pf->main_vsi_seid);
11185
11186         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11187             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11188                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11189
11190         /* print a string summarizing features */
11191         i40e_print_features(pf);
11192
11193         return 0;
11194
11195         /* Unwind what we've done if something failed in the setup */
11196 err_vsis:
11197         set_bit(__I40E_DOWN, &pf->state);
11198         i40e_clear_interrupt_scheme(pf);
11199         kfree(pf->vsi);
11200 err_switch_setup:
11201         i40e_reset_interrupt_capability(pf);
11202         del_timer_sync(&pf->service_timer);
11203 err_mac_addr:
11204 err_configure_lan_hmc:
11205         (void)i40e_shutdown_lan_hmc(hw);
11206 err_init_lan_hmc:
11207         kfree(pf->qp_pile);
11208 err_sw_init:
11209 err_adminq_setup:
11210 err_pf_reset:
11211         iounmap(hw->hw_addr);
11212 err_ioremap:
11213         kfree(pf);
11214 err_pf_alloc:
11215         pci_disable_pcie_error_reporting(pdev);
11216         pci_release_selected_regions(pdev,
11217                                      pci_select_bars(pdev, IORESOURCE_MEM));
11218 err_pci_reg:
11219 err_dma:
11220         pci_disable_device(pdev);
11221         return err;
11222 }
11223
11224 /**
11225  * i40e_remove - Device removal routine
11226  * @pdev: PCI device information struct
11227  *
11228  * i40e_remove is called by the PCI subsystem to alert the driver
11229  * that is should release a PCI device.  This could be caused by a
11230  * Hot-Plug event, or because the driver is going to be removed from
11231  * memory.
11232  **/
11233 static void i40e_remove(struct pci_dev *pdev)
11234 {
11235         struct i40e_pf *pf = pci_get_drvdata(pdev);
11236         struct i40e_hw *hw = &pf->hw;
11237         i40e_status ret_code;
11238         int i;
11239
11240         i40e_dbg_pf_exit(pf);
11241
11242         i40e_ptp_stop(pf);
11243
11244         /* Disable RSS in hw */
11245         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11246         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11247
11248         /* no more scheduling of any task */
11249         set_bit(__I40E_SUSPENDED, &pf->state);
11250         set_bit(__I40E_DOWN, &pf->state);
11251         if (pf->service_timer.data)
11252                 del_timer_sync(&pf->service_timer);
11253         if (pf->service_task.func)
11254                 cancel_work_sync(&pf->service_task);
11255
11256         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11257                 i40e_free_vfs(pf);
11258                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11259         }
11260
11261         i40e_fdir_teardown(pf);
11262
11263         /* If there is a switch structure or any orphans, remove them.
11264          * This will leave only the PF's VSI remaining.
11265          */
11266         for (i = 0; i < I40E_MAX_VEB; i++) {
11267                 if (!pf->veb[i])
11268                         continue;
11269
11270                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11271                     pf->veb[i]->uplink_seid == 0)
11272                         i40e_switch_branch_release(pf->veb[i]);
11273         }
11274
11275         /* Now we can shutdown the PF's VSI, just before we kill
11276          * adminq and hmc.
11277          */
11278         if (pf->vsi[pf->lan_vsi])
11279                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11280
11281         /* remove attached clients */
11282         ret_code = i40e_lan_del_device(pf);
11283         if (ret_code) {
11284                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11285                          ret_code);
11286         }
11287
11288         /* shutdown and destroy the HMC */
11289         if (hw->hmc.hmc_obj) {
11290                 ret_code = i40e_shutdown_lan_hmc(hw);
11291                 if (ret_code)
11292                         dev_warn(&pdev->dev,
11293                                  "Failed to destroy the HMC resources: %d\n",
11294                                  ret_code);
11295         }
11296
11297         /* shutdown the adminq */
11298         ret_code = i40e_shutdown_adminq(hw);
11299         if (ret_code)
11300                 dev_warn(&pdev->dev,
11301                          "Failed to destroy the Admin Queue resources: %d\n",
11302                          ret_code);
11303
11304         /* destroy the locks only once, here */
11305         mutex_destroy(&hw->aq.arq_mutex);
11306         mutex_destroy(&hw->aq.asq_mutex);
11307
11308         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11309         i40e_clear_interrupt_scheme(pf);
11310         for (i = 0; i < pf->num_alloc_vsi; i++) {
11311                 if (pf->vsi[i]) {
11312                         i40e_vsi_clear_rings(pf->vsi[i]);
11313                         i40e_vsi_clear(pf->vsi[i]);
11314                         pf->vsi[i] = NULL;
11315                 }
11316         }
11317
11318         for (i = 0; i < I40E_MAX_VEB; i++) {
11319                 kfree(pf->veb[i]);
11320                 pf->veb[i] = NULL;
11321         }
11322
11323         kfree(pf->qp_pile);
11324         kfree(pf->vsi);
11325
11326         iounmap(hw->hw_addr);
11327         kfree(pf);
11328         pci_release_selected_regions(pdev,
11329                                      pci_select_bars(pdev, IORESOURCE_MEM));
11330
11331         pci_disable_pcie_error_reporting(pdev);
11332         pci_disable_device(pdev);
11333 }
11334
11335 /**
11336  * i40e_pci_error_detected - warning that something funky happened in PCI land
11337  * @pdev: PCI device information struct
11338  *
11339  * Called to warn that something happened and the error handling steps
11340  * are in progress.  Allows the driver to quiesce things, be ready for
11341  * remediation.
11342  **/
11343 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11344                                                 enum pci_channel_state error)
11345 {
11346         struct i40e_pf *pf = pci_get_drvdata(pdev);
11347
11348         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11349
11350         /* shutdown all operations */
11351         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11352                 rtnl_lock();
11353                 i40e_prep_for_reset(pf);
11354                 rtnl_unlock();
11355         }
11356
11357         /* Request a slot reset */
11358         return PCI_ERS_RESULT_NEED_RESET;
11359 }
11360
11361 /**
11362  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11363  * @pdev: PCI device information struct
11364  *
11365  * Called to find if the driver can work with the device now that
11366  * the pci slot has been reset.  If a basic connection seems good
11367  * (registers are readable and have sane content) then return a
11368  * happy little PCI_ERS_RESULT_xxx.
11369  **/
11370 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11371 {
11372         struct i40e_pf *pf = pci_get_drvdata(pdev);
11373         pci_ers_result_t result;
11374         int err;
11375         u32 reg;
11376
11377         dev_dbg(&pdev->dev, "%s\n", __func__);
11378         if (pci_enable_device_mem(pdev)) {
11379                 dev_info(&pdev->dev,
11380                          "Cannot re-enable PCI device after reset.\n");
11381                 result = PCI_ERS_RESULT_DISCONNECT;
11382         } else {
11383                 pci_set_master(pdev);
11384                 pci_restore_state(pdev);
11385                 pci_save_state(pdev);
11386                 pci_wake_from_d3(pdev, false);
11387
11388                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11389                 if (reg == 0)
11390                         result = PCI_ERS_RESULT_RECOVERED;
11391                 else
11392                         result = PCI_ERS_RESULT_DISCONNECT;
11393         }
11394
11395         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11396         if (err) {
11397                 dev_info(&pdev->dev,
11398                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11399                          err);
11400                 /* non-fatal, continue */
11401         }
11402
11403         return result;
11404 }
11405
11406 /**
11407  * i40e_pci_error_resume - restart operations after PCI error recovery
11408  * @pdev: PCI device information struct
11409  *
11410  * Called to allow the driver to bring things back up after PCI error
11411  * and/or reset recovery has finished.
11412  **/
11413 static void i40e_pci_error_resume(struct pci_dev *pdev)
11414 {
11415         struct i40e_pf *pf = pci_get_drvdata(pdev);
11416
11417         dev_dbg(&pdev->dev, "%s\n", __func__);
11418         if (test_bit(__I40E_SUSPENDED, &pf->state))
11419                 return;
11420
11421         rtnl_lock();
11422         i40e_handle_reset_warning(pf);
11423         rtnl_unlock();
11424 }
11425
11426 /**
11427  * i40e_shutdown - PCI callback for shutting down
11428  * @pdev: PCI device information struct
11429  **/
11430 static void i40e_shutdown(struct pci_dev *pdev)
11431 {
11432         struct i40e_pf *pf = pci_get_drvdata(pdev);
11433         struct i40e_hw *hw = &pf->hw;
11434
11435         set_bit(__I40E_SUSPENDED, &pf->state);
11436         set_bit(__I40E_DOWN, &pf->state);
11437         rtnl_lock();
11438         i40e_prep_for_reset(pf);
11439         rtnl_unlock();
11440
11441         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11442         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11443
11444         del_timer_sync(&pf->service_timer);
11445         cancel_work_sync(&pf->service_task);
11446         i40e_fdir_teardown(pf);
11447
11448         rtnl_lock();
11449         i40e_prep_for_reset(pf);
11450         rtnl_unlock();
11451
11452         wr32(hw, I40E_PFPM_APM,
11453              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11454         wr32(hw, I40E_PFPM_WUFC,
11455              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11456
11457         i40e_clear_interrupt_scheme(pf);
11458
11459         if (system_state == SYSTEM_POWER_OFF) {
11460                 pci_wake_from_d3(pdev, pf->wol_en);
11461                 pci_set_power_state(pdev, PCI_D3hot);
11462         }
11463 }
11464
11465 #ifdef CONFIG_PM
11466 /**
11467  * i40e_suspend - PCI callback for moving to D3
11468  * @pdev: PCI device information struct
11469  **/
11470 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11471 {
11472         struct i40e_pf *pf = pci_get_drvdata(pdev);
11473         struct i40e_hw *hw = &pf->hw;
11474         int retval = 0;
11475
11476         set_bit(__I40E_SUSPENDED, &pf->state);
11477         set_bit(__I40E_DOWN, &pf->state);
11478
11479         rtnl_lock();
11480         i40e_prep_for_reset(pf);
11481         rtnl_unlock();
11482
11483         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11484         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11485
11486         i40e_stop_misc_vector(pf);
11487
11488         retval = pci_save_state(pdev);
11489         if (retval)
11490                 return retval;
11491
11492         pci_wake_from_d3(pdev, pf->wol_en);
11493         pci_set_power_state(pdev, PCI_D3hot);
11494
11495         return retval;
11496 }
11497
11498 /**
11499  * i40e_resume - PCI callback for waking up from D3
11500  * @pdev: PCI device information struct
11501  **/
11502 static int i40e_resume(struct pci_dev *pdev)
11503 {
11504         struct i40e_pf *pf = pci_get_drvdata(pdev);
11505         u32 err;
11506
11507         pci_set_power_state(pdev, PCI_D0);
11508         pci_restore_state(pdev);
11509         /* pci_restore_state() clears dev->state_saves, so
11510          * call pci_save_state() again to restore it.
11511          */
11512         pci_save_state(pdev);
11513
11514         err = pci_enable_device_mem(pdev);
11515         if (err) {
11516                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11517                 return err;
11518         }
11519         pci_set_master(pdev);
11520
11521         /* no wakeup events while running */
11522         pci_wake_from_d3(pdev, false);
11523
11524         /* handling the reset will rebuild the device state */
11525         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11526                 clear_bit(__I40E_DOWN, &pf->state);
11527                 rtnl_lock();
11528                 i40e_reset_and_rebuild(pf, false);
11529                 rtnl_unlock();
11530         }
11531
11532         return 0;
11533 }
11534
11535 #endif
11536 static const struct pci_error_handlers i40e_err_handler = {
11537         .error_detected = i40e_pci_error_detected,
11538         .slot_reset = i40e_pci_error_slot_reset,
11539         .resume = i40e_pci_error_resume,
11540 };
11541
11542 static struct pci_driver i40e_driver = {
11543         .name     = i40e_driver_name,
11544         .id_table = i40e_pci_tbl,
11545         .probe    = i40e_probe,
11546         .remove   = i40e_remove,
11547 #ifdef CONFIG_PM
11548         .suspend  = i40e_suspend,
11549         .resume   = i40e_resume,
11550 #endif
11551         .shutdown = i40e_shutdown,
11552         .err_handler = &i40e_err_handler,
11553         .sriov_configure = i40e_pci_sriov_configure,
11554 };
11555
11556 /**
11557  * i40e_init_module - Driver registration routine
11558  *
11559  * i40e_init_module is the first routine called when the driver is
11560  * loaded. All it does is register with the PCI subsystem.
11561  **/
11562 static int __init i40e_init_module(void)
11563 {
11564         pr_info("%s: %s - version %s\n", i40e_driver_name,
11565                 i40e_driver_string, i40e_driver_version_str);
11566         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11567
11568         /* we will see if single thread per module is enough for now,
11569          * it can't be any worse than using the system workqueue which
11570          * was already single threaded
11571          */
11572         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11573         if (!i40e_wq) {
11574                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11575                 return -ENOMEM;
11576         }
11577
11578         i40e_dbg_init();
11579         return pci_register_driver(&i40e_driver);
11580 }
11581 module_init(i40e_init_module);
11582
11583 /**
11584  * i40e_exit_module - Driver exit cleanup routine
11585  *
11586  * i40e_exit_module is called just before the driver is removed
11587  * from memory.
11588  **/
11589 static void __exit i40e_exit_module(void)
11590 {
11591         pci_unregister_driver(&i40e_driver);
11592         destroy_workqueue(i40e_wq);
11593         i40e_dbg_exit();
11594 }
11595 module_exit(i40e_exit_module);