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 3
  42 #define DRV_VERSION_BUILD 46
  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_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  85         /* required last entry */
  86         {0, }
  87 };
  88 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  89
  90 #define I40E_MAX_VF_COUNT 128
  91 static int debug = -1;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  94
  95 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  96 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  97 MODULE_LICENSE("GPL");
  98 MODULE_VERSION(DRV_VERSION);
  99
 100 /**
 101  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 102  * @hw:   pointer to the HW structure
 103  * @mem:  ptr to mem struct to fill out
 104  * @size: size of memory requested
 105  * @alignment: what to align the allocation to
 106  **/
 107 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 108                             u64 size, u32 alignment)
 109 {
 110         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 111
 112         mem->size = ALIGN(size, alignment);
 113         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 114                                       &mem->pa, GFP_KERNEL);
 115         if (!mem->va)
 116                 return -ENOMEM;
 117
 118         return 0;
 119 }
 120
 121 /**
 122  * i40e_free_dma_mem_d - OS specific memory free for shared code
 123  * @hw:   pointer to the HW structure
 124  * @mem:  ptr to mem struct to free
 125  **/
 126 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 127 {
 128         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 129
 130         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 131         mem->va = NULL;
 132         mem->pa = 0;
 133         mem->size = 0;
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 140  * @hw:   pointer to the HW structure
 141  * @mem:  ptr to mem struct to fill out
 142  * @size: size of memory requested
 143  **/
 144 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 145                              u32 size)
 146 {
 147         mem->size = size;
 148         mem->va = kzalloc(size, GFP_KERNEL);
 149
 150         if (!mem->va)
 151                 return -ENOMEM;
 152
 153         return 0;
 154 }
 155
 156 /**
 157  * i40e_free_virt_mem_d - OS specific memory free for shared code
 158  * @hw:   pointer to the HW structure
 159  * @mem:  ptr to mem struct to free
 160  **/
 161 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 162 {
 163         /* it's ok to kfree a NULL pointer */
 164         kfree(mem->va);
 165         mem->va = NULL;
 166         mem->size = 0;
 167
 168         return 0;
 169 }
 170
 171 /**
 172  * i40e_get_lump - find a lump of free generic resource
 173  * @pf: board private structure
 174  * @pile: the pile of resource to search
 175  * @needed: the number of items needed
 176  * @id: an owner id to stick on the items assigned
 177  *
 178  * Returns the base item index of the lump, or negative for error
 179  *
 180  * The search_hint trick and lack of advanced fit-finding only work
 181  * because we're highly likely to have all the same size lump requests.
 182  * Linear search time and any fragmentation should be minimal.
 183  **/
 184 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 185                          u16 needed, u16 id)
 186 {
 187         int ret = -ENOMEM;
 188         int i, j;
 189
 190         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 191                 dev_info(&pf->pdev->dev,
 192                          "param err: pile=%p needed=%d id=0x%04x\n",
 193                          pile, needed, id);
 194                 return -EINVAL;
 195         }
 196
 197         /* start the linear search with an imperfect hint */
 198         i = pile->search_hint;
 199         while (i < pile->num_entries) {
 200                 /* skip already allocated entries */
 201                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 202                         i++;
 203                         continue;
 204                 }
 205
 206                 /* do we have enough in this lump? */
 207                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 208                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 209                                 break;
 210                 }
 211
 212                 if (j == needed) {
 213                         /* there was enough, so assign it to the requestor */
 214                         for (j = 0; j < needed; j++)
 215                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 216                         ret = i;
 217                         pile->search_hint = i + j;
 218                         break;
 219                 }
 220
 221                 /* not enough, so skip over it and continue looking */
 222                 i += j;
 223         }
 224
 225         return ret;
 226 }
 227
 228 /**
 229  * i40e_put_lump - return a lump of generic resource
 230  * @pile: the pile of resource to search
 231  * @index: the base item index
 232  * @id: the owner id of the items assigned
 233  *
 234  * Returns the count of items in the lump
 235  **/
 236 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 237 {
 238         int valid_id = (id | I40E_PILE_VALID_BIT);
 239         int count = 0;
 240         int i;
 241
 242         if (!pile || index >= pile->num_entries)
 243                 return -EINVAL;
 244
 245         for (i = index;
 246              i < pile->num_entries && pile->list[i] == valid_id;
 247              i++) {
 248                 pile->list[i] = 0;
 249                 count++;
 250         }
 251
 252         if (count && index < pile->search_hint)
 253                 pile->search_hint = index;
 254
 255         return count;
 256 }
 257
 258 /**
 259  * i40e_find_vsi_from_id - searches for the vsi with the given id
 260  * @pf - the pf structure to search for the vsi
 261  * @id - id of the vsi it is searching for
 262  **/
 263 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 264 {
 265         int i;
 266
 267         for (i = 0; i < pf->num_alloc_vsi; i++)
 268                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 269                         return pf->vsi[i];
 270
 271         return NULL;
 272 }
 273
 274 /**
 275  * i40e_service_event_schedule - Schedule the service task to wake up
 276  * @pf: board private structure
 277  *
 278  * If not already scheduled, this puts the task into the work queue
 279  **/
 280 static void i40e_service_event_schedule(struct i40e_pf *pf)
 281 {
 282         if (!test_bit(__I40E_DOWN, &pf->state) &&
 283             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 284             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 285                 schedule_work(&pf->service_task);
 286 }
 287
 288 /**
 289  * i40e_tx_timeout - Respond to a Tx Hang
 290  * @netdev: network interface device structure
 291  *
 292  * If any port has noticed a Tx timeout, it is likely that the whole
 293  * device is munged, not just the one netdev port, so go for the full
 294  * reset.
 295  **/
 296 #ifdef I40E_FCOE
 297 void i40e_tx_timeout(struct net_device *netdev)
 298 #else
 299 static void i40e_tx_timeout(struct net_device *netdev)
 300 #endif
 301 {
 302         struct i40e_netdev_priv *np = netdev_priv(netdev);
 303         struct i40e_vsi *vsi = np->vsi;
 304         struct i40e_pf *pf = vsi->back;
 305         struct i40e_ring *tx_ring = NULL;
 306         unsigned int i, hung_queue = 0;
 307         u32 head, val;
 308
 309         pf->tx_timeout_count++;
 310
 311         /* find the stopped queue the same way the stack does */
 312         for (i = 0; i < netdev->num_tx_queues; i++) {
 313                 struct netdev_queue *q;
 314                 unsigned long trans_start;
 315
 316                 q = netdev_get_tx_queue(netdev, i);
 317                 trans_start = q->trans_start ? : netdev->trans_start;
 318                 if (netif_xmit_stopped(q) &&
 319                     time_after(jiffies,
 320                                (trans_start + netdev->watchdog_timeo))) {
 321                         hung_queue = i;
 322                         break;
 323                 }
 324         }
 325
 326         if (i == netdev->num_tx_queues) {
 327                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 328         } else {
 329                 /* now that we have an index, find the tx_ring struct */
 330                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 331                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 332                                 if (hung_queue ==
 333                                     vsi->tx_rings[i]->queue_index) {
 334                                         tx_ring = vsi->tx_rings[i];
 335                                         break;
 336                                 }
 337                         }
 338                 }
 339         }
 340
 341         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 342                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 343         else if (time_before(jiffies,
 344                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 345                 return;   /* don't do any new action before the next timeout */
 346
 347         if (tx_ring) {
 348                 head = i40e_get_head(tx_ring);
 349                 /* Read interrupt register */
 350                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 351                         val = rd32(&pf->hw,
 352                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 353                                                 tx_ring->vsi->base_vector - 1));
 354                 else
 355                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 356
 357                 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",
 358                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 359                             head, tx_ring->next_to_use,
 360                             readl(tx_ring->tail), val);
 361         }
 362
 363         pf->tx_timeout_last_recovery = jiffies;
 364         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 365                     pf->tx_timeout_recovery_level, hung_queue);
 366
 367         switch (pf->tx_timeout_recovery_level) {
 368         case 1:
 369                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 370                 break;
 371         case 2:
 372                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 373                 break;
 374         case 3:
 375                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 376                 break;
 377         default:
 378                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 379                 break;
 380         }
 381
 382         i40e_service_event_schedule(pf);
 383         pf->tx_timeout_recovery_level++;
 384 }
 385
 386 /**
 387  * i40e_release_rx_desc - Store the new tail and head values
 388  * @rx_ring: ring to bump
 389  * @val: new head index
 390  **/
 391 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 392 {
 393         rx_ring->next_to_use = val;
 394
 395         /* Force memory writes to complete before letting h/w
 396          * know there are new descriptors to fetch.  (Only
 397          * applicable for weak-ordered memory model archs,
 398          * such as IA-64).
 399          */
 400         wmb();
 401         writel(val, rx_ring->tail);
 402 }
 403
 404 /**
 405  * i40e_get_vsi_stats_struct - Get System Network Statistics
 406  * @vsi: the VSI we care about
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 412 {
 413         return &vsi->net_stats;
 414 }
 415
 416 /**
 417  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 418  * @netdev: network interface device structure
 419  *
 420  * Returns the address of the device statistics structure.
 421  * The statistics are actually updated from the service task.
 422  **/
 423 #ifdef I40E_FCOE
 424 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 425                                              struct net_device *netdev,
 426                                              struct rtnl_link_stats64 *stats)
 427 #else
 428 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 429                                              struct net_device *netdev,
 430                                              struct rtnl_link_stats64 *stats)
 431 #endif
 432 {
 433         struct i40e_netdev_priv *np = netdev_priv(netdev);
 434         struct i40e_ring *tx_ring, *rx_ring;
 435         struct i40e_vsi *vsi = np->vsi;
 436         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 437         int i;
 438
 439         if (test_bit(__I40E_DOWN, &vsi->state))
 440                 return stats;
 441
 442         if (!vsi->tx_rings)
 443                 return stats;
 444
 445         rcu_read_lock();
 446         for (i = 0; i < vsi->num_queue_pairs; i++) {
 447                 u64 bytes, packets;
 448                 unsigned int start;
 449
 450                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 451                 if (!tx_ring)
 452                         continue;
 453
 454                 do {
 455                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 456                         packets = tx_ring->stats.packets;
 457                         bytes   = tx_ring->stats.bytes;
 458                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 459
 460                 stats->tx_packets += packets;
 461                 stats->tx_bytes   += bytes;
 462                 rx_ring = &tx_ring[1];
 463
 464                 do {
 465                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 466                         packets = rx_ring->stats.packets;
 467                         bytes   = rx_ring->stats.bytes;
 468                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 469
 470                 stats->rx_packets += packets;
 471                 stats->rx_bytes   += bytes;
 472         }
 473         rcu_read_unlock();
 474
 475         /* following stats updated by i40e_watchdog_subtask() */
 476         stats->multicast        = vsi_stats->multicast;
 477         stats->tx_errors        = vsi_stats->tx_errors;
 478         stats->tx_dropped       = vsi_stats->tx_dropped;
 479         stats->rx_errors        = vsi_stats->rx_errors;
 480         stats->rx_dropped       = vsi_stats->rx_dropped;
 481         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 482         stats->rx_length_errors = vsi_stats->rx_length_errors;
 483
 484         return stats;
 485 }
 486
 487 /**
 488  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 489  * @vsi: the VSI to have its stats reset
 490  **/
 491 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 492 {
 493         struct rtnl_link_stats64 *ns;
 494         int i;
 495
 496         if (!vsi)
 497                 return;
 498
 499         ns = i40e_get_vsi_stats_struct(vsi);
 500         memset(ns, 0, sizeof(*ns));
 501         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 502         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 503         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 504         if (vsi->rx_rings && vsi->rx_rings[0]) {
 505                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 506                         memset(&vsi->rx_rings[i]->stats, 0,
 507                                sizeof(vsi->rx_rings[i]->stats));
 508                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 509                                sizeof(vsi->rx_rings[i]->rx_stats));
 510                         memset(&vsi->tx_rings[i]->stats, 0,
 511                                sizeof(vsi->tx_rings[i]->stats));
 512                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 513                                sizeof(vsi->tx_rings[i]->tx_stats));
 514                 }
 515         }
 516         vsi->stat_offsets_loaded = false;
 517 }
 518
 519 /**
 520  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 521  * @pf: the PF to be reset
 522  **/
 523 void i40e_pf_reset_stats(struct i40e_pf *pf)
 524 {
 525         int i;
 526
 527         memset(&pf->stats, 0, sizeof(pf->stats));
 528         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 529         pf->stat_offsets_loaded = false;
 530
 531         for (i = 0; i < I40E_MAX_VEB; i++) {
 532                 if (pf->veb[i]) {
 533                         memset(&pf->veb[i]->stats, 0,
 534                                sizeof(pf->veb[i]->stats));
 535                         memset(&pf->veb[i]->stats_offsets, 0,
 536                                sizeof(pf->veb[i]->stats_offsets));
 537                         pf->veb[i]->stat_offsets_loaded = false;
 538                 }
 539         }
 540 }
 541
 542 /**
 543  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 544  * @hw: ptr to the hardware info
 545  * @hireg: the high 32 bit reg to read
 546  * @loreg: the low 32 bit reg to read
 547  * @offset_loaded: has the initial offset been loaded yet
 548  * @offset: ptr to current offset value
 549  * @stat: ptr to the stat
 550  *
 551  * Since the device stats are not reset at PFReset, they likely will not
 552  * be zeroed when the driver starts.  We'll save the first values read
 553  * and use them as offsets to be subtracted from the raw values in order
 554  * to report stats that count from zero.  In the process, we also manage
 555  * the potential roll-over.
 556  **/
 557 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 558                                bool offset_loaded, u64 *offset, u64 *stat)
 559 {
 560         u64 new_data;
 561
 562         if (hw->device_id == I40E_DEV_ID_QEMU) {
 563                 new_data = rd32(hw, loreg);
 564                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 565         } else {
 566                 new_data = rd64(hw, loreg);
 567         }
 568         if (!offset_loaded)
 569                 *offset = new_data;
 570         if (likely(new_data >= *offset))
 571                 *stat = new_data - *offset;
 572         else
 573                 *stat = (new_data + BIT_ULL(48)) - *offset;
 574         *stat &= 0xFFFFFFFFFFFFULL;
 575 }
 576
 577 /**
 578  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 579  * @hw: ptr to the hardware info
 580  * @reg: the hw reg to read
 581  * @offset_loaded: has the initial offset been loaded yet
 582  * @offset: ptr to current offset value
 583  * @stat: ptr to the stat
 584  **/
 585 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 586                                bool offset_loaded, u64 *offset, u64 *stat)
 587 {
 588         u32 new_data;
 589
 590         new_data = rd32(hw, reg);
 591         if (!offset_loaded)
 592                 *offset = new_data;
 593         if (likely(new_data >= *offset))
 594                 *stat = (u32)(new_data - *offset);
 595         else
 596                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 597 }
 598
 599 /**
 600  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 601  * @vsi: the VSI to be updated
 602  **/
 603 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 604 {
 605         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 606         struct i40e_pf *pf = vsi->back;
 607         struct i40e_hw *hw = &pf->hw;
 608         struct i40e_eth_stats *oes;
 609         struct i40e_eth_stats *es;     /* device's eth stats */
 610
 611         es = &vsi->eth_stats;
 612         oes = &vsi->eth_stats_offsets;
 613
 614         /* Gather up the stats that the hw collects */
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_discards, &es->rx_discards);
 621         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 622                            vsi->stat_offsets_loaded,
 623                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 624         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->tx_errors, &es->tx_errors);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 629                            I40E_GLV_GORCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->rx_bytes, &es->rx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 633                            I40E_GLV_UPRCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_unicast, &es->rx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 637                            I40E_GLV_MPRCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->rx_multicast, &es->rx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 641                            I40E_GLV_BPRCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->rx_broadcast, &es->rx_broadcast);
 644
 645         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 646                            I40E_GLV_GOTCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->tx_bytes, &es->tx_bytes);
 649         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 650                            I40E_GLV_UPTCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->tx_unicast, &es->tx_unicast);
 653         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 654                            I40E_GLV_MPTCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->tx_multicast, &es->tx_multicast);
 657         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 658                            I40E_GLV_BPTCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->tx_broadcast, &es->tx_broadcast);
 661         vsi->stat_offsets_loaded = true;
 662 }
 663
 664 /**
 665  * i40e_update_veb_stats - Update Switch component statistics
 666  * @veb: the VEB being updated
 667  **/
 668 static void i40e_update_veb_stats(struct i40e_veb *veb)
 669 {
 670         struct i40e_pf *pf = veb->pf;
 671         struct i40e_hw *hw = &pf->hw;
 672         struct i40e_eth_stats *oes;
 673         struct i40e_eth_stats *es;     /* device's eth stats */
 674         struct i40e_veb_tc_stats *veb_oes;
 675         struct i40e_veb_tc_stats *veb_es;
 676         int i, idx = 0;
 677
 678         idx = veb->stats_idx;
 679         es = &veb->stats;
 680         oes = &veb->stats_offsets;
 681         veb_es = &veb->tc_stats;
 682         veb_oes = &veb->tc_stats_offsets;
 683
 684         /* Gather up the stats that the hw collects */
 685         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->tx_discards, &es->tx_discards);
 688         if (hw->revision_id > 0)
 689                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 690                                    veb->stat_offsets_loaded,
 691                                    &oes->rx_unknown_protocol,
 692                                    &es->rx_unknown_protocol);
 693         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_bytes, &es->rx_bytes);
 696         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->rx_unicast, &es->rx_unicast);
 699         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->rx_multicast, &es->rx_multicast);
 702         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->rx_broadcast, &es->rx_broadcast);
 705
 706         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_bytes, &es->tx_bytes);
 709         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->tx_unicast, &es->tx_unicast);
 712         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->tx_multicast, &es->tx_multicast);
 715         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 716                            veb->stat_offsets_loaded,
 717                            &oes->tx_broadcast, &es->tx_broadcast);
 718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 720                                    I40E_GLVEBTC_RPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_rx_packets[i],
 723                                    &veb_es->tc_rx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 725                                    I40E_GLVEBTC_RBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_rx_bytes[i],
 728                                    &veb_es->tc_rx_bytes[i]);
 729                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 730                                    I40E_GLVEBTC_TPCL(i, idx),
 731                                    veb->stat_offsets_loaded,
 732                                    &veb_oes->tc_tx_packets[i],
 733                                    &veb_es->tc_tx_packets[i]);
 734                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 735                                    I40E_GLVEBTC_TBCL(i, idx),
 736                                    veb->stat_offsets_loaded,
 737                                    &veb_oes->tc_tx_bytes[i],
 738                                    &veb_es->tc_tx_bytes[i]);
 739         }
 740         veb->stat_offsets_loaded = true;
 741 }
 742
 743 #ifdef I40E_FCOE
 744 /**
 745  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 746  * @vsi: the VSI that is capable of doing FCoE
 747  **/
 748 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct i40e_hw *hw = &pf->hw;
 752         struct i40e_fcoe_stats *ofs;
 753         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 754         int idx;
 755
 756         if (vsi->type != I40E_VSI_FCOE)
 757                 return;
 758
 759         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 760         fs = &vsi->fcoe_stats;
 761         ofs = &vsi->fcoe_stats_offsets;
 762
 763         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 772         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 775         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 778         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 781         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 784         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 785                            vsi->fcoe_stat_offsets_loaded,
 786                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 787
 788         vsi->fcoe_stat_offsets_loaded = true;
 789 }
 790
 791 #endif
 792 /**
 793  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 794  * @pf: the corresponding PF
 795  *
 796  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 797  **/
 798 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 799 {
 800         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 801         struct i40e_hw_port_stats *nsd = &pf->stats;
 802         struct i40e_hw *hw = &pf->hw;
 803         u64 xoff = 0;
 804
 805         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 806             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 807                 return;
 808
 809         xoff = nsd->link_xoff_rx;
 810         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 811                            pf->stat_offsets_loaded,
 812                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 813
 814         /* No new LFC xoff rx */
 815         if (!(nsd->link_xoff_rx - xoff))
 816                 return;
 817
 818 }
 819
 820 /**
 821  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 822  * @pf: the corresponding PF
 823  *
 824  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 825  **/
 826 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 827 {
 828         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 829         struct i40e_hw_port_stats *nsd = &pf->stats;
 830         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 831         struct i40e_dcbx_config *dcb_cfg;
 832         struct i40e_hw *hw = &pf->hw;
 833         u16 i;
 834         u8 tc;
 835
 836         dcb_cfg = &hw->local_dcbx_config;
 837
 838         /* Collect Link XOFF stats when PFC is disabled */
 839         if (!dcb_cfg->pfc.pfcenable) {
 840                 i40e_update_link_xoff_rx(pf);
 841                 return;
 842         }
 843
 844         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 845                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 846
 847                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 848                                    pf->stat_offsets_loaded,
 849                                    &osd->priority_xoff_rx[i],
 850                                    &nsd->priority_xoff_rx[i]);
 851
 852                 /* No new PFC xoff rx */
 853                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 854                         continue;
 855                 /* Get the TC for given priority */
 856                 tc = dcb_cfg->etscfg.prioritytable[i];
 857                 xoff[tc] = true;
 858         }
 859 }
 860
 861 /**
 862  * i40e_update_vsi_stats - Update the vsi statistics counters.
 863  * @vsi: the VSI to be updated
 864  *
 865  * There are a few instances where we store the same stat in a
 866  * couple of different structs.  This is partly because we have
 867  * the netdev stats that need to be filled out, which is slightly
 868  * different from the "eth_stats" defined by the chip and used in
 869  * VF communications.  We sort it out here.
 870  **/
 871 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 872 {
 873         struct i40e_pf *pf = vsi->back;
 874         struct rtnl_link_stats64 *ons;
 875         struct rtnl_link_stats64 *ns;   /* netdev stats */
 876         struct i40e_eth_stats *oes;
 877         struct i40e_eth_stats *es;     /* device's eth stats */
 878         u32 tx_restart, tx_busy;
 879         struct i40e_ring *p;
 880         u32 rx_page, rx_buf;
 881         u64 bytes, packets;
 882         unsigned int start;
 883         u64 tx_linearize;
 884         u64 rx_p, rx_b;
 885         u64 tx_p, tx_b;
 886         u16 q;
 887
 888         if (test_bit(__I40E_DOWN, &vsi->state) ||
 889             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 890                 return;
 891
 892         ns = i40e_get_vsi_stats_struct(vsi);
 893         ons = &vsi->net_stats_offsets;
 894         es = &vsi->eth_stats;
 895         oes = &vsi->eth_stats_offsets;
 896
 897         /* Gather up the netdev and vsi stats that the driver collects
 898          * on the fly during packet processing
 899          */
 900         rx_b = rx_p = 0;
 901         tx_b = tx_p = 0;
 902         tx_restart = tx_busy = tx_linearize = 0;
 903         rx_page = 0;
 904         rx_buf = 0;
 905         rcu_read_lock();
 906         for (q = 0; q < vsi->num_queue_pairs; q++) {
 907                 /* locate Tx ring */
 908                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 909
 910                 do {
 911                         start = u64_stats_fetch_begin_irq(&p->syncp);
 912                         packets = p->stats.packets;
 913                         bytes = p->stats.bytes;
 914                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 915                 tx_b += bytes;
 916                 tx_p += packets;
 917                 tx_restart += p->tx_stats.restart_queue;
 918                 tx_busy += p->tx_stats.tx_busy;
 919                 tx_linearize += p->tx_stats.tx_linearize;
 920
 921                 /* Rx queue is part of the same block as Tx queue */
 922                 p = &p[1];
 923                 do {
 924                         start = u64_stats_fetch_begin_irq(&p->syncp);
 925                         packets = p->stats.packets;
 926                         bytes = p->stats.bytes;
 927                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 928                 rx_b += bytes;
 929                 rx_p += packets;
 930                 rx_buf += p->rx_stats.alloc_buff_failed;
 931                 rx_page += p->rx_stats.alloc_page_failed;
 932         }
 933         rcu_read_unlock();
 934         vsi->tx_restart = tx_restart;
 935         vsi->tx_busy = tx_busy;
 936         vsi->tx_linearize = tx_linearize;
 937         vsi->rx_page_failed = rx_page;
 938         vsi->rx_buf_failed = rx_buf;
 939
 940         ns->rx_packets = rx_p;
 941         ns->rx_bytes = rx_b;
 942         ns->tx_packets = tx_p;
 943         ns->tx_bytes = tx_b;
 944
 945         /* update netdev stats from eth stats */
 946         i40e_update_eth_stats(vsi);
 947         ons->tx_errors = oes->tx_errors;
 948         ns->tx_errors = es->tx_errors;
 949         ons->multicast = oes->rx_multicast;
 950         ns->multicast = es->rx_multicast;
 951         ons->rx_dropped = oes->rx_discards;
 952         ns->rx_dropped = es->rx_discards;
 953         ons->tx_dropped = oes->tx_discards;
 954         ns->tx_dropped = es->tx_discards;
 955
 956         /* pull in a couple PF stats if this is the main vsi */
 957         if (vsi == pf->vsi[pf->lan_vsi]) {
 958                 ns->rx_crc_errors = pf->stats.crc_errors;
 959                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 960                 ns->rx_length_errors = pf->stats.rx_length_errors;
 961         }
 962 }
 963
 964 /**
 965  * i40e_update_pf_stats - Update the PF statistics counters.
 966  * @pf: the PF to be updated
 967  **/
 968 static void i40e_update_pf_stats(struct i40e_pf *pf)
 969 {
 970         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 971         struct i40e_hw_port_stats *nsd = &pf->stats;
 972         struct i40e_hw *hw = &pf->hw;
 973         u32 val;
 974         int i;
 975
 976         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 977                            I40E_GLPRT_GORCL(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 980         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 981                            I40E_GLPRT_GOTCL(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 984         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->eth.rx_discards,
 987                            &nsd->eth.rx_discards);
 988         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 989                            I40E_GLPRT_UPRCL(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_unicast,
 992                            &nsd->eth.rx_unicast);
 993         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 994                            I40E_GLPRT_MPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_multicast,
 997                            &nsd->eth.rx_multicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 999                            I40E_GLPRT_BPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_broadcast,
1002                            &nsd->eth.rx_broadcast);
1003         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1004                            I40E_GLPRT_UPTCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.tx_unicast,
1007                            &nsd->eth.tx_unicast);
1008         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1009                            I40E_GLPRT_MPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_multicast,
1012                            &nsd->eth.tx_multicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1014                            I40E_GLPRT_BPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_broadcast,
1017                            &nsd->eth.tx_broadcast);
1018
1019         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->tx_dropped_link_down,
1022                            &nsd->tx_dropped_link_down);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->crc_errors, &nsd->crc_errors);
1027
1028         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->illegal_bytes, &nsd->illegal_bytes);
1031
1032         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->mac_local_faults,
1035                            &nsd->mac_local_faults);
1036         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->mac_remote_faults,
1039                            &nsd->mac_remote_faults);
1040
1041         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_length_errors,
1044                            &nsd->rx_length_errors);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->link_xon_rx, &nsd->link_xon_rx);
1049         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xon_tx, &nsd->link_xon_tx);
1052         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1053         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1056
1057         for (i = 0; i < 8; i++) {
1058                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1059                                    pf->stat_offsets_loaded,
1060                                    &osd->priority_xon_rx[i],
1061                                    &nsd->priority_xon_rx[i]);
1062                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1063                                    pf->stat_offsets_loaded,
1064                                    &osd->priority_xon_tx[i],
1065                                    &nsd->priority_xon_tx[i]);
1066                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1067                                    pf->stat_offsets_loaded,
1068                                    &osd->priority_xoff_tx[i],
1069                                    &nsd->priority_xoff_tx[i]);
1070                 i40e_stat_update32(hw,
1071                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xon_2_xoff[i],
1074                                    &nsd->priority_xon_2_xoff[i]);
1075         }
1076
1077         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1078                            I40E_GLPRT_PRC64L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_size_64, &nsd->rx_size_64);
1081         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1082                            I40E_GLPRT_PRC127L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->rx_size_127, &nsd->rx_size_127);
1085         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1086                            I40E_GLPRT_PRC255L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_size_255, &nsd->rx_size_255);
1089         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1090                            I40E_GLPRT_PRC511L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->rx_size_511, &nsd->rx_size_511);
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1094                            I40E_GLPRT_PRC1023L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_1023, &nsd->rx_size_1023);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1098                            I40E_GLPRT_PRC1522L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_1522, &nsd->rx_size_1522);
1101         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1102                            I40E_GLPRT_PRC9522L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->rx_size_big, &nsd->rx_size_big);
1105
1106         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1107                            I40E_GLPRT_PTC64L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->tx_size_64, &nsd->tx_size_64);
1110         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1111                            I40E_GLPRT_PTC127L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_size_127, &nsd->tx_size_127);
1114         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1115                            I40E_GLPRT_PTC255L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->tx_size_255, &nsd->tx_size_255);
1118         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1119                            I40E_GLPRT_PTC511L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->tx_size_511, &nsd->tx_size_511);
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1123                            I40E_GLPRT_PTC1023L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_1023, &nsd->tx_size_1023);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1127                            I40E_GLPRT_PTC1522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_1522, &nsd->tx_size_1522);
1130         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1131                            I40E_GLPRT_PTC9522L(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->tx_size_big, &nsd->tx_size_big);
1134
1135         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1136                            pf->stat_offsets_loaded,
1137                            &osd->rx_undersize, &nsd->rx_undersize);
1138         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1139                            pf->stat_offsets_loaded,
1140                            &osd->rx_fragments, &nsd->rx_fragments);
1141         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1142                            pf->stat_offsets_loaded,
1143                            &osd->rx_oversize, &nsd->rx_oversize);
1144         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1145                            pf->stat_offsets_loaded,
1146                            &osd->rx_jabber, &nsd->rx_jabber);
1147
1148         /* FDIR stats */
1149         i40e_stat_update32(hw,
1150                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1151                            pf->stat_offsets_loaded,
1152                            &osd->fd_atr_match, &nsd->fd_atr_match);
1153         i40e_stat_update32(hw,
1154                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1155                            pf->stat_offsets_loaded,
1156                            &osd->fd_sb_match, &nsd->fd_sb_match);
1157         i40e_stat_update32(hw,
1158                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1159                       pf->stat_offsets_loaded,
1160                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1161
1162         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1163         nsd->tx_lpi_status =
1164                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1165                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1166         nsd->rx_lpi_status =
1167                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1168                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1169         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1170                            pf->stat_offsets_loaded,
1171                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1172         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1173                            pf->stat_offsets_loaded,
1174                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1175
1176         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1177             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1178                 nsd->fd_sb_status = true;
1179         else
1180                 nsd->fd_sb_status = false;
1181
1182         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1183             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1184                 nsd->fd_atr_status = true;
1185         else
1186                 nsd->fd_atr_status = false;
1187
1188         pf->stat_offsets_loaded = true;
1189 }
1190
1191 /**
1192  * i40e_update_stats - Update the various statistics counters.
1193  * @vsi: the VSI to be updated
1194  *
1195  * Update the various stats for this VSI and its related entities.
1196  **/
1197 void i40e_update_stats(struct i40e_vsi *vsi)
1198 {
1199         struct i40e_pf *pf = vsi->back;
1200
1201         if (vsi == pf->vsi[pf->lan_vsi])
1202                 i40e_update_pf_stats(pf);
1203
1204         i40e_update_vsi_stats(vsi);
1205 #ifdef I40E_FCOE
1206         i40e_update_fcoe_stats(vsi);
1207 #endif
1208 }
1209
1210 /**
1211  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1212  * @vsi: the VSI to be searched
1213  * @macaddr: the MAC address
1214  * @vlan: the vlan
1215  * @is_vf: make sure its a VF filter, else doesn't matter
1216  * @is_netdev: make sure its a netdev filter, else doesn't matter
1217  *
1218  * Returns ptr to the filter object or NULL
1219  **/
1220 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1221                                                 u8 *macaddr, s16 vlan,
1222                                                 bool is_vf, bool is_netdev)
1223 {
1224         struct i40e_mac_filter *f;
1225
1226         if (!vsi || !macaddr)
1227                 return NULL;
1228
1229         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1230                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1231                     (vlan == f->vlan)    &&
1232                     (!is_vf || f->is_vf) &&
1233                     (!is_netdev || f->is_netdev))
1234                         return f;
1235         }
1236         return NULL;
1237 }
1238
1239 /**
1240  * i40e_find_mac - Find a mac addr in the macvlan filters list
1241  * @vsi: the VSI to be searched
1242  * @macaddr: the MAC address we are searching for
1243  * @is_vf: make sure its a VF filter, else doesn't matter
1244  * @is_netdev: make sure its a netdev filter, else doesn't matter
1245  *
1246  * Returns the first filter with the provided MAC address or NULL if
1247  * MAC address was not found
1248  **/
1249 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1250                                       bool is_vf, bool is_netdev)
1251 {
1252         struct i40e_mac_filter *f;
1253
1254         if (!vsi || !macaddr)
1255                 return NULL;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1259                     (!is_vf || f->is_vf) &&
1260                     (!is_netdev || f->is_netdev))
1261                         return f;
1262         }
1263         return NULL;
1264 }
1265
1266 /**
1267  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1268  * @vsi: the VSI to be searched
1269  *
1270  * Returns true if VSI is in vlan mode or false otherwise
1271  **/
1272 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1273 {
1274         struct i40e_mac_filter *f;
1275
1276         /* Only -1 for all the filters denotes not in vlan mode
1277          * so we have to go through all the list in order to make sure
1278          */
1279         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1280                 if (f->vlan >= 0 || vsi->info.pvid)
1281                         return true;
1282         }
1283
1284         return false;
1285 }
1286
1287 /**
1288  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1289  * @vsi: the VSI to be searched
1290  * @macaddr: the mac address to be filtered
1291  * @is_vf: true if it is a VF
1292  * @is_netdev: true if it is a netdev
1293  *
1294  * Goes through all the macvlan filters and adds a
1295  * macvlan filter for each unique vlan that already exists
1296  *
1297  * Returns first filter found on success, else NULL
1298  **/
1299 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1300                                              bool is_vf, bool is_netdev)
1301 {
1302         struct i40e_mac_filter *f;
1303
1304         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1305                 if (vsi->info.pvid)
1306                         f->vlan = le16_to_cpu(vsi->info.pvid);
1307                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1308                                       is_vf, is_netdev)) {
1309                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1310                                              is_vf, is_netdev))
1311                                 return NULL;
1312                 }
1313         }
1314
1315         return list_first_entry_or_null(&vsi->mac_filter_list,
1316                                         struct i40e_mac_filter, list);
1317 }
1318
1319 /**
1320  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1321  * @vsi: the PF Main VSI - inappropriate for any other VSI
1322  * @macaddr: the MAC address
1323  *
1324  * Some older firmware configurations set up a default promiscuous VLAN
1325  * filter that needs to be removed.
1326  **/
1327 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1328 {
1329         struct i40e_aqc_remove_macvlan_element_data element;
1330         struct i40e_pf *pf = vsi->back;
1331         i40e_status ret;
1332
1333         /* Only appropriate for the PF main VSI */
1334         if (vsi->type != I40E_VSI_MAIN)
1335                 return -EINVAL;
1336
1337         memset(&element, 0, sizeof(element));
1338         ether_addr_copy(element.mac_addr, macaddr);
1339         element.vlan_tag = 0;
1340         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1341                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1342         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1343         if (ret)
1344                 return -ENOENT;
1345
1346         return 0;
1347 }
1348
1349 /**
1350  * i40e_add_filter - Add a mac/vlan filter to the VSI
1351  * @vsi: the VSI to be searched
1352  * @macaddr: the MAC address
1353  * @vlan: the vlan
1354  * @is_vf: make sure its a VF filter, else doesn't matter
1355  * @is_netdev: make sure its a netdev filter, else doesn't matter
1356  *
1357  * Returns ptr to the filter object or NULL when no memory available.
1358  *
1359  * NOTE: This function is expected to be called with mac_filter_list_lock
1360  * being held.
1361  **/
1362 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1363                                         u8 *macaddr, s16 vlan,
1364                                         bool is_vf, bool is_netdev)
1365 {
1366         struct i40e_mac_filter *f;
1367
1368         if (!vsi || !macaddr)
1369                 return NULL;
1370
1371         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1372         if (!f) {
1373                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1374                 if (!f)
1375                         goto add_filter_out;
1376
1377                 ether_addr_copy(f->macaddr, macaddr);
1378                 f->vlan = vlan;
1379                 f->changed = true;
1380
1381                 INIT_LIST_HEAD(&f->list);
1382                 list_add(&f->list, &vsi->mac_filter_list);
1383         }
1384
1385         /* increment counter and add a new flag if needed */
1386         if (is_vf) {
1387                 if (!f->is_vf) {
1388                         f->is_vf = true;
1389                         f->counter++;
1390                 }
1391         } else if (is_netdev) {
1392                 if (!f->is_netdev) {
1393                         f->is_netdev = true;
1394                         f->counter++;
1395                 }
1396         } else {
1397                 f->counter++;
1398         }
1399
1400         /* changed tells sync_filters_subtask to
1401          * push the filter down to the firmware
1402          */
1403         if (f->changed) {
1404                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1405                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1406         }
1407
1408 add_filter_out:
1409         return f;
1410 }
1411
1412 /**
1413  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1414  * @vsi: the VSI to be searched
1415  * @macaddr: the MAC address
1416  * @vlan: the vlan
1417  * @is_vf: make sure it's a VF filter, else doesn't matter
1418  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1419  *
1420  * NOTE: This function is expected to be called with mac_filter_list_lock
1421  * being held.
1422  **/
1423 void i40e_del_filter(struct i40e_vsi *vsi,
1424                      u8 *macaddr, s16 vlan,
1425                      bool is_vf, bool is_netdev)
1426 {
1427         struct i40e_mac_filter *f;
1428
1429         if (!vsi || !macaddr)
1430                 return;
1431
1432         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1433         if (!f || f->counter == 0)
1434                 return;
1435
1436         if (is_vf) {
1437                 if (f->is_vf) {
1438                         f->is_vf = false;
1439                         f->counter--;
1440                 }
1441         } else if (is_netdev) {
1442                 if (f->is_netdev) {
1443                         f->is_netdev = false;
1444                         f->counter--;
1445                 }
1446         } else {
1447                 /* make sure we don't remove a filter in use by VF or netdev */
1448                 int min_f = 0;
1449
1450                 min_f += (f->is_vf ? 1 : 0);
1451                 min_f += (f->is_netdev ? 1 : 0);
1452
1453                 if (f->counter > min_f)
1454                         f->counter--;
1455         }
1456
1457         /* counter == 0 tells sync_filters_subtask to
1458          * remove the filter from the firmware's list
1459          */
1460         if (f->counter == 0) {
1461                 f->changed = true;
1462                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1463                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1464         }
1465 }
1466
1467 /**
1468  * i40e_set_mac - NDO callback to set mac address
1469  * @netdev: network interface device structure
1470  * @p: pointer to an address structure
1471  *
1472  * Returns 0 on success, negative on failure
1473  **/
1474 #ifdef I40E_FCOE
1475 int i40e_set_mac(struct net_device *netdev, void *p)
1476 #else
1477 static int i40e_set_mac(struct net_device *netdev, void *p)
1478 #endif
1479 {
1480         struct i40e_netdev_priv *np = netdev_priv(netdev);
1481         struct i40e_vsi *vsi = np->vsi;
1482         struct i40e_pf *pf = vsi->back;
1483         struct i40e_hw *hw = &pf->hw;
1484         struct sockaddr *addr = p;
1485         struct i40e_mac_filter *f;
1486
1487         if (!is_valid_ether_addr(addr->sa_data))
1488                 return -EADDRNOTAVAIL;
1489
1490         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1491                 netdev_info(netdev, "already using mac address %pM\n",
1492                             addr->sa_data);
1493                 return 0;
1494         }
1495
1496         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1497             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1498                 return -EADDRNOTAVAIL;
1499
1500         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1501                 netdev_info(netdev, "returning to hw mac address %pM\n",
1502                             hw->mac.addr);
1503         else
1504                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1505
1506         if (vsi->type == I40E_VSI_MAIN) {
1507                 i40e_status ret;
1508
1509                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1510                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1511                                                 addr->sa_data, NULL);
1512                 if (ret) {
1513                         netdev_info(netdev,
1514                                     "Addr change for Main VSI failed: %d\n",
1515                                     ret);
1516                         return -EADDRNOTAVAIL;
1517                 }
1518         }
1519
1520         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1521                 struct i40e_aqc_remove_macvlan_element_data element;
1522
1523                 memset(&element, 0, sizeof(element));
1524                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1525                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1526                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1527         } else {
1528                 spin_lock_bh(&vsi->mac_filter_list_lock);
1529                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1530                                 false, false);
1531                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1532         }
1533
1534         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1535                 struct i40e_aqc_add_macvlan_element_data element;
1536
1537                 memset(&element, 0, sizeof(element));
1538                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1539                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1540                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1541         } else {
1542                 spin_lock_bh(&vsi->mac_filter_list_lock);
1543                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1544                                     false, false);
1545                 if (f)
1546                         f->is_laa = true;
1547                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1548         }
1549
1550         i40e_sync_vsi_filters(vsi, false);
1551         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1552
1553         return 0;
1554 }
1555
1556 /**
1557  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1558  * @vsi: the VSI being setup
1559  * @ctxt: VSI context structure
1560  * @enabled_tc: Enabled TCs bitmap
1561  * @is_add: True if called before Add VSI
1562  *
1563  * Setup VSI queue mapping for enabled traffic classes.
1564  **/
1565 #ifdef I40E_FCOE
1566 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1567                               struct i40e_vsi_context *ctxt,
1568                               u8 enabled_tc,
1569                               bool is_add)
1570 #else
1571 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1572                                      struct i40e_vsi_context *ctxt,
1573                                      u8 enabled_tc,
1574                                      bool is_add)
1575 #endif
1576 {
1577         struct i40e_pf *pf = vsi->back;
1578         u16 sections = 0;
1579         u8 netdev_tc = 0;
1580         u16 numtc = 0;
1581         u16 qcount;
1582         u8 offset;
1583         u16 qmap;
1584         int i;
1585         u16 num_tc_qps = 0;
1586
1587         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1588         offset = 0;
1589
1590         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1591                 /* Find numtc from enabled TC bitmap */
1592                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1593                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1594                                 numtc++;
1595                 }
1596                 if (!numtc) {
1597                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1598                         numtc = 1;
1599                 }
1600         } else {
1601                 /* At least TC0 is enabled in case of non-DCB case */
1602                 numtc = 1;
1603         }
1604
1605         vsi->tc_config.numtc = numtc;
1606         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1607         /* Number of queues per enabled TC */
1608         /* In MFP case we can have a much lower count of MSIx
1609          * vectors available and so we need to lower the used
1610          * q count.
1611          */
1612         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1613                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1614         else
1615                 qcount = vsi->alloc_queue_pairs;
1616         num_tc_qps = qcount / numtc;
1617         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1618
1619         /* Setup queue offset/count for all TCs for given VSI */
1620         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1621                 /* See if the given TC is enabled for the given VSI */
1622                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1623                         /* TC is enabled */
1624                         int pow, num_qps;
1625
1626                         switch (vsi->type) {
1627                         case I40E_VSI_MAIN:
1628                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1629                                 break;
1630 #ifdef I40E_FCOE
1631                         case I40E_VSI_FCOE:
1632                                 qcount = num_tc_qps;
1633                                 break;
1634 #endif
1635                         case I40E_VSI_FDIR:
1636                         case I40E_VSI_SRIOV:
1637                         case I40E_VSI_VMDQ2:
1638                         default:
1639                                 qcount = num_tc_qps;
1640                                 WARN_ON(i != 0);
1641                                 break;
1642                         }
1643                         vsi->tc_config.tc_info[i].qoffset = offset;
1644                         vsi->tc_config.tc_info[i].qcount = qcount;
1645
1646                         /* find the next higher power-of-2 of num queue pairs */
1647                         num_qps = qcount;
1648                         pow = 0;
1649                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1650                                 pow++;
1651                                 num_qps >>= 1;
1652                         }
1653
1654                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1655                         qmap =
1656                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1657                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1658
1659                         offset += qcount;
1660                 } else {
1661                         /* TC is not enabled so set the offset to
1662                          * default queue and allocate one queue
1663                          * for the given TC.
1664                          */
1665                         vsi->tc_config.tc_info[i].qoffset = 0;
1666                         vsi->tc_config.tc_info[i].qcount = 1;
1667                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1668
1669                         qmap = 0;
1670                 }
1671                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1672         }
1673
1674         /* Set actual Tx/Rx queue pairs */
1675         vsi->num_queue_pairs = offset;
1676         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1677                 if (vsi->req_queue_pairs > 0)
1678                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1679                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1680                         vsi->num_queue_pairs = pf->num_lan_msix;
1681         }
1682
1683         /* Scheduler section valid can only be set for ADD VSI */
1684         if (is_add) {
1685                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1686
1687                 ctxt->info.up_enable_bits = enabled_tc;
1688         }
1689         if (vsi->type == I40E_VSI_SRIOV) {
1690                 ctxt->info.mapping_flags |=
1691                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1692                 for (i = 0; i < vsi->num_queue_pairs; i++)
1693                         ctxt->info.queue_mapping[i] =
1694                                                cpu_to_le16(vsi->base_queue + i);
1695         } else {
1696                 ctxt->info.mapping_flags |=
1697                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1698                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1699         }
1700         ctxt->info.valid_sections |= cpu_to_le16(sections);
1701 }
1702
1703 /**
1704  * i40e_set_rx_mode - NDO callback to set the netdev filters
1705  * @netdev: network interface device structure
1706  **/
1707 #ifdef I40E_FCOE
1708 void i40e_set_rx_mode(struct net_device *netdev)
1709 #else
1710 static void i40e_set_rx_mode(struct net_device *netdev)
1711 #endif
1712 {
1713         struct i40e_netdev_priv *np = netdev_priv(netdev);
1714         struct i40e_mac_filter *f, *ftmp;
1715         struct i40e_vsi *vsi = np->vsi;
1716         struct netdev_hw_addr *uca;
1717         struct netdev_hw_addr *mca;
1718         struct netdev_hw_addr *ha;
1719
1720         spin_lock_bh(&vsi->mac_filter_list_lock);
1721
1722         /* add addr if not already in the filter list */
1723         netdev_for_each_uc_addr(uca, netdev) {
1724                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1725                         if (i40e_is_vsi_in_vlan(vsi))
1726                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1727                                                      false, true);
1728                         else
1729                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1730                                                 false, true);
1731                 }
1732         }
1733
1734         netdev_for_each_mc_addr(mca, netdev) {
1735                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1736                         if (i40e_is_vsi_in_vlan(vsi))
1737                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1738                                                      false, true);
1739                         else
1740                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1741                                                 false, true);
1742                 }
1743         }
1744
1745         /* remove filter if not in netdev list */
1746         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1747
1748                 if (!f->is_netdev)
1749                         continue;
1750
1751                 netdev_for_each_mc_addr(mca, netdev)
1752                         if (ether_addr_equal(mca->addr, f->macaddr))
1753                                 goto bottom_of_search_loop;
1754
1755                 netdev_for_each_uc_addr(uca, netdev)
1756                         if (ether_addr_equal(uca->addr, f->macaddr))
1757                                 goto bottom_of_search_loop;
1758
1759                 for_each_dev_addr(netdev, ha)
1760                         if (ether_addr_equal(ha->addr, f->macaddr))
1761                                 goto bottom_of_search_loop;
1762
1763                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1764                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1765
1766 bottom_of_search_loop:
1767                 continue;
1768         }
1769         spin_unlock_bh(&vsi->mac_filter_list_lock);
1770
1771         /* check for other flag changes */
1772         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1773                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1774                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1775         }
1776 }
1777
1778 /**
1779  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1780  * @src: source MAC filter entry to be clones
1781  *
1782  * Returns the pointer to newly cloned MAC filter entry or NULL
1783  * in case of error
1784  **/
1785 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1786                                         struct i40e_mac_filter *src)
1787 {
1788         struct i40e_mac_filter *f;
1789
1790         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1791         if (!f)
1792                 return NULL;
1793         *f = *src;
1794
1795         INIT_LIST_HEAD(&f->list);
1796
1797         return f;
1798 }
1799
1800 /**
1801  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1802  * @vsi: pointer to vsi struct
1803  * @from: Pointer to list which contains MAC filter entries - changes to
1804  *        those entries needs to be undone.
1805  *
1806  * MAC filter entries from list were slated to be removed from device.
1807  **/
1808 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1809                                          struct list_head *from)
1810 {
1811         struct i40e_mac_filter *f, *ftmp;
1812
1813         list_for_each_entry_safe(f, ftmp, from, list) {
1814                 f->changed = true;
1815                 /* Move the element back into MAC filter list*/
1816                 list_move_tail(&f->list, &vsi->mac_filter_list);
1817         }
1818 }
1819
1820 /**
1821  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1822  * @vsi: pointer to vsi struct
1823  *
1824  * MAC filter entries from list were slated to be added from device.
1825  **/
1826 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1827 {
1828         struct i40e_mac_filter *f, *ftmp;
1829
1830         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1831                 if (!f->changed && f->counter)
1832                         f->changed = true;
1833         }
1834 }
1835
1836 /**
1837  * i40e_cleanup_add_list - Deletes the element from add list and release
1838  *                      memory
1839  * @add_list: Pointer to list which contains MAC filter entries
1840  **/
1841 static void i40e_cleanup_add_list(struct list_head *add_list)
1842 {
1843         struct i40e_mac_filter *f, *ftmp;
1844
1845         list_for_each_entry_safe(f, ftmp, add_list, list) {
1846                 list_del(&f->list);
1847                 kfree(f);
1848         }
1849 }
1850
1851 /**
1852  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1853  * @vsi: ptr to the VSI
1854  * @grab_rtnl: whether RTNL needs to be grabbed
1855  *
1856  * Push any outstanding VSI filter changes through the AdminQ.
1857  *
1858  * Returns 0 or error value
1859  **/
1860 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1861 {
1862         struct list_head tmp_del_list, tmp_add_list;
1863         struct i40e_mac_filter *f, *ftmp, *fclone;
1864         bool promisc_forced_on = false;
1865         bool add_happened = false;
1866         int filter_list_len = 0;
1867         u32 changed_flags = 0;
1868         bool err_cond = false;
1869         i40e_status ret = 0;
1870         struct i40e_pf *pf;
1871         int num_add = 0;
1872         int num_del = 0;
1873         int aq_err = 0;
1874         u16 cmd_flags;
1875
1876         /* empty array typed pointers, kcalloc later */
1877         struct i40e_aqc_add_macvlan_element_data *add_list;
1878         struct i40e_aqc_remove_macvlan_element_data *del_list;
1879
1880         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1881                 usleep_range(1000, 2000);
1882         pf = vsi->back;
1883
1884         if (vsi->netdev) {
1885                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1886                 vsi->current_netdev_flags = vsi->netdev->flags;
1887         }
1888
1889         INIT_LIST_HEAD(&tmp_del_list);
1890         INIT_LIST_HEAD(&tmp_add_list);
1891
1892         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1893                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1894
1895                 spin_lock_bh(&vsi->mac_filter_list_lock);
1896                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1897                         if (!f->changed)
1898                                 continue;
1899
1900                         if (f->counter != 0)
1901                                 continue;
1902                         f->changed = false;
1903
1904                         /* Move the element into temporary del_list */
1905                         list_move_tail(&f->list, &tmp_del_list);
1906                 }
1907
1908                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1909                         if (!f->changed)
1910                                 continue;
1911
1912                         if (f->counter == 0)
1913                                 continue;
1914                         f->changed = false;
1915
1916                         /* Clone MAC filter entry and add into temporary list */
1917                         fclone = i40e_mac_filter_entry_clone(f);
1918                         if (!fclone) {
1919                                 err_cond = true;
1920                                 break;
1921                         }
1922                         list_add_tail(&fclone->list, &tmp_add_list);
1923                 }
1924
1925                 /* if failed to clone MAC filter entry - undo */
1926                 if (err_cond) {
1927                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1928                         i40e_undo_add_filter_entries(vsi);
1929                 }
1930                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1931
1932                 if (err_cond)
1933                         i40e_cleanup_add_list(&tmp_add_list);
1934         }
1935
1936         /* Now process 'del_list' outside the lock */
1937         if (!list_empty(&tmp_del_list)) {
1938                 filter_list_len = pf->hw.aq.asq_buf_size /
1939                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1940                 del_list = kcalloc(filter_list_len,
1941                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1942                             GFP_KERNEL);
1943                 if (!del_list) {
1944                         i40e_cleanup_add_list(&tmp_add_list);
1945
1946                         /* Undo VSI's MAC filter entry element updates */
1947                         spin_lock_bh(&vsi->mac_filter_list_lock);
1948                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1949                         i40e_undo_add_filter_entries(vsi);
1950                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1951                         return -ENOMEM;
1952                 }
1953
1954                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1955                         cmd_flags = 0;
1956
1957                         /* add to delete list */
1958                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1959                         del_list[num_del].vlan_tag =
1960                                 cpu_to_le16((u16)(f->vlan ==
1961                                             I40E_VLAN_ANY ? 0 : f->vlan));
1962
1963                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1964                         del_list[num_del].flags = cmd_flags;
1965                         num_del++;
1966
1967                         /* flush a full buffer */
1968                         if (num_del == filter_list_len) {
1969                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1970                                                   vsi->seid, del_list, num_del,
1971                                                   NULL);
1972                                 aq_err = pf->hw.aq.asq_last_status;
1973                                 num_del = 0;
1974                                 memset(del_list, 0, sizeof(*del_list));
1975
1976                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1977                                         dev_err(&pf->pdev->dev,
1978                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1979                                                 i40e_stat_str(&pf->hw, ret),
1980                                                 i40e_aq_str(&pf->hw, aq_err));
1981                         }
1982                         /* Release memory for MAC filter entries which were
1983                          * synced up with HW.
1984                          */
1985                         list_del(&f->list);
1986                         kfree(f);
1987                 }
1988
1989                 if (num_del) {
1990                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1991                                                      del_list, num_del, NULL);
1992                         aq_err = pf->hw.aq.asq_last_status;
1993                         num_del = 0;
1994
1995                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1996                                 dev_info(&pf->pdev->dev,
1997                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1998                                          i40e_stat_str(&pf->hw, ret),
1999                                          i40e_aq_str(&pf->hw, aq_err));
2000                 }
2001
2002                 kfree(del_list);
2003                 del_list = NULL;
2004         }
2005
2006         if (!list_empty(&tmp_add_list)) {
2007
2008                 /* do all the adds now */
2009                 filter_list_len = pf->hw.aq.asq_buf_size /
2010                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2011                 add_list = kcalloc(filter_list_len,
2012                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2013                                GFP_KERNEL);
2014                 if (!add_list) {
2015                         /* Purge element from temporary lists */
2016                         i40e_cleanup_add_list(&tmp_add_list);
2017
2018                         /* Undo add filter entries from VSI MAC filter list */
2019                         spin_lock_bh(&vsi->mac_filter_list_lock);
2020                         i40e_undo_add_filter_entries(vsi);
2021                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2022                         return -ENOMEM;
2023                 }
2024
2025                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2026
2027                         add_happened = true;
2028                         cmd_flags = 0;
2029
2030                         /* add to add array */
2031                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2032                         add_list[num_add].vlan_tag =
2033                                 cpu_to_le16(
2034                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2035                         add_list[num_add].queue_number = 0;
2036
2037                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2038                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2039                         num_add++;
2040
2041                         /* flush a full buffer */
2042                         if (num_add == filter_list_len) {
2043                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2044                                                           add_list, num_add,
2045                                                           NULL);
2046                                 aq_err = pf->hw.aq.asq_last_status;
2047                                 num_add = 0;
2048
2049                                 if (ret)
2050                                         break;
2051                                 memset(add_list, 0, sizeof(*add_list));
2052                         }
2053                         /* Entries from tmp_add_list were cloned from MAC
2054                          * filter list, hence clean those cloned entries
2055                          */
2056                         list_del(&f->list);
2057                         kfree(f);
2058                 }
2059
2060                 if (num_add) {
2061                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2062                                                   add_list, num_add, NULL);
2063                         aq_err = pf->hw.aq.asq_last_status;
2064                         num_add = 0;
2065                 }
2066                 kfree(add_list);
2067                 add_list = NULL;
2068
2069                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
2070                         dev_info(&pf->pdev->dev,
2071                                  "add filter failed, err %s aq_err %s\n",
2072                                  i40e_stat_str(&pf->hw, ret),
2073                                  i40e_aq_str(&pf->hw, aq_err));
2074                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2075                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2076                                       &vsi->state)) {
2077                                 promisc_forced_on = true;
2078                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2079                                         &vsi->state);
2080                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2081                         }
2082                 }
2083         }
2084
2085         /* check for changes in promiscuous modes */
2086         if (changed_flags & IFF_ALLMULTI) {
2087                 bool cur_multipromisc;
2088
2089                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2090                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2091                                                             vsi->seid,
2092                                                             cur_multipromisc,
2093                                                             NULL);
2094                 if (ret)
2095                         dev_info(&pf->pdev->dev,
2096                                  "set multi promisc failed, err %s aq_err %s\n",
2097                                  i40e_stat_str(&pf->hw, ret),
2098                                  i40e_aq_str(&pf->hw,
2099                                              pf->hw.aq.asq_last_status));
2100         }
2101         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2102                 bool cur_promisc;
2103
2104                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2105                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2106                                         &vsi->state));
2107                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2108                         /* set defport ON for Main VSI instead of true promisc
2109                          * this way we will get all unicast/multicast and VLAN
2110                          * promisc behavior but will not get VF or VMDq traffic
2111                          * replicated on the Main VSI.
2112                          */
2113                         if (pf->cur_promisc != cur_promisc) {
2114                                 pf->cur_promisc = cur_promisc;
2115                                 if (grab_rtnl)
2116                                         i40e_do_reset_safe(pf,
2117                                                 BIT(__I40E_PF_RESET_REQUESTED));
2118                                 else
2119                                         i40e_do_reset(pf,
2120                                                 BIT(__I40E_PF_RESET_REQUESTED));
2121                         }
2122                 } else {
2123                         ret = i40e_aq_set_vsi_unicast_promiscuous(
2124                                                           &vsi->back->hw,
2125                                                           vsi->seid,
2126                                                           cur_promisc, NULL);
2127                         if (ret)
2128                                 dev_info(&pf->pdev->dev,
2129                                          "set unicast promisc failed, err %d, aq_err %d\n",
2130                                          ret, pf->hw.aq.asq_last_status);
2131                         ret = i40e_aq_set_vsi_multicast_promiscuous(
2132                                                           &vsi->back->hw,
2133                                                           vsi->seid,
2134                                                           cur_promisc, NULL);
2135                         if (ret)
2136                                 dev_info(&pf->pdev->dev,
2137                                          "set multicast promisc failed, err %d, aq_err %d\n",
2138                                          ret, pf->hw.aq.asq_last_status);
2139                 }
2140                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2141                                                 vsi->seid,
2142                                                 cur_promisc, NULL);
2143                 if (ret)
2144                         dev_info(&pf->pdev->dev,
2145                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2146                                  i40e_stat_str(&pf->hw, ret),
2147                                  i40e_aq_str(&pf->hw,
2148                                              pf->hw.aq.asq_last_status));
2149         }
2150
2151         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2152         return 0;
2153 }
2154
2155 /**
2156  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2157  * @pf: board private structure
2158  **/
2159 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2160 {
2161         int v;
2162
2163         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2164                 return;
2165         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2166
2167         for (v = 0; v < pf->num_alloc_vsi; v++) {
2168                 if (pf->vsi[v] &&
2169                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2170                         i40e_sync_vsi_filters(pf->vsi[v], true);
2171         }
2172 }
2173
2174 /**
2175  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2176  * @netdev: network interface device structure
2177  * @new_mtu: new value for maximum frame size
2178  *
2179  * Returns 0 on success, negative on failure
2180  **/
2181 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2182 {
2183         struct i40e_netdev_priv *np = netdev_priv(netdev);
2184         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2185         struct i40e_vsi *vsi = np->vsi;
2186
2187         /* MTU < 68 is an error and causes problems on some kernels */
2188         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2189                 return -EINVAL;
2190
2191         netdev_info(netdev, "changing MTU from %d to %d\n",
2192                     netdev->mtu, new_mtu);
2193         netdev->mtu = new_mtu;
2194         if (netif_running(netdev))
2195                 i40e_vsi_reinit_locked(vsi);
2196
2197         return 0;
2198 }
2199
2200 /**
2201  * i40e_ioctl - Access the hwtstamp interface
2202  * @netdev: network interface device structure
2203  * @ifr: interface request data
2204  * @cmd: ioctl command
2205  **/
2206 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2207 {
2208         struct i40e_netdev_priv *np = netdev_priv(netdev);
2209         struct i40e_pf *pf = np->vsi->back;
2210
2211         switch (cmd) {
2212         case SIOCGHWTSTAMP:
2213                 return i40e_ptp_get_ts_config(pf, ifr);
2214         case SIOCSHWTSTAMP:
2215                 return i40e_ptp_set_ts_config(pf, ifr);
2216         default:
2217                 return -EOPNOTSUPP;
2218         }
2219 }
2220
2221 /**
2222  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2223  * @vsi: the vsi being adjusted
2224  **/
2225 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2226 {
2227         struct i40e_vsi_context ctxt;
2228         i40e_status ret;
2229
2230         if ((vsi->info.valid_sections &
2231              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2232             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2233                 return;  /* already enabled */
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_STR_BOTH;
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_stripping_disable - Turn off vlan stripping for the VSI
2253  * @vsi: the vsi being adjusted
2254  **/
2255 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2256 {
2257         struct i40e_vsi_context ctxt;
2258         i40e_status ret;
2259
2260         if ((vsi->info.valid_sections &
2261              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2262             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2263              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2264                 return;  /* already disabled */
2265
2266         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2267         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2268                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2269
2270         ctxt.seid = vsi->seid;
2271         ctxt.info = vsi->info;
2272         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2273         if (ret) {
2274                 dev_info(&vsi->back->pdev->dev,
2275                          "update vlan stripping failed, err %s aq_err %s\n",
2276                          i40e_stat_str(&vsi->back->hw, ret),
2277                          i40e_aq_str(&vsi->back->hw,
2278                                      vsi->back->hw.aq.asq_last_status));
2279         }
2280 }
2281
2282 /**
2283  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2284  * @netdev: network interface to be adjusted
2285  * @features: netdev features to test if VLAN offload is enabled or not
2286  **/
2287 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2288 {
2289         struct i40e_netdev_priv *np = netdev_priv(netdev);
2290         struct i40e_vsi *vsi = np->vsi;
2291
2292         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2293                 i40e_vlan_stripping_enable(vsi);
2294         else
2295                 i40e_vlan_stripping_disable(vsi);
2296 }
2297
2298 /**
2299  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2300  * @vsi: the vsi being configured
2301  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2302  **/
2303 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2304 {
2305         struct i40e_mac_filter *f, *add_f;
2306         bool is_netdev, is_vf;
2307
2308         is_vf = (vsi->type == I40E_VSI_SRIOV);
2309         is_netdev = !!(vsi->netdev);
2310
2311         /* Locked once because all functions invoked below iterates list*/
2312         spin_lock_bh(&vsi->mac_filter_list_lock);
2313
2314         if (is_netdev) {
2315                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2316                                         is_vf, is_netdev);
2317                 if (!add_f) {
2318                         dev_info(&vsi->back->pdev->dev,
2319                                  "Could not add vlan filter %d for %pM\n",
2320                                  vid, vsi->netdev->dev_addr);
2321                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2322                         return -ENOMEM;
2323                 }
2324         }
2325
2326         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2327                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2328                 if (!add_f) {
2329                         dev_info(&vsi->back->pdev->dev,
2330                                  "Could not add vlan filter %d for %pM\n",
2331                                  vid, f->macaddr);
2332                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2333                         return -ENOMEM;
2334                 }
2335         }
2336
2337         /* Now if we add a vlan tag, make sure to check if it is the first
2338          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2339          * with 0, so we now accept untagged and specified tagged traffic
2340          * (and not any taged and untagged)
2341          */
2342         if (vid > 0) {
2343                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2344                                                   I40E_VLAN_ANY,
2345                                                   is_vf, is_netdev)) {
2346                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2347                                         I40E_VLAN_ANY, is_vf, is_netdev);
2348                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2349                                                 is_vf, is_netdev);
2350                         if (!add_f) {
2351                                 dev_info(&vsi->back->pdev->dev,
2352                                          "Could not add filter 0 for %pM\n",
2353                                          vsi->netdev->dev_addr);
2354                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2355                                 return -ENOMEM;
2356                         }
2357                 }
2358         }
2359
2360         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2361         if (vid > 0 && !vsi->info.pvid) {
2362                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2363                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2364                                               is_vf, is_netdev))
2365                                 continue;
2366                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2367                                         is_vf, is_netdev);
2368                         add_f = i40e_add_filter(vsi, f->macaddr,
2369                                                 0, is_vf, is_netdev);
2370                         if (!add_f) {
2371                                 dev_info(&vsi->back->pdev->dev,
2372                                          "Could not add filter 0 for %pM\n",
2373                                         f->macaddr);
2374                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2375                                 return -ENOMEM;
2376                         }
2377                 }
2378         }
2379
2380         /* Make sure to release before sync_vsi_filter because that
2381          * function will lock/unlock as necessary
2382          */
2383         spin_unlock_bh(&vsi->mac_filter_list_lock);
2384
2385         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2386             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2387                 return 0;
2388
2389         return i40e_sync_vsi_filters(vsi, false);
2390 }
2391
2392 /**
2393  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2394  * @vsi: the vsi being configured
2395  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2396  *
2397  * Return: 0 on success or negative otherwise
2398  **/
2399 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2400 {
2401         struct net_device *netdev = vsi->netdev;
2402         struct i40e_mac_filter *f, *add_f;
2403         bool is_vf, is_netdev;
2404         int filter_count = 0;
2405
2406         is_vf = (vsi->type == I40E_VSI_SRIOV);
2407         is_netdev = !!(netdev);
2408
2409         /* Locked once because all functions invoked below iterates list */
2410         spin_lock_bh(&vsi->mac_filter_list_lock);
2411
2412         if (is_netdev)
2413                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2414
2415         list_for_each_entry(f, &vsi->mac_filter_list, list)
2416                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2417
2418         /* go through all the filters for this VSI and if there is only
2419          * vid == 0 it means there are no other filters, so vid 0 must
2420          * be replaced with -1. This signifies that we should from now
2421          * on accept any traffic (with any tag present, or untagged)
2422          */
2423         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2424                 if (is_netdev) {
2425                         if (f->vlan &&
2426                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2427                                 filter_count++;
2428                 }
2429
2430                 if (f->vlan)
2431                         filter_count++;
2432         }
2433
2434         if (!filter_count && is_netdev) {
2435                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2436                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2437                                     is_vf, is_netdev);
2438                 if (!f) {
2439                         dev_info(&vsi->back->pdev->dev,
2440                                  "Could not add filter %d for %pM\n",
2441                                  I40E_VLAN_ANY, netdev->dev_addr);
2442                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2443                         return -ENOMEM;
2444                 }
2445         }
2446
2447         if (!filter_count) {
2448                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2449                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2450                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2451                                                 is_vf, is_netdev);
2452                         if (!add_f) {
2453                                 dev_info(&vsi->back->pdev->dev,
2454                                          "Could not add filter %d for %pM\n",
2455                                          I40E_VLAN_ANY, f->macaddr);
2456                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2457                                 return -ENOMEM;
2458                         }
2459                 }
2460         }
2461
2462         /* Make sure to release before sync_vsi_filter because that
2463          * function with lock/unlock as necessary
2464          */
2465         spin_unlock_bh(&vsi->mac_filter_list_lock);
2466
2467         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2468             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2469                 return 0;
2470
2471         return i40e_sync_vsi_filters(vsi, false);
2472 }
2473
2474 /**
2475  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2476  * @netdev: network interface to be adjusted
2477  * @vid: vlan id to be added
2478  *
2479  * net_device_ops implementation for adding vlan ids
2480  **/
2481 #ifdef I40E_FCOE
2482 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2483                          __always_unused __be16 proto, u16 vid)
2484 #else
2485 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2486                                 __always_unused __be16 proto, u16 vid)
2487 #endif
2488 {
2489         struct i40e_netdev_priv *np = netdev_priv(netdev);
2490         struct i40e_vsi *vsi = np->vsi;
2491         int ret = 0;
2492
2493         if (vid > 4095)
2494                 return -EINVAL;
2495
2496         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2497
2498         /* If the network stack called us with vid = 0 then
2499          * it is asking to receive priority tagged packets with
2500          * vlan id 0.  Our HW receives them by default when configured
2501          * to receive untagged packets so there is no need to add an
2502          * extra filter for vlan 0 tagged packets.
2503          */
2504         if (vid)
2505                 ret = i40e_vsi_add_vlan(vsi, vid);
2506
2507         if (!ret && (vid < VLAN_N_VID))
2508                 set_bit(vid, vsi->active_vlans);
2509
2510         return ret;
2511 }
2512
2513 /**
2514  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2515  * @netdev: network interface to be adjusted
2516  * @vid: vlan id to be removed
2517  *
2518  * net_device_ops implementation for removing vlan ids
2519  **/
2520 #ifdef I40E_FCOE
2521 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2522                           __always_unused __be16 proto, u16 vid)
2523 #else
2524 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2525                                  __always_unused __be16 proto, u16 vid)
2526 #endif
2527 {
2528         struct i40e_netdev_priv *np = netdev_priv(netdev);
2529         struct i40e_vsi *vsi = np->vsi;
2530
2531         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2532
2533         /* return code is ignored as there is nothing a user
2534          * can do about failure to remove and a log message was
2535          * already printed from the other function
2536          */
2537         i40e_vsi_kill_vlan(vsi, vid);
2538
2539         clear_bit(vid, vsi->active_vlans);
2540
2541         return 0;
2542 }
2543
2544 /**
2545  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2546  * @vsi: the vsi being brought back up
2547  **/
2548 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2549 {
2550         u16 vid;
2551
2552         if (!vsi->netdev)
2553                 return;
2554
2555         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2556
2557         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2558                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2559                                      vid);
2560 }
2561
2562 /**
2563  * i40e_vsi_add_pvid - Add pvid for the VSI
2564  * @vsi: the vsi being adjusted
2565  * @vid: the vlan id to set as a PVID
2566  **/
2567 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2568 {
2569         struct i40e_vsi_context ctxt;
2570         i40e_status ret;
2571
2572         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2573         vsi->info.pvid = cpu_to_le16(vid);
2574         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2575                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2576                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2577
2578         ctxt.seid = vsi->seid;
2579         ctxt.info = vsi->info;
2580         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2581         if (ret) {
2582                 dev_info(&vsi->back->pdev->dev,
2583                          "add pvid failed, err %s aq_err %s\n",
2584                          i40e_stat_str(&vsi->back->hw, ret),
2585                          i40e_aq_str(&vsi->back->hw,
2586                                      vsi->back->hw.aq.asq_last_status));
2587                 return -ENOENT;
2588         }
2589
2590         return 0;
2591 }
2592
2593 /**
2594  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2595  * @vsi: the vsi being adjusted
2596  *
2597  * Just use the vlan_rx_register() service to put it back to normal
2598  **/
2599 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2600 {
2601         i40e_vlan_stripping_disable(vsi);
2602
2603         vsi->info.pvid = 0;
2604 }
2605
2606 /**
2607  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2608  * @vsi: ptr to the VSI
2609  *
2610  * If this function returns with an error, then it's possible one or
2611  * more of the rings is populated (while the rest are not).  It is the
2612  * callers duty to clean those orphaned rings.
2613  *
2614  * Return 0 on success, negative on failure
2615  **/
2616 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2617 {
2618         int i, err = 0;
2619
2620         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2621                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2622
2623         return err;
2624 }
2625
2626 /**
2627  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2628  * @vsi: ptr to the VSI
2629  *
2630  * Free VSI's transmit software resources
2631  **/
2632 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2633 {
2634         int i;
2635
2636         if (!vsi->tx_rings)
2637                 return;
2638
2639         for (i = 0; i < vsi->num_queue_pairs; i++)
2640                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2641                         i40e_free_tx_resources(vsi->tx_rings[i]);
2642 }
2643
2644 /**
2645  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2646  * @vsi: ptr to the VSI
2647  *
2648  * If this function returns with an error, then it's possible one or
2649  * more of the rings is populated (while the rest are not).  It is the
2650  * callers duty to clean those orphaned rings.
2651  *
2652  * Return 0 on success, negative on failure
2653  **/
2654 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2655 {
2656         int i, err = 0;
2657
2658         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2659                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2660 #ifdef I40E_FCOE
2661         i40e_fcoe_setup_ddp_resources(vsi);
2662 #endif
2663         return err;
2664 }
2665
2666 /**
2667  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2668  * @vsi: ptr to the VSI
2669  *
2670  * Free all receive software resources
2671  **/
2672 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2673 {
2674         int i;
2675
2676         if (!vsi->rx_rings)
2677                 return;
2678
2679         for (i = 0; i < vsi->num_queue_pairs; i++)
2680                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2681                         i40e_free_rx_resources(vsi->rx_rings[i]);
2682 #ifdef I40E_FCOE
2683         i40e_fcoe_free_ddp_resources(vsi);
2684 #endif
2685 }
2686
2687 /**
2688  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2689  * @ring: The Tx ring to configure
2690  *
2691  * This enables/disables XPS for a given Tx descriptor ring
2692  * based on the TCs enabled for the VSI that ring belongs to.
2693  **/
2694 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2695 {
2696         struct i40e_vsi *vsi = ring->vsi;
2697         cpumask_var_t mask;
2698
2699         if (!ring->q_vector || !ring->netdev)
2700                 return;
2701
2702         /* Single TC mode enable XPS */
2703         if (vsi->tc_config.numtc <= 1) {
2704                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2705                         netif_set_xps_queue(ring->netdev,
2706                                             &ring->q_vector->affinity_mask,
2707                                             ring->queue_index);
2708         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2709                 /* Disable XPS to allow selection based on TC */
2710                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2711                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2712                 free_cpumask_var(mask);
2713         }
2714 }
2715
2716 /**
2717  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2718  * @ring: The Tx ring to configure
2719  *
2720  * Configure the Tx descriptor ring in the HMC context.
2721  **/
2722 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2723 {
2724         struct i40e_vsi *vsi = ring->vsi;
2725         u16 pf_q = vsi->base_queue + ring->queue_index;
2726         struct i40e_hw *hw = &vsi->back->hw;
2727         struct i40e_hmc_obj_txq tx_ctx;
2728         i40e_status err = 0;
2729         u32 qtx_ctl = 0;
2730
2731         /* some ATR related tx ring init */
2732         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2733                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2734                 ring->atr_count = 0;
2735         } else {
2736                 ring->atr_sample_rate = 0;
2737         }
2738
2739         /* configure XPS */
2740         i40e_config_xps_tx_ring(ring);
2741
2742         /* clear the context structure first */
2743         memset(&tx_ctx, 0, sizeof(tx_ctx));
2744
2745         tx_ctx.new_context = 1;
2746         tx_ctx.base = (ring->dma / 128);
2747         tx_ctx.qlen = ring->count;
2748         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2749                                                I40E_FLAG_FD_ATR_ENABLED));
2750 #ifdef I40E_FCOE
2751         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2752 #endif
2753         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2754         /* FDIR VSI tx ring can still use RS bit and writebacks */
2755         if (vsi->type != I40E_VSI_FDIR)
2756                 tx_ctx.head_wb_ena = 1;
2757         tx_ctx.head_wb_addr = ring->dma +
2758                               (ring->count * sizeof(struct i40e_tx_desc));
2759
2760         /* As part of VSI creation/update, FW allocates certain
2761          * Tx arbitration queue sets for each TC enabled for
2762          * the VSI. The FW returns the handles to these queue
2763          * sets as part of the response buffer to Add VSI,
2764          * Update VSI, etc. AQ commands. It is expected that
2765          * these queue set handles be associated with the Tx
2766          * queues by the driver as part of the TX queue context
2767          * initialization. This has to be done regardless of
2768          * DCB as by default everything is mapped to TC0.
2769          */
2770         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2771         tx_ctx.rdylist_act = 0;
2772
2773         /* clear the context in the HMC */
2774         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2775         if (err) {
2776                 dev_info(&vsi->back->pdev->dev,
2777                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2778                          ring->queue_index, pf_q, err);
2779                 return -ENOMEM;
2780         }
2781
2782         /* set the context in the HMC */
2783         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2784         if (err) {
2785                 dev_info(&vsi->back->pdev->dev,
2786                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2787                          ring->queue_index, pf_q, err);
2788                 return -ENOMEM;
2789         }
2790
2791         /* Now associate this queue with this PCI function */
2792         if (vsi->type == I40E_VSI_VMDQ2) {
2793                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2794                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2795                            I40E_QTX_CTL_VFVM_INDX_MASK;
2796         } else {
2797                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2798         }
2799
2800         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2801                     I40E_QTX_CTL_PF_INDX_MASK);
2802         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2803         i40e_flush(hw);
2804
2805         /* cache tail off for easier writes later */
2806         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2807
2808         return 0;
2809 }
2810
2811 /**
2812  * i40e_configure_rx_ring - Configure a receive ring context
2813  * @ring: The Rx ring to configure
2814  *
2815  * Configure the Rx descriptor ring in the HMC context.
2816  **/
2817 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2818 {
2819         struct i40e_vsi *vsi = ring->vsi;
2820         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2821         u16 pf_q = vsi->base_queue + ring->queue_index;
2822         struct i40e_hw *hw = &vsi->back->hw;
2823         struct i40e_hmc_obj_rxq rx_ctx;
2824         i40e_status err = 0;
2825
2826         ring->state = 0;
2827
2828         /* clear the context structure first */
2829         memset(&rx_ctx, 0, sizeof(rx_ctx));
2830
2831         ring->rx_buf_len = vsi->rx_buf_len;
2832         ring->rx_hdr_len = vsi->rx_hdr_len;
2833
2834         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2835         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2836
2837         rx_ctx.base = (ring->dma / 128);
2838         rx_ctx.qlen = ring->count;
2839
2840         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2841                 set_ring_16byte_desc_enabled(ring);
2842                 rx_ctx.dsize = 0;
2843         } else {
2844                 rx_ctx.dsize = 1;
2845         }
2846
2847         rx_ctx.dtype = vsi->dtype;
2848         if (vsi->dtype) {
2849                 set_ring_ps_enabled(ring);
2850                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2851                                   I40E_RX_SPLIT_IP      |
2852                                   I40E_RX_SPLIT_TCP_UDP |
2853                                   I40E_RX_SPLIT_SCTP;
2854         } else {
2855                 rx_ctx.hsplit_0 = 0;
2856         }
2857
2858         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2859                                   (chain_len * ring->rx_buf_len));
2860         if (hw->revision_id == 0)
2861                 rx_ctx.lrxqthresh = 0;
2862         else
2863                 rx_ctx.lrxqthresh = 2;
2864         rx_ctx.crcstrip = 1;
2865         rx_ctx.l2tsel = 1;
2866         /* this controls whether VLAN is stripped from inner headers */
2867         rx_ctx.showiv = 0;
2868 #ifdef I40E_FCOE
2869         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2870 #endif
2871         /* set the prefena field to 1 because the manual says to */
2872         rx_ctx.prefena = 1;
2873
2874         /* clear the context in the HMC */
2875         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2876         if (err) {
2877                 dev_info(&vsi->back->pdev->dev,
2878                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2879                          ring->queue_index, pf_q, err);
2880                 return -ENOMEM;
2881         }
2882
2883         /* set the context in the HMC */
2884         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2885         if (err) {
2886                 dev_info(&vsi->back->pdev->dev,
2887                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2888                          ring->queue_index, pf_q, err);
2889                 return -ENOMEM;
2890         }
2891
2892         /* cache tail for quicker writes, and clear the reg before use */
2893         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2894         writel(0, ring->tail);
2895
2896         if (ring_is_ps_enabled(ring)) {
2897                 i40e_alloc_rx_headers(ring);
2898                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2899         } else {
2900                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2901         }
2902
2903         return 0;
2904 }
2905
2906 /**
2907  * i40e_vsi_configure_tx - Configure the VSI for Tx
2908  * @vsi: VSI structure describing this set of rings and resources
2909  *
2910  * Configure the Tx VSI for operation.
2911  **/
2912 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2913 {
2914         int err = 0;
2915         u16 i;
2916
2917         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2918                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2919
2920         return err;
2921 }
2922
2923 /**
2924  * i40e_vsi_configure_rx - Configure the VSI for Rx
2925  * @vsi: the VSI being configured
2926  *
2927  * Configure the Rx VSI for operation.
2928  **/
2929 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2930 {
2931         int err = 0;
2932         u16 i;
2933
2934         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2935                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2936                                + ETH_FCS_LEN + VLAN_HLEN;
2937         else
2938                 vsi->max_frame = I40E_RXBUFFER_2048;
2939
2940         /* figure out correct receive buffer length */
2941         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2942                                     I40E_FLAG_RX_PS_ENABLED)) {
2943         case I40E_FLAG_RX_1BUF_ENABLED:
2944                 vsi->rx_hdr_len = 0;
2945                 vsi->rx_buf_len = vsi->max_frame;
2946                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2947                 break;
2948         case I40E_FLAG_RX_PS_ENABLED:
2949                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2950                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2951                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2952                 break;
2953         default:
2954                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2955                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2956                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2957                 break;
2958         }
2959
2960 #ifdef I40E_FCOE
2961         /* setup rx buffer for FCoE */
2962         if ((vsi->type == I40E_VSI_FCOE) &&
2963             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2964                 vsi->rx_hdr_len = 0;
2965                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2966                 vsi->max_frame = I40E_RXBUFFER_3072;
2967                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2968         }
2969
2970 #endif /* I40E_FCOE */
2971         /* round up for the chip's needs */
2972         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2973                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2974         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2975                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2976
2977         /* set up individual rings */
2978         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2979                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2980
2981         return err;
2982 }
2983
2984 /**
2985  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2986  * @vsi: ptr to the VSI
2987  **/
2988 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2989 {
2990         struct i40e_ring *tx_ring, *rx_ring;
2991         u16 qoffset, qcount;
2992         int i, n;
2993
2994         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2995                 /* Reset the TC information */
2996                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2997                         rx_ring = vsi->rx_rings[i];
2998                         tx_ring = vsi->tx_rings[i];
2999                         rx_ring->dcb_tc = 0;
3000                         tx_ring->dcb_tc = 0;
3001                 }
3002         }
3003
3004         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3005                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3006                         continue;
3007
3008                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3009                 qcount = vsi->tc_config.tc_info[n].qcount;
3010                 for (i = qoffset; i < (qoffset + qcount); i++) {
3011                         rx_ring = vsi->rx_rings[i];
3012                         tx_ring = vsi->tx_rings[i];
3013                         rx_ring->dcb_tc = n;
3014                         tx_ring->dcb_tc = n;
3015                 }
3016         }
3017 }
3018
3019 /**
3020  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3021  * @vsi: ptr to the VSI
3022  **/
3023 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3024 {
3025         if (vsi->netdev)
3026                 i40e_set_rx_mode(vsi->netdev);
3027 }
3028
3029 /**
3030  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3031  * @vsi: Pointer to the targeted VSI
3032  *
3033  * This function replays the hlist on the hw where all the SB Flow Director
3034  * filters were saved.
3035  **/
3036 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3037 {
3038         struct i40e_fdir_filter *filter;
3039         struct i40e_pf *pf = vsi->back;
3040         struct hlist_node *node;
3041
3042         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3043                 return;
3044
3045         hlist_for_each_entry_safe(filter, node,
3046                                   &pf->fdir_filter_list, fdir_node) {
3047                 i40e_add_del_fdir(vsi, filter, true);
3048         }
3049 }
3050
3051 /**
3052  * i40e_vsi_configure - Set up the VSI for action
3053  * @vsi: the VSI being configured
3054  **/
3055 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3056 {
3057         int err;
3058
3059         i40e_set_vsi_rx_mode(vsi);
3060         i40e_restore_vlan(vsi);
3061         i40e_vsi_config_dcb_rings(vsi);
3062         err = i40e_vsi_configure_tx(vsi);
3063         if (!err)
3064                 err = i40e_vsi_configure_rx(vsi);
3065
3066         return err;
3067 }
3068
3069 /**
3070  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3071  * @vsi: the VSI being configured
3072  **/
3073 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3074 {
3075         struct i40e_pf *pf = vsi->back;
3076         struct i40e_hw *hw = &pf->hw;
3077         u16 vector;
3078         int i, q;
3079         u32 qp;
3080
3081         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3082          * and PFINT_LNKLSTn registers, e.g.:
3083          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3084          */
3085         qp = vsi->base_queue;
3086         vector = vsi->base_vector;
3087         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3088                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3089
3090                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3091                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3092                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3093                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3094                      q_vector->rx.itr);
3095                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3096                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3097                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3098                      q_vector->tx.itr);
3099                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3100                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3101
3102                 /* Linked list for the queuepairs assigned to this vector */
3103                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3104                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3105                         u32 val;
3106
3107                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3108                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3109                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3110                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3111                               (I40E_QUEUE_TYPE_TX
3112                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3113
3114                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3115
3116                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3117                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3118                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3119                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3120                               (I40E_QUEUE_TYPE_RX
3121                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3122
3123                         /* Terminate the linked list */
3124                         if (q == (q_vector->num_ringpairs - 1))
3125                                 val |= (I40E_QUEUE_END_OF_LIST
3126                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3127
3128                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3129                         qp++;
3130                 }
3131         }
3132
3133         i40e_flush(hw);
3134 }
3135
3136 /**
3137  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3138  * @hw: ptr to the hardware info
3139  **/
3140 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3141 {
3142         struct i40e_hw *hw = &pf->hw;
3143         u32 val;
3144
3145         /* clear things first */
3146         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3147         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3148
3149         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3150               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3151               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3152               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3153               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3154               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3155               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3156               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3157
3158         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3159                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3160
3161         if (pf->flags & I40E_FLAG_PTP)
3162                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3163
3164         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3165
3166         /* SW_ITR_IDX = 0, but don't change INTENA */
3167         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3168                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3169
3170         /* OTHER_ITR_IDX = 0 */
3171         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3172 }
3173
3174 /**
3175  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3176  * @vsi: the VSI being configured
3177  **/
3178 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3179 {
3180         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3181         struct i40e_pf *pf = vsi->back;
3182         struct i40e_hw *hw = &pf->hw;
3183         u32 val;
3184
3185         /* set the ITR configuration */
3186         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3187         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3188         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3189         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3190         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3191         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3192         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3193
3194         i40e_enable_misc_int_causes(pf);
3195
3196         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3197         wr32(hw, I40E_PFINT_LNKLST0, 0);
3198
3199         /* Associate the queue pair to the vector and enable the queue int */
3200         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3201               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3202               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3203
3204         wr32(hw, I40E_QINT_RQCTL(0), val);
3205
3206         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3207               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3208               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3209
3210         wr32(hw, I40E_QINT_TQCTL(0), val);
3211         i40e_flush(hw);
3212 }
3213
3214 /**
3215  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3216  * @pf: board private structure
3217  **/
3218 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3219 {
3220         struct i40e_hw *hw = &pf->hw;
3221
3222         wr32(hw, I40E_PFINT_DYN_CTL0,
3223              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3224         i40e_flush(hw);
3225 }
3226
3227 /**
3228  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3229  * @pf: board private structure
3230  **/
3231 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3232 {
3233         struct i40e_hw *hw = &pf->hw;
3234         u32 val;
3235
3236         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3237               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3238               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3239
3240         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3241         i40e_flush(hw);
3242 }
3243
3244 /**
3245  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3246  * @vsi: pointer to a vsi
3247  * @vector: disable a particular Hw Interrupt vector
3248  **/
3249 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3250 {
3251         struct i40e_pf *pf = vsi->back;
3252         struct i40e_hw *hw = &pf->hw;
3253         u32 val;
3254
3255         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3256         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3257         i40e_flush(hw);
3258 }
3259
3260 /**
3261  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3262  * @irq: interrupt number
3263  * @data: pointer to a q_vector
3264  **/
3265 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3266 {
3267         struct i40e_q_vector *q_vector = data;
3268
3269         if (!q_vector->tx.ring && !q_vector->rx.ring)
3270                 return IRQ_HANDLED;
3271
3272         napi_schedule_irqoff(&q_vector->napi);
3273
3274         return IRQ_HANDLED;
3275 }
3276
3277 /**
3278  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3279  * @vsi: the VSI being configured
3280  * @basename: name for the vector
3281  *
3282  * Allocates MSI-X vectors and requests interrupts from the kernel.
3283  **/
3284 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3285 {
3286         int q_vectors = vsi->num_q_vectors;
3287         struct i40e_pf *pf = vsi->back;
3288         int base = vsi->base_vector;
3289         int rx_int_idx = 0;
3290         int tx_int_idx = 0;
3291         int vector, err;
3292
3293         for (vector = 0; vector < q_vectors; vector++) {
3294                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3295
3296                 if (q_vector->tx.ring && q_vector->rx.ring) {
3297                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3298                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3299                         tx_int_idx++;
3300                 } else if (q_vector->rx.ring) {
3301                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3302                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3303                 } else if (q_vector->tx.ring) {
3304                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3305                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3306                 } else {
3307                         /* skip this unused q_vector */
3308                         continue;
3309                 }
3310                 err = request_irq(pf->msix_entries[base + vector].vector,
3311                                   vsi->irq_handler,
3312                                   0,
3313                                   q_vector->name,
3314                                   q_vector);
3315                 if (err) {
3316                         dev_info(&pf->pdev->dev,
3317                                  "MSIX request_irq failed, error: %d\n", err);
3318                         goto free_queue_irqs;
3319                 }
3320                 /* assign the mask for this irq */
3321                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3322                                       &q_vector->affinity_mask);
3323         }
3324
3325         vsi->irqs_ready = true;
3326         return 0;
3327
3328 free_queue_irqs:
3329         while (vector) {
3330                 vector--;
3331                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3332                                       NULL);
3333                 free_irq(pf->msix_entries[base + vector].vector,
3334                          &(vsi->q_vectors[vector]));
3335         }
3336         return err;
3337 }
3338
3339 /**
3340  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3341  * @vsi: the VSI being un-configured
3342  **/
3343 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3344 {
3345         struct i40e_pf *pf = vsi->back;
3346         struct i40e_hw *hw = &pf->hw;
3347         int base = vsi->base_vector;
3348         int i;
3349
3350         for (i = 0; i < vsi->num_queue_pairs; i++) {
3351                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3352                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3353         }
3354
3355         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3356                 for (i = vsi->base_vector;
3357                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3358                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3359
3360                 i40e_flush(hw);
3361                 for (i = 0; i < vsi->num_q_vectors; i++)
3362                         synchronize_irq(pf->msix_entries[i + base].vector);
3363         } else {
3364                 /* Legacy and MSI mode - this stops all interrupt handling */
3365                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3366                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3367                 i40e_flush(hw);
3368                 synchronize_irq(pf->pdev->irq);
3369         }
3370 }
3371
3372 /**
3373  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3374  * @vsi: the VSI being configured
3375  **/
3376 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3377 {
3378         struct i40e_pf *pf = vsi->back;
3379         int i;
3380
3381         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3382                 for (i = 0; i < vsi->num_q_vectors; i++)
3383                         i40e_irq_dynamic_enable(vsi, i);
3384         } else {
3385                 i40e_irq_dynamic_enable_icr0(pf);
3386         }
3387
3388         i40e_flush(&pf->hw);
3389         return 0;
3390 }
3391
3392 /**
3393  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3394  * @pf: board private structure
3395  **/
3396 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3397 {
3398         /* Disable ICR 0 */
3399         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3400         i40e_flush(&pf->hw);
3401 }
3402
3403 /**
3404  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3405  * @irq: interrupt number
3406  * @data: pointer to a q_vector
3407  *
3408  * This is the handler used for all MSI/Legacy interrupts, and deals
3409  * with both queue and non-queue interrupts.  This is also used in
3410  * MSIX mode to handle the non-queue interrupts.
3411  **/
3412 static irqreturn_t i40e_intr(int irq, void *data)
3413 {
3414         struct i40e_pf *pf = (struct i40e_pf *)data;
3415         struct i40e_hw *hw = &pf->hw;
3416         irqreturn_t ret = IRQ_NONE;
3417         u32 icr0, icr0_remaining;
3418         u32 val, ena_mask;
3419
3420         icr0 = rd32(hw, I40E_PFINT_ICR0);
3421         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3422
3423         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3424         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3425                 goto enable_intr;
3426
3427         /* if interrupt but no bits showing, must be SWINT */
3428         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3429             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3430                 pf->sw_int_count++;
3431
3432         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3433             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3434                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3435                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3436                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3437         }
3438
3439         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3440         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3441                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3442                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3443
3444                 /* temporarily disable queue cause for NAPI processing */
3445                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3446
3447                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3448                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3449
3450                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3451                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3452                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3453
3454                 if (!test_bit(__I40E_DOWN, &pf->state))
3455                         napi_schedule_irqoff(&q_vector->napi);
3456         }
3457
3458         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3459                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3460                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3461         }
3462
3463         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3464                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3465                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3466         }
3467
3468         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3469                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3470                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3471         }
3472
3473         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3474                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3475                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3476                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3477                 val = rd32(hw, I40E_GLGEN_RSTAT);
3478                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3479                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3480                 if (val == I40E_RESET_CORER) {
3481                         pf->corer_count++;
3482                 } else if (val == I40E_RESET_GLOBR) {
3483                         pf->globr_count++;
3484                 } else if (val == I40E_RESET_EMPR) {
3485                         pf->empr_count++;
3486                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3487                 }
3488         }
3489
3490         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3491                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3492                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3493                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3494                          rd32(hw, I40E_PFHMC_ERRORINFO),
3495                          rd32(hw, I40E_PFHMC_ERRORDATA));
3496         }
3497
3498         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3499                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3500
3501                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3502                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3503                         i40e_ptp_tx_hwtstamp(pf);
3504                 }
3505         }
3506
3507         /* If a critical error is pending we have no choice but to reset the
3508          * device.
3509          * Report and mask out any remaining unexpected interrupts.
3510          */
3511         icr0_remaining = icr0 & ena_mask;
3512         if (icr0_remaining) {
3513                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3514                          icr0_remaining);
3515                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3516                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3517                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3518                         dev_info(&pf->pdev->dev, "device will be reset\n");
3519                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3520                         i40e_service_event_schedule(pf);
3521                 }
3522                 ena_mask &= ~icr0_remaining;
3523         }
3524         ret = IRQ_HANDLED;
3525
3526 enable_intr:
3527         /* re-enable interrupt causes */
3528         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3529         if (!test_bit(__I40E_DOWN, &pf->state)) {
3530                 i40e_service_event_schedule(pf);
3531                 i40e_irq_dynamic_enable_icr0(pf);
3532         }
3533
3534         return ret;
3535 }
3536
3537 /**
3538  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3539  * @tx_ring:  tx ring to clean
3540  * @budget:   how many cleans we're allowed
3541  *
3542  * Returns true if there's any budget left (e.g. the clean is finished)
3543  **/
3544 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3545 {
3546         struct i40e_vsi *vsi = tx_ring->vsi;
3547         u16 i = tx_ring->next_to_clean;
3548         struct i40e_tx_buffer *tx_buf;
3549         struct i40e_tx_desc *tx_desc;
3550
3551         tx_buf = &tx_ring->tx_bi[i];
3552         tx_desc = I40E_TX_DESC(tx_ring, i);
3553         i -= tx_ring->count;
3554
3555         do {
3556                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3557
3558                 /* if next_to_watch is not set then there is no work pending */
3559                 if (!eop_desc)
3560                         break;
3561
3562                 /* prevent any other reads prior to eop_desc */
3563                 read_barrier_depends();
3564
3565                 /* if the descriptor isn't done, no work yet to do */
3566                 if (!(eop_desc->cmd_type_offset_bsz &
3567                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3568                         break;
3569
3570                 /* clear next_to_watch to prevent false hangs */
3571                 tx_buf->next_to_watch = NULL;
3572
3573                 tx_desc->buffer_addr = 0;
3574                 tx_desc->cmd_type_offset_bsz = 0;
3575                 /* move past filter desc */
3576                 tx_buf++;
3577                 tx_desc++;
3578                 i++;
3579                 if (unlikely(!i)) {
3580                         i -= tx_ring->count;
3581                         tx_buf = tx_ring->tx_bi;
3582                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3583                 }
3584                 /* unmap skb header data */
3585                 dma_unmap_single(tx_ring->dev,
3586                                  dma_unmap_addr(tx_buf, dma),
3587                                  dma_unmap_len(tx_buf, len),
3588                                  DMA_TO_DEVICE);
3589                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3590                         kfree(tx_buf->raw_buf);
3591
3592                 tx_buf->raw_buf = NULL;
3593                 tx_buf->tx_flags = 0;
3594                 tx_buf->next_to_watch = NULL;
3595                 dma_unmap_len_set(tx_buf, len, 0);
3596                 tx_desc->buffer_addr = 0;
3597                 tx_desc->cmd_type_offset_bsz = 0;
3598
3599                 /* move us past the eop_desc for start of next FD desc */
3600                 tx_buf++;
3601                 tx_desc++;
3602                 i++;
3603                 if (unlikely(!i)) {
3604                         i -= tx_ring->count;
3605                         tx_buf = tx_ring->tx_bi;
3606                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3607                 }
3608
3609                 /* update budget accounting */
3610                 budget--;
3611         } while (likely(budget));
3612
3613         i += tx_ring->count;
3614         tx_ring->next_to_clean = i;
3615
3616         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3617                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3618
3619         return budget > 0;
3620 }
3621
3622 /**
3623  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3624  * @irq: interrupt number
3625  * @data: pointer to a q_vector
3626  **/
3627 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3628 {
3629         struct i40e_q_vector *q_vector = data;
3630         struct i40e_vsi *vsi;
3631
3632         if (!q_vector->tx.ring)
3633                 return IRQ_HANDLED;
3634
3635         vsi = q_vector->tx.ring->vsi;
3636         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3637
3638         return IRQ_HANDLED;
3639 }
3640
3641 /**
3642  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3643  * @vsi: the VSI being configured
3644  * @v_idx: vector index
3645  * @qp_idx: queue pair index
3646  **/
3647 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3648 {
3649         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3650         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3651         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3652
3653         tx_ring->q_vector = q_vector;
3654         tx_ring->next = q_vector->tx.ring;
3655         q_vector->tx.ring = tx_ring;
3656         q_vector->tx.count++;
3657
3658         rx_ring->q_vector = q_vector;
3659         rx_ring->next = q_vector->rx.ring;
3660         q_vector->rx.ring = rx_ring;
3661         q_vector->rx.count++;
3662 }
3663
3664 /**
3665  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3666  * @vsi: the VSI being configured
3667  *
3668  * This function maps descriptor rings to the queue-specific vectors
3669  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3670  * one vector per queue pair, but on a constrained vector budget, we
3671  * group the queue pairs as "efficiently" as possible.
3672  **/
3673 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3674 {
3675         int qp_remaining = vsi->num_queue_pairs;
3676         int q_vectors = vsi->num_q_vectors;
3677         int num_ringpairs;
3678         int v_start = 0;
3679         int qp_idx = 0;
3680
3681         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3682          * group them so there are multiple queues per vector.
3683          * It is also important to go through all the vectors available to be
3684          * sure that if we don't use all the vectors, that the remaining vectors
3685          * are cleared. This is especially important when decreasing the
3686          * number of queues in use.
3687          */
3688         for (; v_start < q_vectors; v_start++) {
3689                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3690
3691                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3692
3693                 q_vector->num_ringpairs = num_ringpairs;
3694
3695                 q_vector->rx.count = 0;
3696                 q_vector->tx.count = 0;
3697                 q_vector->rx.ring = NULL;
3698                 q_vector->tx.ring = NULL;
3699
3700                 while (num_ringpairs--) {
3701                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3702                         qp_idx++;
3703                         qp_remaining--;
3704                 }
3705         }
3706 }
3707
3708 /**
3709  * i40e_vsi_request_irq - Request IRQ from the OS
3710  * @vsi: the VSI being configured
3711  * @basename: name for the vector
3712  **/
3713 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3714 {
3715         struct i40e_pf *pf = vsi->back;
3716         int err;
3717
3718         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3719                 err = i40e_vsi_request_irq_msix(vsi, basename);
3720         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3721                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3722                                   pf->int_name, pf);
3723         else
3724                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3725                                   pf->int_name, pf);
3726
3727         if (err)
3728                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3729
3730         return err;
3731 }
3732
3733 #ifdef CONFIG_NET_POLL_CONTROLLER
3734 /**
3735  * i40e_netpoll - A Polling 'interrupt'handler
3736  * @netdev: network interface device structure
3737  *
3738  * This is used by netconsole to send skbs without having to re-enable
3739  * interrupts.  It's not called while the normal interrupt routine is executing.
3740  **/
3741 #ifdef I40E_FCOE
3742 void i40e_netpoll(struct net_device *netdev)
3743 #else
3744 static void i40e_netpoll(struct net_device *netdev)
3745 #endif
3746 {
3747         struct i40e_netdev_priv *np = netdev_priv(netdev);
3748         struct i40e_vsi *vsi = np->vsi;
3749         struct i40e_pf *pf = vsi->back;
3750         int i;
3751
3752         /* if interface is down do nothing */
3753         if (test_bit(__I40E_DOWN, &vsi->state))
3754                 return;
3755
3756         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3757                 for (i = 0; i < vsi->num_q_vectors; i++)
3758                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3759         } else {
3760                 i40e_intr(pf->pdev->irq, netdev);
3761         }
3762 }
3763 #endif
3764
3765 /**
3766  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3767  * @pf: the PF being configured
3768  * @pf_q: the PF queue
3769  * @enable: enable or disable state of the queue
3770  *
3771  * This routine will wait for the given Tx queue of the PF to reach the
3772  * enabled or disabled state.
3773  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3774  * multiple retries; else will return 0 in case of success.
3775  **/
3776 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3777 {
3778         int i;
3779         u32 tx_reg;
3780
3781         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3782                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3783                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3784                         break;
3785
3786                 usleep_range(10, 20);
3787         }
3788         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3789                 return -ETIMEDOUT;
3790
3791         return 0;
3792 }
3793
3794 /**
3795  * i40e_vsi_control_tx - Start or stop a VSI's rings
3796  * @vsi: the VSI being configured
3797  * @enable: start or stop the rings
3798  **/
3799 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3800 {
3801         struct i40e_pf *pf = vsi->back;
3802         struct i40e_hw *hw = &pf->hw;
3803         int i, j, pf_q, ret = 0;
3804         u32 tx_reg;
3805
3806         pf_q = vsi->base_queue;
3807         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3808
3809                 /* warn the TX unit of coming changes */
3810                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3811                 if (!enable)
3812                         usleep_range(10, 20);
3813
3814                 for (j = 0; j < 50; j++) {
3815                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3816                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3817                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3818                                 break;
3819                         usleep_range(1000, 2000);
3820                 }
3821                 /* Skip if the queue is already in the requested state */
3822                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3823                         continue;
3824
3825                 /* turn on/off the queue */
3826                 if (enable) {
3827                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3828                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3829                 } else {
3830                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3831                 }
3832
3833                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3834                 /* No waiting for the Tx queue to disable */
3835                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3836                         continue;
3837
3838                 /* wait for the change to finish */
3839                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3840                 if (ret) {
3841                         dev_info(&pf->pdev->dev,
3842                                  "VSI seid %d Tx ring %d %sable timeout\n",
3843                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3844                         break;
3845                 }
3846         }
3847
3848         if (hw->revision_id == 0)
3849                 mdelay(50);
3850         return ret;
3851 }
3852
3853 /**
3854  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3855  * @pf: the PF being configured
3856  * @pf_q: the PF queue
3857  * @enable: enable or disable state of the queue
3858  *
3859  * This routine will wait for the given Rx queue of the PF to reach the
3860  * enabled or disabled state.
3861  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3862  * multiple retries; else will return 0 in case of success.
3863  **/
3864 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3865 {
3866         int i;
3867         u32 rx_reg;
3868
3869         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3870                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3871                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3872                         break;
3873
3874                 usleep_range(10, 20);
3875         }
3876         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3877                 return -ETIMEDOUT;
3878
3879         return 0;
3880 }
3881
3882 /**
3883  * i40e_vsi_control_rx - Start or stop a VSI's rings
3884  * @vsi: the VSI being configured
3885  * @enable: start or stop the rings
3886  **/
3887 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3888 {
3889         struct i40e_pf *pf = vsi->back;
3890         struct i40e_hw *hw = &pf->hw;
3891         int i, j, pf_q, ret = 0;
3892         u32 rx_reg;
3893
3894         pf_q = vsi->base_queue;
3895         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3896                 for (j = 0; j < 50; j++) {
3897                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3898                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3899                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3900                                 break;
3901                         usleep_range(1000, 2000);
3902                 }
3903
3904                 /* Skip if the queue is already in the requested state */
3905                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3906                         continue;
3907
3908                 /* turn on/off the queue */
3909                 if (enable)
3910                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3911                 else
3912                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3913                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3914
3915                 /* wait for the change to finish */
3916                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3917                 if (ret) {
3918                         dev_info(&pf->pdev->dev,
3919                                  "VSI seid %d Rx ring %d %sable timeout\n",
3920                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3921                         break;
3922                 }
3923         }
3924
3925         return ret;
3926 }
3927
3928 /**
3929  * i40e_vsi_control_rings - Start or stop a VSI's rings
3930  * @vsi: the VSI being configured
3931  * @enable: start or stop the rings
3932  **/
3933 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3934 {
3935         int ret = 0;
3936
3937         /* do rx first for enable and last for disable */
3938         if (request) {
3939                 ret = i40e_vsi_control_rx(vsi, request);
3940                 if (ret)
3941                         return ret;
3942                 ret = i40e_vsi_control_tx(vsi, request);
3943         } else {
3944                 /* Ignore return value, we need to shutdown whatever we can */
3945                 i40e_vsi_control_tx(vsi, request);
3946                 i40e_vsi_control_rx(vsi, request);
3947         }
3948
3949         return ret;
3950 }
3951
3952 /**
3953  * i40e_vsi_free_irq - Free the irq association with the OS
3954  * @vsi: the VSI being configured
3955  **/
3956 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3957 {
3958         struct i40e_pf *pf = vsi->back;
3959         struct i40e_hw *hw = &pf->hw;
3960         int base = vsi->base_vector;
3961         u32 val, qp;
3962         int i;
3963
3964         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3965                 if (!vsi->q_vectors)
3966                         return;
3967
3968                 if (!vsi->irqs_ready)
3969                         return;
3970
3971                 vsi->irqs_ready = false;
3972                 for (i = 0; i < vsi->num_q_vectors; i++) {
3973                         u16 vector = i + base;
3974
3975                         /* free only the irqs that were actually requested */
3976                         if (!vsi->q_vectors[i] ||
3977                             !vsi->q_vectors[i]->num_ringpairs)
3978                                 continue;
3979
3980                         /* clear the affinity_mask in the IRQ descriptor */
3981                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3982                                               NULL);
3983                         free_irq(pf->msix_entries[vector].vector,
3984                                  vsi->q_vectors[i]);
3985
3986                         /* Tear down the interrupt queue link list
3987                          *
3988                          * We know that they come in pairs and always
3989                          * the Rx first, then the Tx.  To clear the
3990                          * link list, stick the EOL value into the
3991                          * next_q field of the registers.
3992                          */
3993                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3994                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3995                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3996                         val |= I40E_QUEUE_END_OF_LIST
3997                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3998                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3999
4000                         while (qp != I40E_QUEUE_END_OF_LIST) {
4001                                 u32 next;
4002
4003                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4004
4005                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4006                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4007                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4008                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4009
4010                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4011                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4012
4013                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4014
4015                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4016
4017                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4018                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4019
4020                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4021                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4022                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4023                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4024
4025                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4026                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4027
4028                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4029                                 qp = next;
4030                         }
4031                 }
4032         } else {
4033                 free_irq(pf->pdev->irq, pf);
4034
4035                 val = rd32(hw, I40E_PFINT_LNKLST0);
4036                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4037                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4038                 val |= I40E_QUEUE_END_OF_LIST
4039                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4040                 wr32(hw, I40E_PFINT_LNKLST0, val);
4041
4042                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4043                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4044                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4045                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4046                          I40E_QINT_RQCTL_INTEVENT_MASK);
4047
4048                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4049                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4050
4051                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4052
4053                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4054
4055                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4056                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4057                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4058                          I40E_QINT_TQCTL_INTEVENT_MASK);
4059
4060                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4061                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4062
4063                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4064         }
4065 }
4066
4067 /**
4068  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4069  * @vsi: the VSI being configured
4070  * @v_idx: Index of vector to be freed
4071  *
4072  * This function frees the memory allocated to the q_vector.  In addition if
4073  * NAPI is enabled it will delete any references to the NAPI struct prior
4074  * to freeing the q_vector.
4075  **/
4076 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4077 {
4078         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4079         struct i40e_ring *ring;
4080
4081         if (!q_vector)
4082                 return;
4083
4084         /* disassociate q_vector from rings */
4085         i40e_for_each_ring(ring, q_vector->tx)
4086                 ring->q_vector = NULL;
4087
4088         i40e_for_each_ring(ring, q_vector->rx)
4089                 ring->q_vector = NULL;
4090
4091         /* only VSI w/ an associated netdev is set up w/ NAPI */
4092         if (vsi->netdev)
4093                 netif_napi_del(&q_vector->napi);
4094
4095         vsi->q_vectors[v_idx] = NULL;
4096
4097         kfree_rcu(q_vector, rcu);
4098 }
4099
4100 /**
4101  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4102  * @vsi: the VSI being un-configured
4103  *
4104  * This frees the memory allocated to the q_vectors and
4105  * deletes references to the NAPI struct.
4106  **/
4107 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4108 {
4109         int v_idx;
4110
4111         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4112                 i40e_free_q_vector(vsi, v_idx);
4113 }
4114
4115 /**
4116  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4117  * @pf: board private structure
4118  **/
4119 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4120 {
4121         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4122         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4123                 pci_disable_msix(pf->pdev);
4124                 kfree(pf->msix_entries);
4125                 pf->msix_entries = NULL;
4126                 kfree(pf->irq_pile);
4127                 pf->irq_pile = NULL;
4128         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4129                 pci_disable_msi(pf->pdev);
4130         }
4131         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4132 }
4133
4134 /**
4135  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4136  * @pf: board private structure
4137  *
4138  * We go through and clear interrupt specific resources and reset the structure
4139  * to pre-load conditions
4140  **/
4141 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4142 {
4143         int i;
4144
4145         i40e_stop_misc_vector(pf);
4146         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4147                 synchronize_irq(pf->msix_entries[0].vector);
4148                 free_irq(pf->msix_entries[0].vector, pf);
4149         }
4150
4151         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4152         for (i = 0; i < pf->num_alloc_vsi; i++)
4153                 if (pf->vsi[i])
4154                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4155         i40e_reset_interrupt_capability(pf);
4156 }
4157
4158 /**
4159  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4160  * @vsi: the VSI being configured
4161  **/
4162 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4163 {
4164         int q_idx;
4165
4166         if (!vsi->netdev)
4167                 return;
4168
4169         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4170                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4171 }
4172
4173 /**
4174  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4175  * @vsi: the VSI being configured
4176  **/
4177 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4178 {
4179         int q_idx;
4180
4181         if (!vsi->netdev)
4182                 return;
4183
4184         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4185                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4186 }
4187
4188 /**
4189  * i40e_vsi_close - Shut down a VSI
4190  * @vsi: the vsi to be quelled
4191  **/
4192 static void i40e_vsi_close(struct i40e_vsi *vsi)
4193 {
4194         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4195                 i40e_down(vsi);
4196         i40e_vsi_free_irq(vsi);
4197         i40e_vsi_free_tx_resources(vsi);
4198         i40e_vsi_free_rx_resources(vsi);
4199         vsi->current_netdev_flags = 0;
4200 }
4201
4202 /**
4203  * i40e_quiesce_vsi - Pause a given VSI
4204  * @vsi: the VSI being paused
4205  **/
4206 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4207 {
4208         if (test_bit(__I40E_DOWN, &vsi->state))
4209                 return;
4210
4211         /* No need to disable FCoE VSI when Tx suspended */
4212         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4213             vsi->type == I40E_VSI_FCOE) {
4214                 dev_dbg(&vsi->back->pdev->dev,
4215                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4216                 return;
4217         }
4218
4219         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4220         if (vsi->netdev && netif_running(vsi->netdev))
4221                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4222         else
4223                 i40e_vsi_close(vsi);
4224 }
4225
4226 /**
4227  * i40e_unquiesce_vsi - Resume a given VSI
4228  * @vsi: the VSI being resumed
4229  **/
4230 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4231 {
4232         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4233                 return;
4234
4235         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4236         if (vsi->netdev && netif_running(vsi->netdev))
4237                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4238         else
4239                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4240 }
4241
4242 /**
4243  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4244  * @pf: the PF
4245  **/
4246 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4247 {
4248         int v;
4249
4250         for (v = 0; v < pf->num_alloc_vsi; v++) {
4251                 if (pf->vsi[v])
4252                         i40e_quiesce_vsi(pf->vsi[v]);
4253         }
4254 }
4255
4256 /**
4257  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4258  * @pf: the PF
4259  **/
4260 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4261 {
4262         int v;
4263
4264         for (v = 0; v < pf->num_alloc_vsi; v++) {
4265                 if (pf->vsi[v])
4266                         i40e_unquiesce_vsi(pf->vsi[v]);
4267         }
4268 }
4269
4270 #ifdef CONFIG_I40E_DCB
4271 /**
4272  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4273  * @vsi: the VSI being configured
4274  *
4275  * This function waits for the given VSI's Tx queues to be disabled.
4276  **/
4277 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4278 {
4279         struct i40e_pf *pf = vsi->back;
4280         int i, pf_q, ret;
4281
4282         pf_q = vsi->base_queue;
4283         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4284                 /* Check and wait for the disable status of the queue */
4285                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4286                 if (ret) {
4287                         dev_info(&pf->pdev->dev,
4288                                  "VSI seid %d Tx ring %d disable timeout\n",
4289                                  vsi->seid, pf_q);
4290                         return ret;
4291                 }
4292         }
4293
4294         return 0;
4295 }
4296
4297 /**
4298  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4299  * @pf: the PF
4300  *
4301  * This function waits for the Tx queues to be in disabled state for all the
4302  * VSIs that are managed by this PF.
4303  **/
4304 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4305 {
4306         int v, ret = 0;
4307
4308         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4309                 /* No need to wait for FCoE VSI queues */
4310                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4311                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4312                         if (ret)
4313                                 break;
4314                 }
4315         }
4316
4317         return ret;
4318 }
4319
4320 #endif
4321
4322 /**
4323  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4324  * @q_idx: TX queue number
4325  * @vsi: Pointer to VSI struct
4326  *
4327  * This function checks specified queue for given VSI. Detects hung condition.
4328  * Sets hung bit since it is two step process. Before next run of service task
4329  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4330  * hung condition remain unchanged and during subsequent run, this function
4331  * issues SW interrupt to recover from hung condition.
4332  **/
4333 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4334 {
4335         struct i40e_ring *tx_ring = NULL;
4336         struct i40e_pf  *pf;
4337         u32 head, val, tx_pending;
4338         int i;
4339
4340         pf = vsi->back;
4341
4342         /* now that we have an index, find the tx_ring struct */
4343         for (i = 0; i < vsi->num_queue_pairs; i++) {
4344                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4345                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4346                                 tx_ring = vsi->tx_rings[i];
4347                                 break;
4348                         }
4349                 }
4350         }
4351
4352         if (!tx_ring)
4353                 return;
4354
4355         /* Read interrupt register */
4356         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4357                 val = rd32(&pf->hw,
4358                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4359                                                tx_ring->vsi->base_vector - 1));
4360         else
4361                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4362
4363         head = i40e_get_head(tx_ring);
4364
4365         tx_pending = i40e_get_tx_pending(tx_ring);
4366
4367         /* Interrupts are disabled and TX pending is non-zero,
4368          * trigger the SW interrupt (don't wait). Worst case
4369          * there will be one extra interrupt which may result
4370          * into not cleaning any queues because queues are cleaned.
4371          */
4372         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4373                 i40e_force_wb(vsi, tx_ring->q_vector);
4374 }
4375
4376 /**
4377  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4378  * @pf:  pointer to PF struct
4379  *
4380  * LAN VSI has netdev and netdev has TX queues. This function is to check
4381  * each of those TX queues if they are hung, trigger recovery by issuing
4382  * SW interrupt.
4383  **/
4384 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4385 {
4386         struct net_device *netdev;
4387         struct i40e_vsi *vsi;
4388         int i;
4389
4390         /* Only for LAN VSI */
4391         vsi = pf->vsi[pf->lan_vsi];
4392
4393         if (!vsi)
4394                 return;
4395
4396         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4397         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4398             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4399                 return;
4400
4401         /* Make sure type is MAIN VSI */
4402         if (vsi->type != I40E_VSI_MAIN)
4403                 return;
4404
4405         netdev = vsi->netdev;
4406         if (!netdev)
4407                 return;
4408
4409         /* Bail out if netif_carrier is not OK */
4410         if (!netif_carrier_ok(netdev))
4411                 return;
4412
4413         /* Go thru' TX queues for netdev */
4414         for (i = 0; i < netdev->num_tx_queues; i++) {
4415                 struct netdev_queue *q;
4416
4417                 q = netdev_get_tx_queue(netdev, i);
4418                 if (q)
4419                         i40e_detect_recover_hung_queue(i, vsi);
4420         }
4421 }
4422
4423 /**
4424  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4425  * @pf: pointer to PF
4426  *
4427  * Get TC map for ISCSI PF type that will include iSCSI TC
4428  * and LAN TC.
4429  **/
4430 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4431 {
4432         struct i40e_dcb_app_priority_table app;
4433         struct i40e_hw *hw = &pf->hw;
4434         u8 enabled_tc = 1; /* TC0 is always enabled */
4435         u8 tc, i;
4436         /* Get the iSCSI APP TLV */
4437         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4438
4439         for (i = 0; i < dcbcfg->numapps; i++) {
4440                 app = dcbcfg->app[i];
4441                 if (app.selector == I40E_APP_SEL_TCPIP &&
4442                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4443                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4444                         enabled_tc |= BIT_ULL(tc);
4445                         break;
4446                 }
4447         }
4448
4449         return enabled_tc;
4450 }
4451
4452 /**
4453  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4454  * @dcbcfg: the corresponding DCBx configuration structure
4455  *
4456  * Return the number of TCs from given DCBx configuration
4457  **/
4458 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4459 {
4460         u8 num_tc = 0;
4461         int i;
4462
4463         /* Scan the ETS Config Priority Table to find
4464          * traffic class enabled for a given priority
4465          * and use the traffic class index to get the
4466          * number of traffic classes enabled
4467          */
4468         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4469                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4470                         num_tc = dcbcfg->etscfg.prioritytable[i];
4471         }
4472
4473         /* Traffic class index starts from zero so
4474          * increment to return the actual count
4475          */
4476         return num_tc + 1;
4477 }
4478
4479 /**
4480  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4481  * @dcbcfg: the corresponding DCBx configuration structure
4482  *
4483  * Query the current DCB configuration and return the number of
4484  * traffic classes enabled from the given DCBX config
4485  **/
4486 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4487 {
4488         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4489         u8 enabled_tc = 1;
4490         u8 i;
4491
4492         for (i = 0; i < num_tc; i++)
4493                 enabled_tc |= BIT(i);
4494
4495         return enabled_tc;
4496 }
4497
4498 /**
4499  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4500  * @pf: PF being queried
4501  *
4502  * Return number of traffic classes enabled for the given PF
4503  **/
4504 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4505 {
4506         struct i40e_hw *hw = &pf->hw;
4507         u8 i, enabled_tc;
4508         u8 num_tc = 0;
4509         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4510
4511         /* If DCB is not enabled then always in single TC */
4512         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4513                 return 1;
4514
4515         /* SFP mode will be enabled for all TCs on port */
4516         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4517                 return i40e_dcb_get_num_tc(dcbcfg);
4518
4519         /* MFP mode return count of enabled TCs for this PF */
4520         if (pf->hw.func_caps.iscsi)
4521                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4522         else
4523                 return 1; /* Only TC0 */
4524
4525         /* At least have TC0 */
4526         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4527         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4528                 if (enabled_tc & BIT_ULL(i))
4529                         num_tc++;
4530         }
4531         return num_tc;
4532 }
4533
4534 /**
4535  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4536  * @pf: PF being queried
4537  *
4538  * Return a bitmap for first enabled traffic class for this PF.
4539  **/
4540 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4541 {
4542         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4543         u8 i = 0;
4544
4545         if (!enabled_tc)
4546                 return 0x1; /* TC0 */
4547
4548         /* Find the first enabled TC */
4549         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4550                 if (enabled_tc & BIT_ULL(i))
4551                         break;
4552         }
4553
4554         return BIT(i);
4555 }
4556
4557 /**
4558  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4559  * @pf: PF being queried
4560  *
4561  * Return a bitmap for enabled traffic classes for this PF.
4562  **/
4563 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4564 {
4565         /* If DCB is not enabled for this PF then just return default TC */
4566         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4567                 return i40e_pf_get_default_tc(pf);
4568
4569         /* SFP mode we want PF to be enabled for all TCs */
4570         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4571                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4572
4573         /* MFP enabled and iSCSI PF type */
4574         if (pf->hw.func_caps.iscsi)
4575                 return i40e_get_iscsi_tc_map(pf);
4576         else
4577                 return i40e_pf_get_default_tc(pf);
4578 }
4579
4580 /**
4581  * i40e_vsi_get_bw_info - Query VSI BW Information
4582  * @vsi: the VSI being queried
4583  *
4584  * Returns 0 on success, negative value on failure
4585  **/
4586 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4587 {
4588         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4589         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4590         struct i40e_pf *pf = vsi->back;
4591         struct i40e_hw *hw = &pf->hw;
4592         i40e_status ret;
4593         u32 tc_bw_max;
4594         int i;
4595
4596         /* Get the VSI level BW configuration */
4597         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4598         if (ret) {
4599                 dev_info(&pf->pdev->dev,
4600                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4601                          i40e_stat_str(&pf->hw, ret),
4602                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4603                 return -EINVAL;
4604         }
4605
4606         /* Get the VSI level BW configuration per TC */
4607         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4608                                                NULL);
4609         if (ret) {
4610                 dev_info(&pf->pdev->dev,
4611                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4612                          i40e_stat_str(&pf->hw, ret),
4613                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4614                 return -EINVAL;
4615         }
4616
4617         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4618                 dev_info(&pf->pdev->dev,
4619                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4620                          bw_config.tc_valid_bits,
4621                          bw_ets_config.tc_valid_bits);
4622                 /* Still continuing */
4623         }
4624
4625         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4626         vsi->bw_max_quanta = bw_config.max_bw;
4627         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4628                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4629         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4630                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4631                 vsi->bw_ets_limit_credits[i] =
4632                                         le16_to_cpu(bw_ets_config.credits[i]);
4633                 /* 3 bits out of 4 for each TC */
4634                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4635         }
4636
4637         return 0;
4638 }
4639
4640 /**
4641  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4642  * @vsi: the VSI being configured
4643  * @enabled_tc: TC bitmap
4644  * @bw_credits: BW shared credits per TC
4645  *
4646  * Returns 0 on success, negative value on failure
4647  **/
4648 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4649                                        u8 *bw_share)
4650 {
4651         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4652         i40e_status ret;
4653         int i;
4654
4655         bw_data.tc_valid_bits = enabled_tc;
4656         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4657                 bw_data.tc_bw_credits[i] = bw_share[i];
4658
4659         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4660                                        NULL);
4661         if (ret) {
4662                 dev_info(&vsi->back->pdev->dev,
4663                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4664                          vsi->back->hw.aq.asq_last_status);
4665                 return -EINVAL;
4666         }
4667
4668         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4669                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4670
4671         return 0;
4672 }
4673
4674 /**
4675  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4676  * @vsi: the VSI being configured
4677  * @enabled_tc: TC map to be enabled
4678  *
4679  **/
4680 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4681 {
4682         struct net_device *netdev = vsi->netdev;
4683         struct i40e_pf *pf = vsi->back;
4684         struct i40e_hw *hw = &pf->hw;
4685         u8 netdev_tc = 0;
4686         int i;
4687         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4688
4689         if (!netdev)
4690                 return;
4691
4692         if (!enabled_tc) {
4693                 netdev_reset_tc(netdev);
4694                 return;
4695         }
4696
4697         /* Set up actual enabled TCs on the VSI */
4698         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4699                 return;
4700
4701         /* set per TC queues for the VSI */
4702         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4703                 /* Only set TC queues for enabled tcs
4704                  *
4705                  * e.g. For a VSI that has TC0 and TC3 enabled the
4706                  * enabled_tc bitmap would be 0x00001001; the driver
4707                  * will set the numtc for netdev as 2 that will be
4708                  * referenced by the netdev layer as TC 0 and 1.
4709                  */
4710                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4711                         netdev_set_tc_queue(netdev,
4712                                         vsi->tc_config.tc_info[i].netdev_tc,
4713                                         vsi->tc_config.tc_info[i].qcount,
4714                                         vsi->tc_config.tc_info[i].qoffset);
4715         }
4716
4717         /* Assign UP2TC map for the VSI */
4718         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4719                 /* Get the actual TC# for the UP */
4720                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4721                 /* Get the mapped netdev TC# for the UP */
4722                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4723                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4724         }
4725 }
4726
4727 /**
4728  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4729  * @vsi: the VSI being configured
4730  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4731  **/
4732 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4733                                       struct i40e_vsi_context *ctxt)
4734 {
4735         /* copy just the sections touched not the entire info
4736          * since not all sections are valid as returned by
4737          * update vsi params
4738          */
4739         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4740         memcpy(&vsi->info.queue_mapping,
4741                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4742         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4743                sizeof(vsi->info.tc_mapping));
4744 }
4745
4746 /**
4747  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4748  * @vsi: VSI to be configured
4749  * @enabled_tc: TC bitmap
4750  *
4751  * This configures a particular VSI for TCs that are mapped to the
4752  * given TC bitmap. It uses default bandwidth share for TCs across
4753  * VSIs to configure TC for a particular VSI.
4754  *
4755  * NOTE:
4756  * It is expected that the VSI queues have been quisced before calling
4757  * this function.
4758  **/
4759 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4760 {
4761         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4762         struct i40e_vsi_context ctxt;
4763         int ret = 0;
4764         int i;
4765
4766         /* Check if enabled_tc is same as existing or new TCs */
4767         if (vsi->tc_config.enabled_tc == enabled_tc)
4768                 return ret;
4769
4770         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4771         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4772                 if (enabled_tc & BIT_ULL(i))
4773                         bw_share[i] = 1;
4774         }
4775
4776         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4777         if (ret) {
4778                 dev_info(&vsi->back->pdev->dev,
4779                          "Failed configuring TC map %d for VSI %d\n",
4780                          enabled_tc, vsi->seid);
4781                 goto out;
4782         }
4783
4784         /* Update Queue Pairs Mapping for currently enabled UPs */
4785         ctxt.seid = vsi->seid;
4786         ctxt.pf_num = vsi->back->hw.pf_id;
4787         ctxt.vf_num = 0;
4788         ctxt.uplink_seid = vsi->uplink_seid;
4789         ctxt.info = vsi->info;
4790         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4791
4792         /* Update the VSI after updating the VSI queue-mapping information */
4793         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4794         if (ret) {
4795                 dev_info(&vsi->back->pdev->dev,
4796                          "Update vsi tc config failed, err %s aq_err %s\n",
4797                          i40e_stat_str(&vsi->back->hw, ret),
4798                          i40e_aq_str(&vsi->back->hw,
4799                                      vsi->back->hw.aq.asq_last_status));
4800                 goto out;
4801         }
4802         /* update the local VSI info with updated queue map */
4803         i40e_vsi_update_queue_map(vsi, &ctxt);
4804         vsi->info.valid_sections = 0;
4805
4806         /* Update current VSI BW information */
4807         ret = i40e_vsi_get_bw_info(vsi);
4808         if (ret) {
4809                 dev_info(&vsi->back->pdev->dev,
4810                          "Failed updating vsi bw info, err %s aq_err %s\n",
4811                          i40e_stat_str(&vsi->back->hw, ret),
4812                          i40e_aq_str(&vsi->back->hw,
4813                                      vsi->back->hw.aq.asq_last_status));
4814                 goto out;
4815         }
4816
4817         /* Update the netdev TC setup */
4818         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4819 out:
4820         return ret;
4821 }
4822
4823 /**
4824  * i40e_veb_config_tc - Configure TCs for given VEB
4825  * @veb: given VEB
4826  * @enabled_tc: TC bitmap
4827  *
4828  * Configures given TC bitmap for VEB (switching) element
4829  **/
4830 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4831 {
4832         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4833         struct i40e_pf *pf = veb->pf;
4834         int ret = 0;
4835         int i;
4836
4837         /* No TCs or already enabled TCs just return */
4838         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4839                 return ret;
4840
4841         bw_data.tc_valid_bits = enabled_tc;
4842         /* bw_data.absolute_credits is not set (relative) */
4843
4844         /* Enable ETS TCs with equal BW Share for now */
4845         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4846                 if (enabled_tc & BIT_ULL(i))
4847                         bw_data.tc_bw_share_credits[i] = 1;
4848         }
4849
4850         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4851                                                    &bw_data, NULL);
4852         if (ret) {
4853                 dev_info(&pf->pdev->dev,
4854                          "VEB bw config failed, err %s aq_err %s\n",
4855                          i40e_stat_str(&pf->hw, ret),
4856                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4857                 goto out;
4858         }
4859
4860         /* Update the BW information */
4861         ret = i40e_veb_get_bw_info(veb);
4862         if (ret) {
4863                 dev_info(&pf->pdev->dev,
4864                          "Failed getting veb bw config, err %s aq_err %s\n",
4865                          i40e_stat_str(&pf->hw, ret),
4866                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4867         }
4868
4869 out:
4870         return ret;
4871 }
4872
4873 #ifdef CONFIG_I40E_DCB
4874 /**
4875  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4876  * @pf: PF struct
4877  *
4878  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4879  * the caller would've quiesce all the VSIs before calling
4880  * this function
4881  **/
4882 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4883 {
4884         u8 tc_map = 0;
4885         int ret;
4886         u8 v;
4887
4888         /* Enable the TCs available on PF to all VEBs */
4889         tc_map = i40e_pf_get_tc_map(pf);
4890         for (v = 0; v < I40E_MAX_VEB; v++) {
4891                 if (!pf->veb[v])
4892                         continue;
4893                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4894                 if (ret) {
4895                         dev_info(&pf->pdev->dev,
4896                                  "Failed configuring TC for VEB seid=%d\n",
4897                                  pf->veb[v]->seid);
4898                         /* Will try to configure as many components */
4899                 }
4900         }
4901
4902         /* Update each VSI */
4903         for (v = 0; v < pf->num_alloc_vsi; v++) {
4904                 if (!pf->vsi[v])
4905                         continue;
4906
4907                 /* - Enable all TCs for the LAN VSI
4908 #ifdef I40E_FCOE
4909                  * - For FCoE VSI only enable the TC configured
4910                  *   as per the APP TLV
4911 #endif
4912                  * - For all others keep them at TC0 for now
4913                  */
4914                 if (v == pf->lan_vsi)
4915                         tc_map = i40e_pf_get_tc_map(pf);
4916                 else
4917                         tc_map = i40e_pf_get_default_tc(pf);
4918 #ifdef I40E_FCOE
4919                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4920                         tc_map = i40e_get_fcoe_tc_map(pf);
4921 #endif /* #ifdef I40E_FCOE */
4922
4923                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4924                 if (ret) {
4925                         dev_info(&pf->pdev->dev,
4926                                  "Failed configuring TC for VSI seid=%d\n",
4927                                  pf->vsi[v]->seid);
4928                         /* Will try to configure as many components */
4929                 } else {
4930                         /* Re-configure VSI vectors based on updated TC map */
4931                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4932                         if (pf->vsi[v]->netdev)
4933                                 i40e_dcbnl_set_all(pf->vsi[v]);
4934                 }
4935         }
4936 }
4937
4938 /**
4939  * i40e_resume_port_tx - Resume port Tx
4940  * @pf: PF struct
4941  *
4942  * Resume a port's Tx and issue a PF reset in case of failure to
4943  * resume.
4944  **/
4945 static int i40e_resume_port_tx(struct i40e_pf *pf)
4946 {
4947         struct i40e_hw *hw = &pf->hw;
4948         int ret;
4949
4950         ret = i40e_aq_resume_port_tx(hw, NULL);
4951         if (ret) {
4952                 dev_info(&pf->pdev->dev,
4953                          "Resume Port Tx failed, err %s aq_err %s\n",
4954                           i40e_stat_str(&pf->hw, ret),
4955                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4956                 /* Schedule PF reset to recover */
4957                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4958                 i40e_service_event_schedule(pf);
4959         }
4960
4961         return ret;
4962 }
4963
4964 /**
4965  * i40e_init_pf_dcb - Initialize DCB configuration
4966  * @pf: PF being configured
4967  *
4968  * Query the current DCB configuration and cache it
4969  * in the hardware structure
4970  **/
4971 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4972 {
4973         struct i40e_hw *hw = &pf->hw;
4974         int err = 0;
4975
4976         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4977         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4978             (pf->hw.aq.fw_maj_ver < 4))
4979                 goto out;
4980
4981         /* Get the initial DCB configuration */
4982         err = i40e_init_dcb(hw);
4983         if (!err) {
4984                 /* Device/Function is not DCBX capable */
4985                 if ((!hw->func_caps.dcb) ||
4986                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4987                         dev_info(&pf->pdev->dev,
4988                                  "DCBX offload is not supported or is disabled for this PF.\n");
4989
4990                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4991                                 goto out;
4992
4993                 } else {
4994                         /* When status is not DISABLED then DCBX in FW */
4995                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4996                                        DCB_CAP_DCBX_VER_IEEE;
4997
4998                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4999                         /* Enable DCB tagging only when more than one TC */
5000                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5001                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5002                         dev_dbg(&pf->pdev->dev,
5003                                 "DCBX offload is supported for this PF.\n");
5004                 }
5005         } else {
5006                 dev_info(&pf->pdev->dev,
5007                          "Query for DCB configuration failed, err %s aq_err %s\n",
5008                          i40e_stat_str(&pf->hw, err),
5009                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5010         }
5011
5012 out:
5013         return err;
5014 }
5015 #endif /* CONFIG_I40E_DCB */
5016 #define SPEED_SIZE 14
5017 #define FC_SIZE 8
5018 /**
5019  * i40e_print_link_message - print link up or down
5020  * @vsi: the VSI for which link needs a message
5021  */
5022 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5023 {
5024         char *speed = "Unknown";
5025         char *fc = "Unknown";
5026
5027         if (vsi->current_isup == isup)
5028                 return;
5029         vsi->current_isup = isup;
5030         if (!isup) {
5031                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5032                 return;
5033         }
5034
5035         /* Warn user if link speed on NPAR enabled partition is not at
5036          * least 10GB
5037          */
5038         if (vsi->back->hw.func_caps.npar_enable &&
5039             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5040              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5041                 netdev_warn(vsi->netdev,
5042                             "The partition detected link speed that is less than 10Gbps\n");
5043
5044         switch (vsi->back->hw.phy.link_info.link_speed) {
5045         case I40E_LINK_SPEED_40GB:
5046                 speed = "40 G";
5047                 break;
5048         case I40E_LINK_SPEED_20GB:
5049                 speed = "20 G";
5050                 break;
5051         case I40E_LINK_SPEED_10GB:
5052                 speed = "10 G";
5053                 break;
5054         case I40E_LINK_SPEED_1GB:
5055                 speed = "1000 M";
5056                 break;
5057         case I40E_LINK_SPEED_100MB:
5058                 speed = "100 M";
5059                 break;
5060         default:
5061                 break;
5062         }
5063
5064         switch (vsi->back->hw.fc.current_mode) {
5065         case I40E_FC_FULL:
5066                 fc = "RX/TX";
5067                 break;
5068         case I40E_FC_TX_PAUSE:
5069                 fc = "TX";
5070                 break;
5071         case I40E_FC_RX_PAUSE:
5072                 fc = "RX";
5073                 break;
5074         default:
5075                 fc = "None";
5076                 break;
5077         }
5078
5079         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5080                     speed, fc);
5081 }
5082
5083 /**
5084  * i40e_up_complete - Finish the last steps of bringing up a connection
5085  * @vsi: the VSI being configured
5086  **/
5087 static int i40e_up_complete(struct i40e_vsi *vsi)
5088 {
5089         struct i40e_pf *pf = vsi->back;
5090         int err;
5091
5092         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5093                 i40e_vsi_configure_msix(vsi);
5094         else
5095                 i40e_configure_msi_and_legacy(vsi);
5096
5097         /* start rings */
5098         err = i40e_vsi_control_rings(vsi, true);
5099         if (err)
5100                 return err;
5101
5102         clear_bit(__I40E_DOWN, &vsi->state);
5103         i40e_napi_enable_all(vsi);
5104         i40e_vsi_enable_irq(vsi);
5105
5106         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5107             (vsi->netdev)) {
5108                 i40e_print_link_message(vsi, true);
5109                 netif_tx_start_all_queues(vsi->netdev);
5110                 netif_carrier_on(vsi->netdev);
5111         } else if (vsi->netdev) {
5112                 i40e_print_link_message(vsi, false);
5113                 /* need to check for qualified module here*/
5114                 if ((pf->hw.phy.link_info.link_info &
5115                         I40E_AQ_MEDIA_AVAILABLE) &&
5116                     (!(pf->hw.phy.link_info.an_info &
5117                         I40E_AQ_QUALIFIED_MODULE)))
5118                         netdev_err(vsi->netdev,
5119                                    "the driver failed to link because an unqualified module was detected.");
5120         }
5121
5122         /* replay FDIR SB filters */
5123         if (vsi->type == I40E_VSI_FDIR) {
5124                 /* reset fd counters */
5125                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5126                 if (pf->fd_tcp_rule > 0) {
5127                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5128                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5129                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5130                         pf->fd_tcp_rule = 0;
5131                 }
5132                 i40e_fdir_filter_restore(vsi);
5133         }
5134         i40e_service_event_schedule(pf);
5135
5136         return 0;
5137 }
5138
5139 /**
5140  * i40e_vsi_reinit_locked - Reset the VSI
5141  * @vsi: the VSI being configured
5142  *
5143  * Rebuild the ring structs after some configuration
5144  * has changed, e.g. MTU size.
5145  **/
5146 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5147 {
5148         struct i40e_pf *pf = vsi->back;
5149
5150         WARN_ON(in_interrupt());
5151         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5152                 usleep_range(1000, 2000);
5153         i40e_down(vsi);
5154
5155         /* Give a VF some time to respond to the reset.  The
5156          * two second wait is based upon the watchdog cycle in
5157          * the VF driver.
5158          */
5159         if (vsi->type == I40E_VSI_SRIOV)
5160                 msleep(2000);
5161         i40e_up(vsi);
5162         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5163 }
5164
5165 /**
5166  * i40e_up - Bring the connection back up after being down
5167  * @vsi: the VSI being configured
5168  **/
5169 int i40e_up(struct i40e_vsi *vsi)
5170 {
5171         int err;
5172
5173         err = i40e_vsi_configure(vsi);
5174         if (!err)
5175                 err = i40e_up_complete(vsi);
5176
5177         return err;
5178 }
5179
5180 /**
5181  * i40e_down - Shutdown the connection processing
5182  * @vsi: the VSI being stopped
5183  **/
5184 void i40e_down(struct i40e_vsi *vsi)
5185 {
5186         int i;
5187
5188         /* It is assumed that the caller of this function
5189          * sets the vsi->state __I40E_DOWN bit.
5190          */
5191         if (vsi->netdev) {
5192                 netif_carrier_off(vsi->netdev);
5193                 netif_tx_disable(vsi->netdev);
5194         }
5195         i40e_vsi_disable_irq(vsi);
5196         i40e_vsi_control_rings(vsi, false);
5197         i40e_napi_disable_all(vsi);
5198
5199         for (i = 0; i < vsi->num_queue_pairs; i++) {
5200                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5201                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5202         }
5203 }
5204
5205 /**
5206  * i40e_setup_tc - configure multiple traffic classes
5207  * @netdev: net device to configure
5208  * @tc: number of traffic classes to enable
5209  **/
5210 #ifdef I40E_FCOE
5211 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5212 #else
5213 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5214 #endif
5215 {
5216         struct i40e_netdev_priv *np = netdev_priv(netdev);
5217         struct i40e_vsi *vsi = np->vsi;
5218         struct i40e_pf *pf = vsi->back;
5219         u8 enabled_tc = 0;
5220         int ret = -EINVAL;
5221         int i;
5222
5223         /* Check if DCB enabled to continue */
5224         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5225                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5226                 goto exit;
5227         }
5228
5229         /* Check if MFP enabled */
5230         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5231                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5232                 goto exit;
5233         }
5234
5235         /* Check whether tc count is within enabled limit */
5236         if (tc > i40e_pf_get_num_tc(pf)) {
5237                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5238                 goto exit;
5239         }
5240
5241         /* Generate TC map for number of tc requested */
5242         for (i = 0; i < tc; i++)
5243                 enabled_tc |= BIT_ULL(i);
5244
5245         /* Requesting same TC configuration as already enabled */
5246         if (enabled_tc == vsi->tc_config.enabled_tc)
5247                 return 0;
5248
5249         /* Quiesce VSI queues */
5250         i40e_quiesce_vsi(vsi);
5251
5252         /* Configure VSI for enabled TCs */
5253         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5254         if (ret) {
5255                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5256                             vsi->seid);
5257                 goto exit;
5258         }
5259
5260         /* Unquiesce VSI */
5261         i40e_unquiesce_vsi(vsi);
5262
5263 exit:
5264         return ret;
5265 }
5266
5267 /**
5268  * i40e_open - Called when a network interface is made active
5269  * @netdev: network interface device structure
5270  *
5271  * The open entry point is called when a network interface is made
5272  * active by the system (IFF_UP).  At this point all resources needed
5273  * for transmit and receive operations are allocated, the interrupt
5274  * handler is registered with the OS, the netdev watchdog subtask is
5275  * enabled, and the stack is notified that the interface is ready.
5276  *
5277  * Returns 0 on success, negative value on failure
5278  **/
5279 int i40e_open(struct net_device *netdev)
5280 {
5281         struct i40e_netdev_priv *np = netdev_priv(netdev);
5282         struct i40e_vsi *vsi = np->vsi;
5283         struct i40e_pf *pf = vsi->back;
5284         int err;
5285
5286         /* disallow open during test or if eeprom is broken */
5287         if (test_bit(__I40E_TESTING, &pf->state) ||
5288             test_bit(__I40E_BAD_EEPROM, &pf->state))
5289                 return -EBUSY;
5290
5291         netif_carrier_off(netdev);
5292
5293         err = i40e_vsi_open(vsi);
5294         if (err)
5295                 return err;
5296
5297         /* configure global TSO hardware offload settings */
5298         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5299                                                        TCP_FLAG_FIN) >> 16);
5300         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5301                                                        TCP_FLAG_FIN |
5302                                                        TCP_FLAG_CWR) >> 16);
5303         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5304
5305 #ifdef CONFIG_I40E_VXLAN
5306         vxlan_get_rx_port(netdev);
5307 #endif
5308
5309         return 0;
5310 }
5311
5312 /**
5313  * i40e_vsi_open -
5314  * @vsi: the VSI to open
5315  *
5316  * Finish initialization of the VSI.
5317  *
5318  * Returns 0 on success, negative value on failure
5319  **/
5320 int i40e_vsi_open(struct i40e_vsi *vsi)
5321 {
5322         struct i40e_pf *pf = vsi->back;
5323         char int_name[I40E_INT_NAME_STR_LEN];
5324         int err;
5325
5326         /* allocate descriptors */
5327         err = i40e_vsi_setup_tx_resources(vsi);
5328         if (err)
5329                 goto err_setup_tx;
5330         err = i40e_vsi_setup_rx_resources(vsi);
5331         if (err)
5332                 goto err_setup_rx;
5333
5334         err = i40e_vsi_configure(vsi);
5335         if (err)
5336                 goto err_setup_rx;
5337
5338         if (vsi->netdev) {
5339                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5340                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5341                 err = i40e_vsi_request_irq(vsi, int_name);
5342                 if (err)
5343                         goto err_setup_rx;
5344
5345                 /* Notify the stack of the actual queue counts. */
5346                 err = netif_set_real_num_tx_queues(vsi->netdev,
5347                                                    vsi->num_queue_pairs);
5348                 if (err)
5349                         goto err_set_queues;
5350
5351                 err = netif_set_real_num_rx_queues(vsi->netdev,
5352                                                    vsi->num_queue_pairs);
5353                 if (err)
5354                         goto err_set_queues;
5355
5356         } else if (vsi->type == I40E_VSI_FDIR) {
5357                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5358                          dev_driver_string(&pf->pdev->dev),
5359                          dev_name(&pf->pdev->dev));
5360                 err = i40e_vsi_request_irq(vsi, int_name);
5361
5362         } else {
5363                 err = -EINVAL;
5364                 goto err_setup_rx;
5365         }
5366
5367         err = i40e_up_complete(vsi);
5368         if (err)
5369                 goto err_up_complete;
5370
5371         return 0;
5372
5373 err_up_complete:
5374         i40e_down(vsi);
5375 err_set_queues:
5376         i40e_vsi_free_irq(vsi);
5377 err_setup_rx:
5378         i40e_vsi_free_rx_resources(vsi);
5379 err_setup_tx:
5380         i40e_vsi_free_tx_resources(vsi);
5381         if (vsi == pf->vsi[pf->lan_vsi])
5382                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5383
5384         return err;
5385 }
5386
5387 /**
5388  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5389  * @pf: Pointer to PF
5390  *
5391  * This function destroys the hlist where all the Flow Director
5392  * filters were saved.
5393  **/
5394 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5395 {
5396         struct i40e_fdir_filter *filter;
5397         struct hlist_node *node2;
5398
5399         hlist_for_each_entry_safe(filter, node2,
5400                                   &pf->fdir_filter_list, fdir_node) {
5401                 hlist_del(&filter->fdir_node);
5402                 kfree(filter);
5403         }
5404         pf->fdir_pf_active_filters = 0;
5405 }
5406
5407 /**
5408  * i40e_close - Disables a network interface
5409  * @netdev: network interface device structure
5410  *
5411  * The close entry point is called when an interface is de-activated
5412  * by the OS.  The hardware is still under the driver's control, but
5413  * this netdev interface is disabled.
5414  *
5415  * Returns 0, this is not allowed to fail
5416  **/
5417 #ifdef I40E_FCOE
5418 int i40e_close(struct net_device *netdev)
5419 #else
5420 static int i40e_close(struct net_device *netdev)
5421 #endif
5422 {
5423         struct i40e_netdev_priv *np = netdev_priv(netdev);
5424         struct i40e_vsi *vsi = np->vsi;
5425
5426         i40e_vsi_close(vsi);
5427
5428         return 0;
5429 }
5430
5431 /**
5432  * i40e_do_reset - Start a PF or Core Reset sequence
5433  * @pf: board private structure
5434  * @reset_flags: which reset is requested
5435  *
5436  * The essential difference in resets is that the PF Reset
5437  * doesn't clear the packet buffers, doesn't reset the PE
5438  * firmware, and doesn't bother the other PFs on the chip.
5439  **/
5440 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5441 {
5442         u32 val;
5443
5444         WARN_ON(in_interrupt());
5445
5446         if (i40e_check_asq_alive(&pf->hw))
5447                 i40e_vc_notify_reset(pf);
5448
5449         /* do the biggest reset indicated */
5450         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5451
5452                 /* Request a Global Reset
5453                  *
5454                  * This will start the chip's countdown to the actual full
5455                  * chip reset event, and a warning interrupt to be sent
5456                  * to all PFs, including the requestor.  Our handler
5457                  * for the warning interrupt will deal with the shutdown
5458                  * and recovery of the switch setup.
5459                  */
5460                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5461                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5462                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5463                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5464
5465         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5466
5467                 /* Request a Core Reset
5468                  *
5469                  * Same as Global Reset, except does *not* include the MAC/PHY
5470                  */
5471                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5472                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5473                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5474                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5475                 i40e_flush(&pf->hw);
5476
5477         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5478
5479                 /* Request a PF Reset
5480                  *
5481                  * Resets only the PF-specific registers
5482                  *
5483                  * This goes directly to the tear-down and rebuild of
5484                  * the switch, since we need to do all the recovery as
5485                  * for the Core Reset.
5486                  */
5487                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5488                 i40e_handle_reset_warning(pf);
5489
5490         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5491                 int v;
5492
5493                 /* Find the VSI(s) that requested a re-init */
5494                 dev_info(&pf->pdev->dev,
5495                          "VSI reinit requested\n");
5496                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5497                         struct i40e_vsi *vsi = pf->vsi[v];
5498
5499                         if (vsi != NULL &&
5500                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5501                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5502                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5503                         }
5504                 }
5505         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5506                 int v;
5507
5508                 /* Find the VSI(s) that needs to be brought down */
5509                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5510                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5511                         struct i40e_vsi *vsi = pf->vsi[v];
5512
5513                         if (vsi != NULL &&
5514                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5515                                 set_bit(__I40E_DOWN, &vsi->state);
5516                                 i40e_down(vsi);
5517                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5518                         }
5519                 }
5520         } else {
5521                 dev_info(&pf->pdev->dev,
5522                          "bad reset request 0x%08x\n", reset_flags);
5523         }
5524 }
5525
5526 #ifdef CONFIG_I40E_DCB
5527 /**
5528  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5529  * @pf: board private structure
5530  * @old_cfg: current DCB config
5531  * @new_cfg: new DCB config
5532  **/
5533 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5534                             struct i40e_dcbx_config *old_cfg,
5535                             struct i40e_dcbx_config *new_cfg)
5536 {
5537         bool need_reconfig = false;
5538
5539         /* Check if ETS configuration has changed */
5540         if (memcmp(&new_cfg->etscfg,
5541                    &old_cfg->etscfg,
5542                    sizeof(new_cfg->etscfg))) {
5543                 /* If Priority Table has changed reconfig is needed */
5544                 if (memcmp(&new_cfg->etscfg.prioritytable,
5545                            &old_cfg->etscfg.prioritytable,
5546                            sizeof(new_cfg->etscfg.prioritytable))) {
5547                         need_reconfig = true;
5548                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5549                 }
5550
5551                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5552                            &old_cfg->etscfg.tcbwtable,
5553                            sizeof(new_cfg->etscfg.tcbwtable)))
5554                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5555
5556                 if (memcmp(&new_cfg->etscfg.tsatable,
5557                            &old_cfg->etscfg.tsatable,
5558                            sizeof(new_cfg->etscfg.tsatable)))
5559                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5560         }
5561
5562         /* Check if PFC configuration has changed */
5563         if (memcmp(&new_cfg->pfc,
5564                    &old_cfg->pfc,
5565                    sizeof(new_cfg->pfc))) {
5566                 need_reconfig = true;
5567                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5568         }
5569
5570         /* Check if APP Table has changed */
5571         if (memcmp(&new_cfg->app,
5572                    &old_cfg->app,
5573                    sizeof(new_cfg->app))) {
5574                 need_reconfig = true;
5575                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5576         }
5577
5578         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5579         return need_reconfig;
5580 }
5581
5582 /**
5583  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5584  * @pf: board private structure
5585  * @e: event info posted on ARQ
5586  **/
5587 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5588                                   struct i40e_arq_event_info *e)
5589 {
5590         struct i40e_aqc_lldp_get_mib *mib =
5591                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5592         struct i40e_hw *hw = &pf->hw;
5593         struct i40e_dcbx_config tmp_dcbx_cfg;
5594         bool need_reconfig = false;
5595         int ret = 0;
5596         u8 type;
5597
5598         /* Not DCB capable or capability disabled */
5599         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5600                 return ret;
5601
5602         /* Ignore if event is not for Nearest Bridge */
5603         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5604                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5605         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5606         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5607                 return ret;
5608
5609         /* Check MIB Type and return if event for Remote MIB update */
5610         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5611         dev_dbg(&pf->pdev->dev,
5612                 "LLDP event mib type %s\n", type ? "remote" : "local");
5613         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5614                 /* Update the remote cached instance and return */
5615                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5616                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5617                                 &hw->remote_dcbx_config);
5618                 goto exit;
5619         }
5620
5621         /* Store the old configuration */
5622         tmp_dcbx_cfg = hw->local_dcbx_config;
5623
5624         /* Reset the old DCBx configuration data */
5625         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5626         /* Get updated DCBX data from firmware */
5627         ret = i40e_get_dcb_config(&pf->hw);
5628         if (ret) {
5629                 dev_info(&pf->pdev->dev,
5630                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5631                          i40e_stat_str(&pf->hw, ret),
5632                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5633                 goto exit;
5634         }
5635
5636         /* No change detected in DCBX configs */
5637         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5638                     sizeof(tmp_dcbx_cfg))) {
5639                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5640                 goto exit;
5641         }
5642
5643         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5644                                                &hw->local_dcbx_config);
5645
5646         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5647
5648         if (!need_reconfig)
5649                 goto exit;
5650
5651         /* Enable DCB tagging only when more than one TC */
5652         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5653                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5654         else
5655                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5656
5657         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5658         /* Reconfiguration needed quiesce all VSIs */
5659         i40e_pf_quiesce_all_vsi(pf);
5660
5661         /* Changes in configuration update VEB/VSI */
5662         i40e_dcb_reconfigure(pf);
5663
5664         ret = i40e_resume_port_tx(pf);
5665
5666         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5667         /* In case of error no point in resuming VSIs */
5668         if (ret)
5669                 goto exit;
5670
5671         /* Wait for the PF's Tx queues to be disabled */
5672         ret = i40e_pf_wait_txq_disabled(pf);
5673         if (ret) {
5674                 /* Schedule PF reset to recover */
5675                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5676                 i40e_service_event_schedule(pf);
5677         } else {
5678                 i40e_pf_unquiesce_all_vsi(pf);
5679         }
5680
5681 exit:
5682         return ret;
5683 }
5684 #endif /* CONFIG_I40E_DCB */
5685
5686 /**
5687  * i40e_do_reset_safe - Protected reset path for userland calls.
5688  * @pf: board private structure
5689  * @reset_flags: which reset is requested
5690  *
5691  **/
5692 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5693 {
5694         rtnl_lock();
5695         i40e_do_reset(pf, reset_flags);
5696         rtnl_unlock();
5697 }
5698
5699 /**
5700  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5701  * @pf: board private structure
5702  * @e: event info posted on ARQ
5703  *
5704  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5705  * and VF queues
5706  **/
5707 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5708                                            struct i40e_arq_event_info *e)
5709 {
5710         struct i40e_aqc_lan_overflow *data =
5711                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5712         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5713         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5714         struct i40e_hw *hw = &pf->hw;
5715         struct i40e_vf *vf;
5716         u16 vf_id;
5717
5718         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5719                 queue, qtx_ctl);
5720
5721         /* Queue belongs to VF, find the VF and issue VF reset */
5722         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5723             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5724                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5725                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5726                 vf_id -= hw->func_caps.vf_base_id;
5727                 vf = &pf->vf[vf_id];
5728                 i40e_vc_notify_vf_reset(vf);
5729                 /* Allow VF to process pending reset notification */
5730                 msleep(20);
5731                 i40e_reset_vf(vf, false);
5732         }
5733 }
5734
5735 /**
5736  * i40e_service_event_complete - Finish up the service event
5737  * @pf: board private structure
5738  **/
5739 static void i40e_service_event_complete(struct i40e_pf *pf)
5740 {
5741         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5742
5743         /* flush memory to make sure state is correct before next watchog */
5744         smp_mb__before_atomic();
5745         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5746 }
5747
5748 /**
5749  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5750  * @pf: board private structure
5751  **/
5752 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5753 {
5754         u32 val, fcnt_prog;
5755
5756         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5757         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5758         return fcnt_prog;
5759 }
5760
5761 /**
5762  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5763  * @pf: board private structure
5764  **/
5765 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5766 {
5767         u32 val, fcnt_prog;
5768
5769         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5770         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5771                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5772                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5773         return fcnt_prog;
5774 }
5775
5776 /**
5777  * i40e_get_global_fd_count - Get total FD filters programmed on device
5778  * @pf: board private structure
5779  **/
5780 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5781 {
5782         u32 val, fcnt_prog;
5783
5784         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5785         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5786                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5787                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5788         return fcnt_prog;
5789 }
5790
5791 /**
5792  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5793  * @pf: board private structure
5794  **/
5795 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5796 {
5797         struct i40e_fdir_filter *filter;
5798         u32 fcnt_prog, fcnt_avail;
5799         struct hlist_node *node;
5800
5801         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5802                 return;
5803
5804         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5805          * to re-enable
5806          */
5807         fcnt_prog = i40e_get_global_fd_count(pf);
5808         fcnt_avail = pf->fdir_pf_filter_count;
5809         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5810             (pf->fd_add_err == 0) ||
5811             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5812                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5813                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5814                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5815                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5816                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5817                 }
5818         }
5819         /* Wait for some more space to be available to turn on ATR */
5820         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5821                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5822                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5823                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5824                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5825                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5826                 }
5827         }
5828
5829         /* if hw had a problem adding a filter, delete it */
5830         if (pf->fd_inv > 0) {
5831                 hlist_for_each_entry_safe(filter, node,
5832                                           &pf->fdir_filter_list, fdir_node) {
5833                         if (filter->fd_id == pf->fd_inv) {
5834                                 hlist_del(&filter->fdir_node);
5835                                 kfree(filter);
5836                                 pf->fdir_pf_active_filters--;
5837                         }
5838                 }
5839         }
5840 }
5841
5842 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5843 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5844 /**
5845  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5846  * @pf: board private structure
5847  **/
5848 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5849 {
5850         unsigned long min_flush_time;
5851         int flush_wait_retry = 50;
5852         bool disable_atr = false;
5853         int fd_room;
5854         int reg;
5855
5856         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5857                 return;
5858
5859         if (!time_after(jiffies, pf->fd_flush_timestamp +
5860                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5861                 return;
5862
5863         /* If the flush is happening too quick and we have mostly SB rules we
5864          * should not re-enable ATR for some time.
5865          */
5866         min_flush_time = pf->fd_flush_timestamp +
5867                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5868         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5869
5870         if (!(time_after(jiffies, min_flush_time)) &&
5871             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5872                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5873                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5874                 disable_atr = true;
5875         }
5876
5877         pf->fd_flush_timestamp = jiffies;
5878         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5879         /* flush all filters */
5880         wr32(&pf->hw, I40E_PFQF_CTL_1,
5881              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5882         i40e_flush(&pf->hw);
5883         pf->fd_flush_cnt++;
5884         pf->fd_add_err = 0;
5885         do {
5886                 /* Check FD flush status every 5-6msec */
5887                 usleep_range(5000, 6000);
5888                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5889                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5890                         break;
5891         } while (flush_wait_retry--);
5892         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5893                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5894         } else {
5895                 /* replay sideband filters */
5896                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5897                 if (!disable_atr)
5898                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5899                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5900                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5901                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5902         }
5903
5904 }
5905
5906 /**
5907  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5908  * @pf: board private structure
5909  **/
5910 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5911 {
5912         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5913 }
5914
5915 /* We can see up to 256 filter programming desc in transit if the filters are
5916  * being applied really fast; before we see the first
5917  * filter miss error on Rx queue 0. Accumulating enough error messages before
5918  * reacting will make sure we don't cause flush too often.
5919  */
5920 #define I40E_MAX_FD_PROGRAM_ERROR 256
5921
5922 /**
5923  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5924  * @pf: board private structure
5925  **/
5926 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5927 {
5928
5929         /* if interface is down do nothing */
5930         if (test_bit(__I40E_DOWN, &pf->state))
5931                 return;
5932
5933         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5934                 return;
5935
5936         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5937                 i40e_fdir_flush_and_replay(pf);
5938
5939         i40e_fdir_check_and_reenable(pf);
5940
5941 }
5942
5943 /**
5944  * i40e_vsi_link_event - notify VSI of a link event
5945  * @vsi: vsi to be notified
5946  * @link_up: link up or down
5947  **/
5948 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5949 {
5950         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5951                 return;
5952
5953         switch (vsi->type) {
5954         case I40E_VSI_MAIN:
5955 #ifdef I40E_FCOE
5956         case I40E_VSI_FCOE:
5957 #endif
5958                 if (!vsi->netdev || !vsi->netdev_registered)
5959                         break;
5960
5961                 if (link_up) {
5962                         netif_carrier_on(vsi->netdev);
5963                         netif_tx_wake_all_queues(vsi->netdev);
5964                 } else {
5965                         netif_carrier_off(vsi->netdev);
5966                         netif_tx_stop_all_queues(vsi->netdev);
5967                 }
5968                 break;
5969
5970         case I40E_VSI_SRIOV:
5971         case I40E_VSI_VMDQ2:
5972         case I40E_VSI_CTRL:
5973         case I40E_VSI_MIRROR:
5974         default:
5975                 /* there is no notification for other VSIs */
5976                 break;
5977         }
5978 }
5979
5980 /**
5981  * i40e_veb_link_event - notify elements on the veb of a link event
5982  * @veb: veb to be notified
5983  * @link_up: link up or down
5984  **/
5985 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5986 {
5987         struct i40e_pf *pf;
5988         int i;
5989
5990         if (!veb || !veb->pf)
5991                 return;
5992         pf = veb->pf;
5993
5994         /* depth first... */
5995         for (i = 0; i < I40E_MAX_VEB; i++)
5996                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5997                         i40e_veb_link_event(pf->veb[i], link_up);
5998
5999         /* ... now the local VSIs */
6000         for (i = 0; i < pf->num_alloc_vsi; i++)
6001                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6002                         i40e_vsi_link_event(pf->vsi[i], link_up);
6003 }
6004
6005 /**
6006  * i40e_link_event - Update netif_carrier status
6007  * @pf: board private structure
6008  **/
6009 static void i40e_link_event(struct i40e_pf *pf)
6010 {
6011         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6012         u8 new_link_speed, old_link_speed;
6013         i40e_status status;
6014         bool new_link, old_link;
6015
6016         /* set this to force the get_link_status call to refresh state */
6017         pf->hw.phy.get_link_info = true;
6018
6019         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6020
6021         status = i40e_get_link_status(&pf->hw, &new_link);
6022         if (status) {
6023                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6024                         status);
6025                 return;
6026         }
6027
6028         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6029         new_link_speed = pf->hw.phy.link_info.link_speed;
6030
6031         if (new_link == old_link &&
6032             new_link_speed == old_link_speed &&
6033             (test_bit(__I40E_DOWN, &vsi->state) ||
6034              new_link == netif_carrier_ok(vsi->netdev)))
6035                 return;
6036
6037         if (!test_bit(__I40E_DOWN, &vsi->state))
6038                 i40e_print_link_message(vsi, new_link);
6039
6040         /* Notify the base of the switch tree connected to
6041          * the link.  Floating VEBs are not notified.
6042          */
6043         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6044                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6045         else
6046                 i40e_vsi_link_event(vsi, new_link);
6047
6048         if (pf->vf)
6049                 i40e_vc_notify_link_state(pf);
6050
6051         if (pf->flags & I40E_FLAG_PTP)
6052                 i40e_ptp_set_increment(pf);
6053 }
6054
6055 /**
6056  * i40e_watchdog_subtask - periodic checks not using event driven response
6057  * @pf: board private structure
6058  **/
6059 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6060 {
6061         int i;
6062
6063         /* if interface is down do nothing */
6064         if (test_bit(__I40E_DOWN, &pf->state) ||
6065             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6066                 return;
6067
6068         /* make sure we don't do these things too often */
6069         if (time_before(jiffies, (pf->service_timer_previous +
6070                                   pf->service_timer_period)))
6071                 return;
6072         pf->service_timer_previous = jiffies;
6073
6074         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6075                 i40e_link_event(pf);
6076
6077         /* Update the stats for active netdevs so the network stack
6078          * can look at updated numbers whenever it cares to
6079          */
6080         for (i = 0; i < pf->num_alloc_vsi; i++)
6081                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6082                         i40e_update_stats(pf->vsi[i]);
6083
6084         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6085                 /* Update the stats for the active switching components */
6086                 for (i = 0; i < I40E_MAX_VEB; i++)
6087                         if (pf->veb[i])
6088                                 i40e_update_veb_stats(pf->veb[i]);
6089         }
6090
6091         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6092 }
6093
6094 /**
6095  * i40e_reset_subtask - Set up for resetting the device and driver
6096  * @pf: board private structure
6097  **/
6098 static void i40e_reset_subtask(struct i40e_pf *pf)
6099 {
6100         u32 reset_flags = 0;
6101
6102         rtnl_lock();
6103         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6104                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6105                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6106         }
6107         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6108                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6109                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6110         }
6111         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6112                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6113                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6114         }
6115         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6116                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6117                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6118         }
6119         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6120                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6121                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6122         }
6123
6124         /* If there's a recovery already waiting, it takes
6125          * precedence before starting a new reset sequence.
6126          */
6127         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6128                 i40e_handle_reset_warning(pf);
6129                 goto unlock;
6130         }
6131
6132         /* If we're already down or resetting, just bail */
6133         if (reset_flags &&
6134             !test_bit(__I40E_DOWN, &pf->state) &&
6135             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6136                 i40e_do_reset(pf, reset_flags);
6137
6138 unlock:
6139         rtnl_unlock();
6140 }
6141
6142 /**
6143  * i40e_handle_link_event - Handle link event
6144  * @pf: board private structure
6145  * @e: event info posted on ARQ
6146  **/
6147 static void i40e_handle_link_event(struct i40e_pf *pf,
6148                                    struct i40e_arq_event_info *e)
6149 {
6150         struct i40e_hw *hw = &pf->hw;
6151         struct i40e_aqc_get_link_status *status =
6152                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6153
6154         /* save off old link status information */
6155         hw->phy.link_info_old = hw->phy.link_info;
6156
6157         /* Do a new status request to re-enable LSE reporting
6158          * and load new status information into the hw struct
6159          * This completely ignores any state information
6160          * in the ARQ event info, instead choosing to always
6161          * issue the AQ update link status command.
6162          */
6163         i40e_link_event(pf);
6164
6165         /* check for unqualified module, if link is down */
6166         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6167             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6168             (!(status->link_info & I40E_AQ_LINK_UP)))
6169                 dev_err(&pf->pdev->dev,
6170                         "The driver failed to link because an unqualified module was detected.\n");
6171 }
6172
6173 /**
6174  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6175  * @pf: board private structure
6176  **/
6177 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6178 {
6179         struct i40e_arq_event_info event;
6180         struct i40e_hw *hw = &pf->hw;
6181         u16 pending, i = 0;
6182         i40e_status ret;
6183         u16 opcode;
6184         u32 oldval;
6185         u32 val;
6186
6187         /* Do not run clean AQ when PF reset fails */
6188         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6189                 return;
6190
6191         /* check for error indications */
6192         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6193         oldval = val;
6194         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6195                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6196                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6197         }
6198         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6199                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6200                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6201         }
6202         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6203                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6204                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6205         }
6206         if (oldval != val)
6207                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6208
6209         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6210         oldval = val;
6211         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6212                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6213                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6214         }
6215         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6216                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6217                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6218         }
6219         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6220                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6221                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6222         }
6223         if (oldval != val)
6224                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6225
6226         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6227         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6228         if (!event.msg_buf)
6229                 return;
6230
6231         do {
6232                 ret = i40e_clean_arq_element(hw, &event, &pending);
6233                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6234                         break;
6235                 else if (ret) {
6236                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6237                         break;
6238                 }
6239
6240                 opcode = le16_to_cpu(event.desc.opcode);
6241                 switch (opcode) {
6242
6243                 case i40e_aqc_opc_get_link_status:
6244                         i40e_handle_link_event(pf, &event);
6245                         break;
6246                 case i40e_aqc_opc_send_msg_to_pf:
6247                         ret = i40e_vc_process_vf_msg(pf,
6248                                         le16_to_cpu(event.desc.retval),
6249                                         le32_to_cpu(event.desc.cookie_high),
6250                                         le32_to_cpu(event.desc.cookie_low),
6251                                         event.msg_buf,
6252                                         event.msg_len);
6253                         break;
6254                 case i40e_aqc_opc_lldp_update_mib:
6255                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6256 #ifdef CONFIG_I40E_DCB
6257                         rtnl_lock();
6258                         ret = i40e_handle_lldp_event(pf, &event);
6259                         rtnl_unlock();
6260 #endif /* CONFIG_I40E_DCB */
6261                         break;
6262                 case i40e_aqc_opc_event_lan_overflow:
6263                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6264                         i40e_handle_lan_overflow_event(pf, &event);
6265                         break;
6266                 case i40e_aqc_opc_send_msg_to_peer:
6267                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6268                         break;
6269                 case i40e_aqc_opc_nvm_erase:
6270                 case i40e_aqc_opc_nvm_update:
6271                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6272                         break;
6273                 default:
6274                         dev_info(&pf->pdev->dev,
6275                                  "ARQ Error: Unknown event 0x%04x received\n",
6276                                  opcode);
6277                         break;
6278                 }
6279         } while (pending && (i++ < pf->adminq_work_limit));
6280
6281         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6282         /* re-enable Admin queue interrupt cause */
6283         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6284         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6285         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6286         i40e_flush(hw);
6287
6288         kfree(event.msg_buf);
6289 }
6290
6291 /**
6292  * i40e_verify_eeprom - make sure eeprom is good to use
6293  * @pf: board private structure
6294  **/
6295 static void i40e_verify_eeprom(struct i40e_pf *pf)
6296 {
6297         int err;
6298
6299         err = i40e_diag_eeprom_test(&pf->hw);
6300         if (err) {
6301                 /* retry in case of garbage read */
6302                 err = i40e_diag_eeprom_test(&pf->hw);
6303                 if (err) {
6304                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6305                                  err);
6306                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6307                 }
6308         }
6309
6310         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6311                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6312                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6313         }
6314 }
6315
6316 /**
6317  * i40e_enable_pf_switch_lb
6318  * @pf: pointer to the PF structure
6319  *
6320  * enable switch loop back or die - no point in a return value
6321  **/
6322 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6323 {
6324         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6325         struct i40e_vsi_context ctxt;
6326         int ret;
6327
6328         ctxt.seid = pf->main_vsi_seid;
6329         ctxt.pf_num = pf->hw.pf_id;
6330         ctxt.vf_num = 0;
6331         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6332         if (ret) {
6333                 dev_info(&pf->pdev->dev,
6334                          "couldn't get PF vsi config, err %s aq_err %s\n",
6335                          i40e_stat_str(&pf->hw, ret),
6336                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6337                 return;
6338         }
6339         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6340         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6341         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6342
6343         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6344         if (ret) {
6345                 dev_info(&pf->pdev->dev,
6346                          "update vsi switch failed, err %s aq_err %s\n",
6347                          i40e_stat_str(&pf->hw, ret),
6348                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6349         }
6350 }
6351
6352 /**
6353  * i40e_disable_pf_switch_lb
6354  * @pf: pointer to the PF structure
6355  *
6356  * disable switch loop back or die - no point in a return value
6357  **/
6358 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6359 {
6360         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6361         struct i40e_vsi_context ctxt;
6362         int ret;
6363
6364         ctxt.seid = pf->main_vsi_seid;
6365         ctxt.pf_num = pf->hw.pf_id;
6366         ctxt.vf_num = 0;
6367         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6368         if (ret) {
6369                 dev_info(&pf->pdev->dev,
6370                          "couldn't get PF vsi config, err %s aq_err %s\n",
6371                          i40e_stat_str(&pf->hw, ret),
6372                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6373                 return;
6374         }
6375         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6376         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6377         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6378
6379         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6380         if (ret) {
6381                 dev_info(&pf->pdev->dev,
6382                          "update vsi switch failed, err %s aq_err %s\n",
6383                          i40e_stat_str(&pf->hw, ret),
6384                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6385         }
6386 }
6387
6388 /**
6389  * i40e_config_bridge_mode - Configure the HW bridge mode
6390  * @veb: pointer to the bridge instance
6391  *
6392  * Configure the loop back mode for the LAN VSI that is downlink to the
6393  * specified HW bridge instance. It is expected this function is called
6394  * when a new HW bridge is instantiated.
6395  **/
6396 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6397 {
6398         struct i40e_pf *pf = veb->pf;
6399
6400         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6401                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6402                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6403         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6404                 i40e_disable_pf_switch_lb(pf);
6405         else
6406                 i40e_enable_pf_switch_lb(pf);
6407 }
6408
6409 /**
6410  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6411  * @veb: pointer to the VEB instance
6412  *
6413  * This is a recursive function that first builds the attached VSIs then
6414  * recurses in to build the next layer of VEB.  We track the connections
6415  * through our own index numbers because the seid's from the HW could
6416  * change across the reset.
6417  **/
6418 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6419 {
6420         struct i40e_vsi *ctl_vsi = NULL;
6421         struct i40e_pf *pf = veb->pf;
6422         int v, veb_idx;
6423         int ret;
6424
6425         /* build VSI that owns this VEB, temporarily attached to base VEB */
6426         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6427                 if (pf->vsi[v] &&
6428                     pf->vsi[v]->veb_idx == veb->idx &&
6429                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6430                         ctl_vsi = pf->vsi[v];
6431                         break;
6432                 }
6433         }
6434         if (!ctl_vsi) {
6435                 dev_info(&pf->pdev->dev,
6436                          "missing owner VSI for veb_idx %d\n", veb->idx);
6437                 ret = -ENOENT;
6438                 goto end_reconstitute;
6439         }
6440         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6441                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6442         ret = i40e_add_vsi(ctl_vsi);
6443         if (ret) {
6444                 dev_info(&pf->pdev->dev,
6445                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6446                          veb->idx, ret);
6447                 goto end_reconstitute;
6448         }
6449         i40e_vsi_reset_stats(ctl_vsi);
6450
6451         /* create the VEB in the switch and move the VSI onto the VEB */
6452         ret = i40e_add_veb(veb, ctl_vsi);
6453         if (ret)
6454                 goto end_reconstitute;
6455
6456         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6457                 veb->bridge_mode = BRIDGE_MODE_VEB;
6458         else
6459                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6460         i40e_config_bridge_mode(veb);
6461
6462         /* create the remaining VSIs attached to this VEB */
6463         for (v = 0; v < pf->num_alloc_vsi; v++) {
6464                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6465                         continue;
6466
6467                 if (pf->vsi[v]->veb_idx == veb->idx) {
6468                         struct i40e_vsi *vsi = pf->vsi[v];
6469
6470                         vsi->uplink_seid = veb->seid;
6471                         ret = i40e_add_vsi(vsi);
6472                         if (ret) {
6473                                 dev_info(&pf->pdev->dev,
6474                                          "rebuild of vsi_idx %d failed: %d\n",
6475                                          v, ret);
6476                                 goto end_reconstitute;
6477                         }
6478                         i40e_vsi_reset_stats(vsi);
6479                 }
6480         }
6481
6482         /* create any VEBs attached to this VEB - RECURSION */
6483         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6484                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6485                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6486                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6487                         if (ret)
6488                                 break;
6489                 }
6490         }
6491
6492 end_reconstitute:
6493         return ret;
6494 }
6495
6496 /**
6497  * i40e_get_capabilities - get info about the HW
6498  * @pf: the PF struct
6499  **/
6500 static int i40e_get_capabilities(struct i40e_pf *pf)
6501 {
6502         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6503         u16 data_size;
6504         int buf_len;
6505         int err;
6506
6507         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6508         do {
6509                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6510                 if (!cap_buf)
6511                         return -ENOMEM;
6512
6513                 /* this loads the data into the hw struct for us */
6514                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6515                                             &data_size,
6516                                             i40e_aqc_opc_list_func_capabilities,
6517                                             NULL);
6518                 /* data loaded, buffer no longer needed */
6519                 kfree(cap_buf);
6520
6521                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6522                         /* retry with a larger buffer */
6523                         buf_len = data_size;
6524                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6525                         dev_info(&pf->pdev->dev,
6526                                  "capability discovery failed, err %s aq_err %s\n",
6527                                  i40e_stat_str(&pf->hw, err),
6528                                  i40e_aq_str(&pf->hw,
6529                                              pf->hw.aq.asq_last_status));
6530                         return -ENODEV;
6531                 }
6532         } while (err);
6533
6534         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6535                 dev_info(&pf->pdev->dev,
6536                          "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",
6537                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6538                          pf->hw.func_caps.num_msix_vectors,
6539                          pf->hw.func_caps.num_msix_vectors_vf,
6540                          pf->hw.func_caps.fd_filters_guaranteed,
6541                          pf->hw.func_caps.fd_filters_best_effort,
6542                          pf->hw.func_caps.num_tx_qp,
6543                          pf->hw.func_caps.num_vsis);
6544
6545 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6546                        + pf->hw.func_caps.num_vfs)
6547         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6548                 dev_info(&pf->pdev->dev,
6549                          "got num_vsis %d, setting num_vsis to %d\n",
6550                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6551                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6552         }
6553
6554         return 0;
6555 }
6556
6557 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6558
6559 /**
6560  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6561  * @pf: board private structure
6562  **/
6563 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6564 {
6565         struct i40e_vsi *vsi;
6566         int i;
6567
6568         /* quick workaround for an NVM issue that leaves a critical register
6569          * uninitialized
6570          */
6571         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6572                 static const u32 hkey[] = {
6573                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6574                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6575                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6576                         0x95b3a76d};
6577
6578                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6579                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6580         }
6581
6582         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6583                 return;
6584
6585         /* find existing VSI and see if it needs configuring */
6586         vsi = NULL;
6587         for (i = 0; i < pf->num_alloc_vsi; i++) {
6588                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6589                         vsi = pf->vsi[i];
6590                         break;
6591                 }
6592         }
6593
6594         /* create a new VSI if none exists */
6595         if (!vsi) {
6596                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6597                                      pf->vsi[pf->lan_vsi]->seid, 0);
6598                 if (!vsi) {
6599                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6600                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6601                         return;
6602                 }
6603         }
6604
6605         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6606 }
6607
6608 /**
6609  * i40e_fdir_teardown - release the Flow Director resources
6610  * @pf: board private structure
6611  **/
6612 static void i40e_fdir_teardown(struct i40e_pf *pf)
6613 {
6614         int i;
6615
6616         i40e_fdir_filter_exit(pf);
6617         for (i = 0; i < pf->num_alloc_vsi; i++) {
6618                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6619                         i40e_vsi_release(pf->vsi[i]);
6620                         break;
6621                 }
6622         }
6623 }
6624
6625 /**
6626  * i40e_prep_for_reset - prep for the core to reset
6627  * @pf: board private structure
6628  *
6629  * Close up the VFs and other things in prep for PF Reset.
6630   **/
6631 static void i40e_prep_for_reset(struct i40e_pf *pf)
6632 {
6633         struct i40e_hw *hw = &pf->hw;
6634         i40e_status ret = 0;
6635         u32 v;
6636
6637         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6638         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6639                 return;
6640
6641         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6642
6643         /* quiesce the VSIs and their queues that are not already DOWN */
6644         i40e_pf_quiesce_all_vsi(pf);
6645
6646         for (v = 0; v < pf->num_alloc_vsi; v++) {
6647                 if (pf->vsi[v])
6648                         pf->vsi[v]->seid = 0;
6649         }
6650
6651         i40e_shutdown_adminq(&pf->hw);
6652
6653         /* call shutdown HMC */
6654         if (hw->hmc.hmc_obj) {
6655                 ret = i40e_shutdown_lan_hmc(hw);
6656                 if (ret)
6657                         dev_warn(&pf->pdev->dev,
6658                                  "shutdown_lan_hmc failed: %d\n", ret);
6659         }
6660 }
6661
6662 /**
6663  * i40e_send_version - update firmware with driver version
6664  * @pf: PF struct
6665  */
6666 static void i40e_send_version(struct i40e_pf *pf)
6667 {
6668         struct i40e_driver_version dv;
6669
6670         dv.major_version = DRV_VERSION_MAJOR;
6671         dv.minor_version = DRV_VERSION_MINOR;
6672         dv.build_version = DRV_VERSION_BUILD;
6673         dv.subbuild_version = 0;
6674         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6675         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6676 }
6677
6678 /**
6679  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6680  * @pf: board private structure
6681  * @reinit: if the Main VSI needs to re-initialized.
6682  **/
6683 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6684 {
6685         struct i40e_hw *hw = &pf->hw;
6686         u8 set_fc_aq_fail = 0;
6687         i40e_status ret;
6688         u32 v;
6689
6690         /* Now we wait for GRST to settle out.
6691          * We don't have to delete the VEBs or VSIs from the hw switch
6692          * because the reset will make them disappear.
6693          */
6694         ret = i40e_pf_reset(hw);
6695         if (ret) {
6696                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6697                 set_bit(__I40E_RESET_FAILED, &pf->state);
6698                 goto clear_recovery;
6699         }
6700         pf->pfr_count++;
6701
6702         if (test_bit(__I40E_DOWN, &pf->state))
6703                 goto clear_recovery;
6704         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6705
6706         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6707         ret = i40e_init_adminq(&pf->hw);
6708         if (ret) {
6709                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6710                          i40e_stat_str(&pf->hw, ret),
6711                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6712                 goto clear_recovery;
6713         }
6714
6715         /* re-verify the eeprom if we just had an EMP reset */
6716         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6717                 i40e_verify_eeprom(pf);
6718
6719         i40e_clear_pxe_mode(hw);
6720         ret = i40e_get_capabilities(pf);
6721         if (ret)
6722                 goto end_core_reset;
6723
6724         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6725                                 hw->func_caps.num_rx_qp,
6726                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6727         if (ret) {
6728                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6729                 goto end_core_reset;
6730         }
6731         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6732         if (ret) {
6733                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6734                 goto end_core_reset;
6735         }
6736
6737 #ifdef CONFIG_I40E_DCB
6738         ret = i40e_init_pf_dcb(pf);
6739         if (ret) {
6740                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6741                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6742                 /* Continue without DCB enabled */
6743         }
6744 #endif /* CONFIG_I40E_DCB */
6745 #ifdef I40E_FCOE
6746         i40e_init_pf_fcoe(pf);
6747
6748 #endif
6749         /* do basic switch setup */
6750         ret = i40e_setup_pf_switch(pf, reinit);
6751         if (ret)
6752                 goto end_core_reset;
6753
6754         /* driver is only interested in link up/down and module qualification
6755          * reports from firmware
6756          */
6757         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6758                                        I40E_AQ_EVENT_LINK_UPDOWN |
6759                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6760         if (ret)
6761                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6762                          i40e_stat_str(&pf->hw, ret),
6763                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6764
6765         /* make sure our flow control settings are restored */
6766         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6767         if (ret)
6768                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6769                         i40e_stat_str(&pf->hw, ret),
6770                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6771
6772         /* Rebuild the VSIs and VEBs that existed before reset.
6773          * They are still in our local switch element arrays, so only
6774          * need to rebuild the switch model in the HW.
6775          *
6776          * If there were VEBs but the reconstitution failed, we'll try
6777          * try to recover minimal use by getting the basic PF VSI working.
6778          */
6779         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6780                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6781                 /* find the one VEB connected to the MAC, and find orphans */
6782                 for (v = 0; v < I40E_MAX_VEB; v++) {
6783                         if (!pf->veb[v])
6784                                 continue;
6785
6786                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6787                             pf->veb[v]->uplink_seid == 0) {
6788                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6789
6790                                 if (!ret)
6791                                         continue;
6792
6793                                 /* If Main VEB failed, we're in deep doodoo,
6794                                  * so give up rebuilding the switch and set up
6795                                  * for minimal rebuild of PF VSI.
6796                                  * If orphan failed, we'll report the error
6797                                  * but try to keep going.
6798                                  */
6799                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6800                                         dev_info(&pf->pdev->dev,
6801                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6802                                                  ret);
6803                                         pf->vsi[pf->lan_vsi]->uplink_seid
6804                                                                 = pf->mac_seid;
6805                                         break;
6806                                 } else if (pf->veb[v]->uplink_seid == 0) {
6807                                         dev_info(&pf->pdev->dev,
6808                                                  "rebuild of orphan VEB failed: %d\n",
6809                                                  ret);
6810                                 }
6811                         }
6812                 }
6813         }
6814
6815         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6816                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6817                 /* no VEB, so rebuild only the Main VSI */
6818                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6819                 if (ret) {
6820                         dev_info(&pf->pdev->dev,
6821                                  "rebuild of Main VSI failed: %d\n", ret);
6822                         goto end_core_reset;
6823                 }
6824         }
6825
6826         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6827             (pf->hw.aq.fw_maj_ver < 4)) {
6828                 msleep(75);
6829                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6830                 if (ret)
6831                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6832                                  i40e_stat_str(&pf->hw, ret),
6833                                  i40e_aq_str(&pf->hw,
6834                                              pf->hw.aq.asq_last_status));
6835         }
6836         /* reinit the misc interrupt */
6837         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6838                 ret = i40e_setup_misc_vector(pf);
6839
6840         /* Add a filter to drop all Flow control frames from any VSI from being
6841          * transmitted. By doing so we stop a malicious VF from sending out
6842          * PAUSE or PFC frames and potentially controlling traffic for other
6843          * PF/VF VSIs.
6844          * The FW can still send Flow control frames if enabled.
6845          */
6846         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6847                                                        pf->main_vsi_seid);
6848
6849         /* restart the VSIs that were rebuilt and running before the reset */
6850         i40e_pf_unquiesce_all_vsi(pf);
6851
6852         if (pf->num_alloc_vfs) {
6853                 for (v = 0; v < pf->num_alloc_vfs; v++)
6854                         i40e_reset_vf(&pf->vf[v], true);
6855         }
6856
6857         /* tell the firmware that we're starting */
6858         i40e_send_version(pf);
6859
6860 end_core_reset:
6861         clear_bit(__I40E_RESET_FAILED, &pf->state);
6862 clear_recovery:
6863         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6864 }
6865
6866 /**
6867  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6868  * @pf: board private structure
6869  *
6870  * Close up the VFs and other things in prep for a Core Reset,
6871  * then get ready to rebuild the world.
6872  **/
6873 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6874 {
6875         i40e_prep_for_reset(pf);
6876         i40e_reset_and_rebuild(pf, false);
6877 }
6878
6879 /**
6880  * i40e_handle_mdd_event
6881  * @pf: pointer to the PF structure
6882  *
6883  * Called from the MDD irq handler to identify possibly malicious vfs
6884  **/
6885 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6886 {
6887         struct i40e_hw *hw = &pf->hw;
6888         bool mdd_detected = false;
6889         bool pf_mdd_detected = false;
6890         struct i40e_vf *vf;
6891         u32 reg;
6892         int i;
6893
6894         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6895                 return;
6896
6897         /* find what triggered the MDD event */
6898         reg = rd32(hw, I40E_GL_MDET_TX);
6899         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6900                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6901                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6902                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6903                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6904                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6905                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6906                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6907                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6908                                 pf->hw.func_caps.base_queue;
6909                 if (netif_msg_tx_err(pf))
6910                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6911                                  event, queue, pf_num, vf_num);
6912                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6913                 mdd_detected = true;
6914         }
6915         reg = rd32(hw, I40E_GL_MDET_RX);
6916         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6917                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6918                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6919                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6920                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6921                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6922                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6923                                 pf->hw.func_caps.base_queue;
6924                 if (netif_msg_rx_err(pf))
6925                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6926                                  event, queue, func);
6927                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6928                 mdd_detected = true;
6929         }
6930
6931         if (mdd_detected) {
6932                 reg = rd32(hw, I40E_PF_MDET_TX);
6933                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6934                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6935                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6936                         pf_mdd_detected = true;
6937                 }
6938                 reg = rd32(hw, I40E_PF_MDET_RX);
6939                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6940                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6941                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6942                         pf_mdd_detected = true;
6943                 }
6944                 /* Queue belongs to the PF, initiate a reset */
6945                 if (pf_mdd_detected) {
6946                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6947                         i40e_service_event_schedule(pf);
6948                 }
6949         }
6950
6951         /* see if one of the VFs needs its hand slapped */
6952         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6953                 vf = &(pf->vf[i]);
6954                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6955                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6956                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6957                         vf->num_mdd_events++;
6958                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6959                                  i);
6960                 }
6961
6962                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6963                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6964                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6965                         vf->num_mdd_events++;
6966                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6967                                  i);
6968                 }
6969
6970                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6971                         dev_info(&pf->pdev->dev,
6972                                  "Too many MDD events on VF %d, disabled\n", i);
6973                         dev_info(&pf->pdev->dev,
6974                                  "Use PF Control I/F to re-enable the VF\n");
6975                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6976                 }
6977         }
6978
6979         /* re-enable mdd interrupt cause */
6980         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6981         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6982         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6983         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6984         i40e_flush(hw);
6985 }
6986
6987 #ifdef CONFIG_I40E_VXLAN
6988 /**
6989  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6990  * @pf: board private structure
6991  **/
6992 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6993 {
6994         struct i40e_hw *hw = &pf->hw;
6995         i40e_status ret;
6996         __be16 port;
6997         int i;
6998
6999         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7000                 return;
7001
7002         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7003
7004         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7005                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7006                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7007                         port = pf->vxlan_ports[i];
7008                         if (port)
7009                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7010                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7011                                                      NULL, NULL);
7012                         else
7013                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7014
7015                         if (ret) {
7016                                 dev_info(&pf->pdev->dev,
7017                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7018                                          port ? "add" : "delete",
7019                                          ntohs(port), i,
7020                                          i40e_stat_str(&pf->hw, ret),
7021                                          i40e_aq_str(&pf->hw,
7022                                                     pf->hw.aq.asq_last_status));
7023                                 pf->vxlan_ports[i] = 0;
7024                         }
7025                 }
7026         }
7027 }
7028
7029 #endif
7030 /**
7031  * i40e_service_task - Run the driver's async subtasks
7032  * @work: pointer to work_struct containing our data
7033  **/
7034 static void i40e_service_task(struct work_struct *work)
7035 {
7036         struct i40e_pf *pf = container_of(work,
7037                                           struct i40e_pf,
7038                                           service_task);
7039         unsigned long start_time = jiffies;
7040
7041         /* don't bother with service tasks if a reset is in progress */
7042         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7043                 i40e_service_event_complete(pf);
7044                 return;
7045         }
7046
7047         i40e_detect_recover_hung(pf);
7048         i40e_reset_subtask(pf);
7049         i40e_handle_mdd_event(pf);
7050         i40e_vc_process_vflr_event(pf);
7051         i40e_watchdog_subtask(pf);
7052         i40e_fdir_reinit_subtask(pf);
7053         i40e_sync_filters_subtask(pf);
7054 #ifdef CONFIG_I40E_VXLAN
7055         i40e_sync_vxlan_filters_subtask(pf);
7056 #endif
7057         i40e_clean_adminq_subtask(pf);
7058
7059         i40e_service_event_complete(pf);
7060
7061         /* If the tasks have taken longer than one timer cycle or there
7062          * is more work to be done, reschedule the service task now
7063          * rather than wait for the timer to tick again.
7064          */
7065         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7066             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7067             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7068             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7069                 i40e_service_event_schedule(pf);
7070 }
7071
7072 /**
7073  * i40e_service_timer - timer callback
7074  * @data: pointer to PF struct
7075  **/
7076 static void i40e_service_timer(unsigned long data)
7077 {
7078         struct i40e_pf *pf = (struct i40e_pf *)data;
7079
7080         mod_timer(&pf->service_timer,
7081                   round_jiffies(jiffies + pf->service_timer_period));
7082         i40e_service_event_schedule(pf);
7083 }
7084
7085 /**
7086  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7087  * @vsi: the VSI being configured
7088  **/
7089 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7090 {
7091         struct i40e_pf *pf = vsi->back;
7092
7093         switch (vsi->type) {
7094         case I40E_VSI_MAIN:
7095                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7096                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7097                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7098                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7099                         vsi->num_q_vectors = pf->num_lan_msix;
7100                 else
7101                         vsi->num_q_vectors = 1;
7102
7103                 break;
7104
7105         case I40E_VSI_FDIR:
7106                 vsi->alloc_queue_pairs = 1;
7107                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7108                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7109                 vsi->num_q_vectors = 1;
7110                 break;
7111
7112         case I40E_VSI_VMDQ2:
7113                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7114                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7115                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7116                 vsi->num_q_vectors = pf->num_vmdq_msix;
7117                 break;
7118
7119         case I40E_VSI_SRIOV:
7120                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7121                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7122                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7123                 break;
7124
7125 #ifdef I40E_FCOE
7126         case I40E_VSI_FCOE:
7127                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7128                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7129                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7130                 vsi->num_q_vectors = pf->num_fcoe_msix;
7131                 break;
7132
7133 #endif /* I40E_FCOE */
7134         default:
7135                 WARN_ON(1);
7136                 return -ENODATA;
7137         }
7138
7139         return 0;
7140 }
7141
7142 /**
7143  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7144  * @type: VSI pointer
7145  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7146  *
7147  * On error: returns error code (negative)
7148  * On success: returns 0
7149  **/
7150 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7151 {
7152         int size;
7153         int ret = 0;
7154
7155         /* allocate memory for both Tx and Rx ring pointers */
7156         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7157         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7158         if (!vsi->tx_rings)
7159                 return -ENOMEM;
7160         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7161
7162         if (alloc_qvectors) {
7163                 /* allocate memory for q_vector pointers */
7164                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7165                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7166                 if (!vsi->q_vectors) {
7167                         ret = -ENOMEM;
7168                         goto err_vectors;
7169                 }
7170         }
7171         return ret;
7172
7173 err_vectors:
7174         kfree(vsi->tx_rings);
7175         return ret;
7176 }
7177
7178 /**
7179  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7180  * @pf: board private structure
7181  * @type: type of VSI
7182  *
7183  * On error: returns error code (negative)
7184  * On success: returns vsi index in PF (positive)
7185  **/
7186 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7187 {
7188         int ret = -ENODEV;
7189         struct i40e_vsi *vsi;
7190         int vsi_idx;
7191         int i;
7192
7193         /* Need to protect the allocation of the VSIs at the PF level */
7194         mutex_lock(&pf->switch_mutex);
7195
7196         /* VSI list may be fragmented if VSI creation/destruction has
7197          * been happening.  We can afford to do a quick scan to look
7198          * for any free VSIs in the list.
7199          *
7200          * find next empty vsi slot, looping back around if necessary
7201          */
7202         i = pf->next_vsi;
7203         while (i < pf->num_alloc_vsi && pf->vsi[i])
7204                 i++;
7205         if (i >= pf->num_alloc_vsi) {
7206                 i = 0;
7207                 while (i < pf->next_vsi && pf->vsi[i])
7208                         i++;
7209         }
7210
7211         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7212                 vsi_idx = i;             /* Found one! */
7213         } else {
7214                 ret = -ENODEV;
7215                 goto unlock_pf;  /* out of VSI slots! */
7216         }
7217         pf->next_vsi = ++i;
7218
7219         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7220         if (!vsi) {
7221                 ret = -ENOMEM;
7222                 goto unlock_pf;
7223         }
7224         vsi->type = type;
7225         vsi->back = pf;
7226         set_bit(__I40E_DOWN, &vsi->state);
7227         vsi->flags = 0;
7228         vsi->idx = vsi_idx;
7229         vsi->rx_itr_setting = pf->rx_itr_default;
7230         vsi->tx_itr_setting = pf->tx_itr_default;
7231         vsi->int_rate_limit = 0;
7232         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7233                                 pf->rss_table_size : 64;
7234         vsi->netdev_registered = false;
7235         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7236         INIT_LIST_HEAD(&vsi->mac_filter_list);
7237         vsi->irqs_ready = false;
7238
7239         ret = i40e_set_num_rings_in_vsi(vsi);
7240         if (ret)
7241                 goto err_rings;
7242
7243         ret = i40e_vsi_alloc_arrays(vsi, true);
7244         if (ret)
7245                 goto err_rings;
7246
7247         /* Setup default MSIX irq handler for VSI */
7248         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7249
7250         /* Initialize VSI lock */
7251         spin_lock_init(&vsi->mac_filter_list_lock);
7252         pf->vsi[vsi_idx] = vsi;
7253         ret = vsi_idx;
7254         goto unlock_pf;
7255
7256 err_rings:
7257         pf->next_vsi = i - 1;
7258         kfree(vsi);
7259 unlock_pf:
7260         mutex_unlock(&pf->switch_mutex);
7261         return ret;
7262 }
7263
7264 /**
7265  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7266  * @type: VSI pointer
7267  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7268  *
7269  * On error: returns error code (negative)
7270  * On success: returns 0
7271  **/
7272 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7273 {
7274         /* free the ring and vector containers */
7275         if (free_qvectors) {
7276                 kfree(vsi->q_vectors);
7277                 vsi->q_vectors = NULL;
7278         }
7279         kfree(vsi->tx_rings);
7280         vsi->tx_rings = NULL;
7281         vsi->rx_rings = NULL;
7282 }
7283
7284 /**
7285  * i40e_vsi_clear - Deallocate the VSI provided
7286  * @vsi: the VSI being un-configured
7287  **/
7288 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7289 {
7290         struct i40e_pf *pf;
7291
7292         if (!vsi)
7293                 return 0;
7294
7295         if (!vsi->back)
7296                 goto free_vsi;
7297         pf = vsi->back;
7298
7299         mutex_lock(&pf->switch_mutex);
7300         if (!pf->vsi[vsi->idx]) {
7301                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7302                         vsi->idx, vsi->idx, vsi, vsi->type);
7303                 goto unlock_vsi;
7304         }
7305
7306         if (pf->vsi[vsi->idx] != vsi) {
7307                 dev_err(&pf->pdev->dev,
7308                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7309                         pf->vsi[vsi->idx]->idx,
7310                         pf->vsi[vsi->idx],
7311                         pf->vsi[vsi->idx]->type,
7312                         vsi->idx, vsi, vsi->type);
7313                 goto unlock_vsi;
7314         }
7315
7316         /* updates the PF for this cleared vsi */
7317         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7318         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7319
7320         i40e_vsi_free_arrays(vsi, true);
7321
7322         pf->vsi[vsi->idx] = NULL;
7323         if (vsi->idx < pf->next_vsi)
7324                 pf->next_vsi = vsi->idx;
7325
7326 unlock_vsi:
7327         mutex_unlock(&pf->switch_mutex);
7328 free_vsi:
7329         kfree(vsi);
7330
7331         return 0;
7332 }
7333
7334 /**
7335  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7336  * @vsi: the VSI being cleaned
7337  **/
7338 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7339 {
7340         int i;
7341
7342         if (vsi->tx_rings && vsi->tx_rings[0]) {
7343                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7344                         kfree_rcu(vsi->tx_rings[i], rcu);
7345                         vsi->tx_rings[i] = NULL;
7346                         vsi->rx_rings[i] = NULL;
7347                 }
7348         }
7349 }
7350
7351 /**
7352  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7353  * @vsi: the VSI being configured
7354  **/
7355 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7356 {
7357         struct i40e_ring *tx_ring, *rx_ring;
7358         struct i40e_pf *pf = vsi->back;
7359         int i;
7360
7361         /* Set basic values in the rings to be used later during open() */
7362         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7363                 /* allocate space for both Tx and Rx in one shot */
7364                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7365                 if (!tx_ring)
7366                         goto err_out;
7367
7368                 tx_ring->queue_index = i;
7369                 tx_ring->reg_idx = vsi->base_queue + i;
7370                 tx_ring->ring_active = false;
7371                 tx_ring->vsi = vsi;
7372                 tx_ring->netdev = vsi->netdev;
7373                 tx_ring->dev = &pf->pdev->dev;
7374                 tx_ring->count = vsi->num_desc;
7375                 tx_ring->size = 0;
7376                 tx_ring->dcb_tc = 0;
7377                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7378                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7379                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7380                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7381                 vsi->tx_rings[i] = tx_ring;
7382
7383                 rx_ring = &tx_ring[1];
7384                 rx_ring->queue_index = i;
7385                 rx_ring->reg_idx = vsi->base_queue + i;
7386                 rx_ring->ring_active = false;
7387                 rx_ring->vsi = vsi;
7388                 rx_ring->netdev = vsi->netdev;
7389                 rx_ring->dev = &pf->pdev->dev;
7390                 rx_ring->count = vsi->num_desc;
7391                 rx_ring->size = 0;
7392                 rx_ring->dcb_tc = 0;
7393                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7394                         set_ring_16byte_desc_enabled(rx_ring);
7395                 else
7396                         clear_ring_16byte_desc_enabled(rx_ring);
7397                 vsi->rx_rings[i] = rx_ring;
7398         }
7399
7400         return 0;
7401
7402 err_out:
7403         i40e_vsi_clear_rings(vsi);
7404         return -ENOMEM;
7405 }
7406
7407 /**
7408  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7409  * @pf: board private structure
7410  * @vectors: the number of MSI-X vectors to request
7411  *
7412  * Returns the number of vectors reserved, or error
7413  **/
7414 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7415 {
7416         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7417                                         I40E_MIN_MSIX, vectors);
7418         if (vectors < 0) {
7419                 dev_info(&pf->pdev->dev,
7420                          "MSI-X vector reservation failed: %d\n", vectors);
7421                 vectors = 0;
7422         }
7423
7424         return vectors;
7425 }
7426
7427 /**
7428  * i40e_init_msix - Setup the MSIX capability
7429  * @pf: board private structure
7430  *
7431  * Work with the OS to set up the MSIX vectors needed.
7432  *
7433  * Returns the number of vectors reserved or negative on failure
7434  **/
7435 static int i40e_init_msix(struct i40e_pf *pf)
7436 {
7437         struct i40e_hw *hw = &pf->hw;
7438         int vectors_left;
7439         int v_budget, i;
7440         int v_actual;
7441
7442         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7443                 return -ENODEV;
7444
7445         /* The number of vectors we'll request will be comprised of:
7446          *   - Add 1 for "other" cause for Admin Queue events, etc.
7447          *   - The number of LAN queue pairs
7448          *      - Queues being used for RSS.
7449          *              We don't need as many as max_rss_size vectors.
7450          *              use rss_size instead in the calculation since that
7451          *              is governed by number of cpus in the system.
7452          *      - assumes symmetric Tx/Rx pairing
7453          *   - The number of VMDq pairs
7454 #ifdef I40E_FCOE
7455          *   - The number of FCOE qps.
7456 #endif
7457          * Once we count this up, try the request.
7458          *
7459          * If we can't get what we want, we'll simplify to nearly nothing
7460          * and try again.  If that still fails, we punt.
7461          */
7462         vectors_left = hw->func_caps.num_msix_vectors;
7463         v_budget = 0;
7464
7465         /* reserve one vector for miscellaneous handler */
7466         if (vectors_left) {
7467                 v_budget++;
7468                 vectors_left--;
7469         }
7470
7471         /* reserve vectors for the main PF traffic queues */
7472         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7473         vectors_left -= pf->num_lan_msix;
7474         v_budget += pf->num_lan_msix;
7475
7476         /* reserve one vector for sideband flow director */
7477         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7478                 if (vectors_left) {
7479                         v_budget++;
7480                         vectors_left--;
7481                 } else {
7482                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7483                 }
7484         }
7485
7486 #ifdef I40E_FCOE
7487         /* can we reserve enough for FCoE? */
7488         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7489                 if (!vectors_left)
7490                         pf->num_fcoe_msix = 0;
7491                 else if (vectors_left >= pf->num_fcoe_qps)
7492                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7493                 else
7494                         pf->num_fcoe_msix = 1;
7495                 v_budget += pf->num_fcoe_msix;
7496                 vectors_left -= pf->num_fcoe_msix;
7497         }
7498
7499 #endif
7500         /* any vectors left over go for VMDq support */
7501         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7502                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7503                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7504
7505                 /* if we're short on vectors for what's desired, we limit
7506                  * the queues per vmdq.  If this is still more than are
7507                  * available, the user will need to change the number of
7508                  * queues/vectors used by the PF later with the ethtool
7509                  * channels command
7510                  */
7511                 if (vmdq_vecs < vmdq_vecs_wanted)
7512                         pf->num_vmdq_qps = 1;
7513                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7514
7515                 v_budget += vmdq_vecs;
7516                 vectors_left -= vmdq_vecs;
7517         }
7518
7519         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7520                                    GFP_KERNEL);
7521         if (!pf->msix_entries)
7522                 return -ENOMEM;
7523
7524         for (i = 0; i < v_budget; i++)
7525                 pf->msix_entries[i].entry = i;
7526         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7527
7528         if (v_actual != v_budget) {
7529                 /* If we have limited resources, we will start with no vectors
7530                  * for the special features and then allocate vectors to some
7531                  * of these features based on the policy and at the end disable
7532                  * the features that did not get any vectors.
7533                  */
7534 #ifdef I40E_FCOE
7535                 pf->num_fcoe_qps = 0;
7536                 pf->num_fcoe_msix = 0;
7537 #endif
7538                 pf->num_vmdq_msix = 0;
7539         }
7540
7541         if (v_actual < I40E_MIN_MSIX) {
7542                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7543                 kfree(pf->msix_entries);
7544                 pf->msix_entries = NULL;
7545                 return -ENODEV;
7546
7547         } else if (v_actual == I40E_MIN_MSIX) {
7548                 /* Adjust for minimal MSIX use */
7549                 pf->num_vmdq_vsis = 0;
7550                 pf->num_vmdq_qps = 0;
7551                 pf->num_lan_qps = 1;
7552                 pf->num_lan_msix = 1;
7553
7554         } else if (v_actual != v_budget) {
7555                 int vec;
7556
7557                 /* reserve the misc vector */
7558                 vec = v_actual - 1;
7559
7560                 /* Scale vector usage down */
7561                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7562                 pf->num_vmdq_vsis = 1;
7563                 pf->num_vmdq_qps = 1;
7564                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7565
7566                 /* partition out the remaining vectors */
7567                 switch (vec) {
7568                 case 2:
7569                         pf->num_lan_msix = 1;
7570                         break;
7571                 case 3:
7572 #ifdef I40E_FCOE
7573                         /* give one vector to FCoE */
7574                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7575                                 pf->num_lan_msix = 1;
7576                                 pf->num_fcoe_msix = 1;
7577                         }
7578 #else
7579                         pf->num_lan_msix = 2;
7580 #endif
7581                         break;
7582                 default:
7583 #ifdef I40E_FCOE
7584                         /* give one vector to FCoE */
7585                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7586                                 pf->num_fcoe_msix = 1;
7587                                 vec--;
7588                         }
7589 #endif
7590                         /* give the rest to the PF */
7591                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7592                         break;
7593                 }
7594         }
7595
7596         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7597             (pf->num_vmdq_msix == 0)) {
7598                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7599                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7600         }
7601 #ifdef I40E_FCOE
7602
7603         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7604                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7605                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7606         }
7607 #endif
7608         return v_actual;
7609 }
7610
7611 /**
7612  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7613  * @vsi: the VSI being configured
7614  * @v_idx: index of the vector in the vsi struct
7615  *
7616  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7617  **/
7618 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7619 {
7620         struct i40e_q_vector *q_vector;
7621
7622         /* allocate q_vector */
7623         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7624         if (!q_vector)
7625                 return -ENOMEM;
7626
7627         q_vector->vsi = vsi;
7628         q_vector->v_idx = v_idx;
7629         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7630         if (vsi->netdev)
7631                 netif_napi_add(vsi->netdev, &q_vector->napi,
7632                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7633
7634         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7635         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7636
7637         /* tie q_vector and vsi together */
7638         vsi->q_vectors[v_idx] = q_vector;
7639
7640         return 0;
7641 }
7642
7643 /**
7644  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7645  * @vsi: the VSI being configured
7646  *
7647  * We allocate one q_vector per queue interrupt.  If allocation fails we
7648  * return -ENOMEM.
7649  **/
7650 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7651 {
7652         struct i40e_pf *pf = vsi->back;
7653         int v_idx, num_q_vectors;
7654         int err;
7655
7656         /* if not MSIX, give the one vector only to the LAN VSI */
7657         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7658                 num_q_vectors = vsi->num_q_vectors;
7659         else if (vsi == pf->vsi[pf->lan_vsi])
7660                 num_q_vectors = 1;
7661         else
7662                 return -EINVAL;
7663
7664         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7665                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7666                 if (err)
7667                         goto err_out;
7668         }
7669
7670         return 0;
7671
7672 err_out:
7673         while (v_idx--)
7674                 i40e_free_q_vector(vsi, v_idx);
7675
7676         return err;
7677 }
7678
7679 /**
7680  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7681  * @pf: board private structure to initialize
7682  **/
7683 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7684 {
7685         int vectors = 0;
7686         ssize_t size;
7687
7688         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7689                 vectors = i40e_init_msix(pf);
7690                 if (vectors < 0) {
7691                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7692 #ifdef I40E_FCOE
7693                                        I40E_FLAG_FCOE_ENABLED   |
7694 #endif
7695                                        I40E_FLAG_RSS_ENABLED    |
7696                                        I40E_FLAG_DCB_CAPABLE    |
7697                                        I40E_FLAG_SRIOV_ENABLED  |
7698                                        I40E_FLAG_FD_SB_ENABLED  |
7699                                        I40E_FLAG_FD_ATR_ENABLED |
7700                                        I40E_FLAG_VMDQ_ENABLED);
7701
7702                         /* rework the queue expectations without MSIX */
7703                         i40e_determine_queue_usage(pf);
7704                 }
7705         }
7706
7707         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7708             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7709                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7710                 vectors = pci_enable_msi(pf->pdev);
7711                 if (vectors < 0) {
7712                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7713                                  vectors);
7714                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7715                 }
7716                 vectors = 1;  /* one MSI or Legacy vector */
7717         }
7718
7719         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7720                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7721
7722         /* set up vector assignment tracking */
7723         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7724         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7725         if (!pf->irq_pile) {
7726                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7727                 return -ENOMEM;
7728         }
7729         pf->irq_pile->num_entries = vectors;
7730         pf->irq_pile->search_hint = 0;
7731
7732         /* track first vector for misc interrupts, ignore return */
7733         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7734
7735         return 0;
7736 }
7737
7738 /**
7739  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7740  * @pf: board private structure
7741  *
7742  * This sets up the handler for MSIX 0, which is used to manage the
7743  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7744  * when in MSI or Legacy interrupt mode.
7745  **/
7746 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7747 {
7748         struct i40e_hw *hw = &pf->hw;
7749         int err = 0;
7750
7751         /* Only request the irq if this is the first time through, and
7752          * not when we're rebuilding after a Reset
7753          */
7754         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7755                 err = request_irq(pf->msix_entries[0].vector,
7756                                   i40e_intr, 0, pf->int_name, pf);
7757                 if (err) {
7758                         dev_info(&pf->pdev->dev,
7759                                  "request_irq for %s failed: %d\n",
7760                                  pf->int_name, err);
7761                         return -EFAULT;
7762                 }
7763         }
7764
7765         i40e_enable_misc_int_causes(pf);
7766
7767         /* associate no queues to the misc vector */
7768         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7769         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7770
7771         i40e_flush(hw);
7772
7773         i40e_irq_dynamic_enable_icr0(pf);
7774
7775         return err;
7776 }
7777
7778 /**
7779  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7780  * @vsi: vsi structure
7781  * @seed: RSS hash seed
7782  **/
7783 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7784 {
7785         struct i40e_aqc_get_set_rss_key_data rss_key;
7786         struct i40e_pf *pf = vsi->back;
7787         struct i40e_hw *hw = &pf->hw;
7788         bool pf_lut = false;
7789         u8 *rss_lut;
7790         int ret, i;
7791
7792         memset(&rss_key, 0, sizeof(rss_key));
7793         memcpy(&rss_key, seed, sizeof(rss_key));
7794
7795         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7796         if (!rss_lut)
7797                 return -ENOMEM;
7798
7799         /* Populate the LUT with max no. of queues in round robin fashion */
7800         for (i = 0; i < vsi->rss_table_size; i++)
7801                 rss_lut[i] = i % vsi->rss_size;
7802
7803         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7804         if (ret) {
7805                 dev_info(&pf->pdev->dev,
7806                          "Cannot set RSS key, err %s aq_err %s\n",
7807                          i40e_stat_str(&pf->hw, ret),
7808                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7809                 goto config_rss_aq_out;
7810         }
7811
7812         if (vsi->type == I40E_VSI_MAIN)
7813                 pf_lut = true;
7814
7815         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7816                                   vsi->rss_table_size);
7817         if (ret)
7818                 dev_info(&pf->pdev->dev,
7819                          "Cannot set RSS lut, err %s aq_err %s\n",
7820                          i40e_stat_str(&pf->hw, ret),
7821                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7822
7823 config_rss_aq_out:
7824         kfree(rss_lut);
7825         return ret;
7826 }
7827
7828 /**
7829  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7830  * @vsi: VSI structure
7831  **/
7832 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7833 {
7834         u8 seed[I40E_HKEY_ARRAY_SIZE];
7835         struct i40e_pf *pf = vsi->back;
7836
7837         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7838         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7839
7840         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7841                 return i40e_config_rss_aq(vsi, seed);
7842
7843         return 0;
7844 }
7845
7846 /**
7847  * i40e_config_rss_reg - Prepare for RSS if used
7848  * @pf: board private structure
7849  * @seed: RSS hash seed
7850  **/
7851 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7852 {
7853         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7854         struct i40e_hw *hw = &pf->hw;
7855         u32 *seed_dw = (u32 *)seed;
7856         u32 current_queue = 0;
7857         u32 lut = 0;
7858         int i, j;
7859
7860         /* Fill out hash function seed */
7861         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7862                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7863
7864         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7865                 lut = 0;
7866                 for (j = 0; j < 4; j++) {
7867                         if (current_queue == vsi->rss_size)
7868                                 current_queue = 0;
7869                         lut |= ((current_queue) << (8 * j));
7870                         current_queue++;
7871                 }
7872                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7873         }
7874         i40e_flush(hw);
7875
7876         return 0;
7877 }
7878
7879 /**
7880  * i40e_config_rss - Prepare for RSS if used
7881  * @pf: board private structure
7882  **/
7883 static int i40e_config_rss(struct i40e_pf *pf)
7884 {
7885         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7886         u8 seed[I40E_HKEY_ARRAY_SIZE];
7887         struct i40e_hw *hw = &pf->hw;
7888         u32 reg_val;
7889         u64 hena;
7890
7891         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7892
7893         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7894         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7895                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7896         hena |= i40e_pf_get_default_rss_hena(pf);
7897
7898         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7899         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7900
7901         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7902
7903         /* Determine the RSS table size based on the hardware capabilities */
7904         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7905         reg_val = (pf->rss_table_size == 512) ?
7906                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7907                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7908         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7909
7910         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7911                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7912         else
7913                 return i40e_config_rss_reg(pf, seed);
7914 }
7915
7916 /**
7917  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7918  * @pf: board private structure
7919  * @queue_count: the requested queue count for rss.
7920  *
7921  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7922  * count which may be different from the requested queue count.
7923  **/
7924 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7925 {
7926         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7927         int new_rss_size;
7928
7929         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7930                 return 0;
7931
7932         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7933
7934         if (queue_count != vsi->num_queue_pairs) {
7935                 vsi->req_queue_pairs = queue_count;
7936                 i40e_prep_for_reset(pf);
7937
7938                 pf->rss_size = new_rss_size;
7939
7940                 i40e_reset_and_rebuild(pf, true);
7941                 i40e_config_rss(pf);
7942         }
7943         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7944         return pf->rss_size;
7945 }
7946
7947 /**
7948  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7949  * @pf: board private structure
7950  **/
7951 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7952 {
7953         i40e_status status;
7954         bool min_valid, max_valid;
7955         u32 max_bw, min_bw;
7956
7957         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7958                                            &min_valid, &max_valid);
7959
7960         if (!status) {
7961                 if (min_valid)
7962                         pf->npar_min_bw = min_bw;
7963                 if (max_valid)
7964                         pf->npar_max_bw = max_bw;
7965         }
7966
7967         return status;
7968 }
7969
7970 /**
7971  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7972  * @pf: board private structure
7973  **/
7974 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7975 {
7976         struct i40e_aqc_configure_partition_bw_data bw_data;
7977         i40e_status status;
7978
7979         /* Set the valid bit for this PF */
7980         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7981         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7982         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7983
7984         /* Set the new bandwidths */
7985         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7986
7987         return status;
7988 }
7989
7990 /**
7991  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7992  * @pf: board private structure
7993  **/
7994 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7995 {
7996         /* Commit temporary BW setting to permanent NVM image */
7997         enum i40e_admin_queue_err last_aq_status;
7998         i40e_status ret;
7999         u16 nvm_word;
8000
8001         if (pf->hw.partition_id != 1) {
8002                 dev_info(&pf->pdev->dev,
8003                          "Commit BW only works on partition 1! This is partition %d",
8004                          pf->hw.partition_id);
8005                 ret = I40E_NOT_SUPPORTED;
8006                 goto bw_commit_out;
8007         }
8008
8009         /* Acquire NVM for read access */
8010         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8011         last_aq_status = pf->hw.aq.asq_last_status;
8012         if (ret) {
8013                 dev_info(&pf->pdev->dev,
8014                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8015                          i40e_stat_str(&pf->hw, ret),
8016                          i40e_aq_str(&pf->hw, last_aq_status));
8017                 goto bw_commit_out;
8018         }
8019
8020         /* Read word 0x10 of NVM - SW compatibility word 1 */
8021         ret = i40e_aq_read_nvm(&pf->hw,
8022                                I40E_SR_NVM_CONTROL_WORD,
8023                                0x10, sizeof(nvm_word), &nvm_word,
8024                                false, NULL);
8025         /* Save off last admin queue command status before releasing
8026          * the NVM
8027          */
8028         last_aq_status = pf->hw.aq.asq_last_status;
8029         i40e_release_nvm(&pf->hw);
8030         if (ret) {
8031                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8032                          i40e_stat_str(&pf->hw, ret),
8033                          i40e_aq_str(&pf->hw, last_aq_status));
8034                 goto bw_commit_out;
8035         }
8036
8037         /* Wait a bit for NVM release to complete */
8038         msleep(50);
8039
8040         /* Acquire NVM for write access */
8041         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8042         last_aq_status = pf->hw.aq.asq_last_status;
8043         if (ret) {
8044                 dev_info(&pf->pdev->dev,
8045                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8046                          i40e_stat_str(&pf->hw, ret),
8047                          i40e_aq_str(&pf->hw, last_aq_status));
8048                 goto bw_commit_out;
8049         }
8050         /* Write it back out unchanged to initiate update NVM,
8051          * which will force a write of the shadow (alt) RAM to
8052          * the NVM - thus storing the bandwidth values permanently.
8053          */
8054         ret = i40e_aq_update_nvm(&pf->hw,
8055                                  I40E_SR_NVM_CONTROL_WORD,
8056                                  0x10, sizeof(nvm_word),
8057                                  &nvm_word, true, NULL);
8058         /* Save off last admin queue command status before releasing
8059          * the NVM
8060          */
8061         last_aq_status = pf->hw.aq.asq_last_status;
8062         i40e_release_nvm(&pf->hw);
8063         if (ret)
8064                 dev_info(&pf->pdev->dev,
8065                          "BW settings NOT SAVED, err %s aq_err %s\n",
8066                          i40e_stat_str(&pf->hw, ret),
8067                          i40e_aq_str(&pf->hw, last_aq_status));
8068 bw_commit_out:
8069
8070         return ret;
8071 }
8072
8073 /**
8074  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8075  * @pf: board private structure to initialize
8076  *
8077  * i40e_sw_init initializes the Adapter private data structure.
8078  * Fields are initialized based on PCI device information and
8079  * OS network device settings (MTU size).
8080  **/
8081 static int i40e_sw_init(struct i40e_pf *pf)
8082 {
8083         int err = 0;
8084         int size;
8085
8086         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8087                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8088         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8089         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8090                 if (I40E_DEBUG_USER & debug)
8091                         pf->hw.debug_mask = debug;
8092                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8093                                                 I40E_DEFAULT_MSG_ENABLE);
8094         }
8095
8096         /* Set default capability flags */
8097         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8098                     I40E_FLAG_MSI_ENABLED     |
8099                     I40E_FLAG_LINK_POLLING_ENABLED |
8100                     I40E_FLAG_MSIX_ENABLED;
8101
8102         if (iommu_present(&pci_bus_type))
8103                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8104         else
8105                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8106
8107         /* Set default ITR */
8108         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8109         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8110
8111         /* Depending on PF configurations, it is possible that the RSS
8112          * maximum might end up larger than the available queues
8113          */
8114         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8115         pf->rss_size = 1;
8116         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8117         pf->rss_size_max = min_t(int, pf->rss_size_max,
8118                                  pf->hw.func_caps.num_tx_qp);
8119         if (pf->hw.func_caps.rss) {
8120                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8121                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
8122         }
8123
8124         /* MFP mode enabled */
8125         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8126                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8127                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8128                 if (i40e_get_npar_bw_setting(pf))
8129                         dev_warn(&pf->pdev->dev,
8130                                  "Could not get NPAR bw settings\n");
8131                 else
8132                         dev_info(&pf->pdev->dev,
8133                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8134                                  pf->npar_min_bw, pf->npar_max_bw);
8135         }
8136
8137         /* FW/NVM is not yet fixed in this regard */
8138         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8139             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8140                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8141                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8142                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8143                     pf->hw.num_partitions > 1)
8144                         dev_info(&pf->pdev->dev,
8145                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8146                 else
8147                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8148                 pf->fdir_pf_filter_count =
8149                                  pf->hw.func_caps.fd_filters_guaranteed;
8150                 pf->hw.fdir_shared_filter_count =
8151                                  pf->hw.func_caps.fd_filters_best_effort;
8152         }
8153
8154         if (pf->hw.func_caps.vmdq) {
8155                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8156                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8157                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8158         }
8159
8160 #ifdef I40E_FCOE
8161         i40e_init_pf_fcoe(pf);
8162
8163 #endif /* I40E_FCOE */
8164 #ifdef CONFIG_PCI_IOV
8165         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8166                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8167                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8168                 pf->num_req_vfs = min_t(int,
8169                                         pf->hw.func_caps.num_vfs,
8170                                         I40E_MAX_VF_COUNT);
8171         }
8172 #endif /* CONFIG_PCI_IOV */
8173         if (pf->hw.mac.type == I40E_MAC_X722) {
8174                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8175                              I40E_FLAG_128_QP_RSS_CAPABLE |
8176                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8177                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8178                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8179                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8180         }
8181         pf->eeprom_version = 0xDEAD;
8182         pf->lan_veb = I40E_NO_VEB;
8183         pf->lan_vsi = I40E_NO_VSI;
8184
8185         /* By default FW has this off for performance reasons */
8186         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8187
8188         /* set up queue assignment tracking */
8189         size = sizeof(struct i40e_lump_tracking)
8190                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8191         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8192         if (!pf->qp_pile) {
8193                 err = -ENOMEM;
8194                 goto sw_init_done;
8195         }
8196         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8197         pf->qp_pile->search_hint = 0;
8198
8199         pf->tx_timeout_recovery_level = 1;
8200
8201         mutex_init(&pf->switch_mutex);
8202
8203         /* If NPAR is enabled nudge the Tx scheduler */
8204         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8205                 i40e_set_npar_bw_setting(pf);
8206
8207 sw_init_done:
8208         return err;
8209 }
8210
8211 /**
8212  * i40e_set_ntuple - set the ntuple feature flag and take action
8213  * @pf: board private structure to initialize
8214  * @features: the feature set that the stack is suggesting
8215  *
8216  * returns a bool to indicate if reset needs to happen
8217  **/
8218 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8219 {
8220         bool need_reset = false;
8221
8222         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8223          * the state changed, we need to reset.
8224          */
8225         if (features & NETIF_F_NTUPLE) {
8226                 /* Enable filters and mark for reset */
8227                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8228                         need_reset = true;
8229                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8230         } else {
8231                 /* turn off filters, mark for reset and clear SW filter list */
8232                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8233                         need_reset = true;
8234                         i40e_fdir_filter_exit(pf);
8235                 }
8236                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8237                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8238                 /* reset fd counters */
8239                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8240                 pf->fdir_pf_active_filters = 0;
8241                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8242                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8243                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8244                 /* if ATR was auto disabled it can be re-enabled. */
8245                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8246                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8247                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8248         }
8249         return need_reset;
8250 }
8251
8252 /**
8253  * i40e_set_features - set the netdev feature flags
8254  * @netdev: ptr to the netdev being adjusted
8255  * @features: the feature set that the stack is suggesting
8256  **/
8257 static int i40e_set_features(struct net_device *netdev,
8258                              netdev_features_t features)
8259 {
8260         struct i40e_netdev_priv *np = netdev_priv(netdev);
8261         struct i40e_vsi *vsi = np->vsi;
8262         struct i40e_pf *pf = vsi->back;
8263         bool need_reset;
8264
8265         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8266                 i40e_vlan_stripping_enable(vsi);
8267         else
8268                 i40e_vlan_stripping_disable(vsi);
8269
8270         need_reset = i40e_set_ntuple(pf, features);
8271
8272         if (need_reset)
8273                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8274
8275         return 0;
8276 }
8277
8278 #ifdef CONFIG_I40E_VXLAN
8279 /**
8280  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8281  * @pf: board private structure
8282  * @port: The UDP port to look up
8283  *
8284  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8285  **/
8286 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8287 {
8288         u8 i;
8289
8290         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8291                 if (pf->vxlan_ports[i] == port)
8292                         return i;
8293         }
8294
8295         return i;
8296 }
8297
8298 /**
8299  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8300  * @netdev: This physical port's netdev
8301  * @sa_family: Socket Family that VXLAN is notifying us about
8302  * @port: New UDP port number that VXLAN started listening to
8303  **/
8304 static void i40e_add_vxlan_port(struct net_device *netdev,
8305                                 sa_family_t sa_family, __be16 port)
8306 {
8307         struct i40e_netdev_priv *np = netdev_priv(netdev);
8308         struct i40e_vsi *vsi = np->vsi;
8309         struct i40e_pf *pf = vsi->back;
8310         u8 next_idx;
8311         u8 idx;
8312
8313         if (sa_family == AF_INET6)
8314                 return;
8315
8316         idx = i40e_get_vxlan_port_idx(pf, port);
8317
8318         /* Check if port already exists */
8319         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8320                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8321                             ntohs(port));
8322                 return;
8323         }
8324
8325         /* Now check if there is space to add the new port */
8326         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8327
8328         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8329                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8330                             ntohs(port));
8331                 return;
8332         }
8333
8334         /* New port: add it and mark its index in the bitmap */
8335         pf->vxlan_ports[next_idx] = port;
8336         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8337         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8338 }
8339
8340 /**
8341  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8342  * @netdev: This physical port's netdev
8343  * @sa_family: Socket Family that VXLAN is notifying us about
8344  * @port: UDP port number that VXLAN stopped listening to
8345  **/
8346 static void i40e_del_vxlan_port(struct net_device *netdev,
8347                                 sa_family_t sa_family, __be16 port)
8348 {
8349         struct i40e_netdev_priv *np = netdev_priv(netdev);
8350         struct i40e_vsi *vsi = np->vsi;
8351         struct i40e_pf *pf = vsi->back;
8352         u8 idx;
8353
8354         if (sa_family == AF_INET6)
8355                 return;
8356
8357         idx = i40e_get_vxlan_port_idx(pf, port);
8358
8359         /* Check if port already exists */
8360         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8361                 /* if port exists, set it to 0 (mark for deletion)
8362                  * and make it pending
8363                  */
8364                 pf->vxlan_ports[idx] = 0;
8365                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8366                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8367         } else {
8368                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8369                             ntohs(port));
8370         }
8371 }
8372
8373 #endif
8374 static int i40e_get_phys_port_id(struct net_device *netdev,
8375                                  struct netdev_phys_item_id *ppid)
8376 {
8377         struct i40e_netdev_priv *np = netdev_priv(netdev);
8378         struct i40e_pf *pf = np->vsi->back;
8379         struct i40e_hw *hw = &pf->hw;
8380
8381         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8382                 return -EOPNOTSUPP;
8383
8384         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8385         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8386
8387         return 0;
8388 }
8389
8390 /**
8391  * i40e_ndo_fdb_add - add an entry to the hardware database
8392  * @ndm: the input from the stack
8393  * @tb: pointer to array of nladdr (unused)
8394  * @dev: the net device pointer
8395  * @addr: the MAC address entry being added
8396  * @flags: instructions from stack about fdb operation
8397  */
8398 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8399                             struct net_device *dev,
8400                             const unsigned char *addr, u16 vid,
8401                             u16 flags)
8402 {
8403         struct i40e_netdev_priv *np = netdev_priv(dev);
8404         struct i40e_pf *pf = np->vsi->back;
8405         int err = 0;
8406
8407         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8408                 return -EOPNOTSUPP;
8409
8410         if (vid) {
8411                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8412                 return -EINVAL;
8413         }
8414
8415         /* Hardware does not support aging addresses so if a
8416          * ndm_state is given only allow permanent addresses
8417          */
8418         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8419                 netdev_info(dev, "FDB only supports static addresses\n");
8420                 return -EINVAL;
8421         }
8422
8423         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8424                 err = dev_uc_add_excl(dev, addr);
8425         else if (is_multicast_ether_addr(addr))
8426                 err = dev_mc_add_excl(dev, addr);
8427         else
8428                 err = -EINVAL;
8429
8430         /* Only return duplicate errors if NLM_F_EXCL is set */
8431         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8432                 err = 0;
8433
8434         return err;
8435 }
8436
8437 /**
8438  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8439  * @dev: the netdev being configured
8440  * @nlh: RTNL message
8441  *
8442  * Inserts a new hardware bridge if not already created and
8443  * enables the bridging mode requested (VEB or VEPA). If the
8444  * hardware bridge has already been inserted and the request
8445  * is to change the mode then that requires a PF reset to
8446  * allow rebuild of the components with required hardware
8447  * bridge mode enabled.
8448  **/
8449 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8450                                    struct nlmsghdr *nlh,
8451                                    u16 flags)
8452 {
8453         struct i40e_netdev_priv *np = netdev_priv(dev);
8454         struct i40e_vsi *vsi = np->vsi;
8455         struct i40e_pf *pf = vsi->back;
8456         struct i40e_veb *veb = NULL;
8457         struct nlattr *attr, *br_spec;
8458         int i, rem;
8459
8460         /* Only for PF VSI for now */
8461         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8462                 return -EOPNOTSUPP;
8463
8464         /* Find the HW bridge for PF VSI */
8465         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8466                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8467                         veb = pf->veb[i];
8468         }
8469
8470         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8471
8472         nla_for_each_nested(attr, br_spec, rem) {
8473                 __u16 mode;
8474
8475                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8476                         continue;
8477
8478                 mode = nla_get_u16(attr);
8479                 if ((mode != BRIDGE_MODE_VEPA) &&
8480                     (mode != BRIDGE_MODE_VEB))
8481                         return -EINVAL;
8482
8483                 /* Insert a new HW bridge */
8484                 if (!veb) {
8485                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8486                                              vsi->tc_config.enabled_tc);
8487                         if (veb) {
8488                                 veb->bridge_mode = mode;
8489                                 i40e_config_bridge_mode(veb);
8490                         } else {
8491                                 /* No Bridge HW offload available */
8492                                 return -ENOENT;
8493                         }
8494                         break;
8495                 } else if (mode != veb->bridge_mode) {
8496                         /* Existing HW bridge but different mode needs reset */
8497                         veb->bridge_mode = mode;
8498                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8499                         if (mode == BRIDGE_MODE_VEB)
8500                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8501                         else
8502                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8503                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8504                         break;
8505                 }
8506         }
8507
8508         return 0;
8509 }
8510
8511 /**
8512  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8513  * @skb: skb buff
8514  * @pid: process id
8515  * @seq: RTNL message seq #
8516  * @dev: the netdev being configured
8517  * @filter_mask: unused
8518  * @nlflags: netlink flags passed in
8519  *
8520  * Return the mode in which the hardware bridge is operating in
8521  * i.e VEB or VEPA.
8522  **/
8523 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8524                                    struct net_device *dev,
8525                                    u32 __always_unused filter_mask,
8526                                    int nlflags)
8527 {
8528         struct i40e_netdev_priv *np = netdev_priv(dev);
8529         struct i40e_vsi *vsi = np->vsi;
8530         struct i40e_pf *pf = vsi->back;
8531         struct i40e_veb *veb = NULL;
8532         int i;
8533
8534         /* Only for PF VSI for now */
8535         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8536                 return -EOPNOTSUPP;
8537
8538         /* Find the HW bridge for the PF VSI */
8539         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8540                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8541                         veb = pf->veb[i];
8542         }
8543
8544         if (!veb)
8545                 return 0;
8546
8547         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8548                                        nlflags, 0, 0, filter_mask, NULL);
8549 }
8550
8551 #define I40E_MAX_TUNNEL_HDR_LEN 80
8552 /**
8553  * i40e_features_check - Validate encapsulated packet conforms to limits
8554  * @skb: skb buff
8555  * @dev: This physical port's netdev
8556  * @features: Offload features that the stack believes apply
8557  **/
8558 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8559                                              struct net_device *dev,
8560                                              netdev_features_t features)
8561 {
8562         if (skb->encapsulation &&
8563             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8564              I40E_MAX_TUNNEL_HDR_LEN))
8565                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8566
8567         return features;
8568 }
8569
8570 static const struct net_device_ops i40e_netdev_ops = {
8571         .ndo_open               = i40e_open,
8572         .ndo_stop               = i40e_close,
8573         .ndo_start_xmit         = i40e_lan_xmit_frame,
8574         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8575         .ndo_set_rx_mode        = i40e_set_rx_mode,
8576         .ndo_validate_addr      = eth_validate_addr,
8577         .ndo_set_mac_address    = i40e_set_mac,
8578         .ndo_change_mtu         = i40e_change_mtu,
8579         .ndo_do_ioctl           = i40e_ioctl,
8580         .ndo_tx_timeout         = i40e_tx_timeout,
8581         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8582         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8583 #ifdef CONFIG_NET_POLL_CONTROLLER
8584         .ndo_poll_controller    = i40e_netpoll,
8585 #endif
8586         .ndo_setup_tc           = i40e_setup_tc,
8587 #ifdef I40E_FCOE
8588         .ndo_fcoe_enable        = i40e_fcoe_enable,
8589         .ndo_fcoe_disable       = i40e_fcoe_disable,
8590 #endif
8591         .ndo_set_features       = i40e_set_features,
8592         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8593         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8594         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8595         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8596         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8597         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8598 #ifdef CONFIG_I40E_VXLAN
8599         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8600         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8601 #endif
8602         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8603         .ndo_fdb_add            = i40e_ndo_fdb_add,
8604         .ndo_features_check     = i40e_features_check,
8605         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8606         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8607 };
8608
8609 /**
8610  * i40e_config_netdev - Setup the netdev flags
8611  * @vsi: the VSI being configured
8612  *
8613  * Returns 0 on success, negative value on failure
8614  **/
8615 static int i40e_config_netdev(struct i40e_vsi *vsi)
8616 {
8617         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8618         struct i40e_pf *pf = vsi->back;
8619         struct i40e_hw *hw = &pf->hw;
8620         struct i40e_netdev_priv *np;
8621         struct net_device *netdev;
8622         u8 mac_addr[ETH_ALEN];
8623         int etherdev_size;
8624
8625         etherdev_size = sizeof(struct i40e_netdev_priv);
8626         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8627         if (!netdev)
8628                 return -ENOMEM;
8629
8630         vsi->netdev = netdev;
8631         np = netdev_priv(netdev);
8632         np->vsi = vsi;
8633
8634         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8635                                   NETIF_F_GSO_UDP_TUNNEL |
8636                                   NETIF_F_GSO_GRE        |
8637                                   NETIF_F_TSO;
8638
8639         netdev->features = NETIF_F_SG                  |
8640                            NETIF_F_IP_CSUM             |
8641                            NETIF_F_SCTP_CSUM           |
8642                            NETIF_F_HIGHDMA             |
8643                            NETIF_F_GSO_UDP_TUNNEL      |
8644                            NETIF_F_GSO_GRE             |
8645                            NETIF_F_HW_VLAN_CTAG_TX     |
8646                            NETIF_F_HW_VLAN_CTAG_RX     |
8647                            NETIF_F_HW_VLAN_CTAG_FILTER |
8648                            NETIF_F_IPV6_CSUM           |
8649                            NETIF_F_TSO                 |
8650                            NETIF_F_TSO_ECN             |
8651                            NETIF_F_TSO6                |
8652                            NETIF_F_RXCSUM              |
8653                            NETIF_F_RXHASH              |
8654                            0;
8655
8656         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8657                 netdev->features |= NETIF_F_NTUPLE;
8658
8659         /* copy netdev features into list of user selectable features */
8660         netdev->hw_features |= netdev->features;
8661
8662         if (vsi->type == I40E_VSI_MAIN) {
8663                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8664                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8665                 /* The following steps are necessary to prevent reception
8666                  * of tagged packets - some older NVM configurations load a
8667                  * default a MAC-VLAN filter that accepts any tagged packet
8668                  * which must be replaced by a normal filter.
8669                  */
8670                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8671                         spin_lock_bh(&vsi->mac_filter_list_lock);
8672                         i40e_add_filter(vsi, mac_addr,
8673                                         I40E_VLAN_ANY, false, true);
8674                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8675                 }
8676         } else {
8677                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8678                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8679                          pf->vsi[pf->lan_vsi]->netdev->name);
8680                 random_ether_addr(mac_addr);
8681
8682                 spin_lock_bh(&vsi->mac_filter_list_lock);
8683                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8684                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8685         }
8686
8687         spin_lock_bh(&vsi->mac_filter_list_lock);
8688         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8689         spin_unlock_bh(&vsi->mac_filter_list_lock);
8690
8691         ether_addr_copy(netdev->dev_addr, mac_addr);
8692         ether_addr_copy(netdev->perm_addr, mac_addr);
8693         /* vlan gets same features (except vlan offload)
8694          * after any tweaks for specific VSI types
8695          */
8696         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8697                                                      NETIF_F_HW_VLAN_CTAG_RX |
8698                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8699         netdev->priv_flags |= IFF_UNICAST_FLT;
8700         netdev->priv_flags |= IFF_SUPP_NOFCS;
8701         /* Setup netdev TC information */
8702         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8703
8704         netdev->netdev_ops = &i40e_netdev_ops;
8705         netdev->watchdog_timeo = 5 * HZ;
8706         i40e_set_ethtool_ops(netdev);
8707 #ifdef I40E_FCOE
8708         i40e_fcoe_config_netdev(netdev, vsi);
8709 #endif
8710
8711         return 0;
8712 }
8713
8714 /**
8715  * i40e_vsi_delete - Delete a VSI from the switch
8716  * @vsi: the VSI being removed
8717  *
8718  * Returns 0 on success, negative value on failure
8719  **/
8720 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8721 {
8722         /* remove default VSI is not allowed */
8723         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8724                 return;
8725
8726         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8727 }
8728
8729 /**
8730  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8731  * @vsi: the VSI being queried
8732  *
8733  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8734  **/
8735 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8736 {
8737         struct i40e_veb *veb;
8738         struct i40e_pf *pf = vsi->back;
8739
8740         /* Uplink is not a bridge so default to VEB */
8741         if (vsi->veb_idx == I40E_NO_VEB)
8742                 return 1;
8743
8744         veb = pf->veb[vsi->veb_idx];
8745         if (!veb) {
8746                 dev_info(&pf->pdev->dev,
8747                          "There is no veb associated with the bridge\n");
8748                 return -ENOENT;
8749         }
8750
8751         /* Uplink is a bridge in VEPA mode */
8752         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8753                 return 0;
8754         } else {
8755                 /* Uplink is a bridge in VEB mode */
8756                 return 1;
8757         }
8758
8759         /* VEPA is now default bridge, so return 0 */
8760         return 0;
8761 }
8762
8763 /**
8764  * i40e_add_vsi - Add a VSI to the switch
8765  * @vsi: the VSI being configured
8766  *
8767  * This initializes a VSI context depending on the VSI type to be added and
8768  * passes it down to the add_vsi aq command.
8769  **/
8770 static int i40e_add_vsi(struct i40e_vsi *vsi)
8771 {
8772         int ret = -ENODEV;
8773         u8 laa_macaddr[ETH_ALEN];
8774         bool found_laa_mac_filter = false;
8775         struct i40e_pf *pf = vsi->back;
8776         struct i40e_hw *hw = &pf->hw;
8777         struct i40e_vsi_context ctxt;
8778         struct i40e_mac_filter *f, *ftmp;
8779
8780         u8 enabled_tc = 0x1; /* TC0 enabled */
8781         int f_count = 0;
8782
8783         memset(&ctxt, 0, sizeof(ctxt));
8784         switch (vsi->type) {
8785         case I40E_VSI_MAIN:
8786                 /* The PF's main VSI is already setup as part of the
8787                  * device initialization, so we'll not bother with
8788                  * the add_vsi call, but we will retrieve the current
8789                  * VSI context.
8790                  */
8791                 ctxt.seid = pf->main_vsi_seid;
8792                 ctxt.pf_num = pf->hw.pf_id;
8793                 ctxt.vf_num = 0;
8794                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8795                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8796                 if (ret) {
8797                         dev_info(&pf->pdev->dev,
8798                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8799                                  i40e_stat_str(&pf->hw, ret),
8800                                  i40e_aq_str(&pf->hw,
8801                                              pf->hw.aq.asq_last_status));
8802                         return -ENOENT;
8803                 }
8804                 vsi->info = ctxt.info;
8805                 vsi->info.valid_sections = 0;
8806
8807                 vsi->seid = ctxt.seid;
8808                 vsi->id = ctxt.vsi_number;
8809
8810                 enabled_tc = i40e_pf_get_tc_map(pf);
8811
8812                 /* MFP mode setup queue map and update VSI */
8813                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8814                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8815                         memset(&ctxt, 0, sizeof(ctxt));
8816                         ctxt.seid = pf->main_vsi_seid;
8817                         ctxt.pf_num = pf->hw.pf_id;
8818                         ctxt.vf_num = 0;
8819                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8820                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8821                         if (ret) {
8822                                 dev_info(&pf->pdev->dev,
8823                                          "update vsi failed, err %s aq_err %s\n",
8824                                          i40e_stat_str(&pf->hw, ret),
8825                                          i40e_aq_str(&pf->hw,
8826                                                     pf->hw.aq.asq_last_status));
8827                                 ret = -ENOENT;
8828                                 goto err;
8829                         }
8830                         /* update the local VSI info queue map */
8831                         i40e_vsi_update_queue_map(vsi, &ctxt);
8832                         vsi->info.valid_sections = 0;
8833                 } else {
8834                         /* Default/Main VSI is only enabled for TC0
8835                          * reconfigure it to enable all TCs that are
8836                          * available on the port in SFP mode.
8837                          * For MFP case the iSCSI PF would use this
8838                          * flow to enable LAN+iSCSI TC.
8839                          */
8840                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8841                         if (ret) {
8842                                 dev_info(&pf->pdev->dev,
8843                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8844                                          enabled_tc,
8845                                          i40e_stat_str(&pf->hw, ret),
8846                                          i40e_aq_str(&pf->hw,
8847                                                     pf->hw.aq.asq_last_status));
8848                                 ret = -ENOENT;
8849                         }
8850                 }
8851                 break;
8852
8853         case I40E_VSI_FDIR:
8854                 ctxt.pf_num = hw->pf_id;
8855                 ctxt.vf_num = 0;
8856                 ctxt.uplink_seid = vsi->uplink_seid;
8857                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8858                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8859                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8860                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8861                         ctxt.info.valid_sections |=
8862                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8863                         ctxt.info.switch_id =
8864                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8865                 }
8866                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8867                 break;
8868
8869         case I40E_VSI_VMDQ2:
8870                 ctxt.pf_num = hw->pf_id;
8871                 ctxt.vf_num = 0;
8872                 ctxt.uplink_seid = vsi->uplink_seid;
8873                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8874                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8875
8876                 /* This VSI is connected to VEB so the switch_id
8877                  * should be set to zero by default.
8878                  */
8879                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8880                         ctxt.info.valid_sections |=
8881                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8882                         ctxt.info.switch_id =
8883                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8884                 }
8885
8886                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8887                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8888                 break;
8889
8890         case I40E_VSI_SRIOV:
8891                 ctxt.pf_num = hw->pf_id;
8892                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8893                 ctxt.uplink_seid = vsi->uplink_seid;
8894                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8895                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8896
8897                 /* This VSI is connected to VEB so the switch_id
8898                  * should be set to zero by default.
8899                  */
8900                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8901                         ctxt.info.valid_sections |=
8902                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8903                         ctxt.info.switch_id =
8904                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8905                 }
8906
8907                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8908                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8909                 if (pf->vf[vsi->vf_id].spoofchk) {
8910                         ctxt.info.valid_sections |=
8911                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8912                         ctxt.info.sec_flags |=
8913                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8914                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8915                 }
8916                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8917                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8918                 break;
8919
8920 #ifdef I40E_FCOE
8921         case I40E_VSI_FCOE:
8922                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8923                 if (ret) {
8924                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8925                         return ret;
8926                 }
8927                 break;
8928
8929 #endif /* I40E_FCOE */
8930         default:
8931                 return -ENODEV;
8932         }
8933
8934         if (vsi->type != I40E_VSI_MAIN) {
8935                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8936                 if (ret) {
8937                         dev_info(&vsi->back->pdev->dev,
8938                                  "add vsi failed, err %s aq_err %s\n",
8939                                  i40e_stat_str(&pf->hw, ret),
8940                                  i40e_aq_str(&pf->hw,
8941                                              pf->hw.aq.asq_last_status));
8942                         ret = -ENOENT;
8943                         goto err;
8944                 }
8945                 vsi->info = ctxt.info;
8946                 vsi->info.valid_sections = 0;
8947                 vsi->seid = ctxt.seid;
8948                 vsi->id = ctxt.vsi_number;
8949         }
8950
8951         spin_lock_bh(&vsi->mac_filter_list_lock);
8952         /* If macvlan filters already exist, force them to get loaded */
8953         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8954                 f->changed = true;
8955                 f_count++;
8956
8957                 /* Expected to have only one MAC filter entry for LAA in list */
8958                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8959                         ether_addr_copy(laa_macaddr, f->macaddr);
8960                         found_laa_mac_filter = true;
8961                 }
8962         }
8963         spin_unlock_bh(&vsi->mac_filter_list_lock);
8964
8965         if (found_laa_mac_filter) {
8966                 struct i40e_aqc_remove_macvlan_element_data element;
8967
8968                 memset(&element, 0, sizeof(element));
8969                 ether_addr_copy(element.mac_addr, laa_macaddr);
8970                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8971                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8972                                              &element, 1, NULL);
8973                 if (ret) {
8974                         /* some older FW has a different default */
8975                         element.flags |=
8976                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8977                         i40e_aq_remove_macvlan(hw, vsi->seid,
8978                                                &element, 1, NULL);
8979                 }
8980
8981                 i40e_aq_mac_address_write(hw,
8982                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
8983                                           laa_macaddr, NULL);
8984         }
8985
8986         if (f_count) {
8987                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8988                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8989         }
8990
8991         /* Update VSI BW information */
8992         ret = i40e_vsi_get_bw_info(vsi);
8993         if (ret) {
8994                 dev_info(&pf->pdev->dev,
8995                          "couldn't get vsi bw info, err %s aq_err %s\n",
8996                          i40e_stat_str(&pf->hw, ret),
8997                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8998                 /* VSI is already added so not tearing that up */
8999                 ret = 0;
9000         }
9001
9002 err:
9003         return ret;
9004 }
9005
9006 /**
9007  * i40e_vsi_release - Delete a VSI and free its resources
9008  * @vsi: the VSI being removed
9009  *
9010  * Returns 0 on success or < 0 on error
9011  **/
9012 int i40e_vsi_release(struct i40e_vsi *vsi)
9013 {
9014         struct i40e_mac_filter *f, *ftmp;
9015         struct i40e_veb *veb = NULL;
9016         struct i40e_pf *pf;
9017         u16 uplink_seid;
9018         int i, n;
9019
9020         pf = vsi->back;
9021
9022         /* release of a VEB-owner or last VSI is not allowed */
9023         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9024                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9025                          vsi->seid, vsi->uplink_seid);
9026                 return -ENODEV;
9027         }
9028         if (vsi == pf->vsi[pf->lan_vsi] &&
9029             !test_bit(__I40E_DOWN, &pf->state)) {
9030                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9031                 return -ENODEV;
9032         }
9033
9034         uplink_seid = vsi->uplink_seid;
9035         if (vsi->type != I40E_VSI_SRIOV) {
9036                 if (vsi->netdev_registered) {
9037                         vsi->netdev_registered = false;
9038                         if (vsi->netdev) {
9039                                 /* results in a call to i40e_close() */
9040                                 unregister_netdev(vsi->netdev);
9041                         }
9042                 } else {
9043                         i40e_vsi_close(vsi);
9044                 }
9045                 i40e_vsi_disable_irq(vsi);
9046         }
9047
9048         spin_lock_bh(&vsi->mac_filter_list_lock);
9049         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9050                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9051                                 f->is_vf, f->is_netdev);
9052         spin_unlock_bh(&vsi->mac_filter_list_lock);
9053
9054         i40e_sync_vsi_filters(vsi, false);
9055
9056         i40e_vsi_delete(vsi);
9057         i40e_vsi_free_q_vectors(vsi);
9058         if (vsi->netdev) {
9059                 free_netdev(vsi->netdev);
9060                 vsi->netdev = NULL;
9061         }
9062         i40e_vsi_clear_rings(vsi);
9063         i40e_vsi_clear(vsi);
9064
9065         /* If this was the last thing on the VEB, except for the
9066          * controlling VSI, remove the VEB, which puts the controlling
9067          * VSI onto the next level down in the switch.
9068          *
9069          * Well, okay, there's one more exception here: don't remove
9070          * the orphan VEBs yet.  We'll wait for an explicit remove request
9071          * from up the network stack.
9072          */
9073         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9074                 if (pf->vsi[i] &&
9075                     pf->vsi[i]->uplink_seid == uplink_seid &&
9076                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9077                         n++;      /* count the VSIs */
9078                 }
9079         }
9080         for (i = 0; i < I40E_MAX_VEB; i++) {
9081                 if (!pf->veb[i])
9082                         continue;
9083                 if (pf->veb[i]->uplink_seid == uplink_seid)
9084                         n++;     /* count the VEBs */
9085                 if (pf->veb[i]->seid == uplink_seid)
9086                         veb = pf->veb[i];
9087         }
9088         if (n == 0 && veb && veb->uplink_seid != 0)
9089                 i40e_veb_release(veb);
9090
9091         return 0;
9092 }
9093
9094 /**
9095  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9096  * @vsi: ptr to the VSI
9097  *
9098  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9099  * corresponding SW VSI structure and initializes num_queue_pairs for the
9100  * newly allocated VSI.
9101  *
9102  * Returns 0 on success or negative on failure
9103  **/
9104 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9105 {
9106         int ret = -ENOENT;
9107         struct i40e_pf *pf = vsi->back;
9108
9109         if (vsi->q_vectors[0]) {
9110                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9111                          vsi->seid);
9112                 return -EEXIST;
9113         }
9114
9115         if (vsi->base_vector) {
9116                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9117                          vsi->seid, vsi->base_vector);
9118                 return -EEXIST;
9119         }
9120
9121         ret = i40e_vsi_alloc_q_vectors(vsi);
9122         if (ret) {
9123                 dev_info(&pf->pdev->dev,
9124                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9125                          vsi->num_q_vectors, vsi->seid, ret);
9126                 vsi->num_q_vectors = 0;
9127                 goto vector_setup_out;
9128         }
9129
9130         /* In Legacy mode, we do not have to get any other vector since we
9131          * piggyback on the misc/ICR0 for queue interrupts.
9132         */
9133         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9134                 return ret;
9135         if (vsi->num_q_vectors)
9136                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9137                                                  vsi->num_q_vectors, vsi->idx);
9138         if (vsi->base_vector < 0) {
9139                 dev_info(&pf->pdev->dev,
9140                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9141                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9142                 i40e_vsi_free_q_vectors(vsi);
9143                 ret = -ENOENT;
9144                 goto vector_setup_out;
9145         }
9146
9147 vector_setup_out:
9148         return ret;
9149 }
9150
9151 /**
9152  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9153  * @vsi: pointer to the vsi.
9154  *
9155  * This re-allocates a vsi's queue resources.
9156  *
9157  * Returns pointer to the successfully allocated and configured VSI sw struct
9158  * on success, otherwise returns NULL on failure.
9159  **/
9160 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9161 {
9162         struct i40e_pf *pf = vsi->back;
9163         u8 enabled_tc;
9164         int ret;
9165
9166         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9167         i40e_vsi_clear_rings(vsi);
9168
9169         i40e_vsi_free_arrays(vsi, false);
9170         i40e_set_num_rings_in_vsi(vsi);
9171         ret = i40e_vsi_alloc_arrays(vsi, false);
9172         if (ret)
9173                 goto err_vsi;
9174
9175         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9176         if (ret < 0) {
9177                 dev_info(&pf->pdev->dev,
9178                          "failed to get tracking for %d queues for VSI %d err %d\n",
9179                          vsi->alloc_queue_pairs, vsi->seid, ret);
9180                 goto err_vsi;
9181         }
9182         vsi->base_queue = ret;
9183
9184         /* Update the FW view of the VSI. Force a reset of TC and queue
9185          * layout configurations.
9186          */
9187         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9188         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9189         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9190         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9191
9192         /* assign it some queues */
9193         ret = i40e_alloc_rings(vsi);
9194         if (ret)
9195                 goto err_rings;
9196
9197         /* map all of the rings to the q_vectors */
9198         i40e_vsi_map_rings_to_vectors(vsi);
9199         return vsi;
9200
9201 err_rings:
9202         i40e_vsi_free_q_vectors(vsi);
9203         if (vsi->netdev_registered) {
9204                 vsi->netdev_registered = false;
9205                 unregister_netdev(vsi->netdev);
9206                 free_netdev(vsi->netdev);
9207                 vsi->netdev = NULL;
9208         }
9209         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9210 err_vsi:
9211         i40e_vsi_clear(vsi);
9212         return NULL;
9213 }
9214
9215 /**
9216  * i40e_vsi_setup - Set up a VSI by a given type
9217  * @pf: board private structure
9218  * @type: VSI type
9219  * @uplink_seid: the switch element to link to
9220  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9221  *
9222  * This allocates the sw VSI structure and its queue resources, then add a VSI
9223  * to the identified VEB.
9224  *
9225  * Returns pointer to the successfully allocated and configure VSI sw struct on
9226  * success, otherwise returns NULL on failure.
9227  **/
9228 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9229                                 u16 uplink_seid, u32 param1)
9230 {
9231         struct i40e_vsi *vsi = NULL;
9232         struct i40e_veb *veb = NULL;
9233         int ret, i;
9234         int v_idx;
9235
9236         /* The requested uplink_seid must be either
9237          *     - the PF's port seid
9238          *              no VEB is needed because this is the PF
9239          *              or this is a Flow Director special case VSI
9240          *     - seid of an existing VEB
9241          *     - seid of a VSI that owns an existing VEB
9242          *     - seid of a VSI that doesn't own a VEB
9243          *              a new VEB is created and the VSI becomes the owner
9244          *     - seid of the PF VSI, which is what creates the first VEB
9245          *              this is a special case of the previous
9246          *
9247          * Find which uplink_seid we were given and create a new VEB if needed
9248          */
9249         for (i = 0; i < I40E_MAX_VEB; i++) {
9250                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9251                         veb = pf->veb[i];
9252                         break;
9253                 }
9254         }
9255
9256         if (!veb && uplink_seid != pf->mac_seid) {
9257
9258                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9259                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9260                                 vsi = pf->vsi[i];
9261                                 break;
9262                         }
9263                 }
9264                 if (!vsi) {
9265                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9266                                  uplink_seid);
9267                         return NULL;
9268                 }
9269
9270                 if (vsi->uplink_seid == pf->mac_seid)
9271                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9272                                              vsi->tc_config.enabled_tc);
9273                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9274                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9275                                              vsi->tc_config.enabled_tc);
9276                 if (veb) {
9277                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9278                                 dev_info(&vsi->back->pdev->dev,
9279                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9280                                 return NULL;
9281                         }
9282                         /* We come up by default in VEPA mode if SRIOV is not
9283                          * already enabled, in which case we can't force VEPA
9284                          * mode.
9285                          */
9286                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9287                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9288                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9289                         }
9290                         i40e_config_bridge_mode(veb);
9291                 }
9292                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9293                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9294                                 veb = pf->veb[i];
9295                 }
9296                 if (!veb) {
9297                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9298                         return NULL;
9299                 }
9300
9301                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9302                 uplink_seid = veb->seid;
9303         }
9304
9305         /* get vsi sw struct */
9306         v_idx = i40e_vsi_mem_alloc(pf, type);
9307         if (v_idx < 0)
9308                 goto err_alloc;
9309         vsi = pf->vsi[v_idx];
9310         if (!vsi)
9311                 goto err_alloc;
9312         vsi->type = type;
9313         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9314
9315         if (type == I40E_VSI_MAIN)
9316                 pf->lan_vsi = v_idx;
9317         else if (type == I40E_VSI_SRIOV)
9318                 vsi->vf_id = param1;
9319         /* assign it some queues */
9320         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9321                                 vsi->idx);
9322         if (ret < 0) {
9323                 dev_info(&pf->pdev->dev,
9324                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9325                          vsi->alloc_queue_pairs, vsi->seid, ret);
9326                 goto err_vsi;
9327         }
9328         vsi->base_queue = ret;
9329
9330         /* get a VSI from the hardware */
9331         vsi->uplink_seid = uplink_seid;
9332         ret = i40e_add_vsi(vsi);
9333         if (ret)
9334                 goto err_vsi;
9335
9336         switch (vsi->type) {
9337         /* setup the netdev if needed */
9338         case I40E_VSI_MAIN:
9339         case I40E_VSI_VMDQ2:
9340         case I40E_VSI_FCOE:
9341                 ret = i40e_config_netdev(vsi);
9342                 if (ret)
9343                         goto err_netdev;
9344                 ret = register_netdev(vsi->netdev);
9345                 if (ret)
9346                         goto err_netdev;
9347                 vsi->netdev_registered = true;
9348                 netif_carrier_off(vsi->netdev);
9349 #ifdef CONFIG_I40E_DCB
9350                 /* Setup DCB netlink interface */
9351                 i40e_dcbnl_setup(vsi);
9352 #endif /* CONFIG_I40E_DCB */
9353                 /* fall through */
9354
9355         case I40E_VSI_FDIR:
9356                 /* set up vectors and rings if needed */
9357                 ret = i40e_vsi_setup_vectors(vsi);
9358                 if (ret)
9359                         goto err_msix;
9360
9361                 ret = i40e_alloc_rings(vsi);
9362                 if (ret)
9363                         goto err_rings;
9364
9365                 /* map all of the rings to the q_vectors */
9366                 i40e_vsi_map_rings_to_vectors(vsi);
9367
9368                 i40e_vsi_reset_stats(vsi);
9369                 break;
9370
9371         default:
9372                 /* no netdev or rings for the other VSI types */
9373                 break;
9374         }
9375
9376         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9377             (vsi->type == I40E_VSI_VMDQ2)) {
9378                 ret = i40e_vsi_config_rss(vsi);
9379         }
9380         return vsi;
9381
9382 err_rings:
9383         i40e_vsi_free_q_vectors(vsi);
9384 err_msix:
9385         if (vsi->netdev_registered) {
9386                 vsi->netdev_registered = false;
9387                 unregister_netdev(vsi->netdev);
9388                 free_netdev(vsi->netdev);
9389                 vsi->netdev = NULL;
9390         }
9391 err_netdev:
9392         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9393 err_vsi:
9394         i40e_vsi_clear(vsi);
9395 err_alloc:
9396         return NULL;
9397 }
9398
9399 /**
9400  * i40e_veb_get_bw_info - Query VEB BW information
9401  * @veb: the veb to query
9402  *
9403  * Query the Tx scheduler BW configuration data for given VEB
9404  **/
9405 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9406 {
9407         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9408         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9409         struct i40e_pf *pf = veb->pf;
9410         struct i40e_hw *hw = &pf->hw;
9411         u32 tc_bw_max;
9412         int ret = 0;
9413         int i;
9414
9415         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9416                                                   &bw_data, NULL);
9417         if (ret) {
9418                 dev_info(&pf->pdev->dev,
9419                          "query veb bw config failed, err %s aq_err %s\n",
9420                          i40e_stat_str(&pf->hw, ret),
9421                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9422                 goto out;
9423         }
9424
9425         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9426                                                    &ets_data, NULL);
9427         if (ret) {
9428                 dev_info(&pf->pdev->dev,
9429                          "query veb bw ets config failed, err %s aq_err %s\n",
9430                          i40e_stat_str(&pf->hw, ret),
9431                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9432                 goto out;
9433         }
9434
9435         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9436         veb->bw_max_quanta = ets_data.tc_bw_max;
9437         veb->is_abs_credits = bw_data.absolute_credits_enable;
9438         veb->enabled_tc = ets_data.tc_valid_bits;
9439         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9440                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9441         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9442                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9443                 veb->bw_tc_limit_credits[i] =
9444                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9445                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9446         }
9447
9448 out:
9449         return ret;
9450 }
9451
9452 /**
9453  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9454  * @pf: board private structure
9455  *
9456  * On error: returns error code (negative)
9457  * On success: returns vsi index in PF (positive)
9458  **/
9459 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9460 {
9461         int ret = -ENOENT;
9462         struct i40e_veb *veb;
9463         int i;
9464
9465         /* Need to protect the allocation of switch elements at the PF level */
9466         mutex_lock(&pf->switch_mutex);
9467
9468         /* VEB list may be fragmented if VEB creation/destruction has
9469          * been happening.  We can afford to do a quick scan to look
9470          * for any free slots in the list.
9471          *
9472          * find next empty veb slot, looping back around if necessary
9473          */
9474         i = 0;
9475         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9476                 i++;
9477         if (i >= I40E_MAX_VEB) {
9478                 ret = -ENOMEM;
9479                 goto err_alloc_veb;  /* out of VEB slots! */
9480         }
9481
9482         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9483         if (!veb) {
9484                 ret = -ENOMEM;
9485                 goto err_alloc_veb;
9486         }
9487         veb->pf = pf;
9488         veb->idx = i;
9489         veb->enabled_tc = 1;
9490
9491         pf->veb[i] = veb;
9492         ret = i;
9493 err_alloc_veb:
9494         mutex_unlock(&pf->switch_mutex);
9495         return ret;
9496 }
9497
9498 /**
9499  * i40e_switch_branch_release - Delete a branch of the switch tree
9500  * @branch: where to start deleting
9501  *
9502  * This uses recursion to find the tips of the branch to be
9503  * removed, deleting until we get back to and can delete this VEB.
9504  **/
9505 static void i40e_switch_branch_release(struct i40e_veb *branch)
9506 {
9507         struct i40e_pf *pf = branch->pf;
9508         u16 branch_seid = branch->seid;
9509         u16 veb_idx = branch->idx;
9510         int i;
9511
9512         /* release any VEBs on this VEB - RECURSION */
9513         for (i = 0; i < I40E_MAX_VEB; i++) {
9514                 if (!pf->veb[i])
9515                         continue;
9516                 if (pf->veb[i]->uplink_seid == branch->seid)
9517                         i40e_switch_branch_release(pf->veb[i]);
9518         }
9519
9520         /* Release the VSIs on this VEB, but not the owner VSI.
9521          *
9522          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9523          *       the VEB itself, so don't use (*branch) after this loop.
9524          */
9525         for (i = 0; i < pf->num_alloc_vsi; i++) {
9526                 if (!pf->vsi[i])
9527                         continue;
9528                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9529                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9530                         i40e_vsi_release(pf->vsi[i]);
9531                 }
9532         }
9533
9534         /* There's one corner case where the VEB might not have been
9535          * removed, so double check it here and remove it if needed.
9536          * This case happens if the veb was created from the debugfs
9537          * commands and no VSIs were added to it.
9538          */
9539         if (pf->veb[veb_idx])
9540                 i40e_veb_release(pf->veb[veb_idx]);
9541 }
9542
9543 /**
9544  * i40e_veb_clear - remove veb struct
9545  * @veb: the veb to remove
9546  **/
9547 static void i40e_veb_clear(struct i40e_veb *veb)
9548 {
9549         if (!veb)
9550                 return;
9551
9552         if (veb->pf) {
9553                 struct i40e_pf *pf = veb->pf;
9554
9555                 mutex_lock(&pf->switch_mutex);
9556                 if (pf->veb[veb->idx] == veb)
9557                         pf->veb[veb->idx] = NULL;
9558                 mutex_unlock(&pf->switch_mutex);
9559         }
9560
9561         kfree(veb);
9562 }
9563
9564 /**
9565  * i40e_veb_release - Delete a VEB and free its resources
9566  * @veb: the VEB being removed
9567  **/
9568 void i40e_veb_release(struct i40e_veb *veb)
9569 {
9570         struct i40e_vsi *vsi = NULL;
9571         struct i40e_pf *pf;
9572         int i, n = 0;
9573
9574         pf = veb->pf;
9575
9576         /* find the remaining VSI and check for extras */
9577         for (i = 0; i < pf->num_alloc_vsi; i++) {
9578                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9579                         n++;
9580                         vsi = pf->vsi[i];
9581                 }
9582         }
9583         if (n != 1) {
9584                 dev_info(&pf->pdev->dev,
9585                          "can't remove VEB %d with %d VSIs left\n",
9586                          veb->seid, n);
9587                 return;
9588         }
9589
9590         /* move the remaining VSI to uplink veb */
9591         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9592         if (veb->uplink_seid) {
9593                 vsi->uplink_seid = veb->uplink_seid;
9594                 if (veb->uplink_seid == pf->mac_seid)
9595                         vsi->veb_idx = I40E_NO_VEB;
9596                 else
9597                         vsi->veb_idx = veb->veb_idx;
9598         } else {
9599                 /* floating VEB */
9600                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9601                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9602         }
9603
9604         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9605         i40e_veb_clear(veb);
9606 }
9607
9608 /**
9609  * i40e_add_veb - create the VEB in the switch
9610  * @veb: the VEB to be instantiated
9611  * @vsi: the controlling VSI
9612  **/
9613 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9614 {
9615         struct i40e_pf *pf = veb->pf;
9616         bool is_default = veb->pf->cur_promisc;
9617         bool is_cloud = false;
9618         int ret;
9619
9620         /* get a VEB from the hardware */
9621         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9622                               veb->enabled_tc, is_default,
9623                               is_cloud, &veb->seid, NULL);
9624         if (ret) {
9625                 dev_info(&pf->pdev->dev,
9626                          "couldn't add VEB, err %s aq_err %s\n",
9627                          i40e_stat_str(&pf->hw, ret),
9628                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9629                 return -EPERM;
9630         }
9631
9632         /* get statistics counter */
9633         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9634                                          &veb->stats_idx, NULL, NULL, NULL);
9635         if (ret) {
9636                 dev_info(&pf->pdev->dev,
9637                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9638                          i40e_stat_str(&pf->hw, ret),
9639                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9640                 return -EPERM;
9641         }
9642         ret = i40e_veb_get_bw_info(veb);
9643         if (ret) {
9644                 dev_info(&pf->pdev->dev,
9645                          "couldn't get VEB bw info, err %s aq_err %s\n",
9646                          i40e_stat_str(&pf->hw, ret),
9647                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9648                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9649                 return -ENOENT;
9650         }
9651
9652         vsi->uplink_seid = veb->seid;
9653         vsi->veb_idx = veb->idx;
9654         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9655
9656         return 0;
9657 }
9658
9659 /**
9660  * i40e_veb_setup - Set up a VEB
9661  * @pf: board private structure
9662  * @flags: VEB setup flags
9663  * @uplink_seid: the switch element to link to
9664  * @vsi_seid: the initial VSI seid
9665  * @enabled_tc: Enabled TC bit-map
9666  *
9667  * This allocates the sw VEB structure and links it into the switch
9668  * It is possible and legal for this to be a duplicate of an already
9669  * existing VEB.  It is also possible for both uplink and vsi seids
9670  * to be zero, in order to create a floating VEB.
9671  *
9672  * Returns pointer to the successfully allocated VEB sw struct on
9673  * success, otherwise returns NULL on failure.
9674  **/
9675 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9676                                 u16 uplink_seid, u16 vsi_seid,
9677                                 u8 enabled_tc)
9678 {
9679         struct i40e_veb *veb, *uplink_veb = NULL;
9680         int vsi_idx, veb_idx;
9681         int ret;
9682
9683         /* if one seid is 0, the other must be 0 to create a floating relay */
9684         if ((uplink_seid == 0 || vsi_seid == 0) &&
9685             (uplink_seid + vsi_seid != 0)) {
9686                 dev_info(&pf->pdev->dev,
9687                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9688                          uplink_seid, vsi_seid);
9689                 return NULL;
9690         }
9691
9692         /* make sure there is such a vsi and uplink */
9693         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9694                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9695                         break;
9696         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9697                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9698                          vsi_seid);
9699                 return NULL;
9700         }
9701
9702         if (uplink_seid && uplink_seid != pf->mac_seid) {
9703                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9704                         if (pf->veb[veb_idx] &&
9705                             pf->veb[veb_idx]->seid == uplink_seid) {
9706                                 uplink_veb = pf->veb[veb_idx];
9707                                 break;
9708                         }
9709                 }
9710                 if (!uplink_veb) {
9711                         dev_info(&pf->pdev->dev,
9712                                  "uplink seid %d not found\n", uplink_seid);
9713                         return NULL;
9714                 }
9715         }
9716
9717         /* get veb sw struct */
9718         veb_idx = i40e_veb_mem_alloc(pf);
9719         if (veb_idx < 0)
9720                 goto err_alloc;
9721         veb = pf->veb[veb_idx];
9722         veb->flags = flags;
9723         veb->uplink_seid = uplink_seid;
9724         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9725         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9726
9727         /* create the VEB in the switch */
9728         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9729         if (ret)
9730                 goto err_veb;
9731         if (vsi_idx == pf->lan_vsi)
9732                 pf->lan_veb = veb->idx;
9733
9734         return veb;
9735
9736 err_veb:
9737         i40e_veb_clear(veb);
9738 err_alloc:
9739         return NULL;
9740 }
9741
9742 /**
9743  * i40e_setup_pf_switch_element - set PF vars based on switch type
9744  * @pf: board private structure
9745  * @ele: element we are building info from
9746  * @num_reported: total number of elements
9747  * @printconfig: should we print the contents
9748  *
9749  * helper function to assist in extracting a few useful SEID values.
9750  **/
9751 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9752                                 struct i40e_aqc_switch_config_element_resp *ele,
9753                                 u16 num_reported, bool printconfig)
9754 {
9755         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9756         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9757         u8 element_type = ele->element_type;
9758         u16 seid = le16_to_cpu(ele->seid);
9759
9760         if (printconfig)
9761                 dev_info(&pf->pdev->dev,
9762                          "type=%d seid=%d uplink=%d downlink=%d\n",
9763                          element_type, seid, uplink_seid, downlink_seid);
9764
9765         switch (element_type) {
9766         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9767                 pf->mac_seid = seid;
9768                 break;
9769         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9770                 /* Main VEB? */
9771                 if (uplink_seid != pf->mac_seid)
9772                         break;
9773                 if (pf->lan_veb == I40E_NO_VEB) {
9774                         int v;
9775
9776                         /* find existing or else empty VEB */
9777                         for (v = 0; v < I40E_MAX_VEB; v++) {
9778                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9779                                         pf->lan_veb = v;
9780                                         break;
9781                                 }
9782                         }
9783                         if (pf->lan_veb == I40E_NO_VEB) {
9784                                 v = i40e_veb_mem_alloc(pf);
9785                                 if (v < 0)
9786                                         break;
9787                                 pf->lan_veb = v;
9788                         }
9789                 }
9790
9791                 pf->veb[pf->lan_veb]->seid = seid;
9792                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9793                 pf->veb[pf->lan_veb]->pf = pf;
9794                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9795                 break;
9796         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9797                 if (num_reported != 1)
9798                         break;
9799                 /* This is immediately after a reset so we can assume this is
9800                  * the PF's VSI
9801                  */
9802                 pf->mac_seid = uplink_seid;
9803                 pf->pf_seid = downlink_seid;
9804                 pf->main_vsi_seid = seid;
9805                 if (printconfig)
9806                         dev_info(&pf->pdev->dev,
9807                                  "pf_seid=%d main_vsi_seid=%d\n",
9808                                  pf->pf_seid, pf->main_vsi_seid);
9809                 break;
9810         case I40E_SWITCH_ELEMENT_TYPE_PF:
9811         case I40E_SWITCH_ELEMENT_TYPE_VF:
9812         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9813         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9814         case I40E_SWITCH_ELEMENT_TYPE_PE:
9815         case I40E_SWITCH_ELEMENT_TYPE_PA:
9816                 /* ignore these for now */
9817                 break;
9818         default:
9819                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9820                          element_type, seid);
9821                 break;
9822         }
9823 }
9824
9825 /**
9826  * i40e_fetch_switch_configuration - Get switch config from firmware
9827  * @pf: board private structure
9828  * @printconfig: should we print the contents
9829  *
9830  * Get the current switch configuration from the device and
9831  * extract a few useful SEID values.
9832  **/
9833 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9834 {
9835         struct i40e_aqc_get_switch_config_resp *sw_config;
9836         u16 next_seid = 0;
9837         int ret = 0;
9838         u8 *aq_buf;
9839         int i;
9840
9841         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9842         if (!aq_buf)
9843                 return -ENOMEM;
9844
9845         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9846         do {
9847                 u16 num_reported, num_total;
9848
9849                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9850                                                 I40E_AQ_LARGE_BUF,
9851                                                 &next_seid, NULL);
9852                 if (ret) {
9853                         dev_info(&pf->pdev->dev,
9854                                  "get switch config failed err %s aq_err %s\n",
9855                                  i40e_stat_str(&pf->hw, ret),
9856                                  i40e_aq_str(&pf->hw,
9857                                              pf->hw.aq.asq_last_status));
9858                         kfree(aq_buf);
9859                         return -ENOENT;
9860                 }
9861
9862                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9863                 num_total = le16_to_cpu(sw_config->header.num_total);
9864
9865                 if (printconfig)
9866                         dev_info(&pf->pdev->dev,
9867                                  "header: %d reported %d total\n",
9868                                  num_reported, num_total);
9869
9870                 for (i = 0; i < num_reported; i++) {
9871                         struct i40e_aqc_switch_config_element_resp *ele =
9872                                 &sw_config->element[i];
9873
9874                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9875                                                      printconfig);
9876                 }
9877         } while (next_seid != 0);
9878
9879         kfree(aq_buf);
9880         return ret;
9881 }
9882
9883 /**
9884  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9885  * @pf: board private structure
9886  * @reinit: if the Main VSI needs to re-initialized.
9887  *
9888  * Returns 0 on success, negative value on failure
9889  **/
9890 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9891 {
9892         int ret;
9893
9894         /* find out what's out there already */
9895         ret = i40e_fetch_switch_configuration(pf, false);
9896         if (ret) {
9897                 dev_info(&pf->pdev->dev,
9898                          "couldn't fetch switch config, err %s aq_err %s\n",
9899                          i40e_stat_str(&pf->hw, ret),
9900                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9901                 return ret;
9902         }
9903         i40e_pf_reset_stats(pf);
9904
9905         /* first time setup */
9906         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9907                 struct i40e_vsi *vsi = NULL;
9908                 u16 uplink_seid;
9909
9910                 /* Set up the PF VSI associated with the PF's main VSI
9911                  * that is already in the HW switch
9912                  */
9913                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9914                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9915                 else
9916                         uplink_seid = pf->mac_seid;
9917                 if (pf->lan_vsi == I40E_NO_VSI)
9918                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9919                 else if (reinit)
9920                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9921                 if (!vsi) {
9922                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9923                         i40e_fdir_teardown(pf);
9924                         return -EAGAIN;
9925                 }
9926         } else {
9927                 /* force a reset of TC and queue layout configurations */
9928                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9929
9930                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9931                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9932                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9933         }
9934         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9935
9936         i40e_fdir_sb_setup(pf);
9937
9938         /* Setup static PF queue filter control settings */
9939         ret = i40e_setup_pf_filter_control(pf);
9940         if (ret) {
9941                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9942                          ret);
9943                 /* Failure here should not stop continuing other steps */
9944         }
9945
9946         /* enable RSS in the HW, even for only one queue, as the stack can use
9947          * the hash
9948          */
9949         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9950                 i40e_config_rss(pf);
9951
9952         /* fill in link information and enable LSE reporting */
9953         i40e_update_link_info(&pf->hw);
9954         i40e_link_event(pf);
9955
9956         /* Initialize user-specific link properties */
9957         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9958                                   I40E_AQ_AN_COMPLETED) ? true : false);
9959
9960         i40e_ptp_init(pf);
9961
9962         return ret;
9963 }
9964
9965 /**
9966  * i40e_determine_queue_usage - Work out queue distribution
9967  * @pf: board private structure
9968  **/
9969 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9970 {
9971         int queues_left;
9972
9973         pf->num_lan_qps = 0;
9974 #ifdef I40E_FCOE
9975         pf->num_fcoe_qps = 0;
9976 #endif
9977
9978         /* Find the max queues to be put into basic use.  We'll always be
9979          * using TC0, whether or not DCB is running, and TC0 will get the
9980          * big RSS set.
9981          */
9982         queues_left = pf->hw.func_caps.num_tx_qp;
9983
9984         if ((queues_left == 1) ||
9985             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9986                 /* one qp for PF, no queues for anything else */
9987                 queues_left = 0;
9988                 pf->rss_size = pf->num_lan_qps = 1;
9989
9990                 /* make sure all the fancies are disabled */
9991                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9992 #ifdef I40E_FCOE
9993                                I40E_FLAG_FCOE_ENABLED   |
9994 #endif
9995                                I40E_FLAG_FD_SB_ENABLED  |
9996                                I40E_FLAG_FD_ATR_ENABLED |
9997                                I40E_FLAG_DCB_CAPABLE    |
9998                                I40E_FLAG_SRIOV_ENABLED  |
9999                                I40E_FLAG_VMDQ_ENABLED);
10000         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10001                                   I40E_FLAG_FD_SB_ENABLED |
10002                                   I40E_FLAG_FD_ATR_ENABLED |
10003                                   I40E_FLAG_DCB_CAPABLE))) {
10004                 /* one qp for PF */
10005                 pf->rss_size = pf->num_lan_qps = 1;
10006                 queues_left -= pf->num_lan_qps;
10007
10008                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10009 #ifdef I40E_FCOE
10010                                I40E_FLAG_FCOE_ENABLED   |
10011 #endif
10012                                I40E_FLAG_FD_SB_ENABLED  |
10013                                I40E_FLAG_FD_ATR_ENABLED |
10014                                I40E_FLAG_DCB_ENABLED    |
10015                                I40E_FLAG_VMDQ_ENABLED);
10016         } else {
10017                 /* Not enough queues for all TCs */
10018                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10019                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10020                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10021                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10022                 }
10023                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10024                                         num_online_cpus());
10025                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10026                                         pf->hw.func_caps.num_tx_qp);
10027
10028                 queues_left -= pf->num_lan_qps;
10029         }
10030
10031 #ifdef I40E_FCOE
10032         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10033                 if (I40E_DEFAULT_FCOE <= queues_left) {
10034                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10035                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10036                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10037                 } else {
10038                         pf->num_fcoe_qps = 0;
10039                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10040                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10041                 }
10042
10043                 queues_left -= pf->num_fcoe_qps;
10044         }
10045
10046 #endif
10047         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10048                 if (queues_left > 1) {
10049                         queues_left -= 1; /* save 1 queue for FD */
10050                 } else {
10051                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10052                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10053                 }
10054         }
10055
10056         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10057             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10058                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10059                                         (queues_left / pf->num_vf_qps));
10060                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10061         }
10062
10063         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10064             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10065                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10066                                           (queues_left / pf->num_vmdq_qps));
10067                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10068         }
10069
10070         pf->queues_left = queues_left;
10071         dev_dbg(&pf->pdev->dev,
10072                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10073                 pf->hw.func_caps.num_tx_qp,
10074                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10075                 pf->num_lan_qps, pf->rss_size, pf->num_req_vfs, pf->num_vf_qps,
10076                 pf->num_vmdq_vsis, pf->num_vmdq_qps, queues_left);
10077 #ifdef I40E_FCOE
10078         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10079 #endif
10080 }
10081
10082 /**
10083  * i40e_setup_pf_filter_control - Setup PF static filter control
10084  * @pf: PF to be setup
10085  *
10086  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10087  * settings. If PE/FCoE are enabled then it will also set the per PF
10088  * based filter sizes required for them. It also enables Flow director,
10089  * ethertype and macvlan type filter settings for the pf.
10090  *
10091  * Returns 0 on success, negative on failure
10092  **/
10093 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10094 {
10095         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10096
10097         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10098
10099         /* Flow Director is enabled */
10100         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10101                 settings->enable_fdir = true;
10102
10103         /* Ethtype and MACVLAN filters enabled for PF */
10104         settings->enable_ethtype = true;
10105         settings->enable_macvlan = true;
10106
10107         if (i40e_set_filter_control(&pf->hw, settings))
10108                 return -ENOENT;
10109
10110         return 0;
10111 }
10112
10113 #define INFO_STRING_LEN 255
10114 static void i40e_print_features(struct i40e_pf *pf)
10115 {
10116         struct i40e_hw *hw = &pf->hw;
10117         char *buf, *string;
10118
10119         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10120         if (!string) {
10121                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10122                 return;
10123         }
10124
10125         buf = string;
10126
10127         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
10128 #ifdef CONFIG_PCI_IOV
10129         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
10130 #endif
10131         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
10132                        pf->hw.func_caps.num_vsis,
10133                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
10134                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10135
10136         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10137                 buf += sprintf(buf, "RSS ");
10138         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10139                 buf += sprintf(buf, "FD_ATR ");
10140         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10141                 buf += sprintf(buf, "FD_SB ");
10142                 buf += sprintf(buf, "NTUPLE ");
10143         }
10144         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10145                 buf += sprintf(buf, "DCB ");
10146 #if IS_ENABLED(CONFIG_VXLAN)
10147         buf += sprintf(buf, "VxLAN ");
10148 #endif
10149         if (pf->flags & I40E_FLAG_PTP)
10150                 buf += sprintf(buf, "PTP ");
10151 #ifdef I40E_FCOE
10152         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10153                 buf += sprintf(buf, "FCOE ");
10154 #endif
10155         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10156                 buf += sprintf(buf, "VEB ");
10157         else
10158                 buf += sprintf(buf, "VEPA ");
10159
10160         BUG_ON(buf > (string + INFO_STRING_LEN));
10161         dev_info(&pf->pdev->dev, "%s\n", string);
10162         kfree(string);
10163 }
10164
10165 /**
10166  * i40e_probe - Device initialization routine
10167  * @pdev: PCI device information struct
10168  * @ent: entry in i40e_pci_tbl
10169  *
10170  * i40e_probe initializes a PF identified by a pci_dev structure.
10171  * The OS initialization, configuring of the PF private structure,
10172  * and a hardware reset occur.
10173  *
10174  * Returns 0 on success, negative on failure
10175  **/
10176 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10177 {
10178         struct i40e_aq_get_phy_abilities_resp abilities;
10179         struct i40e_pf *pf;
10180         struct i40e_hw *hw;
10181         static u16 pfs_found;
10182         u16 wol_nvm_bits;
10183         u16 link_status;
10184         int err;
10185         u32 len;
10186         u32 i;
10187         u8 set_fc_aq_fail;
10188
10189         err = pci_enable_device_mem(pdev);
10190         if (err)
10191                 return err;
10192
10193         /* set up for high or low dma */
10194         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10195         if (err) {
10196                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10197                 if (err) {
10198                         dev_err(&pdev->dev,
10199                                 "DMA configuration failed: 0x%x\n", err);
10200                         goto err_dma;
10201                 }
10202         }
10203
10204         /* set up pci connections */
10205         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10206                                            IORESOURCE_MEM), i40e_driver_name);
10207         if (err) {
10208                 dev_info(&pdev->dev,
10209                          "pci_request_selected_regions failed %d\n", err);
10210                 goto err_pci_reg;
10211         }
10212
10213         pci_enable_pcie_error_reporting(pdev);
10214         pci_set_master(pdev);
10215
10216         /* Now that we have a PCI connection, we need to do the
10217          * low level device setup.  This is primarily setting up
10218          * the Admin Queue structures and then querying for the
10219          * device's current profile information.
10220          */
10221         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10222         if (!pf) {
10223                 err = -ENOMEM;
10224                 goto err_pf_alloc;
10225         }
10226         pf->next_vsi = 0;
10227         pf->pdev = pdev;
10228         set_bit(__I40E_DOWN, &pf->state);
10229
10230         hw = &pf->hw;
10231         hw->back = pf;
10232
10233         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10234                                 I40E_MAX_CSR_SPACE);
10235
10236         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10237         if (!hw->hw_addr) {
10238                 err = -EIO;
10239                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10240                          (unsigned int)pci_resource_start(pdev, 0),
10241                          pf->ioremap_len, err);
10242                 goto err_ioremap;
10243         }
10244         hw->vendor_id = pdev->vendor;
10245         hw->device_id = pdev->device;
10246         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10247         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10248         hw->subsystem_device_id = pdev->subsystem_device;
10249         hw->bus.device = PCI_SLOT(pdev->devfn);
10250         hw->bus.func = PCI_FUNC(pdev->devfn);
10251         pf->instance = pfs_found;
10252
10253         if (debug != -1) {
10254                 pf->msg_enable = pf->hw.debug_mask;
10255                 pf->msg_enable = debug;
10256         }
10257
10258         /* do a special CORER for clearing PXE mode once at init */
10259         if (hw->revision_id == 0 &&
10260             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10261                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10262                 i40e_flush(hw);
10263                 msleep(200);
10264                 pf->corer_count++;
10265
10266                 i40e_clear_pxe_mode(hw);
10267         }
10268
10269         /* Reset here to make sure all is clean and to define PF 'n' */
10270         i40e_clear_hw(hw);
10271         err = i40e_pf_reset(hw);
10272         if (err) {
10273                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10274                 goto err_pf_reset;
10275         }
10276         pf->pfr_count++;
10277
10278         hw->aq.num_arq_entries = I40E_AQ_LEN;
10279         hw->aq.num_asq_entries = I40E_AQ_LEN;
10280         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10281         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10282         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10283
10284         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10285                  "%s-%s:misc",
10286                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10287
10288         err = i40e_init_shared_code(hw);
10289         if (err) {
10290                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10291                          err);
10292                 goto err_pf_reset;
10293         }
10294
10295         /* set up a default setting for link flow control */
10296         pf->hw.fc.requested_mode = I40E_FC_NONE;
10297
10298         err = i40e_init_adminq(hw);
10299
10300         /* provide nvm, fw, api versions */
10301         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10302                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10303                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10304                  i40e_nvm_version_str(hw));
10305
10306         if (err) {
10307                 dev_info(&pdev->dev,
10308                          "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");
10309                 goto err_pf_reset;
10310         }
10311
10312         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10313             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10314                 dev_info(&pdev->dev,
10315                          "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");
10316         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10317                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10318                 dev_info(&pdev->dev,
10319                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10320
10321         i40e_verify_eeprom(pf);
10322
10323         /* Rev 0 hardware was never productized */
10324         if (hw->revision_id < 1)
10325                 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");
10326
10327         i40e_clear_pxe_mode(hw);
10328         err = i40e_get_capabilities(pf);
10329         if (err)
10330                 goto err_adminq_setup;
10331
10332         err = i40e_sw_init(pf);
10333         if (err) {
10334                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10335                 goto err_sw_init;
10336         }
10337
10338         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10339                                 hw->func_caps.num_rx_qp,
10340                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10341         if (err) {
10342                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10343                 goto err_init_lan_hmc;
10344         }
10345
10346         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10347         if (err) {
10348                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10349                 err = -ENOENT;
10350                 goto err_configure_lan_hmc;
10351         }
10352
10353         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10354          * Ignore error return codes because if it was already disabled via
10355          * hardware settings this will fail
10356          */
10357         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10358             (pf->hw.aq.fw_maj_ver < 4)) {
10359                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10360                 i40e_aq_stop_lldp(hw, true, NULL);
10361         }
10362
10363         i40e_get_mac_addr(hw, hw->mac.addr);
10364         if (!is_valid_ether_addr(hw->mac.addr)) {
10365                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10366                 err = -EIO;
10367                 goto err_mac_addr;
10368         }
10369         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10370         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10371         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10372         if (is_valid_ether_addr(hw->mac.port_addr))
10373                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10374 #ifdef I40E_FCOE
10375         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10376         if (err)
10377                 dev_info(&pdev->dev,
10378                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10379         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10380                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10381                          hw->mac.san_addr);
10382                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10383         }
10384         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10385 #endif /* I40E_FCOE */
10386
10387         pci_set_drvdata(pdev, pf);
10388         pci_save_state(pdev);
10389 #ifdef CONFIG_I40E_DCB
10390         err = i40e_init_pf_dcb(pf);
10391         if (err) {
10392                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10393                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10394                 /* Continue without DCB enabled */
10395         }
10396 #endif /* CONFIG_I40E_DCB */
10397
10398         /* set up periodic task facility */
10399         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10400         pf->service_timer_period = HZ;
10401
10402         INIT_WORK(&pf->service_task, i40e_service_task);
10403         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10404         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10405
10406         /* NVM bit on means WoL disabled for the port */
10407         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10408         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10409                 pf->wol_en = false;
10410         else
10411                 pf->wol_en = true;
10412         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10413
10414         /* set up the main switch operations */
10415         i40e_determine_queue_usage(pf);
10416         err = i40e_init_interrupt_scheme(pf);
10417         if (err)
10418                 goto err_switch_setup;
10419
10420         /* The number of VSIs reported by the FW is the minimum guaranteed
10421          * to us; HW supports far more and we share the remaining pool with
10422          * the other PFs. We allocate space for more than the guarantee with
10423          * the understanding that we might not get them all later.
10424          */
10425         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10426                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10427         else
10428                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10429
10430         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10431         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10432         pf->vsi = kzalloc(len, GFP_KERNEL);
10433         if (!pf->vsi) {
10434                 err = -ENOMEM;
10435                 goto err_switch_setup;
10436         }
10437
10438 #ifdef CONFIG_PCI_IOV
10439         /* prep for VF support */
10440         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10441             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10442             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10443                 if (pci_num_vf(pdev))
10444                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10445         }
10446 #endif
10447         err = i40e_setup_pf_switch(pf, false);
10448         if (err) {
10449                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10450                 goto err_vsis;
10451         }
10452
10453         /* Make sure flow control is set according to current settings */
10454         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10455         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10456                 dev_dbg(&pf->pdev->dev,
10457                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10458                         i40e_stat_str(hw, err),
10459                         i40e_aq_str(hw, hw->aq.asq_last_status));
10460         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10461                 dev_dbg(&pf->pdev->dev,
10462                         "Set fc with err %s aq_err %s on set_phy_config\n",
10463                         i40e_stat_str(hw, err),
10464                         i40e_aq_str(hw, hw->aq.asq_last_status));
10465         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10466                 dev_dbg(&pf->pdev->dev,
10467                         "Set fc with err %s aq_err %s on get_link_info\n",
10468                         i40e_stat_str(hw, err),
10469                         i40e_aq_str(hw, hw->aq.asq_last_status));
10470
10471         /* if FDIR VSI was set up, start it now */
10472         for (i = 0; i < pf->num_alloc_vsi; i++) {
10473                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10474                         i40e_vsi_open(pf->vsi[i]);
10475                         break;
10476                 }
10477         }
10478
10479         /* driver is only interested in link up/down and module qualification
10480          * reports from firmware
10481          */
10482         err = i40e_aq_set_phy_int_mask(&pf->hw,
10483                                        I40E_AQ_EVENT_LINK_UPDOWN |
10484                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10485         if (err)
10486                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10487                          i40e_stat_str(&pf->hw, err),
10488                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10489
10490         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10491             (pf->hw.aq.fw_maj_ver < 4)) {
10492                 msleep(75);
10493                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10494                 if (err)
10495                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10496                                  i40e_stat_str(&pf->hw, err),
10497                                  i40e_aq_str(&pf->hw,
10498                                              pf->hw.aq.asq_last_status));
10499         }
10500         /* The main driver is (mostly) up and happy. We need to set this state
10501          * before setting up the misc vector or we get a race and the vector
10502          * ends up disabled forever.
10503          */
10504         clear_bit(__I40E_DOWN, &pf->state);
10505
10506         /* In case of MSIX we are going to setup the misc vector right here
10507          * to handle admin queue events etc. In case of legacy and MSI
10508          * the misc functionality and queue processing is combined in
10509          * the same vector and that gets setup at open.
10510          */
10511         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10512                 err = i40e_setup_misc_vector(pf);
10513                 if (err) {
10514                         dev_info(&pdev->dev,
10515                                  "setup of misc vector failed: %d\n", err);
10516                         goto err_vsis;
10517                 }
10518         }
10519
10520 #ifdef CONFIG_PCI_IOV
10521         /* prep for VF support */
10522         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10523             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10524             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10525                 u32 val;
10526
10527                 /* disable link interrupts for VFs */
10528                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10529                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10530                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10531                 i40e_flush(hw);
10532
10533                 if (pci_num_vf(pdev)) {
10534                         dev_info(&pdev->dev,
10535                                  "Active VFs found, allocating resources.\n");
10536                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10537                         if (err)
10538                                 dev_info(&pdev->dev,
10539                                          "Error %d allocating resources for existing VFs\n",
10540                                          err);
10541                 }
10542         }
10543 #endif /* CONFIG_PCI_IOV */
10544
10545         pfs_found++;
10546
10547         i40e_dbg_pf_init(pf);
10548
10549         /* tell the firmware that we're starting */
10550         i40e_send_version(pf);
10551
10552         /* since everything's happy, start the service_task timer */
10553         mod_timer(&pf->service_timer,
10554                   round_jiffies(jiffies + pf->service_timer_period));
10555
10556 #ifdef I40E_FCOE
10557         /* create FCoE interface */
10558         i40e_fcoe_vsi_setup(pf);
10559
10560 #endif
10561 #define PCI_SPEED_SIZE 8
10562 #define PCI_WIDTH_SIZE 8
10563         /* Devices on the IOSF bus do not have this information
10564          * and will report PCI Gen 1 x 1 by default so don't bother
10565          * checking them.
10566          */
10567         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10568                 char speed[PCI_SPEED_SIZE] = "Unknown";
10569                 char width[PCI_WIDTH_SIZE] = "Unknown";
10570
10571                 /* Get the negotiated link width and speed from PCI config
10572                  * space
10573                  */
10574                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10575                                           &link_status);
10576
10577                 i40e_set_pci_config_data(hw, link_status);
10578
10579                 switch (hw->bus.speed) {
10580                 case i40e_bus_speed_8000:
10581                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10582                 case i40e_bus_speed_5000:
10583                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10584                 case i40e_bus_speed_2500:
10585                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10586                 default:
10587                         break;
10588                 }
10589                 switch (hw->bus.width) {
10590                 case i40e_bus_width_pcie_x8:
10591                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10592                 case i40e_bus_width_pcie_x4:
10593                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10594                 case i40e_bus_width_pcie_x2:
10595                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10596                 case i40e_bus_width_pcie_x1:
10597                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10598                 default:
10599                         break;
10600                 }
10601
10602                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10603                          speed, width);
10604
10605                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10606                     hw->bus.speed < i40e_bus_speed_8000) {
10607                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10608                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10609                 }
10610         }
10611
10612         /* get the requested speeds from the fw */
10613         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10614         if (err)
10615                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10616                         i40e_stat_str(&pf->hw, err),
10617                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10618         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10619
10620         /* get the supported phy types from the fw */
10621         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10622         if (err)
10623                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10624                         i40e_stat_str(&pf->hw, err),
10625                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10626         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10627
10628         /* Add a filter to drop all Flow control frames from any VSI from being
10629          * transmitted. By doing so we stop a malicious VF from sending out
10630          * PAUSE or PFC frames and potentially controlling traffic for other
10631          * PF/VF VSIs.
10632          * The FW can still send Flow control frames if enabled.
10633          */
10634         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10635                                                        pf->main_vsi_seid);
10636
10637         /* print a string summarizing features */
10638         i40e_print_features(pf);
10639
10640         return 0;
10641
10642         /* Unwind what we've done if something failed in the setup */
10643 err_vsis:
10644         set_bit(__I40E_DOWN, &pf->state);
10645         i40e_clear_interrupt_scheme(pf);
10646         kfree(pf->vsi);
10647 err_switch_setup:
10648         i40e_reset_interrupt_capability(pf);
10649         del_timer_sync(&pf->service_timer);
10650 err_mac_addr:
10651 err_configure_lan_hmc:
10652         (void)i40e_shutdown_lan_hmc(hw);
10653 err_init_lan_hmc:
10654         kfree(pf->qp_pile);
10655 err_sw_init:
10656 err_adminq_setup:
10657         (void)i40e_shutdown_adminq(hw);
10658 err_pf_reset:
10659         iounmap(hw->hw_addr);
10660 err_ioremap:
10661         kfree(pf);
10662 err_pf_alloc:
10663         pci_disable_pcie_error_reporting(pdev);
10664         pci_release_selected_regions(pdev,
10665                                      pci_select_bars(pdev, IORESOURCE_MEM));
10666 err_pci_reg:
10667 err_dma:
10668         pci_disable_device(pdev);
10669         return err;
10670 }
10671
10672 /**
10673  * i40e_remove - Device removal routine
10674  * @pdev: PCI device information struct
10675  *
10676  * i40e_remove is called by the PCI subsystem to alert the driver
10677  * that is should release a PCI device.  This could be caused by a
10678  * Hot-Plug event, or because the driver is going to be removed from
10679  * memory.
10680  **/
10681 static void i40e_remove(struct pci_dev *pdev)
10682 {
10683         struct i40e_pf *pf = pci_get_drvdata(pdev);
10684         struct i40e_hw *hw = &pf->hw;
10685         i40e_status ret_code;
10686         int i;
10687
10688         i40e_dbg_pf_exit(pf);
10689
10690         i40e_ptp_stop(pf);
10691
10692         /* Disable RSS in hw */
10693         wr32(hw, I40E_PFQF_HENA(0), 0);
10694         wr32(hw, I40E_PFQF_HENA(1), 0);
10695
10696         /* no more scheduling of any task */
10697         set_bit(__I40E_DOWN, &pf->state);
10698         del_timer_sync(&pf->service_timer);
10699         cancel_work_sync(&pf->service_task);
10700         i40e_fdir_teardown(pf);
10701
10702         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10703                 i40e_free_vfs(pf);
10704                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10705         }
10706
10707         i40e_fdir_teardown(pf);
10708
10709         /* If there is a switch structure or any orphans, remove them.
10710          * This will leave only the PF's VSI remaining.
10711          */
10712         for (i = 0; i < I40E_MAX_VEB; i++) {
10713                 if (!pf->veb[i])
10714                         continue;
10715
10716                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10717                     pf->veb[i]->uplink_seid == 0)
10718                         i40e_switch_branch_release(pf->veb[i]);
10719         }
10720
10721         /* Now we can shutdown the PF's VSI, just before we kill
10722          * adminq and hmc.
10723          */
10724         if (pf->vsi[pf->lan_vsi])
10725                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10726
10727         /* shutdown and destroy the HMC */
10728         if (pf->hw.hmc.hmc_obj) {
10729                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10730                 if (ret_code)
10731                         dev_warn(&pdev->dev,
10732                                  "Failed to destroy the HMC resources: %d\n",
10733                                  ret_code);
10734         }
10735
10736         /* shutdown the adminq */
10737         ret_code = i40e_shutdown_adminq(&pf->hw);
10738         if (ret_code)
10739                 dev_warn(&pdev->dev,
10740                          "Failed to destroy the Admin Queue resources: %d\n",
10741                          ret_code);
10742
10743         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10744         i40e_clear_interrupt_scheme(pf);
10745         for (i = 0; i < pf->num_alloc_vsi; i++) {
10746                 if (pf->vsi[i]) {
10747                         i40e_vsi_clear_rings(pf->vsi[i]);
10748                         i40e_vsi_clear(pf->vsi[i]);
10749                         pf->vsi[i] = NULL;
10750                 }
10751         }
10752
10753         for (i = 0; i < I40E_MAX_VEB; i++) {
10754                 kfree(pf->veb[i]);
10755                 pf->veb[i] = NULL;
10756         }
10757
10758         kfree(pf->qp_pile);
10759         kfree(pf->vsi);
10760
10761         iounmap(pf->hw.hw_addr);
10762         kfree(pf);
10763         pci_release_selected_regions(pdev,
10764                                      pci_select_bars(pdev, IORESOURCE_MEM));
10765
10766         pci_disable_pcie_error_reporting(pdev);
10767         pci_disable_device(pdev);
10768 }
10769
10770 /**
10771  * i40e_pci_error_detected - warning that something funky happened in PCI land
10772  * @pdev: PCI device information struct
10773  *
10774  * Called to warn that something happened and the error handling steps
10775  * are in progress.  Allows the driver to quiesce things, be ready for
10776  * remediation.
10777  **/
10778 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10779                                                 enum pci_channel_state error)
10780 {
10781         struct i40e_pf *pf = pci_get_drvdata(pdev);
10782
10783         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10784
10785         /* shutdown all operations */
10786         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10787                 rtnl_lock();
10788                 i40e_prep_for_reset(pf);
10789                 rtnl_unlock();
10790         }
10791
10792         /* Request a slot reset */
10793         return PCI_ERS_RESULT_NEED_RESET;
10794 }
10795
10796 /**
10797  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10798  * @pdev: PCI device information struct
10799  *
10800  * Called to find if the driver can work with the device now that
10801  * the pci slot has been reset.  If a basic connection seems good
10802  * (registers are readable and have sane content) then return a
10803  * happy little PCI_ERS_RESULT_xxx.
10804  **/
10805 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10806 {
10807         struct i40e_pf *pf = pci_get_drvdata(pdev);
10808         pci_ers_result_t result;
10809         int err;
10810         u32 reg;
10811
10812         dev_dbg(&pdev->dev, "%s\n", __func__);
10813         if (pci_enable_device_mem(pdev)) {
10814                 dev_info(&pdev->dev,
10815                          "Cannot re-enable PCI device after reset.\n");
10816                 result = PCI_ERS_RESULT_DISCONNECT;
10817         } else {
10818                 pci_set_master(pdev);
10819                 pci_restore_state(pdev);
10820                 pci_save_state(pdev);
10821                 pci_wake_from_d3(pdev, false);
10822
10823                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10824                 if (reg == 0)
10825                         result = PCI_ERS_RESULT_RECOVERED;
10826                 else
10827                         result = PCI_ERS_RESULT_DISCONNECT;
10828         }
10829
10830         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10831         if (err) {
10832                 dev_info(&pdev->dev,
10833                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10834                          err);
10835                 /* non-fatal, continue */
10836         }
10837
10838         return result;
10839 }
10840
10841 /**
10842  * i40e_pci_error_resume - restart operations after PCI error recovery
10843  * @pdev: PCI device information struct
10844  *
10845  * Called to allow the driver to bring things back up after PCI error
10846  * and/or reset recovery has finished.
10847  **/
10848 static void i40e_pci_error_resume(struct pci_dev *pdev)
10849 {
10850         struct i40e_pf *pf = pci_get_drvdata(pdev);
10851
10852         dev_dbg(&pdev->dev, "%s\n", __func__);
10853         if (test_bit(__I40E_SUSPENDED, &pf->state))
10854                 return;
10855
10856         rtnl_lock();
10857         i40e_handle_reset_warning(pf);
10858         rtnl_unlock();
10859 }
10860
10861 /**
10862  * i40e_shutdown - PCI callback for shutting down
10863  * @pdev: PCI device information struct
10864  **/
10865 static void i40e_shutdown(struct pci_dev *pdev)
10866 {
10867         struct i40e_pf *pf = pci_get_drvdata(pdev);
10868         struct i40e_hw *hw = &pf->hw;
10869
10870         set_bit(__I40E_SUSPENDED, &pf->state);
10871         set_bit(__I40E_DOWN, &pf->state);
10872         rtnl_lock();
10873         i40e_prep_for_reset(pf);
10874         rtnl_unlock();
10875
10876         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10877         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10878
10879         del_timer_sync(&pf->service_timer);
10880         cancel_work_sync(&pf->service_task);
10881         i40e_fdir_teardown(pf);
10882
10883         rtnl_lock();
10884         i40e_prep_for_reset(pf);
10885         rtnl_unlock();
10886
10887         wr32(hw, I40E_PFPM_APM,
10888              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10889         wr32(hw, I40E_PFPM_WUFC,
10890              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10891
10892         i40e_clear_interrupt_scheme(pf);
10893
10894         if (system_state == SYSTEM_POWER_OFF) {
10895                 pci_wake_from_d3(pdev, pf->wol_en);
10896                 pci_set_power_state(pdev, PCI_D3hot);
10897         }
10898 }
10899
10900 #ifdef CONFIG_PM
10901 /**
10902  * i40e_suspend - PCI callback for moving to D3
10903  * @pdev: PCI device information struct
10904  **/
10905 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10906 {
10907         struct i40e_pf *pf = pci_get_drvdata(pdev);
10908         struct i40e_hw *hw = &pf->hw;
10909
10910         set_bit(__I40E_SUSPENDED, &pf->state);
10911         set_bit(__I40E_DOWN, &pf->state);
10912
10913         rtnl_lock();
10914         i40e_prep_for_reset(pf);
10915         rtnl_unlock();
10916
10917         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10918         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10919
10920         pci_wake_from_d3(pdev, pf->wol_en);
10921         pci_set_power_state(pdev, PCI_D3hot);
10922
10923         return 0;
10924 }
10925
10926 /**
10927  * i40e_resume - PCI callback for waking up from D3
10928  * @pdev: PCI device information struct
10929  **/
10930 static int i40e_resume(struct pci_dev *pdev)
10931 {
10932         struct i40e_pf *pf = pci_get_drvdata(pdev);
10933         u32 err;
10934
10935         pci_set_power_state(pdev, PCI_D0);
10936         pci_restore_state(pdev);
10937         /* pci_restore_state() clears dev->state_saves, so
10938          * call pci_save_state() again to restore it.
10939          */
10940         pci_save_state(pdev);
10941
10942         err = pci_enable_device_mem(pdev);
10943         if (err) {
10944                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10945                 return err;
10946         }
10947         pci_set_master(pdev);
10948
10949         /* no wakeup events while running */
10950         pci_wake_from_d3(pdev, false);
10951
10952         /* handling the reset will rebuild the device state */
10953         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10954                 clear_bit(__I40E_DOWN, &pf->state);
10955                 rtnl_lock();
10956                 i40e_reset_and_rebuild(pf, false);
10957                 rtnl_unlock();
10958         }
10959
10960         return 0;
10961 }
10962
10963 #endif
10964 static const struct pci_error_handlers i40e_err_handler = {
10965         .error_detected = i40e_pci_error_detected,
10966         .slot_reset = i40e_pci_error_slot_reset,
10967         .resume = i40e_pci_error_resume,
10968 };
10969
10970 static struct pci_driver i40e_driver = {
10971         .name     = i40e_driver_name,
10972         .id_table = i40e_pci_tbl,
10973         .probe    = i40e_probe,
10974         .remove   = i40e_remove,
10975 #ifdef CONFIG_PM
10976         .suspend  = i40e_suspend,
10977         .resume   = i40e_resume,
10978 #endif
10979         .shutdown = i40e_shutdown,
10980         .err_handler = &i40e_err_handler,
10981         .sriov_configure = i40e_pci_sriov_configure,
10982 };
10983
10984 /**
10985  * i40e_init_module - Driver registration routine
10986  *
10987  * i40e_init_module is the first routine called when the driver is
10988  * loaded. All it does is register with the PCI subsystem.
10989  **/
10990 static int __init i40e_init_module(void)
10991 {
10992         pr_info("%s: %s - version %s\n", i40e_driver_name,
10993                 i40e_driver_string, i40e_driver_version_str);
10994         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10995
10996         i40e_dbg_init();
10997         return pci_register_driver(&i40e_driver);
10998 }
10999 module_init(i40e_init_module);
11000
11001 /**
11002  * i40e_exit_module - Driver exit cleanup routine
11003  *
11004  * i40e_exit_module is called just before the driver is removed
11005  * from memory.
11006  **/
11007 static void __exit i40e_exit_module(void)
11008 {
11009         pci_unregister_driver(&i40e_driver);
11010         i40e_dbg_exit();
11011 }
11012 module_exit(i40e_exit_module);