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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 4
  42 #define DRV_VERSION_BUILD 7
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  59                               u16 rss_table_size, u16 rss_size);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, int, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL");
 100 MODULE_VERSION(DRV_VERSION);
 101
 102 /**
 103  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 104  * @hw:   pointer to the HW structure
 105  * @mem:  ptr to mem struct to fill out
 106  * @size: size of memory requested
 107  * @alignment: what to align the allocation to
 108  **/
 109 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 110                             u64 size, u32 alignment)
 111 {
 112         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 113
 114         mem->size = ALIGN(size, alignment);
 115         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 116                                       &mem->pa, GFP_KERNEL);
 117         if (!mem->va)
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 /**
 124  * i40e_free_dma_mem_d - OS specific memory free for shared code
 125  * @hw:   pointer to the HW structure
 126  * @mem:  ptr to mem struct to free
 127  **/
 128 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 129 {
 130         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 131
 132         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 133         mem->va = NULL;
 134         mem->pa = 0;
 135         mem->size = 0;
 136
 137         return 0;
 138 }
 139
 140 /**
 141  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 142  * @hw:   pointer to the HW structure
 143  * @mem:  ptr to mem struct to fill out
 144  * @size: size of memory requested
 145  **/
 146 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 147                              u32 size)
 148 {
 149         mem->size = size;
 150         mem->va = kzalloc(size, GFP_KERNEL);
 151
 152         if (!mem->va)
 153                 return -ENOMEM;
 154
 155         return 0;
 156 }
 157
 158 /**
 159  * i40e_free_virt_mem_d - OS specific memory free for shared code
 160  * @hw:   pointer to the HW structure
 161  * @mem:  ptr to mem struct to free
 162  **/
 163 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 164 {
 165         /* it's ok to kfree a NULL pointer */
 166         kfree(mem->va);
 167         mem->va = NULL;
 168         mem->size = 0;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_get_lump - find a lump of free generic resource
 175  * @pf: board private structure
 176  * @pile: the pile of resource to search
 177  * @needed: the number of items needed
 178  * @id: an owner id to stick on the items assigned
 179  *
 180  * Returns the base item index of the lump, or negative for error
 181  *
 182  * The search_hint trick and lack of advanced fit-finding only work
 183  * because we're highly likely to have all the same size lump requests.
 184  * Linear search time and any fragmentation should be minimal.
 185  **/
 186 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 187                          u16 needed, u16 id)
 188 {
 189         int ret = -ENOMEM;
 190         int i, j;
 191
 192         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 193                 dev_info(&pf->pdev->dev,
 194                          "param err: pile=%p needed=%d id=0x%04x\n",
 195                          pile, needed, id);
 196                 return -EINVAL;
 197         }
 198
 199         /* start the linear search with an imperfect hint */
 200         i = pile->search_hint;
 201         while (i < pile->num_entries) {
 202                 /* skip already allocated entries */
 203                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 204                         i++;
 205                         continue;
 206                 }
 207
 208                 /* do we have enough in this lump? */
 209                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 210                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 211                                 break;
 212                 }
 213
 214                 if (j == needed) {
 215                         /* there was enough, so assign it to the requestor */
 216                         for (j = 0; j < needed; j++)
 217                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 218                         ret = i;
 219                         pile->search_hint = i + j;
 220                         break;
 221                 }
 222
 223                 /* not enough, so skip over it and continue looking */
 224                 i += j;
 225         }
 226
 227         return ret;
 228 }
 229
 230 /**
 231  * i40e_put_lump - return a lump of generic resource
 232  * @pile: the pile of resource to search
 233  * @index: the base item index
 234  * @id: the owner id of the items assigned
 235  *
 236  * Returns the count of items in the lump
 237  **/
 238 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 239 {
 240         int valid_id = (id | I40E_PILE_VALID_BIT);
 241         int count = 0;
 242         int i;
 243
 244         if (!pile || index >= pile->num_entries)
 245                 return -EINVAL;
 246
 247         for (i = index;
 248              i < pile->num_entries && pile->list[i] == valid_id;
 249              i++) {
 250                 pile->list[i] = 0;
 251                 count++;
 252         }
 253
 254         if (count && index < pile->search_hint)
 255                 pile->search_hint = index;
 256
 257         return count;
 258 }
 259
 260 /**
 261  * i40e_find_vsi_from_id - searches for the vsi with the given id
 262  * @pf - the pf structure to search for the vsi
 263  * @id - id of the vsi it is searching for
 264  **/
 265 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 266 {
 267         int i;
 268
 269         for (i = 0; i < pf->num_alloc_vsi; i++)
 270                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 271                         return pf->vsi[i];
 272
 273         return NULL;
 274 }
 275
 276 /**
 277  * i40e_service_event_schedule - Schedule the service task to wake up
 278  * @pf: board private structure
 279  *
 280  * If not already scheduled, this puts the task into the work queue
 281  **/
 282 static void i40e_service_event_schedule(struct i40e_pf *pf)
 283 {
 284         if (!test_bit(__I40E_DOWN, &pf->state) &&
 285             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 286             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 287                 schedule_work(&pf->service_task);
 288 }
 289
 290 /**
 291  * i40e_tx_timeout - Respond to a Tx Hang
 292  * @netdev: network interface device structure
 293  *
 294  * If any port has noticed a Tx timeout, it is likely that the whole
 295  * device is munged, not just the one netdev port, so go for the full
 296  * reset.
 297  **/
 298 #ifdef I40E_FCOE
 299 void i40e_tx_timeout(struct net_device *netdev)
 300 #else
 301 static void i40e_tx_timeout(struct net_device *netdev)
 302 #endif
 303 {
 304         struct i40e_netdev_priv *np = netdev_priv(netdev);
 305         struct i40e_vsi *vsi = np->vsi;
 306         struct i40e_pf *pf = vsi->back;
 307         struct i40e_ring *tx_ring = NULL;
 308         unsigned int i, hung_queue = 0;
 309         u32 head, val;
 310
 311         pf->tx_timeout_count++;
 312
 313         /* find the stopped queue the same way the stack does */
 314         for (i = 0; i < netdev->num_tx_queues; i++) {
 315                 struct netdev_queue *q;
 316                 unsigned long trans_start;
 317
 318                 q = netdev_get_tx_queue(netdev, i);
 319                 trans_start = q->trans_start ? : netdev->trans_start;
 320                 if (netif_xmit_stopped(q) &&
 321                     time_after(jiffies,
 322                                (trans_start + netdev->watchdog_timeo))) {
 323                         hung_queue = i;
 324                         break;
 325                 }
 326         }
 327
 328         if (i == netdev->num_tx_queues) {
 329                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 330         } else {
 331                 /* now that we have an index, find the tx_ring struct */
 332                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 333                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 334                                 if (hung_queue ==
 335                                     vsi->tx_rings[i]->queue_index) {
 336                                         tx_ring = vsi->tx_rings[i];
 337                                         break;
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 344                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 345         else if (time_before(jiffies,
 346                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 347                 return;   /* don't do any new action before the next timeout */
 348
 349         if (tx_ring) {
 350                 head = i40e_get_head(tx_ring);
 351                 /* Read interrupt register */
 352                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 353                         val = rd32(&pf->hw,
 354                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 355                                                 tx_ring->vsi->base_vector - 1));
 356                 else
 357                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 358
 359                 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",
 360                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 361                             head, tx_ring->next_to_use,
 362                             readl(tx_ring->tail), val);
 363         }
 364
 365         pf->tx_timeout_last_recovery = jiffies;
 366         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 367                     pf->tx_timeout_recovery_level, hung_queue);
 368
 369         switch (pf->tx_timeout_recovery_level) {
 370         case 1:
 371                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 2:
 374                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 375                 break;
 376         case 3:
 377                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 378                 break;
 379         default:
 380                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 381                 break;
 382         }
 383
 384         i40e_service_event_schedule(pf);
 385         pf->tx_timeout_recovery_level++;
 386 }
 387
 388 /**
 389  * i40e_release_rx_desc - Store the new tail and head values
 390  * @rx_ring: ring to bump
 391  * @val: new head index
 392  **/
 393 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 394 {
 395         rx_ring->next_to_use = val;
 396
 397         /* Force memory writes to complete before letting h/w
 398          * know there are new descriptors to fetch.  (Only
 399          * applicable for weak-ordered memory model archs,
 400          * such as IA-64).
 401          */
 402         wmb();
 403         writel(val, rx_ring->tail);
 404 }
 405
 406 /**
 407  * i40e_get_vsi_stats_struct - Get System Network Statistics
 408  * @vsi: the VSI we care about
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 414 {
 415         return &vsi->net_stats;
 416 }
 417
 418 /**
 419  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 420  * @netdev: network interface device structure
 421  *
 422  * Returns the address of the device statistics structure.
 423  * The statistics are actually updated from the service task.
 424  **/
 425 #ifdef I40E_FCOE
 426 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 427                                              struct net_device *netdev,
 428                                              struct rtnl_link_stats64 *stats)
 429 #else
 430 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 431                                              struct net_device *netdev,
 432                                              struct rtnl_link_stats64 *stats)
 433 #endif
 434 {
 435         struct i40e_netdev_priv *np = netdev_priv(netdev);
 436         struct i40e_ring *tx_ring, *rx_ring;
 437         struct i40e_vsi *vsi = np->vsi;
 438         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 439         int i;
 440
 441         if (test_bit(__I40E_DOWN, &vsi->state))
 442                 return stats;
 443
 444         if (!vsi->tx_rings)
 445                 return stats;
 446
 447         rcu_read_lock();
 448         for (i = 0; i < vsi->num_queue_pairs; i++) {
 449                 u64 bytes, packets;
 450                 unsigned int start;
 451
 452                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 453                 if (!tx_ring)
 454                         continue;
 455
 456                 do {
 457                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 458                         packets = tx_ring->stats.packets;
 459                         bytes   = tx_ring->stats.bytes;
 460                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 461
 462                 stats->tx_packets += packets;
 463                 stats->tx_bytes   += bytes;
 464                 rx_ring = &tx_ring[1];
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 468                         packets = rx_ring->stats.packets;
 469                         bytes   = rx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 471
 472                 stats->rx_packets += packets;
 473                 stats->rx_bytes   += bytes;
 474         }
 475         rcu_read_unlock();
 476
 477         /* following stats updated by i40e_watchdog_subtask() */
 478         stats->multicast        = vsi_stats->multicast;
 479         stats->tx_errors        = vsi_stats->tx_errors;
 480         stats->tx_dropped       = vsi_stats->tx_dropped;
 481         stats->rx_errors        = vsi_stats->rx_errors;
 482         stats->rx_dropped       = vsi_stats->rx_dropped;
 483         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 484         stats->rx_length_errors = vsi_stats->rx_length_errors;
 485
 486         return stats;
 487 }
 488
 489 /**
 490  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 491  * @vsi: the VSI to have its stats reset
 492  **/
 493 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 494 {
 495         struct rtnl_link_stats64 *ns;
 496         int i;
 497
 498         if (!vsi)
 499                 return;
 500
 501         ns = i40e_get_vsi_stats_struct(vsi);
 502         memset(ns, 0, sizeof(*ns));
 503         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 504         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 505         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 506         if (vsi->rx_rings && vsi->rx_rings[0]) {
 507                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 508                         memset(&vsi->rx_rings[i]->stats, 0,
 509                                sizeof(vsi->rx_rings[i]->stats));
 510                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 511                                sizeof(vsi->rx_rings[i]->rx_stats));
 512                         memset(&vsi->tx_rings[i]->stats, 0,
 513                                sizeof(vsi->tx_rings[i]->stats));
 514                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 515                                sizeof(vsi->tx_rings[i]->tx_stats));
 516                 }
 517         }
 518         vsi->stat_offsets_loaded = false;
 519 }
 520
 521 /**
 522  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 523  * @pf: the PF to be reset
 524  **/
 525 void i40e_pf_reset_stats(struct i40e_pf *pf)
 526 {
 527         int i;
 528
 529         memset(&pf->stats, 0, sizeof(pf->stats));
 530         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 531         pf->stat_offsets_loaded = false;
 532
 533         for (i = 0; i < I40E_MAX_VEB; i++) {
 534                 if (pf->veb[i]) {
 535                         memset(&pf->veb[i]->stats, 0,
 536                                sizeof(pf->veb[i]->stats));
 537                         memset(&pf->veb[i]->stats_offsets, 0,
 538                                sizeof(pf->veb[i]->stats_offsets));
 539                         pf->veb[i]->stat_offsets_loaded = false;
 540                 }
 541         }
 542 }
 543
 544 /**
 545  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 546  * @hw: ptr to the hardware info
 547  * @hireg: the high 32 bit reg to read
 548  * @loreg: the low 32 bit reg to read
 549  * @offset_loaded: has the initial offset been loaded yet
 550  * @offset: ptr to current offset value
 551  * @stat: ptr to the stat
 552  *
 553  * Since the device stats are not reset at PFReset, they likely will not
 554  * be zeroed when the driver starts.  We'll save the first values read
 555  * and use them as offsets to be subtracted from the raw values in order
 556  * to report stats that count from zero.  In the process, we also manage
 557  * the potential roll-over.
 558  **/
 559 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 560                                bool offset_loaded, u64 *offset, u64 *stat)
 561 {
 562         u64 new_data;
 563
 564         if (hw->device_id == I40E_DEV_ID_QEMU) {
 565                 new_data = rd32(hw, loreg);
 566                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 567         } else {
 568                 new_data = rd64(hw, loreg);
 569         }
 570         if (!offset_loaded)
 571                 *offset = new_data;
 572         if (likely(new_data >= *offset))
 573                 *stat = new_data - *offset;
 574         else
 575                 *stat = (new_data + BIT_ULL(48)) - *offset;
 576         *stat &= 0xFFFFFFFFFFFFULL;
 577 }
 578
 579 /**
 580  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 581  * @hw: ptr to the hardware info
 582  * @reg: the hw reg to read
 583  * @offset_loaded: has the initial offset been loaded yet
 584  * @offset: ptr to current offset value
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 588                                bool offset_loaded, u64 *offset, u64 *stat)
 589 {
 590         u32 new_data;
 591
 592         new_data = rd32(hw, reg);
 593         if (!offset_loaded)
 594                 *offset = new_data;
 595         if (likely(new_data >= *offset))
 596                 *stat = (u32)(new_data - *offset);
 597         else
 598                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 599 }
 600
 601 /**
 602  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 603  * @vsi: the VSI to be updated
 604  **/
 605 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 606 {
 607         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 608         struct i40e_pf *pf = vsi->back;
 609         struct i40e_hw *hw = &pf->hw;
 610         struct i40e_eth_stats *oes;
 611         struct i40e_eth_stats *es;     /* device's eth stats */
 612
 613         es = &vsi->eth_stats;
 614         oes = &vsi->eth_stats_offsets;
 615
 616         /* Gather up the stats that the hw collects */
 617         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->tx_errors, &es->tx_errors);
 620         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_discards, &es->rx_discards);
 623         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 626         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->tx_errors, &es->tx_errors);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 631                            I40E_GLV_GORCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_bytes, &es->rx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 635                            I40E_GLV_UPRCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_unicast, &es->rx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 639                            I40E_GLV_MPRCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->rx_multicast, &es->rx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 643                            I40E_GLV_BPRCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->rx_broadcast, &es->rx_broadcast);
 646
 647         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 648                            I40E_GLV_GOTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_bytes, &es->tx_bytes);
 651         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 652                            I40E_GLV_UPTCL(stat_idx),
 653                            vsi->stat_offsets_loaded,
 654                            &oes->tx_unicast, &es->tx_unicast);
 655         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 656                            I40E_GLV_MPTCL(stat_idx),
 657                            vsi->stat_offsets_loaded,
 658                            &oes->tx_multicast, &es->tx_multicast);
 659         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 660                            I40E_GLV_BPTCL(stat_idx),
 661                            vsi->stat_offsets_loaded,
 662                            &oes->tx_broadcast, &es->tx_broadcast);
 663         vsi->stat_offsets_loaded = true;
 664 }
 665
 666 /**
 667  * i40e_update_veb_stats - Update Switch component statistics
 668  * @veb: the VEB being updated
 669  **/
 670 static void i40e_update_veb_stats(struct i40e_veb *veb)
 671 {
 672         struct i40e_pf *pf = veb->pf;
 673         struct i40e_hw *hw = &pf->hw;
 674         struct i40e_eth_stats *oes;
 675         struct i40e_eth_stats *es;     /* device's eth stats */
 676         struct i40e_veb_tc_stats *veb_oes;
 677         struct i40e_veb_tc_stats *veb_es;
 678         int i, idx = 0;
 679
 680         idx = veb->stats_idx;
 681         es = &veb->stats;
 682         oes = &veb->stats_offsets;
 683         veb_es = &veb->tc_stats;
 684         veb_oes = &veb->tc_stats_offsets;
 685
 686         /* Gather up the stats that the hw collects */
 687         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->tx_discards, &es->tx_discards);
 690         if (hw->revision_id > 0)
 691                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 692                                    veb->stat_offsets_loaded,
 693                                    &oes->rx_unknown_protocol,
 694                                    &es->rx_unknown_protocol);
 695         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_bytes, &es->rx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_unicast, &es->rx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_multicast, &es->rx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->rx_broadcast, &es->rx_broadcast);
 707
 708         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_bytes, &es->tx_bytes);
 711         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_unicast, &es->tx_unicast);
 714         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_multicast, &es->tx_multicast);
 717         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 718                            veb->stat_offsets_loaded,
 719                            &oes->tx_broadcast, &es->tx_broadcast);
 720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 722                                    I40E_GLVEBTC_RPCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_packets[i],
 725                                    &veb_es->tc_rx_packets[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 727                                    I40E_GLVEBTC_RBCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_rx_bytes[i],
 730                                    &veb_es->tc_rx_bytes[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 732                                    I40E_GLVEBTC_TPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_packets[i],
 735                                    &veb_es->tc_tx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 737                                    I40E_GLVEBTC_TBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_tx_bytes[i],
 740                                    &veb_es->tc_tx_bytes[i]);
 741         }
 742         veb->stat_offsets_loaded = true;
 743 }
 744
 745 #ifdef I40E_FCOE
 746 /**
 747  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 748  * @vsi: the VSI that is capable of doing FCoE
 749  **/
 750 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 751 {
 752         struct i40e_pf *pf = vsi->back;
 753         struct i40e_hw *hw = &pf->hw;
 754         struct i40e_fcoe_stats *ofs;
 755         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 756         int idx;
 757
 758         if (vsi->type != I40E_VSI_FCOE)
 759                 return;
 760
 761         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 762         fs = &vsi->fcoe_stats;
 763         ofs = &vsi->fcoe_stats_offsets;
 764
 765         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 768         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 771         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 774         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 777         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 780         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 783         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 786         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 789
 790         vsi->fcoe_stat_offsets_loaded = true;
 791 }
 792
 793 #endif
 794 /**
 795  * i40e_update_vsi_stats - Update the vsi statistics counters.
 796  * @vsi: the VSI to be updated
 797  *
 798  * There are a few instances where we store the same stat in a
 799  * couple of different structs.  This is partly because we have
 800  * the netdev stats that need to be filled out, which is slightly
 801  * different from the "eth_stats" defined by the chip and used in
 802  * VF communications.  We sort it out here.
 803  **/
 804 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 805 {
 806         struct i40e_pf *pf = vsi->back;
 807         struct rtnl_link_stats64 *ons;
 808         struct rtnl_link_stats64 *ns;   /* netdev stats */
 809         struct i40e_eth_stats *oes;
 810         struct i40e_eth_stats *es;     /* device's eth stats */
 811         u32 tx_restart, tx_busy;
 812         struct i40e_ring *p;
 813         u32 rx_page, rx_buf;
 814         u64 bytes, packets;
 815         unsigned int start;
 816         u64 tx_linearize;
 817         u64 tx_force_wb;
 818         u64 rx_p, rx_b;
 819         u64 tx_p, tx_b;
 820         u16 q;
 821
 822         if (test_bit(__I40E_DOWN, &vsi->state) ||
 823             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 824                 return;
 825
 826         ns = i40e_get_vsi_stats_struct(vsi);
 827         ons = &vsi->net_stats_offsets;
 828         es = &vsi->eth_stats;
 829         oes = &vsi->eth_stats_offsets;
 830
 831         /* Gather up the netdev and vsi stats that the driver collects
 832          * on the fly during packet processing
 833          */
 834         rx_b = rx_p = 0;
 835         tx_b = tx_p = 0;
 836         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 837         rx_page = 0;
 838         rx_buf = 0;
 839         rcu_read_lock();
 840         for (q = 0; q < vsi->num_queue_pairs; q++) {
 841                 /* locate Tx ring */
 842                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 843
 844                 do {
 845                         start = u64_stats_fetch_begin_irq(&p->syncp);
 846                         packets = p->stats.packets;
 847                         bytes = p->stats.bytes;
 848                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 849                 tx_b += bytes;
 850                 tx_p += packets;
 851                 tx_restart += p->tx_stats.restart_queue;
 852                 tx_busy += p->tx_stats.tx_busy;
 853                 tx_linearize += p->tx_stats.tx_linearize;
 854                 tx_force_wb += p->tx_stats.tx_force_wb;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->tx_linearize = tx_linearize;
 872         vsi->tx_force_wb = tx_force_wb;
 873         vsi->rx_page_failed = rx_page;
 874         vsi->rx_buf_failed = rx_buf;
 875
 876         ns->rx_packets = rx_p;
 877         ns->rx_bytes = rx_b;
 878         ns->tx_packets = tx_p;
 879         ns->tx_bytes = tx_b;
 880
 881         /* update netdev stats from eth stats */
 882         i40e_update_eth_stats(vsi);
 883         ons->tx_errors = oes->tx_errors;
 884         ns->tx_errors = es->tx_errors;
 885         ons->multicast = oes->rx_multicast;
 886         ns->multicast = es->rx_multicast;
 887         ons->rx_dropped = oes->rx_discards;
 888         ns->rx_dropped = es->rx_discards;
 889         ons->tx_dropped = oes->tx_discards;
 890         ns->tx_dropped = es->tx_discards;
 891
 892         /* pull in a couple PF stats if this is the main vsi */
 893         if (vsi == pf->vsi[pf->lan_vsi]) {
 894                 ns->rx_crc_errors = pf->stats.crc_errors;
 895                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 896                 ns->rx_length_errors = pf->stats.rx_length_errors;
 897         }
 898 }
 899
 900 /**
 901  * i40e_update_pf_stats - Update the PF statistics counters.
 902  * @pf: the PF to be updated
 903  **/
 904 static void i40e_update_pf_stats(struct i40e_pf *pf)
 905 {
 906         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 907         struct i40e_hw_port_stats *nsd = &pf->stats;
 908         struct i40e_hw *hw = &pf->hw;
 909         u32 val;
 910         int i;
 911
 912         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 913                            I40E_GLPRT_GORCL(hw->port),
 914                            pf->stat_offsets_loaded,
 915                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 916         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 917                            I40E_GLPRT_GOTCL(hw->port),
 918                            pf->stat_offsets_loaded,
 919                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 920         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 921                            pf->stat_offsets_loaded,
 922                            &osd->eth.rx_discards,
 923                            &nsd->eth.rx_discards);
 924         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 925                            I40E_GLPRT_UPRCL(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->eth.rx_unicast,
 928                            &nsd->eth.rx_unicast);
 929         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 930                            I40E_GLPRT_MPRCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.rx_multicast,
 933                            &nsd->eth.rx_multicast);
 934         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 935                            I40E_GLPRT_BPRCL(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.rx_broadcast,
 938                            &nsd->eth.rx_broadcast);
 939         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 940                            I40E_GLPRT_UPTCL(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->eth.tx_unicast,
 943                            &nsd->eth.tx_unicast);
 944         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 945                            I40E_GLPRT_MPTCL(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->eth.tx_multicast,
 948                            &nsd->eth.tx_multicast);
 949         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 950                            I40E_GLPRT_BPTCL(hw->port),
 951                            pf->stat_offsets_loaded,
 952                            &osd->eth.tx_broadcast,
 953                            &nsd->eth.tx_broadcast);
 954
 955         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->tx_dropped_link_down,
 958                            &nsd->tx_dropped_link_down);
 959
 960         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->crc_errors, &nsd->crc_errors);
 963
 964         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->illegal_bytes, &nsd->illegal_bytes);
 967
 968         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->mac_local_faults,
 971                            &nsd->mac_local_faults);
 972         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->mac_remote_faults,
 975                            &nsd->mac_remote_faults);
 976
 977         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->rx_length_errors,
 980                            &nsd->rx_length_errors);
 981
 982         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->link_xon_rx, &nsd->link_xon_rx);
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_tx, &nsd->link_xon_tx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 991         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 994
 995         for (i = 0; i < 8; i++) {
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xoff_rx[i],
 999                                    &nsd->priority_xoff_rx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xon_rx[i],
1003                                    &nsd->priority_xon_rx[i]);
1004                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1005                                    pf->stat_offsets_loaded,
1006                                    &osd->priority_xon_tx[i],
1007                                    &nsd->priority_xon_tx[i]);
1008                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1009                                    pf->stat_offsets_loaded,
1010                                    &osd->priority_xoff_tx[i],
1011                                    &nsd->priority_xoff_tx[i]);
1012                 i40e_stat_update32(hw,
1013                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1014                                    pf->stat_offsets_loaded,
1015                                    &osd->priority_xon_2_xoff[i],
1016                                    &nsd->priority_xon_2_xoff[i]);
1017         }
1018
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1020                            I40E_GLPRT_PRC64L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_64, &nsd->rx_size_64);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1024                            I40E_GLPRT_PRC127L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_127, &nsd->rx_size_127);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1028                            I40E_GLPRT_PRC255L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_255, &nsd->rx_size_255);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1032                            I40E_GLPRT_PRC511L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_511, &nsd->rx_size_511);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1036                            I40E_GLPRT_PRC1023L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_1023, &nsd->rx_size_1023);
1039         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1040                            I40E_GLPRT_PRC1522L(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->rx_size_1522, &nsd->rx_size_1522);
1043         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1044                            I40E_GLPRT_PRC9522L(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->rx_size_big, &nsd->rx_size_big);
1047
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1049                            I40E_GLPRT_PTC64L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_64, &nsd->tx_size_64);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1053                            I40E_GLPRT_PTC127L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_127, &nsd->tx_size_127);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1057                            I40E_GLPRT_PTC255L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_255, &nsd->tx_size_255);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1061                            I40E_GLPRT_PTC511L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_511, &nsd->tx_size_511);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1065                            I40E_GLPRT_PTC1023L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_1023, &nsd->tx_size_1023);
1068         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1069                            I40E_GLPRT_PTC1522L(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->tx_size_1522, &nsd->tx_size_1522);
1072         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1073                            I40E_GLPRT_PTC9522L(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->tx_size_big, &nsd->tx_size_big);
1076
1077         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_undersize, &nsd->rx_undersize);
1080         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_fragments, &nsd->rx_fragments);
1083         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_oversize, &nsd->rx_oversize);
1086         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_jabber, &nsd->rx_jabber);
1089
1090         /* FDIR stats */
1091         i40e_stat_update32(hw,
1092                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1093                            pf->stat_offsets_loaded,
1094                            &osd->fd_atr_match, &nsd->fd_atr_match);
1095         i40e_stat_update32(hw,
1096                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1097                            pf->stat_offsets_loaded,
1098                            &osd->fd_sb_match, &nsd->fd_sb_match);
1099         i40e_stat_update32(hw,
1100                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1101                       pf->stat_offsets_loaded,
1102                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1103
1104         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1105         nsd->tx_lpi_status =
1106                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1107                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1108         nsd->rx_lpi_status =
1109                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1110                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1111         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1114         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1115                            pf->stat_offsets_loaded,
1116                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1117
1118         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1119             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1120                 nsd->fd_sb_status = true;
1121         else
1122                 nsd->fd_sb_status = false;
1123
1124         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1125             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1126                 nsd->fd_atr_status = true;
1127         else
1128                 nsd->fd_atr_status = false;
1129
1130         pf->stat_offsets_loaded = true;
1131 }
1132
1133 /**
1134  * i40e_update_stats - Update the various statistics counters.
1135  * @vsi: the VSI to be updated
1136  *
1137  * Update the various stats for this VSI and its related entities.
1138  **/
1139 void i40e_update_stats(struct i40e_vsi *vsi)
1140 {
1141         struct i40e_pf *pf = vsi->back;
1142
1143         if (vsi == pf->vsi[pf->lan_vsi])
1144                 i40e_update_pf_stats(pf);
1145
1146         i40e_update_vsi_stats(vsi);
1147 #ifdef I40E_FCOE
1148         i40e_update_fcoe_stats(vsi);
1149 #endif
1150 }
1151
1152 /**
1153  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1154  * @vsi: the VSI to be searched
1155  * @macaddr: the MAC address
1156  * @vlan: the vlan
1157  * @is_vf: make sure its a VF filter, else doesn't matter
1158  * @is_netdev: make sure its a netdev filter, else doesn't matter
1159  *
1160  * Returns ptr to the filter object or NULL
1161  **/
1162 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1163                                                 u8 *macaddr, s16 vlan,
1164                                                 bool is_vf, bool is_netdev)
1165 {
1166         struct i40e_mac_filter *f;
1167
1168         if (!vsi || !macaddr)
1169                 return NULL;
1170
1171         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1172                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1173                     (vlan == f->vlan)    &&
1174                     (!is_vf || f->is_vf) &&
1175                     (!is_netdev || f->is_netdev))
1176                         return f;
1177         }
1178         return NULL;
1179 }
1180
1181 /**
1182  * i40e_find_mac - Find a mac addr in the macvlan filters list
1183  * @vsi: the VSI to be searched
1184  * @macaddr: the MAC address we are searching for
1185  * @is_vf: make sure its a VF filter, else doesn't matter
1186  * @is_netdev: make sure its a netdev filter, else doesn't matter
1187  *
1188  * Returns the first filter with the provided MAC address or NULL if
1189  * MAC address was not found
1190  **/
1191 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1192                                       bool is_vf, bool is_netdev)
1193 {
1194         struct i40e_mac_filter *f;
1195
1196         if (!vsi || !macaddr)
1197                 return NULL;
1198
1199         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1200                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1201                     (!is_vf || f->is_vf) &&
1202                     (!is_netdev || f->is_netdev))
1203                         return f;
1204         }
1205         return NULL;
1206 }
1207
1208 /**
1209  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1210  * @vsi: the VSI to be searched
1211  *
1212  * Returns true if VSI is in vlan mode or false otherwise
1213  **/
1214 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1215 {
1216         struct i40e_mac_filter *f;
1217
1218         /* Only -1 for all the filters denotes not in vlan mode
1219          * so we have to go through all the list in order to make sure
1220          */
1221         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1222                 if (f->vlan >= 0 || vsi->info.pvid)
1223                         return true;
1224         }
1225
1226         return false;
1227 }
1228
1229 /**
1230  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1231  * @vsi: the VSI to be searched
1232  * @macaddr: the mac address to be filtered
1233  * @is_vf: true if it is a VF
1234  * @is_netdev: true if it is a netdev
1235  *
1236  * Goes through all the macvlan filters and adds a
1237  * macvlan filter for each unique vlan that already exists
1238  *
1239  * Returns first filter found on success, else NULL
1240  **/
1241 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1242                                              bool is_vf, bool is_netdev)
1243 {
1244         struct i40e_mac_filter *f;
1245
1246         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1247                 if (vsi->info.pvid)
1248                         f->vlan = le16_to_cpu(vsi->info.pvid);
1249                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1250                                       is_vf, is_netdev)) {
1251                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1252                                              is_vf, is_netdev))
1253                                 return NULL;
1254                 }
1255         }
1256
1257         return list_first_entry_or_null(&vsi->mac_filter_list,
1258                                         struct i40e_mac_filter, list);
1259 }
1260
1261 /**
1262  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1263  * @vsi: the PF Main VSI - inappropriate for any other VSI
1264  * @macaddr: the MAC address
1265  *
1266  * Some older firmware configurations set up a default promiscuous VLAN
1267  * filter that needs to be removed.
1268  **/
1269 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1270 {
1271         struct i40e_aqc_remove_macvlan_element_data element;
1272         struct i40e_pf *pf = vsi->back;
1273         i40e_status ret;
1274
1275         /* Only appropriate for the PF main VSI */
1276         if (vsi->type != I40E_VSI_MAIN)
1277                 return -EINVAL;
1278
1279         memset(&element, 0, sizeof(element));
1280         ether_addr_copy(element.mac_addr, macaddr);
1281         element.vlan_tag = 0;
1282         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1283                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1284         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1285         if (ret)
1286                 return -ENOENT;
1287
1288         return 0;
1289 }
1290
1291 /**
1292  * i40e_add_filter - Add a mac/vlan filter to the VSI
1293  * @vsi: the VSI to be searched
1294  * @macaddr: the MAC address
1295  * @vlan: the vlan
1296  * @is_vf: make sure its a VF filter, else doesn't matter
1297  * @is_netdev: make sure its a netdev filter, else doesn't matter
1298  *
1299  * Returns ptr to the filter object or NULL when no memory available.
1300  *
1301  * NOTE: This function is expected to be called with mac_filter_list_lock
1302  * being held.
1303  **/
1304 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1305                                         u8 *macaddr, s16 vlan,
1306                                         bool is_vf, bool is_netdev)
1307 {
1308         struct i40e_mac_filter *f;
1309
1310         if (!vsi || !macaddr)
1311                 return NULL;
1312
1313         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1314         if (!f) {
1315                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1316                 if (!f)
1317                         goto add_filter_out;
1318
1319                 ether_addr_copy(f->macaddr, macaddr);
1320                 f->vlan = vlan;
1321                 f->changed = true;
1322
1323                 INIT_LIST_HEAD(&f->list);
1324                 list_add(&f->list, &vsi->mac_filter_list);
1325         }
1326
1327         /* increment counter and add a new flag if needed */
1328         if (is_vf) {
1329                 if (!f->is_vf) {
1330                         f->is_vf = true;
1331                         f->counter++;
1332                 }
1333         } else if (is_netdev) {
1334                 if (!f->is_netdev) {
1335                         f->is_netdev = true;
1336                         f->counter++;
1337                 }
1338         } else {
1339                 f->counter++;
1340         }
1341
1342         /* changed tells sync_filters_subtask to
1343          * push the filter down to the firmware
1344          */
1345         if (f->changed) {
1346                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1347                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1348         }
1349
1350 add_filter_out:
1351         return f;
1352 }
1353
1354 /**
1355  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1356  * @vsi: the VSI to be searched
1357  * @macaddr: the MAC address
1358  * @vlan: the vlan
1359  * @is_vf: make sure it's a VF filter, else doesn't matter
1360  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1361  *
1362  * NOTE: This function is expected to be called with mac_filter_list_lock
1363  * being held.
1364  **/
1365 void i40e_del_filter(struct i40e_vsi *vsi,
1366                      u8 *macaddr, s16 vlan,
1367                      bool is_vf, bool is_netdev)
1368 {
1369         struct i40e_mac_filter *f;
1370
1371         if (!vsi || !macaddr)
1372                 return;
1373
1374         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1375         if (!f || f->counter == 0)
1376                 return;
1377
1378         if (is_vf) {
1379                 if (f->is_vf) {
1380                         f->is_vf = false;
1381                         f->counter--;
1382                 }
1383         } else if (is_netdev) {
1384                 if (f->is_netdev) {
1385                         f->is_netdev = false;
1386                         f->counter--;
1387                 }
1388         } else {
1389                 /* make sure we don't remove a filter in use by VF or netdev */
1390                 int min_f = 0;
1391
1392                 min_f += (f->is_vf ? 1 : 0);
1393                 min_f += (f->is_netdev ? 1 : 0);
1394
1395                 if (f->counter > min_f)
1396                         f->counter--;
1397         }
1398
1399         /* counter == 0 tells sync_filters_subtask to
1400          * remove the filter from the firmware's list
1401          */
1402         if (f->counter == 0) {
1403                 f->changed = true;
1404                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1405                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1406         }
1407 }
1408
1409 /**
1410  * i40e_set_mac - NDO callback to set mac address
1411  * @netdev: network interface device structure
1412  * @p: pointer to an address structure
1413  *
1414  * Returns 0 on success, negative on failure
1415  **/
1416 #ifdef I40E_FCOE
1417 int i40e_set_mac(struct net_device *netdev, void *p)
1418 #else
1419 static int i40e_set_mac(struct net_device *netdev, void *p)
1420 #endif
1421 {
1422         struct i40e_netdev_priv *np = netdev_priv(netdev);
1423         struct i40e_vsi *vsi = np->vsi;
1424         struct i40e_pf *pf = vsi->back;
1425         struct i40e_hw *hw = &pf->hw;
1426         struct sockaddr *addr = p;
1427         struct i40e_mac_filter *f;
1428
1429         if (!is_valid_ether_addr(addr->sa_data))
1430                 return -EADDRNOTAVAIL;
1431
1432         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1433                 netdev_info(netdev, "already using mac address %pM\n",
1434                             addr->sa_data);
1435                 return 0;
1436         }
1437
1438         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1439             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1440                 return -EADDRNOTAVAIL;
1441
1442         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1443                 netdev_info(netdev, "returning to hw mac address %pM\n",
1444                             hw->mac.addr);
1445         else
1446                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1447
1448         if (vsi->type == I40E_VSI_MAIN) {
1449                 i40e_status ret;
1450
1451                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1452                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1453                                                 addr->sa_data, NULL);
1454                 if (ret) {
1455                         netdev_info(netdev,
1456                                     "Addr change for Main VSI failed: %d\n",
1457                                     ret);
1458                         return -EADDRNOTAVAIL;
1459                 }
1460         }
1461
1462         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1463                 struct i40e_aqc_remove_macvlan_element_data element;
1464
1465                 memset(&element, 0, sizeof(element));
1466                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1467                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1468                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1469         } else {
1470                 spin_lock_bh(&vsi->mac_filter_list_lock);
1471                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1472                                 false, false);
1473                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1474         }
1475
1476         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1477                 struct i40e_aqc_add_macvlan_element_data element;
1478
1479                 memset(&element, 0, sizeof(element));
1480                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1481                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1482                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1483         } else {
1484                 spin_lock_bh(&vsi->mac_filter_list_lock);
1485                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1486                                     false, false);
1487                 if (f)
1488                         f->is_laa = true;
1489                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1490         }
1491
1492         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1493
1494         return i40e_sync_vsi_filters(vsi);
1495 }
1496
1497 /**
1498  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1499  * @vsi: the VSI being setup
1500  * @ctxt: VSI context structure
1501  * @enabled_tc: Enabled TCs bitmap
1502  * @is_add: True if called before Add VSI
1503  *
1504  * Setup VSI queue mapping for enabled traffic classes.
1505  **/
1506 #ifdef I40E_FCOE
1507 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1508                               struct i40e_vsi_context *ctxt,
1509                               u8 enabled_tc,
1510                               bool is_add)
1511 #else
1512 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1513                                      struct i40e_vsi_context *ctxt,
1514                                      u8 enabled_tc,
1515                                      bool is_add)
1516 #endif
1517 {
1518         struct i40e_pf *pf = vsi->back;
1519         u16 sections = 0;
1520         u8 netdev_tc = 0;
1521         u16 numtc = 0;
1522         u16 qcount;
1523         u8 offset;
1524         u16 qmap;
1525         int i;
1526         u16 num_tc_qps = 0;
1527
1528         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1529         offset = 0;
1530
1531         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1532                 /* Find numtc from enabled TC bitmap */
1533                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1534                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1535                                 numtc++;
1536                 }
1537                 if (!numtc) {
1538                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1539                         numtc = 1;
1540                 }
1541         } else {
1542                 /* At least TC0 is enabled in case of non-DCB case */
1543                 numtc = 1;
1544         }
1545
1546         vsi->tc_config.numtc = numtc;
1547         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1548         /* Number of queues per enabled TC */
1549         /* In MFP case we can have a much lower count of MSIx
1550          * vectors available and so we need to lower the used
1551          * q count.
1552          */
1553         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1554                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1555         else
1556                 qcount = vsi->alloc_queue_pairs;
1557         num_tc_qps = qcount / numtc;
1558         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1559
1560         /* Setup queue offset/count for all TCs for given VSI */
1561         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1562                 /* See if the given TC is enabled for the given VSI */
1563                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1564                         /* TC is enabled */
1565                         int pow, num_qps;
1566
1567                         switch (vsi->type) {
1568                         case I40E_VSI_MAIN:
1569                                 qcount = min_t(int, pf->alloc_rss_size,
1570                                                num_tc_qps);
1571                                 break;
1572 #ifdef I40E_FCOE
1573                         case I40E_VSI_FCOE:
1574                                 qcount = num_tc_qps;
1575                                 break;
1576 #endif
1577                         case I40E_VSI_FDIR:
1578                         case I40E_VSI_SRIOV:
1579                         case I40E_VSI_VMDQ2:
1580                         default:
1581                                 qcount = num_tc_qps;
1582                                 WARN_ON(i != 0);
1583                                 break;
1584                         }
1585                         vsi->tc_config.tc_info[i].qoffset = offset;
1586                         vsi->tc_config.tc_info[i].qcount = qcount;
1587
1588                         /* find the next higher power-of-2 of num queue pairs */
1589                         num_qps = qcount;
1590                         pow = 0;
1591                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1592                                 pow++;
1593                                 num_qps >>= 1;
1594                         }
1595
1596                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1597                         qmap =
1598                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1599                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1600
1601                         offset += qcount;
1602                 } else {
1603                         /* TC is not enabled so set the offset to
1604                          * default queue and allocate one queue
1605                          * for the given TC.
1606                          */
1607                         vsi->tc_config.tc_info[i].qoffset = 0;
1608                         vsi->tc_config.tc_info[i].qcount = 1;
1609                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1610
1611                         qmap = 0;
1612                 }
1613                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1614         }
1615
1616         /* Set actual Tx/Rx queue pairs */
1617         vsi->num_queue_pairs = offset;
1618         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1619                 if (vsi->req_queue_pairs > 0)
1620                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1621                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1622                         vsi->num_queue_pairs = pf->num_lan_msix;
1623         }
1624
1625         /* Scheduler section valid can only be set for ADD VSI */
1626         if (is_add) {
1627                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1628
1629                 ctxt->info.up_enable_bits = enabled_tc;
1630         }
1631         if (vsi->type == I40E_VSI_SRIOV) {
1632                 ctxt->info.mapping_flags |=
1633                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1634                 for (i = 0; i < vsi->num_queue_pairs; i++)
1635                         ctxt->info.queue_mapping[i] =
1636                                                cpu_to_le16(vsi->base_queue + i);
1637         } else {
1638                 ctxt->info.mapping_flags |=
1639                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1640                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1641         }
1642         ctxt->info.valid_sections |= cpu_to_le16(sections);
1643 }
1644
1645 /**
1646  * i40e_set_rx_mode - NDO callback to set the netdev filters
1647  * @netdev: network interface device structure
1648  **/
1649 #ifdef I40E_FCOE
1650 void i40e_set_rx_mode(struct net_device *netdev)
1651 #else
1652 static void i40e_set_rx_mode(struct net_device *netdev)
1653 #endif
1654 {
1655         struct i40e_netdev_priv *np = netdev_priv(netdev);
1656         struct i40e_mac_filter *f, *ftmp;
1657         struct i40e_vsi *vsi = np->vsi;
1658         struct netdev_hw_addr *uca;
1659         struct netdev_hw_addr *mca;
1660         struct netdev_hw_addr *ha;
1661
1662         spin_lock_bh(&vsi->mac_filter_list_lock);
1663
1664         /* add addr if not already in the filter list */
1665         netdev_for_each_uc_addr(uca, netdev) {
1666                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1667                         if (i40e_is_vsi_in_vlan(vsi))
1668                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1669                                                      false, true);
1670                         else
1671                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1672                                                 false, true);
1673                 }
1674         }
1675
1676         netdev_for_each_mc_addr(mca, netdev) {
1677                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1678                         if (i40e_is_vsi_in_vlan(vsi))
1679                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1680                                                      false, true);
1681                         else
1682                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1683                                                 false, true);
1684                 }
1685         }
1686
1687         /* remove filter if not in netdev list */
1688         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1689
1690                 if (!f->is_netdev)
1691                         continue;
1692
1693                 netdev_for_each_mc_addr(mca, netdev)
1694                         if (ether_addr_equal(mca->addr, f->macaddr))
1695                                 goto bottom_of_search_loop;
1696
1697                 netdev_for_each_uc_addr(uca, netdev)
1698                         if (ether_addr_equal(uca->addr, f->macaddr))
1699                                 goto bottom_of_search_loop;
1700
1701                 for_each_dev_addr(netdev, ha)
1702                         if (ether_addr_equal(ha->addr, f->macaddr))
1703                                 goto bottom_of_search_loop;
1704
1705                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1706                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1707
1708 bottom_of_search_loop:
1709                 continue;
1710         }
1711         spin_unlock_bh(&vsi->mac_filter_list_lock);
1712
1713         /* check for other flag changes */
1714         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1715                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1716                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1717         }
1718 }
1719
1720 /**
1721  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1722  * @src: source MAC filter entry to be clones
1723  *
1724  * Returns the pointer to newly cloned MAC filter entry or NULL
1725  * in case of error
1726  **/
1727 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1728                                         struct i40e_mac_filter *src)
1729 {
1730         struct i40e_mac_filter *f;
1731
1732         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1733         if (!f)
1734                 return NULL;
1735         *f = *src;
1736
1737         INIT_LIST_HEAD(&f->list);
1738
1739         return f;
1740 }
1741
1742 /**
1743  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1744  * @vsi: pointer to vsi struct
1745  * @from: Pointer to list which contains MAC filter entries - changes to
1746  *        those entries needs to be undone.
1747  *
1748  * MAC filter entries from list were slated to be removed from device.
1749  **/
1750 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1751                                          struct list_head *from)
1752 {
1753         struct i40e_mac_filter *f, *ftmp;
1754
1755         list_for_each_entry_safe(f, ftmp, from, list) {
1756                 f->changed = true;
1757                 /* Move the element back into MAC filter list*/
1758                 list_move_tail(&f->list, &vsi->mac_filter_list);
1759         }
1760 }
1761
1762 /**
1763  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1764  * @vsi: pointer to vsi struct
1765  *
1766  * MAC filter entries from list were slated to be added from device.
1767  **/
1768 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1769 {
1770         struct i40e_mac_filter *f, *ftmp;
1771
1772         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1773                 if (!f->changed && f->counter)
1774                         f->changed = true;
1775         }
1776 }
1777
1778 /**
1779  * i40e_cleanup_add_list - Deletes the element from add list and release
1780  *                      memory
1781  * @add_list: Pointer to list which contains MAC filter entries
1782  **/
1783 static void i40e_cleanup_add_list(struct list_head *add_list)
1784 {
1785         struct i40e_mac_filter *f, *ftmp;
1786
1787         list_for_each_entry_safe(f, ftmp, add_list, list) {
1788                 list_del(&f->list);
1789                 kfree(f);
1790         }
1791 }
1792
1793 /**
1794  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1795  * @vsi: ptr to the VSI
1796  *
1797  * Push any outstanding VSI filter changes through the AdminQ.
1798  *
1799  * Returns 0 or error value
1800  **/
1801 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1802 {
1803         struct list_head tmp_del_list, tmp_add_list;
1804         struct i40e_mac_filter *f, *ftmp, *fclone;
1805         bool promisc_forced_on = false;
1806         bool add_happened = false;
1807         int filter_list_len = 0;
1808         u32 changed_flags = 0;
1809         i40e_status aq_ret = 0;
1810         bool err_cond = false;
1811         int retval = 0;
1812         struct i40e_pf *pf;
1813         int num_add = 0;
1814         int num_del = 0;
1815         int aq_err = 0;
1816         u16 cmd_flags;
1817
1818         /* empty array typed pointers, kcalloc later */
1819         struct i40e_aqc_add_macvlan_element_data *add_list;
1820         struct i40e_aqc_remove_macvlan_element_data *del_list;
1821
1822         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1823                 usleep_range(1000, 2000);
1824         pf = vsi->back;
1825
1826         if (vsi->netdev) {
1827                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1828                 vsi->current_netdev_flags = vsi->netdev->flags;
1829         }
1830
1831         INIT_LIST_HEAD(&tmp_del_list);
1832         INIT_LIST_HEAD(&tmp_add_list);
1833
1834         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1835                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1836
1837                 spin_lock_bh(&vsi->mac_filter_list_lock);
1838                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1839                         if (!f->changed)
1840                                 continue;
1841
1842                         if (f->counter != 0)
1843                                 continue;
1844                         f->changed = false;
1845
1846                         /* Move the element into temporary del_list */
1847                         list_move_tail(&f->list, &tmp_del_list);
1848                 }
1849
1850                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1851                         if (!f->changed)
1852                                 continue;
1853
1854                         if (f->counter == 0)
1855                                 continue;
1856                         f->changed = false;
1857
1858                         /* Clone MAC filter entry and add into temporary list */
1859                         fclone = i40e_mac_filter_entry_clone(f);
1860                         if (!fclone) {
1861                                 err_cond = true;
1862                                 break;
1863                         }
1864                         list_add_tail(&fclone->list, &tmp_add_list);
1865                 }
1866
1867                 /* if failed to clone MAC filter entry - undo */
1868                 if (err_cond) {
1869                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1870                         i40e_undo_add_filter_entries(vsi);
1871                 }
1872                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1873
1874                 if (err_cond) {
1875                         i40e_cleanup_add_list(&tmp_add_list);
1876                         retval = -ENOMEM;
1877                         goto out;
1878                 }
1879         }
1880
1881         /* Now process 'del_list' outside the lock */
1882         if (!list_empty(&tmp_del_list)) {
1883                 filter_list_len = pf->hw.aq.asq_buf_size /
1884                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1885                 del_list = kcalloc(filter_list_len,
1886                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1887                             GFP_KERNEL);
1888                 if (!del_list) {
1889                         i40e_cleanup_add_list(&tmp_add_list);
1890
1891                         /* Undo VSI's MAC filter entry element updates */
1892                         spin_lock_bh(&vsi->mac_filter_list_lock);
1893                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1894                         i40e_undo_add_filter_entries(vsi);
1895                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1896                         retval = -ENOMEM;
1897                         goto out;
1898                 }
1899
1900                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1901                         cmd_flags = 0;
1902
1903                         /* add to delete list */
1904                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1905                         del_list[num_del].vlan_tag =
1906                                 cpu_to_le16((u16)(f->vlan ==
1907                                             I40E_VLAN_ANY ? 0 : f->vlan));
1908
1909                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1910                         del_list[num_del].flags = cmd_flags;
1911                         num_del++;
1912
1913                         /* flush a full buffer */
1914                         if (num_del == filter_list_len) {
1915                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1916                                                                 vsi->seid,
1917                                                                 del_list,
1918                                                                 num_del,
1919                                                                 NULL);
1920                                 aq_err = pf->hw.aq.asq_last_status;
1921                                 num_del = 0;
1922                                 memset(del_list, 0, sizeof(*del_list));
1923
1924                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1925                                         retval = -EIO;
1926                                         dev_err(&pf->pdev->dev,
1927                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1928                                                 i40e_stat_str(&pf->hw, aq_ret),
1929                                                 i40e_aq_str(&pf->hw, aq_err));
1930                                 }
1931                         }
1932                         /* Release memory for MAC filter entries which were
1933                          * synced up with HW.
1934                          */
1935                         list_del(&f->list);
1936                         kfree(f);
1937                 }
1938
1939                 if (num_del) {
1940                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1941                                                         del_list, num_del,
1942                                                         NULL);
1943                         aq_err = pf->hw.aq.asq_last_status;
1944                         num_del = 0;
1945
1946                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1947                                 dev_info(&pf->pdev->dev,
1948                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1949                                          i40e_stat_str(&pf->hw, aq_ret),
1950                                          i40e_aq_str(&pf->hw, aq_err));
1951                 }
1952
1953                 kfree(del_list);
1954                 del_list = NULL;
1955         }
1956
1957         if (!list_empty(&tmp_add_list)) {
1958
1959                 /* do all the adds now */
1960                 filter_list_len = pf->hw.aq.asq_buf_size /
1961                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1962                 add_list = kcalloc(filter_list_len,
1963                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1964                                GFP_KERNEL);
1965                 if (!add_list) {
1966                         /* Purge element from temporary lists */
1967                         i40e_cleanup_add_list(&tmp_add_list);
1968
1969                         /* Undo add filter entries from VSI MAC filter list */
1970                         spin_lock_bh(&vsi->mac_filter_list_lock);
1971                         i40e_undo_add_filter_entries(vsi);
1972                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1973                         retval = -ENOMEM;
1974                         goto out;
1975                 }
1976
1977                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
1978
1979                         add_happened = true;
1980                         cmd_flags = 0;
1981
1982                         /* add to add array */
1983                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1984                         add_list[num_add].vlan_tag =
1985                                 cpu_to_le16(
1986                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1987                         add_list[num_add].queue_number = 0;
1988
1989                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1990                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1991                         num_add++;
1992
1993                         /* flush a full buffer */
1994                         if (num_add == filter_list_len) {
1995                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1996                                                              add_list, num_add,
1997                                                              NULL);
1998                                 aq_err = pf->hw.aq.asq_last_status;
1999                                 num_add = 0;
2000
2001                                 if (aq_ret)
2002                                         break;
2003                                 memset(add_list, 0, sizeof(*add_list));
2004                         }
2005                         /* Entries from tmp_add_list were cloned from MAC
2006                          * filter list, hence clean those cloned entries
2007                          */
2008                         list_del(&f->list);
2009                         kfree(f);
2010                 }
2011
2012                 if (num_add) {
2013                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2014                                                      add_list, num_add, NULL);
2015                         aq_err = pf->hw.aq.asq_last_status;
2016                         num_add = 0;
2017                 }
2018                 kfree(add_list);
2019                 add_list = NULL;
2020
2021                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2022                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2023                         dev_info(&pf->pdev->dev,
2024                                  "add filter failed, err %s aq_err %s\n",
2025                                  i40e_stat_str(&pf->hw, aq_ret),
2026                                  i40e_aq_str(&pf->hw, aq_err));
2027                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2028                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2029                                       &vsi->state)) {
2030                                 promisc_forced_on = true;
2031                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2032                                         &vsi->state);
2033                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2034                         }
2035                 }
2036         }
2037
2038         /* check for changes in promiscuous modes */
2039         if (changed_flags & IFF_ALLMULTI) {
2040                 bool cur_multipromisc;
2041
2042                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2043                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2044                                                                vsi->seid,
2045                                                                cur_multipromisc,
2046                                                                NULL);
2047                 if (aq_ret) {
2048                         retval = i40e_aq_rc_to_posix(aq_ret,
2049                                                      pf->hw.aq.asq_last_status);
2050                         dev_info(&pf->pdev->dev,
2051                                  "set multi promisc failed, err %s aq_err %s\n",
2052                                  i40e_stat_str(&pf->hw, aq_ret),
2053                                  i40e_aq_str(&pf->hw,
2054                                              pf->hw.aq.asq_last_status));
2055                 }
2056         }
2057         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2058                 bool cur_promisc;
2059
2060                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2061                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2062                                         &vsi->state));
2063                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2064                         /* set defport ON for Main VSI instead of true promisc
2065                          * this way we will get all unicast/multicast and VLAN
2066                          * promisc behavior but will not get VF or VMDq traffic
2067                          * replicated on the Main VSI.
2068                          */
2069                         if (pf->cur_promisc != cur_promisc) {
2070                                 pf->cur_promisc = cur_promisc;
2071                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2072                         }
2073                 } else {
2074                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2075                                                           &vsi->back->hw,
2076                                                           vsi->seid,
2077                                                           cur_promisc, NULL);
2078                         if (aq_ret) {
2079                                 retval =
2080                                 i40e_aq_rc_to_posix(aq_ret,
2081                                                     pf->hw.aq.asq_last_status);
2082                                 dev_info(&pf->pdev->dev,
2083                                          "set unicast promisc failed, err %d, aq_err %d\n",
2084                                          aq_ret, pf->hw.aq.asq_last_status);
2085                         }
2086                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2087                                                           &vsi->back->hw,
2088                                                           vsi->seid,
2089                                                           cur_promisc, NULL);
2090                         if (aq_ret) {
2091                                 retval =
2092                                 i40e_aq_rc_to_posix(aq_ret,
2093                                                     pf->hw.aq.asq_last_status);
2094                                 dev_info(&pf->pdev->dev,
2095                                          "set multicast promisc failed, err %d, aq_err %d\n",
2096                                          aq_ret, pf->hw.aq.asq_last_status);
2097                         }
2098                 }
2099                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2100                                                    vsi->seid,
2101                                                    cur_promisc, NULL);
2102                 if (aq_ret) {
2103                         retval = i40e_aq_rc_to_posix(aq_ret,
2104                                                      pf->hw.aq.asq_last_status);
2105                         dev_info(&pf->pdev->dev,
2106                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2107                                  i40e_stat_str(&pf->hw, aq_ret),
2108                                  i40e_aq_str(&pf->hw,
2109                                              pf->hw.aq.asq_last_status));
2110                 }
2111         }
2112 out:
2113         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2114         return retval;
2115 }
2116
2117 /**
2118  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2119  * @pf: board private structure
2120  **/
2121 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2122 {
2123         int v;
2124
2125         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2126                 return;
2127         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2128
2129         for (v = 0; v < pf->num_alloc_vsi; v++) {
2130                 if (pf->vsi[v] &&
2131                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2132                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2133
2134                         if (ret) {
2135                                 /* come back and try again later */
2136                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2137                                 break;
2138                         }
2139                 }
2140         }
2141 }
2142
2143 /**
2144  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2145  * @netdev: network interface device structure
2146  * @new_mtu: new value for maximum frame size
2147  *
2148  * Returns 0 on success, negative on failure
2149  **/
2150 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2151 {
2152         struct i40e_netdev_priv *np = netdev_priv(netdev);
2153         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2154         struct i40e_vsi *vsi = np->vsi;
2155
2156         /* MTU < 68 is an error and causes problems on some kernels */
2157         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2158                 return -EINVAL;
2159
2160         netdev_info(netdev, "changing MTU from %d to %d\n",
2161                     netdev->mtu, new_mtu);
2162         netdev->mtu = new_mtu;
2163         if (netif_running(netdev))
2164                 i40e_vsi_reinit_locked(vsi);
2165
2166         return 0;
2167 }
2168
2169 /**
2170  * i40e_ioctl - Access the hwtstamp interface
2171  * @netdev: network interface device structure
2172  * @ifr: interface request data
2173  * @cmd: ioctl command
2174  **/
2175 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2176 {
2177         struct i40e_netdev_priv *np = netdev_priv(netdev);
2178         struct i40e_pf *pf = np->vsi->back;
2179
2180         switch (cmd) {
2181         case SIOCGHWTSTAMP:
2182                 return i40e_ptp_get_ts_config(pf, ifr);
2183         case SIOCSHWTSTAMP:
2184                 return i40e_ptp_set_ts_config(pf, ifr);
2185         default:
2186                 return -EOPNOTSUPP;
2187         }
2188 }
2189
2190 /**
2191  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2192  * @vsi: the vsi being adjusted
2193  **/
2194 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2195 {
2196         struct i40e_vsi_context ctxt;
2197         i40e_status ret;
2198
2199         if ((vsi->info.valid_sections &
2200              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2201             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2202                 return;  /* already enabled */
2203
2204         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2205         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2206                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2207
2208         ctxt.seid = vsi->seid;
2209         ctxt.info = vsi->info;
2210         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2211         if (ret) {
2212                 dev_info(&vsi->back->pdev->dev,
2213                          "update vlan stripping failed, err %s aq_err %s\n",
2214                          i40e_stat_str(&vsi->back->hw, ret),
2215                          i40e_aq_str(&vsi->back->hw,
2216                                      vsi->back->hw.aq.asq_last_status));
2217         }
2218 }
2219
2220 /**
2221  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2222  * @vsi: the vsi being adjusted
2223  **/
2224 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2225 {
2226         struct i40e_vsi_context ctxt;
2227         i40e_status ret;
2228
2229         if ((vsi->info.valid_sections &
2230              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2231             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2232              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2233                 return;  /* already disabled */
2234
2235         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2236         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2237                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2238
2239         ctxt.seid = vsi->seid;
2240         ctxt.info = vsi->info;
2241         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2242         if (ret) {
2243                 dev_info(&vsi->back->pdev->dev,
2244                          "update vlan stripping failed, err %s aq_err %s\n",
2245                          i40e_stat_str(&vsi->back->hw, ret),
2246                          i40e_aq_str(&vsi->back->hw,
2247                                      vsi->back->hw.aq.asq_last_status));
2248         }
2249 }
2250
2251 /**
2252  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2253  * @netdev: network interface to be adjusted
2254  * @features: netdev features to test if VLAN offload is enabled or not
2255  **/
2256 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2257 {
2258         struct i40e_netdev_priv *np = netdev_priv(netdev);
2259         struct i40e_vsi *vsi = np->vsi;
2260
2261         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2262                 i40e_vlan_stripping_enable(vsi);
2263         else
2264                 i40e_vlan_stripping_disable(vsi);
2265 }
2266
2267 /**
2268  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2269  * @vsi: the vsi being configured
2270  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2271  **/
2272 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2273 {
2274         struct i40e_mac_filter *f, *add_f;
2275         bool is_netdev, is_vf;
2276
2277         is_vf = (vsi->type == I40E_VSI_SRIOV);
2278         is_netdev = !!(vsi->netdev);
2279
2280         /* Locked once because all functions invoked below iterates list*/
2281         spin_lock_bh(&vsi->mac_filter_list_lock);
2282
2283         if (is_netdev) {
2284                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2285                                         is_vf, is_netdev);
2286                 if (!add_f) {
2287                         dev_info(&vsi->back->pdev->dev,
2288                                  "Could not add vlan filter %d for %pM\n",
2289                                  vid, vsi->netdev->dev_addr);
2290                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2291                         return -ENOMEM;
2292                 }
2293         }
2294
2295         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2296                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2297                 if (!add_f) {
2298                         dev_info(&vsi->back->pdev->dev,
2299                                  "Could not add vlan filter %d for %pM\n",
2300                                  vid, f->macaddr);
2301                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2302                         return -ENOMEM;
2303                 }
2304         }
2305
2306         /* Now if we add a vlan tag, make sure to check if it is the first
2307          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2308          * with 0, so we now accept untagged and specified tagged traffic
2309          * (and not any taged and untagged)
2310          */
2311         if (vid > 0) {
2312                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2313                                                   I40E_VLAN_ANY,
2314                                                   is_vf, is_netdev)) {
2315                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2316                                         I40E_VLAN_ANY, is_vf, is_netdev);
2317                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2318                                                 is_vf, is_netdev);
2319                         if (!add_f) {
2320                                 dev_info(&vsi->back->pdev->dev,
2321                                          "Could not add filter 0 for %pM\n",
2322                                          vsi->netdev->dev_addr);
2323                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2324                                 return -ENOMEM;
2325                         }
2326                 }
2327         }
2328
2329         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2330         if (vid > 0 && !vsi->info.pvid) {
2331                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2332                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2333                                               is_vf, is_netdev))
2334                                 continue;
2335                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2336                                         is_vf, is_netdev);
2337                         add_f = i40e_add_filter(vsi, f->macaddr,
2338                                                 0, is_vf, is_netdev);
2339                         if (!add_f) {
2340                                 dev_info(&vsi->back->pdev->dev,
2341                                          "Could not add filter 0 for %pM\n",
2342                                         f->macaddr);
2343                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2344                                 return -ENOMEM;
2345                         }
2346                 }
2347         }
2348
2349         spin_unlock_bh(&vsi->mac_filter_list_lock);
2350
2351         /* schedule our worker thread which will take care of
2352          * applying the new filter changes
2353          */
2354         i40e_service_event_schedule(vsi->back);
2355         return 0;
2356 }
2357
2358 /**
2359  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2360  * @vsi: the vsi being configured
2361  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2362  *
2363  * Return: 0 on success or negative otherwise
2364  **/
2365 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2366 {
2367         struct net_device *netdev = vsi->netdev;
2368         struct i40e_mac_filter *f, *add_f;
2369         bool is_vf, is_netdev;
2370         int filter_count = 0;
2371
2372         is_vf = (vsi->type == I40E_VSI_SRIOV);
2373         is_netdev = !!(netdev);
2374
2375         /* Locked once because all functions invoked below iterates list */
2376         spin_lock_bh(&vsi->mac_filter_list_lock);
2377
2378         if (is_netdev)
2379                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2380
2381         list_for_each_entry(f, &vsi->mac_filter_list, list)
2382                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2383
2384         /* go through all the filters for this VSI and if there is only
2385          * vid == 0 it means there are no other filters, so vid 0 must
2386          * be replaced with -1. This signifies that we should from now
2387          * on accept any traffic (with any tag present, or untagged)
2388          */
2389         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2390                 if (is_netdev) {
2391                         if (f->vlan &&
2392                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2393                                 filter_count++;
2394                 }
2395
2396                 if (f->vlan)
2397                         filter_count++;
2398         }
2399
2400         if (!filter_count && is_netdev) {
2401                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2402                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2403                                     is_vf, is_netdev);
2404                 if (!f) {
2405                         dev_info(&vsi->back->pdev->dev,
2406                                  "Could not add filter %d for %pM\n",
2407                                  I40E_VLAN_ANY, netdev->dev_addr);
2408                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2409                         return -ENOMEM;
2410                 }
2411         }
2412
2413         if (!filter_count) {
2414                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2415                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2416                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2417                                                 is_vf, is_netdev);
2418                         if (!add_f) {
2419                                 dev_info(&vsi->back->pdev->dev,
2420                                          "Could not add filter %d for %pM\n",
2421                                          I40E_VLAN_ANY, f->macaddr);
2422                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2423                                 return -ENOMEM;
2424                         }
2425                 }
2426         }
2427
2428         spin_unlock_bh(&vsi->mac_filter_list_lock);
2429
2430         /* schedule our worker thread which will take care of
2431          * applying the new filter changes
2432          */
2433         i40e_service_event_schedule(vsi->back);
2434         return 0;
2435 }
2436
2437 /**
2438  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2439  * @netdev: network interface to be adjusted
2440  * @vid: vlan id to be added
2441  *
2442  * net_device_ops implementation for adding vlan ids
2443  **/
2444 #ifdef I40E_FCOE
2445 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2446                          __always_unused __be16 proto, u16 vid)
2447 #else
2448 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2449                                 __always_unused __be16 proto, u16 vid)
2450 #endif
2451 {
2452         struct i40e_netdev_priv *np = netdev_priv(netdev);
2453         struct i40e_vsi *vsi = np->vsi;
2454         int ret = 0;
2455
2456         if (vid > 4095)
2457                 return -EINVAL;
2458
2459         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2460
2461         /* If the network stack called us with vid = 0 then
2462          * it is asking to receive priority tagged packets with
2463          * vlan id 0.  Our HW receives them by default when configured
2464          * to receive untagged packets so there is no need to add an
2465          * extra filter for vlan 0 tagged packets.
2466          */
2467         if (vid)
2468                 ret = i40e_vsi_add_vlan(vsi, vid);
2469
2470         if (!ret && (vid < VLAN_N_VID))
2471                 set_bit(vid, vsi->active_vlans);
2472
2473         return ret;
2474 }
2475
2476 /**
2477  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2478  * @netdev: network interface to be adjusted
2479  * @vid: vlan id to be removed
2480  *
2481  * net_device_ops implementation for removing vlan ids
2482  **/
2483 #ifdef I40E_FCOE
2484 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2485                           __always_unused __be16 proto, u16 vid)
2486 #else
2487 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2488                                  __always_unused __be16 proto, u16 vid)
2489 #endif
2490 {
2491         struct i40e_netdev_priv *np = netdev_priv(netdev);
2492         struct i40e_vsi *vsi = np->vsi;
2493
2494         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2495
2496         /* return code is ignored as there is nothing a user
2497          * can do about failure to remove and a log message was
2498          * already printed from the other function
2499          */
2500         i40e_vsi_kill_vlan(vsi, vid);
2501
2502         clear_bit(vid, vsi->active_vlans);
2503
2504         return 0;
2505 }
2506
2507 /**
2508  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2509  * @vsi: the vsi being brought back up
2510  **/
2511 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2512 {
2513         u16 vid;
2514
2515         if (!vsi->netdev)
2516                 return;
2517
2518         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2519
2520         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2521                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2522                                      vid);
2523 }
2524
2525 /**
2526  * i40e_vsi_add_pvid - Add pvid for the VSI
2527  * @vsi: the vsi being adjusted
2528  * @vid: the vlan id to set as a PVID
2529  **/
2530 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2531 {
2532         struct i40e_vsi_context ctxt;
2533         i40e_status ret;
2534
2535         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2536         vsi->info.pvid = cpu_to_le16(vid);
2537         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2538                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2539                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2540
2541         ctxt.seid = vsi->seid;
2542         ctxt.info = vsi->info;
2543         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2544         if (ret) {
2545                 dev_info(&vsi->back->pdev->dev,
2546                          "add pvid failed, err %s aq_err %s\n",
2547                          i40e_stat_str(&vsi->back->hw, ret),
2548                          i40e_aq_str(&vsi->back->hw,
2549                                      vsi->back->hw.aq.asq_last_status));
2550                 return -ENOENT;
2551         }
2552
2553         return 0;
2554 }
2555
2556 /**
2557  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2558  * @vsi: the vsi being adjusted
2559  *
2560  * Just use the vlan_rx_register() service to put it back to normal
2561  **/
2562 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2563 {
2564         i40e_vlan_stripping_disable(vsi);
2565
2566         vsi->info.pvid = 0;
2567 }
2568
2569 /**
2570  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2571  * @vsi: ptr to the VSI
2572  *
2573  * If this function returns with an error, then it's possible one or
2574  * more of the rings is populated (while the rest are not).  It is the
2575  * callers duty to clean those orphaned rings.
2576  *
2577  * Return 0 on success, negative on failure
2578  **/
2579 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2580 {
2581         int i, err = 0;
2582
2583         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2584                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2585
2586         return err;
2587 }
2588
2589 /**
2590  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2591  * @vsi: ptr to the VSI
2592  *
2593  * Free VSI's transmit software resources
2594  **/
2595 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2596 {
2597         int i;
2598
2599         if (!vsi->tx_rings)
2600                 return;
2601
2602         for (i = 0; i < vsi->num_queue_pairs; i++)
2603                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2604                         i40e_free_tx_resources(vsi->tx_rings[i]);
2605 }
2606
2607 /**
2608  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2609  * @vsi: ptr to the VSI
2610  *
2611  * If this function returns with an error, then it's possible one or
2612  * more of the rings is populated (while the rest are not).  It is the
2613  * callers duty to clean those orphaned rings.
2614  *
2615  * Return 0 on success, negative on failure
2616  **/
2617 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2618 {
2619         int i, err = 0;
2620
2621         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2622                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2623 #ifdef I40E_FCOE
2624         i40e_fcoe_setup_ddp_resources(vsi);
2625 #endif
2626         return err;
2627 }
2628
2629 /**
2630  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2631  * @vsi: ptr to the VSI
2632  *
2633  * Free all receive software resources
2634  **/
2635 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2636 {
2637         int i;
2638
2639         if (!vsi->rx_rings)
2640                 return;
2641
2642         for (i = 0; i < vsi->num_queue_pairs; i++)
2643                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2644                         i40e_free_rx_resources(vsi->rx_rings[i]);
2645 #ifdef I40E_FCOE
2646         i40e_fcoe_free_ddp_resources(vsi);
2647 #endif
2648 }
2649
2650 /**
2651  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2652  * @ring: The Tx ring to configure
2653  *
2654  * This enables/disables XPS for a given Tx descriptor ring
2655  * based on the TCs enabled for the VSI that ring belongs to.
2656  **/
2657 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2658 {
2659         struct i40e_vsi *vsi = ring->vsi;
2660         cpumask_var_t mask;
2661
2662         if (!ring->q_vector || !ring->netdev)
2663                 return;
2664
2665         /* Single TC mode enable XPS */
2666         if (vsi->tc_config.numtc <= 1) {
2667                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2668                         netif_set_xps_queue(ring->netdev,
2669                                             &ring->q_vector->affinity_mask,
2670                                             ring->queue_index);
2671         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2672                 /* Disable XPS to allow selection based on TC */
2673                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2674                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2675                 free_cpumask_var(mask);
2676         }
2677
2678         /* schedule our worker thread which will take care of
2679          * applying the new filter changes
2680          */
2681         i40e_service_event_schedule(vsi->back);
2682 }
2683
2684 /**
2685  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2686  * @ring: The Tx ring to configure
2687  *
2688  * Configure the Tx descriptor ring in the HMC context.
2689  **/
2690 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2691 {
2692         struct i40e_vsi *vsi = ring->vsi;
2693         u16 pf_q = vsi->base_queue + ring->queue_index;
2694         struct i40e_hw *hw = &vsi->back->hw;
2695         struct i40e_hmc_obj_txq tx_ctx;
2696         i40e_status err = 0;
2697         u32 qtx_ctl = 0;
2698
2699         /* some ATR related tx ring init */
2700         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2701                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2702                 ring->atr_count = 0;
2703         } else {
2704                 ring->atr_sample_rate = 0;
2705         }
2706
2707         /* configure XPS */
2708         i40e_config_xps_tx_ring(ring);
2709
2710         /* clear the context structure first */
2711         memset(&tx_ctx, 0, sizeof(tx_ctx));
2712
2713         tx_ctx.new_context = 1;
2714         tx_ctx.base = (ring->dma / 128);
2715         tx_ctx.qlen = ring->count;
2716         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2717                                                I40E_FLAG_FD_ATR_ENABLED));
2718 #ifdef I40E_FCOE
2719         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2720 #endif
2721         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2722         /* FDIR VSI tx ring can still use RS bit and writebacks */
2723         if (vsi->type != I40E_VSI_FDIR)
2724                 tx_ctx.head_wb_ena = 1;
2725         tx_ctx.head_wb_addr = ring->dma +
2726                               (ring->count * sizeof(struct i40e_tx_desc));
2727
2728         /* As part of VSI creation/update, FW allocates certain
2729          * Tx arbitration queue sets for each TC enabled for
2730          * the VSI. The FW returns the handles to these queue
2731          * sets as part of the response buffer to Add VSI,
2732          * Update VSI, etc. AQ commands. It is expected that
2733          * these queue set handles be associated with the Tx
2734          * queues by the driver as part of the TX queue context
2735          * initialization. This has to be done regardless of
2736          * DCB as by default everything is mapped to TC0.
2737          */
2738         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2739         tx_ctx.rdylist_act = 0;
2740
2741         /* clear the context in the HMC */
2742         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2743         if (err) {
2744                 dev_info(&vsi->back->pdev->dev,
2745                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2746                          ring->queue_index, pf_q, err);
2747                 return -ENOMEM;
2748         }
2749
2750         /* set the context in the HMC */
2751         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2752         if (err) {
2753                 dev_info(&vsi->back->pdev->dev,
2754                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2755                          ring->queue_index, pf_q, err);
2756                 return -ENOMEM;
2757         }
2758
2759         /* Now associate this queue with this PCI function */
2760         if (vsi->type == I40E_VSI_VMDQ2) {
2761                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2762                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2763                            I40E_QTX_CTL_VFVM_INDX_MASK;
2764         } else {
2765                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2766         }
2767
2768         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2769                     I40E_QTX_CTL_PF_INDX_MASK);
2770         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2771         i40e_flush(hw);
2772
2773         /* cache tail off for easier writes later */
2774         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2775
2776         return 0;
2777 }
2778
2779 /**
2780  * i40e_configure_rx_ring - Configure a receive ring context
2781  * @ring: The Rx ring to configure
2782  *
2783  * Configure the Rx descriptor ring in the HMC context.
2784  **/
2785 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2786 {
2787         struct i40e_vsi *vsi = ring->vsi;
2788         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2789         u16 pf_q = vsi->base_queue + ring->queue_index;
2790         struct i40e_hw *hw = &vsi->back->hw;
2791         struct i40e_hmc_obj_rxq rx_ctx;
2792         i40e_status err = 0;
2793
2794         ring->state = 0;
2795
2796         /* clear the context structure first */
2797         memset(&rx_ctx, 0, sizeof(rx_ctx));
2798
2799         ring->rx_buf_len = vsi->rx_buf_len;
2800         ring->rx_hdr_len = vsi->rx_hdr_len;
2801
2802         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2803         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2804
2805         rx_ctx.base = (ring->dma / 128);
2806         rx_ctx.qlen = ring->count;
2807
2808         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2809                 set_ring_16byte_desc_enabled(ring);
2810                 rx_ctx.dsize = 0;
2811         } else {
2812                 rx_ctx.dsize = 1;
2813         }
2814
2815         rx_ctx.dtype = vsi->dtype;
2816         if (vsi->dtype) {
2817                 set_ring_ps_enabled(ring);
2818                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2819                                   I40E_RX_SPLIT_IP      |
2820                                   I40E_RX_SPLIT_TCP_UDP |
2821                                   I40E_RX_SPLIT_SCTP;
2822         } else {
2823                 rx_ctx.hsplit_0 = 0;
2824         }
2825
2826         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2827                                   (chain_len * ring->rx_buf_len));
2828         if (hw->revision_id == 0)
2829                 rx_ctx.lrxqthresh = 0;
2830         else
2831                 rx_ctx.lrxqthresh = 2;
2832         rx_ctx.crcstrip = 1;
2833         rx_ctx.l2tsel = 1;
2834         /* this controls whether VLAN is stripped from inner headers */
2835         rx_ctx.showiv = 0;
2836 #ifdef I40E_FCOE
2837         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2838 #endif
2839         /* set the prefena field to 1 because the manual says to */
2840         rx_ctx.prefena = 1;
2841
2842         /* clear the context in the HMC */
2843         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2844         if (err) {
2845                 dev_info(&vsi->back->pdev->dev,
2846                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2847                          ring->queue_index, pf_q, err);
2848                 return -ENOMEM;
2849         }
2850
2851         /* set the context in the HMC */
2852         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2853         if (err) {
2854                 dev_info(&vsi->back->pdev->dev,
2855                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2856                          ring->queue_index, pf_q, err);
2857                 return -ENOMEM;
2858         }
2859
2860         /* cache tail for quicker writes, and clear the reg before use */
2861         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2862         writel(0, ring->tail);
2863
2864         if (ring_is_ps_enabled(ring)) {
2865                 i40e_alloc_rx_headers(ring);
2866                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2867         } else {
2868                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2869         }
2870
2871         return 0;
2872 }
2873
2874 /**
2875  * i40e_vsi_configure_tx - Configure the VSI for Tx
2876  * @vsi: VSI structure describing this set of rings and resources
2877  *
2878  * Configure the Tx VSI for operation.
2879  **/
2880 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2881 {
2882         int err = 0;
2883         u16 i;
2884
2885         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2886                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2887
2888         return err;
2889 }
2890
2891 /**
2892  * i40e_vsi_configure_rx - Configure the VSI for Rx
2893  * @vsi: the VSI being configured
2894  *
2895  * Configure the Rx VSI for operation.
2896  **/
2897 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2898 {
2899         int err = 0;
2900         u16 i;
2901
2902         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2903                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2904                                + ETH_FCS_LEN + VLAN_HLEN;
2905         else
2906                 vsi->max_frame = I40E_RXBUFFER_2048;
2907
2908         /* figure out correct receive buffer length */
2909         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2910                                     I40E_FLAG_RX_PS_ENABLED)) {
2911         case I40E_FLAG_RX_1BUF_ENABLED:
2912                 vsi->rx_hdr_len = 0;
2913                 vsi->rx_buf_len = vsi->max_frame;
2914                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2915                 break;
2916         case I40E_FLAG_RX_PS_ENABLED:
2917                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2918                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2919                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2920                 break;
2921         default:
2922                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2923                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2924                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2925                 break;
2926         }
2927
2928 #ifdef I40E_FCOE
2929         /* setup rx buffer for FCoE */
2930         if ((vsi->type == I40E_VSI_FCOE) &&
2931             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2932                 vsi->rx_hdr_len = 0;
2933                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2934                 vsi->max_frame = I40E_RXBUFFER_3072;
2935                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2936         }
2937
2938 #endif /* I40E_FCOE */
2939         /* round up for the chip's needs */
2940         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2941                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2942         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2943                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2944
2945         /* set up individual rings */
2946         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2947                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2948
2949         return err;
2950 }
2951
2952 /**
2953  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2954  * @vsi: ptr to the VSI
2955  **/
2956 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2957 {
2958         struct i40e_ring *tx_ring, *rx_ring;
2959         u16 qoffset, qcount;
2960         int i, n;
2961
2962         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2963                 /* Reset the TC information */
2964                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2965                         rx_ring = vsi->rx_rings[i];
2966                         tx_ring = vsi->tx_rings[i];
2967                         rx_ring->dcb_tc = 0;
2968                         tx_ring->dcb_tc = 0;
2969                 }
2970         }
2971
2972         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2973                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2974                         continue;
2975
2976                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2977                 qcount = vsi->tc_config.tc_info[n].qcount;
2978                 for (i = qoffset; i < (qoffset + qcount); i++) {
2979                         rx_ring = vsi->rx_rings[i];
2980                         tx_ring = vsi->tx_rings[i];
2981                         rx_ring->dcb_tc = n;
2982                         tx_ring->dcb_tc = n;
2983                 }
2984         }
2985 }
2986
2987 /**
2988  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2989  * @vsi: ptr to the VSI
2990  **/
2991 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2992 {
2993         if (vsi->netdev)
2994                 i40e_set_rx_mode(vsi->netdev);
2995 }
2996
2997 /**
2998  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2999  * @vsi: Pointer to the targeted VSI
3000  *
3001  * This function replays the hlist on the hw where all the SB Flow Director
3002  * filters were saved.
3003  **/
3004 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3005 {
3006         struct i40e_fdir_filter *filter;
3007         struct i40e_pf *pf = vsi->back;
3008         struct hlist_node *node;
3009
3010         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3011                 return;
3012
3013         hlist_for_each_entry_safe(filter, node,
3014                                   &pf->fdir_filter_list, fdir_node) {
3015                 i40e_add_del_fdir(vsi, filter, true);
3016         }
3017 }
3018
3019 /**
3020  * i40e_vsi_configure - Set up the VSI for action
3021  * @vsi: the VSI being configured
3022  **/
3023 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3024 {
3025         int err;
3026
3027         i40e_set_vsi_rx_mode(vsi);
3028         i40e_restore_vlan(vsi);
3029         i40e_vsi_config_dcb_rings(vsi);
3030         err = i40e_vsi_configure_tx(vsi);
3031         if (!err)
3032                 err = i40e_vsi_configure_rx(vsi);
3033
3034         return err;
3035 }
3036
3037 /**
3038  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3039  * @vsi: the VSI being configured
3040  **/
3041 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3042 {
3043         struct i40e_pf *pf = vsi->back;
3044         struct i40e_hw *hw = &pf->hw;
3045         u16 vector;
3046         int i, q;
3047         u32 qp;
3048
3049         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3050          * and PFINT_LNKLSTn registers, e.g.:
3051          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3052          */
3053         qp = vsi->base_queue;
3054         vector = vsi->base_vector;
3055         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3056                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3057
3058                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3059                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3060                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3061                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3062                      q_vector->rx.itr);
3063                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3064                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3065                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3066                      q_vector->tx.itr);
3067                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3068                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3069
3070                 /* Linked list for the queuepairs assigned to this vector */
3071                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3072                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3073                         u32 val;
3074
3075                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3076                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3077                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3078                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3079                               (I40E_QUEUE_TYPE_TX
3080                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3081
3082                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3083
3084                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3085                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3086                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3087                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3088                               (I40E_QUEUE_TYPE_RX
3089                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3090
3091                         /* Terminate the linked list */
3092                         if (q == (q_vector->num_ringpairs - 1))
3093                                 val |= (I40E_QUEUE_END_OF_LIST
3094                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3095
3096                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3097                         qp++;
3098                 }
3099         }
3100
3101         i40e_flush(hw);
3102 }
3103
3104 /**
3105  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3106  * @hw: ptr to the hardware info
3107  **/
3108 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3109 {
3110         struct i40e_hw *hw = &pf->hw;
3111         u32 val;
3112
3113         /* clear things first */
3114         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3115         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3116
3117         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3118               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3119               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3120               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3121               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3122               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3123               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3124               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3125
3126         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3127                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3128
3129         if (pf->flags & I40E_FLAG_PTP)
3130                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3131
3132         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3133
3134         /* SW_ITR_IDX = 0, but don't change INTENA */
3135         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3136                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3137
3138         /* OTHER_ITR_IDX = 0 */
3139         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3140 }
3141
3142 /**
3143  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3144  * @vsi: the VSI being configured
3145  **/
3146 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3147 {
3148         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3149         struct i40e_pf *pf = vsi->back;
3150         struct i40e_hw *hw = &pf->hw;
3151         u32 val;
3152
3153         /* set the ITR configuration */
3154         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3155         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3156         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3157         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3158         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3159         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3160         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3161
3162         i40e_enable_misc_int_causes(pf);
3163
3164         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3165         wr32(hw, I40E_PFINT_LNKLST0, 0);
3166
3167         /* Associate the queue pair to the vector and enable the queue int */
3168         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3169               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3170               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3171
3172         wr32(hw, I40E_QINT_RQCTL(0), val);
3173
3174         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3175               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3176               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3177
3178         wr32(hw, I40E_QINT_TQCTL(0), val);
3179         i40e_flush(hw);
3180 }
3181
3182 /**
3183  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3184  * @pf: board private structure
3185  **/
3186 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3187 {
3188         struct i40e_hw *hw = &pf->hw;
3189
3190         wr32(hw, I40E_PFINT_DYN_CTL0,
3191              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3192         i40e_flush(hw);
3193 }
3194
3195 /**
3196  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3197  * @pf: board private structure
3198  **/
3199 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3200 {
3201         struct i40e_hw *hw = &pf->hw;
3202         u32 val;
3203
3204         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3205               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3206               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3207
3208         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3209         i40e_flush(hw);
3210 }
3211
3212 /**
3213  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3214  * @vsi: pointer to a vsi
3215  * @vector: disable a particular Hw Interrupt vector
3216  **/
3217 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3218 {
3219         struct i40e_pf *pf = vsi->back;
3220         struct i40e_hw *hw = &pf->hw;
3221         u32 val;
3222
3223         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3224         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3225         i40e_flush(hw);
3226 }
3227
3228 /**
3229  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3230  * @irq: interrupt number
3231  * @data: pointer to a q_vector
3232  **/
3233 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3234 {
3235         struct i40e_q_vector *q_vector = data;
3236
3237         if (!q_vector->tx.ring && !q_vector->rx.ring)
3238                 return IRQ_HANDLED;
3239
3240         napi_schedule_irqoff(&q_vector->napi);
3241
3242         return IRQ_HANDLED;
3243 }
3244
3245 /**
3246  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3247  * @vsi: the VSI being configured
3248  * @basename: name for the vector
3249  *
3250  * Allocates MSI-X vectors and requests interrupts from the kernel.
3251  **/
3252 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3253 {
3254         int q_vectors = vsi->num_q_vectors;
3255         struct i40e_pf *pf = vsi->back;
3256         int base = vsi->base_vector;
3257         int rx_int_idx = 0;
3258         int tx_int_idx = 0;
3259         int vector, err;
3260
3261         for (vector = 0; vector < q_vectors; vector++) {
3262                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3263
3264                 if (q_vector->tx.ring && q_vector->rx.ring) {
3265                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3266                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3267                         tx_int_idx++;
3268                 } else if (q_vector->rx.ring) {
3269                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3270                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3271                 } else if (q_vector->tx.ring) {
3272                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3273                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3274                 } else {
3275                         /* skip this unused q_vector */
3276                         continue;
3277                 }
3278                 err = request_irq(pf->msix_entries[base + vector].vector,
3279                                   vsi->irq_handler,
3280                                   0,
3281                                   q_vector->name,
3282                                   q_vector);
3283                 if (err) {
3284                         dev_info(&pf->pdev->dev,
3285                                  "MSIX request_irq failed, error: %d\n", err);
3286                         goto free_queue_irqs;
3287                 }
3288                 /* assign the mask for this irq */
3289                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3290                                       &q_vector->affinity_mask);
3291         }
3292
3293         vsi->irqs_ready = true;
3294         return 0;
3295
3296 free_queue_irqs:
3297         while (vector) {
3298                 vector--;
3299                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3300                                       NULL);
3301                 free_irq(pf->msix_entries[base + vector].vector,
3302                          &(vsi->q_vectors[vector]));
3303         }
3304         return err;
3305 }
3306
3307 /**
3308  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3309  * @vsi: the VSI being un-configured
3310  **/
3311 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3312 {
3313         struct i40e_pf *pf = vsi->back;
3314         struct i40e_hw *hw = &pf->hw;
3315         int base = vsi->base_vector;
3316         int i;
3317
3318         for (i = 0; i < vsi->num_queue_pairs; i++) {
3319                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3320                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3321         }
3322
3323         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3324                 for (i = vsi->base_vector;
3325                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3326                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3327
3328                 i40e_flush(hw);
3329                 for (i = 0; i < vsi->num_q_vectors; i++)
3330                         synchronize_irq(pf->msix_entries[i + base].vector);
3331         } else {
3332                 /* Legacy and MSI mode - this stops all interrupt handling */
3333                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3334                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3335                 i40e_flush(hw);
3336                 synchronize_irq(pf->pdev->irq);
3337         }
3338 }
3339
3340 /**
3341  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3342  * @vsi: the VSI being configured
3343  **/
3344 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3345 {
3346         struct i40e_pf *pf = vsi->back;
3347         int i;
3348
3349         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3350                 for (i = 0; i < vsi->num_q_vectors; i++)
3351                         i40e_irq_dynamic_enable(vsi, i);
3352         } else {
3353                 i40e_irq_dynamic_enable_icr0(pf);
3354         }
3355
3356         i40e_flush(&pf->hw);
3357         return 0;
3358 }
3359
3360 /**
3361  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3362  * @pf: board private structure
3363  **/
3364 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3365 {
3366         /* Disable ICR 0 */
3367         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3368         i40e_flush(&pf->hw);
3369 }
3370
3371 /**
3372  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3373  * @irq: interrupt number
3374  * @data: pointer to a q_vector
3375  *
3376  * This is the handler used for all MSI/Legacy interrupts, and deals
3377  * with both queue and non-queue interrupts.  This is also used in
3378  * MSIX mode to handle the non-queue interrupts.
3379  **/
3380 static irqreturn_t i40e_intr(int irq, void *data)
3381 {
3382         struct i40e_pf *pf = (struct i40e_pf *)data;
3383         struct i40e_hw *hw = &pf->hw;
3384         irqreturn_t ret = IRQ_NONE;
3385         u32 icr0, icr0_remaining;
3386         u32 val, ena_mask;
3387
3388         icr0 = rd32(hw, I40E_PFINT_ICR0);
3389         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3390
3391         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3392         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3393                 goto enable_intr;
3394
3395         /* if interrupt but no bits showing, must be SWINT */
3396         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3397             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3398                 pf->sw_int_count++;
3399
3400         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3401             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3402                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3403                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3404                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3405         }
3406
3407         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3408         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3409                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3410                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3411
3412                 /* temporarily disable queue cause for NAPI processing */
3413                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3414
3415                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3416                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3417
3418                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3419                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3420                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3421
3422                 if (!test_bit(__I40E_DOWN, &pf->state))
3423                         napi_schedule_irqoff(&q_vector->napi);
3424         }
3425
3426         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3427                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3428                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3429         }
3430
3431         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3432                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3433                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3434         }
3435
3436         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3437                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3438                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3439         }
3440
3441         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3442                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3443                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3444                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3445                 val = rd32(hw, I40E_GLGEN_RSTAT);
3446                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3447                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3448                 if (val == I40E_RESET_CORER) {
3449                         pf->corer_count++;
3450                 } else if (val == I40E_RESET_GLOBR) {
3451                         pf->globr_count++;
3452                 } else if (val == I40E_RESET_EMPR) {
3453                         pf->empr_count++;
3454                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3455                 }
3456         }
3457
3458         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3459                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3460                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3461                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3462                          rd32(hw, I40E_PFHMC_ERRORINFO),
3463                          rd32(hw, I40E_PFHMC_ERRORDATA));
3464         }
3465
3466         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3467                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3468
3469                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3470                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3471                         i40e_ptp_tx_hwtstamp(pf);
3472                 }
3473         }
3474
3475         /* If a critical error is pending we have no choice but to reset the
3476          * device.
3477          * Report and mask out any remaining unexpected interrupts.
3478          */
3479         icr0_remaining = icr0 & ena_mask;
3480         if (icr0_remaining) {
3481                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3482                          icr0_remaining);
3483                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3484                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3485                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3486                         dev_info(&pf->pdev->dev, "device will be reset\n");
3487                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3488                         i40e_service_event_schedule(pf);
3489                 }
3490                 ena_mask &= ~icr0_remaining;
3491         }
3492         ret = IRQ_HANDLED;
3493
3494 enable_intr:
3495         /* re-enable interrupt causes */
3496         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3497         if (!test_bit(__I40E_DOWN, &pf->state)) {
3498                 i40e_service_event_schedule(pf);
3499                 i40e_irq_dynamic_enable_icr0(pf);
3500         }
3501
3502         return ret;
3503 }
3504
3505 /**
3506  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3507  * @tx_ring:  tx ring to clean
3508  * @budget:   how many cleans we're allowed
3509  *
3510  * Returns true if there's any budget left (e.g. the clean is finished)
3511  **/
3512 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3513 {
3514         struct i40e_vsi *vsi = tx_ring->vsi;
3515         u16 i = tx_ring->next_to_clean;
3516         struct i40e_tx_buffer *tx_buf;
3517         struct i40e_tx_desc *tx_desc;
3518
3519         tx_buf = &tx_ring->tx_bi[i];
3520         tx_desc = I40E_TX_DESC(tx_ring, i);
3521         i -= tx_ring->count;
3522
3523         do {
3524                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3525
3526                 /* if next_to_watch is not set then there is no work pending */
3527                 if (!eop_desc)
3528                         break;
3529
3530                 /* prevent any other reads prior to eop_desc */
3531                 read_barrier_depends();
3532
3533                 /* if the descriptor isn't done, no work yet to do */
3534                 if (!(eop_desc->cmd_type_offset_bsz &
3535                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3536                         break;
3537
3538                 /* clear next_to_watch to prevent false hangs */
3539                 tx_buf->next_to_watch = NULL;
3540
3541                 tx_desc->buffer_addr = 0;
3542                 tx_desc->cmd_type_offset_bsz = 0;
3543                 /* move past filter desc */
3544                 tx_buf++;
3545                 tx_desc++;
3546                 i++;
3547                 if (unlikely(!i)) {
3548                         i -= tx_ring->count;
3549                         tx_buf = tx_ring->tx_bi;
3550                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3551                 }
3552                 /* unmap skb header data */
3553                 dma_unmap_single(tx_ring->dev,
3554                                  dma_unmap_addr(tx_buf, dma),
3555                                  dma_unmap_len(tx_buf, len),
3556                                  DMA_TO_DEVICE);
3557                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3558                         kfree(tx_buf->raw_buf);
3559
3560                 tx_buf->raw_buf = NULL;
3561                 tx_buf->tx_flags = 0;
3562                 tx_buf->next_to_watch = NULL;
3563                 dma_unmap_len_set(tx_buf, len, 0);
3564                 tx_desc->buffer_addr = 0;
3565                 tx_desc->cmd_type_offset_bsz = 0;
3566
3567                 /* move us past the eop_desc for start of next FD 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
3577                 /* update budget accounting */
3578                 budget--;
3579         } while (likely(budget));
3580
3581         i += tx_ring->count;
3582         tx_ring->next_to_clean = i;
3583
3584         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3585                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3586
3587         return budget > 0;
3588 }
3589
3590 /**
3591  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3592  * @irq: interrupt number
3593  * @data: pointer to a q_vector
3594  **/
3595 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3596 {
3597         struct i40e_q_vector *q_vector = data;
3598         struct i40e_vsi *vsi;
3599
3600         if (!q_vector->tx.ring)
3601                 return IRQ_HANDLED;
3602
3603         vsi = q_vector->tx.ring->vsi;
3604         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3605
3606         return IRQ_HANDLED;
3607 }
3608
3609 /**
3610  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3611  * @vsi: the VSI being configured
3612  * @v_idx: vector index
3613  * @qp_idx: queue pair index
3614  **/
3615 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3616 {
3617         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3618         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3619         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3620
3621         tx_ring->q_vector = q_vector;
3622         tx_ring->next = q_vector->tx.ring;
3623         q_vector->tx.ring = tx_ring;
3624         q_vector->tx.count++;
3625
3626         rx_ring->q_vector = q_vector;
3627         rx_ring->next = q_vector->rx.ring;
3628         q_vector->rx.ring = rx_ring;
3629         q_vector->rx.count++;
3630 }
3631
3632 /**
3633  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3634  * @vsi: the VSI being configured
3635  *
3636  * This function maps descriptor rings to the queue-specific vectors
3637  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3638  * one vector per queue pair, but on a constrained vector budget, we
3639  * group the queue pairs as "efficiently" as possible.
3640  **/
3641 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3642 {
3643         int qp_remaining = vsi->num_queue_pairs;
3644         int q_vectors = vsi->num_q_vectors;
3645         int num_ringpairs;
3646         int v_start = 0;
3647         int qp_idx = 0;
3648
3649         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3650          * group them so there are multiple queues per vector.
3651          * It is also important to go through all the vectors available to be
3652          * sure that if we don't use all the vectors, that the remaining vectors
3653          * are cleared. This is especially important when decreasing the
3654          * number of queues in use.
3655          */
3656         for (; v_start < q_vectors; v_start++) {
3657                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3658
3659                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3660
3661                 q_vector->num_ringpairs = num_ringpairs;
3662
3663                 q_vector->rx.count = 0;
3664                 q_vector->tx.count = 0;
3665                 q_vector->rx.ring = NULL;
3666                 q_vector->tx.ring = NULL;
3667
3668                 while (num_ringpairs--) {
3669                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3670                         qp_idx++;
3671                         qp_remaining--;
3672                 }
3673         }
3674 }
3675
3676 /**
3677  * i40e_vsi_request_irq - Request IRQ from the OS
3678  * @vsi: the VSI being configured
3679  * @basename: name for the vector
3680  **/
3681 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3682 {
3683         struct i40e_pf *pf = vsi->back;
3684         int err;
3685
3686         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3687                 err = i40e_vsi_request_irq_msix(vsi, basename);
3688         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3689                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3690                                   pf->int_name, pf);
3691         else
3692                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3693                                   pf->int_name, pf);
3694
3695         if (err)
3696                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3697
3698         return err;
3699 }
3700
3701 #ifdef CONFIG_NET_POLL_CONTROLLER
3702 /**
3703  * i40e_netpoll - A Polling 'interrupt'handler
3704  * @netdev: network interface device structure
3705  *
3706  * This is used by netconsole to send skbs without having to re-enable
3707  * interrupts.  It's not called while the normal interrupt routine is executing.
3708  **/
3709 #ifdef I40E_FCOE
3710 void i40e_netpoll(struct net_device *netdev)
3711 #else
3712 static void i40e_netpoll(struct net_device *netdev)
3713 #endif
3714 {
3715         struct i40e_netdev_priv *np = netdev_priv(netdev);
3716         struct i40e_vsi *vsi = np->vsi;
3717         struct i40e_pf *pf = vsi->back;
3718         int i;
3719
3720         /* if interface is down do nothing */
3721         if (test_bit(__I40E_DOWN, &vsi->state))
3722                 return;
3723
3724         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3725                 for (i = 0; i < vsi->num_q_vectors; i++)
3726                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3727         } else {
3728                 i40e_intr(pf->pdev->irq, netdev);
3729         }
3730 }
3731 #endif
3732
3733 /**
3734  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3735  * @pf: the PF being configured
3736  * @pf_q: the PF queue
3737  * @enable: enable or disable state of the queue
3738  *
3739  * This routine will wait for the given Tx queue of the PF to reach the
3740  * enabled or disabled state.
3741  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3742  * multiple retries; else will return 0 in case of success.
3743  **/
3744 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3745 {
3746         int i;
3747         u32 tx_reg;
3748
3749         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3750                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3751                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3752                         break;
3753
3754                 usleep_range(10, 20);
3755         }
3756         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3757                 return -ETIMEDOUT;
3758
3759         return 0;
3760 }
3761
3762 /**
3763  * i40e_vsi_control_tx - Start or stop a VSI's rings
3764  * @vsi: the VSI being configured
3765  * @enable: start or stop the rings
3766  **/
3767 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3768 {
3769         struct i40e_pf *pf = vsi->back;
3770         struct i40e_hw *hw = &pf->hw;
3771         int i, j, pf_q, ret = 0;
3772         u32 tx_reg;
3773
3774         pf_q = vsi->base_queue;
3775         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3776
3777                 /* warn the TX unit of coming changes */
3778                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3779                 if (!enable)
3780                         usleep_range(10, 20);
3781
3782                 for (j = 0; j < 50; j++) {
3783                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3784                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3785                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3786                                 break;
3787                         usleep_range(1000, 2000);
3788                 }
3789                 /* Skip if the queue is already in the requested state */
3790                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3791                         continue;
3792
3793                 /* turn on/off the queue */
3794                 if (enable) {
3795                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3796                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3797                 } else {
3798                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3799                 }
3800
3801                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3802                 /* No waiting for the Tx queue to disable */
3803                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3804                         continue;
3805
3806                 /* wait for the change to finish */
3807                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3808                 if (ret) {
3809                         dev_info(&pf->pdev->dev,
3810                                  "VSI seid %d Tx ring %d %sable timeout\n",
3811                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3812                         break;
3813                 }
3814         }
3815
3816         if (hw->revision_id == 0)
3817                 mdelay(50);
3818         return ret;
3819 }
3820
3821 /**
3822  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3823  * @pf: the PF being configured
3824  * @pf_q: the PF queue
3825  * @enable: enable or disable state of the queue
3826  *
3827  * This routine will wait for the given Rx queue of the PF to reach the
3828  * enabled or disabled state.
3829  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3830  * multiple retries; else will return 0 in case of success.
3831  **/
3832 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3833 {
3834         int i;
3835         u32 rx_reg;
3836
3837         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3838                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3839                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3840                         break;
3841
3842                 usleep_range(10, 20);
3843         }
3844         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3845                 return -ETIMEDOUT;
3846
3847         return 0;
3848 }
3849
3850 /**
3851  * i40e_vsi_control_rx - Start or stop a VSI's rings
3852  * @vsi: the VSI being configured
3853  * @enable: start or stop the rings
3854  **/
3855 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3856 {
3857         struct i40e_pf *pf = vsi->back;
3858         struct i40e_hw *hw = &pf->hw;
3859         int i, j, pf_q, ret = 0;
3860         u32 rx_reg;
3861
3862         pf_q = vsi->base_queue;
3863         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3864                 for (j = 0; j < 50; j++) {
3865                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3866                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3867                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3868                                 break;
3869                         usleep_range(1000, 2000);
3870                 }
3871
3872                 /* Skip if the queue is already in the requested state */
3873                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3874                         continue;
3875
3876                 /* turn on/off the queue */
3877                 if (enable)
3878                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3879                 else
3880                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3881                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3882
3883                 /* wait for the change to finish */
3884                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3885                 if (ret) {
3886                         dev_info(&pf->pdev->dev,
3887                                  "VSI seid %d Rx ring %d %sable timeout\n",
3888                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3889                         break;
3890                 }
3891         }
3892
3893         return ret;
3894 }
3895
3896 /**
3897  * i40e_vsi_control_rings - Start or stop a VSI's rings
3898  * @vsi: the VSI being configured
3899  * @enable: start or stop the rings
3900  **/
3901 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3902 {
3903         int ret = 0;
3904
3905         /* do rx first for enable and last for disable */
3906         if (request) {
3907                 ret = i40e_vsi_control_rx(vsi, request);
3908                 if (ret)
3909                         return ret;
3910                 ret = i40e_vsi_control_tx(vsi, request);
3911         } else {
3912                 /* Ignore return value, we need to shutdown whatever we can */
3913                 i40e_vsi_control_tx(vsi, request);
3914                 i40e_vsi_control_rx(vsi, request);
3915         }
3916
3917         return ret;
3918 }
3919
3920 /**
3921  * i40e_vsi_free_irq - Free the irq association with the OS
3922  * @vsi: the VSI being configured
3923  **/
3924 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3925 {
3926         struct i40e_pf *pf = vsi->back;
3927         struct i40e_hw *hw = &pf->hw;
3928         int base = vsi->base_vector;
3929         u32 val, qp;
3930         int i;
3931
3932         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3933                 if (!vsi->q_vectors)
3934                         return;
3935
3936                 if (!vsi->irqs_ready)
3937                         return;
3938
3939                 vsi->irqs_ready = false;
3940                 for (i = 0; i < vsi->num_q_vectors; i++) {
3941                         u16 vector = i + base;
3942
3943                         /* free only the irqs that were actually requested */
3944                         if (!vsi->q_vectors[i] ||
3945                             !vsi->q_vectors[i]->num_ringpairs)
3946                                 continue;
3947
3948                         /* clear the affinity_mask in the IRQ descriptor */
3949                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3950                                               NULL);
3951                         free_irq(pf->msix_entries[vector].vector,
3952                                  vsi->q_vectors[i]);
3953
3954                         /* Tear down the interrupt queue link list
3955                          *
3956                          * We know that they come in pairs and always
3957                          * the Rx first, then the Tx.  To clear the
3958                          * link list, stick the EOL value into the
3959                          * next_q field of the registers.
3960                          */
3961                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3962                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3963                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3964                         val |= I40E_QUEUE_END_OF_LIST
3965                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3966                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3967
3968                         while (qp != I40E_QUEUE_END_OF_LIST) {
3969                                 u32 next;
3970
3971                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3972
3973                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3974                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3975                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3976                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3977
3978                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3979                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3980
3981                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3982
3983                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3984
3985                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3986                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3987
3988                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3989                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3990                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3991                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3992
3993                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3994                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3995
3996                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3997                                 qp = next;
3998                         }
3999                 }
4000         } else {
4001                 free_irq(pf->pdev->irq, pf);
4002
4003                 val = rd32(hw, I40E_PFINT_LNKLST0);
4004                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4005                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4006                 val |= I40E_QUEUE_END_OF_LIST
4007                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4008                 wr32(hw, I40E_PFINT_LNKLST0, val);
4009
4010                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4011                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4012                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4013                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4014                          I40E_QINT_RQCTL_INTEVENT_MASK);
4015
4016                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4017                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4018
4019                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4020
4021                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4022
4023                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4024                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4025                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4026                          I40E_QINT_TQCTL_INTEVENT_MASK);
4027
4028                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4029                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4030
4031                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4032         }
4033 }
4034
4035 /**
4036  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4037  * @vsi: the VSI being configured
4038  * @v_idx: Index of vector to be freed
4039  *
4040  * This function frees the memory allocated to the q_vector.  In addition if
4041  * NAPI is enabled it will delete any references to the NAPI struct prior
4042  * to freeing the q_vector.
4043  **/
4044 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4045 {
4046         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4047         struct i40e_ring *ring;
4048
4049         if (!q_vector)
4050                 return;
4051
4052         /* disassociate q_vector from rings */
4053         i40e_for_each_ring(ring, q_vector->tx)
4054                 ring->q_vector = NULL;
4055
4056         i40e_for_each_ring(ring, q_vector->rx)
4057                 ring->q_vector = NULL;
4058
4059         /* only VSI w/ an associated netdev is set up w/ NAPI */
4060         if (vsi->netdev)
4061                 netif_napi_del(&q_vector->napi);
4062
4063         vsi->q_vectors[v_idx] = NULL;
4064
4065         kfree_rcu(q_vector, rcu);
4066 }
4067
4068 /**
4069  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4070  * @vsi: the VSI being un-configured
4071  *
4072  * This frees the memory allocated to the q_vectors and
4073  * deletes references to the NAPI struct.
4074  **/
4075 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4076 {
4077         int v_idx;
4078
4079         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4080                 i40e_free_q_vector(vsi, v_idx);
4081 }
4082
4083 /**
4084  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4085  * @pf: board private structure
4086  **/
4087 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4088 {
4089         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4090         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4091                 pci_disable_msix(pf->pdev);
4092                 kfree(pf->msix_entries);
4093                 pf->msix_entries = NULL;
4094                 kfree(pf->irq_pile);
4095                 pf->irq_pile = NULL;
4096         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4097                 pci_disable_msi(pf->pdev);
4098         }
4099         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4100 }
4101
4102 /**
4103  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4104  * @pf: board private structure
4105  *
4106  * We go through and clear interrupt specific resources and reset the structure
4107  * to pre-load conditions
4108  **/
4109 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4110 {
4111         int i;
4112
4113         i40e_stop_misc_vector(pf);
4114         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4115                 synchronize_irq(pf->msix_entries[0].vector);
4116                 free_irq(pf->msix_entries[0].vector, pf);
4117         }
4118
4119         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4120         for (i = 0; i < pf->num_alloc_vsi; i++)
4121                 if (pf->vsi[i])
4122                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4123         i40e_reset_interrupt_capability(pf);
4124 }
4125
4126 /**
4127  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4128  * @vsi: the VSI being configured
4129  **/
4130 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4131 {
4132         int q_idx;
4133
4134         if (!vsi->netdev)
4135                 return;
4136
4137         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4138                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4139 }
4140
4141 /**
4142  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4143  * @vsi: the VSI being configured
4144  **/
4145 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4146 {
4147         int q_idx;
4148
4149         if (!vsi->netdev)
4150                 return;
4151
4152         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4153                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4154 }
4155
4156 /**
4157  * i40e_vsi_close - Shut down a VSI
4158  * @vsi: the vsi to be quelled
4159  **/
4160 static void i40e_vsi_close(struct i40e_vsi *vsi)
4161 {
4162         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4163                 i40e_down(vsi);
4164         i40e_vsi_free_irq(vsi);
4165         i40e_vsi_free_tx_resources(vsi);
4166         i40e_vsi_free_rx_resources(vsi);
4167         vsi->current_netdev_flags = 0;
4168 }
4169
4170 /**
4171  * i40e_quiesce_vsi - Pause a given VSI
4172  * @vsi: the VSI being paused
4173  **/
4174 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4175 {
4176         if (test_bit(__I40E_DOWN, &vsi->state))
4177                 return;
4178
4179         /* No need to disable FCoE VSI when Tx suspended */
4180         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4181             vsi->type == I40E_VSI_FCOE) {
4182                 dev_dbg(&vsi->back->pdev->dev,
4183                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4184                 return;
4185         }
4186
4187         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4188         if (vsi->netdev && netif_running(vsi->netdev))
4189                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4190         else
4191                 i40e_vsi_close(vsi);
4192 }
4193
4194 /**
4195  * i40e_unquiesce_vsi - Resume a given VSI
4196  * @vsi: the VSI being resumed
4197  **/
4198 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4199 {
4200         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4201                 return;
4202
4203         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4204         if (vsi->netdev && netif_running(vsi->netdev))
4205                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4206         else
4207                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4208 }
4209
4210 /**
4211  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4212  * @pf: the PF
4213  **/
4214 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4215 {
4216         int v;
4217
4218         for (v = 0; v < pf->num_alloc_vsi; v++) {
4219                 if (pf->vsi[v])
4220                         i40e_quiesce_vsi(pf->vsi[v]);
4221         }
4222 }
4223
4224 /**
4225  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4226  * @pf: the PF
4227  **/
4228 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4229 {
4230         int v;
4231
4232         for (v = 0; v < pf->num_alloc_vsi; v++) {
4233                 if (pf->vsi[v])
4234                         i40e_unquiesce_vsi(pf->vsi[v]);
4235         }
4236 }
4237
4238 #ifdef CONFIG_I40E_DCB
4239 /**
4240  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4241  * @vsi: the VSI being configured
4242  *
4243  * This function waits for the given VSI's Tx queues to be disabled.
4244  **/
4245 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4246 {
4247         struct i40e_pf *pf = vsi->back;
4248         int i, pf_q, ret;
4249
4250         pf_q = vsi->base_queue;
4251         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4252                 /* Check and wait for the disable status of the queue */
4253                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4254                 if (ret) {
4255                         dev_info(&pf->pdev->dev,
4256                                  "VSI seid %d Tx ring %d disable timeout\n",
4257                                  vsi->seid, pf_q);
4258                         return ret;
4259                 }
4260         }
4261
4262         return 0;
4263 }
4264
4265 /**
4266  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4267  * @pf: the PF
4268  *
4269  * This function waits for the Tx queues to be in disabled state for all the
4270  * VSIs that are managed by this PF.
4271  **/
4272 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4273 {
4274         int v, ret = 0;
4275
4276         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4277                 /* No need to wait for FCoE VSI queues */
4278                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4279                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4280                         if (ret)
4281                                 break;
4282                 }
4283         }
4284
4285         return ret;
4286 }
4287
4288 #endif
4289
4290 /**
4291  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4292  * @q_idx: TX queue number
4293  * @vsi: Pointer to VSI struct
4294  *
4295  * This function checks specified queue for given VSI. Detects hung condition.
4296  * Sets hung bit since it is two step process. Before next run of service task
4297  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4298  * hung condition remain unchanged and during subsequent run, this function
4299  * issues SW interrupt to recover from hung condition.
4300  **/
4301 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4302 {
4303         struct i40e_ring *tx_ring = NULL;
4304         struct i40e_pf  *pf;
4305         u32 head, val, tx_pending;
4306         int i;
4307
4308         pf = vsi->back;
4309
4310         /* now that we have an index, find the tx_ring struct */
4311         for (i = 0; i < vsi->num_queue_pairs; i++) {
4312                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4313                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4314                                 tx_ring = vsi->tx_rings[i];
4315                                 break;
4316                         }
4317                 }
4318         }
4319
4320         if (!tx_ring)
4321                 return;
4322
4323         /* Read interrupt register */
4324         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4325                 val = rd32(&pf->hw,
4326                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4327                                                tx_ring->vsi->base_vector - 1));
4328         else
4329                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4330
4331         /* Bail out if interrupts are disabled because napi_poll
4332          * execution in-progress or will get scheduled soon.
4333          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4334          */
4335         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4336                 return;
4337
4338         head = i40e_get_head(tx_ring);
4339
4340         tx_pending = i40e_get_tx_pending(tx_ring);
4341
4342         /* HW is done executing descriptors, updated HEAD write back,
4343          * but SW hasn't processed those descriptors. If interrupt is
4344          * not generated from this point ON, it could result into
4345          * dev_watchdog detecting timeout on those netdev_queue,
4346          * hence proactively trigger SW interrupt.
4347          */
4348         if (tx_pending) {
4349                 /* NAPI Poll didn't run and clear since it was set */
4350                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4351                                        &tx_ring->q_vector->hung_detected)) {
4352                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4353                                     vsi->seid, q_idx, tx_pending,
4354                                     tx_ring->next_to_clean, head,
4355                                     tx_ring->next_to_use,
4356                                     readl(tx_ring->tail));
4357                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4358                                     vsi->seid, q_idx, val);
4359                         i40e_force_wb(vsi, tx_ring->q_vector);
4360                 } else {
4361                         /* First Chance - detected possible hung */
4362                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4363                                 &tx_ring->q_vector->hung_detected);
4364                 }
4365         }
4366 }
4367
4368 /**
4369  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4370  * @pf:  pointer to PF struct
4371  *
4372  * LAN VSI has netdev and netdev has TX queues. This function is to check
4373  * each of those TX queues if they are hung, trigger recovery by issuing
4374  * SW interrupt.
4375  **/
4376 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4377 {
4378         struct net_device *netdev;
4379         struct i40e_vsi *vsi;
4380         int i;
4381
4382         /* Only for LAN VSI */
4383         vsi = pf->vsi[pf->lan_vsi];
4384
4385         if (!vsi)
4386                 return;
4387
4388         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4389         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4390             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4391                 return;
4392
4393         /* Make sure type is MAIN VSI */
4394         if (vsi->type != I40E_VSI_MAIN)
4395                 return;
4396
4397         netdev = vsi->netdev;
4398         if (!netdev)
4399                 return;
4400
4401         /* Bail out if netif_carrier is not OK */
4402         if (!netif_carrier_ok(netdev))
4403                 return;
4404
4405         /* Go thru' TX queues for netdev */
4406         for (i = 0; i < netdev->num_tx_queues; i++) {
4407                 struct netdev_queue *q;
4408
4409                 q = netdev_get_tx_queue(netdev, i);
4410                 if (q)
4411                         i40e_detect_recover_hung_queue(i, vsi);
4412         }
4413 }
4414
4415 /**
4416  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4417  * @pf: pointer to PF
4418  *
4419  * Get TC map for ISCSI PF type that will include iSCSI TC
4420  * and LAN TC.
4421  **/
4422 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4423 {
4424         struct i40e_dcb_app_priority_table app;
4425         struct i40e_hw *hw = &pf->hw;
4426         u8 enabled_tc = 1; /* TC0 is always enabled */
4427         u8 tc, i;
4428         /* Get the iSCSI APP TLV */
4429         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4430
4431         for (i = 0; i < dcbcfg->numapps; i++) {
4432                 app = dcbcfg->app[i];
4433                 if (app.selector == I40E_APP_SEL_TCPIP &&
4434                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4435                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4436                         enabled_tc |= BIT_ULL(tc);
4437                         break;
4438                 }
4439         }
4440
4441         return enabled_tc;
4442 }
4443
4444 /**
4445  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4446  * @dcbcfg: the corresponding DCBx configuration structure
4447  *
4448  * Return the number of TCs from given DCBx configuration
4449  **/
4450 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4451 {
4452         u8 num_tc = 0;
4453         int i;
4454
4455         /* Scan the ETS Config Priority Table to find
4456          * traffic class enabled for a given priority
4457          * and use the traffic class index to get the
4458          * number of traffic classes enabled
4459          */
4460         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4461                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4462                         num_tc = dcbcfg->etscfg.prioritytable[i];
4463         }
4464
4465         /* Traffic class index starts from zero so
4466          * increment to return the actual count
4467          */
4468         return num_tc + 1;
4469 }
4470
4471 /**
4472  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4473  * @dcbcfg: the corresponding DCBx configuration structure
4474  *
4475  * Query the current DCB configuration and return the number of
4476  * traffic classes enabled from the given DCBX config
4477  **/
4478 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4479 {
4480         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4481         u8 enabled_tc = 1;
4482         u8 i;
4483
4484         for (i = 0; i < num_tc; i++)
4485                 enabled_tc |= BIT(i);
4486
4487         return enabled_tc;
4488 }
4489
4490 /**
4491  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4492  * @pf: PF being queried
4493  *
4494  * Return number of traffic classes enabled for the given PF
4495  **/
4496 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4497 {
4498         struct i40e_hw *hw = &pf->hw;
4499         u8 i, enabled_tc;
4500         u8 num_tc = 0;
4501         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4502
4503         /* If DCB is not enabled then always in single TC */
4504         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4505                 return 1;
4506
4507         /* SFP mode will be enabled for all TCs on port */
4508         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4509                 return i40e_dcb_get_num_tc(dcbcfg);
4510
4511         /* MFP mode return count of enabled TCs for this PF */
4512         if (pf->hw.func_caps.iscsi)
4513                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4514         else
4515                 return 1; /* Only TC0 */
4516
4517         /* At least have TC0 */
4518         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4520                 if (enabled_tc & BIT_ULL(i))
4521                         num_tc++;
4522         }
4523         return num_tc;
4524 }
4525
4526 /**
4527  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4528  * @pf: PF being queried
4529  *
4530  * Return a bitmap for first enabled traffic class for this PF.
4531  **/
4532 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4533 {
4534         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4535         u8 i = 0;
4536
4537         if (!enabled_tc)
4538                 return 0x1; /* TC0 */
4539
4540         /* Find the first enabled TC */
4541         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4542                 if (enabled_tc & BIT_ULL(i))
4543                         break;
4544         }
4545
4546         return BIT(i);
4547 }
4548
4549 /**
4550  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4551  * @pf: PF being queried
4552  *
4553  * Return a bitmap for enabled traffic classes for this PF.
4554  **/
4555 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4556 {
4557         /* If DCB is not enabled for this PF then just return default TC */
4558         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4559                 return i40e_pf_get_default_tc(pf);
4560
4561         /* SFP mode we want PF to be enabled for all TCs */
4562         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4563                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4564
4565         /* MFP enabled and iSCSI PF type */
4566         if (pf->hw.func_caps.iscsi)
4567                 return i40e_get_iscsi_tc_map(pf);
4568         else
4569                 return i40e_pf_get_default_tc(pf);
4570 }
4571
4572 /**
4573  * i40e_vsi_get_bw_info - Query VSI BW Information
4574  * @vsi: the VSI being queried
4575  *
4576  * Returns 0 on success, negative value on failure
4577  **/
4578 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4579 {
4580         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4581         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4582         struct i40e_pf *pf = vsi->back;
4583         struct i40e_hw *hw = &pf->hw;
4584         i40e_status ret;
4585         u32 tc_bw_max;
4586         int i;
4587
4588         /* Get the VSI level BW configuration */
4589         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4590         if (ret) {
4591                 dev_info(&pf->pdev->dev,
4592                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4593                          i40e_stat_str(&pf->hw, ret),
4594                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4595                 return -EINVAL;
4596         }
4597
4598         /* Get the VSI level BW configuration per TC */
4599         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4600                                                NULL);
4601         if (ret) {
4602                 dev_info(&pf->pdev->dev,
4603                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4604                          i40e_stat_str(&pf->hw, ret),
4605                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4606                 return -EINVAL;
4607         }
4608
4609         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4610                 dev_info(&pf->pdev->dev,
4611                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4612                          bw_config.tc_valid_bits,
4613                          bw_ets_config.tc_valid_bits);
4614                 /* Still continuing */
4615         }
4616
4617         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4618         vsi->bw_max_quanta = bw_config.max_bw;
4619         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4620                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4621         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4622                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4623                 vsi->bw_ets_limit_credits[i] =
4624                                         le16_to_cpu(bw_ets_config.credits[i]);
4625                 /* 3 bits out of 4 for each TC */
4626                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4627         }
4628
4629         return 0;
4630 }
4631
4632 /**
4633  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4634  * @vsi: the VSI being configured
4635  * @enabled_tc: TC bitmap
4636  * @bw_credits: BW shared credits per TC
4637  *
4638  * Returns 0 on success, negative value on failure
4639  **/
4640 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4641                                        u8 *bw_share)
4642 {
4643         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4644         i40e_status ret;
4645         int i;
4646
4647         bw_data.tc_valid_bits = enabled_tc;
4648         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4649                 bw_data.tc_bw_credits[i] = bw_share[i];
4650
4651         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4652                                        NULL);
4653         if (ret) {
4654                 dev_info(&vsi->back->pdev->dev,
4655                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4656                          vsi->back->hw.aq.asq_last_status);
4657                 return -EINVAL;
4658         }
4659
4660         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4661                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4662
4663         return 0;
4664 }
4665
4666 /**
4667  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4668  * @vsi: the VSI being configured
4669  * @enabled_tc: TC map to be enabled
4670  *
4671  **/
4672 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4673 {
4674         struct net_device *netdev = vsi->netdev;
4675         struct i40e_pf *pf = vsi->back;
4676         struct i40e_hw *hw = &pf->hw;
4677         u8 netdev_tc = 0;
4678         int i;
4679         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4680
4681         if (!netdev)
4682                 return;
4683
4684         if (!enabled_tc) {
4685                 netdev_reset_tc(netdev);
4686                 return;
4687         }
4688
4689         /* Set up actual enabled TCs on the VSI */
4690         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4691                 return;
4692
4693         /* set per TC queues for the VSI */
4694         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4695                 /* Only set TC queues for enabled tcs
4696                  *
4697                  * e.g. For a VSI that has TC0 and TC3 enabled the
4698                  * enabled_tc bitmap would be 0x00001001; the driver
4699                  * will set the numtc for netdev as 2 that will be
4700                  * referenced by the netdev layer as TC 0 and 1.
4701                  */
4702                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4703                         netdev_set_tc_queue(netdev,
4704                                         vsi->tc_config.tc_info[i].netdev_tc,
4705                                         vsi->tc_config.tc_info[i].qcount,
4706                                         vsi->tc_config.tc_info[i].qoffset);
4707         }
4708
4709         /* Assign UP2TC map for the VSI */
4710         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4711                 /* Get the actual TC# for the UP */
4712                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4713                 /* Get the mapped netdev TC# for the UP */
4714                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4715                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4716         }
4717 }
4718
4719 /**
4720  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4721  * @vsi: the VSI being configured
4722  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4723  **/
4724 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4725                                       struct i40e_vsi_context *ctxt)
4726 {
4727         /* copy just the sections touched not the entire info
4728          * since not all sections are valid as returned by
4729          * update vsi params
4730          */
4731         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4732         memcpy(&vsi->info.queue_mapping,
4733                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4734         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4735                sizeof(vsi->info.tc_mapping));
4736 }
4737
4738 /**
4739  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4740  * @vsi: VSI to be configured
4741  * @enabled_tc: TC bitmap
4742  *
4743  * This configures a particular VSI for TCs that are mapped to the
4744  * given TC bitmap. It uses default bandwidth share for TCs across
4745  * VSIs to configure TC for a particular VSI.
4746  *
4747  * NOTE:
4748  * It is expected that the VSI queues have been quisced before calling
4749  * this function.
4750  **/
4751 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4752 {
4753         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4754         struct i40e_vsi_context ctxt;
4755         int ret = 0;
4756         int i;
4757
4758         /* Check if enabled_tc is same as existing or new TCs */
4759         if (vsi->tc_config.enabled_tc == enabled_tc)
4760                 return ret;
4761
4762         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4763         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4764                 if (enabled_tc & BIT_ULL(i))
4765                         bw_share[i] = 1;
4766         }
4767
4768         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4769         if (ret) {
4770                 dev_info(&vsi->back->pdev->dev,
4771                          "Failed configuring TC map %d for VSI %d\n",
4772                          enabled_tc, vsi->seid);
4773                 goto out;
4774         }
4775
4776         /* Update Queue Pairs Mapping for currently enabled UPs */
4777         ctxt.seid = vsi->seid;
4778         ctxt.pf_num = vsi->back->hw.pf_id;
4779         ctxt.vf_num = 0;
4780         ctxt.uplink_seid = vsi->uplink_seid;
4781         ctxt.info = vsi->info;
4782         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4783
4784         /* Update the VSI after updating the VSI queue-mapping information */
4785         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4786         if (ret) {
4787                 dev_info(&vsi->back->pdev->dev,
4788                          "Update vsi tc config failed, err %s aq_err %s\n",
4789                          i40e_stat_str(&vsi->back->hw, ret),
4790                          i40e_aq_str(&vsi->back->hw,
4791                                      vsi->back->hw.aq.asq_last_status));
4792                 goto out;
4793         }
4794         /* update the local VSI info with updated queue map */
4795         i40e_vsi_update_queue_map(vsi, &ctxt);
4796         vsi->info.valid_sections = 0;
4797
4798         /* Update current VSI BW information */
4799         ret = i40e_vsi_get_bw_info(vsi);
4800         if (ret) {
4801                 dev_info(&vsi->back->pdev->dev,
4802                          "Failed updating vsi bw info, err %s aq_err %s\n",
4803                          i40e_stat_str(&vsi->back->hw, ret),
4804                          i40e_aq_str(&vsi->back->hw,
4805                                      vsi->back->hw.aq.asq_last_status));
4806                 goto out;
4807         }
4808
4809         /* Update the netdev TC setup */
4810         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4811 out:
4812         return ret;
4813 }
4814
4815 /**
4816  * i40e_veb_config_tc - Configure TCs for given VEB
4817  * @veb: given VEB
4818  * @enabled_tc: TC bitmap
4819  *
4820  * Configures given TC bitmap for VEB (switching) element
4821  **/
4822 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4823 {
4824         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4825         struct i40e_pf *pf = veb->pf;
4826         int ret = 0;
4827         int i;
4828
4829         /* No TCs or already enabled TCs just return */
4830         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4831                 return ret;
4832
4833         bw_data.tc_valid_bits = enabled_tc;
4834         /* bw_data.absolute_credits is not set (relative) */
4835
4836         /* Enable ETS TCs with equal BW Share for now */
4837         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4838                 if (enabled_tc & BIT_ULL(i))
4839                         bw_data.tc_bw_share_credits[i] = 1;
4840         }
4841
4842         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4843                                                    &bw_data, NULL);
4844         if (ret) {
4845                 dev_info(&pf->pdev->dev,
4846                          "VEB bw config failed, err %s aq_err %s\n",
4847                          i40e_stat_str(&pf->hw, ret),
4848                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4849                 goto out;
4850         }
4851
4852         /* Update the BW information */
4853         ret = i40e_veb_get_bw_info(veb);
4854         if (ret) {
4855                 dev_info(&pf->pdev->dev,
4856                          "Failed getting veb bw config, err %s aq_err %s\n",
4857                          i40e_stat_str(&pf->hw, ret),
4858                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4859         }
4860
4861 out:
4862         return ret;
4863 }
4864
4865 #ifdef CONFIG_I40E_DCB
4866 /**
4867  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4868  * @pf: PF struct
4869  *
4870  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4871  * the caller would've quiesce all the VSIs before calling
4872  * this function
4873  **/
4874 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4875 {
4876         u8 tc_map = 0;
4877         int ret;
4878         u8 v;
4879
4880         /* Enable the TCs available on PF to all VEBs */
4881         tc_map = i40e_pf_get_tc_map(pf);
4882         for (v = 0; v < I40E_MAX_VEB; v++) {
4883                 if (!pf->veb[v])
4884                         continue;
4885                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4886                 if (ret) {
4887                         dev_info(&pf->pdev->dev,
4888                                  "Failed configuring TC for VEB seid=%d\n",
4889                                  pf->veb[v]->seid);
4890                         /* Will try to configure as many components */
4891                 }
4892         }
4893
4894         /* Update each VSI */
4895         for (v = 0; v < pf->num_alloc_vsi; v++) {
4896                 if (!pf->vsi[v])
4897                         continue;
4898
4899                 /* - Enable all TCs for the LAN VSI
4900 #ifdef I40E_FCOE
4901                  * - For FCoE VSI only enable the TC configured
4902                  *   as per the APP TLV
4903 #endif
4904                  * - For all others keep them at TC0 for now
4905                  */
4906                 if (v == pf->lan_vsi)
4907                         tc_map = i40e_pf_get_tc_map(pf);
4908                 else
4909                         tc_map = i40e_pf_get_default_tc(pf);
4910 #ifdef I40E_FCOE
4911                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4912                         tc_map = i40e_get_fcoe_tc_map(pf);
4913 #endif /* #ifdef I40E_FCOE */
4914
4915                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4916                 if (ret) {
4917                         dev_info(&pf->pdev->dev,
4918                                  "Failed configuring TC for VSI seid=%d\n",
4919                                  pf->vsi[v]->seid);
4920                         /* Will try to configure as many components */
4921                 } else {
4922                         /* Re-configure VSI vectors based on updated TC map */
4923                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4924                         if (pf->vsi[v]->netdev)
4925                                 i40e_dcbnl_set_all(pf->vsi[v]);
4926                 }
4927         }
4928 }
4929
4930 /**
4931  * i40e_resume_port_tx - Resume port Tx
4932  * @pf: PF struct
4933  *
4934  * Resume a port's Tx and issue a PF reset in case of failure to
4935  * resume.
4936  **/
4937 static int i40e_resume_port_tx(struct i40e_pf *pf)
4938 {
4939         struct i40e_hw *hw = &pf->hw;
4940         int ret;
4941
4942         ret = i40e_aq_resume_port_tx(hw, NULL);
4943         if (ret) {
4944                 dev_info(&pf->pdev->dev,
4945                          "Resume Port Tx failed, err %s aq_err %s\n",
4946                           i40e_stat_str(&pf->hw, ret),
4947                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4948                 /* Schedule PF reset to recover */
4949                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4950                 i40e_service_event_schedule(pf);
4951         }
4952
4953         return ret;
4954 }
4955
4956 /**
4957  * i40e_init_pf_dcb - Initialize DCB configuration
4958  * @pf: PF being configured
4959  *
4960  * Query the current DCB configuration and cache it
4961  * in the hardware structure
4962  **/
4963 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4964 {
4965         struct i40e_hw *hw = &pf->hw;
4966         int err = 0;
4967
4968         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4969         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4970             (pf->hw.aq.fw_maj_ver < 4))
4971                 goto out;
4972
4973         /* Get the initial DCB configuration */
4974         err = i40e_init_dcb(hw);
4975         if (!err) {
4976                 /* Device/Function is not DCBX capable */
4977                 if ((!hw->func_caps.dcb) ||
4978                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4979                         dev_info(&pf->pdev->dev,
4980                                  "DCBX offload is not supported or is disabled for this PF.\n");
4981
4982                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4983                                 goto out;
4984
4985                 } else {
4986                         /* When status is not DISABLED then DCBX in FW */
4987                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4988                                        DCB_CAP_DCBX_VER_IEEE;
4989
4990                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4991                         /* Enable DCB tagging only when more than one TC */
4992                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4993                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4994                         dev_dbg(&pf->pdev->dev,
4995                                 "DCBX offload is supported for this PF.\n");
4996                 }
4997         } else {
4998                 dev_info(&pf->pdev->dev,
4999                          "Query for DCB configuration failed, err %s aq_err %s\n",
5000                          i40e_stat_str(&pf->hw, err),
5001                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5002         }
5003
5004 out:
5005         return err;
5006 }
5007 #endif /* CONFIG_I40E_DCB */
5008 #define SPEED_SIZE 14
5009 #define FC_SIZE 8
5010 /**
5011  * i40e_print_link_message - print link up or down
5012  * @vsi: the VSI for which link needs a message
5013  */
5014 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5015 {
5016         char *speed = "Unknown";
5017         char *fc = "Unknown";
5018
5019         if (vsi->current_isup == isup)
5020                 return;
5021         vsi->current_isup = isup;
5022         if (!isup) {
5023                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5024                 return;
5025         }
5026
5027         /* Warn user if link speed on NPAR enabled partition is not at
5028          * least 10GB
5029          */
5030         if (vsi->back->hw.func_caps.npar_enable &&
5031             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5032              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5033                 netdev_warn(vsi->netdev,
5034                             "The partition detected link speed that is less than 10Gbps\n");
5035
5036         switch (vsi->back->hw.phy.link_info.link_speed) {
5037         case I40E_LINK_SPEED_40GB:
5038                 speed = "40 G";
5039                 break;
5040         case I40E_LINK_SPEED_20GB:
5041                 speed = "20 G";
5042                 break;
5043         case I40E_LINK_SPEED_10GB:
5044                 speed = "10 G";
5045                 break;
5046         case I40E_LINK_SPEED_1GB:
5047                 speed = "1000 M";
5048                 break;
5049         case I40E_LINK_SPEED_100MB:
5050                 speed = "100 M";
5051                 break;
5052         default:
5053                 break;
5054         }
5055
5056         switch (vsi->back->hw.fc.current_mode) {
5057         case I40E_FC_FULL:
5058                 fc = "RX/TX";
5059                 break;
5060         case I40E_FC_TX_PAUSE:
5061                 fc = "TX";
5062                 break;
5063         case I40E_FC_RX_PAUSE:
5064                 fc = "RX";
5065                 break;
5066         default:
5067                 fc = "None";
5068                 break;
5069         }
5070
5071         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5072                     speed, fc);
5073 }
5074
5075 /**
5076  * i40e_up_complete - Finish the last steps of bringing up a connection
5077  * @vsi: the VSI being configured
5078  **/
5079 static int i40e_up_complete(struct i40e_vsi *vsi)
5080 {
5081         struct i40e_pf *pf = vsi->back;
5082         int err;
5083
5084         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5085                 i40e_vsi_configure_msix(vsi);
5086         else
5087                 i40e_configure_msi_and_legacy(vsi);
5088
5089         /* start rings */
5090         err = i40e_vsi_control_rings(vsi, true);
5091         if (err)
5092                 return err;
5093
5094         clear_bit(__I40E_DOWN, &vsi->state);
5095         i40e_napi_enable_all(vsi);
5096         i40e_vsi_enable_irq(vsi);
5097
5098         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5099             (vsi->netdev)) {
5100                 i40e_print_link_message(vsi, true);
5101                 netif_tx_start_all_queues(vsi->netdev);
5102                 netif_carrier_on(vsi->netdev);
5103         } else if (vsi->netdev) {
5104                 i40e_print_link_message(vsi, false);
5105                 /* need to check for qualified module here*/
5106                 if ((pf->hw.phy.link_info.link_info &
5107                         I40E_AQ_MEDIA_AVAILABLE) &&
5108                     (!(pf->hw.phy.link_info.an_info &
5109                         I40E_AQ_QUALIFIED_MODULE)))
5110                         netdev_err(vsi->netdev,
5111                                    "the driver failed to link because an unqualified module was detected.");
5112         }
5113
5114         /* replay FDIR SB filters */
5115         if (vsi->type == I40E_VSI_FDIR) {
5116                 /* reset fd counters */
5117                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5118                 if (pf->fd_tcp_rule > 0) {
5119                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5120                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5121                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5122                         pf->fd_tcp_rule = 0;
5123                 }
5124                 i40e_fdir_filter_restore(vsi);
5125         }
5126         i40e_service_event_schedule(pf);
5127
5128         return 0;
5129 }
5130
5131 /**
5132  * i40e_vsi_reinit_locked - Reset the VSI
5133  * @vsi: the VSI being configured
5134  *
5135  * Rebuild the ring structs after some configuration
5136  * has changed, e.g. MTU size.
5137  **/
5138 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5139 {
5140         struct i40e_pf *pf = vsi->back;
5141
5142         WARN_ON(in_interrupt());
5143         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5144                 usleep_range(1000, 2000);
5145         i40e_down(vsi);
5146
5147         /* Give a VF some time to respond to the reset.  The
5148          * two second wait is based upon the watchdog cycle in
5149          * the VF driver.
5150          */
5151         if (vsi->type == I40E_VSI_SRIOV)
5152                 msleep(2000);
5153         i40e_up(vsi);
5154         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5155 }
5156
5157 /**
5158  * i40e_up - Bring the connection back up after being down
5159  * @vsi: the VSI being configured
5160  **/
5161 int i40e_up(struct i40e_vsi *vsi)
5162 {
5163         int err;
5164
5165         err = i40e_vsi_configure(vsi);
5166         if (!err)
5167                 err = i40e_up_complete(vsi);
5168
5169         return err;
5170 }
5171
5172 /**
5173  * i40e_down - Shutdown the connection processing
5174  * @vsi: the VSI being stopped
5175  **/
5176 void i40e_down(struct i40e_vsi *vsi)
5177 {
5178         int i;
5179
5180         /* It is assumed that the caller of this function
5181          * sets the vsi->state __I40E_DOWN bit.
5182          */
5183         if (vsi->netdev) {
5184                 netif_carrier_off(vsi->netdev);
5185                 netif_tx_disable(vsi->netdev);
5186         }
5187         i40e_vsi_disable_irq(vsi);
5188         i40e_vsi_control_rings(vsi, false);
5189         i40e_napi_disable_all(vsi);
5190
5191         for (i = 0; i < vsi->num_queue_pairs; i++) {
5192                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5193                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5194         }
5195 }
5196
5197 /**
5198  * i40e_setup_tc - configure multiple traffic classes
5199  * @netdev: net device to configure
5200  * @tc: number of traffic classes to enable
5201  **/
5202 #ifdef I40E_FCOE
5203 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5204 #else
5205 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5206 #endif
5207 {
5208         struct i40e_netdev_priv *np = netdev_priv(netdev);
5209         struct i40e_vsi *vsi = np->vsi;
5210         struct i40e_pf *pf = vsi->back;
5211         u8 enabled_tc = 0;
5212         int ret = -EINVAL;
5213         int i;
5214
5215         /* Check if DCB enabled to continue */
5216         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5217                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5218                 goto exit;
5219         }
5220
5221         /* Check if MFP enabled */
5222         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5223                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5224                 goto exit;
5225         }
5226
5227         /* Check whether tc count is within enabled limit */
5228         if (tc > i40e_pf_get_num_tc(pf)) {
5229                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5230                 goto exit;
5231         }
5232
5233         /* Generate TC map for number of tc requested */
5234         for (i = 0; i < tc; i++)
5235                 enabled_tc |= BIT_ULL(i);
5236
5237         /* Requesting same TC configuration as already enabled */
5238         if (enabled_tc == vsi->tc_config.enabled_tc)
5239                 return 0;
5240
5241         /* Quiesce VSI queues */
5242         i40e_quiesce_vsi(vsi);
5243
5244         /* Configure VSI for enabled TCs */
5245         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5246         if (ret) {
5247                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5248                             vsi->seid);
5249                 goto exit;
5250         }
5251
5252         /* Unquiesce VSI */
5253         i40e_unquiesce_vsi(vsi);
5254
5255 exit:
5256         return ret;
5257 }
5258
5259 /**
5260  * i40e_open - Called when a network interface is made active
5261  * @netdev: network interface device structure
5262  *
5263  * The open entry point is called when a network interface is made
5264  * active by the system (IFF_UP).  At this point all resources needed
5265  * for transmit and receive operations are allocated, the interrupt
5266  * handler is registered with the OS, the netdev watchdog subtask is
5267  * enabled, and the stack is notified that the interface is ready.
5268  *
5269  * Returns 0 on success, negative value on failure
5270  **/
5271 int i40e_open(struct net_device *netdev)
5272 {
5273         struct i40e_netdev_priv *np = netdev_priv(netdev);
5274         struct i40e_vsi *vsi = np->vsi;
5275         struct i40e_pf *pf = vsi->back;
5276         int err;
5277
5278         /* disallow open during test or if eeprom is broken */
5279         if (test_bit(__I40E_TESTING, &pf->state) ||
5280             test_bit(__I40E_BAD_EEPROM, &pf->state))
5281                 return -EBUSY;
5282
5283         netif_carrier_off(netdev);
5284
5285         err = i40e_vsi_open(vsi);
5286         if (err)
5287                 return err;
5288
5289         /* configure global TSO hardware offload settings */
5290         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5291                                                        TCP_FLAG_FIN) >> 16);
5292         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5293                                                        TCP_FLAG_FIN |
5294                                                        TCP_FLAG_CWR) >> 16);
5295         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5296
5297 #ifdef CONFIG_I40E_VXLAN
5298         vxlan_get_rx_port(netdev);
5299 #endif
5300
5301         return 0;
5302 }
5303
5304 /**
5305  * i40e_vsi_open -
5306  * @vsi: the VSI to open
5307  *
5308  * Finish initialization of the VSI.
5309  *
5310  * Returns 0 on success, negative value on failure
5311  **/
5312 int i40e_vsi_open(struct i40e_vsi *vsi)
5313 {
5314         struct i40e_pf *pf = vsi->back;
5315         char int_name[I40E_INT_NAME_STR_LEN];
5316         int err;
5317
5318         /* allocate descriptors */
5319         err = i40e_vsi_setup_tx_resources(vsi);
5320         if (err)
5321                 goto err_setup_tx;
5322         err = i40e_vsi_setup_rx_resources(vsi);
5323         if (err)
5324                 goto err_setup_rx;
5325
5326         err = i40e_vsi_configure(vsi);
5327         if (err)
5328                 goto err_setup_rx;
5329
5330         if (vsi->netdev) {
5331                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5332                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5333                 err = i40e_vsi_request_irq(vsi, int_name);
5334                 if (err)
5335                         goto err_setup_rx;
5336
5337                 /* Notify the stack of the actual queue counts. */
5338                 err = netif_set_real_num_tx_queues(vsi->netdev,
5339                                                    vsi->num_queue_pairs);
5340                 if (err)
5341                         goto err_set_queues;
5342
5343                 err = netif_set_real_num_rx_queues(vsi->netdev,
5344                                                    vsi->num_queue_pairs);
5345                 if (err)
5346                         goto err_set_queues;
5347
5348         } else if (vsi->type == I40E_VSI_FDIR) {
5349                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5350                          dev_driver_string(&pf->pdev->dev),
5351                          dev_name(&pf->pdev->dev));
5352                 err = i40e_vsi_request_irq(vsi, int_name);
5353
5354         } else {
5355                 err = -EINVAL;
5356                 goto err_setup_rx;
5357         }
5358
5359         err = i40e_up_complete(vsi);
5360         if (err)
5361                 goto err_up_complete;
5362
5363         return 0;
5364
5365 err_up_complete:
5366         i40e_down(vsi);
5367 err_set_queues:
5368         i40e_vsi_free_irq(vsi);
5369 err_setup_rx:
5370         i40e_vsi_free_rx_resources(vsi);
5371 err_setup_tx:
5372         i40e_vsi_free_tx_resources(vsi);
5373         if (vsi == pf->vsi[pf->lan_vsi])
5374                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5375
5376         return err;
5377 }
5378
5379 /**
5380  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5381  * @pf: Pointer to PF
5382  *
5383  * This function destroys the hlist where all the Flow Director
5384  * filters were saved.
5385  **/
5386 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5387 {
5388         struct i40e_fdir_filter *filter;
5389         struct hlist_node *node2;
5390
5391         hlist_for_each_entry_safe(filter, node2,
5392                                   &pf->fdir_filter_list, fdir_node) {
5393                 hlist_del(&filter->fdir_node);
5394                 kfree(filter);
5395         }
5396         pf->fdir_pf_active_filters = 0;
5397 }
5398
5399 /**
5400  * i40e_close - Disables a network interface
5401  * @netdev: network interface device structure
5402  *
5403  * The close entry point is called when an interface is de-activated
5404  * by the OS.  The hardware is still under the driver's control, but
5405  * this netdev interface is disabled.
5406  *
5407  * Returns 0, this is not allowed to fail
5408  **/
5409 #ifdef I40E_FCOE
5410 int i40e_close(struct net_device *netdev)
5411 #else
5412 static int i40e_close(struct net_device *netdev)
5413 #endif
5414 {
5415         struct i40e_netdev_priv *np = netdev_priv(netdev);
5416         struct i40e_vsi *vsi = np->vsi;
5417
5418         i40e_vsi_close(vsi);
5419
5420         return 0;
5421 }
5422
5423 /**
5424  * i40e_do_reset - Start a PF or Core Reset sequence
5425  * @pf: board private structure
5426  * @reset_flags: which reset is requested
5427  *
5428  * The essential difference in resets is that the PF Reset
5429  * doesn't clear the packet buffers, doesn't reset the PE
5430  * firmware, and doesn't bother the other PFs on the chip.
5431  **/
5432 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5433 {
5434         u32 val;
5435
5436         WARN_ON(in_interrupt());
5437
5438         if (i40e_check_asq_alive(&pf->hw))
5439                 i40e_vc_notify_reset(pf);
5440
5441         /* do the biggest reset indicated */
5442         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5443
5444                 /* Request a Global Reset
5445                  *
5446                  * This will start the chip's countdown to the actual full
5447                  * chip reset event, and a warning interrupt to be sent
5448                  * to all PFs, including the requestor.  Our handler
5449                  * for the warning interrupt will deal with the shutdown
5450                  * and recovery of the switch setup.
5451                  */
5452                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5453                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5454                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5455                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5456
5457         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5458
5459                 /* Request a Core Reset
5460                  *
5461                  * Same as Global Reset, except does *not* include the MAC/PHY
5462                  */
5463                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5464                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5465                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5466                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5467                 i40e_flush(&pf->hw);
5468
5469         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5470
5471                 /* Request a PF Reset
5472                  *
5473                  * Resets only the PF-specific registers
5474                  *
5475                  * This goes directly to the tear-down and rebuild of
5476                  * the switch, since we need to do all the recovery as
5477                  * for the Core Reset.
5478                  */
5479                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5480                 i40e_handle_reset_warning(pf);
5481
5482         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5483                 int v;
5484
5485                 /* Find the VSI(s) that requested a re-init */
5486                 dev_info(&pf->pdev->dev,
5487                          "VSI reinit requested\n");
5488                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5489                         struct i40e_vsi *vsi = pf->vsi[v];
5490
5491                         if (vsi != NULL &&
5492                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5493                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5494                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5495                         }
5496                 }
5497         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5498                 int v;
5499
5500                 /* Find the VSI(s) that needs to be brought down */
5501                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5502                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5503                         struct i40e_vsi *vsi = pf->vsi[v];
5504
5505                         if (vsi != NULL &&
5506                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5507                                 set_bit(__I40E_DOWN, &vsi->state);
5508                                 i40e_down(vsi);
5509                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5510                         }
5511                 }
5512         } else {
5513                 dev_info(&pf->pdev->dev,
5514                          "bad reset request 0x%08x\n", reset_flags);
5515         }
5516 }
5517
5518 #ifdef CONFIG_I40E_DCB
5519 /**
5520  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5521  * @pf: board private structure
5522  * @old_cfg: current DCB config
5523  * @new_cfg: new DCB config
5524  **/
5525 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5526                             struct i40e_dcbx_config *old_cfg,
5527                             struct i40e_dcbx_config *new_cfg)
5528 {
5529         bool need_reconfig = false;
5530
5531         /* Check if ETS configuration has changed */
5532         if (memcmp(&new_cfg->etscfg,
5533                    &old_cfg->etscfg,
5534                    sizeof(new_cfg->etscfg))) {
5535                 /* If Priority Table has changed reconfig is needed */
5536                 if (memcmp(&new_cfg->etscfg.prioritytable,
5537                            &old_cfg->etscfg.prioritytable,
5538                            sizeof(new_cfg->etscfg.prioritytable))) {
5539                         need_reconfig = true;
5540                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5541                 }
5542
5543                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5544                            &old_cfg->etscfg.tcbwtable,
5545                            sizeof(new_cfg->etscfg.tcbwtable)))
5546                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5547
5548                 if (memcmp(&new_cfg->etscfg.tsatable,
5549                            &old_cfg->etscfg.tsatable,
5550                            sizeof(new_cfg->etscfg.tsatable)))
5551                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5552         }
5553
5554         /* Check if PFC configuration has changed */
5555         if (memcmp(&new_cfg->pfc,
5556                    &old_cfg->pfc,
5557                    sizeof(new_cfg->pfc))) {
5558                 need_reconfig = true;
5559                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5560         }
5561
5562         /* Check if APP Table has changed */
5563         if (memcmp(&new_cfg->app,
5564                    &old_cfg->app,
5565                    sizeof(new_cfg->app))) {
5566                 need_reconfig = true;
5567                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5568         }
5569
5570         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5571         return need_reconfig;
5572 }
5573
5574 /**
5575  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5576  * @pf: board private structure
5577  * @e: event info posted on ARQ
5578  **/
5579 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5580                                   struct i40e_arq_event_info *e)
5581 {
5582         struct i40e_aqc_lldp_get_mib *mib =
5583                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5584         struct i40e_hw *hw = &pf->hw;
5585         struct i40e_dcbx_config tmp_dcbx_cfg;
5586         bool need_reconfig = false;
5587         int ret = 0;
5588         u8 type;
5589
5590         /* Not DCB capable or capability disabled */
5591         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5592                 return ret;
5593
5594         /* Ignore if event is not for Nearest Bridge */
5595         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5596                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5597         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5598         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5599                 return ret;
5600
5601         /* Check MIB Type and return if event for Remote MIB update */
5602         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5603         dev_dbg(&pf->pdev->dev,
5604                 "LLDP event mib type %s\n", type ? "remote" : "local");
5605         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5606                 /* Update the remote cached instance and return */
5607                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5608                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5609                                 &hw->remote_dcbx_config);
5610                 goto exit;
5611         }
5612
5613         /* Store the old configuration */
5614         tmp_dcbx_cfg = hw->local_dcbx_config;
5615
5616         /* Reset the old DCBx configuration data */
5617         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5618         /* Get updated DCBX data from firmware */
5619         ret = i40e_get_dcb_config(&pf->hw);
5620         if (ret) {
5621                 dev_info(&pf->pdev->dev,
5622                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5623                          i40e_stat_str(&pf->hw, ret),
5624                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5625                 goto exit;
5626         }
5627
5628         /* No change detected in DCBX configs */
5629         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5630                     sizeof(tmp_dcbx_cfg))) {
5631                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5632                 goto exit;
5633         }
5634
5635         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5636                                                &hw->local_dcbx_config);
5637
5638         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5639
5640         if (!need_reconfig)
5641                 goto exit;
5642
5643         /* Enable DCB tagging only when more than one TC */
5644         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5645                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5646         else
5647                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5648
5649         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5650         /* Reconfiguration needed quiesce all VSIs */
5651         i40e_pf_quiesce_all_vsi(pf);
5652
5653         /* Changes in configuration update VEB/VSI */
5654         i40e_dcb_reconfigure(pf);
5655
5656         ret = i40e_resume_port_tx(pf);
5657
5658         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5659         /* In case of error no point in resuming VSIs */
5660         if (ret)
5661                 goto exit;
5662
5663         /* Wait for the PF's Tx queues to be disabled */
5664         ret = i40e_pf_wait_txq_disabled(pf);
5665         if (ret) {
5666                 /* Schedule PF reset to recover */
5667                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5668                 i40e_service_event_schedule(pf);
5669         } else {
5670                 i40e_pf_unquiesce_all_vsi(pf);
5671         }
5672
5673 exit:
5674         return ret;
5675 }
5676 #endif /* CONFIG_I40E_DCB */
5677
5678 /**
5679  * i40e_do_reset_safe - Protected reset path for userland calls.
5680  * @pf: board private structure
5681  * @reset_flags: which reset is requested
5682  *
5683  **/
5684 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5685 {
5686         rtnl_lock();
5687         i40e_do_reset(pf, reset_flags);
5688         rtnl_unlock();
5689 }
5690
5691 /**
5692  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5693  * @pf: board private structure
5694  * @e: event info posted on ARQ
5695  *
5696  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5697  * and VF queues
5698  **/
5699 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5700                                            struct i40e_arq_event_info *e)
5701 {
5702         struct i40e_aqc_lan_overflow *data =
5703                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5704         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5705         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5706         struct i40e_hw *hw = &pf->hw;
5707         struct i40e_vf *vf;
5708         u16 vf_id;
5709
5710         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5711                 queue, qtx_ctl);
5712
5713         /* Queue belongs to VF, find the VF and issue VF reset */
5714         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5715             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5716                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5717                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5718                 vf_id -= hw->func_caps.vf_base_id;
5719                 vf = &pf->vf[vf_id];
5720                 i40e_vc_notify_vf_reset(vf);
5721                 /* Allow VF to process pending reset notification */
5722                 msleep(20);
5723                 i40e_reset_vf(vf, false);
5724         }
5725 }
5726
5727 /**
5728  * i40e_service_event_complete - Finish up the service event
5729  * @pf: board private structure
5730  **/
5731 static void i40e_service_event_complete(struct i40e_pf *pf)
5732 {
5733         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5734
5735         /* flush memory to make sure state is correct before next watchog */
5736         smp_mb__before_atomic();
5737         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5738 }
5739
5740 /**
5741  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5742  * @pf: board private structure
5743  **/
5744 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5745 {
5746         u32 val, fcnt_prog;
5747
5748         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5749         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5750         return fcnt_prog;
5751 }
5752
5753 /**
5754  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5755  * @pf: board private structure
5756  **/
5757 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5758 {
5759         u32 val, fcnt_prog;
5760
5761         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5762         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5763                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5764                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5765         return fcnt_prog;
5766 }
5767
5768 /**
5769  * i40e_get_global_fd_count - Get total FD filters programmed on device
5770  * @pf: board private structure
5771  **/
5772 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5773 {
5774         u32 val, fcnt_prog;
5775
5776         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5777         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5778                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5779                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5780         return fcnt_prog;
5781 }
5782
5783 /**
5784  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5785  * @pf: board private structure
5786  **/
5787 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5788 {
5789         struct i40e_fdir_filter *filter;
5790         u32 fcnt_prog, fcnt_avail;
5791         struct hlist_node *node;
5792
5793         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5794                 return;
5795
5796         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5797          * to re-enable
5798          */
5799         fcnt_prog = i40e_get_global_fd_count(pf);
5800         fcnt_avail = pf->fdir_pf_filter_count;
5801         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5802             (pf->fd_add_err == 0) ||
5803             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5804                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5805                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5806                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5807                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5808                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5809                 }
5810         }
5811         /* Wait for some more space to be available to turn on ATR */
5812         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5813                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5814                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5815                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5816                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5817                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5818                 }
5819         }
5820
5821         /* if hw had a problem adding a filter, delete it */
5822         if (pf->fd_inv > 0) {
5823                 hlist_for_each_entry_safe(filter, node,
5824                                           &pf->fdir_filter_list, fdir_node) {
5825                         if (filter->fd_id == pf->fd_inv) {
5826                                 hlist_del(&filter->fdir_node);
5827                                 kfree(filter);
5828                                 pf->fdir_pf_active_filters--;
5829                         }
5830                 }
5831         }
5832 }
5833
5834 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5835 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5836 /**
5837  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5838  * @pf: board private structure
5839  **/
5840 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5841 {
5842         unsigned long min_flush_time;
5843         int flush_wait_retry = 50;
5844         bool disable_atr = false;
5845         int fd_room;
5846         int reg;
5847
5848         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5849                 return;
5850
5851         if (!time_after(jiffies, pf->fd_flush_timestamp +
5852                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5853                 return;
5854
5855         /* If the flush is happening too quick and we have mostly SB rules we
5856          * should not re-enable ATR for some time.
5857          */
5858         min_flush_time = pf->fd_flush_timestamp +
5859                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5860         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5861
5862         if (!(time_after(jiffies, min_flush_time)) &&
5863             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5864                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5865                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5866                 disable_atr = true;
5867         }
5868
5869         pf->fd_flush_timestamp = jiffies;
5870         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5871         /* flush all filters */
5872         wr32(&pf->hw, I40E_PFQF_CTL_1,
5873              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5874         i40e_flush(&pf->hw);
5875         pf->fd_flush_cnt++;
5876         pf->fd_add_err = 0;
5877         do {
5878                 /* Check FD flush status every 5-6msec */
5879                 usleep_range(5000, 6000);
5880                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5881                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5882                         break;
5883         } while (flush_wait_retry--);
5884         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5885                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5886         } else {
5887                 /* replay sideband filters */
5888                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5889                 if (!disable_atr)
5890                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5891                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5892                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5893                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5894         }
5895
5896 }
5897
5898 /**
5899  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5900  * @pf: board private structure
5901  **/
5902 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5903 {
5904         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5905 }
5906
5907 /* We can see up to 256 filter programming desc in transit if the filters are
5908  * being applied really fast; before we see the first
5909  * filter miss error on Rx queue 0. Accumulating enough error messages before
5910  * reacting will make sure we don't cause flush too often.
5911  */
5912 #define I40E_MAX_FD_PROGRAM_ERROR 256
5913
5914 /**
5915  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5916  * @pf: board private structure
5917  **/
5918 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5919 {
5920
5921         /* if interface is down do nothing */
5922         if (test_bit(__I40E_DOWN, &pf->state))
5923                 return;
5924
5925         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5926                 return;
5927
5928         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5929                 i40e_fdir_flush_and_replay(pf);
5930
5931         i40e_fdir_check_and_reenable(pf);
5932
5933 }
5934
5935 /**
5936  * i40e_vsi_link_event - notify VSI of a link event
5937  * @vsi: vsi to be notified
5938  * @link_up: link up or down
5939  **/
5940 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5941 {
5942         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5943                 return;
5944
5945         switch (vsi->type) {
5946         case I40E_VSI_MAIN:
5947 #ifdef I40E_FCOE
5948         case I40E_VSI_FCOE:
5949 #endif
5950                 if (!vsi->netdev || !vsi->netdev_registered)
5951                         break;
5952
5953                 if (link_up) {
5954                         netif_carrier_on(vsi->netdev);
5955                         netif_tx_wake_all_queues(vsi->netdev);
5956                 } else {
5957                         netif_carrier_off(vsi->netdev);
5958                         netif_tx_stop_all_queues(vsi->netdev);
5959                 }
5960                 break;
5961
5962         case I40E_VSI_SRIOV:
5963         case I40E_VSI_VMDQ2:
5964         case I40E_VSI_CTRL:
5965         case I40E_VSI_MIRROR:
5966         default:
5967                 /* there is no notification for other VSIs */
5968                 break;
5969         }
5970 }
5971
5972 /**
5973  * i40e_veb_link_event - notify elements on the veb of a link event
5974  * @veb: veb to be notified
5975  * @link_up: link up or down
5976  **/
5977 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5978 {
5979         struct i40e_pf *pf;
5980         int i;
5981
5982         if (!veb || !veb->pf)
5983                 return;
5984         pf = veb->pf;
5985
5986         /* depth first... */
5987         for (i = 0; i < I40E_MAX_VEB; i++)
5988                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5989                         i40e_veb_link_event(pf->veb[i], link_up);
5990
5991         /* ... now the local VSIs */
5992         for (i = 0; i < pf->num_alloc_vsi; i++)
5993                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5994                         i40e_vsi_link_event(pf->vsi[i], link_up);
5995 }
5996
5997 /**
5998  * i40e_link_event - Update netif_carrier status
5999  * @pf: board private structure
6000  **/
6001 static void i40e_link_event(struct i40e_pf *pf)
6002 {
6003         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6004         u8 new_link_speed, old_link_speed;
6005         i40e_status status;
6006         bool new_link, old_link;
6007
6008         /* save off old link status information */
6009         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6010
6011         /* set this to force the get_link_status call to refresh state */
6012         pf->hw.phy.get_link_info = true;
6013
6014         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6015
6016         status = i40e_get_link_status(&pf->hw, &new_link);
6017         if (status) {
6018                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6019                         status);
6020                 return;
6021         }
6022
6023         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6024         new_link_speed = pf->hw.phy.link_info.link_speed;
6025
6026         if (new_link == old_link &&
6027             new_link_speed == old_link_speed &&
6028             (test_bit(__I40E_DOWN, &vsi->state) ||
6029              new_link == netif_carrier_ok(vsi->netdev)))
6030                 return;
6031
6032         if (!test_bit(__I40E_DOWN, &vsi->state))
6033                 i40e_print_link_message(vsi, new_link);
6034
6035         /* Notify the base of the switch tree connected to
6036          * the link.  Floating VEBs are not notified.
6037          */
6038         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6039                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6040         else
6041                 i40e_vsi_link_event(vsi, new_link);
6042
6043         if (pf->vf)
6044                 i40e_vc_notify_link_state(pf);
6045
6046         if (pf->flags & I40E_FLAG_PTP)
6047                 i40e_ptp_set_increment(pf);
6048 }
6049
6050 /**
6051  * i40e_watchdog_subtask - periodic checks not using event driven response
6052  * @pf: board private structure
6053  **/
6054 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6055 {
6056         int i;
6057
6058         /* if interface is down do nothing */
6059         if (test_bit(__I40E_DOWN, &pf->state) ||
6060             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6061                 return;
6062
6063         /* make sure we don't do these things too often */
6064         if (time_before(jiffies, (pf->service_timer_previous +
6065                                   pf->service_timer_period)))
6066                 return;
6067         pf->service_timer_previous = jiffies;
6068
6069         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6070                 i40e_link_event(pf);
6071
6072         /* Update the stats for active netdevs so the network stack
6073          * can look at updated numbers whenever it cares to
6074          */
6075         for (i = 0; i < pf->num_alloc_vsi; i++)
6076                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6077                         i40e_update_stats(pf->vsi[i]);
6078
6079         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6080                 /* Update the stats for the active switching components */
6081                 for (i = 0; i < I40E_MAX_VEB; i++)
6082                         if (pf->veb[i])
6083                                 i40e_update_veb_stats(pf->veb[i]);
6084         }
6085
6086         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6087 }
6088
6089 /**
6090  * i40e_reset_subtask - Set up for resetting the device and driver
6091  * @pf: board private structure
6092  **/
6093 static void i40e_reset_subtask(struct i40e_pf *pf)
6094 {
6095         u32 reset_flags = 0;
6096
6097         rtnl_lock();
6098         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6099                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6100                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6101         }
6102         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6103                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6104                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6105         }
6106         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6107                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6108                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6109         }
6110         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6111                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6112                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6113         }
6114         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6115                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6116                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6117         }
6118
6119         /* If there's a recovery already waiting, it takes
6120          * precedence before starting a new reset sequence.
6121          */
6122         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6123                 i40e_handle_reset_warning(pf);
6124                 goto unlock;
6125         }
6126
6127         /* If we're already down or resetting, just bail */
6128         if (reset_flags &&
6129             !test_bit(__I40E_DOWN, &pf->state) &&
6130             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6131                 i40e_do_reset(pf, reset_flags);
6132
6133 unlock:
6134         rtnl_unlock();
6135 }
6136
6137 /**
6138  * i40e_handle_link_event - Handle link event
6139  * @pf: board private structure
6140  * @e: event info posted on ARQ
6141  **/
6142 static void i40e_handle_link_event(struct i40e_pf *pf,
6143                                    struct i40e_arq_event_info *e)
6144 {
6145         struct i40e_aqc_get_link_status *status =
6146                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6147
6148         /* Do a new status request to re-enable LSE reporting
6149          * and load new status information into the hw struct
6150          * This completely ignores any state information
6151          * in the ARQ event info, instead choosing to always
6152          * issue the AQ update link status command.
6153          */
6154         i40e_link_event(pf);
6155
6156         /* check for unqualified module, if link is down */
6157         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6158             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6159             (!(status->link_info & I40E_AQ_LINK_UP)))
6160                 dev_err(&pf->pdev->dev,
6161                         "The driver failed to link because an unqualified module was detected.\n");
6162 }
6163
6164 /**
6165  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6166  * @pf: board private structure
6167  **/
6168 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6169 {
6170         struct i40e_arq_event_info event;
6171         struct i40e_hw *hw = &pf->hw;
6172         u16 pending, i = 0;
6173         i40e_status ret;
6174         u16 opcode;
6175         u32 oldval;
6176         u32 val;
6177
6178         /* Do not run clean AQ when PF reset fails */
6179         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6180                 return;
6181
6182         /* check for error indications */
6183         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6184         oldval = val;
6185         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6186                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6187                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6188         }
6189         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6190                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6191                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6192         }
6193         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6194                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6195                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6196         }
6197         if (oldval != val)
6198                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6199
6200         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6201         oldval = val;
6202         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6203                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6204                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6205         }
6206         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6207                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6208                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6209         }
6210         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6211                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6212                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6213         }
6214         if (oldval != val)
6215                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6216
6217         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6218         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6219         if (!event.msg_buf)
6220                 return;
6221
6222         do {
6223                 ret = i40e_clean_arq_element(hw, &event, &pending);
6224                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6225                         break;
6226                 else if (ret) {
6227                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6228                         break;
6229                 }
6230
6231                 opcode = le16_to_cpu(event.desc.opcode);
6232                 switch (opcode) {
6233
6234                 case i40e_aqc_opc_get_link_status:
6235                         i40e_handle_link_event(pf, &event);
6236                         break;
6237                 case i40e_aqc_opc_send_msg_to_pf:
6238                         ret = i40e_vc_process_vf_msg(pf,
6239                                         le16_to_cpu(event.desc.retval),
6240                                         le32_to_cpu(event.desc.cookie_high),
6241                                         le32_to_cpu(event.desc.cookie_low),
6242                                         event.msg_buf,
6243                                         event.msg_len);
6244                         break;
6245                 case i40e_aqc_opc_lldp_update_mib:
6246                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6247 #ifdef CONFIG_I40E_DCB
6248                         rtnl_lock();
6249                         ret = i40e_handle_lldp_event(pf, &event);
6250                         rtnl_unlock();
6251 #endif /* CONFIG_I40E_DCB */
6252                         break;
6253                 case i40e_aqc_opc_event_lan_overflow:
6254                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6255                         i40e_handle_lan_overflow_event(pf, &event);
6256                         break;
6257                 case i40e_aqc_opc_send_msg_to_peer:
6258                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6259                         break;
6260                 case i40e_aqc_opc_nvm_erase:
6261                 case i40e_aqc_opc_nvm_update:
6262                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6263                         break;
6264                 default:
6265                         dev_info(&pf->pdev->dev,
6266                                  "ARQ Error: Unknown event 0x%04x received\n",
6267                                  opcode);
6268                         break;
6269                 }
6270         } while (pending && (i++ < pf->adminq_work_limit));
6271
6272         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6273         /* re-enable Admin queue interrupt cause */
6274         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6275         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6276         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6277         i40e_flush(hw);
6278
6279         kfree(event.msg_buf);
6280 }
6281
6282 /**
6283  * i40e_verify_eeprom - make sure eeprom is good to use
6284  * @pf: board private structure
6285  **/
6286 static void i40e_verify_eeprom(struct i40e_pf *pf)
6287 {
6288         int err;
6289
6290         err = i40e_diag_eeprom_test(&pf->hw);
6291         if (err) {
6292                 /* retry in case of garbage read */
6293                 err = i40e_diag_eeprom_test(&pf->hw);
6294                 if (err) {
6295                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6296                                  err);
6297                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6298                 }
6299         }
6300
6301         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6302                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6303                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6304         }
6305 }
6306
6307 /**
6308  * i40e_enable_pf_switch_lb
6309  * @pf: pointer to the PF structure
6310  *
6311  * enable switch loop back or die - no point in a return value
6312  **/
6313 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6314 {
6315         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6316         struct i40e_vsi_context ctxt;
6317         int ret;
6318
6319         ctxt.seid = pf->main_vsi_seid;
6320         ctxt.pf_num = pf->hw.pf_id;
6321         ctxt.vf_num = 0;
6322         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6323         if (ret) {
6324                 dev_info(&pf->pdev->dev,
6325                          "couldn't get PF vsi config, err %s aq_err %s\n",
6326                          i40e_stat_str(&pf->hw, ret),
6327                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6328                 return;
6329         }
6330         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6331         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6332         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6333
6334         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6335         if (ret) {
6336                 dev_info(&pf->pdev->dev,
6337                          "update vsi switch failed, err %s aq_err %s\n",
6338                          i40e_stat_str(&pf->hw, ret),
6339                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6340         }
6341 }
6342
6343 /**
6344  * i40e_disable_pf_switch_lb
6345  * @pf: pointer to the PF structure
6346  *
6347  * disable switch loop back or die - no point in a return value
6348  **/
6349 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6350 {
6351         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6352         struct i40e_vsi_context ctxt;
6353         int ret;
6354
6355         ctxt.seid = pf->main_vsi_seid;
6356         ctxt.pf_num = pf->hw.pf_id;
6357         ctxt.vf_num = 0;
6358         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6359         if (ret) {
6360                 dev_info(&pf->pdev->dev,
6361                          "couldn't get PF vsi config, err %s aq_err %s\n",
6362                          i40e_stat_str(&pf->hw, ret),
6363                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6364                 return;
6365         }
6366         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6367         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6368         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6369
6370         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6371         if (ret) {
6372                 dev_info(&pf->pdev->dev,
6373                          "update vsi switch failed, err %s aq_err %s\n",
6374                          i40e_stat_str(&pf->hw, ret),
6375                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6376         }
6377 }
6378
6379 /**
6380  * i40e_config_bridge_mode - Configure the HW bridge mode
6381  * @veb: pointer to the bridge instance
6382  *
6383  * Configure the loop back mode for the LAN VSI that is downlink to the
6384  * specified HW bridge instance. It is expected this function is called
6385  * when a new HW bridge is instantiated.
6386  **/
6387 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6388 {
6389         struct i40e_pf *pf = veb->pf;
6390
6391         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6392                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6393                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6394         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6395                 i40e_disable_pf_switch_lb(pf);
6396         else
6397                 i40e_enable_pf_switch_lb(pf);
6398 }
6399
6400 /**
6401  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6402  * @veb: pointer to the VEB instance
6403  *
6404  * This is a recursive function that first builds the attached VSIs then
6405  * recurses in to build the next layer of VEB.  We track the connections
6406  * through our own index numbers because the seid's from the HW could
6407  * change across the reset.
6408  **/
6409 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6410 {
6411         struct i40e_vsi *ctl_vsi = NULL;
6412         struct i40e_pf *pf = veb->pf;
6413         int v, veb_idx;
6414         int ret;
6415
6416         /* build VSI that owns this VEB, temporarily attached to base VEB */
6417         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6418                 if (pf->vsi[v] &&
6419                     pf->vsi[v]->veb_idx == veb->idx &&
6420                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6421                         ctl_vsi = pf->vsi[v];
6422                         break;
6423                 }
6424         }
6425         if (!ctl_vsi) {
6426                 dev_info(&pf->pdev->dev,
6427                          "missing owner VSI for veb_idx %d\n", veb->idx);
6428                 ret = -ENOENT;
6429                 goto end_reconstitute;
6430         }
6431         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6432                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6433         ret = i40e_add_vsi(ctl_vsi);
6434         if (ret) {
6435                 dev_info(&pf->pdev->dev,
6436                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6437                          veb->idx, ret);
6438                 goto end_reconstitute;
6439         }
6440         i40e_vsi_reset_stats(ctl_vsi);
6441
6442         /* create the VEB in the switch and move the VSI onto the VEB */
6443         ret = i40e_add_veb(veb, ctl_vsi);
6444         if (ret)
6445                 goto end_reconstitute;
6446
6447         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6448                 veb->bridge_mode = BRIDGE_MODE_VEB;
6449         else
6450                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6451         i40e_config_bridge_mode(veb);
6452
6453         /* create the remaining VSIs attached to this VEB */
6454         for (v = 0; v < pf->num_alloc_vsi; v++) {
6455                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6456                         continue;
6457
6458                 if (pf->vsi[v]->veb_idx == veb->idx) {
6459                         struct i40e_vsi *vsi = pf->vsi[v];
6460
6461                         vsi->uplink_seid = veb->seid;
6462                         ret = i40e_add_vsi(vsi);
6463                         if (ret) {
6464                                 dev_info(&pf->pdev->dev,
6465                                          "rebuild of vsi_idx %d failed: %d\n",
6466                                          v, ret);
6467                                 goto end_reconstitute;
6468                         }
6469                         i40e_vsi_reset_stats(vsi);
6470                 }
6471         }
6472
6473         /* create any VEBs attached to this VEB - RECURSION */
6474         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6475                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6476                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6477                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6478                         if (ret)
6479                                 break;
6480                 }
6481         }
6482
6483 end_reconstitute:
6484         return ret;
6485 }
6486
6487 /**
6488  * i40e_get_capabilities - get info about the HW
6489  * @pf: the PF struct
6490  **/
6491 static int i40e_get_capabilities(struct i40e_pf *pf)
6492 {
6493         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6494         u16 data_size;
6495         int buf_len;
6496         int err;
6497
6498         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6499         do {
6500                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6501                 if (!cap_buf)
6502                         return -ENOMEM;
6503
6504                 /* this loads the data into the hw struct for us */
6505                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6506                                             &data_size,
6507                                             i40e_aqc_opc_list_func_capabilities,
6508                                             NULL);
6509                 /* data loaded, buffer no longer needed */
6510                 kfree(cap_buf);
6511
6512                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6513                         /* retry with a larger buffer */
6514                         buf_len = data_size;
6515                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6516                         dev_info(&pf->pdev->dev,
6517                                  "capability discovery failed, err %s aq_err %s\n",
6518                                  i40e_stat_str(&pf->hw, err),
6519                                  i40e_aq_str(&pf->hw,
6520                                              pf->hw.aq.asq_last_status));
6521                         return -ENODEV;
6522                 }
6523         } while (err);
6524
6525         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6526                 dev_info(&pf->pdev->dev,
6527                          "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",
6528                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6529                          pf->hw.func_caps.num_msix_vectors,
6530                          pf->hw.func_caps.num_msix_vectors_vf,
6531                          pf->hw.func_caps.fd_filters_guaranteed,
6532                          pf->hw.func_caps.fd_filters_best_effort,
6533                          pf->hw.func_caps.num_tx_qp,
6534                          pf->hw.func_caps.num_vsis);
6535
6536 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6537                        + pf->hw.func_caps.num_vfs)
6538         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6539                 dev_info(&pf->pdev->dev,
6540                          "got num_vsis %d, setting num_vsis to %d\n",
6541                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6542                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6543         }
6544
6545         return 0;
6546 }
6547
6548 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6549
6550 /**
6551  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6552  * @pf: board private structure
6553  **/
6554 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6555 {
6556         struct i40e_vsi *vsi;
6557         int i;
6558
6559         /* quick workaround for an NVM issue that leaves a critical register
6560          * uninitialized
6561          */
6562         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6563                 static const u32 hkey[] = {
6564                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6565                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6566                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6567                         0x95b3a76d};
6568
6569                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6570                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6571         }
6572
6573         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6574                 return;
6575
6576         /* find existing VSI and see if it needs configuring */
6577         vsi = NULL;
6578         for (i = 0; i < pf->num_alloc_vsi; i++) {
6579                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6580                         vsi = pf->vsi[i];
6581                         break;
6582                 }
6583         }
6584
6585         /* create a new VSI if none exists */
6586         if (!vsi) {
6587                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6588                                      pf->vsi[pf->lan_vsi]->seid, 0);
6589                 if (!vsi) {
6590                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6591                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6592                         return;
6593                 }
6594         }
6595
6596         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6597 }
6598
6599 /**
6600  * i40e_fdir_teardown - release the Flow Director resources
6601  * @pf: board private structure
6602  **/
6603 static void i40e_fdir_teardown(struct i40e_pf *pf)
6604 {
6605         int i;
6606
6607         i40e_fdir_filter_exit(pf);
6608         for (i = 0; i < pf->num_alloc_vsi; i++) {
6609                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6610                         i40e_vsi_release(pf->vsi[i]);
6611                         break;
6612                 }
6613         }
6614 }
6615
6616 /**
6617  * i40e_prep_for_reset - prep for the core to reset
6618  * @pf: board private structure
6619  *
6620  * Close up the VFs and other things in prep for PF Reset.
6621   **/
6622 static void i40e_prep_for_reset(struct i40e_pf *pf)
6623 {
6624         struct i40e_hw *hw = &pf->hw;
6625         i40e_status ret = 0;
6626         u32 v;
6627
6628         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6629         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6630                 return;
6631
6632         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6633
6634         /* quiesce the VSIs and their queues that are not already DOWN */
6635         i40e_pf_quiesce_all_vsi(pf);
6636
6637         for (v = 0; v < pf->num_alloc_vsi; v++) {
6638                 if (pf->vsi[v])
6639                         pf->vsi[v]->seid = 0;
6640         }
6641
6642         i40e_shutdown_adminq(&pf->hw);
6643
6644         /* call shutdown HMC */
6645         if (hw->hmc.hmc_obj) {
6646                 ret = i40e_shutdown_lan_hmc(hw);
6647                 if (ret)
6648                         dev_warn(&pf->pdev->dev,
6649                                  "shutdown_lan_hmc failed: %d\n", ret);
6650         }
6651 }
6652
6653 /**
6654  * i40e_send_version - update firmware with driver version
6655  * @pf: PF struct
6656  */
6657 static void i40e_send_version(struct i40e_pf *pf)
6658 {
6659         struct i40e_driver_version dv;
6660
6661         dv.major_version = DRV_VERSION_MAJOR;
6662         dv.minor_version = DRV_VERSION_MINOR;
6663         dv.build_version = DRV_VERSION_BUILD;
6664         dv.subbuild_version = 0;
6665         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6666         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6667 }
6668
6669 /**
6670  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6671  * @pf: board private structure
6672  * @reinit: if the Main VSI needs to re-initialized.
6673  **/
6674 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6675 {
6676         struct i40e_hw *hw = &pf->hw;
6677         u8 set_fc_aq_fail = 0;
6678         i40e_status ret;
6679         u32 val;
6680         u32 v;
6681
6682         /* Now we wait for GRST to settle out.
6683          * We don't have to delete the VEBs or VSIs from the hw switch
6684          * because the reset will make them disappear.
6685          */
6686         ret = i40e_pf_reset(hw);
6687         if (ret) {
6688                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6689                 set_bit(__I40E_RESET_FAILED, &pf->state);
6690                 goto clear_recovery;
6691         }
6692         pf->pfr_count++;
6693
6694         if (test_bit(__I40E_DOWN, &pf->state))
6695                 goto clear_recovery;
6696         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6697
6698         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6699         ret = i40e_init_adminq(&pf->hw);
6700         if (ret) {
6701                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6702                          i40e_stat_str(&pf->hw, ret),
6703                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6704                 goto clear_recovery;
6705         }
6706
6707         /* re-verify the eeprom if we just had an EMP reset */
6708         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6709                 i40e_verify_eeprom(pf);
6710
6711         i40e_clear_pxe_mode(hw);
6712         ret = i40e_get_capabilities(pf);
6713         if (ret)
6714                 goto end_core_reset;
6715
6716         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6717                                 hw->func_caps.num_rx_qp,
6718                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6719         if (ret) {
6720                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6721                 goto end_core_reset;
6722         }
6723         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6724         if (ret) {
6725                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6726                 goto end_core_reset;
6727         }
6728
6729 #ifdef CONFIG_I40E_DCB
6730         ret = i40e_init_pf_dcb(pf);
6731         if (ret) {
6732                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6733                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6734                 /* Continue without DCB enabled */
6735         }
6736 #endif /* CONFIG_I40E_DCB */
6737 #ifdef I40E_FCOE
6738         i40e_init_pf_fcoe(pf);
6739
6740 #endif
6741         /* do basic switch setup */
6742         ret = i40e_setup_pf_switch(pf, reinit);
6743         if (ret)
6744                 goto end_core_reset;
6745
6746         /* driver is only interested in link up/down and module qualification
6747          * reports from firmware
6748          */
6749         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6750                                        I40E_AQ_EVENT_LINK_UPDOWN |
6751                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6752         if (ret)
6753                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6754                          i40e_stat_str(&pf->hw, ret),
6755                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6756
6757         /* make sure our flow control settings are restored */
6758         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6759         if (ret)
6760                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6761                         i40e_stat_str(&pf->hw, ret),
6762                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6763
6764         /* Rebuild the VSIs and VEBs that existed before reset.
6765          * They are still in our local switch element arrays, so only
6766          * need to rebuild the switch model in the HW.
6767          *
6768          * If there were VEBs but the reconstitution failed, we'll try
6769          * try to recover minimal use by getting the basic PF VSI working.
6770          */
6771         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6772                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6773                 /* find the one VEB connected to the MAC, and find orphans */
6774                 for (v = 0; v < I40E_MAX_VEB; v++) {
6775                         if (!pf->veb[v])
6776                                 continue;
6777
6778                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6779                             pf->veb[v]->uplink_seid == 0) {
6780                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6781
6782                                 if (!ret)
6783                                         continue;
6784
6785                                 /* If Main VEB failed, we're in deep doodoo,
6786                                  * so give up rebuilding the switch and set up
6787                                  * for minimal rebuild of PF VSI.
6788                                  * If orphan failed, we'll report the error
6789                                  * but try to keep going.
6790                                  */
6791                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6792                                         dev_info(&pf->pdev->dev,
6793                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6794                                                  ret);
6795                                         pf->vsi[pf->lan_vsi]->uplink_seid
6796                                                                 = pf->mac_seid;
6797                                         break;
6798                                 } else if (pf->veb[v]->uplink_seid == 0) {
6799                                         dev_info(&pf->pdev->dev,
6800                                                  "rebuild of orphan VEB failed: %d\n",
6801                                                  ret);
6802                                 }
6803                         }
6804                 }
6805         }
6806
6807         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6808                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6809                 /* no VEB, so rebuild only the Main VSI */
6810                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6811                 if (ret) {
6812                         dev_info(&pf->pdev->dev,
6813                                  "rebuild of Main VSI failed: %d\n", ret);
6814                         goto end_core_reset;
6815                 }
6816         }
6817
6818         /* Reconfigure hardware for allowing smaller MSS in the case
6819          * of TSO, so that we avoid the MDD being fired and causing
6820          * a reset in the case of small MSS+TSO.
6821          */
6822 #define I40E_REG_MSS          0x000E64DC
6823 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6824 #define I40E_64BYTE_MSS       0x400000
6825         val = rd32(hw, I40E_REG_MSS);
6826         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6827                 val &= ~I40E_REG_MSS_MIN_MASK;
6828                 val |= I40E_64BYTE_MSS;
6829                 wr32(hw, I40E_REG_MSS, val);
6830         }
6831
6832         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6833             (pf->hw.aq.fw_maj_ver < 4)) {
6834                 msleep(75);
6835                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6836                 if (ret)
6837                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6838                                  i40e_stat_str(&pf->hw, ret),
6839                                  i40e_aq_str(&pf->hw,
6840                                              pf->hw.aq.asq_last_status));
6841         }
6842         /* reinit the misc interrupt */
6843         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6844                 ret = i40e_setup_misc_vector(pf);
6845
6846         /* Add a filter to drop all Flow control frames from any VSI from being
6847          * transmitted. By doing so we stop a malicious VF from sending out
6848          * PAUSE or PFC frames and potentially controlling traffic for other
6849          * PF/VF VSIs.
6850          * The FW can still send Flow control frames if enabled.
6851          */
6852         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6853                                                        pf->main_vsi_seid);
6854
6855         /* restart the VSIs that were rebuilt and running before the reset */
6856         i40e_pf_unquiesce_all_vsi(pf);
6857
6858         if (pf->num_alloc_vfs) {
6859                 for (v = 0; v < pf->num_alloc_vfs; v++)
6860                         i40e_reset_vf(&pf->vf[v], true);
6861         }
6862
6863         /* tell the firmware that we're starting */
6864         i40e_send_version(pf);
6865
6866 end_core_reset:
6867         clear_bit(__I40E_RESET_FAILED, &pf->state);
6868 clear_recovery:
6869         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6870 }
6871
6872 /**
6873  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6874  * @pf: board private structure
6875  *
6876  * Close up the VFs and other things in prep for a Core Reset,
6877  * then get ready to rebuild the world.
6878  **/
6879 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6880 {
6881         i40e_prep_for_reset(pf);
6882         i40e_reset_and_rebuild(pf, false);
6883 }
6884
6885 /**
6886  * i40e_handle_mdd_event
6887  * @pf: pointer to the PF structure
6888  *
6889  * Called from the MDD irq handler to identify possibly malicious vfs
6890  **/
6891 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6892 {
6893         struct i40e_hw *hw = &pf->hw;
6894         bool mdd_detected = false;
6895         bool pf_mdd_detected = false;
6896         struct i40e_vf *vf;
6897         u32 reg;
6898         int i;
6899
6900         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6901                 return;
6902
6903         /* find what triggered the MDD event */
6904         reg = rd32(hw, I40E_GL_MDET_TX);
6905         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6906                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6907                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6908                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6909                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6910                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6911                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6912                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6913                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6914                                 pf->hw.func_caps.base_queue;
6915                 if (netif_msg_tx_err(pf))
6916                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6917                                  event, queue, pf_num, vf_num);
6918                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6919                 mdd_detected = true;
6920         }
6921         reg = rd32(hw, I40E_GL_MDET_RX);
6922         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6923                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6924                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6925                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6926                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6927                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6928                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6929                                 pf->hw.func_caps.base_queue;
6930                 if (netif_msg_rx_err(pf))
6931                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6932                                  event, queue, func);
6933                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6934                 mdd_detected = true;
6935         }
6936
6937         if (mdd_detected) {
6938                 reg = rd32(hw, I40E_PF_MDET_TX);
6939                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6940                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6941                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6942                         pf_mdd_detected = true;
6943                 }
6944                 reg = rd32(hw, I40E_PF_MDET_RX);
6945                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6946                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6947                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6948                         pf_mdd_detected = true;
6949                 }
6950                 /* Queue belongs to the PF, initiate a reset */
6951                 if (pf_mdd_detected) {
6952                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6953                         i40e_service_event_schedule(pf);
6954                 }
6955         }
6956
6957         /* see if one of the VFs needs its hand slapped */
6958         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6959                 vf = &(pf->vf[i]);
6960                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6961                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6962                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6963                         vf->num_mdd_events++;
6964                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6965                                  i);
6966                 }
6967
6968                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6969                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6970                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6971                         vf->num_mdd_events++;
6972                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6973                                  i);
6974                 }
6975
6976                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6977                         dev_info(&pf->pdev->dev,
6978                                  "Too many MDD events on VF %d, disabled\n", i);
6979                         dev_info(&pf->pdev->dev,
6980                                  "Use PF Control I/F to re-enable the VF\n");
6981                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6982                 }
6983         }
6984
6985         /* re-enable mdd interrupt cause */
6986         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6987         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6988         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6989         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6990         i40e_flush(hw);
6991 }
6992
6993 #ifdef CONFIG_I40E_VXLAN
6994 /**
6995  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6996  * @pf: board private structure
6997  **/
6998 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6999 {
7000         struct i40e_hw *hw = &pf->hw;
7001         i40e_status ret;
7002         __be16 port;
7003         int i;
7004
7005         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7006                 return;
7007
7008         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7009
7010         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7011                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7012                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7013                         port = pf->vxlan_ports[i];
7014                         if (port)
7015                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7016                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7017                                                      NULL, NULL);
7018                         else
7019                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7020
7021                         if (ret) {
7022                                 dev_info(&pf->pdev->dev,
7023                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7024                                          port ? "add" : "delete",
7025                                          ntohs(port), i,
7026                                          i40e_stat_str(&pf->hw, ret),
7027                                          i40e_aq_str(&pf->hw,
7028                                                     pf->hw.aq.asq_last_status));
7029                                 pf->vxlan_ports[i] = 0;
7030                         }
7031                 }
7032         }
7033 }
7034
7035 #endif
7036 /**
7037  * i40e_service_task - Run the driver's async subtasks
7038  * @work: pointer to work_struct containing our data
7039  **/
7040 static void i40e_service_task(struct work_struct *work)
7041 {
7042         struct i40e_pf *pf = container_of(work,
7043                                           struct i40e_pf,
7044                                           service_task);
7045         unsigned long start_time = jiffies;
7046
7047         /* don't bother with service tasks if a reset is in progress */
7048         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7049                 i40e_service_event_complete(pf);
7050                 return;
7051         }
7052
7053         i40e_detect_recover_hung(pf);
7054         i40e_reset_subtask(pf);
7055         i40e_handle_mdd_event(pf);
7056         i40e_vc_process_vflr_event(pf);
7057         i40e_watchdog_subtask(pf);
7058         i40e_fdir_reinit_subtask(pf);
7059         i40e_sync_filters_subtask(pf);
7060 #ifdef CONFIG_I40E_VXLAN
7061         i40e_sync_vxlan_filters_subtask(pf);
7062 #endif
7063         i40e_clean_adminq_subtask(pf);
7064
7065         i40e_service_event_complete(pf);
7066
7067         /* If the tasks have taken longer than one timer cycle or there
7068          * is more work to be done, reschedule the service task now
7069          * rather than wait for the timer to tick again.
7070          */
7071         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7072             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7073             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7074             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7075                 i40e_service_event_schedule(pf);
7076 }
7077
7078 /**
7079  * i40e_service_timer - timer callback
7080  * @data: pointer to PF struct
7081  **/
7082 static void i40e_service_timer(unsigned long data)
7083 {
7084         struct i40e_pf *pf = (struct i40e_pf *)data;
7085
7086         mod_timer(&pf->service_timer,
7087                   round_jiffies(jiffies + pf->service_timer_period));
7088         i40e_service_event_schedule(pf);
7089 }
7090
7091 /**
7092  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7093  * @vsi: the VSI being configured
7094  **/
7095 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7096 {
7097         struct i40e_pf *pf = vsi->back;
7098
7099         switch (vsi->type) {
7100         case I40E_VSI_MAIN:
7101                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7102                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7103                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7104                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7105                         vsi->num_q_vectors = pf->num_lan_msix;
7106                 else
7107                         vsi->num_q_vectors = 1;
7108
7109                 break;
7110
7111         case I40E_VSI_FDIR:
7112                 vsi->alloc_queue_pairs = 1;
7113                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7114                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7115                 vsi->num_q_vectors = 1;
7116                 break;
7117
7118         case I40E_VSI_VMDQ2:
7119                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7120                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7121                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7122                 vsi->num_q_vectors = pf->num_vmdq_msix;
7123                 break;
7124
7125         case I40E_VSI_SRIOV:
7126                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7127                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7128                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7129                 break;
7130
7131 #ifdef I40E_FCOE
7132         case I40E_VSI_FCOE:
7133                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7134                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7135                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7136                 vsi->num_q_vectors = pf->num_fcoe_msix;
7137                 break;
7138
7139 #endif /* I40E_FCOE */
7140         default:
7141                 WARN_ON(1);
7142                 return -ENODATA;
7143         }
7144
7145         return 0;
7146 }
7147
7148 /**
7149  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7150  * @type: VSI pointer
7151  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7152  *
7153  * On error: returns error code (negative)
7154  * On success: returns 0
7155  **/
7156 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7157 {
7158         int size;
7159         int ret = 0;
7160
7161         /* allocate memory for both Tx and Rx ring pointers */
7162         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7163         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7164         if (!vsi->tx_rings)
7165                 return -ENOMEM;
7166         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7167
7168         if (alloc_qvectors) {
7169                 /* allocate memory for q_vector pointers */
7170                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7171                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7172                 if (!vsi->q_vectors) {
7173                         ret = -ENOMEM;
7174                         goto err_vectors;
7175                 }
7176         }
7177         return ret;
7178
7179 err_vectors:
7180         kfree(vsi->tx_rings);
7181         return ret;
7182 }
7183
7184 /**
7185  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7186  * @pf: board private structure
7187  * @type: type of VSI
7188  *
7189  * On error: returns error code (negative)
7190  * On success: returns vsi index in PF (positive)
7191  **/
7192 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7193 {
7194         int ret = -ENODEV;
7195         struct i40e_vsi *vsi;
7196         int vsi_idx;
7197         int i;
7198
7199         /* Need to protect the allocation of the VSIs at the PF level */
7200         mutex_lock(&pf->switch_mutex);
7201
7202         /* VSI list may be fragmented if VSI creation/destruction has
7203          * been happening.  We can afford to do a quick scan to look
7204          * for any free VSIs in the list.
7205          *
7206          * find next empty vsi slot, looping back around if necessary
7207          */
7208         i = pf->next_vsi;
7209         while (i < pf->num_alloc_vsi && pf->vsi[i])
7210                 i++;
7211         if (i >= pf->num_alloc_vsi) {
7212                 i = 0;
7213                 while (i < pf->next_vsi && pf->vsi[i])
7214                         i++;
7215         }
7216
7217         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7218                 vsi_idx = i;             /* Found one! */
7219         } else {
7220                 ret = -ENODEV;
7221                 goto unlock_pf;  /* out of VSI slots! */
7222         }
7223         pf->next_vsi = ++i;
7224
7225         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7226         if (!vsi) {
7227                 ret = -ENOMEM;
7228                 goto unlock_pf;
7229         }
7230         vsi->type = type;
7231         vsi->back = pf;
7232         set_bit(__I40E_DOWN, &vsi->state);
7233         vsi->flags = 0;
7234         vsi->idx = vsi_idx;
7235         vsi->rx_itr_setting = pf->rx_itr_default;
7236         vsi->tx_itr_setting = pf->tx_itr_default;
7237         vsi->int_rate_limit = 0;
7238         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7239                                 pf->rss_table_size : 64;
7240         vsi->netdev_registered = false;
7241         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7242         INIT_LIST_HEAD(&vsi->mac_filter_list);
7243         vsi->irqs_ready = false;
7244
7245         ret = i40e_set_num_rings_in_vsi(vsi);
7246         if (ret)
7247                 goto err_rings;
7248
7249         ret = i40e_vsi_alloc_arrays(vsi, true);
7250         if (ret)
7251                 goto err_rings;
7252
7253         /* Setup default MSIX irq handler for VSI */
7254         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7255
7256         /* Initialize VSI lock */
7257         spin_lock_init(&vsi->mac_filter_list_lock);
7258         pf->vsi[vsi_idx] = vsi;
7259         ret = vsi_idx;
7260         goto unlock_pf;
7261
7262 err_rings:
7263         pf->next_vsi = i - 1;
7264         kfree(vsi);
7265 unlock_pf:
7266         mutex_unlock(&pf->switch_mutex);
7267         return ret;
7268 }
7269
7270 /**
7271  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7272  * @type: VSI pointer
7273  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7274  *
7275  * On error: returns error code (negative)
7276  * On success: returns 0
7277  **/
7278 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7279 {
7280         /* free the ring and vector containers */
7281         if (free_qvectors) {
7282                 kfree(vsi->q_vectors);
7283                 vsi->q_vectors = NULL;
7284         }
7285         kfree(vsi->tx_rings);
7286         vsi->tx_rings = NULL;
7287         vsi->rx_rings = NULL;
7288 }
7289
7290 /**
7291  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7292  * and lookup table
7293  * @vsi: Pointer to VSI structure
7294  */
7295 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7296 {
7297         if (!vsi)
7298                 return;
7299
7300         kfree(vsi->rss_hkey_user);
7301         vsi->rss_hkey_user = NULL;
7302
7303         kfree(vsi->rss_lut_user);
7304         vsi->rss_lut_user = NULL;
7305 }
7306
7307 /**
7308  * i40e_vsi_clear - Deallocate the VSI provided
7309  * @vsi: the VSI being un-configured
7310  **/
7311 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7312 {
7313         struct i40e_pf *pf;
7314
7315         if (!vsi)
7316                 return 0;
7317
7318         if (!vsi->back)
7319                 goto free_vsi;
7320         pf = vsi->back;
7321
7322         mutex_lock(&pf->switch_mutex);
7323         if (!pf->vsi[vsi->idx]) {
7324                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7325                         vsi->idx, vsi->idx, vsi, vsi->type);
7326                 goto unlock_vsi;
7327         }
7328
7329         if (pf->vsi[vsi->idx] != vsi) {
7330                 dev_err(&pf->pdev->dev,
7331                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7332                         pf->vsi[vsi->idx]->idx,
7333                         pf->vsi[vsi->idx],
7334                         pf->vsi[vsi->idx]->type,
7335                         vsi->idx, vsi, vsi->type);
7336                 goto unlock_vsi;
7337         }
7338
7339         /* updates the PF for this cleared vsi */
7340         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7341         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7342
7343         i40e_vsi_free_arrays(vsi, true);
7344         i40e_clear_rss_config_user(vsi);
7345
7346         pf->vsi[vsi->idx] = NULL;
7347         if (vsi->idx < pf->next_vsi)
7348                 pf->next_vsi = vsi->idx;
7349
7350 unlock_vsi:
7351         mutex_unlock(&pf->switch_mutex);
7352 free_vsi:
7353         kfree(vsi);
7354
7355         return 0;
7356 }
7357
7358 /**
7359  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7360  * @vsi: the VSI being cleaned
7361  **/
7362 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7363 {
7364         int i;
7365
7366         if (vsi->tx_rings && vsi->tx_rings[0]) {
7367                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7368                         kfree_rcu(vsi->tx_rings[i], rcu);
7369                         vsi->tx_rings[i] = NULL;
7370                         vsi->rx_rings[i] = NULL;
7371                 }
7372         }
7373 }
7374
7375 /**
7376  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7377  * @vsi: the VSI being configured
7378  **/
7379 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7380 {
7381         struct i40e_ring *tx_ring, *rx_ring;
7382         struct i40e_pf *pf = vsi->back;
7383         int i;
7384
7385         /* Set basic values in the rings to be used later during open() */
7386         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7387                 /* allocate space for both Tx and Rx in one shot */
7388                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7389                 if (!tx_ring)
7390                         goto err_out;
7391
7392                 tx_ring->queue_index = i;
7393                 tx_ring->reg_idx = vsi->base_queue + i;
7394                 tx_ring->ring_active = false;
7395                 tx_ring->vsi = vsi;
7396                 tx_ring->netdev = vsi->netdev;
7397                 tx_ring->dev = &pf->pdev->dev;
7398                 tx_ring->count = vsi->num_desc;
7399                 tx_ring->size = 0;
7400                 tx_ring->dcb_tc = 0;
7401                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7402                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7403                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7404                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7405                 vsi->tx_rings[i] = tx_ring;
7406
7407                 rx_ring = &tx_ring[1];
7408                 rx_ring->queue_index = i;
7409                 rx_ring->reg_idx = vsi->base_queue + i;
7410                 rx_ring->ring_active = false;
7411                 rx_ring->vsi = vsi;
7412                 rx_ring->netdev = vsi->netdev;
7413                 rx_ring->dev = &pf->pdev->dev;
7414                 rx_ring->count = vsi->num_desc;
7415                 rx_ring->size = 0;
7416                 rx_ring->dcb_tc = 0;
7417                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7418                         set_ring_16byte_desc_enabled(rx_ring);
7419                 else
7420                         clear_ring_16byte_desc_enabled(rx_ring);
7421                 vsi->rx_rings[i] = rx_ring;
7422         }
7423
7424         return 0;
7425
7426 err_out:
7427         i40e_vsi_clear_rings(vsi);
7428         return -ENOMEM;
7429 }
7430
7431 /**
7432  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7433  * @pf: board private structure
7434  * @vectors: the number of MSI-X vectors to request
7435  *
7436  * Returns the number of vectors reserved, or error
7437  **/
7438 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7439 {
7440         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7441                                         I40E_MIN_MSIX, vectors);
7442         if (vectors < 0) {
7443                 dev_info(&pf->pdev->dev,
7444                          "MSI-X vector reservation failed: %d\n", vectors);
7445                 vectors = 0;
7446         }
7447
7448         return vectors;
7449 }
7450
7451 /**
7452  * i40e_init_msix - Setup the MSIX capability
7453  * @pf: board private structure
7454  *
7455  * Work with the OS to set up the MSIX vectors needed.
7456  *
7457  * Returns the number of vectors reserved or negative on failure
7458  **/
7459 static int i40e_init_msix(struct i40e_pf *pf)
7460 {
7461         struct i40e_hw *hw = &pf->hw;
7462         int vectors_left;
7463         int v_budget, i;
7464         int v_actual;
7465
7466         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7467                 return -ENODEV;
7468
7469         /* The number of vectors we'll request will be comprised of:
7470          *   - Add 1 for "other" cause for Admin Queue events, etc.
7471          *   - The number of LAN queue pairs
7472          *      - Queues being used for RSS.
7473          *              We don't need as many as max_rss_size vectors.
7474          *              use rss_size instead in the calculation since that
7475          *              is governed by number of cpus in the system.
7476          *      - assumes symmetric Tx/Rx pairing
7477          *   - The number of VMDq pairs
7478 #ifdef I40E_FCOE
7479          *   - The number of FCOE qps.
7480 #endif
7481          * Once we count this up, try the request.
7482          *
7483          * If we can't get what we want, we'll simplify to nearly nothing
7484          * and try again.  If that still fails, we punt.
7485          */
7486         vectors_left = hw->func_caps.num_msix_vectors;
7487         v_budget = 0;
7488
7489         /* reserve one vector for miscellaneous handler */
7490         if (vectors_left) {
7491                 v_budget++;
7492                 vectors_left--;
7493         }
7494
7495         /* reserve vectors for the main PF traffic queues */
7496         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7497         vectors_left -= pf->num_lan_msix;
7498         v_budget += pf->num_lan_msix;
7499
7500         /* reserve one vector for sideband flow director */
7501         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7502                 if (vectors_left) {
7503                         v_budget++;
7504                         vectors_left--;
7505                 } else {
7506                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7507                 }
7508         }
7509
7510 #ifdef I40E_FCOE
7511         /* can we reserve enough for FCoE? */
7512         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7513                 if (!vectors_left)
7514                         pf->num_fcoe_msix = 0;
7515                 else if (vectors_left >= pf->num_fcoe_qps)
7516                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7517                 else
7518                         pf->num_fcoe_msix = 1;
7519                 v_budget += pf->num_fcoe_msix;
7520                 vectors_left -= pf->num_fcoe_msix;
7521         }
7522
7523 #endif
7524         /* any vectors left over go for VMDq support */
7525         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7526                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7527                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7528
7529                 /* if we're short on vectors for what's desired, we limit
7530                  * the queues per vmdq.  If this is still more than are
7531                  * available, the user will need to change the number of
7532                  * queues/vectors used by the PF later with the ethtool
7533                  * channels command
7534                  */
7535                 if (vmdq_vecs < vmdq_vecs_wanted)
7536                         pf->num_vmdq_qps = 1;
7537                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7538
7539                 v_budget += vmdq_vecs;
7540                 vectors_left -= vmdq_vecs;
7541         }
7542
7543         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7544                                    GFP_KERNEL);
7545         if (!pf->msix_entries)
7546                 return -ENOMEM;
7547
7548         for (i = 0; i < v_budget; i++)
7549                 pf->msix_entries[i].entry = i;
7550         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7551
7552         if (v_actual != v_budget) {
7553                 /* If we have limited resources, we will start with no vectors
7554                  * for the special features and then allocate vectors to some
7555                  * of these features based on the policy and at the end disable
7556                  * the features that did not get any vectors.
7557                  */
7558 #ifdef I40E_FCOE
7559                 pf->num_fcoe_qps = 0;
7560                 pf->num_fcoe_msix = 0;
7561 #endif
7562                 pf->num_vmdq_msix = 0;
7563         }
7564
7565         if (v_actual < I40E_MIN_MSIX) {
7566                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7567                 kfree(pf->msix_entries);
7568                 pf->msix_entries = NULL;
7569                 return -ENODEV;
7570
7571         } else if (v_actual == I40E_MIN_MSIX) {
7572                 /* Adjust for minimal MSIX use */
7573                 pf->num_vmdq_vsis = 0;
7574                 pf->num_vmdq_qps = 0;
7575                 pf->num_lan_qps = 1;
7576                 pf->num_lan_msix = 1;
7577
7578         } else if (v_actual != v_budget) {
7579                 int vec;
7580
7581                 /* reserve the misc vector */
7582                 vec = v_actual - 1;
7583
7584                 /* Scale vector usage down */
7585                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7586                 pf->num_vmdq_vsis = 1;
7587                 pf->num_vmdq_qps = 1;
7588                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7589
7590                 /* partition out the remaining vectors */
7591                 switch (vec) {
7592                 case 2:
7593                         pf->num_lan_msix = 1;
7594                         break;
7595                 case 3:
7596 #ifdef I40E_FCOE
7597                         /* give one vector to FCoE */
7598                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7599                                 pf->num_lan_msix = 1;
7600                                 pf->num_fcoe_msix = 1;
7601                         }
7602 #else
7603                         pf->num_lan_msix = 2;
7604 #endif
7605                         break;
7606                 default:
7607 #ifdef I40E_FCOE
7608                         /* give one vector to FCoE */
7609                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7610                                 pf->num_fcoe_msix = 1;
7611                                 vec--;
7612                         }
7613 #endif
7614                         /* give the rest to the PF */
7615                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7616                         break;
7617                 }
7618         }
7619
7620         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7621             (pf->num_vmdq_msix == 0)) {
7622                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7623                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7624         }
7625 #ifdef I40E_FCOE
7626
7627         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7628                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7629                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7630         }
7631 #endif
7632         return v_actual;
7633 }
7634
7635 /**
7636  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7637  * @vsi: the VSI being configured
7638  * @v_idx: index of the vector in the vsi struct
7639  *
7640  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7641  **/
7642 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7643 {
7644         struct i40e_q_vector *q_vector;
7645
7646         /* allocate q_vector */
7647         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7648         if (!q_vector)
7649                 return -ENOMEM;
7650
7651         q_vector->vsi = vsi;
7652         q_vector->v_idx = v_idx;
7653         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7654         if (vsi->netdev)
7655                 netif_napi_add(vsi->netdev, &q_vector->napi,
7656                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7657
7658         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7659         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7660
7661         /* tie q_vector and vsi together */
7662         vsi->q_vectors[v_idx] = q_vector;
7663
7664         return 0;
7665 }
7666
7667 /**
7668  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7669  * @vsi: the VSI being configured
7670  *
7671  * We allocate one q_vector per queue interrupt.  If allocation fails we
7672  * return -ENOMEM.
7673  **/
7674 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7675 {
7676         struct i40e_pf *pf = vsi->back;
7677         int v_idx, num_q_vectors;
7678         int err;
7679
7680         /* if not MSIX, give the one vector only to the LAN VSI */
7681         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7682                 num_q_vectors = vsi->num_q_vectors;
7683         else if (vsi == pf->vsi[pf->lan_vsi])
7684                 num_q_vectors = 1;
7685         else
7686                 return -EINVAL;
7687
7688         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7689                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7690                 if (err)
7691                         goto err_out;
7692         }
7693
7694         return 0;
7695
7696 err_out:
7697         while (v_idx--)
7698                 i40e_free_q_vector(vsi, v_idx);
7699
7700         return err;
7701 }
7702
7703 /**
7704  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7705  * @pf: board private structure to initialize
7706  **/
7707 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7708 {
7709         int vectors = 0;
7710         ssize_t size;
7711
7712         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7713                 vectors = i40e_init_msix(pf);
7714                 if (vectors < 0) {
7715                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7716 #ifdef I40E_FCOE
7717                                        I40E_FLAG_FCOE_ENABLED   |
7718 #endif
7719                                        I40E_FLAG_RSS_ENABLED    |
7720                                        I40E_FLAG_DCB_CAPABLE    |
7721                                        I40E_FLAG_SRIOV_ENABLED  |
7722                                        I40E_FLAG_FD_SB_ENABLED  |
7723                                        I40E_FLAG_FD_ATR_ENABLED |
7724                                        I40E_FLAG_VMDQ_ENABLED);
7725
7726                         /* rework the queue expectations without MSIX */
7727                         i40e_determine_queue_usage(pf);
7728                 }
7729         }
7730
7731         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7732             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7733                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7734                 vectors = pci_enable_msi(pf->pdev);
7735                 if (vectors < 0) {
7736                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7737                                  vectors);
7738                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7739                 }
7740                 vectors = 1;  /* one MSI or Legacy vector */
7741         }
7742
7743         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7744                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7745
7746         /* set up vector assignment tracking */
7747         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7748         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7749         if (!pf->irq_pile) {
7750                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7751                 return -ENOMEM;
7752         }
7753         pf->irq_pile->num_entries = vectors;
7754         pf->irq_pile->search_hint = 0;
7755
7756         /* track first vector for misc interrupts, ignore return */
7757         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7758
7759         return 0;
7760 }
7761
7762 /**
7763  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7764  * @pf: board private structure
7765  *
7766  * This sets up the handler for MSIX 0, which is used to manage the
7767  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7768  * when in MSI or Legacy interrupt mode.
7769  **/
7770 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7771 {
7772         struct i40e_hw *hw = &pf->hw;
7773         int err = 0;
7774
7775         /* Only request the irq if this is the first time through, and
7776          * not when we're rebuilding after a Reset
7777          */
7778         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7779                 err = request_irq(pf->msix_entries[0].vector,
7780                                   i40e_intr, 0, pf->int_name, pf);
7781                 if (err) {
7782                         dev_info(&pf->pdev->dev,
7783                                  "request_irq for %s failed: %d\n",
7784                                  pf->int_name, err);
7785                         return -EFAULT;
7786                 }
7787         }
7788
7789         i40e_enable_misc_int_causes(pf);
7790
7791         /* associate no queues to the misc vector */
7792         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7793         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7794
7795         i40e_flush(hw);
7796
7797         i40e_irq_dynamic_enable_icr0(pf);
7798
7799         return err;
7800 }
7801
7802 /**
7803  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7804  * @vsi: vsi structure
7805  * @seed: RSS hash seed
7806  **/
7807 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7808                               u8 *lut, u16 lut_size)
7809 {
7810         struct i40e_aqc_get_set_rss_key_data rss_key;
7811         struct i40e_pf *pf = vsi->back;
7812         struct i40e_hw *hw = &pf->hw;
7813         bool pf_lut = false;
7814         u8 *rss_lut;
7815         int ret, i;
7816
7817         memset(&rss_key, 0, sizeof(rss_key));
7818         memcpy(&rss_key, seed, sizeof(rss_key));
7819
7820         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7821         if (!rss_lut)
7822                 return -ENOMEM;
7823
7824         /* Populate the LUT with max no. of queues in round robin fashion */
7825         for (i = 0; i < vsi->rss_table_size; i++)
7826                 rss_lut[i] = i % vsi->rss_size;
7827
7828         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7829         if (ret) {
7830                 dev_info(&pf->pdev->dev,
7831                          "Cannot set RSS key, err %s aq_err %s\n",
7832                          i40e_stat_str(&pf->hw, ret),
7833                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7834                 goto config_rss_aq_out;
7835         }
7836
7837         if (vsi->type == I40E_VSI_MAIN)
7838                 pf_lut = true;
7839
7840         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7841                                   vsi->rss_table_size);
7842         if (ret)
7843                 dev_info(&pf->pdev->dev,
7844                          "Cannot set RSS lut, err %s aq_err %s\n",
7845                          i40e_stat_str(&pf->hw, ret),
7846                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7847
7848 config_rss_aq_out:
7849         kfree(rss_lut);
7850         return ret;
7851 }
7852
7853 /**
7854  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7855  * @vsi: VSI structure
7856  **/
7857 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7858 {
7859         u8 seed[I40E_HKEY_ARRAY_SIZE];
7860         struct i40e_pf *pf = vsi->back;
7861         u8 *lut;
7862         int ret;
7863
7864         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7865                 return 0;
7866
7867         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7868         if (!lut)
7869                 return -ENOMEM;
7870
7871         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7872         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7873         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7874         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7875         kfree(lut);
7876
7877         return ret;
7878 }
7879
7880 /**
7881  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7882  * @vsi: Pointer to vsi structure
7883  * @seed: RSS hash seed
7884  * @lut: Lookup table
7885  * @lut_size: Lookup table size
7886  *
7887  * Returns 0 on success, negative on failure
7888  **/
7889 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7890                                const u8 *lut, u16 lut_size)
7891 {
7892         struct i40e_pf *pf = vsi->back;
7893         struct i40e_hw *hw = &pf->hw;
7894         u8 i;
7895
7896         /* Fill out hash function seed */
7897         if (seed) {
7898                 u32 *seed_dw = (u32 *)seed;
7899
7900                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7901                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7902         }
7903
7904         if (lut) {
7905                 u32 *lut_dw = (u32 *)lut;
7906
7907                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7908                         return -EINVAL;
7909
7910                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7911                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7912         }
7913         i40e_flush(hw);
7914
7915         return 0;
7916 }
7917
7918 /**
7919  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7920  * @vsi: Pointer to VSI structure
7921  * @seed: Buffer to store the keys
7922  * @lut: Buffer to store the lookup table entries
7923  * @lut_size: Size of buffer to store the lookup table entries
7924  *
7925  * Returns 0 on success, negative on failure
7926  */
7927 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7928                             u8 *lut, u16 lut_size)
7929 {
7930         struct i40e_pf *pf = vsi->back;
7931         struct i40e_hw *hw = &pf->hw;
7932         u16 i;
7933
7934         if (seed) {
7935                 u32 *seed_dw = (u32 *)seed;
7936
7937                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7938                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7939         }
7940         if (lut) {
7941                 u32 *lut_dw = (u32 *)lut;
7942
7943                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7944                         return -EINVAL;
7945                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7946                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
7947         }
7948
7949         return 0;
7950 }
7951
7952 /**
7953  * i40e_config_rss - Configure RSS keys and lut
7954  * @vsi: Pointer to VSI structure
7955  * @seed: RSS hash seed
7956  * @lut: Lookup table
7957  * @lut_size: Lookup table size
7958  *
7959  * Returns 0 on success, negative on failure
7960  */
7961 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7962 {
7963         struct i40e_pf *pf = vsi->back;
7964
7965         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7966                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
7967         else
7968                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
7969 }
7970
7971 /**
7972  * i40e_get_rss - Get RSS keys and lut
7973  * @vsi: Pointer to VSI structure
7974  * @seed: Buffer to store the keys
7975  * @lut: Buffer to store the lookup table entries
7976  * lut_size: Size of buffer to store the lookup table entries
7977  *
7978  * Returns 0 on success, negative on failure
7979  */
7980 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7981 {
7982         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
7983 }
7984
7985 /**
7986  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
7987  * @pf: Pointer to board private structure
7988  * @lut: Lookup table
7989  * @rss_table_size: Lookup table size
7990  * @rss_size: Range of queue number for hashing
7991  */
7992 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
7993                               u16 rss_table_size, u16 rss_size)
7994 {
7995         u16 i;
7996
7997         for (i = 0; i < rss_table_size; i++)
7998                 lut[i] = i % rss_size;
7999 }
8000
8001 /**
8002  * i40e_pf_config_rss - Prepare for RSS if used
8003  * @pf: board private structure
8004  **/
8005 static int i40e_pf_config_rss(struct i40e_pf *pf)
8006 {
8007         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8008         u8 seed[I40E_HKEY_ARRAY_SIZE];
8009         u8 *lut;
8010         struct i40e_hw *hw = &pf->hw;
8011         u32 reg_val;
8012         u64 hena;
8013         int ret;
8014
8015         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8016         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8017                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8018         hena |= i40e_pf_get_default_rss_hena(pf);
8019
8020         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8021         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8022
8023         /* Determine the RSS table size based on the hardware capabilities */
8024         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8025         reg_val = (pf->rss_table_size == 512) ?
8026                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8027                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8028         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8029
8030         /* Determine the RSS size of the VSI */
8031         if (!vsi->rss_size)
8032                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8033                                       vsi->num_queue_pairs);
8034
8035         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8036         if (!lut)
8037                 return -ENOMEM;
8038
8039         /* Use user configured lut if there is one, otherwise use default */
8040         if (vsi->rss_lut_user)
8041                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8042         else
8043                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8044
8045         /* Use user configured hash key if there is one, otherwise
8046          * use default.
8047          */
8048         if (vsi->rss_hkey_user)
8049                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8050         else
8051                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8052         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8053         kfree(lut);
8054
8055         return ret;
8056 }
8057
8058 /**
8059  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8060  * @pf: board private structure
8061  * @queue_count: the requested queue count for rss.
8062  *
8063  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8064  * count which may be different from the requested queue count.
8065  **/
8066 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8067 {
8068         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8069         int new_rss_size;
8070
8071         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8072                 return 0;
8073
8074         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8075
8076         if (queue_count != vsi->num_queue_pairs) {
8077                 vsi->req_queue_pairs = queue_count;
8078                 i40e_prep_for_reset(pf);
8079
8080                 pf->alloc_rss_size = new_rss_size;
8081
8082                 i40e_reset_and_rebuild(pf, true);
8083
8084                 /* Discard the user configured hash keys and lut, if less
8085                  * queues are enabled.
8086                  */
8087                 if (queue_count < vsi->rss_size) {
8088                         i40e_clear_rss_config_user(vsi);
8089                         dev_dbg(&pf->pdev->dev,
8090                                 "discard user configured hash keys and lut\n");
8091                 }
8092
8093                 /* Reset vsi->rss_size, as number of enabled queues changed */
8094                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8095                                       vsi->num_queue_pairs);
8096
8097                 i40e_pf_config_rss(pf);
8098         }
8099         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8100                  pf->alloc_rss_size, pf->rss_size_max);
8101         return pf->alloc_rss_size;
8102 }
8103
8104 /**
8105  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8106  * @pf: board private structure
8107  **/
8108 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8109 {
8110         i40e_status status;
8111         bool min_valid, max_valid;
8112         u32 max_bw, min_bw;
8113
8114         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8115                                            &min_valid, &max_valid);
8116
8117         if (!status) {
8118                 if (min_valid)
8119                         pf->npar_min_bw = min_bw;
8120                 if (max_valid)
8121                         pf->npar_max_bw = max_bw;
8122         }
8123
8124         return status;
8125 }
8126
8127 /**
8128  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8129  * @pf: board private structure
8130  **/
8131 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8132 {
8133         struct i40e_aqc_configure_partition_bw_data bw_data;
8134         i40e_status status;
8135
8136         /* Set the valid bit for this PF */
8137         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8138         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8139         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8140
8141         /* Set the new bandwidths */
8142         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8143
8144         return status;
8145 }
8146
8147 /**
8148  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8149  * @pf: board private structure
8150  **/
8151 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8152 {
8153         /* Commit temporary BW setting to permanent NVM image */
8154         enum i40e_admin_queue_err last_aq_status;
8155         i40e_status ret;
8156         u16 nvm_word;
8157
8158         if (pf->hw.partition_id != 1) {
8159                 dev_info(&pf->pdev->dev,
8160                          "Commit BW only works on partition 1! This is partition %d",
8161                          pf->hw.partition_id);
8162                 ret = I40E_NOT_SUPPORTED;
8163                 goto bw_commit_out;
8164         }
8165
8166         /* Acquire NVM for read access */
8167         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8168         last_aq_status = pf->hw.aq.asq_last_status;
8169         if (ret) {
8170                 dev_info(&pf->pdev->dev,
8171                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8172                          i40e_stat_str(&pf->hw, ret),
8173                          i40e_aq_str(&pf->hw, last_aq_status));
8174                 goto bw_commit_out;
8175         }
8176
8177         /* Read word 0x10 of NVM - SW compatibility word 1 */
8178         ret = i40e_aq_read_nvm(&pf->hw,
8179                                I40E_SR_NVM_CONTROL_WORD,
8180                                0x10, sizeof(nvm_word), &nvm_word,
8181                                false, NULL);
8182         /* Save off last admin queue command status before releasing
8183          * the NVM
8184          */
8185         last_aq_status = pf->hw.aq.asq_last_status;
8186         i40e_release_nvm(&pf->hw);
8187         if (ret) {
8188                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8189                          i40e_stat_str(&pf->hw, ret),
8190                          i40e_aq_str(&pf->hw, last_aq_status));
8191                 goto bw_commit_out;
8192         }
8193
8194         /* Wait a bit for NVM release to complete */
8195         msleep(50);
8196
8197         /* Acquire NVM for write access */
8198         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8199         last_aq_status = pf->hw.aq.asq_last_status;
8200         if (ret) {
8201                 dev_info(&pf->pdev->dev,
8202                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8203                          i40e_stat_str(&pf->hw, ret),
8204                          i40e_aq_str(&pf->hw, last_aq_status));
8205                 goto bw_commit_out;
8206         }
8207         /* Write it back out unchanged to initiate update NVM,
8208          * which will force a write of the shadow (alt) RAM to
8209          * the NVM - thus storing the bandwidth values permanently.
8210          */
8211         ret = i40e_aq_update_nvm(&pf->hw,
8212                                  I40E_SR_NVM_CONTROL_WORD,
8213                                  0x10, sizeof(nvm_word),
8214                                  &nvm_word, true, NULL);
8215         /* Save off last admin queue command status before releasing
8216          * the NVM
8217          */
8218         last_aq_status = pf->hw.aq.asq_last_status;
8219         i40e_release_nvm(&pf->hw);
8220         if (ret)
8221                 dev_info(&pf->pdev->dev,
8222                          "BW settings NOT SAVED, err %s aq_err %s\n",
8223                          i40e_stat_str(&pf->hw, ret),
8224                          i40e_aq_str(&pf->hw, last_aq_status));
8225 bw_commit_out:
8226
8227         return ret;
8228 }
8229
8230 /**
8231  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8232  * @pf: board private structure to initialize
8233  *
8234  * i40e_sw_init initializes the Adapter private data structure.
8235  * Fields are initialized based on PCI device information and
8236  * OS network device settings (MTU size).
8237  **/
8238 static int i40e_sw_init(struct i40e_pf *pf)
8239 {
8240         int err = 0;
8241         int size;
8242
8243         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8244                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8245         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8246         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8247                 if (I40E_DEBUG_USER & debug)
8248                         pf->hw.debug_mask = debug;
8249                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8250                                                 I40E_DEFAULT_MSG_ENABLE);
8251         }
8252
8253         /* Set default capability flags */
8254         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8255                     I40E_FLAG_MSI_ENABLED     |
8256                     I40E_FLAG_LINK_POLLING_ENABLED |
8257                     I40E_FLAG_MSIX_ENABLED;
8258
8259         if (iommu_present(&pci_bus_type))
8260                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8261         else
8262                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8263
8264         /* Set default ITR */
8265         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8266         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8267
8268         /* Depending on PF configurations, it is possible that the RSS
8269          * maximum might end up larger than the available queues
8270          */
8271         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8272         pf->alloc_rss_size = 1;
8273         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8274         pf->rss_size_max = min_t(int, pf->rss_size_max,
8275                                  pf->hw.func_caps.num_tx_qp);
8276         if (pf->hw.func_caps.rss) {
8277                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8278                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8279                                            num_online_cpus());
8280         }
8281
8282         /* MFP mode enabled */
8283         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8284                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8285                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8286                 if (i40e_get_npar_bw_setting(pf))
8287                         dev_warn(&pf->pdev->dev,
8288                                  "Could not get NPAR bw settings\n");
8289                 else
8290                         dev_info(&pf->pdev->dev,
8291                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8292                                  pf->npar_min_bw, pf->npar_max_bw);
8293         }
8294
8295         /* FW/NVM is not yet fixed in this regard */
8296         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8297             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8298                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8299                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8300                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8301                     pf->hw.num_partitions > 1)
8302                         dev_info(&pf->pdev->dev,
8303                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8304                 else
8305                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8306                 pf->fdir_pf_filter_count =
8307                                  pf->hw.func_caps.fd_filters_guaranteed;
8308                 pf->hw.fdir_shared_filter_count =
8309                                  pf->hw.func_caps.fd_filters_best_effort;
8310         }
8311
8312         if (pf->hw.func_caps.vmdq) {
8313                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8314                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8315                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8316         }
8317
8318 #ifdef I40E_FCOE
8319         i40e_init_pf_fcoe(pf);
8320
8321 #endif /* I40E_FCOE */
8322 #ifdef CONFIG_PCI_IOV
8323         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8324                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8325                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8326                 pf->num_req_vfs = min_t(int,
8327                                         pf->hw.func_caps.num_vfs,
8328                                         I40E_MAX_VF_COUNT);
8329         }
8330 #endif /* CONFIG_PCI_IOV */
8331         if (pf->hw.mac.type == I40E_MAC_X722) {
8332                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8333                              I40E_FLAG_128_QP_RSS_CAPABLE |
8334                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8335                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8336                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8337                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8338         }
8339         pf->eeprom_version = 0xDEAD;
8340         pf->lan_veb = I40E_NO_VEB;
8341         pf->lan_vsi = I40E_NO_VSI;
8342
8343         /* By default FW has this off for performance reasons */
8344         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8345
8346         /* set up queue assignment tracking */
8347         size = sizeof(struct i40e_lump_tracking)
8348                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8349         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8350         if (!pf->qp_pile) {
8351                 err = -ENOMEM;
8352                 goto sw_init_done;
8353         }
8354         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8355         pf->qp_pile->search_hint = 0;
8356
8357         pf->tx_timeout_recovery_level = 1;
8358
8359         mutex_init(&pf->switch_mutex);
8360
8361         /* If NPAR is enabled nudge the Tx scheduler */
8362         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8363                 i40e_set_npar_bw_setting(pf);
8364
8365 sw_init_done:
8366         return err;
8367 }
8368
8369 /**
8370  * i40e_set_ntuple - set the ntuple feature flag and take action
8371  * @pf: board private structure to initialize
8372  * @features: the feature set that the stack is suggesting
8373  *
8374  * returns a bool to indicate if reset needs to happen
8375  **/
8376 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8377 {
8378         bool need_reset = false;
8379
8380         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8381          * the state changed, we need to reset.
8382          */
8383         if (features & NETIF_F_NTUPLE) {
8384                 /* Enable filters and mark for reset */
8385                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8386                         need_reset = true;
8387                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8388         } else {
8389                 /* turn off filters, mark for reset and clear SW filter list */
8390                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8391                         need_reset = true;
8392                         i40e_fdir_filter_exit(pf);
8393                 }
8394                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8395                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8396                 /* reset fd counters */
8397                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8398                 pf->fdir_pf_active_filters = 0;
8399                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8400                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8401                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8402                 /* if ATR was auto disabled it can be re-enabled. */
8403                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8404                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8405                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8406         }
8407         return need_reset;
8408 }
8409
8410 /**
8411  * i40e_set_features - set the netdev feature flags
8412  * @netdev: ptr to the netdev being adjusted
8413  * @features: the feature set that the stack is suggesting
8414  **/
8415 static int i40e_set_features(struct net_device *netdev,
8416                              netdev_features_t features)
8417 {
8418         struct i40e_netdev_priv *np = netdev_priv(netdev);
8419         struct i40e_vsi *vsi = np->vsi;
8420         struct i40e_pf *pf = vsi->back;
8421         bool need_reset;
8422
8423         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8424                 i40e_vlan_stripping_enable(vsi);
8425         else
8426                 i40e_vlan_stripping_disable(vsi);
8427
8428         need_reset = i40e_set_ntuple(pf, features);
8429
8430         if (need_reset)
8431                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8432
8433         return 0;
8434 }
8435
8436 #ifdef CONFIG_I40E_VXLAN
8437 /**
8438  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8439  * @pf: board private structure
8440  * @port: The UDP port to look up
8441  *
8442  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8443  **/
8444 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8445 {
8446         u8 i;
8447
8448         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8449                 if (pf->vxlan_ports[i] == port)
8450                         return i;
8451         }
8452
8453         return i;
8454 }
8455
8456 /**
8457  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8458  * @netdev: This physical port's netdev
8459  * @sa_family: Socket Family that VXLAN is notifying us about
8460  * @port: New UDP port number that VXLAN started listening to
8461  **/
8462 static void i40e_add_vxlan_port(struct net_device *netdev,
8463                                 sa_family_t sa_family, __be16 port)
8464 {
8465         struct i40e_netdev_priv *np = netdev_priv(netdev);
8466         struct i40e_vsi *vsi = np->vsi;
8467         struct i40e_pf *pf = vsi->back;
8468         u8 next_idx;
8469         u8 idx;
8470
8471         if (sa_family == AF_INET6)
8472                 return;
8473
8474         idx = i40e_get_vxlan_port_idx(pf, port);
8475
8476         /* Check if port already exists */
8477         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8478                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8479                             ntohs(port));
8480                 return;
8481         }
8482
8483         /* Now check if there is space to add the new port */
8484         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8485
8486         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8487                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8488                             ntohs(port));
8489                 return;
8490         }
8491
8492         /* New port: add it and mark its index in the bitmap */
8493         pf->vxlan_ports[next_idx] = port;
8494         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8495         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8496 }
8497
8498 /**
8499  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8500  * @netdev: This physical port's netdev
8501  * @sa_family: Socket Family that VXLAN is notifying us about
8502  * @port: UDP port number that VXLAN stopped listening to
8503  **/
8504 static void i40e_del_vxlan_port(struct net_device *netdev,
8505                                 sa_family_t sa_family, __be16 port)
8506 {
8507         struct i40e_netdev_priv *np = netdev_priv(netdev);
8508         struct i40e_vsi *vsi = np->vsi;
8509         struct i40e_pf *pf = vsi->back;
8510         u8 idx;
8511
8512         if (sa_family == AF_INET6)
8513                 return;
8514
8515         idx = i40e_get_vxlan_port_idx(pf, port);
8516
8517         /* Check if port already exists */
8518         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8519                 /* if port exists, set it to 0 (mark for deletion)
8520                  * and make it pending
8521                  */
8522                 pf->vxlan_ports[idx] = 0;
8523                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8524                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8525         } else {
8526                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8527                             ntohs(port));
8528         }
8529 }
8530
8531 #endif
8532 static int i40e_get_phys_port_id(struct net_device *netdev,
8533                                  struct netdev_phys_item_id *ppid)
8534 {
8535         struct i40e_netdev_priv *np = netdev_priv(netdev);
8536         struct i40e_pf *pf = np->vsi->back;
8537         struct i40e_hw *hw = &pf->hw;
8538
8539         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8540                 return -EOPNOTSUPP;
8541
8542         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8543         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8544
8545         return 0;
8546 }
8547
8548 /**
8549  * i40e_ndo_fdb_add - add an entry to the hardware database
8550  * @ndm: the input from the stack
8551  * @tb: pointer to array of nladdr (unused)
8552  * @dev: the net device pointer
8553  * @addr: the MAC address entry being added
8554  * @flags: instructions from stack about fdb operation
8555  */
8556 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8557                             struct net_device *dev,
8558                             const unsigned char *addr, u16 vid,
8559                             u16 flags)
8560 {
8561         struct i40e_netdev_priv *np = netdev_priv(dev);
8562         struct i40e_pf *pf = np->vsi->back;
8563         int err = 0;
8564
8565         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8566                 return -EOPNOTSUPP;
8567
8568         if (vid) {
8569                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8570                 return -EINVAL;
8571         }
8572
8573         /* Hardware does not support aging addresses so if a
8574          * ndm_state is given only allow permanent addresses
8575          */
8576         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8577                 netdev_info(dev, "FDB only supports static addresses\n");
8578                 return -EINVAL;
8579         }
8580
8581         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8582                 err = dev_uc_add_excl(dev, addr);
8583         else if (is_multicast_ether_addr(addr))
8584                 err = dev_mc_add_excl(dev, addr);
8585         else
8586                 err = -EINVAL;
8587
8588         /* Only return duplicate errors if NLM_F_EXCL is set */
8589         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8590                 err = 0;
8591
8592         return err;
8593 }
8594
8595 /**
8596  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8597  * @dev: the netdev being configured
8598  * @nlh: RTNL message
8599  *
8600  * Inserts a new hardware bridge if not already created and
8601  * enables the bridging mode requested (VEB or VEPA). If the
8602  * hardware bridge has already been inserted and the request
8603  * is to change the mode then that requires a PF reset to
8604  * allow rebuild of the components with required hardware
8605  * bridge mode enabled.
8606  **/
8607 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8608                                    struct nlmsghdr *nlh,
8609                                    u16 flags)
8610 {
8611         struct i40e_netdev_priv *np = netdev_priv(dev);
8612         struct i40e_vsi *vsi = np->vsi;
8613         struct i40e_pf *pf = vsi->back;
8614         struct i40e_veb *veb = NULL;
8615         struct nlattr *attr, *br_spec;
8616         int i, rem;
8617
8618         /* Only for PF VSI for now */
8619         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8620                 return -EOPNOTSUPP;
8621
8622         /* Find the HW bridge for PF VSI */
8623         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8624                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8625                         veb = pf->veb[i];
8626         }
8627
8628         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8629
8630         nla_for_each_nested(attr, br_spec, rem) {
8631                 __u16 mode;
8632
8633                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8634                         continue;
8635
8636                 mode = nla_get_u16(attr);
8637                 if ((mode != BRIDGE_MODE_VEPA) &&
8638                     (mode != BRIDGE_MODE_VEB))
8639                         return -EINVAL;
8640
8641                 /* Insert a new HW bridge */
8642                 if (!veb) {
8643                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8644                                              vsi->tc_config.enabled_tc);
8645                         if (veb) {
8646                                 veb->bridge_mode = mode;
8647                                 i40e_config_bridge_mode(veb);
8648                         } else {
8649                                 /* No Bridge HW offload available */
8650                                 return -ENOENT;
8651                         }
8652                         break;
8653                 } else if (mode != veb->bridge_mode) {
8654                         /* Existing HW bridge but different mode needs reset */
8655                         veb->bridge_mode = mode;
8656                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8657                         if (mode == BRIDGE_MODE_VEB)
8658                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8659                         else
8660                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8661                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8662                         break;
8663                 }
8664         }
8665
8666         return 0;
8667 }
8668
8669 /**
8670  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8671  * @skb: skb buff
8672  * @pid: process id
8673  * @seq: RTNL message seq #
8674  * @dev: the netdev being configured
8675  * @filter_mask: unused
8676  * @nlflags: netlink flags passed in
8677  *
8678  * Return the mode in which the hardware bridge is operating in
8679  * i.e VEB or VEPA.
8680  **/
8681 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8682                                    struct net_device *dev,
8683                                    u32 __always_unused filter_mask,
8684                                    int nlflags)
8685 {
8686         struct i40e_netdev_priv *np = netdev_priv(dev);
8687         struct i40e_vsi *vsi = np->vsi;
8688         struct i40e_pf *pf = vsi->back;
8689         struct i40e_veb *veb = NULL;
8690         int i;
8691
8692         /* Only for PF VSI for now */
8693         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8694                 return -EOPNOTSUPP;
8695
8696         /* Find the HW bridge for the PF VSI */
8697         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8698                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8699                         veb = pf->veb[i];
8700         }
8701
8702         if (!veb)
8703                 return 0;
8704
8705         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8706                                        nlflags, 0, 0, filter_mask, NULL);
8707 }
8708
8709 #define I40E_MAX_TUNNEL_HDR_LEN 80
8710 /**
8711  * i40e_features_check - Validate encapsulated packet conforms to limits
8712  * @skb: skb buff
8713  * @dev: This physical port's netdev
8714  * @features: Offload features that the stack believes apply
8715  **/
8716 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8717                                              struct net_device *dev,
8718                                              netdev_features_t features)
8719 {
8720         if (skb->encapsulation &&
8721             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8722              I40E_MAX_TUNNEL_HDR_LEN))
8723                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8724
8725         return features;
8726 }
8727
8728 static const struct net_device_ops i40e_netdev_ops = {
8729         .ndo_open               = i40e_open,
8730         .ndo_stop               = i40e_close,
8731         .ndo_start_xmit         = i40e_lan_xmit_frame,
8732         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8733         .ndo_set_rx_mode        = i40e_set_rx_mode,
8734         .ndo_validate_addr      = eth_validate_addr,
8735         .ndo_set_mac_address    = i40e_set_mac,
8736         .ndo_change_mtu         = i40e_change_mtu,
8737         .ndo_do_ioctl           = i40e_ioctl,
8738         .ndo_tx_timeout         = i40e_tx_timeout,
8739         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8740         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8741 #ifdef CONFIG_NET_POLL_CONTROLLER
8742         .ndo_poll_controller    = i40e_netpoll,
8743 #endif
8744         .ndo_setup_tc           = i40e_setup_tc,
8745 #ifdef I40E_FCOE
8746         .ndo_fcoe_enable        = i40e_fcoe_enable,
8747         .ndo_fcoe_disable       = i40e_fcoe_disable,
8748 #endif
8749         .ndo_set_features       = i40e_set_features,
8750         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8751         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8752         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8753         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8754         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8755         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8756 #ifdef CONFIG_I40E_VXLAN
8757         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8758         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8759 #endif
8760         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8761         .ndo_fdb_add            = i40e_ndo_fdb_add,
8762         .ndo_features_check     = i40e_features_check,
8763         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8764         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8765 };
8766
8767 /**
8768  * i40e_config_netdev - Setup the netdev flags
8769  * @vsi: the VSI being configured
8770  *
8771  * Returns 0 on success, negative value on failure
8772  **/
8773 static int i40e_config_netdev(struct i40e_vsi *vsi)
8774 {
8775         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8776         struct i40e_pf *pf = vsi->back;
8777         struct i40e_hw *hw = &pf->hw;
8778         struct i40e_netdev_priv *np;
8779         struct net_device *netdev;
8780         u8 mac_addr[ETH_ALEN];
8781         int etherdev_size;
8782
8783         etherdev_size = sizeof(struct i40e_netdev_priv);
8784         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8785         if (!netdev)
8786                 return -ENOMEM;
8787
8788         vsi->netdev = netdev;
8789         np = netdev_priv(netdev);
8790         np->vsi = vsi;
8791
8792         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8793                                   NETIF_F_GSO_UDP_TUNNEL |
8794                                   NETIF_F_GSO_GRE        |
8795                                   NETIF_F_TSO;
8796
8797         netdev->features = NETIF_F_SG                  |
8798                            NETIF_F_IP_CSUM             |
8799                            NETIF_F_SCTP_CSUM           |
8800                            NETIF_F_HIGHDMA             |
8801                            NETIF_F_GSO_UDP_TUNNEL      |
8802                            NETIF_F_GSO_GRE             |
8803                            NETIF_F_HW_VLAN_CTAG_TX     |
8804                            NETIF_F_HW_VLAN_CTAG_RX     |
8805                            NETIF_F_HW_VLAN_CTAG_FILTER |
8806                            NETIF_F_IPV6_CSUM           |
8807                            NETIF_F_TSO                 |
8808                            NETIF_F_TSO_ECN             |
8809                            NETIF_F_TSO6                |
8810                            NETIF_F_RXCSUM              |
8811                            NETIF_F_RXHASH              |
8812                            0;
8813
8814         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8815                 netdev->features |= NETIF_F_NTUPLE;
8816
8817         /* copy netdev features into list of user selectable features */
8818         netdev->hw_features |= netdev->features;
8819
8820         if (vsi->type == I40E_VSI_MAIN) {
8821                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8822                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8823                 /* The following steps are necessary to prevent reception
8824                  * of tagged packets - some older NVM configurations load a
8825                  * default a MAC-VLAN filter that accepts any tagged packet
8826                  * which must be replaced by a normal filter.
8827                  */
8828                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8829                         spin_lock_bh(&vsi->mac_filter_list_lock);
8830                         i40e_add_filter(vsi, mac_addr,
8831                                         I40E_VLAN_ANY, false, true);
8832                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8833                 }
8834         } else {
8835                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8836                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8837                          pf->vsi[pf->lan_vsi]->netdev->name);
8838                 random_ether_addr(mac_addr);
8839
8840                 spin_lock_bh(&vsi->mac_filter_list_lock);
8841                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8842                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8843         }
8844
8845         spin_lock_bh(&vsi->mac_filter_list_lock);
8846         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8847         spin_unlock_bh(&vsi->mac_filter_list_lock);
8848
8849         ether_addr_copy(netdev->dev_addr, mac_addr);
8850         ether_addr_copy(netdev->perm_addr, mac_addr);
8851         /* vlan gets same features (except vlan offload)
8852          * after any tweaks for specific VSI types
8853          */
8854         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8855                                                      NETIF_F_HW_VLAN_CTAG_RX |
8856                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8857         netdev->priv_flags |= IFF_UNICAST_FLT;
8858         netdev->priv_flags |= IFF_SUPP_NOFCS;
8859         /* Setup netdev TC information */
8860         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8861
8862         netdev->netdev_ops = &i40e_netdev_ops;
8863         netdev->watchdog_timeo = 5 * HZ;
8864         i40e_set_ethtool_ops(netdev);
8865 #ifdef I40E_FCOE
8866         i40e_fcoe_config_netdev(netdev, vsi);
8867 #endif
8868
8869         return 0;
8870 }
8871
8872 /**
8873  * i40e_vsi_delete - Delete a VSI from the switch
8874  * @vsi: the VSI being removed
8875  *
8876  * Returns 0 on success, negative value on failure
8877  **/
8878 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8879 {
8880         /* remove default VSI is not allowed */
8881         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8882                 return;
8883
8884         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8885 }
8886
8887 /**
8888  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8889  * @vsi: the VSI being queried
8890  *
8891  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8892  **/
8893 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8894 {
8895         struct i40e_veb *veb;
8896         struct i40e_pf *pf = vsi->back;
8897
8898         /* Uplink is not a bridge so default to VEB */
8899         if (vsi->veb_idx == I40E_NO_VEB)
8900                 return 1;
8901
8902         veb = pf->veb[vsi->veb_idx];
8903         if (!veb) {
8904                 dev_info(&pf->pdev->dev,
8905                          "There is no veb associated with the bridge\n");
8906                 return -ENOENT;
8907         }
8908
8909         /* Uplink is a bridge in VEPA mode */
8910         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8911                 return 0;
8912         } else {
8913                 /* Uplink is a bridge in VEB mode */
8914                 return 1;
8915         }
8916
8917         /* VEPA is now default bridge, so return 0 */
8918         return 0;
8919 }
8920
8921 /**
8922  * i40e_add_vsi - Add a VSI to the switch
8923  * @vsi: the VSI being configured
8924  *
8925  * This initializes a VSI context depending on the VSI type to be added and
8926  * passes it down to the add_vsi aq command.
8927  **/
8928 static int i40e_add_vsi(struct i40e_vsi *vsi)
8929 {
8930         int ret = -ENODEV;
8931         u8 laa_macaddr[ETH_ALEN];
8932         bool found_laa_mac_filter = false;
8933         struct i40e_pf *pf = vsi->back;
8934         struct i40e_hw *hw = &pf->hw;
8935         struct i40e_vsi_context ctxt;
8936         struct i40e_mac_filter *f, *ftmp;
8937
8938         u8 enabled_tc = 0x1; /* TC0 enabled */
8939         int f_count = 0;
8940
8941         memset(&ctxt, 0, sizeof(ctxt));
8942         switch (vsi->type) {
8943         case I40E_VSI_MAIN:
8944                 /* The PF's main VSI is already setup as part of the
8945                  * device initialization, so we'll not bother with
8946                  * the add_vsi call, but we will retrieve the current
8947                  * VSI context.
8948                  */
8949                 ctxt.seid = pf->main_vsi_seid;
8950                 ctxt.pf_num = pf->hw.pf_id;
8951                 ctxt.vf_num = 0;
8952                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8953                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8954                 if (ret) {
8955                         dev_info(&pf->pdev->dev,
8956                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8957                                  i40e_stat_str(&pf->hw, ret),
8958                                  i40e_aq_str(&pf->hw,
8959                                              pf->hw.aq.asq_last_status));
8960                         return -ENOENT;
8961                 }
8962                 vsi->info = ctxt.info;
8963                 vsi->info.valid_sections = 0;
8964
8965                 vsi->seid = ctxt.seid;
8966                 vsi->id = ctxt.vsi_number;
8967
8968                 enabled_tc = i40e_pf_get_tc_map(pf);
8969
8970                 /* MFP mode setup queue map and update VSI */
8971                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8972                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8973                         memset(&ctxt, 0, sizeof(ctxt));
8974                         ctxt.seid = pf->main_vsi_seid;
8975                         ctxt.pf_num = pf->hw.pf_id;
8976                         ctxt.vf_num = 0;
8977                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8978                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8979                         if (ret) {
8980                                 dev_info(&pf->pdev->dev,
8981                                          "update vsi failed, err %s aq_err %s\n",
8982                                          i40e_stat_str(&pf->hw, ret),
8983                                          i40e_aq_str(&pf->hw,
8984                                                     pf->hw.aq.asq_last_status));
8985                                 ret = -ENOENT;
8986                                 goto err;
8987                         }
8988                         /* update the local VSI info queue map */
8989                         i40e_vsi_update_queue_map(vsi, &ctxt);
8990                         vsi->info.valid_sections = 0;
8991                 } else {
8992                         /* Default/Main VSI is only enabled for TC0
8993                          * reconfigure it to enable all TCs that are
8994                          * available on the port in SFP mode.
8995                          * For MFP case the iSCSI PF would use this
8996                          * flow to enable LAN+iSCSI TC.
8997                          */
8998                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8999                         if (ret) {
9000                                 dev_info(&pf->pdev->dev,
9001                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9002                                          enabled_tc,
9003                                          i40e_stat_str(&pf->hw, ret),
9004                                          i40e_aq_str(&pf->hw,
9005                                                     pf->hw.aq.asq_last_status));
9006                                 ret = -ENOENT;
9007                         }
9008                 }
9009                 break;
9010
9011         case I40E_VSI_FDIR:
9012                 ctxt.pf_num = hw->pf_id;
9013                 ctxt.vf_num = 0;
9014                 ctxt.uplink_seid = vsi->uplink_seid;
9015                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9016                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9017                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9018                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9019                         ctxt.info.valid_sections |=
9020                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9021                         ctxt.info.switch_id =
9022                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9023                 }
9024                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9025                 break;
9026
9027         case I40E_VSI_VMDQ2:
9028                 ctxt.pf_num = hw->pf_id;
9029                 ctxt.vf_num = 0;
9030                 ctxt.uplink_seid = vsi->uplink_seid;
9031                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9032                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9033
9034                 /* This VSI is connected to VEB so the switch_id
9035                  * should be set to zero by default.
9036                  */
9037                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9038                         ctxt.info.valid_sections |=
9039                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9040                         ctxt.info.switch_id =
9041                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9042                 }
9043
9044                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9045                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9046                 break;
9047
9048         case I40E_VSI_SRIOV:
9049                 ctxt.pf_num = hw->pf_id;
9050                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9051                 ctxt.uplink_seid = vsi->uplink_seid;
9052                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9053                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9054
9055                 /* This VSI is connected to VEB so the switch_id
9056                  * should be set to zero by default.
9057                  */
9058                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9059                         ctxt.info.valid_sections |=
9060                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9061                         ctxt.info.switch_id =
9062                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9063                 }
9064
9065                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9066                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9067                 if (pf->vf[vsi->vf_id].spoofchk) {
9068                         ctxt.info.valid_sections |=
9069                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9070                         ctxt.info.sec_flags |=
9071                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9072                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9073                 }
9074                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9075                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9076                 break;
9077
9078 #ifdef I40E_FCOE
9079         case I40E_VSI_FCOE:
9080                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9081                 if (ret) {
9082                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9083                         return ret;
9084                 }
9085                 break;
9086
9087 #endif /* I40E_FCOE */
9088         default:
9089                 return -ENODEV;
9090         }
9091
9092         if (vsi->type != I40E_VSI_MAIN) {
9093                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9094                 if (ret) {
9095                         dev_info(&vsi->back->pdev->dev,
9096                                  "add vsi failed, err %s aq_err %s\n",
9097                                  i40e_stat_str(&pf->hw, ret),
9098                                  i40e_aq_str(&pf->hw,
9099                                              pf->hw.aq.asq_last_status));
9100                         ret = -ENOENT;
9101                         goto err;
9102                 }
9103                 vsi->info = ctxt.info;
9104                 vsi->info.valid_sections = 0;
9105                 vsi->seid = ctxt.seid;
9106                 vsi->id = ctxt.vsi_number;
9107         }
9108
9109         spin_lock_bh(&vsi->mac_filter_list_lock);
9110         /* If macvlan filters already exist, force them to get loaded */
9111         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9112                 f->changed = true;
9113                 f_count++;
9114
9115                 /* Expected to have only one MAC filter entry for LAA in list */
9116                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9117                         ether_addr_copy(laa_macaddr, f->macaddr);
9118                         found_laa_mac_filter = true;
9119                 }
9120         }
9121         spin_unlock_bh(&vsi->mac_filter_list_lock);
9122
9123         if (found_laa_mac_filter) {
9124                 struct i40e_aqc_remove_macvlan_element_data element;
9125
9126                 memset(&element, 0, sizeof(element));
9127                 ether_addr_copy(element.mac_addr, laa_macaddr);
9128                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9129                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9130                                              &element, 1, NULL);
9131                 if (ret) {
9132                         /* some older FW has a different default */
9133                         element.flags |=
9134                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9135                         i40e_aq_remove_macvlan(hw, vsi->seid,
9136                                                &element, 1, NULL);
9137                 }
9138
9139                 i40e_aq_mac_address_write(hw,
9140                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9141                                           laa_macaddr, NULL);
9142         }
9143
9144         if (f_count) {
9145                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9146                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9147         }
9148
9149         /* Update VSI BW information */
9150         ret = i40e_vsi_get_bw_info(vsi);
9151         if (ret) {
9152                 dev_info(&pf->pdev->dev,
9153                          "couldn't get vsi bw info, err %s aq_err %s\n",
9154                          i40e_stat_str(&pf->hw, ret),
9155                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9156                 /* VSI is already added so not tearing that up */
9157                 ret = 0;
9158         }
9159
9160 err:
9161         return ret;
9162 }
9163
9164 /**
9165  * i40e_vsi_release - Delete a VSI and free its resources
9166  * @vsi: the VSI being removed
9167  *
9168  * Returns 0 on success or < 0 on error
9169  **/
9170 int i40e_vsi_release(struct i40e_vsi *vsi)
9171 {
9172         struct i40e_mac_filter *f, *ftmp;
9173         struct i40e_veb *veb = NULL;
9174         struct i40e_pf *pf;
9175         u16 uplink_seid;
9176         int i, n;
9177
9178         pf = vsi->back;
9179
9180         /* release of a VEB-owner or last VSI is not allowed */
9181         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9182                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9183                          vsi->seid, vsi->uplink_seid);
9184                 return -ENODEV;
9185         }
9186         if (vsi == pf->vsi[pf->lan_vsi] &&
9187             !test_bit(__I40E_DOWN, &pf->state)) {
9188                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9189                 return -ENODEV;
9190         }
9191
9192         uplink_seid = vsi->uplink_seid;
9193         if (vsi->type != I40E_VSI_SRIOV) {
9194                 if (vsi->netdev_registered) {
9195                         vsi->netdev_registered = false;
9196                         if (vsi->netdev) {
9197                                 /* results in a call to i40e_close() */
9198                                 unregister_netdev(vsi->netdev);
9199                         }
9200                 } else {
9201                         i40e_vsi_close(vsi);
9202                 }
9203                 i40e_vsi_disable_irq(vsi);
9204         }
9205
9206         spin_lock_bh(&vsi->mac_filter_list_lock);
9207         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9208                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9209                                 f->is_vf, f->is_netdev);
9210         spin_unlock_bh(&vsi->mac_filter_list_lock);
9211
9212         i40e_sync_vsi_filters(vsi);
9213
9214         i40e_vsi_delete(vsi);
9215         i40e_vsi_free_q_vectors(vsi);
9216         if (vsi->netdev) {
9217                 free_netdev(vsi->netdev);
9218                 vsi->netdev = NULL;
9219         }
9220         i40e_vsi_clear_rings(vsi);
9221         i40e_vsi_clear(vsi);
9222
9223         /* If this was the last thing on the VEB, except for the
9224          * controlling VSI, remove the VEB, which puts the controlling
9225          * VSI onto the next level down in the switch.
9226          *
9227          * Well, okay, there's one more exception here: don't remove
9228          * the orphan VEBs yet.  We'll wait for an explicit remove request
9229          * from up the network stack.
9230          */
9231         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9232                 if (pf->vsi[i] &&
9233                     pf->vsi[i]->uplink_seid == uplink_seid &&
9234                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9235                         n++;      /* count the VSIs */
9236                 }
9237         }
9238         for (i = 0; i < I40E_MAX_VEB; i++) {
9239                 if (!pf->veb[i])
9240                         continue;
9241                 if (pf->veb[i]->uplink_seid == uplink_seid)
9242                         n++;     /* count the VEBs */
9243                 if (pf->veb[i]->seid == uplink_seid)
9244                         veb = pf->veb[i];
9245         }
9246         if (n == 0 && veb && veb->uplink_seid != 0)
9247                 i40e_veb_release(veb);
9248
9249         return 0;
9250 }
9251
9252 /**
9253  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9254  * @vsi: ptr to the VSI
9255  *
9256  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9257  * corresponding SW VSI structure and initializes num_queue_pairs for the
9258  * newly allocated VSI.
9259  *
9260  * Returns 0 on success or negative on failure
9261  **/
9262 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9263 {
9264         int ret = -ENOENT;
9265         struct i40e_pf *pf = vsi->back;
9266
9267         if (vsi->q_vectors[0]) {
9268                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9269                          vsi->seid);
9270                 return -EEXIST;
9271         }
9272
9273         if (vsi->base_vector) {
9274                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9275                          vsi->seid, vsi->base_vector);
9276                 return -EEXIST;
9277         }
9278
9279         ret = i40e_vsi_alloc_q_vectors(vsi);
9280         if (ret) {
9281                 dev_info(&pf->pdev->dev,
9282                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9283                          vsi->num_q_vectors, vsi->seid, ret);
9284                 vsi->num_q_vectors = 0;
9285                 goto vector_setup_out;
9286         }
9287
9288         /* In Legacy mode, we do not have to get any other vector since we
9289          * piggyback on the misc/ICR0 for queue interrupts.
9290         */
9291         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9292                 return ret;
9293         if (vsi->num_q_vectors)
9294                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9295                                                  vsi->num_q_vectors, vsi->idx);
9296         if (vsi->base_vector < 0) {
9297                 dev_info(&pf->pdev->dev,
9298                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9299                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9300                 i40e_vsi_free_q_vectors(vsi);
9301                 ret = -ENOENT;
9302                 goto vector_setup_out;
9303         }
9304
9305 vector_setup_out:
9306         return ret;
9307 }
9308
9309 /**
9310  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9311  * @vsi: pointer to the vsi.
9312  *
9313  * This re-allocates a vsi's queue resources.
9314  *
9315  * Returns pointer to the successfully allocated and configured VSI sw struct
9316  * on success, otherwise returns NULL on failure.
9317  **/
9318 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9319 {
9320         struct i40e_pf *pf = vsi->back;
9321         u8 enabled_tc;
9322         int ret;
9323
9324         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9325         i40e_vsi_clear_rings(vsi);
9326
9327         i40e_vsi_free_arrays(vsi, false);
9328         i40e_set_num_rings_in_vsi(vsi);
9329         ret = i40e_vsi_alloc_arrays(vsi, false);
9330         if (ret)
9331                 goto err_vsi;
9332
9333         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9334         if (ret < 0) {
9335                 dev_info(&pf->pdev->dev,
9336                          "failed to get tracking for %d queues for VSI %d err %d\n",
9337                          vsi->alloc_queue_pairs, vsi->seid, ret);
9338                 goto err_vsi;
9339         }
9340         vsi->base_queue = ret;
9341
9342         /* Update the FW view of the VSI. Force a reset of TC and queue
9343          * layout configurations.
9344          */
9345         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9346         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9347         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9348         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9349
9350         /* assign it some queues */
9351         ret = i40e_alloc_rings(vsi);
9352         if (ret)
9353                 goto err_rings;
9354
9355         /* map all of the rings to the q_vectors */
9356         i40e_vsi_map_rings_to_vectors(vsi);
9357         return vsi;
9358
9359 err_rings:
9360         i40e_vsi_free_q_vectors(vsi);
9361         if (vsi->netdev_registered) {
9362                 vsi->netdev_registered = false;
9363                 unregister_netdev(vsi->netdev);
9364                 free_netdev(vsi->netdev);
9365                 vsi->netdev = NULL;
9366         }
9367         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9368 err_vsi:
9369         i40e_vsi_clear(vsi);
9370         return NULL;
9371 }
9372
9373 /**
9374  * i40e_vsi_setup - Set up a VSI by a given type
9375  * @pf: board private structure
9376  * @type: VSI type
9377  * @uplink_seid: the switch element to link to
9378  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9379  *
9380  * This allocates the sw VSI structure and its queue resources, then add a VSI
9381  * to the identified VEB.
9382  *
9383  * Returns pointer to the successfully allocated and configure VSI sw struct on
9384  * success, otherwise returns NULL on failure.
9385  **/
9386 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9387                                 u16 uplink_seid, u32 param1)
9388 {
9389         struct i40e_vsi *vsi = NULL;
9390         struct i40e_veb *veb = NULL;
9391         int ret, i;
9392         int v_idx;
9393
9394         /* The requested uplink_seid must be either
9395          *     - the PF's port seid
9396          *              no VEB is needed because this is the PF
9397          *              or this is a Flow Director special case VSI
9398          *     - seid of an existing VEB
9399          *     - seid of a VSI that owns an existing VEB
9400          *     - seid of a VSI that doesn't own a VEB
9401          *              a new VEB is created and the VSI becomes the owner
9402          *     - seid of the PF VSI, which is what creates the first VEB
9403          *              this is a special case of the previous
9404          *
9405          * Find which uplink_seid we were given and create a new VEB if needed
9406          */
9407         for (i = 0; i < I40E_MAX_VEB; i++) {
9408                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9409                         veb = pf->veb[i];
9410                         break;
9411                 }
9412         }
9413
9414         if (!veb && uplink_seid != pf->mac_seid) {
9415
9416                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9417                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9418                                 vsi = pf->vsi[i];
9419                                 break;
9420                         }
9421                 }
9422                 if (!vsi) {
9423                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9424                                  uplink_seid);
9425                         return NULL;
9426                 }
9427
9428                 if (vsi->uplink_seid == pf->mac_seid)
9429                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9430                                              vsi->tc_config.enabled_tc);
9431                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9432                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9433                                              vsi->tc_config.enabled_tc);
9434                 if (veb) {
9435                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9436                                 dev_info(&vsi->back->pdev->dev,
9437                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9438                                 return NULL;
9439                         }
9440                         /* We come up by default in VEPA mode if SRIOV is not
9441                          * already enabled, in which case we can't force VEPA
9442                          * mode.
9443                          */
9444                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9445                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9446                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9447                         }
9448                         i40e_config_bridge_mode(veb);
9449                 }
9450                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9451                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9452                                 veb = pf->veb[i];
9453                 }
9454                 if (!veb) {
9455                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9456                         return NULL;
9457                 }
9458
9459                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9460                 uplink_seid = veb->seid;
9461         }
9462
9463         /* get vsi sw struct */
9464         v_idx = i40e_vsi_mem_alloc(pf, type);
9465         if (v_idx < 0)
9466                 goto err_alloc;
9467         vsi = pf->vsi[v_idx];
9468         if (!vsi)
9469                 goto err_alloc;
9470         vsi->type = type;
9471         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9472
9473         if (type == I40E_VSI_MAIN)
9474                 pf->lan_vsi = v_idx;
9475         else if (type == I40E_VSI_SRIOV)
9476                 vsi->vf_id = param1;
9477         /* assign it some queues */
9478         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9479                                 vsi->idx);
9480         if (ret < 0) {
9481                 dev_info(&pf->pdev->dev,
9482                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9483                          vsi->alloc_queue_pairs, vsi->seid, ret);
9484                 goto err_vsi;
9485         }
9486         vsi->base_queue = ret;
9487
9488         /* get a VSI from the hardware */
9489         vsi->uplink_seid = uplink_seid;
9490         ret = i40e_add_vsi(vsi);
9491         if (ret)
9492                 goto err_vsi;
9493
9494         switch (vsi->type) {
9495         /* setup the netdev if needed */
9496         case I40E_VSI_MAIN:
9497         case I40E_VSI_VMDQ2:
9498         case I40E_VSI_FCOE:
9499                 ret = i40e_config_netdev(vsi);
9500                 if (ret)
9501                         goto err_netdev;
9502                 ret = register_netdev(vsi->netdev);
9503                 if (ret)
9504                         goto err_netdev;
9505                 vsi->netdev_registered = true;
9506                 netif_carrier_off(vsi->netdev);
9507 #ifdef CONFIG_I40E_DCB
9508                 /* Setup DCB netlink interface */
9509                 i40e_dcbnl_setup(vsi);
9510 #endif /* CONFIG_I40E_DCB */
9511                 /* fall through */
9512
9513         case I40E_VSI_FDIR:
9514                 /* set up vectors and rings if needed */
9515                 ret = i40e_vsi_setup_vectors(vsi);
9516                 if (ret)
9517                         goto err_msix;
9518
9519                 ret = i40e_alloc_rings(vsi);
9520                 if (ret)
9521                         goto err_rings;
9522
9523                 /* map all of the rings to the q_vectors */
9524                 i40e_vsi_map_rings_to_vectors(vsi);
9525
9526                 i40e_vsi_reset_stats(vsi);
9527                 break;
9528
9529         default:
9530                 /* no netdev or rings for the other VSI types */
9531                 break;
9532         }
9533
9534         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9535             (vsi->type == I40E_VSI_VMDQ2)) {
9536                 ret = i40e_vsi_config_rss(vsi);
9537         }
9538         return vsi;
9539
9540 err_rings:
9541         i40e_vsi_free_q_vectors(vsi);
9542 err_msix:
9543         if (vsi->netdev_registered) {
9544                 vsi->netdev_registered = false;
9545                 unregister_netdev(vsi->netdev);
9546                 free_netdev(vsi->netdev);
9547                 vsi->netdev = NULL;
9548         }
9549 err_netdev:
9550         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9551 err_vsi:
9552         i40e_vsi_clear(vsi);
9553 err_alloc:
9554         return NULL;
9555 }
9556
9557 /**
9558  * i40e_veb_get_bw_info - Query VEB BW information
9559  * @veb: the veb to query
9560  *
9561  * Query the Tx scheduler BW configuration data for given VEB
9562  **/
9563 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9564 {
9565         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9566         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9567         struct i40e_pf *pf = veb->pf;
9568         struct i40e_hw *hw = &pf->hw;
9569         u32 tc_bw_max;
9570         int ret = 0;
9571         int i;
9572
9573         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9574                                                   &bw_data, NULL);
9575         if (ret) {
9576                 dev_info(&pf->pdev->dev,
9577                          "query veb bw config failed, err %s aq_err %s\n",
9578                          i40e_stat_str(&pf->hw, ret),
9579                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9580                 goto out;
9581         }
9582
9583         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9584                                                    &ets_data, NULL);
9585         if (ret) {
9586                 dev_info(&pf->pdev->dev,
9587                          "query veb bw ets config failed, err %s aq_err %s\n",
9588                          i40e_stat_str(&pf->hw, ret),
9589                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9590                 goto out;
9591         }
9592
9593         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9594         veb->bw_max_quanta = ets_data.tc_bw_max;
9595         veb->is_abs_credits = bw_data.absolute_credits_enable;
9596         veb->enabled_tc = ets_data.tc_valid_bits;
9597         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9598                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9599         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9600                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9601                 veb->bw_tc_limit_credits[i] =
9602                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9603                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9604         }
9605
9606 out:
9607         return ret;
9608 }
9609
9610 /**
9611  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9612  * @pf: board private structure
9613  *
9614  * On error: returns error code (negative)
9615  * On success: returns vsi index in PF (positive)
9616  **/
9617 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9618 {
9619         int ret = -ENOENT;
9620         struct i40e_veb *veb;
9621         int i;
9622
9623         /* Need to protect the allocation of switch elements at the PF level */
9624         mutex_lock(&pf->switch_mutex);
9625
9626         /* VEB list may be fragmented if VEB creation/destruction has
9627          * been happening.  We can afford to do a quick scan to look
9628          * for any free slots in the list.
9629          *
9630          * find next empty veb slot, looping back around if necessary
9631          */
9632         i = 0;
9633         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9634                 i++;
9635         if (i >= I40E_MAX_VEB) {
9636                 ret = -ENOMEM;
9637                 goto err_alloc_veb;  /* out of VEB slots! */
9638         }
9639
9640         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9641         if (!veb) {
9642                 ret = -ENOMEM;
9643                 goto err_alloc_veb;
9644         }
9645         veb->pf = pf;
9646         veb->idx = i;
9647         veb->enabled_tc = 1;
9648
9649         pf->veb[i] = veb;
9650         ret = i;
9651 err_alloc_veb:
9652         mutex_unlock(&pf->switch_mutex);
9653         return ret;
9654 }
9655
9656 /**
9657  * i40e_switch_branch_release - Delete a branch of the switch tree
9658  * @branch: where to start deleting
9659  *
9660  * This uses recursion to find the tips of the branch to be
9661  * removed, deleting until we get back to and can delete this VEB.
9662  **/
9663 static void i40e_switch_branch_release(struct i40e_veb *branch)
9664 {
9665         struct i40e_pf *pf = branch->pf;
9666         u16 branch_seid = branch->seid;
9667         u16 veb_idx = branch->idx;
9668         int i;
9669
9670         /* release any VEBs on this VEB - RECURSION */
9671         for (i = 0; i < I40E_MAX_VEB; i++) {
9672                 if (!pf->veb[i])
9673                         continue;
9674                 if (pf->veb[i]->uplink_seid == branch->seid)
9675                         i40e_switch_branch_release(pf->veb[i]);
9676         }
9677
9678         /* Release the VSIs on this VEB, but not the owner VSI.
9679          *
9680          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9681          *       the VEB itself, so don't use (*branch) after this loop.
9682          */
9683         for (i = 0; i < pf->num_alloc_vsi; i++) {
9684                 if (!pf->vsi[i])
9685                         continue;
9686                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9687                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9688                         i40e_vsi_release(pf->vsi[i]);
9689                 }
9690         }
9691
9692         /* There's one corner case where the VEB might not have been
9693          * removed, so double check it here and remove it if needed.
9694          * This case happens if the veb was created from the debugfs
9695          * commands and no VSIs were added to it.
9696          */
9697         if (pf->veb[veb_idx])
9698                 i40e_veb_release(pf->veb[veb_idx]);
9699 }
9700
9701 /**
9702  * i40e_veb_clear - remove veb struct
9703  * @veb: the veb to remove
9704  **/
9705 static void i40e_veb_clear(struct i40e_veb *veb)
9706 {
9707         if (!veb)
9708                 return;
9709
9710         if (veb->pf) {
9711                 struct i40e_pf *pf = veb->pf;
9712
9713                 mutex_lock(&pf->switch_mutex);
9714                 if (pf->veb[veb->idx] == veb)
9715                         pf->veb[veb->idx] = NULL;
9716                 mutex_unlock(&pf->switch_mutex);
9717         }
9718
9719         kfree(veb);
9720 }
9721
9722 /**
9723  * i40e_veb_release - Delete a VEB and free its resources
9724  * @veb: the VEB being removed
9725  **/
9726 void i40e_veb_release(struct i40e_veb *veb)
9727 {
9728         struct i40e_vsi *vsi = NULL;
9729         struct i40e_pf *pf;
9730         int i, n = 0;
9731
9732         pf = veb->pf;
9733
9734         /* find the remaining VSI and check for extras */
9735         for (i = 0; i < pf->num_alloc_vsi; i++) {
9736                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9737                         n++;
9738                         vsi = pf->vsi[i];
9739                 }
9740         }
9741         if (n != 1) {
9742                 dev_info(&pf->pdev->dev,
9743                          "can't remove VEB %d with %d VSIs left\n",
9744                          veb->seid, n);
9745                 return;
9746         }
9747
9748         /* move the remaining VSI to uplink veb */
9749         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9750         if (veb->uplink_seid) {
9751                 vsi->uplink_seid = veb->uplink_seid;
9752                 if (veb->uplink_seid == pf->mac_seid)
9753                         vsi->veb_idx = I40E_NO_VEB;
9754                 else
9755                         vsi->veb_idx = veb->veb_idx;
9756         } else {
9757                 /* floating VEB */
9758                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9759                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9760         }
9761
9762         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9763         i40e_veb_clear(veb);
9764 }
9765
9766 /**
9767  * i40e_add_veb - create the VEB in the switch
9768  * @veb: the VEB to be instantiated
9769  * @vsi: the controlling VSI
9770  **/
9771 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9772 {
9773         struct i40e_pf *pf = veb->pf;
9774         bool is_default = veb->pf->cur_promisc;
9775         bool is_cloud = false;
9776         int ret;
9777
9778         /* get a VEB from the hardware */
9779         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9780                               veb->enabled_tc, is_default,
9781                               is_cloud, &veb->seid, NULL);
9782         if (ret) {
9783                 dev_info(&pf->pdev->dev,
9784                          "couldn't add VEB, err %s aq_err %s\n",
9785                          i40e_stat_str(&pf->hw, ret),
9786                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9787                 return -EPERM;
9788         }
9789
9790         /* get statistics counter */
9791         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9792                                          &veb->stats_idx, NULL, NULL, NULL);
9793         if (ret) {
9794                 dev_info(&pf->pdev->dev,
9795                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9796                          i40e_stat_str(&pf->hw, ret),
9797                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9798                 return -EPERM;
9799         }
9800         ret = i40e_veb_get_bw_info(veb);
9801         if (ret) {
9802                 dev_info(&pf->pdev->dev,
9803                          "couldn't get VEB bw info, err %s aq_err %s\n",
9804                          i40e_stat_str(&pf->hw, ret),
9805                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9806                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9807                 return -ENOENT;
9808         }
9809
9810         vsi->uplink_seid = veb->seid;
9811         vsi->veb_idx = veb->idx;
9812         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9813
9814         return 0;
9815 }
9816
9817 /**
9818  * i40e_veb_setup - Set up a VEB
9819  * @pf: board private structure
9820  * @flags: VEB setup flags
9821  * @uplink_seid: the switch element to link to
9822  * @vsi_seid: the initial VSI seid
9823  * @enabled_tc: Enabled TC bit-map
9824  *
9825  * This allocates the sw VEB structure and links it into the switch
9826  * It is possible and legal for this to be a duplicate of an already
9827  * existing VEB.  It is also possible for both uplink and vsi seids
9828  * to be zero, in order to create a floating VEB.
9829  *
9830  * Returns pointer to the successfully allocated VEB sw struct on
9831  * success, otherwise returns NULL on failure.
9832  **/
9833 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9834                                 u16 uplink_seid, u16 vsi_seid,
9835                                 u8 enabled_tc)
9836 {
9837         struct i40e_veb *veb, *uplink_veb = NULL;
9838         int vsi_idx, veb_idx;
9839         int ret;
9840
9841         /* if one seid is 0, the other must be 0 to create a floating relay */
9842         if ((uplink_seid == 0 || vsi_seid == 0) &&
9843             (uplink_seid + vsi_seid != 0)) {
9844                 dev_info(&pf->pdev->dev,
9845                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9846                          uplink_seid, vsi_seid);
9847                 return NULL;
9848         }
9849
9850         /* make sure there is such a vsi and uplink */
9851         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9852                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9853                         break;
9854         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9855                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9856                          vsi_seid);
9857                 return NULL;
9858         }
9859
9860         if (uplink_seid && uplink_seid != pf->mac_seid) {
9861                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9862                         if (pf->veb[veb_idx] &&
9863                             pf->veb[veb_idx]->seid == uplink_seid) {
9864                                 uplink_veb = pf->veb[veb_idx];
9865                                 break;
9866                         }
9867                 }
9868                 if (!uplink_veb) {
9869                         dev_info(&pf->pdev->dev,
9870                                  "uplink seid %d not found\n", uplink_seid);
9871                         return NULL;
9872                 }
9873         }
9874
9875         /* get veb sw struct */
9876         veb_idx = i40e_veb_mem_alloc(pf);
9877         if (veb_idx < 0)
9878                 goto err_alloc;
9879         veb = pf->veb[veb_idx];
9880         veb->flags = flags;
9881         veb->uplink_seid = uplink_seid;
9882         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9883         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9884
9885         /* create the VEB in the switch */
9886         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9887         if (ret)
9888                 goto err_veb;
9889         if (vsi_idx == pf->lan_vsi)
9890                 pf->lan_veb = veb->idx;
9891
9892         return veb;
9893
9894 err_veb:
9895         i40e_veb_clear(veb);
9896 err_alloc:
9897         return NULL;
9898 }
9899
9900 /**
9901  * i40e_setup_pf_switch_element - set PF vars based on switch type
9902  * @pf: board private structure
9903  * @ele: element we are building info from
9904  * @num_reported: total number of elements
9905  * @printconfig: should we print the contents
9906  *
9907  * helper function to assist in extracting a few useful SEID values.
9908  **/
9909 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9910                                 struct i40e_aqc_switch_config_element_resp *ele,
9911                                 u16 num_reported, bool printconfig)
9912 {
9913         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9914         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9915         u8 element_type = ele->element_type;
9916         u16 seid = le16_to_cpu(ele->seid);
9917
9918         if (printconfig)
9919                 dev_info(&pf->pdev->dev,
9920                          "type=%d seid=%d uplink=%d downlink=%d\n",
9921                          element_type, seid, uplink_seid, downlink_seid);
9922
9923         switch (element_type) {
9924         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9925                 pf->mac_seid = seid;
9926                 break;
9927         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9928                 /* Main VEB? */
9929                 if (uplink_seid != pf->mac_seid)
9930                         break;
9931                 if (pf->lan_veb == I40E_NO_VEB) {
9932                         int v;
9933
9934                         /* find existing or else empty VEB */
9935                         for (v = 0; v < I40E_MAX_VEB; v++) {
9936                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9937                                         pf->lan_veb = v;
9938                                         break;
9939                                 }
9940                         }
9941                         if (pf->lan_veb == I40E_NO_VEB) {
9942                                 v = i40e_veb_mem_alloc(pf);
9943                                 if (v < 0)
9944                                         break;
9945                                 pf->lan_veb = v;
9946                         }
9947                 }
9948
9949                 pf->veb[pf->lan_veb]->seid = seid;
9950                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9951                 pf->veb[pf->lan_veb]->pf = pf;
9952                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9953                 break;
9954         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9955                 if (num_reported != 1)
9956                         break;
9957                 /* This is immediately after a reset so we can assume this is
9958                  * the PF's VSI
9959                  */
9960                 pf->mac_seid = uplink_seid;
9961                 pf->pf_seid = downlink_seid;
9962                 pf->main_vsi_seid = seid;
9963                 if (printconfig)
9964                         dev_info(&pf->pdev->dev,
9965                                  "pf_seid=%d main_vsi_seid=%d\n",
9966                                  pf->pf_seid, pf->main_vsi_seid);
9967                 break;
9968         case I40E_SWITCH_ELEMENT_TYPE_PF:
9969         case I40E_SWITCH_ELEMENT_TYPE_VF:
9970         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9971         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9972         case I40E_SWITCH_ELEMENT_TYPE_PE:
9973         case I40E_SWITCH_ELEMENT_TYPE_PA:
9974                 /* ignore these for now */
9975                 break;
9976         default:
9977                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9978                          element_type, seid);
9979                 break;
9980         }
9981 }
9982
9983 /**
9984  * i40e_fetch_switch_configuration - Get switch config from firmware
9985  * @pf: board private structure
9986  * @printconfig: should we print the contents
9987  *
9988  * Get the current switch configuration from the device and
9989  * extract a few useful SEID values.
9990  **/
9991 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9992 {
9993         struct i40e_aqc_get_switch_config_resp *sw_config;
9994         u16 next_seid = 0;
9995         int ret = 0;
9996         u8 *aq_buf;
9997         int i;
9998
9999         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10000         if (!aq_buf)
10001                 return -ENOMEM;
10002
10003         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10004         do {
10005                 u16 num_reported, num_total;
10006
10007                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10008                                                 I40E_AQ_LARGE_BUF,
10009                                                 &next_seid, NULL);
10010                 if (ret) {
10011                         dev_info(&pf->pdev->dev,
10012                                  "get switch config failed err %s aq_err %s\n",
10013                                  i40e_stat_str(&pf->hw, ret),
10014                                  i40e_aq_str(&pf->hw,
10015                                              pf->hw.aq.asq_last_status));
10016                         kfree(aq_buf);
10017                         return -ENOENT;
10018                 }
10019
10020                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10021                 num_total = le16_to_cpu(sw_config->header.num_total);
10022
10023                 if (printconfig)
10024                         dev_info(&pf->pdev->dev,
10025                                  "header: %d reported %d total\n",
10026                                  num_reported, num_total);
10027
10028                 for (i = 0; i < num_reported; i++) {
10029                         struct i40e_aqc_switch_config_element_resp *ele =
10030                                 &sw_config->element[i];
10031
10032                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10033                                                      printconfig);
10034                 }
10035         } while (next_seid != 0);
10036
10037         kfree(aq_buf);
10038         return ret;
10039 }
10040
10041 /**
10042  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10043  * @pf: board private structure
10044  * @reinit: if the Main VSI needs to re-initialized.
10045  *
10046  * Returns 0 on success, negative value on failure
10047  **/
10048 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10049 {
10050         int ret;
10051
10052         /* find out what's out there already */
10053         ret = i40e_fetch_switch_configuration(pf, false);
10054         if (ret) {
10055                 dev_info(&pf->pdev->dev,
10056                          "couldn't fetch switch config, err %s aq_err %s\n",
10057                          i40e_stat_str(&pf->hw, ret),
10058                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10059                 return ret;
10060         }
10061         i40e_pf_reset_stats(pf);
10062
10063         /* first time setup */
10064         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10065                 struct i40e_vsi *vsi = NULL;
10066                 u16 uplink_seid;
10067
10068                 /* Set up the PF VSI associated with the PF's main VSI
10069                  * that is already in the HW switch
10070                  */
10071                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10072                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10073                 else
10074                         uplink_seid = pf->mac_seid;
10075                 if (pf->lan_vsi == I40E_NO_VSI)
10076                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10077                 else if (reinit)
10078                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10079                 if (!vsi) {
10080                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10081                         i40e_fdir_teardown(pf);
10082                         return -EAGAIN;
10083                 }
10084         } else {
10085                 /* force a reset of TC and queue layout configurations */
10086                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10087
10088                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10089                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10090                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10091         }
10092         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10093
10094         i40e_fdir_sb_setup(pf);
10095
10096         /* Setup static PF queue filter control settings */
10097         ret = i40e_setup_pf_filter_control(pf);
10098         if (ret) {
10099                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10100                          ret);
10101                 /* Failure here should not stop continuing other steps */
10102         }
10103
10104         /* enable RSS in the HW, even for only one queue, as the stack can use
10105          * the hash
10106          */
10107         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10108                 i40e_pf_config_rss(pf);
10109
10110         /* fill in link information and enable LSE reporting */
10111         i40e_update_link_info(&pf->hw);
10112         i40e_link_event(pf);
10113
10114         /* Initialize user-specific link properties */
10115         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10116                                   I40E_AQ_AN_COMPLETED) ? true : false);
10117
10118         i40e_ptp_init(pf);
10119
10120         return ret;
10121 }
10122
10123 /**
10124  * i40e_determine_queue_usage - Work out queue distribution
10125  * @pf: board private structure
10126  **/
10127 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10128 {
10129         int queues_left;
10130
10131         pf->num_lan_qps = 0;
10132 #ifdef I40E_FCOE
10133         pf->num_fcoe_qps = 0;
10134 #endif
10135
10136         /* Find the max queues to be put into basic use.  We'll always be
10137          * using TC0, whether or not DCB is running, and TC0 will get the
10138          * big RSS set.
10139          */
10140         queues_left = pf->hw.func_caps.num_tx_qp;
10141
10142         if ((queues_left == 1) ||
10143             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10144                 /* one qp for PF, no queues for anything else */
10145                 queues_left = 0;
10146                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10147
10148                 /* make sure all the fancies are disabled */
10149                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10150 #ifdef I40E_FCOE
10151                                I40E_FLAG_FCOE_ENABLED   |
10152 #endif
10153                                I40E_FLAG_FD_SB_ENABLED  |
10154                                I40E_FLAG_FD_ATR_ENABLED |
10155                                I40E_FLAG_DCB_CAPABLE    |
10156                                I40E_FLAG_SRIOV_ENABLED  |
10157                                I40E_FLAG_VMDQ_ENABLED);
10158         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10159                                   I40E_FLAG_FD_SB_ENABLED |
10160                                   I40E_FLAG_FD_ATR_ENABLED |
10161                                   I40E_FLAG_DCB_CAPABLE))) {
10162                 /* one qp for PF */
10163                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10164                 queues_left -= pf->num_lan_qps;
10165
10166                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10167 #ifdef I40E_FCOE
10168                                I40E_FLAG_FCOE_ENABLED   |
10169 #endif
10170                                I40E_FLAG_FD_SB_ENABLED  |
10171                                I40E_FLAG_FD_ATR_ENABLED |
10172                                I40E_FLAG_DCB_ENABLED    |
10173                                I40E_FLAG_VMDQ_ENABLED);
10174         } else {
10175                 /* Not enough queues for all TCs */
10176                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10177                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10178                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10179                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10180                 }
10181                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10182                                         num_online_cpus());
10183                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10184                                         pf->hw.func_caps.num_tx_qp);
10185
10186                 queues_left -= pf->num_lan_qps;
10187         }
10188
10189 #ifdef I40E_FCOE
10190         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10191                 if (I40E_DEFAULT_FCOE <= queues_left) {
10192                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10193                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10194                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10195                 } else {
10196                         pf->num_fcoe_qps = 0;
10197                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10198                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10199                 }
10200
10201                 queues_left -= pf->num_fcoe_qps;
10202         }
10203
10204 #endif
10205         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10206                 if (queues_left > 1) {
10207                         queues_left -= 1; /* save 1 queue for FD */
10208                 } else {
10209                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10210                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10211                 }
10212         }
10213
10214         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10215             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10216                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10217                                         (queues_left / pf->num_vf_qps));
10218                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10219         }
10220
10221         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10222             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10223                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10224                                           (queues_left / pf->num_vmdq_qps));
10225                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10226         }
10227
10228         pf->queues_left = queues_left;
10229         dev_dbg(&pf->pdev->dev,
10230                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10231                 pf->hw.func_caps.num_tx_qp,
10232                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10233                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10234                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10235                 queues_left);
10236 #ifdef I40E_FCOE
10237         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10238 #endif
10239 }
10240
10241 /**
10242  * i40e_setup_pf_filter_control - Setup PF static filter control
10243  * @pf: PF to be setup
10244  *
10245  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10246  * settings. If PE/FCoE are enabled then it will also set the per PF
10247  * based filter sizes required for them. It also enables Flow director,
10248  * ethertype and macvlan type filter settings for the pf.
10249  *
10250  * Returns 0 on success, negative on failure
10251  **/
10252 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10253 {
10254         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10255
10256         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10257
10258         /* Flow Director is enabled */
10259         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10260                 settings->enable_fdir = true;
10261
10262         /* Ethtype and MACVLAN filters enabled for PF */
10263         settings->enable_ethtype = true;
10264         settings->enable_macvlan = true;
10265
10266         if (i40e_set_filter_control(&pf->hw, settings))
10267                 return -ENOENT;
10268
10269         return 0;
10270 }
10271
10272 #define INFO_STRING_LEN 255
10273 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10274 static void i40e_print_features(struct i40e_pf *pf)
10275 {
10276         struct i40e_hw *hw = &pf->hw;
10277         char *buf;
10278         int i;
10279
10280         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10281         if (!buf)
10282                 return;
10283
10284         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10285 #ifdef CONFIG_PCI_IOV
10286         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10287 #endif
10288         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10289                       pf->hw.func_caps.num_vsis,
10290                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10291                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10292
10293         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10294                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10295         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10296                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10297         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10298                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10299                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10300         }
10301         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10302                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10303 #if IS_ENABLED(CONFIG_VXLAN)
10304         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10305 #endif
10306         if (pf->flags & I40E_FLAG_PTP)
10307                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10308 #ifdef I40E_FCOE
10309         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10310                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10311 #endif
10312         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10313                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10314         else
10315                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10316
10317         dev_info(&pf->pdev->dev, "%s\n", buf);
10318         kfree(buf);
10319         WARN_ON(i > INFO_STRING_LEN);
10320 }
10321
10322 /**
10323  * i40e_probe - Device initialization routine
10324  * @pdev: PCI device information struct
10325  * @ent: entry in i40e_pci_tbl
10326  *
10327  * i40e_probe initializes a PF identified by a pci_dev structure.
10328  * The OS initialization, configuring of the PF private structure,
10329  * and a hardware reset occur.
10330  *
10331  * Returns 0 on success, negative on failure
10332  **/
10333 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10334 {
10335         struct i40e_aq_get_phy_abilities_resp abilities;
10336         struct i40e_pf *pf;
10337         struct i40e_hw *hw;
10338         static u16 pfs_found;
10339         u16 wol_nvm_bits;
10340         u16 link_status;
10341         int err;
10342         u32 len;
10343         u32 val;
10344         u32 i;
10345         u8 set_fc_aq_fail;
10346
10347         err = pci_enable_device_mem(pdev);
10348         if (err)
10349                 return err;
10350
10351         /* set up for high or low dma */
10352         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10353         if (err) {
10354                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10355                 if (err) {
10356                         dev_err(&pdev->dev,
10357                                 "DMA configuration failed: 0x%x\n", err);
10358                         goto err_dma;
10359                 }
10360         }
10361
10362         /* set up pci connections */
10363         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10364                                            IORESOURCE_MEM), i40e_driver_name);
10365         if (err) {
10366                 dev_info(&pdev->dev,
10367                          "pci_request_selected_regions failed %d\n", err);
10368                 goto err_pci_reg;
10369         }
10370
10371         pci_enable_pcie_error_reporting(pdev);
10372         pci_set_master(pdev);
10373
10374         /* Now that we have a PCI connection, we need to do the
10375          * low level device setup.  This is primarily setting up
10376          * the Admin Queue structures and then querying for the
10377          * device's current profile information.
10378          */
10379         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10380         if (!pf) {
10381                 err = -ENOMEM;
10382                 goto err_pf_alloc;
10383         }
10384         pf->next_vsi = 0;
10385         pf->pdev = pdev;
10386         set_bit(__I40E_DOWN, &pf->state);
10387
10388         hw = &pf->hw;
10389         hw->back = pf;
10390
10391         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10392                                 I40E_MAX_CSR_SPACE);
10393
10394         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10395         if (!hw->hw_addr) {
10396                 err = -EIO;
10397                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10398                          (unsigned int)pci_resource_start(pdev, 0),
10399                          pf->ioremap_len, err);
10400                 goto err_ioremap;
10401         }
10402         hw->vendor_id = pdev->vendor;
10403         hw->device_id = pdev->device;
10404         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10405         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10406         hw->subsystem_device_id = pdev->subsystem_device;
10407         hw->bus.device = PCI_SLOT(pdev->devfn);
10408         hw->bus.func = PCI_FUNC(pdev->devfn);
10409         pf->instance = pfs_found;
10410
10411         if (debug != -1) {
10412                 pf->msg_enable = pf->hw.debug_mask;
10413                 pf->msg_enable = debug;
10414         }
10415
10416         /* do a special CORER for clearing PXE mode once at init */
10417         if (hw->revision_id == 0 &&
10418             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10419                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10420                 i40e_flush(hw);
10421                 msleep(200);
10422                 pf->corer_count++;
10423
10424                 i40e_clear_pxe_mode(hw);
10425         }
10426
10427         /* Reset here to make sure all is clean and to define PF 'n' */
10428         i40e_clear_hw(hw);
10429         err = i40e_pf_reset(hw);
10430         if (err) {
10431                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10432                 goto err_pf_reset;
10433         }
10434         pf->pfr_count++;
10435
10436         hw->aq.num_arq_entries = I40E_AQ_LEN;
10437         hw->aq.num_asq_entries = I40E_AQ_LEN;
10438         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10439         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10440         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10441
10442         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10443                  "%s-%s:misc",
10444                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10445
10446         err = i40e_init_shared_code(hw);
10447         if (err) {
10448                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10449                          err);
10450                 goto err_pf_reset;
10451         }
10452
10453         /* set up a default setting for link flow control */
10454         pf->hw.fc.requested_mode = I40E_FC_NONE;
10455
10456         err = i40e_init_adminq(hw);
10457         if (err) {
10458                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10459                         dev_info(&pdev->dev,
10460                                  "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");
10461                 else
10462                         dev_info(&pdev->dev,
10463                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10464
10465                 goto err_pf_reset;
10466         }
10467
10468         /* provide nvm, fw, api versions */
10469         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10470                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10471                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10472                  i40e_nvm_version_str(hw));
10473
10474         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10475             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10476                 dev_info(&pdev->dev,
10477                          "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");
10478         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10479                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10480                 dev_info(&pdev->dev,
10481                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10482
10483         i40e_verify_eeprom(pf);
10484
10485         /* Rev 0 hardware was never productized */
10486         if (hw->revision_id < 1)
10487                 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");
10488
10489         i40e_clear_pxe_mode(hw);
10490         err = i40e_get_capabilities(pf);
10491         if (err)
10492                 goto err_adminq_setup;
10493
10494         err = i40e_sw_init(pf);
10495         if (err) {
10496                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10497                 goto err_sw_init;
10498         }
10499
10500         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10501                                 hw->func_caps.num_rx_qp,
10502                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10503         if (err) {
10504                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10505                 goto err_init_lan_hmc;
10506         }
10507
10508         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10509         if (err) {
10510                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10511                 err = -ENOENT;
10512                 goto err_configure_lan_hmc;
10513         }
10514
10515         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10516          * Ignore error return codes because if it was already disabled via
10517          * hardware settings this will fail
10518          */
10519         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10520             (pf->hw.aq.fw_maj_ver < 4)) {
10521                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10522                 i40e_aq_stop_lldp(hw, true, NULL);
10523         }
10524
10525         i40e_get_mac_addr(hw, hw->mac.addr);
10526         if (!is_valid_ether_addr(hw->mac.addr)) {
10527                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10528                 err = -EIO;
10529                 goto err_mac_addr;
10530         }
10531         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10532         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10533         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10534         if (is_valid_ether_addr(hw->mac.port_addr))
10535                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10536 #ifdef I40E_FCOE
10537         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10538         if (err)
10539                 dev_info(&pdev->dev,
10540                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10541         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10542                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10543                          hw->mac.san_addr);
10544                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10545         }
10546         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10547 #endif /* I40E_FCOE */
10548
10549         pci_set_drvdata(pdev, pf);
10550         pci_save_state(pdev);
10551 #ifdef CONFIG_I40E_DCB
10552         err = i40e_init_pf_dcb(pf);
10553         if (err) {
10554                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10555                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10556                 /* Continue without DCB enabled */
10557         }
10558 #endif /* CONFIG_I40E_DCB */
10559
10560         /* set up periodic task facility */
10561         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10562         pf->service_timer_period = HZ;
10563
10564         INIT_WORK(&pf->service_task, i40e_service_task);
10565         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10566         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10567
10568         /* NVM bit on means WoL disabled for the port */
10569         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10570         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10571                 pf->wol_en = false;
10572         else
10573                 pf->wol_en = true;
10574         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10575
10576         /* set up the main switch operations */
10577         i40e_determine_queue_usage(pf);
10578         err = i40e_init_interrupt_scheme(pf);
10579         if (err)
10580                 goto err_switch_setup;
10581
10582         /* The number of VSIs reported by the FW is the minimum guaranteed
10583          * to us; HW supports far more and we share the remaining pool with
10584          * the other PFs. We allocate space for more than the guarantee with
10585          * the understanding that we might not get them all later.
10586          */
10587         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10588                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10589         else
10590                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10591
10592         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10593         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10594         pf->vsi = kzalloc(len, GFP_KERNEL);
10595         if (!pf->vsi) {
10596                 err = -ENOMEM;
10597                 goto err_switch_setup;
10598         }
10599
10600 #ifdef CONFIG_PCI_IOV
10601         /* prep for VF support */
10602         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10603             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10604             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10605                 if (pci_num_vf(pdev))
10606                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10607         }
10608 #endif
10609         err = i40e_setup_pf_switch(pf, false);
10610         if (err) {
10611                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10612                 goto err_vsis;
10613         }
10614
10615         /* Make sure flow control is set according to current settings */
10616         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10617         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10618                 dev_dbg(&pf->pdev->dev,
10619                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10620                         i40e_stat_str(hw, err),
10621                         i40e_aq_str(hw, hw->aq.asq_last_status));
10622         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10623                 dev_dbg(&pf->pdev->dev,
10624                         "Set fc with err %s aq_err %s on set_phy_config\n",
10625                         i40e_stat_str(hw, err),
10626                         i40e_aq_str(hw, hw->aq.asq_last_status));
10627         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10628                 dev_dbg(&pf->pdev->dev,
10629                         "Set fc with err %s aq_err %s on get_link_info\n",
10630                         i40e_stat_str(hw, err),
10631                         i40e_aq_str(hw, hw->aq.asq_last_status));
10632
10633         /* if FDIR VSI was set up, start it now */
10634         for (i = 0; i < pf->num_alloc_vsi; i++) {
10635                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10636                         i40e_vsi_open(pf->vsi[i]);
10637                         break;
10638                 }
10639         }
10640
10641         /* driver is only interested in link up/down and module qualification
10642          * reports from firmware
10643          */
10644         err = i40e_aq_set_phy_int_mask(&pf->hw,
10645                                        I40E_AQ_EVENT_LINK_UPDOWN |
10646                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10647         if (err)
10648                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10649                          i40e_stat_str(&pf->hw, err),
10650                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10651
10652         /* Reconfigure hardware for allowing smaller MSS in the case
10653          * of TSO, so that we avoid the MDD being fired and causing
10654          * a reset in the case of small MSS+TSO.
10655          */
10656         val = rd32(hw, I40E_REG_MSS);
10657         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10658                 val &= ~I40E_REG_MSS_MIN_MASK;
10659                 val |= I40E_64BYTE_MSS;
10660                 wr32(hw, I40E_REG_MSS, val);
10661         }
10662
10663         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10664             (pf->hw.aq.fw_maj_ver < 4)) {
10665                 msleep(75);
10666                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10667                 if (err)
10668                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10669                                  i40e_stat_str(&pf->hw, err),
10670                                  i40e_aq_str(&pf->hw,
10671                                              pf->hw.aq.asq_last_status));
10672         }
10673         /* The main driver is (mostly) up and happy. We need to set this state
10674          * before setting up the misc vector or we get a race and the vector
10675          * ends up disabled forever.
10676          */
10677         clear_bit(__I40E_DOWN, &pf->state);
10678
10679         /* In case of MSIX we are going to setup the misc vector right here
10680          * to handle admin queue events etc. In case of legacy and MSI
10681          * the misc functionality and queue processing is combined in
10682          * the same vector and that gets setup at open.
10683          */
10684         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10685                 err = i40e_setup_misc_vector(pf);
10686                 if (err) {
10687                         dev_info(&pdev->dev,
10688                                  "setup of misc vector failed: %d\n", err);
10689                         goto err_vsis;
10690                 }
10691         }
10692
10693 #ifdef CONFIG_PCI_IOV
10694         /* prep for VF support */
10695         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10696             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10697             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10698                 u32 val;
10699
10700                 /* disable link interrupts for VFs */
10701                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10702                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10703                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10704                 i40e_flush(hw);
10705
10706                 if (pci_num_vf(pdev)) {
10707                         dev_info(&pdev->dev,
10708                                  "Active VFs found, allocating resources.\n");
10709                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10710                         if (err)
10711                                 dev_info(&pdev->dev,
10712                                          "Error %d allocating resources for existing VFs\n",
10713                                          err);
10714                 }
10715         }
10716 #endif /* CONFIG_PCI_IOV */
10717
10718         pfs_found++;
10719
10720         i40e_dbg_pf_init(pf);
10721
10722         /* tell the firmware that we're starting */
10723         i40e_send_version(pf);
10724
10725         /* since everything's happy, start the service_task timer */
10726         mod_timer(&pf->service_timer,
10727                   round_jiffies(jiffies + pf->service_timer_period));
10728
10729 #ifdef I40E_FCOE
10730         /* create FCoE interface */
10731         i40e_fcoe_vsi_setup(pf);
10732
10733 #endif
10734 #define PCI_SPEED_SIZE 8
10735 #define PCI_WIDTH_SIZE 8
10736         /* Devices on the IOSF bus do not have this information
10737          * and will report PCI Gen 1 x 1 by default so don't bother
10738          * checking them.
10739          */
10740         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10741                 char speed[PCI_SPEED_SIZE] = "Unknown";
10742                 char width[PCI_WIDTH_SIZE] = "Unknown";
10743
10744                 /* Get the negotiated link width and speed from PCI config
10745                  * space
10746                  */
10747                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10748                                           &link_status);
10749
10750                 i40e_set_pci_config_data(hw, link_status);
10751
10752                 switch (hw->bus.speed) {
10753                 case i40e_bus_speed_8000:
10754                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10755                 case i40e_bus_speed_5000:
10756                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10757                 case i40e_bus_speed_2500:
10758                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10759                 default:
10760                         break;
10761                 }
10762                 switch (hw->bus.width) {
10763                 case i40e_bus_width_pcie_x8:
10764                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10765                 case i40e_bus_width_pcie_x4:
10766                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10767                 case i40e_bus_width_pcie_x2:
10768                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10769                 case i40e_bus_width_pcie_x1:
10770                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10771                 default:
10772                         break;
10773                 }
10774
10775                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10776                          speed, width);
10777
10778                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10779                     hw->bus.speed < i40e_bus_speed_8000) {
10780                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10781                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10782                 }
10783         }
10784
10785         /* get the requested speeds from the fw */
10786         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10787         if (err)
10788                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10789                         i40e_stat_str(&pf->hw, err),
10790                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10791         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10792
10793         /* get the supported phy types from the fw */
10794         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10795         if (err)
10796                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10797                         i40e_stat_str(&pf->hw, err),
10798                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10799         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10800
10801         /* Add a filter to drop all Flow control frames from any VSI from being
10802          * transmitted. By doing so we stop a malicious VF from sending out
10803          * PAUSE or PFC frames and potentially controlling traffic for other
10804          * PF/VF VSIs.
10805          * The FW can still send Flow control frames if enabled.
10806          */
10807         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10808                                                        pf->main_vsi_seid);
10809
10810         /* print a string summarizing features */
10811         i40e_print_features(pf);
10812
10813         return 0;
10814
10815         /* Unwind what we've done if something failed in the setup */
10816 err_vsis:
10817         set_bit(__I40E_DOWN, &pf->state);
10818         i40e_clear_interrupt_scheme(pf);
10819         kfree(pf->vsi);
10820 err_switch_setup:
10821         i40e_reset_interrupt_capability(pf);
10822         del_timer_sync(&pf->service_timer);
10823 err_mac_addr:
10824 err_configure_lan_hmc:
10825         (void)i40e_shutdown_lan_hmc(hw);
10826 err_init_lan_hmc:
10827         kfree(pf->qp_pile);
10828 err_sw_init:
10829 err_adminq_setup:
10830         (void)i40e_shutdown_adminq(hw);
10831 err_pf_reset:
10832         iounmap(hw->hw_addr);
10833 err_ioremap:
10834         kfree(pf);
10835 err_pf_alloc:
10836         pci_disable_pcie_error_reporting(pdev);
10837         pci_release_selected_regions(pdev,
10838                                      pci_select_bars(pdev, IORESOURCE_MEM));
10839 err_pci_reg:
10840 err_dma:
10841         pci_disable_device(pdev);
10842         return err;
10843 }
10844
10845 /**
10846  * i40e_remove - Device removal routine
10847  * @pdev: PCI device information struct
10848  *
10849  * i40e_remove is called by the PCI subsystem to alert the driver
10850  * that is should release a PCI device.  This could be caused by a
10851  * Hot-Plug event, or because the driver is going to be removed from
10852  * memory.
10853  **/
10854 static void i40e_remove(struct pci_dev *pdev)
10855 {
10856         struct i40e_pf *pf = pci_get_drvdata(pdev);
10857         struct i40e_hw *hw = &pf->hw;
10858         i40e_status ret_code;
10859         int i;
10860
10861         i40e_dbg_pf_exit(pf);
10862
10863         i40e_ptp_stop(pf);
10864
10865         /* Disable RSS in hw */
10866         wr32(hw, I40E_PFQF_HENA(0), 0);
10867         wr32(hw, I40E_PFQF_HENA(1), 0);
10868
10869         /* no more scheduling of any task */
10870         set_bit(__I40E_DOWN, &pf->state);
10871         del_timer_sync(&pf->service_timer);
10872         cancel_work_sync(&pf->service_task);
10873         i40e_fdir_teardown(pf);
10874
10875         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10876                 i40e_free_vfs(pf);
10877                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10878         }
10879
10880         i40e_fdir_teardown(pf);
10881
10882         /* If there is a switch structure or any orphans, remove them.
10883          * This will leave only the PF's VSI remaining.
10884          */
10885         for (i = 0; i < I40E_MAX_VEB; i++) {
10886                 if (!pf->veb[i])
10887                         continue;
10888
10889                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10890                     pf->veb[i]->uplink_seid == 0)
10891                         i40e_switch_branch_release(pf->veb[i]);
10892         }
10893
10894         /* Now we can shutdown the PF's VSI, just before we kill
10895          * adminq and hmc.
10896          */
10897         if (pf->vsi[pf->lan_vsi])
10898                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10899
10900         /* shutdown and destroy the HMC */
10901         if (pf->hw.hmc.hmc_obj) {
10902                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10903                 if (ret_code)
10904                         dev_warn(&pdev->dev,
10905                                  "Failed to destroy the HMC resources: %d\n",
10906                                  ret_code);
10907         }
10908
10909         /* shutdown the adminq */
10910         ret_code = i40e_shutdown_adminq(&pf->hw);
10911         if (ret_code)
10912                 dev_warn(&pdev->dev,
10913                          "Failed to destroy the Admin Queue resources: %d\n",
10914                          ret_code);
10915
10916         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10917         i40e_clear_interrupt_scheme(pf);
10918         for (i = 0; i < pf->num_alloc_vsi; i++) {
10919                 if (pf->vsi[i]) {
10920                         i40e_vsi_clear_rings(pf->vsi[i]);
10921                         i40e_vsi_clear(pf->vsi[i]);
10922                         pf->vsi[i] = NULL;
10923                 }
10924         }
10925
10926         for (i = 0; i < I40E_MAX_VEB; i++) {
10927                 kfree(pf->veb[i]);
10928                 pf->veb[i] = NULL;
10929         }
10930
10931         kfree(pf->qp_pile);
10932         kfree(pf->vsi);
10933
10934         iounmap(pf->hw.hw_addr);
10935         kfree(pf);
10936         pci_release_selected_regions(pdev,
10937                                      pci_select_bars(pdev, IORESOURCE_MEM));
10938
10939         pci_disable_pcie_error_reporting(pdev);
10940         pci_disable_device(pdev);
10941 }
10942
10943 /**
10944  * i40e_pci_error_detected - warning that something funky happened in PCI land
10945  * @pdev: PCI device information struct
10946  *
10947  * Called to warn that something happened and the error handling steps
10948  * are in progress.  Allows the driver to quiesce things, be ready for
10949  * remediation.
10950  **/
10951 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10952                                                 enum pci_channel_state error)
10953 {
10954         struct i40e_pf *pf = pci_get_drvdata(pdev);
10955
10956         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10957
10958         /* shutdown all operations */
10959         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10960                 rtnl_lock();
10961                 i40e_prep_for_reset(pf);
10962                 rtnl_unlock();
10963         }
10964
10965         /* Request a slot reset */
10966         return PCI_ERS_RESULT_NEED_RESET;
10967 }
10968
10969 /**
10970  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10971  * @pdev: PCI device information struct
10972  *
10973  * Called to find if the driver can work with the device now that
10974  * the pci slot has been reset.  If a basic connection seems good
10975  * (registers are readable and have sane content) then return a
10976  * happy little PCI_ERS_RESULT_xxx.
10977  **/
10978 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10979 {
10980         struct i40e_pf *pf = pci_get_drvdata(pdev);
10981         pci_ers_result_t result;
10982         int err;
10983         u32 reg;
10984
10985         dev_dbg(&pdev->dev, "%s\n", __func__);
10986         if (pci_enable_device_mem(pdev)) {
10987                 dev_info(&pdev->dev,
10988                          "Cannot re-enable PCI device after reset.\n");
10989                 result = PCI_ERS_RESULT_DISCONNECT;
10990         } else {
10991                 pci_set_master(pdev);
10992                 pci_restore_state(pdev);
10993                 pci_save_state(pdev);
10994                 pci_wake_from_d3(pdev, false);
10995
10996                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10997                 if (reg == 0)
10998                         result = PCI_ERS_RESULT_RECOVERED;
10999                 else
11000                         result = PCI_ERS_RESULT_DISCONNECT;
11001         }
11002
11003         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11004         if (err) {
11005                 dev_info(&pdev->dev,
11006                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11007                          err);
11008                 /* non-fatal, continue */
11009         }
11010
11011         return result;
11012 }
11013
11014 /**
11015  * i40e_pci_error_resume - restart operations after PCI error recovery
11016  * @pdev: PCI device information struct
11017  *
11018  * Called to allow the driver to bring things back up after PCI error
11019  * and/or reset recovery has finished.
11020  **/
11021 static void i40e_pci_error_resume(struct pci_dev *pdev)
11022 {
11023         struct i40e_pf *pf = pci_get_drvdata(pdev);
11024
11025         dev_dbg(&pdev->dev, "%s\n", __func__);
11026         if (test_bit(__I40E_SUSPENDED, &pf->state))
11027                 return;
11028
11029         rtnl_lock();
11030         i40e_handle_reset_warning(pf);
11031         rtnl_unlock();
11032 }
11033
11034 /**
11035  * i40e_shutdown - PCI callback for shutting down
11036  * @pdev: PCI device information struct
11037  **/
11038 static void i40e_shutdown(struct pci_dev *pdev)
11039 {
11040         struct i40e_pf *pf = pci_get_drvdata(pdev);
11041         struct i40e_hw *hw = &pf->hw;
11042
11043         set_bit(__I40E_SUSPENDED, &pf->state);
11044         set_bit(__I40E_DOWN, &pf->state);
11045         rtnl_lock();
11046         i40e_prep_for_reset(pf);
11047         rtnl_unlock();
11048
11049         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11050         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11051
11052         del_timer_sync(&pf->service_timer);
11053         cancel_work_sync(&pf->service_task);
11054         i40e_fdir_teardown(pf);
11055
11056         rtnl_lock();
11057         i40e_prep_for_reset(pf);
11058         rtnl_unlock();
11059
11060         wr32(hw, I40E_PFPM_APM,
11061              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11062         wr32(hw, I40E_PFPM_WUFC,
11063              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11064
11065         i40e_clear_interrupt_scheme(pf);
11066
11067         if (system_state == SYSTEM_POWER_OFF) {
11068                 pci_wake_from_d3(pdev, pf->wol_en);
11069                 pci_set_power_state(pdev, PCI_D3hot);
11070         }
11071 }
11072
11073 #ifdef CONFIG_PM
11074 /**
11075  * i40e_suspend - PCI callback for moving to D3
11076  * @pdev: PCI device information struct
11077  **/
11078 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11079 {
11080         struct i40e_pf *pf = pci_get_drvdata(pdev);
11081         struct i40e_hw *hw = &pf->hw;
11082
11083         set_bit(__I40E_SUSPENDED, &pf->state);
11084         set_bit(__I40E_DOWN, &pf->state);
11085
11086         rtnl_lock();
11087         i40e_prep_for_reset(pf);
11088         rtnl_unlock();
11089
11090         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11091         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11092
11093         pci_wake_from_d3(pdev, pf->wol_en);
11094         pci_set_power_state(pdev, PCI_D3hot);
11095
11096         return 0;
11097 }
11098
11099 /**
11100  * i40e_resume - PCI callback for waking up from D3
11101  * @pdev: PCI device information struct
11102  **/
11103 static int i40e_resume(struct pci_dev *pdev)
11104 {
11105         struct i40e_pf *pf = pci_get_drvdata(pdev);
11106         u32 err;
11107
11108         pci_set_power_state(pdev, PCI_D0);
11109         pci_restore_state(pdev);
11110         /* pci_restore_state() clears dev->state_saves, so
11111          * call pci_save_state() again to restore it.
11112          */
11113         pci_save_state(pdev);
11114
11115         err = pci_enable_device_mem(pdev);
11116         if (err) {
11117                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11118                 return err;
11119         }
11120         pci_set_master(pdev);
11121
11122         /* no wakeup events while running */
11123         pci_wake_from_d3(pdev, false);
11124
11125         /* handling the reset will rebuild the device state */
11126         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11127                 clear_bit(__I40E_DOWN, &pf->state);
11128                 rtnl_lock();
11129                 i40e_reset_and_rebuild(pf, false);
11130                 rtnl_unlock();
11131         }
11132
11133         return 0;
11134 }
11135
11136 #endif
11137 static const struct pci_error_handlers i40e_err_handler = {
11138         .error_detected = i40e_pci_error_detected,
11139         .slot_reset = i40e_pci_error_slot_reset,
11140         .resume = i40e_pci_error_resume,
11141 };
11142
11143 static struct pci_driver i40e_driver = {
11144         .name     = i40e_driver_name,
11145         .id_table = i40e_pci_tbl,
11146         .probe    = i40e_probe,
11147         .remove   = i40e_remove,
11148 #ifdef CONFIG_PM
11149         .suspend  = i40e_suspend,
11150         .resume   = i40e_resume,
11151 #endif
11152         .shutdown = i40e_shutdown,
11153         .err_handler = &i40e_err_handler,
11154         .sriov_configure = i40e_pci_sriov_configure,
11155 };
11156
11157 /**
11158  * i40e_init_module - Driver registration routine
11159  *
11160  * i40e_init_module is the first routine called when the driver is
11161  * loaded. All it does is register with the PCI subsystem.
11162  **/
11163 static int __init i40e_init_module(void)
11164 {
11165         pr_info("%s: %s - version %s\n", i40e_driver_name,
11166                 i40e_driver_string, i40e_driver_version_str);
11167         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11168
11169         i40e_dbg_init();
11170         return pci_register_driver(&i40e_driver);
11171 }
11172 module_init(i40e_init_module);
11173
11174 /**
11175  * i40e_exit_module - Driver exit cleanup routine
11176  *
11177  * i40e_exit_module is called just before the driver is removed
11178  * from memory.
11179  **/
11180 static void __exit i40e_exit_module(void)
11181 {
11182         pci_unregister_driver(&i40e_driver);
11183         i40e_dbg_exit();
11184 }
11185 module_exit(i40e_exit_module);