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 tx_force_wb;
 885         u64 rx_p, rx_b;
 886         u64 tx_p, tx_b;
 887         u16 q;
 888
 889         if (test_bit(__I40E_DOWN, &vsi->state) ||
 890             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 891                 return;
 892
 893         ns = i40e_get_vsi_stats_struct(vsi);
 894         ons = &vsi->net_stats_offsets;
 895         es = &vsi->eth_stats;
 896         oes = &vsi->eth_stats_offsets;
 897
 898         /* Gather up the netdev and vsi stats that the driver collects
 899          * on the fly during packet processing
 900          */
 901         rx_b = rx_p = 0;
 902         tx_b = tx_p = 0;
 903         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 904         rx_page = 0;
 905         rx_buf = 0;
 906         rcu_read_lock();
 907         for (q = 0; q < vsi->num_queue_pairs; q++) {
 908                 /* locate Tx ring */
 909                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 910
 911                 do {
 912                         start = u64_stats_fetch_begin_irq(&p->syncp);
 913                         packets = p->stats.packets;
 914                         bytes = p->stats.bytes;
 915                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 916                 tx_b += bytes;
 917                 tx_p += packets;
 918                 tx_restart += p->tx_stats.restart_queue;
 919                 tx_busy += p->tx_stats.tx_busy;
 920                 tx_linearize += p->tx_stats.tx_linearize;
 921                 tx_force_wb += p->tx_stats.tx_force_wb;
 922
 923                 /* Rx queue is part of the same block as Tx queue */
 924                 p = &p[1];
 925                 do {
 926                         start = u64_stats_fetch_begin_irq(&p->syncp);
 927                         packets = p->stats.packets;
 928                         bytes = p->stats.bytes;
 929                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 930                 rx_b += bytes;
 931                 rx_p += packets;
 932                 rx_buf += p->rx_stats.alloc_buff_failed;
 933                 rx_page += p->rx_stats.alloc_page_failed;
 934         }
 935         rcu_read_unlock();
 936         vsi->tx_restart = tx_restart;
 937         vsi->tx_busy = tx_busy;
 938         vsi->tx_linearize = tx_linearize;
 939         vsi->tx_force_wb = tx_force_wb;
 940         vsi->rx_page_failed = rx_page;
 941         vsi->rx_buf_failed = rx_buf;
 942
 943         ns->rx_packets = rx_p;
 944         ns->rx_bytes = rx_b;
 945         ns->tx_packets = tx_p;
 946         ns->tx_bytes = tx_b;
 947
 948         /* update netdev stats from eth stats */
 949         i40e_update_eth_stats(vsi);
 950         ons->tx_errors = oes->tx_errors;
 951         ns->tx_errors = es->tx_errors;
 952         ons->multicast = oes->rx_multicast;
 953         ns->multicast = es->rx_multicast;
 954         ons->rx_dropped = oes->rx_discards;
 955         ns->rx_dropped = es->rx_discards;
 956         ons->tx_dropped = oes->tx_discards;
 957         ns->tx_dropped = es->tx_discards;
 958
 959         /* pull in a couple PF stats if this is the main vsi */
 960         if (vsi == pf->vsi[pf->lan_vsi]) {
 961                 ns->rx_crc_errors = pf->stats.crc_errors;
 962                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 963                 ns->rx_length_errors = pf->stats.rx_length_errors;
 964         }
 965 }
 966
 967 /**
 968  * i40e_update_pf_stats - Update the PF statistics counters.
 969  * @pf: the PF to be updated
 970  **/
 971 static void i40e_update_pf_stats(struct i40e_pf *pf)
 972 {
 973         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 974         struct i40e_hw_port_stats *nsd = &pf->stats;
 975         struct i40e_hw *hw = &pf->hw;
 976         u32 val;
 977         int i;
 978
 979         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 980                            I40E_GLPRT_GORCL(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 983         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 984                            I40E_GLPRT_GOTCL(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 987         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->eth.rx_discards,
 990                            &nsd->eth.rx_discards);
 991         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 992                            I40E_GLPRT_UPRCL(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->eth.rx_unicast,
 995                            &nsd->eth.rx_unicast);
 996         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 997                            I40E_GLPRT_MPRCL(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->eth.rx_multicast,
1000                            &nsd->eth.rx_multicast);
1001         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1002                            I40E_GLPRT_BPRCL(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->eth.rx_broadcast,
1005                            &nsd->eth.rx_broadcast);
1006         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1007                            I40E_GLPRT_UPTCL(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->eth.tx_unicast,
1010                            &nsd->eth.tx_unicast);
1011         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1012                            I40E_GLPRT_MPTCL(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->eth.tx_multicast,
1015                            &nsd->eth.tx_multicast);
1016         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1017                            I40E_GLPRT_BPTCL(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->eth.tx_broadcast,
1020                            &nsd->eth.tx_broadcast);
1021
1022         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1023                            pf->stat_offsets_loaded,
1024                            &osd->tx_dropped_link_down,
1025                            &nsd->tx_dropped_link_down);
1026
1027         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->crc_errors, &nsd->crc_errors);
1030
1031         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->illegal_bytes, &nsd->illegal_bytes);
1034
1035         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->mac_local_faults,
1038                            &nsd->mac_local_faults);
1039         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->mac_remote_faults,
1042                            &nsd->mac_remote_faults);
1043
1044         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->rx_length_errors,
1047                            &nsd->rx_length_errors);
1048
1049         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xon_rx, &nsd->link_xon_rx);
1052         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->link_xon_tx, &nsd->link_xon_tx);
1055         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1056         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1057                            pf->stat_offsets_loaded,
1058                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1059
1060         for (i = 0; i < 8; i++) {
1061                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1062                                    pf->stat_offsets_loaded,
1063                                    &osd->priority_xon_rx[i],
1064                                    &nsd->priority_xon_rx[i]);
1065                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1066                                    pf->stat_offsets_loaded,
1067                                    &osd->priority_xon_tx[i],
1068                                    &nsd->priority_xon_tx[i]);
1069                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1070                                    pf->stat_offsets_loaded,
1071                                    &osd->priority_xoff_tx[i],
1072                                    &nsd->priority_xoff_tx[i]);
1073                 i40e_stat_update32(hw,
1074                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1075                                    pf->stat_offsets_loaded,
1076                                    &osd->priority_xon_2_xoff[i],
1077                                    &nsd->priority_xon_2_xoff[i]);
1078         }
1079
1080         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1081                            I40E_GLPRT_PRC64L(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_size_64, &nsd->rx_size_64);
1084         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1085                            I40E_GLPRT_PRC127L(hw->port),
1086                            pf->stat_offsets_loaded,
1087                            &osd->rx_size_127, &nsd->rx_size_127);
1088         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1089                            I40E_GLPRT_PRC255L(hw->port),
1090                            pf->stat_offsets_loaded,
1091                            &osd->rx_size_255, &nsd->rx_size_255);
1092         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1093                            I40E_GLPRT_PRC511L(hw->port),
1094                            pf->stat_offsets_loaded,
1095                            &osd->rx_size_511, &nsd->rx_size_511);
1096         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1097                            I40E_GLPRT_PRC1023L(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_size_1023, &nsd->rx_size_1023);
1100         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1101                            I40E_GLPRT_PRC1522L(hw->port),
1102                            pf->stat_offsets_loaded,
1103                            &osd->rx_size_1522, &nsd->rx_size_1522);
1104         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1105                            I40E_GLPRT_PRC9522L(hw->port),
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_size_big, &nsd->rx_size_big);
1108
1109         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1110                            I40E_GLPRT_PTC64L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->tx_size_64, &nsd->tx_size_64);
1113         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1114                            I40E_GLPRT_PTC127L(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->tx_size_127, &nsd->tx_size_127);
1117         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1118                            I40E_GLPRT_PTC255L(hw->port),
1119                            pf->stat_offsets_loaded,
1120                            &osd->tx_size_255, &nsd->tx_size_255);
1121         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1122                            I40E_GLPRT_PTC511L(hw->port),
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_size_511, &nsd->tx_size_511);
1125         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1126                            I40E_GLPRT_PTC1023L(hw->port),
1127                            pf->stat_offsets_loaded,
1128                            &osd->tx_size_1023, &nsd->tx_size_1023);
1129         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1130                            I40E_GLPRT_PTC1522L(hw->port),
1131                            pf->stat_offsets_loaded,
1132                            &osd->tx_size_1522, &nsd->tx_size_1522);
1133         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1134                            I40E_GLPRT_PTC9522L(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->tx_size_big, &nsd->tx_size_big);
1137
1138         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1139                            pf->stat_offsets_loaded,
1140                            &osd->rx_undersize, &nsd->rx_undersize);
1141         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1142                            pf->stat_offsets_loaded,
1143                            &osd->rx_fragments, &nsd->rx_fragments);
1144         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1145                            pf->stat_offsets_loaded,
1146                            &osd->rx_oversize, &nsd->rx_oversize);
1147         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1148                            pf->stat_offsets_loaded,
1149                            &osd->rx_jabber, &nsd->rx_jabber);
1150
1151         /* FDIR stats */
1152         i40e_stat_update32(hw,
1153                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1154                            pf->stat_offsets_loaded,
1155                            &osd->fd_atr_match, &nsd->fd_atr_match);
1156         i40e_stat_update32(hw,
1157                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1158                            pf->stat_offsets_loaded,
1159                            &osd->fd_sb_match, &nsd->fd_sb_match);
1160         i40e_stat_update32(hw,
1161                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1162                       pf->stat_offsets_loaded,
1163                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1164
1165         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1166         nsd->tx_lpi_status =
1167                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1168                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1169         nsd->rx_lpi_status =
1170                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1171                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1172         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1173                            pf->stat_offsets_loaded,
1174                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1175         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1176                            pf->stat_offsets_loaded,
1177                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1178
1179         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1180             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1181                 nsd->fd_sb_status = true;
1182         else
1183                 nsd->fd_sb_status = false;
1184
1185         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1186             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1187                 nsd->fd_atr_status = true;
1188         else
1189                 nsd->fd_atr_status = false;
1190
1191         pf->stat_offsets_loaded = true;
1192 }
1193
1194 /**
1195  * i40e_update_stats - Update the various statistics counters.
1196  * @vsi: the VSI to be updated
1197  *
1198  * Update the various stats for this VSI and its related entities.
1199  **/
1200 void i40e_update_stats(struct i40e_vsi *vsi)
1201 {
1202         struct i40e_pf *pf = vsi->back;
1203
1204         if (vsi == pf->vsi[pf->lan_vsi])
1205                 i40e_update_pf_stats(pf);
1206
1207         i40e_update_vsi_stats(vsi);
1208 #ifdef I40E_FCOE
1209         i40e_update_fcoe_stats(vsi);
1210 #endif
1211 }
1212
1213 /**
1214  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1215  * @vsi: the VSI to be searched
1216  * @macaddr: the MAC address
1217  * @vlan: the vlan
1218  * @is_vf: make sure its a VF filter, else doesn't matter
1219  * @is_netdev: make sure its a netdev filter, else doesn't matter
1220  *
1221  * Returns ptr to the filter object or NULL
1222  **/
1223 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1224                                                 u8 *macaddr, s16 vlan,
1225                                                 bool is_vf, bool is_netdev)
1226 {
1227         struct i40e_mac_filter *f;
1228
1229         if (!vsi || !macaddr)
1230                 return NULL;
1231
1232         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1233                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1234                     (vlan == f->vlan)    &&
1235                     (!is_vf || f->is_vf) &&
1236                     (!is_netdev || f->is_netdev))
1237                         return f;
1238         }
1239         return NULL;
1240 }
1241
1242 /**
1243  * i40e_find_mac - Find a mac addr in the macvlan filters list
1244  * @vsi: the VSI to be searched
1245  * @macaddr: the MAC address we are searching for
1246  * @is_vf: make sure its a VF filter, else doesn't matter
1247  * @is_netdev: make sure its a netdev filter, else doesn't matter
1248  *
1249  * Returns the first filter with the provided MAC address or NULL if
1250  * MAC address was not found
1251  **/
1252 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1253                                       bool is_vf, bool is_netdev)
1254 {
1255         struct i40e_mac_filter *f;
1256
1257         if (!vsi || !macaddr)
1258                 return NULL;
1259
1260         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1261                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1262                     (!is_vf || f->is_vf) &&
1263                     (!is_netdev || f->is_netdev))
1264                         return f;
1265         }
1266         return NULL;
1267 }
1268
1269 /**
1270  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1271  * @vsi: the VSI to be searched
1272  *
1273  * Returns true if VSI is in vlan mode or false otherwise
1274  **/
1275 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1276 {
1277         struct i40e_mac_filter *f;
1278
1279         /* Only -1 for all the filters denotes not in vlan mode
1280          * so we have to go through all the list in order to make sure
1281          */
1282         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1283                 if (f->vlan >= 0 || vsi->info.pvid)
1284                         return true;
1285         }
1286
1287         return false;
1288 }
1289
1290 /**
1291  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1292  * @vsi: the VSI to be searched
1293  * @macaddr: the mac address to be filtered
1294  * @is_vf: true if it is a VF
1295  * @is_netdev: true if it is a netdev
1296  *
1297  * Goes through all the macvlan filters and adds a
1298  * macvlan filter for each unique vlan that already exists
1299  *
1300  * Returns first filter found on success, else NULL
1301  **/
1302 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1303                                              bool is_vf, bool is_netdev)
1304 {
1305         struct i40e_mac_filter *f;
1306
1307         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1308                 if (vsi->info.pvid)
1309                         f->vlan = le16_to_cpu(vsi->info.pvid);
1310                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1311                                       is_vf, is_netdev)) {
1312                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1313                                              is_vf, is_netdev))
1314                                 return NULL;
1315                 }
1316         }
1317
1318         return list_first_entry_or_null(&vsi->mac_filter_list,
1319                                         struct i40e_mac_filter, list);
1320 }
1321
1322 /**
1323  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1324  * @vsi: the PF Main VSI - inappropriate for any other VSI
1325  * @macaddr: the MAC address
1326  *
1327  * Some older firmware configurations set up a default promiscuous VLAN
1328  * filter that needs to be removed.
1329  **/
1330 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1331 {
1332         struct i40e_aqc_remove_macvlan_element_data element;
1333         struct i40e_pf *pf = vsi->back;
1334         i40e_status ret;
1335
1336         /* Only appropriate for the PF main VSI */
1337         if (vsi->type != I40E_VSI_MAIN)
1338                 return -EINVAL;
1339
1340         memset(&element, 0, sizeof(element));
1341         ether_addr_copy(element.mac_addr, macaddr);
1342         element.vlan_tag = 0;
1343         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1344                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1345         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1346         if (ret)
1347                 return -ENOENT;
1348
1349         return 0;
1350 }
1351
1352 /**
1353  * i40e_add_filter - Add a mac/vlan filter to the VSI
1354  * @vsi: the VSI to be searched
1355  * @macaddr: the MAC address
1356  * @vlan: the vlan
1357  * @is_vf: make sure its a VF filter, else doesn't matter
1358  * @is_netdev: make sure its a netdev filter, else doesn't matter
1359  *
1360  * Returns ptr to the filter object or NULL when no memory available.
1361  *
1362  * NOTE: This function is expected to be called with mac_filter_list_lock
1363  * being held.
1364  **/
1365 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1366                                         u8 *macaddr, s16 vlan,
1367                                         bool is_vf, bool is_netdev)
1368 {
1369         struct i40e_mac_filter *f;
1370
1371         if (!vsi || !macaddr)
1372                 return NULL;
1373
1374         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1375         if (!f) {
1376                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1377                 if (!f)
1378                         goto add_filter_out;
1379
1380                 ether_addr_copy(f->macaddr, macaddr);
1381                 f->vlan = vlan;
1382                 f->changed = true;
1383
1384                 INIT_LIST_HEAD(&f->list);
1385                 list_add(&f->list, &vsi->mac_filter_list);
1386         }
1387
1388         /* increment counter and add a new flag if needed */
1389         if (is_vf) {
1390                 if (!f->is_vf) {
1391                         f->is_vf = true;
1392                         f->counter++;
1393                 }
1394         } else if (is_netdev) {
1395                 if (!f->is_netdev) {
1396                         f->is_netdev = true;
1397                         f->counter++;
1398                 }
1399         } else {
1400                 f->counter++;
1401         }
1402
1403         /* changed tells sync_filters_subtask to
1404          * push the filter down to the firmware
1405          */
1406         if (f->changed) {
1407                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1408                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1409         }
1410
1411 add_filter_out:
1412         return f;
1413 }
1414
1415 /**
1416  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1417  * @vsi: the VSI to be searched
1418  * @macaddr: the MAC address
1419  * @vlan: the vlan
1420  * @is_vf: make sure it's a VF filter, else doesn't matter
1421  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1422  *
1423  * NOTE: This function is expected to be called with mac_filter_list_lock
1424  * being held.
1425  **/
1426 void i40e_del_filter(struct i40e_vsi *vsi,
1427                      u8 *macaddr, s16 vlan,
1428                      bool is_vf, bool is_netdev)
1429 {
1430         struct i40e_mac_filter *f;
1431
1432         if (!vsi || !macaddr)
1433                 return;
1434
1435         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1436         if (!f || f->counter == 0)
1437                 return;
1438
1439         if (is_vf) {
1440                 if (f->is_vf) {
1441                         f->is_vf = false;
1442                         f->counter--;
1443                 }
1444         } else if (is_netdev) {
1445                 if (f->is_netdev) {
1446                         f->is_netdev = false;
1447                         f->counter--;
1448                 }
1449         } else {
1450                 /* make sure we don't remove a filter in use by VF or netdev */
1451                 int min_f = 0;
1452
1453                 min_f += (f->is_vf ? 1 : 0);
1454                 min_f += (f->is_netdev ? 1 : 0);
1455
1456                 if (f->counter > min_f)
1457                         f->counter--;
1458         }
1459
1460         /* counter == 0 tells sync_filters_subtask to
1461          * remove the filter from the firmware's list
1462          */
1463         if (f->counter == 0) {
1464                 f->changed = true;
1465                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1466                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1467         }
1468 }
1469
1470 /**
1471  * i40e_set_mac - NDO callback to set mac address
1472  * @netdev: network interface device structure
1473  * @p: pointer to an address structure
1474  *
1475  * Returns 0 on success, negative on failure
1476  **/
1477 #ifdef I40E_FCOE
1478 int i40e_set_mac(struct net_device *netdev, void *p)
1479 #else
1480 static int i40e_set_mac(struct net_device *netdev, void *p)
1481 #endif
1482 {
1483         struct i40e_netdev_priv *np = netdev_priv(netdev);
1484         struct i40e_vsi *vsi = np->vsi;
1485         struct i40e_pf *pf = vsi->back;
1486         struct i40e_hw *hw = &pf->hw;
1487         struct sockaddr *addr = p;
1488         struct i40e_mac_filter *f;
1489
1490         if (!is_valid_ether_addr(addr->sa_data))
1491                 return -EADDRNOTAVAIL;
1492
1493         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1494                 netdev_info(netdev, "already using mac address %pM\n",
1495                             addr->sa_data);
1496                 return 0;
1497         }
1498
1499         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1500             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1501                 return -EADDRNOTAVAIL;
1502
1503         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1504                 netdev_info(netdev, "returning to hw mac address %pM\n",
1505                             hw->mac.addr);
1506         else
1507                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1508
1509         if (vsi->type == I40E_VSI_MAIN) {
1510                 i40e_status ret;
1511
1512                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1513                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1514                                                 addr->sa_data, NULL);
1515                 if (ret) {
1516                         netdev_info(netdev,
1517                                     "Addr change for Main VSI failed: %d\n",
1518                                     ret);
1519                         return -EADDRNOTAVAIL;
1520                 }
1521         }
1522
1523         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1524                 struct i40e_aqc_remove_macvlan_element_data element;
1525
1526                 memset(&element, 0, sizeof(element));
1527                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1528                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1529                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1530         } else {
1531                 spin_lock_bh(&vsi->mac_filter_list_lock);
1532                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1533                                 false, false);
1534                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1535         }
1536
1537         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1538                 struct i40e_aqc_add_macvlan_element_data element;
1539
1540                 memset(&element, 0, sizeof(element));
1541                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1542                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1543                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1544         } else {
1545                 spin_lock_bh(&vsi->mac_filter_list_lock);
1546                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1547                                     false, false);
1548                 if (f)
1549                         f->is_laa = true;
1550                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1551         }
1552
1553         i40e_sync_vsi_filters(vsi, false);
1554         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1555
1556         return 0;
1557 }
1558
1559 /**
1560  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1561  * @vsi: the VSI being setup
1562  * @ctxt: VSI context structure
1563  * @enabled_tc: Enabled TCs bitmap
1564  * @is_add: True if called before Add VSI
1565  *
1566  * Setup VSI queue mapping for enabled traffic classes.
1567  **/
1568 #ifdef I40E_FCOE
1569 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1570                               struct i40e_vsi_context *ctxt,
1571                               u8 enabled_tc,
1572                               bool is_add)
1573 #else
1574 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1575                                      struct i40e_vsi_context *ctxt,
1576                                      u8 enabled_tc,
1577                                      bool is_add)
1578 #endif
1579 {
1580         struct i40e_pf *pf = vsi->back;
1581         u16 sections = 0;
1582         u8 netdev_tc = 0;
1583         u16 numtc = 0;
1584         u16 qcount;
1585         u8 offset;
1586         u16 qmap;
1587         int i;
1588         u16 num_tc_qps = 0;
1589
1590         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1591         offset = 0;
1592
1593         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1594                 /* Find numtc from enabled TC bitmap */
1595                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1596                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1597                                 numtc++;
1598                 }
1599                 if (!numtc) {
1600                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1601                         numtc = 1;
1602                 }
1603         } else {
1604                 /* At least TC0 is enabled in case of non-DCB case */
1605                 numtc = 1;
1606         }
1607
1608         vsi->tc_config.numtc = numtc;
1609         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1610         /* Number of queues per enabled TC */
1611         /* In MFP case we can have a much lower count of MSIx
1612          * vectors available and so we need to lower the used
1613          * q count.
1614          */
1615         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1616                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1617         else
1618                 qcount = vsi->alloc_queue_pairs;
1619         num_tc_qps = qcount / numtc;
1620         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1621
1622         /* Setup queue offset/count for all TCs for given VSI */
1623         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1624                 /* See if the given TC is enabled for the given VSI */
1625                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1626                         /* TC is enabled */
1627                         int pow, num_qps;
1628
1629                         switch (vsi->type) {
1630                         case I40E_VSI_MAIN:
1631                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1632                                 break;
1633 #ifdef I40E_FCOE
1634                         case I40E_VSI_FCOE:
1635                                 qcount = num_tc_qps;
1636                                 break;
1637 #endif
1638                         case I40E_VSI_FDIR:
1639                         case I40E_VSI_SRIOV:
1640                         case I40E_VSI_VMDQ2:
1641                         default:
1642                                 qcount = num_tc_qps;
1643                                 WARN_ON(i != 0);
1644                                 break;
1645                         }
1646                         vsi->tc_config.tc_info[i].qoffset = offset;
1647                         vsi->tc_config.tc_info[i].qcount = qcount;
1648
1649                         /* find the next higher power-of-2 of num queue pairs */
1650                         num_qps = qcount;
1651                         pow = 0;
1652                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1653                                 pow++;
1654                                 num_qps >>= 1;
1655                         }
1656
1657                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1658                         qmap =
1659                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1660                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1661
1662                         offset += qcount;
1663                 } else {
1664                         /* TC is not enabled so set the offset to
1665                          * default queue and allocate one queue
1666                          * for the given TC.
1667                          */
1668                         vsi->tc_config.tc_info[i].qoffset = 0;
1669                         vsi->tc_config.tc_info[i].qcount = 1;
1670                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1671
1672                         qmap = 0;
1673                 }
1674                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1675         }
1676
1677         /* Set actual Tx/Rx queue pairs */
1678         vsi->num_queue_pairs = offset;
1679         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1680                 if (vsi->req_queue_pairs > 0)
1681                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1682                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1683                         vsi->num_queue_pairs = pf->num_lan_msix;
1684         }
1685
1686         /* Scheduler section valid can only be set for ADD VSI */
1687         if (is_add) {
1688                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1689
1690                 ctxt->info.up_enable_bits = enabled_tc;
1691         }
1692         if (vsi->type == I40E_VSI_SRIOV) {
1693                 ctxt->info.mapping_flags |=
1694                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1695                 for (i = 0; i < vsi->num_queue_pairs; i++)
1696                         ctxt->info.queue_mapping[i] =
1697                                                cpu_to_le16(vsi->base_queue + i);
1698         } else {
1699                 ctxt->info.mapping_flags |=
1700                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1701                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1702         }
1703         ctxt->info.valid_sections |= cpu_to_le16(sections);
1704 }
1705
1706 /**
1707  * i40e_set_rx_mode - NDO callback to set the netdev filters
1708  * @netdev: network interface device structure
1709  **/
1710 #ifdef I40E_FCOE
1711 void i40e_set_rx_mode(struct net_device *netdev)
1712 #else
1713 static void i40e_set_rx_mode(struct net_device *netdev)
1714 #endif
1715 {
1716         struct i40e_netdev_priv *np = netdev_priv(netdev);
1717         struct i40e_mac_filter *f, *ftmp;
1718         struct i40e_vsi *vsi = np->vsi;
1719         struct netdev_hw_addr *uca;
1720         struct netdev_hw_addr *mca;
1721         struct netdev_hw_addr *ha;
1722
1723         spin_lock_bh(&vsi->mac_filter_list_lock);
1724
1725         /* add addr if not already in the filter list */
1726         netdev_for_each_uc_addr(uca, netdev) {
1727                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1728                         if (i40e_is_vsi_in_vlan(vsi))
1729                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1730                                                      false, true);
1731                         else
1732                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1733                                                 false, true);
1734                 }
1735         }
1736
1737         netdev_for_each_mc_addr(mca, netdev) {
1738                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1739                         if (i40e_is_vsi_in_vlan(vsi))
1740                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1741                                                      false, true);
1742                         else
1743                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1744                                                 false, true);
1745                 }
1746         }
1747
1748         /* remove filter if not in netdev list */
1749         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1750
1751                 if (!f->is_netdev)
1752                         continue;
1753
1754                 netdev_for_each_mc_addr(mca, netdev)
1755                         if (ether_addr_equal(mca->addr, f->macaddr))
1756                                 goto bottom_of_search_loop;
1757
1758                 netdev_for_each_uc_addr(uca, netdev)
1759                         if (ether_addr_equal(uca->addr, f->macaddr))
1760                                 goto bottom_of_search_loop;
1761
1762                 for_each_dev_addr(netdev, ha)
1763                         if (ether_addr_equal(ha->addr, f->macaddr))
1764                                 goto bottom_of_search_loop;
1765
1766                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1767                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1768
1769 bottom_of_search_loop:
1770                 continue;
1771         }
1772         spin_unlock_bh(&vsi->mac_filter_list_lock);
1773
1774         /* check for other flag changes */
1775         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1776                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1777                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1778         }
1779 }
1780
1781 /**
1782  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1783  * @src: source MAC filter entry to be clones
1784  *
1785  * Returns the pointer to newly cloned MAC filter entry or NULL
1786  * in case of error
1787  **/
1788 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1789                                         struct i40e_mac_filter *src)
1790 {
1791         struct i40e_mac_filter *f;
1792
1793         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1794         if (!f)
1795                 return NULL;
1796         *f = *src;
1797
1798         INIT_LIST_HEAD(&f->list);
1799
1800         return f;
1801 }
1802
1803 /**
1804  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1805  * @vsi: pointer to vsi struct
1806  * @from: Pointer to list which contains MAC filter entries - changes to
1807  *        those entries needs to be undone.
1808  *
1809  * MAC filter entries from list were slated to be removed from device.
1810  **/
1811 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1812                                          struct list_head *from)
1813 {
1814         struct i40e_mac_filter *f, *ftmp;
1815
1816         list_for_each_entry_safe(f, ftmp, from, list) {
1817                 f->changed = true;
1818                 /* Move the element back into MAC filter list*/
1819                 list_move_tail(&f->list, &vsi->mac_filter_list);
1820         }
1821 }
1822
1823 /**
1824  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1825  * @vsi: pointer to vsi struct
1826  *
1827  * MAC filter entries from list were slated to be added from device.
1828  **/
1829 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1830 {
1831         struct i40e_mac_filter *f, *ftmp;
1832
1833         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1834                 if (!f->changed && f->counter)
1835                         f->changed = true;
1836         }
1837 }
1838
1839 /**
1840  * i40e_cleanup_add_list - Deletes the element from add list and release
1841  *                      memory
1842  * @add_list: Pointer to list which contains MAC filter entries
1843  **/
1844 static void i40e_cleanup_add_list(struct list_head *add_list)
1845 {
1846         struct i40e_mac_filter *f, *ftmp;
1847
1848         list_for_each_entry_safe(f, ftmp, add_list, list) {
1849                 list_del(&f->list);
1850                 kfree(f);
1851         }
1852 }
1853
1854 /**
1855  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1856  * @vsi: ptr to the VSI
1857  * @grab_rtnl: whether RTNL needs to be grabbed
1858  *
1859  * Push any outstanding VSI filter changes through the AdminQ.
1860  *
1861  * Returns 0 or error value
1862  **/
1863 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1864 {
1865         struct list_head tmp_del_list, tmp_add_list;
1866         struct i40e_mac_filter *f, *ftmp, *fclone;
1867         bool promisc_forced_on = false;
1868         bool add_happened = false;
1869         int filter_list_len = 0;
1870         u32 changed_flags = 0;
1871         bool err_cond = false;
1872         i40e_status ret = 0;
1873         struct i40e_pf *pf;
1874         int num_add = 0;
1875         int num_del = 0;
1876         int aq_err = 0;
1877         u16 cmd_flags;
1878
1879         /* empty array typed pointers, kcalloc later */
1880         struct i40e_aqc_add_macvlan_element_data *add_list;
1881         struct i40e_aqc_remove_macvlan_element_data *del_list;
1882
1883         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1884                 usleep_range(1000, 2000);
1885         pf = vsi->back;
1886
1887         if (vsi->netdev) {
1888                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1889                 vsi->current_netdev_flags = vsi->netdev->flags;
1890         }
1891
1892         INIT_LIST_HEAD(&tmp_del_list);
1893         INIT_LIST_HEAD(&tmp_add_list);
1894
1895         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1896                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1897
1898                 spin_lock_bh(&vsi->mac_filter_list_lock);
1899                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1900                         if (!f->changed)
1901                                 continue;
1902
1903                         if (f->counter != 0)
1904                                 continue;
1905                         f->changed = false;
1906
1907                         /* Move the element into temporary del_list */
1908                         list_move_tail(&f->list, &tmp_del_list);
1909                 }
1910
1911                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1912                         if (!f->changed)
1913                                 continue;
1914
1915                         if (f->counter == 0)
1916                                 continue;
1917                         f->changed = false;
1918
1919                         /* Clone MAC filter entry and add into temporary list */
1920                         fclone = i40e_mac_filter_entry_clone(f);
1921                         if (!fclone) {
1922                                 err_cond = true;
1923                                 break;
1924                         }
1925                         list_add_tail(&fclone->list, &tmp_add_list);
1926                 }
1927
1928                 /* if failed to clone MAC filter entry - undo */
1929                 if (err_cond) {
1930                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1931                         i40e_undo_add_filter_entries(vsi);
1932                 }
1933                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1934
1935                 if (err_cond)
1936                         i40e_cleanup_add_list(&tmp_add_list);
1937         }
1938
1939         /* Now process 'del_list' outside the lock */
1940         if (!list_empty(&tmp_del_list)) {
1941                 filter_list_len = pf->hw.aq.asq_buf_size /
1942                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1943                 del_list = kcalloc(filter_list_len,
1944                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1945                             GFP_KERNEL);
1946                 if (!del_list) {
1947                         i40e_cleanup_add_list(&tmp_add_list);
1948
1949                         /* Undo VSI's MAC filter entry element updates */
1950                         spin_lock_bh(&vsi->mac_filter_list_lock);
1951                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1952                         i40e_undo_add_filter_entries(vsi);
1953                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1954                         return -ENOMEM;
1955                 }
1956
1957                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1958                         cmd_flags = 0;
1959
1960                         /* add to delete list */
1961                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1962                         del_list[num_del].vlan_tag =
1963                                 cpu_to_le16((u16)(f->vlan ==
1964                                             I40E_VLAN_ANY ? 0 : f->vlan));
1965
1966                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1967                         del_list[num_del].flags = cmd_flags;
1968                         num_del++;
1969
1970                         /* flush a full buffer */
1971                         if (num_del == filter_list_len) {
1972                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1973                                                   vsi->seid, del_list, num_del,
1974                                                   NULL);
1975                                 aq_err = pf->hw.aq.asq_last_status;
1976                                 num_del = 0;
1977                                 memset(del_list, 0, sizeof(*del_list));
1978
1979                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1980                                         dev_err(&pf->pdev->dev,
1981                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1982                                                 i40e_stat_str(&pf->hw, ret),
1983                                                 i40e_aq_str(&pf->hw, aq_err));
1984                         }
1985                         /* Release memory for MAC filter entries which were
1986                          * synced up with HW.
1987                          */
1988                         list_del(&f->list);
1989                         kfree(f);
1990                 }
1991
1992                 if (num_del) {
1993                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1994                                                      del_list, num_del, NULL);
1995                         aq_err = pf->hw.aq.asq_last_status;
1996                         num_del = 0;
1997
1998                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1999                                 dev_info(&pf->pdev->dev,
2000                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2001                                          i40e_stat_str(&pf->hw, ret),
2002                                          i40e_aq_str(&pf->hw, aq_err));
2003                 }
2004
2005                 kfree(del_list);
2006                 del_list = NULL;
2007         }
2008
2009         if (!list_empty(&tmp_add_list)) {
2010
2011                 /* do all the adds now */
2012                 filter_list_len = pf->hw.aq.asq_buf_size /
2013                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2014                 add_list = kcalloc(filter_list_len,
2015                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2016                                GFP_KERNEL);
2017                 if (!add_list) {
2018                         /* Purge element from temporary lists */
2019                         i40e_cleanup_add_list(&tmp_add_list);
2020
2021                         /* Undo add filter entries from VSI MAC filter list */
2022                         spin_lock_bh(&vsi->mac_filter_list_lock);
2023                         i40e_undo_add_filter_entries(vsi);
2024                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2025                         return -ENOMEM;
2026                 }
2027
2028                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2029
2030                         add_happened = true;
2031                         cmd_flags = 0;
2032
2033                         /* add to add array */
2034                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2035                         add_list[num_add].vlan_tag =
2036                                 cpu_to_le16(
2037                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2038                         add_list[num_add].queue_number = 0;
2039
2040                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2041                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2042                         num_add++;
2043
2044                         /* flush a full buffer */
2045                         if (num_add == filter_list_len) {
2046                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2047                                                           add_list, num_add,
2048                                                           NULL);
2049                                 aq_err = pf->hw.aq.asq_last_status;
2050                                 num_add = 0;
2051
2052                                 if (ret)
2053                                         break;
2054                                 memset(add_list, 0, sizeof(*add_list));
2055                         }
2056                         /* Entries from tmp_add_list were cloned from MAC
2057                          * filter list, hence clean those cloned entries
2058                          */
2059                         list_del(&f->list);
2060                         kfree(f);
2061                 }
2062
2063                 if (num_add) {
2064                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2065                                                   add_list, num_add, NULL);
2066                         aq_err = pf->hw.aq.asq_last_status;
2067                         num_add = 0;
2068                 }
2069                 kfree(add_list);
2070                 add_list = NULL;
2071
2072                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
2073                         dev_info(&pf->pdev->dev,
2074                                  "add filter failed, err %s aq_err %s\n",
2075                                  i40e_stat_str(&pf->hw, ret),
2076                                  i40e_aq_str(&pf->hw, aq_err));
2077                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2078                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2079                                       &vsi->state)) {
2080                                 promisc_forced_on = true;
2081                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2082                                         &vsi->state);
2083                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2084                         }
2085                 }
2086         }
2087
2088         /* check for changes in promiscuous modes */
2089         if (changed_flags & IFF_ALLMULTI) {
2090                 bool cur_multipromisc;
2091
2092                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2093                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2094                                                             vsi->seid,
2095                                                             cur_multipromisc,
2096                                                             NULL);
2097                 if (ret)
2098                         dev_info(&pf->pdev->dev,
2099                                  "set multi promisc failed, err %s aq_err %s\n",
2100                                  i40e_stat_str(&pf->hw, ret),
2101                                  i40e_aq_str(&pf->hw,
2102                                              pf->hw.aq.asq_last_status));
2103         }
2104         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2105                 bool cur_promisc;
2106
2107                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2108                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2109                                         &vsi->state));
2110                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2111                         /* set defport ON for Main VSI instead of true promisc
2112                          * this way we will get all unicast/multicast and VLAN
2113                          * promisc behavior but will not get VF or VMDq traffic
2114                          * replicated on the Main VSI.
2115                          */
2116                         if (pf->cur_promisc != cur_promisc) {
2117                                 pf->cur_promisc = cur_promisc;
2118                                 if (grab_rtnl)
2119                                         i40e_do_reset_safe(pf,
2120                                                 BIT(__I40E_PF_RESET_REQUESTED));
2121                                 else
2122                                         i40e_do_reset(pf,
2123                                                 BIT(__I40E_PF_RESET_REQUESTED));
2124                         }
2125                 } else {
2126                         ret = i40e_aq_set_vsi_unicast_promiscuous(
2127                                                           &vsi->back->hw,
2128                                                           vsi->seid,
2129                                                           cur_promisc, NULL);
2130                         if (ret)
2131                                 dev_info(&pf->pdev->dev,
2132                                          "set unicast promisc failed, err %d, aq_err %d\n",
2133                                          ret, pf->hw.aq.asq_last_status);
2134                         ret = i40e_aq_set_vsi_multicast_promiscuous(
2135                                                           &vsi->back->hw,
2136                                                           vsi->seid,
2137                                                           cur_promisc, NULL);
2138                         if (ret)
2139                                 dev_info(&pf->pdev->dev,
2140                                          "set multicast promisc failed, err %d, aq_err %d\n",
2141                                          ret, pf->hw.aq.asq_last_status);
2142                 }
2143                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2144                                                 vsi->seid,
2145                                                 cur_promisc, NULL);
2146                 if (ret)
2147                         dev_info(&pf->pdev->dev,
2148                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2149                                  i40e_stat_str(&pf->hw, ret),
2150                                  i40e_aq_str(&pf->hw,
2151                                              pf->hw.aq.asq_last_status));
2152         }
2153
2154         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2155         return 0;
2156 }
2157
2158 /**
2159  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2160  * @pf: board private structure
2161  **/
2162 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2163 {
2164         int v;
2165
2166         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2167                 return;
2168         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2169
2170         for (v = 0; v < pf->num_alloc_vsi; v++) {
2171                 if (pf->vsi[v] &&
2172                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2173                         i40e_sync_vsi_filters(pf->vsi[v], true);
2174         }
2175 }
2176
2177 /**
2178  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2179  * @netdev: network interface device structure
2180  * @new_mtu: new value for maximum frame size
2181  *
2182  * Returns 0 on success, negative on failure
2183  **/
2184 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2185 {
2186         struct i40e_netdev_priv *np = netdev_priv(netdev);
2187         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2188         struct i40e_vsi *vsi = np->vsi;
2189
2190         /* MTU < 68 is an error and causes problems on some kernels */
2191         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2192                 return -EINVAL;
2193
2194         netdev_info(netdev, "changing MTU from %d to %d\n",
2195                     netdev->mtu, new_mtu);
2196         netdev->mtu = new_mtu;
2197         if (netif_running(netdev))
2198                 i40e_vsi_reinit_locked(vsi);
2199
2200         return 0;
2201 }
2202
2203 /**
2204  * i40e_ioctl - Access the hwtstamp interface
2205  * @netdev: network interface device structure
2206  * @ifr: interface request data
2207  * @cmd: ioctl command
2208  **/
2209 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2210 {
2211         struct i40e_netdev_priv *np = netdev_priv(netdev);
2212         struct i40e_pf *pf = np->vsi->back;
2213
2214         switch (cmd) {
2215         case SIOCGHWTSTAMP:
2216                 return i40e_ptp_get_ts_config(pf, ifr);
2217         case SIOCSHWTSTAMP:
2218                 return i40e_ptp_set_ts_config(pf, ifr);
2219         default:
2220                 return -EOPNOTSUPP;
2221         }
2222 }
2223
2224 /**
2225  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2226  * @vsi: the vsi being adjusted
2227  **/
2228 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2229 {
2230         struct i40e_vsi_context ctxt;
2231         i40e_status ret;
2232
2233         if ((vsi->info.valid_sections &
2234              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2235             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2236                 return;  /* already enabled */
2237
2238         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2239         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2240                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2241
2242         ctxt.seid = vsi->seid;
2243         ctxt.info = vsi->info;
2244         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2245         if (ret) {
2246                 dev_info(&vsi->back->pdev->dev,
2247                          "update vlan stripping failed, err %s aq_err %s\n",
2248                          i40e_stat_str(&vsi->back->hw, ret),
2249                          i40e_aq_str(&vsi->back->hw,
2250                                      vsi->back->hw.aq.asq_last_status));
2251         }
2252 }
2253
2254 /**
2255  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2256  * @vsi: the vsi being adjusted
2257  **/
2258 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2259 {
2260         struct i40e_vsi_context ctxt;
2261         i40e_status ret;
2262
2263         if ((vsi->info.valid_sections &
2264              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2265             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2266              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2267                 return;  /* already disabled */
2268
2269         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2270         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2271                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2272
2273         ctxt.seid = vsi->seid;
2274         ctxt.info = vsi->info;
2275         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2276         if (ret) {
2277                 dev_info(&vsi->back->pdev->dev,
2278                          "update vlan stripping failed, err %s aq_err %s\n",
2279                          i40e_stat_str(&vsi->back->hw, ret),
2280                          i40e_aq_str(&vsi->back->hw,
2281                                      vsi->back->hw.aq.asq_last_status));
2282         }
2283 }
2284
2285 /**
2286  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2287  * @netdev: network interface to be adjusted
2288  * @features: netdev features to test if VLAN offload is enabled or not
2289  **/
2290 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2291 {
2292         struct i40e_netdev_priv *np = netdev_priv(netdev);
2293         struct i40e_vsi *vsi = np->vsi;
2294
2295         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2296                 i40e_vlan_stripping_enable(vsi);
2297         else
2298                 i40e_vlan_stripping_disable(vsi);
2299 }
2300
2301 /**
2302  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2303  * @vsi: the vsi being configured
2304  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2305  **/
2306 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2307 {
2308         struct i40e_mac_filter *f, *add_f;
2309         bool is_netdev, is_vf;
2310
2311         is_vf = (vsi->type == I40E_VSI_SRIOV);
2312         is_netdev = !!(vsi->netdev);
2313
2314         /* Locked once because all functions invoked below iterates list*/
2315         spin_lock_bh(&vsi->mac_filter_list_lock);
2316
2317         if (is_netdev) {
2318                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2319                                         is_vf, is_netdev);
2320                 if (!add_f) {
2321                         dev_info(&vsi->back->pdev->dev,
2322                                  "Could not add vlan filter %d for %pM\n",
2323                                  vid, vsi->netdev->dev_addr);
2324                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2325                         return -ENOMEM;
2326                 }
2327         }
2328
2329         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2330                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2331                 if (!add_f) {
2332                         dev_info(&vsi->back->pdev->dev,
2333                                  "Could not add vlan filter %d for %pM\n",
2334                                  vid, f->macaddr);
2335                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2336                         return -ENOMEM;
2337                 }
2338         }
2339
2340         /* Now if we add a vlan tag, make sure to check if it is the first
2341          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2342          * with 0, so we now accept untagged and specified tagged traffic
2343          * (and not any taged and untagged)
2344          */
2345         if (vid > 0) {
2346                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2347                                                   I40E_VLAN_ANY,
2348                                                   is_vf, is_netdev)) {
2349                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2350                                         I40E_VLAN_ANY, is_vf, is_netdev);
2351                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2352                                                 is_vf, is_netdev);
2353                         if (!add_f) {
2354                                 dev_info(&vsi->back->pdev->dev,
2355                                          "Could not add filter 0 for %pM\n",
2356                                          vsi->netdev->dev_addr);
2357                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2358                                 return -ENOMEM;
2359                         }
2360                 }
2361         }
2362
2363         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2364         if (vid > 0 && !vsi->info.pvid) {
2365                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2366                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2367                                               is_vf, is_netdev))
2368                                 continue;
2369                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2370                                         is_vf, is_netdev);
2371                         add_f = i40e_add_filter(vsi, f->macaddr,
2372                                                 0, is_vf, is_netdev);
2373                         if (!add_f) {
2374                                 dev_info(&vsi->back->pdev->dev,
2375                                          "Could not add filter 0 for %pM\n",
2376                                         f->macaddr);
2377                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2378                                 return -ENOMEM;
2379                         }
2380                 }
2381         }
2382
2383         /* Make sure to release before sync_vsi_filter because that
2384          * function will lock/unlock as necessary
2385          */
2386         spin_unlock_bh(&vsi->mac_filter_list_lock);
2387
2388         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2389             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2390                 return 0;
2391
2392         return i40e_sync_vsi_filters(vsi, false);
2393 }
2394
2395 /**
2396  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2397  * @vsi: the vsi being configured
2398  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2399  *
2400  * Return: 0 on success or negative otherwise
2401  **/
2402 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2403 {
2404         struct net_device *netdev = vsi->netdev;
2405         struct i40e_mac_filter *f, *add_f;
2406         bool is_vf, is_netdev;
2407         int filter_count = 0;
2408
2409         is_vf = (vsi->type == I40E_VSI_SRIOV);
2410         is_netdev = !!(netdev);
2411
2412         /* Locked once because all functions invoked below iterates list */
2413         spin_lock_bh(&vsi->mac_filter_list_lock);
2414
2415         if (is_netdev)
2416                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2417
2418         list_for_each_entry(f, &vsi->mac_filter_list, list)
2419                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2420
2421         /* go through all the filters for this VSI and if there is only
2422          * vid == 0 it means there are no other filters, so vid 0 must
2423          * be replaced with -1. This signifies that we should from now
2424          * on accept any traffic (with any tag present, or untagged)
2425          */
2426         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2427                 if (is_netdev) {
2428                         if (f->vlan &&
2429                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2430                                 filter_count++;
2431                 }
2432
2433                 if (f->vlan)
2434                         filter_count++;
2435         }
2436
2437         if (!filter_count && is_netdev) {
2438                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2439                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2440                                     is_vf, is_netdev);
2441                 if (!f) {
2442                         dev_info(&vsi->back->pdev->dev,
2443                                  "Could not add filter %d for %pM\n",
2444                                  I40E_VLAN_ANY, netdev->dev_addr);
2445                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2446                         return -ENOMEM;
2447                 }
2448         }
2449
2450         if (!filter_count) {
2451                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2452                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2453                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2454                                                 is_vf, is_netdev);
2455                         if (!add_f) {
2456                                 dev_info(&vsi->back->pdev->dev,
2457                                          "Could not add filter %d for %pM\n",
2458                                          I40E_VLAN_ANY, f->macaddr);
2459                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2460                                 return -ENOMEM;
2461                         }
2462                 }
2463         }
2464
2465         /* Make sure to release before sync_vsi_filter because that
2466          * function with lock/unlock as necessary
2467          */
2468         spin_unlock_bh(&vsi->mac_filter_list_lock);
2469
2470         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2471             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2472                 return 0;
2473
2474         return i40e_sync_vsi_filters(vsi, false);
2475 }
2476
2477 /**
2478  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2479  * @netdev: network interface to be adjusted
2480  * @vid: vlan id to be added
2481  *
2482  * net_device_ops implementation for adding vlan ids
2483  **/
2484 #ifdef I40E_FCOE
2485 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2486                          __always_unused __be16 proto, u16 vid)
2487 #else
2488 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2489                                 __always_unused __be16 proto, u16 vid)
2490 #endif
2491 {
2492         struct i40e_netdev_priv *np = netdev_priv(netdev);
2493         struct i40e_vsi *vsi = np->vsi;
2494         int ret = 0;
2495
2496         if (vid > 4095)
2497                 return -EINVAL;
2498
2499         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2500
2501         /* If the network stack called us with vid = 0 then
2502          * it is asking to receive priority tagged packets with
2503          * vlan id 0.  Our HW receives them by default when configured
2504          * to receive untagged packets so there is no need to add an
2505          * extra filter for vlan 0 tagged packets.
2506          */
2507         if (vid)
2508                 ret = i40e_vsi_add_vlan(vsi, vid);
2509
2510         if (!ret && (vid < VLAN_N_VID))
2511                 set_bit(vid, vsi->active_vlans);
2512
2513         return ret;
2514 }
2515
2516 /**
2517  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2518  * @netdev: network interface to be adjusted
2519  * @vid: vlan id to be removed
2520  *
2521  * net_device_ops implementation for removing vlan ids
2522  **/
2523 #ifdef I40E_FCOE
2524 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2525                           __always_unused __be16 proto, u16 vid)
2526 #else
2527 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2528                                  __always_unused __be16 proto, u16 vid)
2529 #endif
2530 {
2531         struct i40e_netdev_priv *np = netdev_priv(netdev);
2532         struct i40e_vsi *vsi = np->vsi;
2533
2534         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2535
2536         /* return code is ignored as there is nothing a user
2537          * can do about failure to remove and a log message was
2538          * already printed from the other function
2539          */
2540         i40e_vsi_kill_vlan(vsi, vid);
2541
2542         clear_bit(vid, vsi->active_vlans);
2543
2544         return 0;
2545 }
2546
2547 /**
2548  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2549  * @vsi: the vsi being brought back up
2550  **/
2551 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2552 {
2553         u16 vid;
2554
2555         if (!vsi->netdev)
2556                 return;
2557
2558         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2559
2560         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2561                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2562                                      vid);
2563 }
2564
2565 /**
2566  * i40e_vsi_add_pvid - Add pvid for the VSI
2567  * @vsi: the vsi being adjusted
2568  * @vid: the vlan id to set as a PVID
2569  **/
2570 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2571 {
2572         struct i40e_vsi_context ctxt;
2573         i40e_status ret;
2574
2575         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2576         vsi->info.pvid = cpu_to_le16(vid);
2577         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2578                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2579                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2580
2581         ctxt.seid = vsi->seid;
2582         ctxt.info = vsi->info;
2583         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2584         if (ret) {
2585                 dev_info(&vsi->back->pdev->dev,
2586                          "add pvid failed, err %s aq_err %s\n",
2587                          i40e_stat_str(&vsi->back->hw, ret),
2588                          i40e_aq_str(&vsi->back->hw,
2589                                      vsi->back->hw.aq.asq_last_status));
2590                 return -ENOENT;
2591         }
2592
2593         return 0;
2594 }
2595
2596 /**
2597  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2598  * @vsi: the vsi being adjusted
2599  *
2600  * Just use the vlan_rx_register() service to put it back to normal
2601  **/
2602 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2603 {
2604         i40e_vlan_stripping_disable(vsi);
2605
2606         vsi->info.pvid = 0;
2607 }
2608
2609 /**
2610  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2611  * @vsi: ptr to the VSI
2612  *
2613  * If this function returns with an error, then it's possible one or
2614  * more of the rings is populated (while the rest are not).  It is the
2615  * callers duty to clean those orphaned rings.
2616  *
2617  * Return 0 on success, negative on failure
2618  **/
2619 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2620 {
2621         int i, err = 0;
2622
2623         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2624                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2625
2626         return err;
2627 }
2628
2629 /**
2630  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2631  * @vsi: ptr to the VSI
2632  *
2633  * Free VSI's transmit software resources
2634  **/
2635 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2636 {
2637         int i;
2638
2639         if (!vsi->tx_rings)
2640                 return;
2641
2642         for (i = 0; i < vsi->num_queue_pairs; i++)
2643                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2644                         i40e_free_tx_resources(vsi->tx_rings[i]);
2645 }
2646
2647 /**
2648  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2649  * @vsi: ptr to the VSI
2650  *
2651  * If this function returns with an error, then it's possible one or
2652  * more of the rings is populated (while the rest are not).  It is the
2653  * callers duty to clean those orphaned rings.
2654  *
2655  * Return 0 on success, negative on failure
2656  **/
2657 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2658 {
2659         int i, err = 0;
2660
2661         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2662                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2663 #ifdef I40E_FCOE
2664         i40e_fcoe_setup_ddp_resources(vsi);
2665 #endif
2666         return err;
2667 }
2668
2669 /**
2670  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2671  * @vsi: ptr to the VSI
2672  *
2673  * Free all receive software resources
2674  **/
2675 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2676 {
2677         int i;
2678
2679         if (!vsi->rx_rings)
2680                 return;
2681
2682         for (i = 0; i < vsi->num_queue_pairs; i++)
2683                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2684                         i40e_free_rx_resources(vsi->rx_rings[i]);
2685 #ifdef I40E_FCOE
2686         i40e_fcoe_free_ddp_resources(vsi);
2687 #endif
2688 }
2689
2690 /**
2691  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2692  * @ring: The Tx ring to configure
2693  *
2694  * This enables/disables XPS for a given Tx descriptor ring
2695  * based on the TCs enabled for the VSI that ring belongs to.
2696  **/
2697 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2698 {
2699         struct i40e_vsi *vsi = ring->vsi;
2700         cpumask_var_t mask;
2701
2702         if (!ring->q_vector || !ring->netdev)
2703                 return;
2704
2705         /* Single TC mode enable XPS */
2706         if (vsi->tc_config.numtc <= 1) {
2707                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2708                         netif_set_xps_queue(ring->netdev,
2709                                             &ring->q_vector->affinity_mask,
2710                                             ring->queue_index);
2711         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2712                 /* Disable XPS to allow selection based on TC */
2713                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2714                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2715                 free_cpumask_var(mask);
2716         }
2717 }
2718
2719 /**
2720  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2721  * @ring: The Tx ring to configure
2722  *
2723  * Configure the Tx descriptor ring in the HMC context.
2724  **/
2725 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2726 {
2727         struct i40e_vsi *vsi = ring->vsi;
2728         u16 pf_q = vsi->base_queue + ring->queue_index;
2729         struct i40e_hw *hw = &vsi->back->hw;
2730         struct i40e_hmc_obj_txq tx_ctx;
2731         i40e_status err = 0;
2732         u32 qtx_ctl = 0;
2733
2734         /* some ATR related tx ring init */
2735         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2736                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2737                 ring->atr_count = 0;
2738         } else {
2739                 ring->atr_sample_rate = 0;
2740         }
2741
2742         /* configure XPS */
2743         i40e_config_xps_tx_ring(ring);
2744
2745         /* clear the context structure first */
2746         memset(&tx_ctx, 0, sizeof(tx_ctx));
2747
2748         tx_ctx.new_context = 1;
2749         tx_ctx.base = (ring->dma / 128);
2750         tx_ctx.qlen = ring->count;
2751         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2752                                                I40E_FLAG_FD_ATR_ENABLED));
2753 #ifdef I40E_FCOE
2754         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2755 #endif
2756         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2757         /* FDIR VSI tx ring can still use RS bit and writebacks */
2758         if (vsi->type != I40E_VSI_FDIR)
2759                 tx_ctx.head_wb_ena = 1;
2760         tx_ctx.head_wb_addr = ring->dma +
2761                               (ring->count * sizeof(struct i40e_tx_desc));
2762
2763         /* As part of VSI creation/update, FW allocates certain
2764          * Tx arbitration queue sets for each TC enabled for
2765          * the VSI. The FW returns the handles to these queue
2766          * sets as part of the response buffer to Add VSI,
2767          * Update VSI, etc. AQ commands. It is expected that
2768          * these queue set handles be associated with the Tx
2769          * queues by the driver as part of the TX queue context
2770          * initialization. This has to be done regardless of
2771          * DCB as by default everything is mapped to TC0.
2772          */
2773         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2774         tx_ctx.rdylist_act = 0;
2775
2776         /* clear the context in the HMC */
2777         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2778         if (err) {
2779                 dev_info(&vsi->back->pdev->dev,
2780                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2781                          ring->queue_index, pf_q, err);
2782                 return -ENOMEM;
2783         }
2784
2785         /* set the context in the HMC */
2786         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2787         if (err) {
2788                 dev_info(&vsi->back->pdev->dev,
2789                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2790                          ring->queue_index, pf_q, err);
2791                 return -ENOMEM;
2792         }
2793
2794         /* Now associate this queue with this PCI function */
2795         if (vsi->type == I40E_VSI_VMDQ2) {
2796                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2797                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2798                            I40E_QTX_CTL_VFVM_INDX_MASK;
2799         } else {
2800                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2801         }
2802
2803         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2804                     I40E_QTX_CTL_PF_INDX_MASK);
2805         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2806         i40e_flush(hw);
2807
2808         /* cache tail off for easier writes later */
2809         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2810
2811         return 0;
2812 }
2813
2814 /**
2815  * i40e_configure_rx_ring - Configure a receive ring context
2816  * @ring: The Rx ring to configure
2817  *
2818  * Configure the Rx descriptor ring in the HMC context.
2819  **/
2820 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2821 {
2822         struct i40e_vsi *vsi = ring->vsi;
2823         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2824         u16 pf_q = vsi->base_queue + ring->queue_index;
2825         struct i40e_hw *hw = &vsi->back->hw;
2826         struct i40e_hmc_obj_rxq rx_ctx;
2827         i40e_status err = 0;
2828
2829         ring->state = 0;
2830
2831         /* clear the context structure first */
2832         memset(&rx_ctx, 0, sizeof(rx_ctx));
2833
2834         ring->rx_buf_len = vsi->rx_buf_len;
2835         ring->rx_hdr_len = vsi->rx_hdr_len;
2836
2837         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2838         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2839
2840         rx_ctx.base = (ring->dma / 128);
2841         rx_ctx.qlen = ring->count;
2842
2843         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2844                 set_ring_16byte_desc_enabled(ring);
2845                 rx_ctx.dsize = 0;
2846         } else {
2847                 rx_ctx.dsize = 1;
2848         }
2849
2850         rx_ctx.dtype = vsi->dtype;
2851         if (vsi->dtype) {
2852                 set_ring_ps_enabled(ring);
2853                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2854                                   I40E_RX_SPLIT_IP      |
2855                                   I40E_RX_SPLIT_TCP_UDP |
2856                                   I40E_RX_SPLIT_SCTP;
2857         } else {
2858                 rx_ctx.hsplit_0 = 0;
2859         }
2860
2861         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2862                                   (chain_len * ring->rx_buf_len));
2863         if (hw->revision_id == 0)
2864                 rx_ctx.lrxqthresh = 0;
2865         else
2866                 rx_ctx.lrxqthresh = 2;
2867         rx_ctx.crcstrip = 1;
2868         rx_ctx.l2tsel = 1;
2869         /* this controls whether VLAN is stripped from inner headers */
2870         rx_ctx.showiv = 0;
2871 #ifdef I40E_FCOE
2872         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2873 #endif
2874         /* set the prefena field to 1 because the manual says to */
2875         rx_ctx.prefena = 1;
2876
2877         /* clear the context in the HMC */
2878         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2879         if (err) {
2880                 dev_info(&vsi->back->pdev->dev,
2881                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2882                          ring->queue_index, pf_q, err);
2883                 return -ENOMEM;
2884         }
2885
2886         /* set the context in the HMC */
2887         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2888         if (err) {
2889                 dev_info(&vsi->back->pdev->dev,
2890                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2891                          ring->queue_index, pf_q, err);
2892                 return -ENOMEM;
2893         }
2894
2895         /* cache tail for quicker writes, and clear the reg before use */
2896         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2897         writel(0, ring->tail);
2898
2899         if (ring_is_ps_enabled(ring)) {
2900                 i40e_alloc_rx_headers(ring);
2901                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2902         } else {
2903                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2904         }
2905
2906         return 0;
2907 }
2908
2909 /**
2910  * i40e_vsi_configure_tx - Configure the VSI for Tx
2911  * @vsi: VSI structure describing this set of rings and resources
2912  *
2913  * Configure the Tx VSI for operation.
2914  **/
2915 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2916 {
2917         int err = 0;
2918         u16 i;
2919
2920         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2921                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2922
2923         return err;
2924 }
2925
2926 /**
2927  * i40e_vsi_configure_rx - Configure the VSI for Rx
2928  * @vsi: the VSI being configured
2929  *
2930  * Configure the Rx VSI for operation.
2931  **/
2932 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2933 {
2934         int err = 0;
2935         u16 i;
2936
2937         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2938                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2939                                + ETH_FCS_LEN + VLAN_HLEN;
2940         else
2941                 vsi->max_frame = I40E_RXBUFFER_2048;
2942
2943         /* figure out correct receive buffer length */
2944         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2945                                     I40E_FLAG_RX_PS_ENABLED)) {
2946         case I40E_FLAG_RX_1BUF_ENABLED:
2947                 vsi->rx_hdr_len = 0;
2948                 vsi->rx_buf_len = vsi->max_frame;
2949                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2950                 break;
2951         case I40E_FLAG_RX_PS_ENABLED:
2952                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2953                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2954                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2955                 break;
2956         default:
2957                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2958                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2959                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2960                 break;
2961         }
2962
2963 #ifdef I40E_FCOE
2964         /* setup rx buffer for FCoE */
2965         if ((vsi->type == I40E_VSI_FCOE) &&
2966             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2967                 vsi->rx_hdr_len = 0;
2968                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2969                 vsi->max_frame = I40E_RXBUFFER_3072;
2970                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2971         }
2972
2973 #endif /* I40E_FCOE */
2974         /* round up for the chip's needs */
2975         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2976                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2977         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2978                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2979
2980         /* set up individual rings */
2981         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2982                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2983
2984         return err;
2985 }
2986
2987 /**
2988  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2989  * @vsi: ptr to the VSI
2990  **/
2991 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2992 {
2993         struct i40e_ring *tx_ring, *rx_ring;
2994         u16 qoffset, qcount;
2995         int i, n;
2996
2997         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2998                 /* Reset the TC information */
2999                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3000                         rx_ring = vsi->rx_rings[i];
3001                         tx_ring = vsi->tx_rings[i];
3002                         rx_ring->dcb_tc = 0;
3003                         tx_ring->dcb_tc = 0;
3004                 }
3005         }
3006
3007         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3008                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3009                         continue;
3010
3011                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3012                 qcount = vsi->tc_config.tc_info[n].qcount;
3013                 for (i = qoffset; i < (qoffset + qcount); i++) {
3014                         rx_ring = vsi->rx_rings[i];
3015                         tx_ring = vsi->tx_rings[i];
3016                         rx_ring->dcb_tc = n;
3017                         tx_ring->dcb_tc = n;
3018                 }
3019         }
3020 }
3021
3022 /**
3023  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3024  * @vsi: ptr to the VSI
3025  **/
3026 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3027 {
3028         if (vsi->netdev)
3029                 i40e_set_rx_mode(vsi->netdev);
3030 }
3031
3032 /**
3033  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3034  * @vsi: Pointer to the targeted VSI
3035  *
3036  * This function replays the hlist on the hw where all the SB Flow Director
3037  * filters were saved.
3038  **/
3039 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3040 {
3041         struct i40e_fdir_filter *filter;
3042         struct i40e_pf *pf = vsi->back;
3043         struct hlist_node *node;
3044
3045         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3046                 return;
3047
3048         hlist_for_each_entry_safe(filter, node,
3049                                   &pf->fdir_filter_list, fdir_node) {
3050                 i40e_add_del_fdir(vsi, filter, true);
3051         }
3052 }
3053
3054 /**
3055  * i40e_vsi_configure - Set up the VSI for action
3056  * @vsi: the VSI being configured
3057  **/
3058 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3059 {
3060         int err;
3061
3062         i40e_set_vsi_rx_mode(vsi);
3063         i40e_restore_vlan(vsi);
3064         i40e_vsi_config_dcb_rings(vsi);
3065         err = i40e_vsi_configure_tx(vsi);
3066         if (!err)
3067                 err = i40e_vsi_configure_rx(vsi);
3068
3069         return err;
3070 }
3071
3072 /**
3073  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3074  * @vsi: the VSI being configured
3075  **/
3076 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3077 {
3078         struct i40e_pf *pf = vsi->back;
3079         struct i40e_hw *hw = &pf->hw;
3080         u16 vector;
3081         int i, q;
3082         u32 qp;
3083
3084         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3085          * and PFINT_LNKLSTn registers, e.g.:
3086          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3087          */
3088         qp = vsi->base_queue;
3089         vector = vsi->base_vector;
3090         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3091                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3092
3093                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3094                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3095                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3096                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3097                      q_vector->rx.itr);
3098                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3099                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3100                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3101                      q_vector->tx.itr);
3102                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3103                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3104
3105                 /* Linked list for the queuepairs assigned to this vector */
3106                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3107                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3108                         u32 val;
3109
3110                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3111                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3112                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3113                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3114                               (I40E_QUEUE_TYPE_TX
3115                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3116
3117                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3118
3119                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3120                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3121                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3122                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3123                               (I40E_QUEUE_TYPE_RX
3124                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3125
3126                         /* Terminate the linked list */
3127                         if (q == (q_vector->num_ringpairs - 1))
3128                                 val |= (I40E_QUEUE_END_OF_LIST
3129                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3130
3131                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3132                         qp++;
3133                 }
3134         }
3135
3136         i40e_flush(hw);
3137 }
3138
3139 /**
3140  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3141  * @hw: ptr to the hardware info
3142  **/
3143 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3144 {
3145         struct i40e_hw *hw = &pf->hw;
3146         u32 val;
3147
3148         /* clear things first */
3149         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3150         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3151
3152         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3153               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3154               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3155               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3156               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3157               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3158               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3159               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3160
3161         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3162                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3163
3164         if (pf->flags & I40E_FLAG_PTP)
3165                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3166
3167         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3168
3169         /* SW_ITR_IDX = 0, but don't change INTENA */
3170         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3171                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3172
3173         /* OTHER_ITR_IDX = 0 */
3174         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3175 }
3176
3177 /**
3178  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3179  * @vsi: the VSI being configured
3180  **/
3181 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3182 {
3183         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3184         struct i40e_pf *pf = vsi->back;
3185         struct i40e_hw *hw = &pf->hw;
3186         u32 val;
3187
3188         /* set the ITR configuration */
3189         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3190         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3191         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3192         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3193         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3194         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3195         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3196
3197         i40e_enable_misc_int_causes(pf);
3198
3199         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3200         wr32(hw, I40E_PFINT_LNKLST0, 0);
3201
3202         /* Associate the queue pair to the vector and enable the queue int */
3203         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3204               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3205               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3206
3207         wr32(hw, I40E_QINT_RQCTL(0), val);
3208
3209         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3210               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3211               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3212
3213         wr32(hw, I40E_QINT_TQCTL(0), val);
3214         i40e_flush(hw);
3215 }
3216
3217 /**
3218  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3219  * @pf: board private structure
3220  **/
3221 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3222 {
3223         struct i40e_hw *hw = &pf->hw;
3224
3225         wr32(hw, I40E_PFINT_DYN_CTL0,
3226              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3227         i40e_flush(hw);
3228 }
3229
3230 /**
3231  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3232  * @pf: board private structure
3233  **/
3234 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3235 {
3236         struct i40e_hw *hw = &pf->hw;
3237         u32 val;
3238
3239         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3240               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3241               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3242
3243         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3244         i40e_flush(hw);
3245 }
3246
3247 /**
3248  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3249  * @vsi: pointer to a vsi
3250  * @vector: disable a particular Hw Interrupt vector
3251  **/
3252 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3253 {
3254         struct i40e_pf *pf = vsi->back;
3255         struct i40e_hw *hw = &pf->hw;
3256         u32 val;
3257
3258         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3259         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3260         i40e_flush(hw);
3261 }
3262
3263 /**
3264  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3265  * @irq: interrupt number
3266  * @data: pointer to a q_vector
3267  **/
3268 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3269 {
3270         struct i40e_q_vector *q_vector = data;
3271
3272         if (!q_vector->tx.ring && !q_vector->rx.ring)
3273                 return IRQ_HANDLED;
3274
3275         napi_schedule_irqoff(&q_vector->napi);
3276
3277         return IRQ_HANDLED;
3278 }
3279
3280 /**
3281  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3282  * @vsi: the VSI being configured
3283  * @basename: name for the vector
3284  *
3285  * Allocates MSI-X vectors and requests interrupts from the kernel.
3286  **/
3287 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3288 {
3289         int q_vectors = vsi->num_q_vectors;
3290         struct i40e_pf *pf = vsi->back;
3291         int base = vsi->base_vector;
3292         int rx_int_idx = 0;
3293         int tx_int_idx = 0;
3294         int vector, err;
3295
3296         for (vector = 0; vector < q_vectors; vector++) {
3297                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3298
3299                 if (q_vector->tx.ring && q_vector->rx.ring) {
3300                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3301                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3302                         tx_int_idx++;
3303                 } else if (q_vector->rx.ring) {
3304                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3305                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3306                 } else if (q_vector->tx.ring) {
3307                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3308                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3309                 } else {
3310                         /* skip this unused q_vector */
3311                         continue;
3312                 }
3313                 err = request_irq(pf->msix_entries[base + vector].vector,
3314                                   vsi->irq_handler,
3315                                   0,
3316                                   q_vector->name,
3317                                   q_vector);
3318                 if (err) {
3319                         dev_info(&pf->pdev->dev,
3320                                  "MSIX request_irq failed, error: %d\n", err);
3321                         goto free_queue_irqs;
3322                 }
3323                 /* assign the mask for this irq */
3324                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3325                                       &q_vector->affinity_mask);
3326         }
3327
3328         vsi->irqs_ready = true;
3329         return 0;
3330
3331 free_queue_irqs:
3332         while (vector) {
3333                 vector--;
3334                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3335                                       NULL);
3336                 free_irq(pf->msix_entries[base + vector].vector,
3337                          &(vsi->q_vectors[vector]));
3338         }
3339         return err;
3340 }
3341
3342 /**
3343  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3344  * @vsi: the VSI being un-configured
3345  **/
3346 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3347 {
3348         struct i40e_pf *pf = vsi->back;
3349         struct i40e_hw *hw = &pf->hw;
3350         int base = vsi->base_vector;
3351         int i;
3352
3353         for (i = 0; i < vsi->num_queue_pairs; i++) {
3354                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3355                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3356         }
3357
3358         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3359                 for (i = vsi->base_vector;
3360                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3361                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3362
3363                 i40e_flush(hw);
3364                 for (i = 0; i < vsi->num_q_vectors; i++)
3365                         synchronize_irq(pf->msix_entries[i + base].vector);
3366         } else {
3367                 /* Legacy and MSI mode - this stops all interrupt handling */
3368                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3369                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3370                 i40e_flush(hw);
3371                 synchronize_irq(pf->pdev->irq);
3372         }
3373 }
3374
3375 /**
3376  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3377  * @vsi: the VSI being configured
3378  **/
3379 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3380 {
3381         struct i40e_pf *pf = vsi->back;
3382         int i;
3383
3384         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3385                 for (i = 0; i < vsi->num_q_vectors; i++)
3386                         i40e_irq_dynamic_enable(vsi, i);
3387         } else {
3388                 i40e_irq_dynamic_enable_icr0(pf);
3389         }
3390
3391         i40e_flush(&pf->hw);
3392         return 0;
3393 }
3394
3395 /**
3396  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3397  * @pf: board private structure
3398  **/
3399 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3400 {
3401         /* Disable ICR 0 */
3402         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3403         i40e_flush(&pf->hw);
3404 }
3405
3406 /**
3407  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3408  * @irq: interrupt number
3409  * @data: pointer to a q_vector
3410  *
3411  * This is the handler used for all MSI/Legacy interrupts, and deals
3412  * with both queue and non-queue interrupts.  This is also used in
3413  * MSIX mode to handle the non-queue interrupts.
3414  **/
3415 static irqreturn_t i40e_intr(int irq, void *data)
3416 {
3417         struct i40e_pf *pf = (struct i40e_pf *)data;
3418         struct i40e_hw *hw = &pf->hw;
3419         irqreturn_t ret = IRQ_NONE;
3420         u32 icr0, icr0_remaining;
3421         u32 val, ena_mask;
3422
3423         icr0 = rd32(hw, I40E_PFINT_ICR0);
3424         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3425
3426         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3427         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3428                 goto enable_intr;
3429
3430         /* if interrupt but no bits showing, must be SWINT */
3431         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3432             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3433                 pf->sw_int_count++;
3434
3435         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3436             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3437                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3438                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3439                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3440         }
3441
3442         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3443         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3444                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3445                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3446
3447                 /* temporarily disable queue cause for NAPI processing */
3448                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3449
3450                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3451                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3452
3453                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3454                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3455                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3456
3457                 if (!test_bit(__I40E_DOWN, &pf->state))
3458                         napi_schedule_irqoff(&q_vector->napi);
3459         }
3460
3461         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3462                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3463                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3464         }
3465
3466         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3467                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3468                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3469         }
3470
3471         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3472                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3473                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3474         }
3475
3476         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3477                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3478                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3479                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3480                 val = rd32(hw, I40E_GLGEN_RSTAT);
3481                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3482                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3483                 if (val == I40E_RESET_CORER) {
3484                         pf->corer_count++;
3485                 } else if (val == I40E_RESET_GLOBR) {
3486                         pf->globr_count++;
3487                 } else if (val == I40E_RESET_EMPR) {
3488                         pf->empr_count++;
3489                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3490                 }
3491         }
3492
3493         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3494                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3495                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3496                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3497                          rd32(hw, I40E_PFHMC_ERRORINFO),
3498                          rd32(hw, I40E_PFHMC_ERRORDATA));
3499         }
3500
3501         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3502                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3503
3504                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3505                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3506                         i40e_ptp_tx_hwtstamp(pf);
3507                 }
3508         }
3509
3510         /* If a critical error is pending we have no choice but to reset the
3511          * device.
3512          * Report and mask out any remaining unexpected interrupts.
3513          */
3514         icr0_remaining = icr0 & ena_mask;
3515         if (icr0_remaining) {
3516                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3517                          icr0_remaining);
3518                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3519                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3520                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3521                         dev_info(&pf->pdev->dev, "device will be reset\n");
3522                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3523                         i40e_service_event_schedule(pf);
3524                 }
3525                 ena_mask &= ~icr0_remaining;
3526         }
3527         ret = IRQ_HANDLED;
3528
3529 enable_intr:
3530         /* re-enable interrupt causes */
3531         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3532         if (!test_bit(__I40E_DOWN, &pf->state)) {
3533                 i40e_service_event_schedule(pf);
3534                 i40e_irq_dynamic_enable_icr0(pf);
3535         }
3536
3537         return ret;
3538 }
3539
3540 /**
3541  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3542  * @tx_ring:  tx ring to clean
3543  * @budget:   how many cleans we're allowed
3544  *
3545  * Returns true if there's any budget left (e.g. the clean is finished)
3546  **/
3547 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3548 {
3549         struct i40e_vsi *vsi = tx_ring->vsi;
3550         u16 i = tx_ring->next_to_clean;
3551         struct i40e_tx_buffer *tx_buf;
3552         struct i40e_tx_desc *tx_desc;
3553
3554         tx_buf = &tx_ring->tx_bi[i];
3555         tx_desc = I40E_TX_DESC(tx_ring, i);
3556         i -= tx_ring->count;
3557
3558         do {
3559                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3560
3561                 /* if next_to_watch is not set then there is no work pending */
3562                 if (!eop_desc)
3563                         break;
3564
3565                 /* prevent any other reads prior to eop_desc */
3566                 read_barrier_depends();
3567
3568                 /* if the descriptor isn't done, no work yet to do */
3569                 if (!(eop_desc->cmd_type_offset_bsz &
3570                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3571                         break;
3572
3573                 /* clear next_to_watch to prevent false hangs */
3574                 tx_buf->next_to_watch = NULL;
3575
3576                 tx_desc->buffer_addr = 0;
3577                 tx_desc->cmd_type_offset_bsz = 0;
3578                 /* move past filter desc */
3579                 tx_buf++;
3580                 tx_desc++;
3581                 i++;
3582                 if (unlikely(!i)) {
3583                         i -= tx_ring->count;
3584                         tx_buf = tx_ring->tx_bi;
3585                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3586                 }
3587                 /* unmap skb header data */
3588                 dma_unmap_single(tx_ring->dev,
3589                                  dma_unmap_addr(tx_buf, dma),
3590                                  dma_unmap_len(tx_buf, len),
3591                                  DMA_TO_DEVICE);
3592                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3593                         kfree(tx_buf->raw_buf);
3594
3595                 tx_buf->raw_buf = NULL;
3596                 tx_buf->tx_flags = 0;
3597                 tx_buf->next_to_watch = NULL;
3598                 dma_unmap_len_set(tx_buf, len, 0);
3599                 tx_desc->buffer_addr = 0;
3600                 tx_desc->cmd_type_offset_bsz = 0;
3601
3602                 /* move us past the eop_desc for start of next FD desc */
3603                 tx_buf++;
3604                 tx_desc++;
3605                 i++;
3606                 if (unlikely(!i)) {
3607                         i -= tx_ring->count;
3608                         tx_buf = tx_ring->tx_bi;
3609                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3610                 }
3611
3612                 /* update budget accounting */
3613                 budget--;
3614         } while (likely(budget));
3615
3616         i += tx_ring->count;
3617         tx_ring->next_to_clean = i;
3618
3619         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3620                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3621
3622         return budget > 0;
3623 }
3624
3625 /**
3626  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3627  * @irq: interrupt number
3628  * @data: pointer to a q_vector
3629  **/
3630 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3631 {
3632         struct i40e_q_vector *q_vector = data;
3633         struct i40e_vsi *vsi;
3634
3635         if (!q_vector->tx.ring)
3636                 return IRQ_HANDLED;
3637
3638         vsi = q_vector->tx.ring->vsi;
3639         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3640
3641         return IRQ_HANDLED;
3642 }
3643
3644 /**
3645  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3646  * @vsi: the VSI being configured
3647  * @v_idx: vector index
3648  * @qp_idx: queue pair index
3649  **/
3650 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3651 {
3652         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3653         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3654         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3655
3656         tx_ring->q_vector = q_vector;
3657         tx_ring->next = q_vector->tx.ring;
3658         q_vector->tx.ring = tx_ring;
3659         q_vector->tx.count++;
3660
3661         rx_ring->q_vector = q_vector;
3662         rx_ring->next = q_vector->rx.ring;
3663         q_vector->rx.ring = rx_ring;
3664         q_vector->rx.count++;
3665 }
3666
3667 /**
3668  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3669  * @vsi: the VSI being configured
3670  *
3671  * This function maps descriptor rings to the queue-specific vectors
3672  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3673  * one vector per queue pair, but on a constrained vector budget, we
3674  * group the queue pairs as "efficiently" as possible.
3675  **/
3676 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3677 {
3678         int qp_remaining = vsi->num_queue_pairs;
3679         int q_vectors = vsi->num_q_vectors;
3680         int num_ringpairs;
3681         int v_start = 0;
3682         int qp_idx = 0;
3683
3684         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3685          * group them so there are multiple queues per vector.
3686          * It is also important to go through all the vectors available to be
3687          * sure that if we don't use all the vectors, that the remaining vectors
3688          * are cleared. This is especially important when decreasing the
3689          * number of queues in use.
3690          */
3691         for (; v_start < q_vectors; v_start++) {
3692                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3693
3694                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3695
3696                 q_vector->num_ringpairs = num_ringpairs;
3697
3698                 q_vector->rx.count = 0;
3699                 q_vector->tx.count = 0;
3700                 q_vector->rx.ring = NULL;
3701                 q_vector->tx.ring = NULL;
3702
3703                 while (num_ringpairs--) {
3704                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3705                         qp_idx++;
3706                         qp_remaining--;
3707                 }
3708         }
3709 }
3710
3711 /**
3712  * i40e_vsi_request_irq - Request IRQ from the OS
3713  * @vsi: the VSI being configured
3714  * @basename: name for the vector
3715  **/
3716 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3717 {
3718         struct i40e_pf *pf = vsi->back;
3719         int err;
3720
3721         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3722                 err = i40e_vsi_request_irq_msix(vsi, basename);
3723         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3724                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3725                                   pf->int_name, pf);
3726         else
3727                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3728                                   pf->int_name, pf);
3729
3730         if (err)
3731                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3732
3733         return err;
3734 }
3735
3736 #ifdef CONFIG_NET_POLL_CONTROLLER
3737 /**
3738  * i40e_netpoll - A Polling 'interrupt'handler
3739  * @netdev: network interface device structure
3740  *
3741  * This is used by netconsole to send skbs without having to re-enable
3742  * interrupts.  It's not called while the normal interrupt routine is executing.
3743  **/
3744 #ifdef I40E_FCOE
3745 void i40e_netpoll(struct net_device *netdev)
3746 #else
3747 static void i40e_netpoll(struct net_device *netdev)
3748 #endif
3749 {
3750         struct i40e_netdev_priv *np = netdev_priv(netdev);
3751         struct i40e_vsi *vsi = np->vsi;
3752         struct i40e_pf *pf = vsi->back;
3753         int i;
3754
3755         /* if interface is down do nothing */
3756         if (test_bit(__I40E_DOWN, &vsi->state))
3757                 return;
3758
3759         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3760                 for (i = 0; i < vsi->num_q_vectors; i++)
3761                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3762         } else {
3763                 i40e_intr(pf->pdev->irq, netdev);
3764         }
3765 }
3766 #endif
3767
3768 /**
3769  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3770  * @pf: the PF being configured
3771  * @pf_q: the PF queue
3772  * @enable: enable or disable state of the queue
3773  *
3774  * This routine will wait for the given Tx queue of the PF to reach the
3775  * enabled or disabled state.
3776  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3777  * multiple retries; else will return 0 in case of success.
3778  **/
3779 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3780 {
3781         int i;
3782         u32 tx_reg;
3783
3784         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3785                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3786                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3787                         break;
3788
3789                 usleep_range(10, 20);
3790         }
3791         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3792                 return -ETIMEDOUT;
3793
3794         return 0;
3795 }
3796
3797 /**
3798  * i40e_vsi_control_tx - Start or stop a VSI's rings
3799  * @vsi: the VSI being configured
3800  * @enable: start or stop the rings
3801  **/
3802 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3803 {
3804         struct i40e_pf *pf = vsi->back;
3805         struct i40e_hw *hw = &pf->hw;
3806         int i, j, pf_q, ret = 0;
3807         u32 tx_reg;
3808
3809         pf_q = vsi->base_queue;
3810         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3811
3812                 /* warn the TX unit of coming changes */
3813                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3814                 if (!enable)
3815                         usleep_range(10, 20);
3816
3817                 for (j = 0; j < 50; j++) {
3818                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3819                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3820                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3821                                 break;
3822                         usleep_range(1000, 2000);
3823                 }
3824                 /* Skip if the queue is already in the requested state */
3825                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3826                         continue;
3827
3828                 /* turn on/off the queue */
3829                 if (enable) {
3830                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3831                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3832                 } else {
3833                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3834                 }
3835
3836                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3837                 /* No waiting for the Tx queue to disable */
3838                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3839                         continue;
3840
3841                 /* wait for the change to finish */
3842                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3843                 if (ret) {
3844                         dev_info(&pf->pdev->dev,
3845                                  "VSI seid %d Tx ring %d %sable timeout\n",
3846                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3847                         break;
3848                 }
3849         }
3850
3851         if (hw->revision_id == 0)
3852                 mdelay(50);
3853         return ret;
3854 }
3855
3856 /**
3857  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3858  * @pf: the PF being configured
3859  * @pf_q: the PF queue
3860  * @enable: enable or disable state of the queue
3861  *
3862  * This routine will wait for the given Rx queue of the PF to reach the
3863  * enabled or disabled state.
3864  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3865  * multiple retries; else will return 0 in case of success.
3866  **/
3867 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3868 {
3869         int i;
3870         u32 rx_reg;
3871
3872         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3873                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3874                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3875                         break;
3876
3877                 usleep_range(10, 20);
3878         }
3879         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3880                 return -ETIMEDOUT;
3881
3882         return 0;
3883 }
3884
3885 /**
3886  * i40e_vsi_control_rx - Start or stop a VSI's rings
3887  * @vsi: the VSI being configured
3888  * @enable: start or stop the rings
3889  **/
3890 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3891 {
3892         struct i40e_pf *pf = vsi->back;
3893         struct i40e_hw *hw = &pf->hw;
3894         int i, j, pf_q, ret = 0;
3895         u32 rx_reg;
3896
3897         pf_q = vsi->base_queue;
3898         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3899                 for (j = 0; j < 50; j++) {
3900                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3901                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3902                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3903                                 break;
3904                         usleep_range(1000, 2000);
3905                 }
3906
3907                 /* Skip if the queue is already in the requested state */
3908                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3909                         continue;
3910
3911                 /* turn on/off the queue */
3912                 if (enable)
3913                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3914                 else
3915                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3916                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3917
3918                 /* wait for the change to finish */
3919                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3920                 if (ret) {
3921                         dev_info(&pf->pdev->dev,
3922                                  "VSI seid %d Rx ring %d %sable timeout\n",
3923                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3924                         break;
3925                 }
3926         }
3927
3928         return ret;
3929 }
3930
3931 /**
3932  * i40e_vsi_control_rings - Start or stop a VSI's rings
3933  * @vsi: the VSI being configured
3934  * @enable: start or stop the rings
3935  **/
3936 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3937 {
3938         int ret = 0;
3939
3940         /* do rx first for enable and last for disable */
3941         if (request) {
3942                 ret = i40e_vsi_control_rx(vsi, request);
3943                 if (ret)
3944                         return ret;
3945                 ret = i40e_vsi_control_tx(vsi, request);
3946         } else {
3947                 /* Ignore return value, we need to shutdown whatever we can */
3948                 i40e_vsi_control_tx(vsi, request);
3949                 i40e_vsi_control_rx(vsi, request);
3950         }
3951
3952         return ret;
3953 }
3954
3955 /**
3956  * i40e_vsi_free_irq - Free the irq association with the OS
3957  * @vsi: the VSI being configured
3958  **/
3959 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3960 {
3961         struct i40e_pf *pf = vsi->back;
3962         struct i40e_hw *hw = &pf->hw;
3963         int base = vsi->base_vector;
3964         u32 val, qp;
3965         int i;
3966
3967         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3968                 if (!vsi->q_vectors)
3969                         return;
3970
3971                 if (!vsi->irqs_ready)
3972                         return;
3973
3974                 vsi->irqs_ready = false;
3975                 for (i = 0; i < vsi->num_q_vectors; i++) {
3976                         u16 vector = i + base;
3977
3978                         /* free only the irqs that were actually requested */
3979                         if (!vsi->q_vectors[i] ||
3980                             !vsi->q_vectors[i]->num_ringpairs)
3981                                 continue;
3982
3983                         /* clear the affinity_mask in the IRQ descriptor */
3984                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3985                                               NULL);
3986                         free_irq(pf->msix_entries[vector].vector,
3987                                  vsi->q_vectors[i]);
3988
3989                         /* Tear down the interrupt queue link list
3990                          *
3991                          * We know that they come in pairs and always
3992                          * the Rx first, then the Tx.  To clear the
3993                          * link list, stick the EOL value into the
3994                          * next_q field of the registers.
3995                          */
3996                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3997                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3998                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3999                         val |= I40E_QUEUE_END_OF_LIST
4000                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4001                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4002
4003                         while (qp != I40E_QUEUE_END_OF_LIST) {
4004                                 u32 next;
4005
4006                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4007
4008                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4009                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4010                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4011                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4012
4013                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4014                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4015
4016                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4017
4018                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4019
4020                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4021                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4022
4023                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4024                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4025                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4026                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4027
4028                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4029                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4030
4031                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4032                                 qp = next;
4033                         }
4034                 }
4035         } else {
4036                 free_irq(pf->pdev->irq, pf);
4037
4038                 val = rd32(hw, I40E_PFINT_LNKLST0);
4039                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4040                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4041                 val |= I40E_QUEUE_END_OF_LIST
4042                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4043                 wr32(hw, I40E_PFINT_LNKLST0, val);
4044
4045                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4046                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4047                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4048                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4049                          I40E_QINT_RQCTL_INTEVENT_MASK);
4050
4051                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4052                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4053
4054                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4055
4056                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4057
4058                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4059                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4060                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4061                          I40E_QINT_TQCTL_INTEVENT_MASK);
4062
4063                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4064                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4065
4066                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4067         }
4068 }
4069
4070 /**
4071  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4072  * @vsi: the VSI being configured
4073  * @v_idx: Index of vector to be freed
4074  *
4075  * This function frees the memory allocated to the q_vector.  In addition if
4076  * NAPI is enabled it will delete any references to the NAPI struct prior
4077  * to freeing the q_vector.
4078  **/
4079 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4080 {
4081         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4082         struct i40e_ring *ring;
4083
4084         if (!q_vector)
4085                 return;
4086
4087         /* disassociate q_vector from rings */
4088         i40e_for_each_ring(ring, q_vector->tx)
4089                 ring->q_vector = NULL;
4090
4091         i40e_for_each_ring(ring, q_vector->rx)
4092                 ring->q_vector = NULL;
4093
4094         /* only VSI w/ an associated netdev is set up w/ NAPI */
4095         if (vsi->netdev)
4096                 netif_napi_del(&q_vector->napi);
4097
4098         vsi->q_vectors[v_idx] = NULL;
4099
4100         kfree_rcu(q_vector, rcu);
4101 }
4102
4103 /**
4104  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4105  * @vsi: the VSI being un-configured
4106  *
4107  * This frees the memory allocated to the q_vectors and
4108  * deletes references to the NAPI struct.
4109  **/
4110 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4111 {
4112         int v_idx;
4113
4114         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4115                 i40e_free_q_vector(vsi, v_idx);
4116 }
4117
4118 /**
4119  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4120  * @pf: board private structure
4121  **/
4122 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4123 {
4124         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4125         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4126                 pci_disable_msix(pf->pdev);
4127                 kfree(pf->msix_entries);
4128                 pf->msix_entries = NULL;
4129                 kfree(pf->irq_pile);
4130                 pf->irq_pile = NULL;
4131         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4132                 pci_disable_msi(pf->pdev);
4133         }
4134         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4135 }
4136
4137 /**
4138  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4139  * @pf: board private structure
4140  *
4141  * We go through and clear interrupt specific resources and reset the structure
4142  * to pre-load conditions
4143  **/
4144 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4145 {
4146         int i;
4147
4148         i40e_stop_misc_vector(pf);
4149         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4150                 synchronize_irq(pf->msix_entries[0].vector);
4151                 free_irq(pf->msix_entries[0].vector, pf);
4152         }
4153
4154         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4155         for (i = 0; i < pf->num_alloc_vsi; i++)
4156                 if (pf->vsi[i])
4157                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4158         i40e_reset_interrupt_capability(pf);
4159 }
4160
4161 /**
4162  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4163  * @vsi: the VSI being configured
4164  **/
4165 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4166 {
4167         int q_idx;
4168
4169         if (!vsi->netdev)
4170                 return;
4171
4172         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4173                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4174 }
4175
4176 /**
4177  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4178  * @vsi: the VSI being configured
4179  **/
4180 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4181 {
4182         int q_idx;
4183
4184         if (!vsi->netdev)
4185                 return;
4186
4187         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4188                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4189 }
4190
4191 /**
4192  * i40e_vsi_close - Shut down a VSI
4193  * @vsi: the vsi to be quelled
4194  **/
4195 static void i40e_vsi_close(struct i40e_vsi *vsi)
4196 {
4197         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4198                 i40e_down(vsi);
4199         i40e_vsi_free_irq(vsi);
4200         i40e_vsi_free_tx_resources(vsi);
4201         i40e_vsi_free_rx_resources(vsi);
4202         vsi->current_netdev_flags = 0;
4203 }
4204
4205 /**
4206  * i40e_quiesce_vsi - Pause a given VSI
4207  * @vsi: the VSI being paused
4208  **/
4209 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4210 {
4211         if (test_bit(__I40E_DOWN, &vsi->state))
4212                 return;
4213
4214         /* No need to disable FCoE VSI when Tx suspended */
4215         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4216             vsi->type == I40E_VSI_FCOE) {
4217                 dev_dbg(&vsi->back->pdev->dev,
4218                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4219                 return;
4220         }
4221
4222         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4223         if (vsi->netdev && netif_running(vsi->netdev))
4224                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4225         else
4226                 i40e_vsi_close(vsi);
4227 }
4228
4229 /**
4230  * i40e_unquiesce_vsi - Resume a given VSI
4231  * @vsi: the VSI being resumed
4232  **/
4233 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4234 {
4235         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4236                 return;
4237
4238         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4239         if (vsi->netdev && netif_running(vsi->netdev))
4240                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4241         else
4242                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4243 }
4244
4245 /**
4246  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4247  * @pf: the PF
4248  **/
4249 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4250 {
4251         int v;
4252
4253         for (v = 0; v < pf->num_alloc_vsi; v++) {
4254                 if (pf->vsi[v])
4255                         i40e_quiesce_vsi(pf->vsi[v]);
4256         }
4257 }
4258
4259 /**
4260  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4261  * @pf: the PF
4262  **/
4263 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4264 {
4265         int v;
4266
4267         for (v = 0; v < pf->num_alloc_vsi; v++) {
4268                 if (pf->vsi[v])
4269                         i40e_unquiesce_vsi(pf->vsi[v]);
4270         }
4271 }
4272
4273 #ifdef CONFIG_I40E_DCB
4274 /**
4275  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4276  * @vsi: the VSI being configured
4277  *
4278  * This function waits for the given VSI's Tx queues to be disabled.
4279  **/
4280 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4281 {
4282         struct i40e_pf *pf = vsi->back;
4283         int i, pf_q, ret;
4284
4285         pf_q = vsi->base_queue;
4286         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4287                 /* Check and wait for the disable status of the queue */
4288                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4289                 if (ret) {
4290                         dev_info(&pf->pdev->dev,
4291                                  "VSI seid %d Tx ring %d disable timeout\n",
4292                                  vsi->seid, pf_q);
4293                         return ret;
4294                 }
4295         }
4296
4297         return 0;
4298 }
4299
4300 /**
4301  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4302  * @pf: the PF
4303  *
4304  * This function waits for the Tx queues to be in disabled state for all the
4305  * VSIs that are managed by this PF.
4306  **/
4307 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4308 {
4309         int v, ret = 0;
4310
4311         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4312                 /* No need to wait for FCoE VSI queues */
4313                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4314                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4315                         if (ret)
4316                                 break;
4317                 }
4318         }
4319
4320         return ret;
4321 }
4322
4323 #endif
4324
4325 /**
4326  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4327  * @q_idx: TX queue number
4328  * @vsi: Pointer to VSI struct
4329  *
4330  * This function checks specified queue for given VSI. Detects hung condition.
4331  * Sets hung bit since it is two step process. Before next run of service task
4332  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4333  * hung condition remain unchanged and during subsequent run, this function
4334  * issues SW interrupt to recover from hung condition.
4335  **/
4336 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4337 {
4338         struct i40e_ring *tx_ring = NULL;
4339         struct i40e_pf  *pf;
4340         u32 head, val, tx_pending;
4341         int i;
4342
4343         pf = vsi->back;
4344
4345         /* now that we have an index, find the tx_ring struct */
4346         for (i = 0; i < vsi->num_queue_pairs; i++) {
4347                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4348                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4349                                 tx_ring = vsi->tx_rings[i];
4350                                 break;
4351                         }
4352                 }
4353         }
4354
4355         if (!tx_ring)
4356                 return;
4357
4358         /* Read interrupt register */
4359         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4360                 val = rd32(&pf->hw,
4361                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4362                                                tx_ring->vsi->base_vector - 1));
4363         else
4364                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4365
4366         head = i40e_get_head(tx_ring);
4367
4368         tx_pending = i40e_get_tx_pending(tx_ring);
4369
4370         /* Interrupts are disabled and TX pending is non-zero,
4371          * trigger the SW interrupt (don't wait). Worst case
4372          * there will be one extra interrupt which may result
4373          * into not cleaning any queues because queues are cleaned.
4374          */
4375         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4376                 i40e_force_wb(vsi, tx_ring->q_vector);
4377 }
4378
4379 /**
4380  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4381  * @pf:  pointer to PF struct
4382  *
4383  * LAN VSI has netdev and netdev has TX queues. This function is to check
4384  * each of those TX queues if they are hung, trigger recovery by issuing
4385  * SW interrupt.
4386  **/
4387 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4388 {
4389         struct net_device *netdev;
4390         struct i40e_vsi *vsi;
4391         int i;
4392
4393         /* Only for LAN VSI */
4394         vsi = pf->vsi[pf->lan_vsi];
4395
4396         if (!vsi)
4397                 return;
4398
4399         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4400         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4401             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4402                 return;
4403
4404         /* Make sure type is MAIN VSI */
4405         if (vsi->type != I40E_VSI_MAIN)
4406                 return;
4407
4408         netdev = vsi->netdev;
4409         if (!netdev)
4410                 return;
4411
4412         /* Bail out if netif_carrier is not OK */
4413         if (!netif_carrier_ok(netdev))
4414                 return;
4415
4416         /* Go thru' TX queues for netdev */
4417         for (i = 0; i < netdev->num_tx_queues; i++) {
4418                 struct netdev_queue *q;
4419
4420                 q = netdev_get_tx_queue(netdev, i);
4421                 if (q)
4422                         i40e_detect_recover_hung_queue(i, vsi);
4423         }
4424 }
4425
4426 /**
4427  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4428  * @pf: pointer to PF
4429  *
4430  * Get TC map for ISCSI PF type that will include iSCSI TC
4431  * and LAN TC.
4432  **/
4433 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4434 {
4435         struct i40e_dcb_app_priority_table app;
4436         struct i40e_hw *hw = &pf->hw;
4437         u8 enabled_tc = 1; /* TC0 is always enabled */
4438         u8 tc, i;
4439         /* Get the iSCSI APP TLV */
4440         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4441
4442         for (i = 0; i < dcbcfg->numapps; i++) {
4443                 app = dcbcfg->app[i];
4444                 if (app.selector == I40E_APP_SEL_TCPIP &&
4445                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4446                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4447                         enabled_tc |= BIT_ULL(tc);
4448                         break;
4449                 }
4450         }
4451
4452         return enabled_tc;
4453 }
4454
4455 /**
4456  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4457  * @dcbcfg: the corresponding DCBx configuration structure
4458  *
4459  * Return the number of TCs from given DCBx configuration
4460  **/
4461 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4462 {
4463         u8 num_tc = 0;
4464         int i;
4465
4466         /* Scan the ETS Config Priority Table to find
4467          * traffic class enabled for a given priority
4468          * and use the traffic class index to get the
4469          * number of traffic classes enabled
4470          */
4471         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4472                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4473                         num_tc = dcbcfg->etscfg.prioritytable[i];
4474         }
4475
4476         /* Traffic class index starts from zero so
4477          * increment to return the actual count
4478          */
4479         return num_tc + 1;
4480 }
4481
4482 /**
4483  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4484  * @dcbcfg: the corresponding DCBx configuration structure
4485  *
4486  * Query the current DCB configuration and return the number of
4487  * traffic classes enabled from the given DCBX config
4488  **/
4489 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4490 {
4491         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4492         u8 enabled_tc = 1;
4493         u8 i;
4494
4495         for (i = 0; i < num_tc; i++)
4496                 enabled_tc |= BIT(i);
4497
4498         return enabled_tc;
4499 }
4500
4501 /**
4502  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4503  * @pf: PF being queried
4504  *
4505  * Return number of traffic classes enabled for the given PF
4506  **/
4507 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4508 {
4509         struct i40e_hw *hw = &pf->hw;
4510         u8 i, enabled_tc;
4511         u8 num_tc = 0;
4512         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4513
4514         /* If DCB is not enabled then always in single TC */
4515         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4516                 return 1;
4517
4518         /* SFP mode will be enabled for all TCs on port */
4519         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4520                 return i40e_dcb_get_num_tc(dcbcfg);
4521
4522         /* MFP mode return count of enabled TCs for this PF */
4523         if (pf->hw.func_caps.iscsi)
4524                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4525         else
4526                 return 1; /* Only TC0 */
4527
4528         /* At least have TC0 */
4529         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4530         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4531                 if (enabled_tc & BIT_ULL(i))
4532                         num_tc++;
4533         }
4534         return num_tc;
4535 }
4536
4537 /**
4538  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4539  * @pf: PF being queried
4540  *
4541  * Return a bitmap for first enabled traffic class for this PF.
4542  **/
4543 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4544 {
4545         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4546         u8 i = 0;
4547
4548         if (!enabled_tc)
4549                 return 0x1; /* TC0 */
4550
4551         /* Find the first enabled TC */
4552         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4553                 if (enabled_tc & BIT_ULL(i))
4554                         break;
4555         }
4556
4557         return BIT(i);
4558 }
4559
4560 /**
4561  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4562  * @pf: PF being queried
4563  *
4564  * Return a bitmap for enabled traffic classes for this PF.
4565  **/
4566 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4567 {
4568         /* If DCB is not enabled for this PF then just return default TC */
4569         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4570                 return i40e_pf_get_default_tc(pf);
4571
4572         /* SFP mode we want PF to be enabled for all TCs */
4573         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4574                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4575
4576         /* MFP enabled and iSCSI PF type */
4577         if (pf->hw.func_caps.iscsi)
4578                 return i40e_get_iscsi_tc_map(pf);
4579         else
4580                 return i40e_pf_get_default_tc(pf);
4581 }
4582
4583 /**
4584  * i40e_vsi_get_bw_info - Query VSI BW Information
4585  * @vsi: the VSI being queried
4586  *
4587  * Returns 0 on success, negative value on failure
4588  **/
4589 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4590 {
4591         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4592         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4593         struct i40e_pf *pf = vsi->back;
4594         struct i40e_hw *hw = &pf->hw;
4595         i40e_status ret;
4596         u32 tc_bw_max;
4597         int i;
4598
4599         /* Get the VSI level BW configuration */
4600         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4601         if (ret) {
4602                 dev_info(&pf->pdev->dev,
4603                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4604                          i40e_stat_str(&pf->hw, ret),
4605                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4606                 return -EINVAL;
4607         }
4608
4609         /* Get the VSI level BW configuration per TC */
4610         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4611                                                NULL);
4612         if (ret) {
4613                 dev_info(&pf->pdev->dev,
4614                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4615                          i40e_stat_str(&pf->hw, ret),
4616                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4617                 return -EINVAL;
4618         }
4619
4620         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4621                 dev_info(&pf->pdev->dev,
4622                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4623                          bw_config.tc_valid_bits,
4624                          bw_ets_config.tc_valid_bits);
4625                 /* Still continuing */
4626         }
4627
4628         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4629         vsi->bw_max_quanta = bw_config.max_bw;
4630         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4631                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4632         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4633                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4634                 vsi->bw_ets_limit_credits[i] =
4635                                         le16_to_cpu(bw_ets_config.credits[i]);
4636                 /* 3 bits out of 4 for each TC */
4637                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4638         }
4639
4640         return 0;
4641 }
4642
4643 /**
4644  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4645  * @vsi: the VSI being configured
4646  * @enabled_tc: TC bitmap
4647  * @bw_credits: BW shared credits per TC
4648  *
4649  * Returns 0 on success, negative value on failure
4650  **/
4651 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4652                                        u8 *bw_share)
4653 {
4654         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4655         i40e_status ret;
4656         int i;
4657
4658         bw_data.tc_valid_bits = enabled_tc;
4659         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4660                 bw_data.tc_bw_credits[i] = bw_share[i];
4661
4662         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4663                                        NULL);
4664         if (ret) {
4665                 dev_info(&vsi->back->pdev->dev,
4666                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4667                          vsi->back->hw.aq.asq_last_status);
4668                 return -EINVAL;
4669         }
4670
4671         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4672                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4673
4674         return 0;
4675 }
4676
4677 /**
4678  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4679  * @vsi: the VSI being configured
4680  * @enabled_tc: TC map to be enabled
4681  *
4682  **/
4683 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4684 {
4685         struct net_device *netdev = vsi->netdev;
4686         struct i40e_pf *pf = vsi->back;
4687         struct i40e_hw *hw = &pf->hw;
4688         u8 netdev_tc = 0;
4689         int i;
4690         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4691
4692         if (!netdev)
4693                 return;
4694
4695         if (!enabled_tc) {
4696                 netdev_reset_tc(netdev);
4697                 return;
4698         }
4699
4700         /* Set up actual enabled TCs on the VSI */
4701         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4702                 return;
4703
4704         /* set per TC queues for the VSI */
4705         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4706                 /* Only set TC queues for enabled tcs
4707                  *
4708                  * e.g. For a VSI that has TC0 and TC3 enabled the
4709                  * enabled_tc bitmap would be 0x00001001; the driver
4710                  * will set the numtc for netdev as 2 that will be
4711                  * referenced by the netdev layer as TC 0 and 1.
4712                  */
4713                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4714                         netdev_set_tc_queue(netdev,
4715                                         vsi->tc_config.tc_info[i].netdev_tc,
4716                                         vsi->tc_config.tc_info[i].qcount,
4717                                         vsi->tc_config.tc_info[i].qoffset);
4718         }
4719
4720         /* Assign UP2TC map for the VSI */
4721         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4722                 /* Get the actual TC# for the UP */
4723                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4724                 /* Get the mapped netdev TC# for the UP */
4725                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4726                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4727         }
4728 }
4729
4730 /**
4731  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4732  * @vsi: the VSI being configured
4733  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4734  **/
4735 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4736                                       struct i40e_vsi_context *ctxt)
4737 {
4738         /* copy just the sections touched not the entire info
4739          * since not all sections are valid as returned by
4740          * update vsi params
4741          */
4742         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4743         memcpy(&vsi->info.queue_mapping,
4744                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4745         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4746                sizeof(vsi->info.tc_mapping));
4747 }
4748
4749 /**
4750  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4751  * @vsi: VSI to be configured
4752  * @enabled_tc: TC bitmap
4753  *
4754  * This configures a particular VSI for TCs that are mapped to the
4755  * given TC bitmap. It uses default bandwidth share for TCs across
4756  * VSIs to configure TC for a particular VSI.
4757  *
4758  * NOTE:
4759  * It is expected that the VSI queues have been quisced before calling
4760  * this function.
4761  **/
4762 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4763 {
4764         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4765         struct i40e_vsi_context ctxt;
4766         int ret = 0;
4767         int i;
4768
4769         /* Check if enabled_tc is same as existing or new TCs */
4770         if (vsi->tc_config.enabled_tc == enabled_tc)
4771                 return ret;
4772
4773         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4774         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4775                 if (enabled_tc & BIT_ULL(i))
4776                         bw_share[i] = 1;
4777         }
4778
4779         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4780         if (ret) {
4781                 dev_info(&vsi->back->pdev->dev,
4782                          "Failed configuring TC map %d for VSI %d\n",
4783                          enabled_tc, vsi->seid);
4784                 goto out;
4785         }
4786
4787         /* Update Queue Pairs Mapping for currently enabled UPs */
4788         ctxt.seid = vsi->seid;
4789         ctxt.pf_num = vsi->back->hw.pf_id;
4790         ctxt.vf_num = 0;
4791         ctxt.uplink_seid = vsi->uplink_seid;
4792         ctxt.info = vsi->info;
4793         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4794
4795         /* Update the VSI after updating the VSI queue-mapping information */
4796         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4797         if (ret) {
4798                 dev_info(&vsi->back->pdev->dev,
4799                          "Update vsi tc config failed, err %s aq_err %s\n",
4800                          i40e_stat_str(&vsi->back->hw, ret),
4801                          i40e_aq_str(&vsi->back->hw,
4802                                      vsi->back->hw.aq.asq_last_status));
4803                 goto out;
4804         }
4805         /* update the local VSI info with updated queue map */
4806         i40e_vsi_update_queue_map(vsi, &ctxt);
4807         vsi->info.valid_sections = 0;
4808
4809         /* Update current VSI BW information */
4810         ret = i40e_vsi_get_bw_info(vsi);
4811         if (ret) {
4812                 dev_info(&vsi->back->pdev->dev,
4813                          "Failed updating vsi bw info, err %s aq_err %s\n",
4814                          i40e_stat_str(&vsi->back->hw, ret),
4815                          i40e_aq_str(&vsi->back->hw,
4816                                      vsi->back->hw.aq.asq_last_status));
4817                 goto out;
4818         }
4819
4820         /* Update the netdev TC setup */
4821         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4822 out:
4823         return ret;
4824 }
4825
4826 /**
4827  * i40e_veb_config_tc - Configure TCs for given VEB
4828  * @veb: given VEB
4829  * @enabled_tc: TC bitmap
4830  *
4831  * Configures given TC bitmap for VEB (switching) element
4832  **/
4833 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4834 {
4835         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4836         struct i40e_pf *pf = veb->pf;
4837         int ret = 0;
4838         int i;
4839
4840         /* No TCs or already enabled TCs just return */
4841         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4842                 return ret;
4843
4844         bw_data.tc_valid_bits = enabled_tc;
4845         /* bw_data.absolute_credits is not set (relative) */
4846
4847         /* Enable ETS TCs with equal BW Share for now */
4848         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4849                 if (enabled_tc & BIT_ULL(i))
4850                         bw_data.tc_bw_share_credits[i] = 1;
4851         }
4852
4853         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4854                                                    &bw_data, NULL);
4855         if (ret) {
4856                 dev_info(&pf->pdev->dev,
4857                          "VEB bw config failed, err %s aq_err %s\n",
4858                          i40e_stat_str(&pf->hw, ret),
4859                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4860                 goto out;
4861         }
4862
4863         /* Update the BW information */
4864         ret = i40e_veb_get_bw_info(veb);
4865         if (ret) {
4866                 dev_info(&pf->pdev->dev,
4867                          "Failed getting veb bw config, err %s aq_err %s\n",
4868                          i40e_stat_str(&pf->hw, ret),
4869                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4870         }
4871
4872 out:
4873         return ret;
4874 }
4875
4876 #ifdef CONFIG_I40E_DCB
4877 /**
4878  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4879  * @pf: PF struct
4880  *
4881  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4882  * the caller would've quiesce all the VSIs before calling
4883  * this function
4884  **/
4885 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4886 {
4887         u8 tc_map = 0;
4888         int ret;
4889         u8 v;
4890
4891         /* Enable the TCs available on PF to all VEBs */
4892         tc_map = i40e_pf_get_tc_map(pf);
4893         for (v = 0; v < I40E_MAX_VEB; v++) {
4894                 if (!pf->veb[v])
4895                         continue;
4896                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4897                 if (ret) {
4898                         dev_info(&pf->pdev->dev,
4899                                  "Failed configuring TC for VEB seid=%d\n",
4900                                  pf->veb[v]->seid);
4901                         /* Will try to configure as many components */
4902                 }
4903         }
4904
4905         /* Update each VSI */
4906         for (v = 0; v < pf->num_alloc_vsi; v++) {
4907                 if (!pf->vsi[v])
4908                         continue;
4909
4910                 /* - Enable all TCs for the LAN VSI
4911 #ifdef I40E_FCOE
4912                  * - For FCoE VSI only enable the TC configured
4913                  *   as per the APP TLV
4914 #endif
4915                  * - For all others keep them at TC0 for now
4916                  */
4917                 if (v == pf->lan_vsi)
4918                         tc_map = i40e_pf_get_tc_map(pf);
4919                 else
4920                         tc_map = i40e_pf_get_default_tc(pf);
4921 #ifdef I40E_FCOE
4922                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4923                         tc_map = i40e_get_fcoe_tc_map(pf);
4924 #endif /* #ifdef I40E_FCOE */
4925
4926                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4927                 if (ret) {
4928                         dev_info(&pf->pdev->dev,
4929                                  "Failed configuring TC for VSI seid=%d\n",
4930                                  pf->vsi[v]->seid);
4931                         /* Will try to configure as many components */
4932                 } else {
4933                         /* Re-configure VSI vectors based on updated TC map */
4934                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4935                         if (pf->vsi[v]->netdev)
4936                                 i40e_dcbnl_set_all(pf->vsi[v]);
4937                 }
4938         }
4939 }
4940
4941 /**
4942  * i40e_resume_port_tx - Resume port Tx
4943  * @pf: PF struct
4944  *
4945  * Resume a port's Tx and issue a PF reset in case of failure to
4946  * resume.
4947  **/
4948 static int i40e_resume_port_tx(struct i40e_pf *pf)
4949 {
4950         struct i40e_hw *hw = &pf->hw;
4951         int ret;
4952
4953         ret = i40e_aq_resume_port_tx(hw, NULL);
4954         if (ret) {
4955                 dev_info(&pf->pdev->dev,
4956                          "Resume Port Tx failed, err %s aq_err %s\n",
4957                           i40e_stat_str(&pf->hw, ret),
4958                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4959                 /* Schedule PF reset to recover */
4960                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4961                 i40e_service_event_schedule(pf);
4962         }
4963
4964         return ret;
4965 }
4966
4967 /**
4968  * i40e_init_pf_dcb - Initialize DCB configuration
4969  * @pf: PF being configured
4970  *
4971  * Query the current DCB configuration and cache it
4972  * in the hardware structure
4973  **/
4974 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4975 {
4976         struct i40e_hw *hw = &pf->hw;
4977         int err = 0;
4978
4979         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4980         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4981             (pf->hw.aq.fw_maj_ver < 4))
4982                 goto out;
4983
4984         /* Get the initial DCB configuration */
4985         err = i40e_init_dcb(hw);
4986         if (!err) {
4987                 /* Device/Function is not DCBX capable */
4988                 if ((!hw->func_caps.dcb) ||
4989                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4990                         dev_info(&pf->pdev->dev,
4991                                  "DCBX offload is not supported or is disabled for this PF.\n");
4992
4993                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4994                                 goto out;
4995
4996                 } else {
4997                         /* When status is not DISABLED then DCBX in FW */
4998                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4999                                        DCB_CAP_DCBX_VER_IEEE;
5000
5001                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5002                         /* Enable DCB tagging only when more than one TC */
5003                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5004                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5005                         dev_dbg(&pf->pdev->dev,
5006                                 "DCBX offload is supported for this PF.\n");
5007                 }
5008         } else {
5009                 dev_info(&pf->pdev->dev,
5010                          "Query for DCB configuration failed, err %s aq_err %s\n",
5011                          i40e_stat_str(&pf->hw, err),
5012                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5013         }
5014
5015 out:
5016         return err;
5017 }
5018 #endif /* CONFIG_I40E_DCB */
5019 #define SPEED_SIZE 14
5020 #define FC_SIZE 8
5021 /**
5022  * i40e_print_link_message - print link up or down
5023  * @vsi: the VSI for which link needs a message
5024  */
5025 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5026 {
5027         char *speed = "Unknown";
5028         char *fc = "Unknown";
5029
5030         if (vsi->current_isup == isup)
5031                 return;
5032         vsi->current_isup = isup;
5033         if (!isup) {
5034                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5035                 return;
5036         }
5037
5038         /* Warn user if link speed on NPAR enabled partition is not at
5039          * least 10GB
5040          */
5041         if (vsi->back->hw.func_caps.npar_enable &&
5042             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5043              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5044                 netdev_warn(vsi->netdev,
5045                             "The partition detected link speed that is less than 10Gbps\n");
5046
5047         switch (vsi->back->hw.phy.link_info.link_speed) {
5048         case I40E_LINK_SPEED_40GB:
5049                 speed = "40 G";
5050                 break;
5051         case I40E_LINK_SPEED_20GB:
5052                 speed = "20 G";
5053                 break;
5054         case I40E_LINK_SPEED_10GB:
5055                 speed = "10 G";
5056                 break;
5057         case I40E_LINK_SPEED_1GB:
5058                 speed = "1000 M";
5059                 break;
5060         case I40E_LINK_SPEED_100MB:
5061                 speed = "100 M";
5062                 break;
5063         default:
5064                 break;
5065         }
5066
5067         switch (vsi->back->hw.fc.current_mode) {
5068         case I40E_FC_FULL:
5069                 fc = "RX/TX";
5070                 break;
5071         case I40E_FC_TX_PAUSE:
5072                 fc = "TX";
5073                 break;
5074         case I40E_FC_RX_PAUSE:
5075                 fc = "RX";
5076                 break;
5077         default:
5078                 fc = "None";
5079                 break;
5080         }
5081
5082         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5083                     speed, fc);
5084 }
5085
5086 /**
5087  * i40e_up_complete - Finish the last steps of bringing up a connection
5088  * @vsi: the VSI being configured
5089  **/
5090 static int i40e_up_complete(struct i40e_vsi *vsi)
5091 {
5092         struct i40e_pf *pf = vsi->back;
5093         int err;
5094
5095         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5096                 i40e_vsi_configure_msix(vsi);
5097         else
5098                 i40e_configure_msi_and_legacy(vsi);
5099
5100         /* start rings */
5101         err = i40e_vsi_control_rings(vsi, true);
5102         if (err)
5103                 return err;
5104
5105         clear_bit(__I40E_DOWN, &vsi->state);
5106         i40e_napi_enable_all(vsi);
5107         i40e_vsi_enable_irq(vsi);
5108
5109         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5110             (vsi->netdev)) {
5111                 i40e_print_link_message(vsi, true);
5112                 netif_tx_start_all_queues(vsi->netdev);
5113                 netif_carrier_on(vsi->netdev);
5114         } else if (vsi->netdev) {
5115                 i40e_print_link_message(vsi, false);
5116                 /* need to check for qualified module here*/
5117                 if ((pf->hw.phy.link_info.link_info &
5118                         I40E_AQ_MEDIA_AVAILABLE) &&
5119                     (!(pf->hw.phy.link_info.an_info &
5120                         I40E_AQ_QUALIFIED_MODULE)))
5121                         netdev_err(vsi->netdev,
5122                                    "the driver failed to link because an unqualified module was detected.");
5123         }
5124
5125         /* replay FDIR SB filters */
5126         if (vsi->type == I40E_VSI_FDIR) {
5127                 /* reset fd counters */
5128                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5129                 if (pf->fd_tcp_rule > 0) {
5130                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5131                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5132                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5133                         pf->fd_tcp_rule = 0;
5134                 }
5135                 i40e_fdir_filter_restore(vsi);
5136         }
5137         i40e_service_event_schedule(pf);
5138
5139         return 0;
5140 }
5141
5142 /**
5143  * i40e_vsi_reinit_locked - Reset the VSI
5144  * @vsi: the VSI being configured
5145  *
5146  * Rebuild the ring structs after some configuration
5147  * has changed, e.g. MTU size.
5148  **/
5149 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5150 {
5151         struct i40e_pf *pf = vsi->back;
5152
5153         WARN_ON(in_interrupt());
5154         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5155                 usleep_range(1000, 2000);
5156         i40e_down(vsi);
5157
5158         /* Give a VF some time to respond to the reset.  The
5159          * two second wait is based upon the watchdog cycle in
5160          * the VF driver.
5161          */
5162         if (vsi->type == I40E_VSI_SRIOV)
5163                 msleep(2000);
5164         i40e_up(vsi);
5165         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5166 }
5167
5168 /**
5169  * i40e_up - Bring the connection back up after being down
5170  * @vsi: the VSI being configured
5171  **/
5172 int i40e_up(struct i40e_vsi *vsi)
5173 {
5174         int err;
5175
5176         err = i40e_vsi_configure(vsi);
5177         if (!err)
5178                 err = i40e_up_complete(vsi);
5179
5180         return err;
5181 }
5182
5183 /**
5184  * i40e_down - Shutdown the connection processing
5185  * @vsi: the VSI being stopped
5186  **/
5187 void i40e_down(struct i40e_vsi *vsi)
5188 {
5189         int i;
5190
5191         /* It is assumed that the caller of this function
5192          * sets the vsi->state __I40E_DOWN bit.
5193          */
5194         if (vsi->netdev) {
5195                 netif_carrier_off(vsi->netdev);
5196                 netif_tx_disable(vsi->netdev);
5197         }
5198         i40e_vsi_disable_irq(vsi);
5199         i40e_vsi_control_rings(vsi, false);
5200         i40e_napi_disable_all(vsi);
5201
5202         for (i = 0; i < vsi->num_queue_pairs; i++) {
5203                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5204                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5205         }
5206 }
5207
5208 /**
5209  * i40e_setup_tc - configure multiple traffic classes
5210  * @netdev: net device to configure
5211  * @tc: number of traffic classes to enable
5212  **/
5213 #ifdef I40E_FCOE
5214 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5215 #else
5216 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5217 #endif
5218 {
5219         struct i40e_netdev_priv *np = netdev_priv(netdev);
5220         struct i40e_vsi *vsi = np->vsi;
5221         struct i40e_pf *pf = vsi->back;
5222         u8 enabled_tc = 0;
5223         int ret = -EINVAL;
5224         int i;
5225
5226         /* Check if DCB enabled to continue */
5227         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5228                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5229                 goto exit;
5230         }
5231
5232         /* Check if MFP enabled */
5233         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5234                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5235                 goto exit;
5236         }
5237
5238         /* Check whether tc count is within enabled limit */
5239         if (tc > i40e_pf_get_num_tc(pf)) {
5240                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5241                 goto exit;
5242         }
5243
5244         /* Generate TC map for number of tc requested */
5245         for (i = 0; i < tc; i++)
5246                 enabled_tc |= BIT_ULL(i);
5247
5248         /* Requesting same TC configuration as already enabled */
5249         if (enabled_tc == vsi->tc_config.enabled_tc)
5250                 return 0;
5251
5252         /* Quiesce VSI queues */
5253         i40e_quiesce_vsi(vsi);
5254
5255         /* Configure VSI for enabled TCs */
5256         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5257         if (ret) {
5258                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5259                             vsi->seid);
5260                 goto exit;
5261         }
5262
5263         /* Unquiesce VSI */
5264         i40e_unquiesce_vsi(vsi);
5265
5266 exit:
5267         return ret;
5268 }
5269
5270 /**
5271  * i40e_open - Called when a network interface is made active
5272  * @netdev: network interface device structure
5273  *
5274  * The open entry point is called when a network interface is made
5275  * active by the system (IFF_UP).  At this point all resources needed
5276  * for transmit and receive operations are allocated, the interrupt
5277  * handler is registered with the OS, the netdev watchdog subtask is
5278  * enabled, and the stack is notified that the interface is ready.
5279  *
5280  * Returns 0 on success, negative value on failure
5281  **/
5282 int i40e_open(struct net_device *netdev)
5283 {
5284         struct i40e_netdev_priv *np = netdev_priv(netdev);
5285         struct i40e_vsi *vsi = np->vsi;
5286         struct i40e_pf *pf = vsi->back;
5287         int err;
5288
5289         /* disallow open during test or if eeprom is broken */
5290         if (test_bit(__I40E_TESTING, &pf->state) ||
5291             test_bit(__I40E_BAD_EEPROM, &pf->state))
5292                 return -EBUSY;
5293
5294         netif_carrier_off(netdev);
5295
5296         err = i40e_vsi_open(vsi);
5297         if (err)
5298                 return err;
5299
5300         /* configure global TSO hardware offload settings */
5301         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5302                                                        TCP_FLAG_FIN) >> 16);
5303         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5304                                                        TCP_FLAG_FIN |
5305                                                        TCP_FLAG_CWR) >> 16);
5306         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5307
5308 #ifdef CONFIG_I40E_VXLAN
5309         vxlan_get_rx_port(netdev);
5310 #endif
5311
5312         return 0;
5313 }
5314
5315 /**
5316  * i40e_vsi_open -
5317  * @vsi: the VSI to open
5318  *
5319  * Finish initialization of the VSI.
5320  *
5321  * Returns 0 on success, negative value on failure
5322  **/
5323 int i40e_vsi_open(struct i40e_vsi *vsi)
5324 {
5325         struct i40e_pf *pf = vsi->back;
5326         char int_name[I40E_INT_NAME_STR_LEN];
5327         int err;
5328
5329         /* allocate descriptors */
5330         err = i40e_vsi_setup_tx_resources(vsi);
5331         if (err)
5332                 goto err_setup_tx;
5333         err = i40e_vsi_setup_rx_resources(vsi);
5334         if (err)
5335                 goto err_setup_rx;
5336
5337         err = i40e_vsi_configure(vsi);
5338         if (err)
5339                 goto err_setup_rx;
5340
5341         if (vsi->netdev) {
5342                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5343                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5344                 err = i40e_vsi_request_irq(vsi, int_name);
5345                 if (err)
5346                         goto err_setup_rx;
5347
5348                 /* Notify the stack of the actual queue counts. */
5349                 err = netif_set_real_num_tx_queues(vsi->netdev,
5350                                                    vsi->num_queue_pairs);
5351                 if (err)
5352                         goto err_set_queues;
5353
5354                 err = netif_set_real_num_rx_queues(vsi->netdev,
5355                                                    vsi->num_queue_pairs);
5356                 if (err)
5357                         goto err_set_queues;
5358
5359         } else if (vsi->type == I40E_VSI_FDIR) {
5360                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5361                          dev_driver_string(&pf->pdev->dev),
5362                          dev_name(&pf->pdev->dev));
5363                 err = i40e_vsi_request_irq(vsi, int_name);
5364
5365         } else {
5366                 err = -EINVAL;
5367                 goto err_setup_rx;
5368         }
5369
5370         err = i40e_up_complete(vsi);
5371         if (err)
5372                 goto err_up_complete;
5373
5374         return 0;
5375
5376 err_up_complete:
5377         i40e_down(vsi);
5378 err_set_queues:
5379         i40e_vsi_free_irq(vsi);
5380 err_setup_rx:
5381         i40e_vsi_free_rx_resources(vsi);
5382 err_setup_tx:
5383         i40e_vsi_free_tx_resources(vsi);
5384         if (vsi == pf->vsi[pf->lan_vsi])
5385                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5386
5387         return err;
5388 }
5389
5390 /**
5391  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5392  * @pf: Pointer to PF
5393  *
5394  * This function destroys the hlist where all the Flow Director
5395  * filters were saved.
5396  **/
5397 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5398 {
5399         struct i40e_fdir_filter *filter;
5400         struct hlist_node *node2;
5401
5402         hlist_for_each_entry_safe(filter, node2,
5403                                   &pf->fdir_filter_list, fdir_node) {
5404                 hlist_del(&filter->fdir_node);
5405                 kfree(filter);
5406         }
5407         pf->fdir_pf_active_filters = 0;
5408 }
5409
5410 /**
5411  * i40e_close - Disables a network interface
5412  * @netdev: network interface device structure
5413  *
5414  * The close entry point is called when an interface is de-activated
5415  * by the OS.  The hardware is still under the driver's control, but
5416  * this netdev interface is disabled.
5417  *
5418  * Returns 0, this is not allowed to fail
5419  **/
5420 #ifdef I40E_FCOE
5421 int i40e_close(struct net_device *netdev)
5422 #else
5423 static int i40e_close(struct net_device *netdev)
5424 #endif
5425 {
5426         struct i40e_netdev_priv *np = netdev_priv(netdev);
5427         struct i40e_vsi *vsi = np->vsi;
5428
5429         i40e_vsi_close(vsi);
5430
5431         return 0;
5432 }
5433
5434 /**
5435  * i40e_do_reset - Start a PF or Core Reset sequence
5436  * @pf: board private structure
5437  * @reset_flags: which reset is requested
5438  *
5439  * The essential difference in resets is that the PF Reset
5440  * doesn't clear the packet buffers, doesn't reset the PE
5441  * firmware, and doesn't bother the other PFs on the chip.
5442  **/
5443 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5444 {
5445         u32 val;
5446
5447         WARN_ON(in_interrupt());
5448
5449         if (i40e_check_asq_alive(&pf->hw))
5450                 i40e_vc_notify_reset(pf);
5451
5452         /* do the biggest reset indicated */
5453         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5454
5455                 /* Request a Global Reset
5456                  *
5457                  * This will start the chip's countdown to the actual full
5458                  * chip reset event, and a warning interrupt to be sent
5459                  * to all PFs, including the requestor.  Our handler
5460                  * for the warning interrupt will deal with the shutdown
5461                  * and recovery of the switch setup.
5462                  */
5463                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5464                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5465                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5466                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5467
5468         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5469
5470                 /* Request a Core Reset
5471                  *
5472                  * Same as Global Reset, except does *not* include the MAC/PHY
5473                  */
5474                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5475                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5476                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5477                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5478                 i40e_flush(&pf->hw);
5479
5480         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5481
5482                 /* Request a PF Reset
5483                  *
5484                  * Resets only the PF-specific registers
5485                  *
5486                  * This goes directly to the tear-down and rebuild of
5487                  * the switch, since we need to do all the recovery as
5488                  * for the Core Reset.
5489                  */
5490                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5491                 i40e_handle_reset_warning(pf);
5492
5493         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5494                 int v;
5495
5496                 /* Find the VSI(s) that requested a re-init */
5497                 dev_info(&pf->pdev->dev,
5498                          "VSI reinit requested\n");
5499                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5500                         struct i40e_vsi *vsi = pf->vsi[v];
5501
5502                         if (vsi != NULL &&
5503                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5504                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5505                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5506                         }
5507                 }
5508         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5509                 int v;
5510
5511                 /* Find the VSI(s) that needs to be brought down */
5512                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5513                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5514                         struct i40e_vsi *vsi = pf->vsi[v];
5515
5516                         if (vsi != NULL &&
5517                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5518                                 set_bit(__I40E_DOWN, &vsi->state);
5519                                 i40e_down(vsi);
5520                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5521                         }
5522                 }
5523         } else {
5524                 dev_info(&pf->pdev->dev,
5525                          "bad reset request 0x%08x\n", reset_flags);
5526         }
5527 }
5528
5529 #ifdef CONFIG_I40E_DCB
5530 /**
5531  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5532  * @pf: board private structure
5533  * @old_cfg: current DCB config
5534  * @new_cfg: new DCB config
5535  **/
5536 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5537                             struct i40e_dcbx_config *old_cfg,
5538                             struct i40e_dcbx_config *new_cfg)
5539 {
5540         bool need_reconfig = false;
5541
5542         /* Check if ETS configuration has changed */
5543         if (memcmp(&new_cfg->etscfg,
5544                    &old_cfg->etscfg,
5545                    sizeof(new_cfg->etscfg))) {
5546                 /* If Priority Table has changed reconfig is needed */
5547                 if (memcmp(&new_cfg->etscfg.prioritytable,
5548                            &old_cfg->etscfg.prioritytable,
5549                            sizeof(new_cfg->etscfg.prioritytable))) {
5550                         need_reconfig = true;
5551                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5552                 }
5553
5554                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5555                            &old_cfg->etscfg.tcbwtable,
5556                            sizeof(new_cfg->etscfg.tcbwtable)))
5557                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5558
5559                 if (memcmp(&new_cfg->etscfg.tsatable,
5560                            &old_cfg->etscfg.tsatable,
5561                            sizeof(new_cfg->etscfg.tsatable)))
5562                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5563         }
5564
5565         /* Check if PFC configuration has changed */
5566         if (memcmp(&new_cfg->pfc,
5567                    &old_cfg->pfc,
5568                    sizeof(new_cfg->pfc))) {
5569                 need_reconfig = true;
5570                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5571         }
5572
5573         /* Check if APP Table has changed */
5574         if (memcmp(&new_cfg->app,
5575                    &old_cfg->app,
5576                    sizeof(new_cfg->app))) {
5577                 need_reconfig = true;
5578                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5579         }
5580
5581         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5582         return need_reconfig;
5583 }
5584
5585 /**
5586  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5587  * @pf: board private structure
5588  * @e: event info posted on ARQ
5589  **/
5590 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5591                                   struct i40e_arq_event_info *e)
5592 {
5593         struct i40e_aqc_lldp_get_mib *mib =
5594                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5595         struct i40e_hw *hw = &pf->hw;
5596         struct i40e_dcbx_config tmp_dcbx_cfg;
5597         bool need_reconfig = false;
5598         int ret = 0;
5599         u8 type;
5600
5601         /* Not DCB capable or capability disabled */
5602         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5603                 return ret;
5604
5605         /* Ignore if event is not for Nearest Bridge */
5606         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5607                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5608         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5609         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5610                 return ret;
5611
5612         /* Check MIB Type and return if event for Remote MIB update */
5613         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5614         dev_dbg(&pf->pdev->dev,
5615                 "LLDP event mib type %s\n", type ? "remote" : "local");
5616         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5617                 /* Update the remote cached instance and return */
5618                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5619                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5620                                 &hw->remote_dcbx_config);
5621                 goto exit;
5622         }
5623
5624         /* Store the old configuration */
5625         tmp_dcbx_cfg = hw->local_dcbx_config;
5626
5627         /* Reset the old DCBx configuration data */
5628         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5629         /* Get updated DCBX data from firmware */
5630         ret = i40e_get_dcb_config(&pf->hw);
5631         if (ret) {
5632                 dev_info(&pf->pdev->dev,
5633                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5634                          i40e_stat_str(&pf->hw, ret),
5635                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5636                 goto exit;
5637         }
5638
5639         /* No change detected in DCBX configs */
5640         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5641                     sizeof(tmp_dcbx_cfg))) {
5642                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5643                 goto exit;
5644         }
5645
5646         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5647                                                &hw->local_dcbx_config);
5648
5649         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5650
5651         if (!need_reconfig)
5652                 goto exit;
5653
5654         /* Enable DCB tagging only when more than one TC */
5655         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5656                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5657         else
5658                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5659
5660         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5661         /* Reconfiguration needed quiesce all VSIs */
5662         i40e_pf_quiesce_all_vsi(pf);
5663
5664         /* Changes in configuration update VEB/VSI */
5665         i40e_dcb_reconfigure(pf);
5666
5667         ret = i40e_resume_port_tx(pf);
5668
5669         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5670         /* In case of error no point in resuming VSIs */
5671         if (ret)
5672                 goto exit;
5673
5674         /* Wait for the PF's Tx queues to be disabled */
5675         ret = i40e_pf_wait_txq_disabled(pf);
5676         if (ret) {
5677                 /* Schedule PF reset to recover */
5678                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5679                 i40e_service_event_schedule(pf);
5680         } else {
5681                 i40e_pf_unquiesce_all_vsi(pf);
5682         }
5683
5684 exit:
5685         return ret;
5686 }
5687 #endif /* CONFIG_I40E_DCB */
5688
5689 /**
5690  * i40e_do_reset_safe - Protected reset path for userland calls.
5691  * @pf: board private structure
5692  * @reset_flags: which reset is requested
5693  *
5694  **/
5695 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5696 {
5697         rtnl_lock();
5698         i40e_do_reset(pf, reset_flags);
5699         rtnl_unlock();
5700 }
5701
5702 /**
5703  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5704  * @pf: board private structure
5705  * @e: event info posted on ARQ
5706  *
5707  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5708  * and VF queues
5709  **/
5710 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5711                                            struct i40e_arq_event_info *e)
5712 {
5713         struct i40e_aqc_lan_overflow *data =
5714                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5715         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5716         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5717         struct i40e_hw *hw = &pf->hw;
5718         struct i40e_vf *vf;
5719         u16 vf_id;
5720
5721         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5722                 queue, qtx_ctl);
5723
5724         /* Queue belongs to VF, find the VF and issue VF reset */
5725         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5726             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5727                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5728                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5729                 vf_id -= hw->func_caps.vf_base_id;
5730                 vf = &pf->vf[vf_id];
5731                 i40e_vc_notify_vf_reset(vf);
5732                 /* Allow VF to process pending reset notification */
5733                 msleep(20);
5734                 i40e_reset_vf(vf, false);
5735         }
5736 }
5737
5738 /**
5739  * i40e_service_event_complete - Finish up the service event
5740  * @pf: board private structure
5741  **/
5742 static void i40e_service_event_complete(struct i40e_pf *pf)
5743 {
5744         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5745
5746         /* flush memory to make sure state is correct before next watchog */
5747         smp_mb__before_atomic();
5748         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5749 }
5750
5751 /**
5752  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5753  * @pf: board private structure
5754  **/
5755 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5756 {
5757         u32 val, fcnt_prog;
5758
5759         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5760         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5761         return fcnt_prog;
5762 }
5763
5764 /**
5765  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5766  * @pf: board private structure
5767  **/
5768 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5769 {
5770         u32 val, fcnt_prog;
5771
5772         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5773         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5774                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5775                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5776         return fcnt_prog;
5777 }
5778
5779 /**
5780  * i40e_get_global_fd_count - Get total FD filters programmed on device
5781  * @pf: board private structure
5782  **/
5783 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5784 {
5785         u32 val, fcnt_prog;
5786
5787         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5788         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5789                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5790                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5791         return fcnt_prog;
5792 }
5793
5794 /**
5795  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5796  * @pf: board private structure
5797  **/
5798 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5799 {
5800         struct i40e_fdir_filter *filter;
5801         u32 fcnt_prog, fcnt_avail;
5802         struct hlist_node *node;
5803
5804         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5805                 return;
5806
5807         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5808          * to re-enable
5809          */
5810         fcnt_prog = i40e_get_global_fd_count(pf);
5811         fcnt_avail = pf->fdir_pf_filter_count;
5812         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5813             (pf->fd_add_err == 0) ||
5814             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5815                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5816                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5817                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5818                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5819                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5820                 }
5821         }
5822         /* Wait for some more space to be available to turn on ATR */
5823         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5824                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5825                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5826                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5827                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5828                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5829                 }
5830         }
5831
5832         /* if hw had a problem adding a filter, delete it */
5833         if (pf->fd_inv > 0) {
5834                 hlist_for_each_entry_safe(filter, node,
5835                                           &pf->fdir_filter_list, fdir_node) {
5836                         if (filter->fd_id == pf->fd_inv) {
5837                                 hlist_del(&filter->fdir_node);
5838                                 kfree(filter);
5839                                 pf->fdir_pf_active_filters--;
5840                         }
5841                 }
5842         }
5843 }
5844
5845 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5846 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5847 /**
5848  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5849  * @pf: board private structure
5850  **/
5851 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5852 {
5853         unsigned long min_flush_time;
5854         int flush_wait_retry = 50;
5855         bool disable_atr = false;
5856         int fd_room;
5857         int reg;
5858
5859         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5860                 return;
5861
5862         if (!time_after(jiffies, pf->fd_flush_timestamp +
5863                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5864                 return;
5865
5866         /* If the flush is happening too quick and we have mostly SB rules we
5867          * should not re-enable ATR for some time.
5868          */
5869         min_flush_time = pf->fd_flush_timestamp +
5870                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5871         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5872
5873         if (!(time_after(jiffies, min_flush_time)) &&
5874             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5875                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5876                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5877                 disable_atr = true;
5878         }
5879
5880         pf->fd_flush_timestamp = jiffies;
5881         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5882         /* flush all filters */
5883         wr32(&pf->hw, I40E_PFQF_CTL_1,
5884              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5885         i40e_flush(&pf->hw);
5886         pf->fd_flush_cnt++;
5887         pf->fd_add_err = 0;
5888         do {
5889                 /* Check FD flush status every 5-6msec */
5890                 usleep_range(5000, 6000);
5891                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5892                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5893                         break;
5894         } while (flush_wait_retry--);
5895         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5896                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5897         } else {
5898                 /* replay sideband filters */
5899                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5900                 if (!disable_atr)
5901                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5902                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5903                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5904                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5905         }
5906
5907 }
5908
5909 /**
5910  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5911  * @pf: board private structure
5912  **/
5913 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5914 {
5915         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5916 }
5917
5918 /* We can see up to 256 filter programming desc in transit if the filters are
5919  * being applied really fast; before we see the first
5920  * filter miss error on Rx queue 0. Accumulating enough error messages before
5921  * reacting will make sure we don't cause flush too often.
5922  */
5923 #define I40E_MAX_FD_PROGRAM_ERROR 256
5924
5925 /**
5926  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5927  * @pf: board private structure
5928  **/
5929 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5930 {
5931
5932         /* if interface is down do nothing */
5933         if (test_bit(__I40E_DOWN, &pf->state))
5934                 return;
5935
5936         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5937                 return;
5938
5939         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5940                 i40e_fdir_flush_and_replay(pf);
5941
5942         i40e_fdir_check_and_reenable(pf);
5943
5944 }
5945
5946 /**
5947  * i40e_vsi_link_event - notify VSI of a link event
5948  * @vsi: vsi to be notified
5949  * @link_up: link up or down
5950  **/
5951 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5952 {
5953         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5954                 return;
5955
5956         switch (vsi->type) {
5957         case I40E_VSI_MAIN:
5958 #ifdef I40E_FCOE
5959         case I40E_VSI_FCOE:
5960 #endif
5961                 if (!vsi->netdev || !vsi->netdev_registered)
5962                         break;
5963
5964                 if (link_up) {
5965                         netif_carrier_on(vsi->netdev);
5966                         netif_tx_wake_all_queues(vsi->netdev);
5967                 } else {
5968                         netif_carrier_off(vsi->netdev);
5969                         netif_tx_stop_all_queues(vsi->netdev);
5970                 }
5971                 break;
5972
5973         case I40E_VSI_SRIOV:
5974         case I40E_VSI_VMDQ2:
5975         case I40E_VSI_CTRL:
5976         case I40E_VSI_MIRROR:
5977         default:
5978                 /* there is no notification for other VSIs */
5979                 break;
5980         }
5981 }
5982
5983 /**
5984  * i40e_veb_link_event - notify elements on the veb of a link event
5985  * @veb: veb to be notified
5986  * @link_up: link up or down
5987  **/
5988 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5989 {
5990         struct i40e_pf *pf;
5991         int i;
5992
5993         if (!veb || !veb->pf)
5994                 return;
5995         pf = veb->pf;
5996
5997         /* depth first... */
5998         for (i = 0; i < I40E_MAX_VEB; i++)
5999                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6000                         i40e_veb_link_event(pf->veb[i], link_up);
6001
6002         /* ... now the local VSIs */
6003         for (i = 0; i < pf->num_alloc_vsi; i++)
6004                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6005                         i40e_vsi_link_event(pf->vsi[i], link_up);
6006 }
6007
6008 /**
6009  * i40e_link_event - Update netif_carrier status
6010  * @pf: board private structure
6011  **/
6012 static void i40e_link_event(struct i40e_pf *pf)
6013 {
6014         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6015         u8 new_link_speed, old_link_speed;
6016         i40e_status status;
6017         bool new_link, old_link;
6018
6019         /* set this to force the get_link_status call to refresh state */
6020         pf->hw.phy.get_link_info = true;
6021
6022         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6023
6024         status = i40e_get_link_status(&pf->hw, &new_link);
6025         if (status) {
6026                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6027                         status);
6028                 return;
6029         }
6030
6031         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6032         new_link_speed = pf->hw.phy.link_info.link_speed;
6033
6034         if (new_link == old_link &&
6035             new_link_speed == old_link_speed &&
6036             (test_bit(__I40E_DOWN, &vsi->state) ||
6037              new_link == netif_carrier_ok(vsi->netdev)))
6038                 return;
6039
6040         if (!test_bit(__I40E_DOWN, &vsi->state))
6041                 i40e_print_link_message(vsi, new_link);
6042
6043         /* Notify the base of the switch tree connected to
6044          * the link.  Floating VEBs are not notified.
6045          */
6046         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6047                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6048         else
6049                 i40e_vsi_link_event(vsi, new_link);
6050
6051         if (pf->vf)
6052                 i40e_vc_notify_link_state(pf);
6053
6054         if (pf->flags & I40E_FLAG_PTP)
6055                 i40e_ptp_set_increment(pf);
6056 }
6057
6058 /**
6059  * i40e_watchdog_subtask - periodic checks not using event driven response
6060  * @pf: board private structure
6061  **/
6062 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6063 {
6064         int i;
6065
6066         /* if interface is down do nothing */
6067         if (test_bit(__I40E_DOWN, &pf->state) ||
6068             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6069                 return;
6070
6071         /* make sure we don't do these things too often */
6072         if (time_before(jiffies, (pf->service_timer_previous +
6073                                   pf->service_timer_period)))
6074                 return;
6075         pf->service_timer_previous = jiffies;
6076
6077         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6078                 i40e_link_event(pf);
6079
6080         /* Update the stats for active netdevs so the network stack
6081          * can look at updated numbers whenever it cares to
6082          */
6083         for (i = 0; i < pf->num_alloc_vsi; i++)
6084                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6085                         i40e_update_stats(pf->vsi[i]);
6086
6087         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6088                 /* Update the stats for the active switching components */
6089                 for (i = 0; i < I40E_MAX_VEB; i++)
6090                         if (pf->veb[i])
6091                                 i40e_update_veb_stats(pf->veb[i]);
6092         }
6093
6094         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6095 }
6096
6097 /**
6098  * i40e_reset_subtask - Set up for resetting the device and driver
6099  * @pf: board private structure
6100  **/
6101 static void i40e_reset_subtask(struct i40e_pf *pf)
6102 {
6103         u32 reset_flags = 0;
6104
6105         rtnl_lock();
6106         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6107                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6108                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6109         }
6110         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6111                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6112                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6113         }
6114         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6115                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6116                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6117         }
6118         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6119                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6120                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6121         }
6122         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6123                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6124                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6125         }
6126
6127         /* If there's a recovery already waiting, it takes
6128          * precedence before starting a new reset sequence.
6129          */
6130         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6131                 i40e_handle_reset_warning(pf);
6132                 goto unlock;
6133         }
6134
6135         /* If we're already down or resetting, just bail */
6136         if (reset_flags &&
6137             !test_bit(__I40E_DOWN, &pf->state) &&
6138             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6139                 i40e_do_reset(pf, reset_flags);
6140
6141 unlock:
6142         rtnl_unlock();
6143 }
6144
6145 /**
6146  * i40e_handle_link_event - Handle link event
6147  * @pf: board private structure
6148  * @e: event info posted on ARQ
6149  **/
6150 static void i40e_handle_link_event(struct i40e_pf *pf,
6151                                    struct i40e_arq_event_info *e)
6152 {
6153         struct i40e_hw *hw = &pf->hw;
6154         struct i40e_aqc_get_link_status *status =
6155                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6156
6157         /* save off old link status information */
6158         hw->phy.link_info_old = hw->phy.link_info;
6159
6160         /* Do a new status request to re-enable LSE reporting
6161          * and load new status information into the hw struct
6162          * This completely ignores any state information
6163          * in the ARQ event info, instead choosing to always
6164          * issue the AQ update link status command.
6165          */
6166         i40e_link_event(pf);
6167
6168         /* check for unqualified module, if link is down */
6169         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6170             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6171             (!(status->link_info & I40E_AQ_LINK_UP)))
6172                 dev_err(&pf->pdev->dev,
6173                         "The driver failed to link because an unqualified module was detected.\n");
6174 }
6175
6176 /**
6177  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6178  * @pf: board private structure
6179  **/
6180 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6181 {
6182         struct i40e_arq_event_info event;
6183         struct i40e_hw *hw = &pf->hw;
6184         u16 pending, i = 0;
6185         i40e_status ret;
6186         u16 opcode;
6187         u32 oldval;
6188         u32 val;
6189
6190         /* Do not run clean AQ when PF reset fails */
6191         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6192                 return;
6193
6194         /* check for error indications */
6195         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6196         oldval = val;
6197         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6198                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6199                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6200         }
6201         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6202                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6203                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6204         }
6205         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6206                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6207                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6208         }
6209         if (oldval != val)
6210                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6211
6212         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6213         oldval = val;
6214         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6215                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6216                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6217         }
6218         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6219                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6220                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6221         }
6222         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6223                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6224                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6225         }
6226         if (oldval != val)
6227                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6228
6229         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6230         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6231         if (!event.msg_buf)
6232                 return;
6233
6234         do {
6235                 ret = i40e_clean_arq_element(hw, &event, &pending);
6236                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6237                         break;
6238                 else if (ret) {
6239                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6240                         break;
6241                 }
6242
6243                 opcode = le16_to_cpu(event.desc.opcode);
6244                 switch (opcode) {
6245
6246                 case i40e_aqc_opc_get_link_status:
6247                         i40e_handle_link_event(pf, &event);
6248                         break;
6249                 case i40e_aqc_opc_send_msg_to_pf:
6250                         ret = i40e_vc_process_vf_msg(pf,
6251                                         le16_to_cpu(event.desc.retval),
6252                                         le32_to_cpu(event.desc.cookie_high),
6253                                         le32_to_cpu(event.desc.cookie_low),
6254                                         event.msg_buf,
6255                                         event.msg_len);
6256                         break;
6257                 case i40e_aqc_opc_lldp_update_mib:
6258                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6259 #ifdef CONFIG_I40E_DCB
6260                         rtnl_lock();
6261                         ret = i40e_handle_lldp_event(pf, &event);
6262                         rtnl_unlock();
6263 #endif /* CONFIG_I40E_DCB */
6264                         break;
6265                 case i40e_aqc_opc_event_lan_overflow:
6266                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6267                         i40e_handle_lan_overflow_event(pf, &event);
6268                         break;
6269                 case i40e_aqc_opc_send_msg_to_peer:
6270                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6271                         break;
6272                 case i40e_aqc_opc_nvm_erase:
6273                 case i40e_aqc_opc_nvm_update:
6274                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6275                         break;
6276                 default:
6277                         dev_info(&pf->pdev->dev,
6278                                  "ARQ Error: Unknown event 0x%04x received\n",
6279                                  opcode);
6280                         break;
6281                 }
6282         } while (pending && (i++ < pf->adminq_work_limit));
6283
6284         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6285         /* re-enable Admin queue interrupt cause */
6286         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6287         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6288         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6289         i40e_flush(hw);
6290
6291         kfree(event.msg_buf);
6292 }
6293
6294 /**
6295  * i40e_verify_eeprom - make sure eeprom is good to use
6296  * @pf: board private structure
6297  **/
6298 static void i40e_verify_eeprom(struct i40e_pf *pf)
6299 {
6300         int err;
6301
6302         err = i40e_diag_eeprom_test(&pf->hw);
6303         if (err) {
6304                 /* retry in case of garbage read */
6305                 err = i40e_diag_eeprom_test(&pf->hw);
6306                 if (err) {
6307                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6308                                  err);
6309                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6310                 }
6311         }
6312
6313         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6314                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6315                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6316         }
6317 }
6318
6319 /**
6320  * i40e_enable_pf_switch_lb
6321  * @pf: pointer to the PF structure
6322  *
6323  * enable switch loop back or die - no point in a return value
6324  **/
6325 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6326 {
6327         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6328         struct i40e_vsi_context ctxt;
6329         int ret;
6330
6331         ctxt.seid = pf->main_vsi_seid;
6332         ctxt.pf_num = pf->hw.pf_id;
6333         ctxt.vf_num = 0;
6334         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6335         if (ret) {
6336                 dev_info(&pf->pdev->dev,
6337                          "couldn't get PF vsi config, err %s aq_err %s\n",
6338                          i40e_stat_str(&pf->hw, ret),
6339                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6340                 return;
6341         }
6342         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6343         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6344         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6345
6346         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6347         if (ret) {
6348                 dev_info(&pf->pdev->dev,
6349                          "update vsi switch failed, err %s aq_err %s\n",
6350                          i40e_stat_str(&pf->hw, ret),
6351                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6352         }
6353 }
6354
6355 /**
6356  * i40e_disable_pf_switch_lb
6357  * @pf: pointer to the PF structure
6358  *
6359  * disable switch loop back or die - no point in a return value
6360  **/
6361 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6362 {
6363         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6364         struct i40e_vsi_context ctxt;
6365         int ret;
6366
6367         ctxt.seid = pf->main_vsi_seid;
6368         ctxt.pf_num = pf->hw.pf_id;
6369         ctxt.vf_num = 0;
6370         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6371         if (ret) {
6372                 dev_info(&pf->pdev->dev,
6373                          "couldn't get PF vsi config, err %s aq_err %s\n",
6374                          i40e_stat_str(&pf->hw, ret),
6375                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6376                 return;
6377         }
6378         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6379         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6380         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6381
6382         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6383         if (ret) {
6384                 dev_info(&pf->pdev->dev,
6385                          "update vsi switch failed, err %s aq_err %s\n",
6386                          i40e_stat_str(&pf->hw, ret),
6387                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6388         }
6389 }
6390
6391 /**
6392  * i40e_config_bridge_mode - Configure the HW bridge mode
6393  * @veb: pointer to the bridge instance
6394  *
6395  * Configure the loop back mode for the LAN VSI that is downlink to the
6396  * specified HW bridge instance. It is expected this function is called
6397  * when a new HW bridge is instantiated.
6398  **/
6399 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6400 {
6401         struct i40e_pf *pf = veb->pf;
6402
6403         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6404                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6405                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6406         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6407                 i40e_disable_pf_switch_lb(pf);
6408         else
6409                 i40e_enable_pf_switch_lb(pf);
6410 }
6411
6412 /**
6413  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6414  * @veb: pointer to the VEB instance
6415  *
6416  * This is a recursive function that first builds the attached VSIs then
6417  * recurses in to build the next layer of VEB.  We track the connections
6418  * through our own index numbers because the seid's from the HW could
6419  * change across the reset.
6420  **/
6421 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6422 {
6423         struct i40e_vsi *ctl_vsi = NULL;
6424         struct i40e_pf *pf = veb->pf;
6425         int v, veb_idx;
6426         int ret;
6427
6428         /* build VSI that owns this VEB, temporarily attached to base VEB */
6429         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6430                 if (pf->vsi[v] &&
6431                     pf->vsi[v]->veb_idx == veb->idx &&
6432                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6433                         ctl_vsi = pf->vsi[v];
6434                         break;
6435                 }
6436         }
6437         if (!ctl_vsi) {
6438                 dev_info(&pf->pdev->dev,
6439                          "missing owner VSI for veb_idx %d\n", veb->idx);
6440                 ret = -ENOENT;
6441                 goto end_reconstitute;
6442         }
6443         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6444                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6445         ret = i40e_add_vsi(ctl_vsi);
6446         if (ret) {
6447                 dev_info(&pf->pdev->dev,
6448                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6449                          veb->idx, ret);
6450                 goto end_reconstitute;
6451         }
6452         i40e_vsi_reset_stats(ctl_vsi);
6453
6454         /* create the VEB in the switch and move the VSI onto the VEB */
6455         ret = i40e_add_veb(veb, ctl_vsi);
6456         if (ret)
6457                 goto end_reconstitute;
6458
6459         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6460                 veb->bridge_mode = BRIDGE_MODE_VEB;
6461         else
6462                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6463         i40e_config_bridge_mode(veb);
6464
6465         /* create the remaining VSIs attached to this VEB */
6466         for (v = 0; v < pf->num_alloc_vsi; v++) {
6467                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6468                         continue;
6469
6470                 if (pf->vsi[v]->veb_idx == veb->idx) {
6471                         struct i40e_vsi *vsi = pf->vsi[v];
6472
6473                         vsi->uplink_seid = veb->seid;
6474                         ret = i40e_add_vsi(vsi);
6475                         if (ret) {
6476                                 dev_info(&pf->pdev->dev,
6477                                          "rebuild of vsi_idx %d failed: %d\n",
6478                                          v, ret);
6479                                 goto end_reconstitute;
6480                         }
6481                         i40e_vsi_reset_stats(vsi);
6482                 }
6483         }
6484
6485         /* create any VEBs attached to this VEB - RECURSION */
6486         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6487                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6488                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6489                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6490                         if (ret)
6491                                 break;
6492                 }
6493         }
6494
6495 end_reconstitute:
6496         return ret;
6497 }
6498
6499 /**
6500  * i40e_get_capabilities - get info about the HW
6501  * @pf: the PF struct
6502  **/
6503 static int i40e_get_capabilities(struct i40e_pf *pf)
6504 {
6505         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6506         u16 data_size;
6507         int buf_len;
6508         int err;
6509
6510         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6511         do {
6512                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6513                 if (!cap_buf)
6514                         return -ENOMEM;
6515
6516                 /* this loads the data into the hw struct for us */
6517                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6518                                             &data_size,
6519                                             i40e_aqc_opc_list_func_capabilities,
6520                                             NULL);
6521                 /* data loaded, buffer no longer needed */
6522                 kfree(cap_buf);
6523
6524                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6525                         /* retry with a larger buffer */
6526                         buf_len = data_size;
6527                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6528                         dev_info(&pf->pdev->dev,
6529                                  "capability discovery failed, err %s aq_err %s\n",
6530                                  i40e_stat_str(&pf->hw, err),
6531                                  i40e_aq_str(&pf->hw,
6532                                              pf->hw.aq.asq_last_status));
6533                         return -ENODEV;
6534                 }
6535         } while (err);
6536
6537         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6538                 dev_info(&pf->pdev->dev,
6539                          "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",
6540                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6541                          pf->hw.func_caps.num_msix_vectors,
6542                          pf->hw.func_caps.num_msix_vectors_vf,
6543                          pf->hw.func_caps.fd_filters_guaranteed,
6544                          pf->hw.func_caps.fd_filters_best_effort,
6545                          pf->hw.func_caps.num_tx_qp,
6546                          pf->hw.func_caps.num_vsis);
6547
6548 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6549                        + pf->hw.func_caps.num_vfs)
6550         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6551                 dev_info(&pf->pdev->dev,
6552                          "got num_vsis %d, setting num_vsis to %d\n",
6553                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6554                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6555         }
6556
6557         return 0;
6558 }
6559
6560 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6561
6562 /**
6563  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6564  * @pf: board private structure
6565  **/
6566 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6567 {
6568         struct i40e_vsi *vsi;
6569         int i;
6570
6571         /* quick workaround for an NVM issue that leaves a critical register
6572          * uninitialized
6573          */
6574         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6575                 static const u32 hkey[] = {
6576                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6577                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6578                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6579                         0x95b3a76d};
6580
6581                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6582                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6583         }
6584
6585         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6586                 return;
6587
6588         /* find existing VSI and see if it needs configuring */
6589         vsi = NULL;
6590         for (i = 0; i < pf->num_alloc_vsi; i++) {
6591                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6592                         vsi = pf->vsi[i];
6593                         break;
6594                 }
6595         }
6596
6597         /* create a new VSI if none exists */
6598         if (!vsi) {
6599                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6600                                      pf->vsi[pf->lan_vsi]->seid, 0);
6601                 if (!vsi) {
6602                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6603                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6604                         return;
6605                 }
6606         }
6607
6608         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6609 }
6610
6611 /**
6612  * i40e_fdir_teardown - release the Flow Director resources
6613  * @pf: board private structure
6614  **/
6615 static void i40e_fdir_teardown(struct i40e_pf *pf)
6616 {
6617         int i;
6618
6619         i40e_fdir_filter_exit(pf);
6620         for (i = 0; i < pf->num_alloc_vsi; i++) {
6621                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6622                         i40e_vsi_release(pf->vsi[i]);
6623                         break;
6624                 }
6625         }
6626 }
6627
6628 /**
6629  * i40e_prep_for_reset - prep for the core to reset
6630  * @pf: board private structure
6631  *
6632  * Close up the VFs and other things in prep for PF Reset.
6633   **/
6634 static void i40e_prep_for_reset(struct i40e_pf *pf)
6635 {
6636         struct i40e_hw *hw = &pf->hw;
6637         i40e_status ret = 0;
6638         u32 v;
6639
6640         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6641         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6642                 return;
6643
6644         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6645
6646         /* quiesce the VSIs and their queues that are not already DOWN */
6647         i40e_pf_quiesce_all_vsi(pf);
6648
6649         for (v = 0; v < pf->num_alloc_vsi; v++) {
6650                 if (pf->vsi[v])
6651                         pf->vsi[v]->seid = 0;
6652         }
6653
6654         i40e_shutdown_adminq(&pf->hw);
6655
6656         /* call shutdown HMC */
6657         if (hw->hmc.hmc_obj) {
6658                 ret = i40e_shutdown_lan_hmc(hw);
6659                 if (ret)
6660                         dev_warn(&pf->pdev->dev,
6661                                  "shutdown_lan_hmc failed: %d\n", ret);
6662         }
6663 }
6664
6665 /**
6666  * i40e_send_version - update firmware with driver version
6667  * @pf: PF struct
6668  */
6669 static void i40e_send_version(struct i40e_pf *pf)
6670 {
6671         struct i40e_driver_version dv;
6672
6673         dv.major_version = DRV_VERSION_MAJOR;
6674         dv.minor_version = DRV_VERSION_MINOR;
6675         dv.build_version = DRV_VERSION_BUILD;
6676         dv.subbuild_version = 0;
6677         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6678         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6679 }
6680
6681 /**
6682  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6683  * @pf: board private structure
6684  * @reinit: if the Main VSI needs to re-initialized.
6685  **/
6686 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6687 {
6688         struct i40e_hw *hw = &pf->hw;
6689         u8 set_fc_aq_fail = 0;
6690         i40e_status ret;
6691         u32 val;
6692         u32 v;
6693
6694         /* Now we wait for GRST to settle out.
6695          * We don't have to delete the VEBs or VSIs from the hw switch
6696          * because the reset will make them disappear.
6697          */
6698         ret = i40e_pf_reset(hw);
6699         if (ret) {
6700                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6701                 set_bit(__I40E_RESET_FAILED, &pf->state);
6702                 goto clear_recovery;
6703         }
6704         pf->pfr_count++;
6705
6706         if (test_bit(__I40E_DOWN, &pf->state))
6707                 goto clear_recovery;
6708         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6709
6710         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6711         ret = i40e_init_adminq(&pf->hw);
6712         if (ret) {
6713                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6714                          i40e_stat_str(&pf->hw, ret),
6715                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6716                 goto clear_recovery;
6717         }
6718
6719         /* re-verify the eeprom if we just had an EMP reset */
6720         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6721                 i40e_verify_eeprom(pf);
6722
6723         i40e_clear_pxe_mode(hw);
6724         ret = i40e_get_capabilities(pf);
6725         if (ret)
6726                 goto end_core_reset;
6727
6728         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6729                                 hw->func_caps.num_rx_qp,
6730                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6731         if (ret) {
6732                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6733                 goto end_core_reset;
6734         }
6735         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6736         if (ret) {
6737                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6738                 goto end_core_reset;
6739         }
6740
6741 #ifdef CONFIG_I40E_DCB
6742         ret = i40e_init_pf_dcb(pf);
6743         if (ret) {
6744                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6745                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6746                 /* Continue without DCB enabled */
6747         }
6748 #endif /* CONFIG_I40E_DCB */
6749 #ifdef I40E_FCOE
6750         i40e_init_pf_fcoe(pf);
6751
6752 #endif
6753         /* do basic switch setup */
6754         ret = i40e_setup_pf_switch(pf, reinit);
6755         if (ret)
6756                 goto end_core_reset;
6757
6758         /* driver is only interested in link up/down and module qualification
6759          * reports from firmware
6760          */
6761         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6762                                        I40E_AQ_EVENT_LINK_UPDOWN |
6763                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6764         if (ret)
6765                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6766                          i40e_stat_str(&pf->hw, ret),
6767                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6768
6769         /* make sure our flow control settings are restored */
6770         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6771         if (ret)
6772                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6773                         i40e_stat_str(&pf->hw, ret),
6774                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6775
6776         /* Rebuild the VSIs and VEBs that existed before reset.
6777          * They are still in our local switch element arrays, so only
6778          * need to rebuild the switch model in the HW.
6779          *
6780          * If there were VEBs but the reconstitution failed, we'll try
6781          * try to recover minimal use by getting the basic PF VSI working.
6782          */
6783         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6784                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6785                 /* find the one VEB connected to the MAC, and find orphans */
6786                 for (v = 0; v < I40E_MAX_VEB; v++) {
6787                         if (!pf->veb[v])
6788                                 continue;
6789
6790                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6791                             pf->veb[v]->uplink_seid == 0) {
6792                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6793
6794                                 if (!ret)
6795                                         continue;
6796
6797                                 /* If Main VEB failed, we're in deep doodoo,
6798                                  * so give up rebuilding the switch and set up
6799                                  * for minimal rebuild of PF VSI.
6800                                  * If orphan failed, we'll report the error
6801                                  * but try to keep going.
6802                                  */
6803                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6804                                         dev_info(&pf->pdev->dev,
6805                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6806                                                  ret);
6807                                         pf->vsi[pf->lan_vsi]->uplink_seid
6808                                                                 = pf->mac_seid;
6809                                         break;
6810                                 } else if (pf->veb[v]->uplink_seid == 0) {
6811                                         dev_info(&pf->pdev->dev,
6812                                                  "rebuild of orphan VEB failed: %d\n",
6813                                                  ret);
6814                                 }
6815                         }
6816                 }
6817         }
6818
6819         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6820                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6821                 /* no VEB, so rebuild only the Main VSI */
6822                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6823                 if (ret) {
6824                         dev_info(&pf->pdev->dev,
6825                                  "rebuild of Main VSI failed: %d\n", ret);
6826                         goto end_core_reset;
6827                 }
6828         }
6829
6830         /* Reconfigure hardware for allowing smaller MSS in the case
6831          * of TSO, so that we avoid the MDD being fired and causing
6832          * a reset in the case of small MSS+TSO.
6833          */
6834 #define I40E_REG_MSS          0x000E64DC
6835 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6836 #define I40E_64BYTE_MSS       0x400000
6837         val = rd32(hw, I40E_REG_MSS);
6838         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6839                 val &= ~I40E_REG_MSS_MIN_MASK;
6840                 val |= I40E_64BYTE_MSS;
6841                 wr32(hw, I40E_REG_MSS, val);
6842         }
6843
6844         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6845             (pf->hw.aq.fw_maj_ver < 4)) {
6846                 msleep(75);
6847                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6848                 if (ret)
6849                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6850                                  i40e_stat_str(&pf->hw, ret),
6851                                  i40e_aq_str(&pf->hw,
6852                                              pf->hw.aq.asq_last_status));
6853         }
6854         /* reinit the misc interrupt */
6855         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6856                 ret = i40e_setup_misc_vector(pf);
6857
6858         /* Add a filter to drop all Flow control frames from any VSI from being
6859          * transmitted. By doing so we stop a malicious VF from sending out
6860          * PAUSE or PFC frames and potentially controlling traffic for other
6861          * PF/VF VSIs.
6862          * The FW can still send Flow control frames if enabled.
6863          */
6864         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6865                                                        pf->main_vsi_seid);
6866
6867         /* restart the VSIs that were rebuilt and running before the reset */
6868         i40e_pf_unquiesce_all_vsi(pf);
6869
6870         if (pf->num_alloc_vfs) {
6871                 for (v = 0; v < pf->num_alloc_vfs; v++)
6872                         i40e_reset_vf(&pf->vf[v], true);
6873         }
6874
6875         /* tell the firmware that we're starting */
6876         i40e_send_version(pf);
6877
6878 end_core_reset:
6879         clear_bit(__I40E_RESET_FAILED, &pf->state);
6880 clear_recovery:
6881         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6882 }
6883
6884 /**
6885  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6886  * @pf: board private structure
6887  *
6888  * Close up the VFs and other things in prep for a Core Reset,
6889  * then get ready to rebuild the world.
6890  **/
6891 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6892 {
6893         i40e_prep_for_reset(pf);
6894         i40e_reset_and_rebuild(pf, false);
6895 }
6896
6897 /**
6898  * i40e_handle_mdd_event
6899  * @pf: pointer to the PF structure
6900  *
6901  * Called from the MDD irq handler to identify possibly malicious vfs
6902  **/
6903 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6904 {
6905         struct i40e_hw *hw = &pf->hw;
6906         bool mdd_detected = false;
6907         bool pf_mdd_detected = false;
6908         struct i40e_vf *vf;
6909         u32 reg;
6910         int i;
6911
6912         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6913                 return;
6914
6915         /* find what triggered the MDD event */
6916         reg = rd32(hw, I40E_GL_MDET_TX);
6917         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6918                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6919                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6920                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6921                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6922                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6923                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6924                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6925                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6926                                 pf->hw.func_caps.base_queue;
6927                 if (netif_msg_tx_err(pf))
6928                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6929                                  event, queue, pf_num, vf_num);
6930                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6931                 mdd_detected = true;
6932         }
6933         reg = rd32(hw, I40E_GL_MDET_RX);
6934         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6935                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6936                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6937                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6938                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6939                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6940                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6941                                 pf->hw.func_caps.base_queue;
6942                 if (netif_msg_rx_err(pf))
6943                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6944                                  event, queue, func);
6945                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6946                 mdd_detected = true;
6947         }
6948
6949         if (mdd_detected) {
6950                 reg = rd32(hw, I40E_PF_MDET_TX);
6951                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6952                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6953                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6954                         pf_mdd_detected = true;
6955                 }
6956                 reg = rd32(hw, I40E_PF_MDET_RX);
6957                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6958                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6959                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6960                         pf_mdd_detected = true;
6961                 }
6962                 /* Queue belongs to the PF, initiate a reset */
6963                 if (pf_mdd_detected) {
6964                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6965                         i40e_service_event_schedule(pf);
6966                 }
6967         }
6968
6969         /* see if one of the VFs needs its hand slapped */
6970         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6971                 vf = &(pf->vf[i]);
6972                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6973                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6974                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6975                         vf->num_mdd_events++;
6976                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6977                                  i);
6978                 }
6979
6980                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6981                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6982                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6983                         vf->num_mdd_events++;
6984                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6985                                  i);
6986                 }
6987
6988                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6989                         dev_info(&pf->pdev->dev,
6990                                  "Too many MDD events on VF %d, disabled\n", i);
6991                         dev_info(&pf->pdev->dev,
6992                                  "Use PF Control I/F to re-enable the VF\n");
6993                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6994                 }
6995         }
6996
6997         /* re-enable mdd interrupt cause */
6998         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6999         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7000         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7001         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7002         i40e_flush(hw);
7003 }
7004
7005 #ifdef CONFIG_I40E_VXLAN
7006 /**
7007  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7008  * @pf: board private structure
7009  **/
7010 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7011 {
7012         struct i40e_hw *hw = &pf->hw;
7013         i40e_status ret;
7014         __be16 port;
7015         int i;
7016
7017         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7018                 return;
7019
7020         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7021
7022         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7023                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7024                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7025                         port = pf->vxlan_ports[i];
7026                         if (port)
7027                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7028                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7029                                                      NULL, NULL);
7030                         else
7031                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7032
7033                         if (ret) {
7034                                 dev_info(&pf->pdev->dev,
7035                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7036                                          port ? "add" : "delete",
7037                                          ntohs(port), i,
7038                                          i40e_stat_str(&pf->hw, ret),
7039                                          i40e_aq_str(&pf->hw,
7040                                                     pf->hw.aq.asq_last_status));
7041                                 pf->vxlan_ports[i] = 0;
7042                         }
7043                 }
7044         }
7045 }
7046
7047 #endif
7048 /**
7049  * i40e_service_task - Run the driver's async subtasks
7050  * @work: pointer to work_struct containing our data
7051  **/
7052 static void i40e_service_task(struct work_struct *work)
7053 {
7054         struct i40e_pf *pf = container_of(work,
7055                                           struct i40e_pf,
7056                                           service_task);
7057         unsigned long start_time = jiffies;
7058
7059         /* don't bother with service tasks if a reset is in progress */
7060         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7061                 i40e_service_event_complete(pf);
7062                 return;
7063         }
7064
7065         i40e_detect_recover_hung(pf);
7066         i40e_reset_subtask(pf);
7067         i40e_handle_mdd_event(pf);
7068         i40e_vc_process_vflr_event(pf);
7069         i40e_watchdog_subtask(pf);
7070         i40e_fdir_reinit_subtask(pf);
7071         i40e_sync_filters_subtask(pf);
7072 #ifdef CONFIG_I40E_VXLAN
7073         i40e_sync_vxlan_filters_subtask(pf);
7074 #endif
7075         i40e_clean_adminq_subtask(pf);
7076
7077         i40e_service_event_complete(pf);
7078
7079         /* If the tasks have taken longer than one timer cycle or there
7080          * is more work to be done, reschedule the service task now
7081          * rather than wait for the timer to tick again.
7082          */
7083         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7084             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7085             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7086             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7087                 i40e_service_event_schedule(pf);
7088 }
7089
7090 /**
7091  * i40e_service_timer - timer callback
7092  * @data: pointer to PF struct
7093  **/
7094 static void i40e_service_timer(unsigned long data)
7095 {
7096         struct i40e_pf *pf = (struct i40e_pf *)data;
7097
7098         mod_timer(&pf->service_timer,
7099                   round_jiffies(jiffies + pf->service_timer_period));
7100         i40e_service_event_schedule(pf);
7101 }
7102
7103 /**
7104  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7105  * @vsi: the VSI being configured
7106  **/
7107 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7108 {
7109         struct i40e_pf *pf = vsi->back;
7110
7111         switch (vsi->type) {
7112         case I40E_VSI_MAIN:
7113                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7114                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7115                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7116                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7117                         vsi->num_q_vectors = pf->num_lan_msix;
7118                 else
7119                         vsi->num_q_vectors = 1;
7120
7121                 break;
7122
7123         case I40E_VSI_FDIR:
7124                 vsi->alloc_queue_pairs = 1;
7125                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7126                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7127                 vsi->num_q_vectors = 1;
7128                 break;
7129
7130         case I40E_VSI_VMDQ2:
7131                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7132                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7133                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7134                 vsi->num_q_vectors = pf->num_vmdq_msix;
7135                 break;
7136
7137         case I40E_VSI_SRIOV:
7138                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7139                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7140                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7141                 break;
7142
7143 #ifdef I40E_FCOE
7144         case I40E_VSI_FCOE:
7145                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7146                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7147                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7148                 vsi->num_q_vectors = pf->num_fcoe_msix;
7149                 break;
7150
7151 #endif /* I40E_FCOE */
7152         default:
7153                 WARN_ON(1);
7154                 return -ENODATA;
7155         }
7156
7157         return 0;
7158 }
7159
7160 /**
7161  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7162  * @type: VSI pointer
7163  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7164  *
7165  * On error: returns error code (negative)
7166  * On success: returns 0
7167  **/
7168 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7169 {
7170         int size;
7171         int ret = 0;
7172
7173         /* allocate memory for both Tx and Rx ring pointers */
7174         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7175         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7176         if (!vsi->tx_rings)
7177                 return -ENOMEM;
7178         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7179
7180         if (alloc_qvectors) {
7181                 /* allocate memory for q_vector pointers */
7182                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7183                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7184                 if (!vsi->q_vectors) {
7185                         ret = -ENOMEM;
7186                         goto err_vectors;
7187                 }
7188         }
7189         return ret;
7190
7191 err_vectors:
7192         kfree(vsi->tx_rings);
7193         return ret;
7194 }
7195
7196 /**
7197  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7198  * @pf: board private structure
7199  * @type: type of VSI
7200  *
7201  * On error: returns error code (negative)
7202  * On success: returns vsi index in PF (positive)
7203  **/
7204 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7205 {
7206         int ret = -ENODEV;
7207         struct i40e_vsi *vsi;
7208         int vsi_idx;
7209         int i;
7210
7211         /* Need to protect the allocation of the VSIs at the PF level */
7212         mutex_lock(&pf->switch_mutex);
7213
7214         /* VSI list may be fragmented if VSI creation/destruction has
7215          * been happening.  We can afford to do a quick scan to look
7216          * for any free VSIs in the list.
7217          *
7218          * find next empty vsi slot, looping back around if necessary
7219          */
7220         i = pf->next_vsi;
7221         while (i < pf->num_alloc_vsi && pf->vsi[i])
7222                 i++;
7223         if (i >= pf->num_alloc_vsi) {
7224                 i = 0;
7225                 while (i < pf->next_vsi && pf->vsi[i])
7226                         i++;
7227         }
7228
7229         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7230                 vsi_idx = i;             /* Found one! */
7231         } else {
7232                 ret = -ENODEV;
7233                 goto unlock_pf;  /* out of VSI slots! */
7234         }
7235         pf->next_vsi = ++i;
7236
7237         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7238         if (!vsi) {
7239                 ret = -ENOMEM;
7240                 goto unlock_pf;
7241         }
7242         vsi->type = type;
7243         vsi->back = pf;
7244         set_bit(__I40E_DOWN, &vsi->state);
7245         vsi->flags = 0;
7246         vsi->idx = vsi_idx;
7247         vsi->rx_itr_setting = pf->rx_itr_default;
7248         vsi->tx_itr_setting = pf->tx_itr_default;
7249         vsi->int_rate_limit = 0;
7250         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7251                                 pf->rss_table_size : 64;
7252         vsi->netdev_registered = false;
7253         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7254         INIT_LIST_HEAD(&vsi->mac_filter_list);
7255         vsi->irqs_ready = false;
7256
7257         ret = i40e_set_num_rings_in_vsi(vsi);
7258         if (ret)
7259                 goto err_rings;
7260
7261         ret = i40e_vsi_alloc_arrays(vsi, true);
7262         if (ret)
7263                 goto err_rings;
7264
7265         /* Setup default MSIX irq handler for VSI */
7266         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7267
7268         /* Initialize VSI lock */
7269         spin_lock_init(&vsi->mac_filter_list_lock);
7270         pf->vsi[vsi_idx] = vsi;
7271         ret = vsi_idx;
7272         goto unlock_pf;
7273
7274 err_rings:
7275         pf->next_vsi = i - 1;
7276         kfree(vsi);
7277 unlock_pf:
7278         mutex_unlock(&pf->switch_mutex);
7279         return ret;
7280 }
7281
7282 /**
7283  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7284  * @type: VSI pointer
7285  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7286  *
7287  * On error: returns error code (negative)
7288  * On success: returns 0
7289  **/
7290 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7291 {
7292         /* free the ring and vector containers */
7293         if (free_qvectors) {
7294                 kfree(vsi->q_vectors);
7295                 vsi->q_vectors = NULL;
7296         }
7297         kfree(vsi->tx_rings);
7298         vsi->tx_rings = NULL;
7299         vsi->rx_rings = NULL;
7300 }
7301
7302 /**
7303  * i40e_vsi_clear - Deallocate the VSI provided
7304  * @vsi: the VSI being un-configured
7305  **/
7306 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7307 {
7308         struct i40e_pf *pf;
7309
7310         if (!vsi)
7311                 return 0;
7312
7313         if (!vsi->back)
7314                 goto free_vsi;
7315         pf = vsi->back;
7316
7317         mutex_lock(&pf->switch_mutex);
7318         if (!pf->vsi[vsi->idx]) {
7319                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7320                         vsi->idx, vsi->idx, vsi, vsi->type);
7321                 goto unlock_vsi;
7322         }
7323
7324         if (pf->vsi[vsi->idx] != vsi) {
7325                 dev_err(&pf->pdev->dev,
7326                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7327                         pf->vsi[vsi->idx]->idx,
7328                         pf->vsi[vsi->idx],
7329                         pf->vsi[vsi->idx]->type,
7330                         vsi->idx, vsi, vsi->type);
7331                 goto unlock_vsi;
7332         }
7333
7334         /* updates the PF for this cleared vsi */
7335         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7336         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7337
7338         i40e_vsi_free_arrays(vsi, true);
7339
7340         pf->vsi[vsi->idx] = NULL;
7341         if (vsi->idx < pf->next_vsi)
7342                 pf->next_vsi = vsi->idx;
7343
7344 unlock_vsi:
7345         mutex_unlock(&pf->switch_mutex);
7346 free_vsi:
7347         kfree(vsi);
7348
7349         return 0;
7350 }
7351
7352 /**
7353  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7354  * @vsi: the VSI being cleaned
7355  **/
7356 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7357 {
7358         int i;
7359
7360         if (vsi->tx_rings && vsi->tx_rings[0]) {
7361                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7362                         kfree_rcu(vsi->tx_rings[i], rcu);
7363                         vsi->tx_rings[i] = NULL;
7364                         vsi->rx_rings[i] = NULL;
7365                 }
7366         }
7367 }
7368
7369 /**
7370  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7371  * @vsi: the VSI being configured
7372  **/
7373 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7374 {
7375         struct i40e_ring *tx_ring, *rx_ring;
7376         struct i40e_pf *pf = vsi->back;
7377         int i;
7378
7379         /* Set basic values in the rings to be used later during open() */
7380         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7381                 /* allocate space for both Tx and Rx in one shot */
7382                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7383                 if (!tx_ring)
7384                         goto err_out;
7385
7386                 tx_ring->queue_index = i;
7387                 tx_ring->reg_idx = vsi->base_queue + i;
7388                 tx_ring->ring_active = false;
7389                 tx_ring->vsi = vsi;
7390                 tx_ring->netdev = vsi->netdev;
7391                 tx_ring->dev = &pf->pdev->dev;
7392                 tx_ring->count = vsi->num_desc;
7393                 tx_ring->size = 0;
7394                 tx_ring->dcb_tc = 0;
7395                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7396                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7397                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7398                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7399                 vsi->tx_rings[i] = tx_ring;
7400
7401                 rx_ring = &tx_ring[1];
7402                 rx_ring->queue_index = i;
7403                 rx_ring->reg_idx = vsi->base_queue + i;
7404                 rx_ring->ring_active = false;
7405                 rx_ring->vsi = vsi;
7406                 rx_ring->netdev = vsi->netdev;
7407                 rx_ring->dev = &pf->pdev->dev;
7408                 rx_ring->count = vsi->num_desc;
7409                 rx_ring->size = 0;
7410                 rx_ring->dcb_tc = 0;
7411                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7412                         set_ring_16byte_desc_enabled(rx_ring);
7413                 else
7414                         clear_ring_16byte_desc_enabled(rx_ring);
7415                 vsi->rx_rings[i] = rx_ring;
7416         }
7417
7418         return 0;
7419
7420 err_out:
7421         i40e_vsi_clear_rings(vsi);
7422         return -ENOMEM;
7423 }
7424
7425 /**
7426  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7427  * @pf: board private structure
7428  * @vectors: the number of MSI-X vectors to request
7429  *
7430  * Returns the number of vectors reserved, or error
7431  **/
7432 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7433 {
7434         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7435                                         I40E_MIN_MSIX, vectors);
7436         if (vectors < 0) {
7437                 dev_info(&pf->pdev->dev,
7438                          "MSI-X vector reservation failed: %d\n", vectors);
7439                 vectors = 0;
7440         }
7441
7442         return vectors;
7443 }
7444
7445 /**
7446  * i40e_init_msix - Setup the MSIX capability
7447  * @pf: board private structure
7448  *
7449  * Work with the OS to set up the MSIX vectors needed.
7450  *
7451  * Returns the number of vectors reserved or negative on failure
7452  **/
7453 static int i40e_init_msix(struct i40e_pf *pf)
7454 {
7455         struct i40e_hw *hw = &pf->hw;
7456         int vectors_left;
7457         int v_budget, i;
7458         int v_actual;
7459
7460         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7461                 return -ENODEV;
7462
7463         /* The number of vectors we'll request will be comprised of:
7464          *   - Add 1 for "other" cause for Admin Queue events, etc.
7465          *   - The number of LAN queue pairs
7466          *      - Queues being used for RSS.
7467          *              We don't need as many as max_rss_size vectors.
7468          *              use rss_size instead in the calculation since that
7469          *              is governed by number of cpus in the system.
7470          *      - assumes symmetric Tx/Rx pairing
7471          *   - The number of VMDq pairs
7472 #ifdef I40E_FCOE
7473          *   - The number of FCOE qps.
7474 #endif
7475          * Once we count this up, try the request.
7476          *
7477          * If we can't get what we want, we'll simplify to nearly nothing
7478          * and try again.  If that still fails, we punt.
7479          */
7480         vectors_left = hw->func_caps.num_msix_vectors;
7481         v_budget = 0;
7482
7483         /* reserve one vector for miscellaneous handler */
7484         if (vectors_left) {
7485                 v_budget++;
7486                 vectors_left--;
7487         }
7488
7489         /* reserve vectors for the main PF traffic queues */
7490         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7491         vectors_left -= pf->num_lan_msix;
7492         v_budget += pf->num_lan_msix;
7493
7494         /* reserve one vector for sideband flow director */
7495         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7496                 if (vectors_left) {
7497                         v_budget++;
7498                         vectors_left--;
7499                 } else {
7500                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7501                 }
7502         }
7503
7504 #ifdef I40E_FCOE
7505         /* can we reserve enough for FCoE? */
7506         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7507                 if (!vectors_left)
7508                         pf->num_fcoe_msix = 0;
7509                 else if (vectors_left >= pf->num_fcoe_qps)
7510                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7511                 else
7512                         pf->num_fcoe_msix = 1;
7513                 v_budget += pf->num_fcoe_msix;
7514                 vectors_left -= pf->num_fcoe_msix;
7515         }
7516
7517 #endif
7518         /* any vectors left over go for VMDq support */
7519         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7520                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7521                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7522
7523                 /* if we're short on vectors for what's desired, we limit
7524                  * the queues per vmdq.  If this is still more than are
7525                  * available, the user will need to change the number of
7526                  * queues/vectors used by the PF later with the ethtool
7527                  * channels command
7528                  */
7529                 if (vmdq_vecs < vmdq_vecs_wanted)
7530                         pf->num_vmdq_qps = 1;
7531                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7532
7533                 v_budget += vmdq_vecs;
7534                 vectors_left -= vmdq_vecs;
7535         }
7536
7537         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7538                                    GFP_KERNEL);
7539         if (!pf->msix_entries)
7540                 return -ENOMEM;
7541
7542         for (i = 0; i < v_budget; i++)
7543                 pf->msix_entries[i].entry = i;
7544         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7545
7546         if (v_actual != v_budget) {
7547                 /* If we have limited resources, we will start with no vectors
7548                  * for the special features and then allocate vectors to some
7549                  * of these features based on the policy and at the end disable
7550                  * the features that did not get any vectors.
7551                  */
7552 #ifdef I40E_FCOE
7553                 pf->num_fcoe_qps = 0;
7554                 pf->num_fcoe_msix = 0;
7555 #endif
7556                 pf->num_vmdq_msix = 0;
7557         }
7558
7559         if (v_actual < I40E_MIN_MSIX) {
7560                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7561                 kfree(pf->msix_entries);
7562                 pf->msix_entries = NULL;
7563                 return -ENODEV;
7564
7565         } else if (v_actual == I40E_MIN_MSIX) {
7566                 /* Adjust for minimal MSIX use */
7567                 pf->num_vmdq_vsis = 0;
7568                 pf->num_vmdq_qps = 0;
7569                 pf->num_lan_qps = 1;
7570                 pf->num_lan_msix = 1;
7571
7572         } else if (v_actual != v_budget) {
7573                 int vec;
7574
7575                 /* reserve the misc vector */
7576                 vec = v_actual - 1;
7577
7578                 /* Scale vector usage down */
7579                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7580                 pf->num_vmdq_vsis = 1;
7581                 pf->num_vmdq_qps = 1;
7582                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7583
7584                 /* partition out the remaining vectors */
7585                 switch (vec) {
7586                 case 2:
7587                         pf->num_lan_msix = 1;
7588                         break;
7589                 case 3:
7590 #ifdef I40E_FCOE
7591                         /* give one vector to FCoE */
7592                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7593                                 pf->num_lan_msix = 1;
7594                                 pf->num_fcoe_msix = 1;
7595                         }
7596 #else
7597                         pf->num_lan_msix = 2;
7598 #endif
7599                         break;
7600                 default:
7601 #ifdef I40E_FCOE
7602                         /* give one vector to FCoE */
7603                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7604                                 pf->num_fcoe_msix = 1;
7605                                 vec--;
7606                         }
7607 #endif
7608                         /* give the rest to the PF */
7609                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7610                         break;
7611                 }
7612         }
7613
7614         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7615             (pf->num_vmdq_msix == 0)) {
7616                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7617                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7618         }
7619 #ifdef I40E_FCOE
7620
7621         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7622                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7623                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7624         }
7625 #endif
7626         return v_actual;
7627 }
7628
7629 /**
7630  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7631  * @vsi: the VSI being configured
7632  * @v_idx: index of the vector in the vsi struct
7633  *
7634  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7635  **/
7636 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7637 {
7638         struct i40e_q_vector *q_vector;
7639
7640         /* allocate q_vector */
7641         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7642         if (!q_vector)
7643                 return -ENOMEM;
7644
7645         q_vector->vsi = vsi;
7646         q_vector->v_idx = v_idx;
7647         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7648         if (vsi->netdev)
7649                 netif_napi_add(vsi->netdev, &q_vector->napi,
7650                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7651
7652         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7653         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7654
7655         /* tie q_vector and vsi together */
7656         vsi->q_vectors[v_idx] = q_vector;
7657
7658         return 0;
7659 }
7660
7661 /**
7662  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7663  * @vsi: the VSI being configured
7664  *
7665  * We allocate one q_vector per queue interrupt.  If allocation fails we
7666  * return -ENOMEM.
7667  **/
7668 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7669 {
7670         struct i40e_pf *pf = vsi->back;
7671         int v_idx, num_q_vectors;
7672         int err;
7673
7674         /* if not MSIX, give the one vector only to the LAN VSI */
7675         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7676                 num_q_vectors = vsi->num_q_vectors;
7677         else if (vsi == pf->vsi[pf->lan_vsi])
7678                 num_q_vectors = 1;
7679         else
7680                 return -EINVAL;
7681
7682         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7683                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7684                 if (err)
7685                         goto err_out;
7686         }
7687
7688         return 0;
7689
7690 err_out:
7691         while (v_idx--)
7692                 i40e_free_q_vector(vsi, v_idx);
7693
7694         return err;
7695 }
7696
7697 /**
7698  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7699  * @pf: board private structure to initialize
7700  **/
7701 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7702 {
7703         int vectors = 0;
7704         ssize_t size;
7705
7706         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7707                 vectors = i40e_init_msix(pf);
7708                 if (vectors < 0) {
7709                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7710 #ifdef I40E_FCOE
7711                                        I40E_FLAG_FCOE_ENABLED   |
7712 #endif
7713                                        I40E_FLAG_RSS_ENABLED    |
7714                                        I40E_FLAG_DCB_CAPABLE    |
7715                                        I40E_FLAG_SRIOV_ENABLED  |
7716                                        I40E_FLAG_FD_SB_ENABLED  |
7717                                        I40E_FLAG_FD_ATR_ENABLED |
7718                                        I40E_FLAG_VMDQ_ENABLED);
7719
7720                         /* rework the queue expectations without MSIX */
7721                         i40e_determine_queue_usage(pf);
7722                 }
7723         }
7724
7725         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7726             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7727                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7728                 vectors = pci_enable_msi(pf->pdev);
7729                 if (vectors < 0) {
7730                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7731                                  vectors);
7732                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7733                 }
7734                 vectors = 1;  /* one MSI or Legacy vector */
7735         }
7736
7737         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7738                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7739
7740         /* set up vector assignment tracking */
7741         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7742         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7743         if (!pf->irq_pile) {
7744                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7745                 return -ENOMEM;
7746         }
7747         pf->irq_pile->num_entries = vectors;
7748         pf->irq_pile->search_hint = 0;
7749
7750         /* track first vector for misc interrupts, ignore return */
7751         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7752
7753         return 0;
7754 }
7755
7756 /**
7757  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7758  * @pf: board private structure
7759  *
7760  * This sets up the handler for MSIX 0, which is used to manage the
7761  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7762  * when in MSI or Legacy interrupt mode.
7763  **/
7764 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7765 {
7766         struct i40e_hw *hw = &pf->hw;
7767         int err = 0;
7768
7769         /* Only request the irq if this is the first time through, and
7770          * not when we're rebuilding after a Reset
7771          */
7772         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7773                 err = request_irq(pf->msix_entries[0].vector,
7774                                   i40e_intr, 0, pf->int_name, pf);
7775                 if (err) {
7776                         dev_info(&pf->pdev->dev,
7777                                  "request_irq for %s failed: %d\n",
7778                                  pf->int_name, err);
7779                         return -EFAULT;
7780                 }
7781         }
7782
7783         i40e_enable_misc_int_causes(pf);
7784
7785         /* associate no queues to the misc vector */
7786         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7787         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7788
7789         i40e_flush(hw);
7790
7791         i40e_irq_dynamic_enable_icr0(pf);
7792
7793         return err;
7794 }
7795
7796 /**
7797  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7798  * @vsi: vsi structure
7799  * @seed: RSS hash seed
7800  **/
7801 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7802 {
7803         struct i40e_aqc_get_set_rss_key_data rss_key;
7804         struct i40e_pf *pf = vsi->back;
7805         struct i40e_hw *hw = &pf->hw;
7806         bool pf_lut = false;
7807         u8 *rss_lut;
7808         int ret, i;
7809
7810         memset(&rss_key, 0, sizeof(rss_key));
7811         memcpy(&rss_key, seed, sizeof(rss_key));
7812
7813         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7814         if (!rss_lut)
7815                 return -ENOMEM;
7816
7817         /* Populate the LUT with max no. of queues in round robin fashion */
7818         for (i = 0; i < vsi->rss_table_size; i++)
7819                 rss_lut[i] = i % vsi->rss_size;
7820
7821         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7822         if (ret) {
7823                 dev_info(&pf->pdev->dev,
7824                          "Cannot set RSS key, err %s aq_err %s\n",
7825                          i40e_stat_str(&pf->hw, ret),
7826                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7827                 goto config_rss_aq_out;
7828         }
7829
7830         if (vsi->type == I40E_VSI_MAIN)
7831                 pf_lut = true;
7832
7833         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7834                                   vsi->rss_table_size);
7835         if (ret)
7836                 dev_info(&pf->pdev->dev,
7837                          "Cannot set RSS lut, err %s aq_err %s\n",
7838                          i40e_stat_str(&pf->hw, ret),
7839                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7840
7841 config_rss_aq_out:
7842         kfree(rss_lut);
7843         return ret;
7844 }
7845
7846 /**
7847  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7848  * @vsi: VSI structure
7849  **/
7850 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7851 {
7852         u8 seed[I40E_HKEY_ARRAY_SIZE];
7853         struct i40e_pf *pf = vsi->back;
7854
7855         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7856         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7857
7858         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7859                 return i40e_config_rss_aq(vsi, seed);
7860
7861         return 0;
7862 }
7863
7864 /**
7865  * i40e_config_rss_reg - Prepare for RSS if used
7866  * @pf: board private structure
7867  * @seed: RSS hash seed
7868  **/
7869 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7870 {
7871         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7872         struct i40e_hw *hw = &pf->hw;
7873         u32 *seed_dw = (u32 *)seed;
7874         u32 current_queue = 0;
7875         u32 lut = 0;
7876         int i, j;
7877
7878         /* Fill out hash function seed */
7879         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7880                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7881
7882         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7883                 lut = 0;
7884                 for (j = 0; j < 4; j++) {
7885                         if (current_queue == vsi->rss_size)
7886                                 current_queue = 0;
7887                         lut |= ((current_queue) << (8 * j));
7888                         current_queue++;
7889                 }
7890                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7891         }
7892         i40e_flush(hw);
7893
7894         return 0;
7895 }
7896
7897 /**
7898  * i40e_config_rss - Prepare for RSS if used
7899  * @pf: board private structure
7900  **/
7901 static int i40e_config_rss(struct i40e_pf *pf)
7902 {
7903         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7904         u8 seed[I40E_HKEY_ARRAY_SIZE];
7905         struct i40e_hw *hw = &pf->hw;
7906         u32 reg_val;
7907         u64 hena;
7908
7909         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7910
7911         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7912         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7913                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7914         hena |= i40e_pf_get_default_rss_hena(pf);
7915
7916         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7917         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7918
7919         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7920
7921         /* Determine the RSS table size based on the hardware capabilities */
7922         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7923         reg_val = (pf->rss_table_size == 512) ?
7924                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7925                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7926         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7927
7928         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7929                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7930         else
7931                 return i40e_config_rss_reg(pf, seed);
7932 }
7933
7934 /**
7935  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7936  * @pf: board private structure
7937  * @queue_count: the requested queue count for rss.
7938  *
7939  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7940  * count which may be different from the requested queue count.
7941  **/
7942 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7943 {
7944         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7945         int new_rss_size;
7946
7947         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7948                 return 0;
7949
7950         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7951
7952         if (queue_count != vsi->num_queue_pairs) {
7953                 vsi->req_queue_pairs = queue_count;
7954                 i40e_prep_for_reset(pf);
7955
7956                 pf->rss_size = new_rss_size;
7957
7958                 i40e_reset_and_rebuild(pf, true);
7959                 i40e_config_rss(pf);
7960         }
7961         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7962         return pf->rss_size;
7963 }
7964
7965 /**
7966  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7967  * @pf: board private structure
7968  **/
7969 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7970 {
7971         i40e_status status;
7972         bool min_valid, max_valid;
7973         u32 max_bw, min_bw;
7974
7975         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7976                                            &min_valid, &max_valid);
7977
7978         if (!status) {
7979                 if (min_valid)
7980                         pf->npar_min_bw = min_bw;
7981                 if (max_valid)
7982                         pf->npar_max_bw = max_bw;
7983         }
7984
7985         return status;
7986 }
7987
7988 /**
7989  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7990  * @pf: board private structure
7991  **/
7992 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7993 {
7994         struct i40e_aqc_configure_partition_bw_data bw_data;
7995         i40e_status status;
7996
7997         /* Set the valid bit for this PF */
7998         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7999         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8000         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8001
8002         /* Set the new bandwidths */
8003         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8004
8005         return status;
8006 }
8007
8008 /**
8009  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8010  * @pf: board private structure
8011  **/
8012 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8013 {
8014         /* Commit temporary BW setting to permanent NVM image */
8015         enum i40e_admin_queue_err last_aq_status;
8016         i40e_status ret;
8017         u16 nvm_word;
8018
8019         if (pf->hw.partition_id != 1) {
8020                 dev_info(&pf->pdev->dev,
8021                          "Commit BW only works on partition 1! This is partition %d",
8022                          pf->hw.partition_id);
8023                 ret = I40E_NOT_SUPPORTED;
8024                 goto bw_commit_out;
8025         }
8026
8027         /* Acquire NVM for read access */
8028         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8029         last_aq_status = pf->hw.aq.asq_last_status;
8030         if (ret) {
8031                 dev_info(&pf->pdev->dev,
8032                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8033                          i40e_stat_str(&pf->hw, ret),
8034                          i40e_aq_str(&pf->hw, last_aq_status));
8035                 goto bw_commit_out;
8036         }
8037
8038         /* Read word 0x10 of NVM - SW compatibility word 1 */
8039         ret = i40e_aq_read_nvm(&pf->hw,
8040                                I40E_SR_NVM_CONTROL_WORD,
8041                                0x10, sizeof(nvm_word), &nvm_word,
8042                                false, NULL);
8043         /* Save off last admin queue command status before releasing
8044          * the NVM
8045          */
8046         last_aq_status = pf->hw.aq.asq_last_status;
8047         i40e_release_nvm(&pf->hw);
8048         if (ret) {
8049                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8050                          i40e_stat_str(&pf->hw, ret),
8051                          i40e_aq_str(&pf->hw, last_aq_status));
8052                 goto bw_commit_out;
8053         }
8054
8055         /* Wait a bit for NVM release to complete */
8056         msleep(50);
8057
8058         /* Acquire NVM for write access */
8059         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8060         last_aq_status = pf->hw.aq.asq_last_status;
8061         if (ret) {
8062                 dev_info(&pf->pdev->dev,
8063                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8064                          i40e_stat_str(&pf->hw, ret),
8065                          i40e_aq_str(&pf->hw, last_aq_status));
8066                 goto bw_commit_out;
8067         }
8068         /* Write it back out unchanged to initiate update NVM,
8069          * which will force a write of the shadow (alt) RAM to
8070          * the NVM - thus storing the bandwidth values permanently.
8071          */
8072         ret = i40e_aq_update_nvm(&pf->hw,
8073                                  I40E_SR_NVM_CONTROL_WORD,
8074                                  0x10, sizeof(nvm_word),
8075                                  &nvm_word, true, NULL);
8076         /* Save off last admin queue command status before releasing
8077          * the NVM
8078          */
8079         last_aq_status = pf->hw.aq.asq_last_status;
8080         i40e_release_nvm(&pf->hw);
8081         if (ret)
8082                 dev_info(&pf->pdev->dev,
8083                          "BW settings NOT SAVED, err %s aq_err %s\n",
8084                          i40e_stat_str(&pf->hw, ret),
8085                          i40e_aq_str(&pf->hw, last_aq_status));
8086 bw_commit_out:
8087
8088         return ret;
8089 }
8090
8091 /**
8092  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8093  * @pf: board private structure to initialize
8094  *
8095  * i40e_sw_init initializes the Adapter private data structure.
8096  * Fields are initialized based on PCI device information and
8097  * OS network device settings (MTU size).
8098  **/
8099 static int i40e_sw_init(struct i40e_pf *pf)
8100 {
8101         int err = 0;
8102         int size;
8103
8104         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8105                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8106         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8107         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8108                 if (I40E_DEBUG_USER & debug)
8109                         pf->hw.debug_mask = debug;
8110                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8111                                                 I40E_DEFAULT_MSG_ENABLE);
8112         }
8113
8114         /* Set default capability flags */
8115         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8116                     I40E_FLAG_MSI_ENABLED     |
8117                     I40E_FLAG_LINK_POLLING_ENABLED |
8118                     I40E_FLAG_MSIX_ENABLED;
8119
8120         if (iommu_present(&pci_bus_type))
8121                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8122         else
8123                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8124
8125         /* Set default ITR */
8126         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8127         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8128
8129         /* Depending on PF configurations, it is possible that the RSS
8130          * maximum might end up larger than the available queues
8131          */
8132         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8133         pf->rss_size = 1;
8134         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8135         pf->rss_size_max = min_t(int, pf->rss_size_max,
8136                                  pf->hw.func_caps.num_tx_qp);
8137         if (pf->hw.func_caps.rss) {
8138                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8139                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
8140         }
8141
8142         /* MFP mode enabled */
8143         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8144                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8145                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8146                 if (i40e_get_npar_bw_setting(pf))
8147                         dev_warn(&pf->pdev->dev,
8148                                  "Could not get NPAR bw settings\n");
8149                 else
8150                         dev_info(&pf->pdev->dev,
8151                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8152                                  pf->npar_min_bw, pf->npar_max_bw);
8153         }
8154
8155         /* FW/NVM is not yet fixed in this regard */
8156         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8157             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8158                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8159                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8160                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8161                     pf->hw.num_partitions > 1)
8162                         dev_info(&pf->pdev->dev,
8163                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8164                 else
8165                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8166                 pf->fdir_pf_filter_count =
8167                                  pf->hw.func_caps.fd_filters_guaranteed;
8168                 pf->hw.fdir_shared_filter_count =
8169                                  pf->hw.func_caps.fd_filters_best_effort;
8170         }
8171
8172         if (pf->hw.func_caps.vmdq) {
8173                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8174                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8175                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8176         }
8177
8178 #ifdef I40E_FCOE
8179         i40e_init_pf_fcoe(pf);
8180
8181 #endif /* I40E_FCOE */
8182 #ifdef CONFIG_PCI_IOV
8183         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8184                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8185                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8186                 pf->num_req_vfs = min_t(int,
8187                                         pf->hw.func_caps.num_vfs,
8188                                         I40E_MAX_VF_COUNT);
8189         }
8190 #endif /* CONFIG_PCI_IOV */
8191         if (pf->hw.mac.type == I40E_MAC_X722) {
8192                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8193                              I40E_FLAG_128_QP_RSS_CAPABLE |
8194                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8195                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8196                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8197                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8198         }
8199         pf->eeprom_version = 0xDEAD;
8200         pf->lan_veb = I40E_NO_VEB;
8201         pf->lan_vsi = I40E_NO_VSI;
8202
8203         /* By default FW has this off for performance reasons */
8204         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8205
8206         /* set up queue assignment tracking */
8207         size = sizeof(struct i40e_lump_tracking)
8208                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8209         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8210         if (!pf->qp_pile) {
8211                 err = -ENOMEM;
8212                 goto sw_init_done;
8213         }
8214         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8215         pf->qp_pile->search_hint = 0;
8216
8217         pf->tx_timeout_recovery_level = 1;
8218
8219         mutex_init(&pf->switch_mutex);
8220
8221         /* If NPAR is enabled nudge the Tx scheduler */
8222         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8223                 i40e_set_npar_bw_setting(pf);
8224
8225 sw_init_done:
8226         return err;
8227 }
8228
8229 /**
8230  * i40e_set_ntuple - set the ntuple feature flag and take action
8231  * @pf: board private structure to initialize
8232  * @features: the feature set that the stack is suggesting
8233  *
8234  * returns a bool to indicate if reset needs to happen
8235  **/
8236 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8237 {
8238         bool need_reset = false;
8239
8240         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8241          * the state changed, we need to reset.
8242          */
8243         if (features & NETIF_F_NTUPLE) {
8244                 /* Enable filters and mark for reset */
8245                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8246                         need_reset = true;
8247                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8248         } else {
8249                 /* turn off filters, mark for reset and clear SW filter list */
8250                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8251                         need_reset = true;
8252                         i40e_fdir_filter_exit(pf);
8253                 }
8254                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8255                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8256                 /* reset fd counters */
8257                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8258                 pf->fdir_pf_active_filters = 0;
8259                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8260                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8261                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8262                 /* if ATR was auto disabled it can be re-enabled. */
8263                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8264                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8265                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8266         }
8267         return need_reset;
8268 }
8269
8270 /**
8271  * i40e_set_features - set the netdev feature flags
8272  * @netdev: ptr to the netdev being adjusted
8273  * @features: the feature set that the stack is suggesting
8274  **/
8275 static int i40e_set_features(struct net_device *netdev,
8276                              netdev_features_t features)
8277 {
8278         struct i40e_netdev_priv *np = netdev_priv(netdev);
8279         struct i40e_vsi *vsi = np->vsi;
8280         struct i40e_pf *pf = vsi->back;
8281         bool need_reset;
8282
8283         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8284                 i40e_vlan_stripping_enable(vsi);
8285         else
8286                 i40e_vlan_stripping_disable(vsi);
8287
8288         need_reset = i40e_set_ntuple(pf, features);
8289
8290         if (need_reset)
8291                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8292
8293         return 0;
8294 }
8295
8296 #ifdef CONFIG_I40E_VXLAN
8297 /**
8298  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8299  * @pf: board private structure
8300  * @port: The UDP port to look up
8301  *
8302  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8303  **/
8304 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8305 {
8306         u8 i;
8307
8308         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8309                 if (pf->vxlan_ports[i] == port)
8310                         return i;
8311         }
8312
8313         return i;
8314 }
8315
8316 /**
8317  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8318  * @netdev: This physical port's netdev
8319  * @sa_family: Socket Family that VXLAN is notifying us about
8320  * @port: New UDP port number that VXLAN started listening to
8321  **/
8322 static void i40e_add_vxlan_port(struct net_device *netdev,
8323                                 sa_family_t sa_family, __be16 port)
8324 {
8325         struct i40e_netdev_priv *np = netdev_priv(netdev);
8326         struct i40e_vsi *vsi = np->vsi;
8327         struct i40e_pf *pf = vsi->back;
8328         u8 next_idx;
8329         u8 idx;
8330
8331         if (sa_family == AF_INET6)
8332                 return;
8333
8334         idx = i40e_get_vxlan_port_idx(pf, port);
8335
8336         /* Check if port already exists */
8337         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8338                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8339                             ntohs(port));
8340                 return;
8341         }
8342
8343         /* Now check if there is space to add the new port */
8344         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8345
8346         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8347                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8348                             ntohs(port));
8349                 return;
8350         }
8351
8352         /* New port: add it and mark its index in the bitmap */
8353         pf->vxlan_ports[next_idx] = port;
8354         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8355         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8356 }
8357
8358 /**
8359  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8360  * @netdev: This physical port's netdev
8361  * @sa_family: Socket Family that VXLAN is notifying us about
8362  * @port: UDP port number that VXLAN stopped listening to
8363  **/
8364 static void i40e_del_vxlan_port(struct net_device *netdev,
8365                                 sa_family_t sa_family, __be16 port)
8366 {
8367         struct i40e_netdev_priv *np = netdev_priv(netdev);
8368         struct i40e_vsi *vsi = np->vsi;
8369         struct i40e_pf *pf = vsi->back;
8370         u8 idx;
8371
8372         if (sa_family == AF_INET6)
8373                 return;
8374
8375         idx = i40e_get_vxlan_port_idx(pf, port);
8376
8377         /* Check if port already exists */
8378         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8379                 /* if port exists, set it to 0 (mark for deletion)
8380                  * and make it pending
8381                  */
8382                 pf->vxlan_ports[idx] = 0;
8383                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8384                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8385         } else {
8386                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8387                             ntohs(port));
8388         }
8389 }
8390
8391 #endif
8392 static int i40e_get_phys_port_id(struct net_device *netdev,
8393                                  struct netdev_phys_item_id *ppid)
8394 {
8395         struct i40e_netdev_priv *np = netdev_priv(netdev);
8396         struct i40e_pf *pf = np->vsi->back;
8397         struct i40e_hw *hw = &pf->hw;
8398
8399         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8400                 return -EOPNOTSUPP;
8401
8402         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8403         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8404
8405         return 0;
8406 }
8407
8408 /**
8409  * i40e_ndo_fdb_add - add an entry to the hardware database
8410  * @ndm: the input from the stack
8411  * @tb: pointer to array of nladdr (unused)
8412  * @dev: the net device pointer
8413  * @addr: the MAC address entry being added
8414  * @flags: instructions from stack about fdb operation
8415  */
8416 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8417                             struct net_device *dev,
8418                             const unsigned char *addr, u16 vid,
8419                             u16 flags)
8420 {
8421         struct i40e_netdev_priv *np = netdev_priv(dev);
8422         struct i40e_pf *pf = np->vsi->back;
8423         int err = 0;
8424
8425         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8426                 return -EOPNOTSUPP;
8427
8428         if (vid) {
8429                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8430                 return -EINVAL;
8431         }
8432
8433         /* Hardware does not support aging addresses so if a
8434          * ndm_state is given only allow permanent addresses
8435          */
8436         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8437                 netdev_info(dev, "FDB only supports static addresses\n");
8438                 return -EINVAL;
8439         }
8440
8441         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8442                 err = dev_uc_add_excl(dev, addr);
8443         else if (is_multicast_ether_addr(addr))
8444                 err = dev_mc_add_excl(dev, addr);
8445         else
8446                 err = -EINVAL;
8447
8448         /* Only return duplicate errors if NLM_F_EXCL is set */
8449         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8450                 err = 0;
8451
8452         return err;
8453 }
8454
8455 /**
8456  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8457  * @dev: the netdev being configured
8458  * @nlh: RTNL message
8459  *
8460  * Inserts a new hardware bridge if not already created and
8461  * enables the bridging mode requested (VEB or VEPA). If the
8462  * hardware bridge has already been inserted and the request
8463  * is to change the mode then that requires a PF reset to
8464  * allow rebuild of the components with required hardware
8465  * bridge mode enabled.
8466  **/
8467 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8468                                    struct nlmsghdr *nlh,
8469                                    u16 flags)
8470 {
8471         struct i40e_netdev_priv *np = netdev_priv(dev);
8472         struct i40e_vsi *vsi = np->vsi;
8473         struct i40e_pf *pf = vsi->back;
8474         struct i40e_veb *veb = NULL;
8475         struct nlattr *attr, *br_spec;
8476         int i, rem;
8477
8478         /* Only for PF VSI for now */
8479         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8480                 return -EOPNOTSUPP;
8481
8482         /* Find the HW bridge for PF VSI */
8483         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8484                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8485                         veb = pf->veb[i];
8486         }
8487
8488         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8489
8490         nla_for_each_nested(attr, br_spec, rem) {
8491                 __u16 mode;
8492
8493                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8494                         continue;
8495
8496                 mode = nla_get_u16(attr);
8497                 if ((mode != BRIDGE_MODE_VEPA) &&
8498                     (mode != BRIDGE_MODE_VEB))
8499                         return -EINVAL;
8500
8501                 /* Insert a new HW bridge */
8502                 if (!veb) {
8503                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8504                                              vsi->tc_config.enabled_tc);
8505                         if (veb) {
8506                                 veb->bridge_mode = mode;
8507                                 i40e_config_bridge_mode(veb);
8508                         } else {
8509                                 /* No Bridge HW offload available */
8510                                 return -ENOENT;
8511                         }
8512                         break;
8513                 } else if (mode != veb->bridge_mode) {
8514                         /* Existing HW bridge but different mode needs reset */
8515                         veb->bridge_mode = mode;
8516                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8517                         if (mode == BRIDGE_MODE_VEB)
8518                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8519                         else
8520                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8521                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8522                         break;
8523                 }
8524         }
8525
8526         return 0;
8527 }
8528
8529 /**
8530  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8531  * @skb: skb buff
8532  * @pid: process id
8533  * @seq: RTNL message seq #
8534  * @dev: the netdev being configured
8535  * @filter_mask: unused
8536  * @nlflags: netlink flags passed in
8537  *
8538  * Return the mode in which the hardware bridge is operating in
8539  * i.e VEB or VEPA.
8540  **/
8541 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8542                                    struct net_device *dev,
8543                                    u32 __always_unused filter_mask,
8544                                    int nlflags)
8545 {
8546         struct i40e_netdev_priv *np = netdev_priv(dev);
8547         struct i40e_vsi *vsi = np->vsi;
8548         struct i40e_pf *pf = vsi->back;
8549         struct i40e_veb *veb = NULL;
8550         int i;
8551
8552         /* Only for PF VSI for now */
8553         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8554                 return -EOPNOTSUPP;
8555
8556         /* Find the HW bridge for the PF VSI */
8557         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8558                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8559                         veb = pf->veb[i];
8560         }
8561
8562         if (!veb)
8563                 return 0;
8564
8565         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8566                                        nlflags, 0, 0, filter_mask, NULL);
8567 }
8568
8569 #define I40E_MAX_TUNNEL_HDR_LEN 80
8570 /**
8571  * i40e_features_check - Validate encapsulated packet conforms to limits
8572  * @skb: skb buff
8573  * @dev: This physical port's netdev
8574  * @features: Offload features that the stack believes apply
8575  **/
8576 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8577                                              struct net_device *dev,
8578                                              netdev_features_t features)
8579 {
8580         if (skb->encapsulation &&
8581             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8582              I40E_MAX_TUNNEL_HDR_LEN))
8583                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8584
8585         return features;
8586 }
8587
8588 static const struct net_device_ops i40e_netdev_ops = {
8589         .ndo_open               = i40e_open,
8590         .ndo_stop               = i40e_close,
8591         .ndo_start_xmit         = i40e_lan_xmit_frame,
8592         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8593         .ndo_set_rx_mode        = i40e_set_rx_mode,
8594         .ndo_validate_addr      = eth_validate_addr,
8595         .ndo_set_mac_address    = i40e_set_mac,
8596         .ndo_change_mtu         = i40e_change_mtu,
8597         .ndo_do_ioctl           = i40e_ioctl,
8598         .ndo_tx_timeout         = i40e_tx_timeout,
8599         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8600         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8601 #ifdef CONFIG_NET_POLL_CONTROLLER
8602         .ndo_poll_controller    = i40e_netpoll,
8603 #endif
8604         .ndo_setup_tc           = i40e_setup_tc,
8605 #ifdef I40E_FCOE
8606         .ndo_fcoe_enable        = i40e_fcoe_enable,
8607         .ndo_fcoe_disable       = i40e_fcoe_disable,
8608 #endif
8609         .ndo_set_features       = i40e_set_features,
8610         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8611         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8612         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8613         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8614         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8615         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8616 #ifdef CONFIG_I40E_VXLAN
8617         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8618         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8619 #endif
8620         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8621         .ndo_fdb_add            = i40e_ndo_fdb_add,
8622         .ndo_features_check     = i40e_features_check,
8623         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8624         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8625 };
8626
8627 /**
8628  * i40e_config_netdev - Setup the netdev flags
8629  * @vsi: the VSI being configured
8630  *
8631  * Returns 0 on success, negative value on failure
8632  **/
8633 static int i40e_config_netdev(struct i40e_vsi *vsi)
8634 {
8635         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8636         struct i40e_pf *pf = vsi->back;
8637         struct i40e_hw *hw = &pf->hw;
8638         struct i40e_netdev_priv *np;
8639         struct net_device *netdev;
8640         u8 mac_addr[ETH_ALEN];
8641         int etherdev_size;
8642
8643         etherdev_size = sizeof(struct i40e_netdev_priv);
8644         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8645         if (!netdev)
8646                 return -ENOMEM;
8647
8648         vsi->netdev = netdev;
8649         np = netdev_priv(netdev);
8650         np->vsi = vsi;
8651
8652         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8653                                   NETIF_F_GSO_UDP_TUNNEL |
8654                                   NETIF_F_GSO_GRE        |
8655                                   NETIF_F_TSO;
8656
8657         netdev->features = NETIF_F_SG                  |
8658                            NETIF_F_IP_CSUM             |
8659                            NETIF_F_SCTP_CSUM           |
8660                            NETIF_F_HIGHDMA             |
8661                            NETIF_F_GSO_UDP_TUNNEL      |
8662                            NETIF_F_GSO_GRE             |
8663                            NETIF_F_HW_VLAN_CTAG_TX     |
8664                            NETIF_F_HW_VLAN_CTAG_RX     |
8665                            NETIF_F_HW_VLAN_CTAG_FILTER |
8666                            NETIF_F_IPV6_CSUM           |
8667                            NETIF_F_TSO                 |
8668                            NETIF_F_TSO_ECN             |
8669                            NETIF_F_TSO6                |
8670                            NETIF_F_RXCSUM              |
8671                            NETIF_F_RXHASH              |
8672                            0;
8673
8674         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8675                 netdev->features |= NETIF_F_NTUPLE;
8676
8677         /* copy netdev features into list of user selectable features */
8678         netdev->hw_features |= netdev->features;
8679
8680         if (vsi->type == I40E_VSI_MAIN) {
8681                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8682                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8683                 /* The following steps are necessary to prevent reception
8684                  * of tagged packets - some older NVM configurations load a
8685                  * default a MAC-VLAN filter that accepts any tagged packet
8686                  * which must be replaced by a normal filter.
8687                  */
8688                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8689                         spin_lock_bh(&vsi->mac_filter_list_lock);
8690                         i40e_add_filter(vsi, mac_addr,
8691                                         I40E_VLAN_ANY, false, true);
8692                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8693                 }
8694         } else {
8695                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8696                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8697                          pf->vsi[pf->lan_vsi]->netdev->name);
8698                 random_ether_addr(mac_addr);
8699
8700                 spin_lock_bh(&vsi->mac_filter_list_lock);
8701                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8702                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8703         }
8704
8705         spin_lock_bh(&vsi->mac_filter_list_lock);
8706         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8707         spin_unlock_bh(&vsi->mac_filter_list_lock);
8708
8709         ether_addr_copy(netdev->dev_addr, mac_addr);
8710         ether_addr_copy(netdev->perm_addr, mac_addr);
8711         /* vlan gets same features (except vlan offload)
8712          * after any tweaks for specific VSI types
8713          */
8714         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8715                                                      NETIF_F_HW_VLAN_CTAG_RX |
8716                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8717         netdev->priv_flags |= IFF_UNICAST_FLT;
8718         netdev->priv_flags |= IFF_SUPP_NOFCS;
8719         /* Setup netdev TC information */
8720         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8721
8722         netdev->netdev_ops = &i40e_netdev_ops;
8723         netdev->watchdog_timeo = 5 * HZ;
8724         i40e_set_ethtool_ops(netdev);
8725 #ifdef I40E_FCOE
8726         i40e_fcoe_config_netdev(netdev, vsi);
8727 #endif
8728
8729         return 0;
8730 }
8731
8732 /**
8733  * i40e_vsi_delete - Delete a VSI from the switch
8734  * @vsi: the VSI being removed
8735  *
8736  * Returns 0 on success, negative value on failure
8737  **/
8738 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8739 {
8740         /* remove default VSI is not allowed */
8741         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8742                 return;
8743
8744         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8745 }
8746
8747 /**
8748  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8749  * @vsi: the VSI being queried
8750  *
8751  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8752  **/
8753 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8754 {
8755         struct i40e_veb *veb;
8756         struct i40e_pf *pf = vsi->back;
8757
8758         /* Uplink is not a bridge so default to VEB */
8759         if (vsi->veb_idx == I40E_NO_VEB)
8760                 return 1;
8761
8762         veb = pf->veb[vsi->veb_idx];
8763         if (!veb) {
8764                 dev_info(&pf->pdev->dev,
8765                          "There is no veb associated with the bridge\n");
8766                 return -ENOENT;
8767         }
8768
8769         /* Uplink is a bridge in VEPA mode */
8770         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8771                 return 0;
8772         } else {
8773                 /* Uplink is a bridge in VEB mode */
8774                 return 1;
8775         }
8776
8777         /* VEPA is now default bridge, so return 0 */
8778         return 0;
8779 }
8780
8781 /**
8782  * i40e_add_vsi - Add a VSI to the switch
8783  * @vsi: the VSI being configured
8784  *
8785  * This initializes a VSI context depending on the VSI type to be added and
8786  * passes it down to the add_vsi aq command.
8787  **/
8788 static int i40e_add_vsi(struct i40e_vsi *vsi)
8789 {
8790         int ret = -ENODEV;
8791         u8 laa_macaddr[ETH_ALEN];
8792         bool found_laa_mac_filter = false;
8793         struct i40e_pf *pf = vsi->back;
8794         struct i40e_hw *hw = &pf->hw;
8795         struct i40e_vsi_context ctxt;
8796         struct i40e_mac_filter *f, *ftmp;
8797
8798         u8 enabled_tc = 0x1; /* TC0 enabled */
8799         int f_count = 0;
8800
8801         memset(&ctxt, 0, sizeof(ctxt));
8802         switch (vsi->type) {
8803         case I40E_VSI_MAIN:
8804                 /* The PF's main VSI is already setup as part of the
8805                  * device initialization, so we'll not bother with
8806                  * the add_vsi call, but we will retrieve the current
8807                  * VSI context.
8808                  */
8809                 ctxt.seid = pf->main_vsi_seid;
8810                 ctxt.pf_num = pf->hw.pf_id;
8811                 ctxt.vf_num = 0;
8812                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8813                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8814                 if (ret) {
8815                         dev_info(&pf->pdev->dev,
8816                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8817                                  i40e_stat_str(&pf->hw, ret),
8818                                  i40e_aq_str(&pf->hw,
8819                                              pf->hw.aq.asq_last_status));
8820                         return -ENOENT;
8821                 }
8822                 vsi->info = ctxt.info;
8823                 vsi->info.valid_sections = 0;
8824
8825                 vsi->seid = ctxt.seid;
8826                 vsi->id = ctxt.vsi_number;
8827
8828                 enabled_tc = i40e_pf_get_tc_map(pf);
8829
8830                 /* MFP mode setup queue map and update VSI */
8831                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8832                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8833                         memset(&ctxt, 0, sizeof(ctxt));
8834                         ctxt.seid = pf->main_vsi_seid;
8835                         ctxt.pf_num = pf->hw.pf_id;
8836                         ctxt.vf_num = 0;
8837                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8838                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8839                         if (ret) {
8840                                 dev_info(&pf->pdev->dev,
8841                                          "update vsi failed, err %s aq_err %s\n",
8842                                          i40e_stat_str(&pf->hw, ret),
8843                                          i40e_aq_str(&pf->hw,
8844                                                     pf->hw.aq.asq_last_status));
8845                                 ret = -ENOENT;
8846                                 goto err;
8847                         }
8848                         /* update the local VSI info queue map */
8849                         i40e_vsi_update_queue_map(vsi, &ctxt);
8850                         vsi->info.valid_sections = 0;
8851                 } else {
8852                         /* Default/Main VSI is only enabled for TC0
8853                          * reconfigure it to enable all TCs that are
8854                          * available on the port in SFP mode.
8855                          * For MFP case the iSCSI PF would use this
8856                          * flow to enable LAN+iSCSI TC.
8857                          */
8858                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8859                         if (ret) {
8860                                 dev_info(&pf->pdev->dev,
8861                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8862                                          enabled_tc,
8863                                          i40e_stat_str(&pf->hw, ret),
8864                                          i40e_aq_str(&pf->hw,
8865                                                     pf->hw.aq.asq_last_status));
8866                                 ret = -ENOENT;
8867                         }
8868                 }
8869                 break;
8870
8871         case I40E_VSI_FDIR:
8872                 ctxt.pf_num = hw->pf_id;
8873                 ctxt.vf_num = 0;
8874                 ctxt.uplink_seid = vsi->uplink_seid;
8875                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8876                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8877                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8878                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8879                         ctxt.info.valid_sections |=
8880                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8881                         ctxt.info.switch_id =
8882                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8883                 }
8884                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8885                 break;
8886
8887         case I40E_VSI_VMDQ2:
8888                 ctxt.pf_num = hw->pf_id;
8889                 ctxt.vf_num = 0;
8890                 ctxt.uplink_seid = vsi->uplink_seid;
8891                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8892                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8893
8894                 /* This VSI is connected to VEB so the switch_id
8895                  * should be set to zero by default.
8896                  */
8897                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8898                         ctxt.info.valid_sections |=
8899                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8900                         ctxt.info.switch_id =
8901                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8902                 }
8903
8904                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8905                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8906                 break;
8907
8908         case I40E_VSI_SRIOV:
8909                 ctxt.pf_num = hw->pf_id;
8910                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8911                 ctxt.uplink_seid = vsi->uplink_seid;
8912                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8913                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8914
8915                 /* This VSI is connected to VEB so the switch_id
8916                  * should be set to zero by default.
8917                  */
8918                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8919                         ctxt.info.valid_sections |=
8920                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8921                         ctxt.info.switch_id =
8922                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8923                 }
8924
8925                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8926                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8927                 if (pf->vf[vsi->vf_id].spoofchk) {
8928                         ctxt.info.valid_sections |=
8929                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8930                         ctxt.info.sec_flags |=
8931                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8932                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8933                 }
8934                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8935                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8936                 break;
8937
8938 #ifdef I40E_FCOE
8939         case I40E_VSI_FCOE:
8940                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8941                 if (ret) {
8942                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8943                         return ret;
8944                 }
8945                 break;
8946
8947 #endif /* I40E_FCOE */
8948         default:
8949                 return -ENODEV;
8950         }
8951
8952         if (vsi->type != I40E_VSI_MAIN) {
8953                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8954                 if (ret) {
8955                         dev_info(&vsi->back->pdev->dev,
8956                                  "add vsi failed, err %s aq_err %s\n",
8957                                  i40e_stat_str(&pf->hw, ret),
8958                                  i40e_aq_str(&pf->hw,
8959                                              pf->hw.aq.asq_last_status));
8960                         ret = -ENOENT;
8961                         goto err;
8962                 }
8963                 vsi->info = ctxt.info;
8964                 vsi->info.valid_sections = 0;
8965                 vsi->seid = ctxt.seid;
8966                 vsi->id = ctxt.vsi_number;
8967         }
8968
8969         spin_lock_bh(&vsi->mac_filter_list_lock);
8970         /* If macvlan filters already exist, force them to get loaded */
8971         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8972                 f->changed = true;
8973                 f_count++;
8974
8975                 /* Expected to have only one MAC filter entry for LAA in list */
8976                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8977                         ether_addr_copy(laa_macaddr, f->macaddr);
8978                         found_laa_mac_filter = true;
8979                 }
8980         }
8981         spin_unlock_bh(&vsi->mac_filter_list_lock);
8982
8983         if (found_laa_mac_filter) {
8984                 struct i40e_aqc_remove_macvlan_element_data element;
8985
8986                 memset(&element, 0, sizeof(element));
8987                 ether_addr_copy(element.mac_addr, laa_macaddr);
8988                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8989                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8990                                              &element, 1, NULL);
8991                 if (ret) {
8992                         /* some older FW has a different default */
8993                         element.flags |=
8994                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8995                         i40e_aq_remove_macvlan(hw, vsi->seid,
8996                                                &element, 1, NULL);
8997                 }
8998
8999                 i40e_aq_mac_address_write(hw,
9000                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9001                                           laa_macaddr, NULL);
9002         }
9003
9004         if (f_count) {
9005                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9006                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9007         }
9008
9009         /* Update VSI BW information */
9010         ret = i40e_vsi_get_bw_info(vsi);
9011         if (ret) {
9012                 dev_info(&pf->pdev->dev,
9013                          "couldn't get vsi bw info, err %s aq_err %s\n",
9014                          i40e_stat_str(&pf->hw, ret),
9015                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9016                 /* VSI is already added so not tearing that up */
9017                 ret = 0;
9018         }
9019
9020 err:
9021         return ret;
9022 }
9023
9024 /**
9025  * i40e_vsi_release - Delete a VSI and free its resources
9026  * @vsi: the VSI being removed
9027  *
9028  * Returns 0 on success or < 0 on error
9029  **/
9030 int i40e_vsi_release(struct i40e_vsi *vsi)
9031 {
9032         struct i40e_mac_filter *f, *ftmp;
9033         struct i40e_veb *veb = NULL;
9034         struct i40e_pf *pf;
9035         u16 uplink_seid;
9036         int i, n;
9037
9038         pf = vsi->back;
9039
9040         /* release of a VEB-owner or last VSI is not allowed */
9041         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9042                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9043                          vsi->seid, vsi->uplink_seid);
9044                 return -ENODEV;
9045         }
9046         if (vsi == pf->vsi[pf->lan_vsi] &&
9047             !test_bit(__I40E_DOWN, &pf->state)) {
9048                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9049                 return -ENODEV;
9050         }
9051
9052         uplink_seid = vsi->uplink_seid;
9053         if (vsi->type != I40E_VSI_SRIOV) {
9054                 if (vsi->netdev_registered) {
9055                         vsi->netdev_registered = false;
9056                         if (vsi->netdev) {
9057                                 /* results in a call to i40e_close() */
9058                                 unregister_netdev(vsi->netdev);
9059                         }
9060                 } else {
9061                         i40e_vsi_close(vsi);
9062                 }
9063                 i40e_vsi_disable_irq(vsi);
9064         }
9065
9066         spin_lock_bh(&vsi->mac_filter_list_lock);
9067         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9068                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9069                                 f->is_vf, f->is_netdev);
9070         spin_unlock_bh(&vsi->mac_filter_list_lock);
9071
9072         i40e_sync_vsi_filters(vsi, false);
9073
9074         i40e_vsi_delete(vsi);
9075         i40e_vsi_free_q_vectors(vsi);
9076         if (vsi->netdev) {
9077                 free_netdev(vsi->netdev);
9078                 vsi->netdev = NULL;
9079         }
9080         i40e_vsi_clear_rings(vsi);
9081         i40e_vsi_clear(vsi);
9082
9083         /* If this was the last thing on the VEB, except for the
9084          * controlling VSI, remove the VEB, which puts the controlling
9085          * VSI onto the next level down in the switch.
9086          *
9087          * Well, okay, there's one more exception here: don't remove
9088          * the orphan VEBs yet.  We'll wait for an explicit remove request
9089          * from up the network stack.
9090          */
9091         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9092                 if (pf->vsi[i] &&
9093                     pf->vsi[i]->uplink_seid == uplink_seid &&
9094                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9095                         n++;      /* count the VSIs */
9096                 }
9097         }
9098         for (i = 0; i < I40E_MAX_VEB; i++) {
9099                 if (!pf->veb[i])
9100                         continue;
9101                 if (pf->veb[i]->uplink_seid == uplink_seid)
9102                         n++;     /* count the VEBs */
9103                 if (pf->veb[i]->seid == uplink_seid)
9104                         veb = pf->veb[i];
9105         }
9106         if (n == 0 && veb && veb->uplink_seid != 0)
9107                 i40e_veb_release(veb);
9108
9109         return 0;
9110 }
9111
9112 /**
9113  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9114  * @vsi: ptr to the VSI
9115  *
9116  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9117  * corresponding SW VSI structure and initializes num_queue_pairs for the
9118  * newly allocated VSI.
9119  *
9120  * Returns 0 on success or negative on failure
9121  **/
9122 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9123 {
9124         int ret = -ENOENT;
9125         struct i40e_pf *pf = vsi->back;
9126
9127         if (vsi->q_vectors[0]) {
9128                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9129                          vsi->seid);
9130                 return -EEXIST;
9131         }
9132
9133         if (vsi->base_vector) {
9134                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9135                          vsi->seid, vsi->base_vector);
9136                 return -EEXIST;
9137         }
9138
9139         ret = i40e_vsi_alloc_q_vectors(vsi);
9140         if (ret) {
9141                 dev_info(&pf->pdev->dev,
9142                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9143                          vsi->num_q_vectors, vsi->seid, ret);
9144                 vsi->num_q_vectors = 0;
9145                 goto vector_setup_out;
9146         }
9147
9148         /* In Legacy mode, we do not have to get any other vector since we
9149          * piggyback on the misc/ICR0 for queue interrupts.
9150         */
9151         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9152                 return ret;
9153         if (vsi->num_q_vectors)
9154                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9155                                                  vsi->num_q_vectors, vsi->idx);
9156         if (vsi->base_vector < 0) {
9157                 dev_info(&pf->pdev->dev,
9158                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9159                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9160                 i40e_vsi_free_q_vectors(vsi);
9161                 ret = -ENOENT;
9162                 goto vector_setup_out;
9163         }
9164
9165 vector_setup_out:
9166         return ret;
9167 }
9168
9169 /**
9170  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9171  * @vsi: pointer to the vsi.
9172  *
9173  * This re-allocates a vsi's queue resources.
9174  *
9175  * Returns pointer to the successfully allocated and configured VSI sw struct
9176  * on success, otherwise returns NULL on failure.
9177  **/
9178 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9179 {
9180         struct i40e_pf *pf = vsi->back;
9181         u8 enabled_tc;
9182         int ret;
9183
9184         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9185         i40e_vsi_clear_rings(vsi);
9186
9187         i40e_vsi_free_arrays(vsi, false);
9188         i40e_set_num_rings_in_vsi(vsi);
9189         ret = i40e_vsi_alloc_arrays(vsi, false);
9190         if (ret)
9191                 goto err_vsi;
9192
9193         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9194         if (ret < 0) {
9195                 dev_info(&pf->pdev->dev,
9196                          "failed to get tracking for %d queues for VSI %d err %d\n",
9197                          vsi->alloc_queue_pairs, vsi->seid, ret);
9198                 goto err_vsi;
9199         }
9200         vsi->base_queue = ret;
9201
9202         /* Update the FW view of the VSI. Force a reset of TC and queue
9203          * layout configurations.
9204          */
9205         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9206         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9207         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9208         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9209
9210         /* assign it some queues */
9211         ret = i40e_alloc_rings(vsi);
9212         if (ret)
9213                 goto err_rings;
9214
9215         /* map all of the rings to the q_vectors */
9216         i40e_vsi_map_rings_to_vectors(vsi);
9217         return vsi;
9218
9219 err_rings:
9220         i40e_vsi_free_q_vectors(vsi);
9221         if (vsi->netdev_registered) {
9222                 vsi->netdev_registered = false;
9223                 unregister_netdev(vsi->netdev);
9224                 free_netdev(vsi->netdev);
9225                 vsi->netdev = NULL;
9226         }
9227         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9228 err_vsi:
9229         i40e_vsi_clear(vsi);
9230         return NULL;
9231 }
9232
9233 /**
9234  * i40e_vsi_setup - Set up a VSI by a given type
9235  * @pf: board private structure
9236  * @type: VSI type
9237  * @uplink_seid: the switch element to link to
9238  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9239  *
9240  * This allocates the sw VSI structure and its queue resources, then add a VSI
9241  * to the identified VEB.
9242  *
9243  * Returns pointer to the successfully allocated and configure VSI sw struct on
9244  * success, otherwise returns NULL on failure.
9245  **/
9246 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9247                                 u16 uplink_seid, u32 param1)
9248 {
9249         struct i40e_vsi *vsi = NULL;
9250         struct i40e_veb *veb = NULL;
9251         int ret, i;
9252         int v_idx;
9253
9254         /* The requested uplink_seid must be either
9255          *     - the PF's port seid
9256          *              no VEB is needed because this is the PF
9257          *              or this is a Flow Director special case VSI
9258          *     - seid of an existing VEB
9259          *     - seid of a VSI that owns an existing VEB
9260          *     - seid of a VSI that doesn't own a VEB
9261          *              a new VEB is created and the VSI becomes the owner
9262          *     - seid of the PF VSI, which is what creates the first VEB
9263          *              this is a special case of the previous
9264          *
9265          * Find which uplink_seid we were given and create a new VEB if needed
9266          */
9267         for (i = 0; i < I40E_MAX_VEB; i++) {
9268                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9269                         veb = pf->veb[i];
9270                         break;
9271                 }
9272         }
9273
9274         if (!veb && uplink_seid != pf->mac_seid) {
9275
9276                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9277                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9278                                 vsi = pf->vsi[i];
9279                                 break;
9280                         }
9281                 }
9282                 if (!vsi) {
9283                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9284                                  uplink_seid);
9285                         return NULL;
9286                 }
9287
9288                 if (vsi->uplink_seid == pf->mac_seid)
9289                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9290                                              vsi->tc_config.enabled_tc);
9291                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9292                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9293                                              vsi->tc_config.enabled_tc);
9294                 if (veb) {
9295                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9296                                 dev_info(&vsi->back->pdev->dev,
9297                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9298                                 return NULL;
9299                         }
9300                         /* We come up by default in VEPA mode if SRIOV is not
9301                          * already enabled, in which case we can't force VEPA
9302                          * mode.
9303                          */
9304                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9305                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9306                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9307                         }
9308                         i40e_config_bridge_mode(veb);
9309                 }
9310                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9311                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9312                                 veb = pf->veb[i];
9313                 }
9314                 if (!veb) {
9315                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9316                         return NULL;
9317                 }
9318
9319                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9320                 uplink_seid = veb->seid;
9321         }
9322
9323         /* get vsi sw struct */
9324         v_idx = i40e_vsi_mem_alloc(pf, type);
9325         if (v_idx < 0)
9326                 goto err_alloc;
9327         vsi = pf->vsi[v_idx];
9328         if (!vsi)
9329                 goto err_alloc;
9330         vsi->type = type;
9331         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9332
9333         if (type == I40E_VSI_MAIN)
9334                 pf->lan_vsi = v_idx;
9335         else if (type == I40E_VSI_SRIOV)
9336                 vsi->vf_id = param1;
9337         /* assign it some queues */
9338         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9339                                 vsi->idx);
9340         if (ret < 0) {
9341                 dev_info(&pf->pdev->dev,
9342                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9343                          vsi->alloc_queue_pairs, vsi->seid, ret);
9344                 goto err_vsi;
9345         }
9346         vsi->base_queue = ret;
9347
9348         /* get a VSI from the hardware */
9349         vsi->uplink_seid = uplink_seid;
9350         ret = i40e_add_vsi(vsi);
9351         if (ret)
9352                 goto err_vsi;
9353
9354         switch (vsi->type) {
9355         /* setup the netdev if needed */
9356         case I40E_VSI_MAIN:
9357         case I40E_VSI_VMDQ2:
9358         case I40E_VSI_FCOE:
9359                 ret = i40e_config_netdev(vsi);
9360                 if (ret)
9361                         goto err_netdev;
9362                 ret = register_netdev(vsi->netdev);
9363                 if (ret)
9364                         goto err_netdev;
9365                 vsi->netdev_registered = true;
9366                 netif_carrier_off(vsi->netdev);
9367 #ifdef CONFIG_I40E_DCB
9368                 /* Setup DCB netlink interface */
9369                 i40e_dcbnl_setup(vsi);
9370 #endif /* CONFIG_I40E_DCB */
9371                 /* fall through */
9372
9373         case I40E_VSI_FDIR:
9374                 /* set up vectors and rings if needed */
9375                 ret = i40e_vsi_setup_vectors(vsi);
9376                 if (ret)
9377                         goto err_msix;
9378
9379                 ret = i40e_alloc_rings(vsi);
9380                 if (ret)
9381                         goto err_rings;
9382
9383                 /* map all of the rings to the q_vectors */
9384                 i40e_vsi_map_rings_to_vectors(vsi);
9385
9386                 i40e_vsi_reset_stats(vsi);
9387                 break;
9388
9389         default:
9390                 /* no netdev or rings for the other VSI types */
9391                 break;
9392         }
9393
9394         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9395             (vsi->type == I40E_VSI_VMDQ2)) {
9396                 ret = i40e_vsi_config_rss(vsi);
9397         }
9398         return vsi;
9399
9400 err_rings:
9401         i40e_vsi_free_q_vectors(vsi);
9402 err_msix:
9403         if (vsi->netdev_registered) {
9404                 vsi->netdev_registered = false;
9405                 unregister_netdev(vsi->netdev);
9406                 free_netdev(vsi->netdev);
9407                 vsi->netdev = NULL;
9408         }
9409 err_netdev:
9410         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9411 err_vsi:
9412         i40e_vsi_clear(vsi);
9413 err_alloc:
9414         return NULL;
9415 }
9416
9417 /**
9418  * i40e_veb_get_bw_info - Query VEB BW information
9419  * @veb: the veb to query
9420  *
9421  * Query the Tx scheduler BW configuration data for given VEB
9422  **/
9423 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9424 {
9425         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9426         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9427         struct i40e_pf *pf = veb->pf;
9428         struct i40e_hw *hw = &pf->hw;
9429         u32 tc_bw_max;
9430         int ret = 0;
9431         int i;
9432
9433         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9434                                                   &bw_data, NULL);
9435         if (ret) {
9436                 dev_info(&pf->pdev->dev,
9437                          "query veb bw config failed, err %s aq_err %s\n",
9438                          i40e_stat_str(&pf->hw, ret),
9439                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9440                 goto out;
9441         }
9442
9443         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9444                                                    &ets_data, NULL);
9445         if (ret) {
9446                 dev_info(&pf->pdev->dev,
9447                          "query veb bw ets config failed, err %s aq_err %s\n",
9448                          i40e_stat_str(&pf->hw, ret),
9449                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9450                 goto out;
9451         }
9452
9453         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9454         veb->bw_max_quanta = ets_data.tc_bw_max;
9455         veb->is_abs_credits = bw_data.absolute_credits_enable;
9456         veb->enabled_tc = ets_data.tc_valid_bits;
9457         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9458                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9459         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9460                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9461                 veb->bw_tc_limit_credits[i] =
9462                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9463                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9464         }
9465
9466 out:
9467         return ret;
9468 }
9469
9470 /**
9471  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9472  * @pf: board private structure
9473  *
9474  * On error: returns error code (negative)
9475  * On success: returns vsi index in PF (positive)
9476  **/
9477 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9478 {
9479         int ret = -ENOENT;
9480         struct i40e_veb *veb;
9481         int i;
9482
9483         /* Need to protect the allocation of switch elements at the PF level */
9484         mutex_lock(&pf->switch_mutex);
9485
9486         /* VEB list may be fragmented if VEB creation/destruction has
9487          * been happening.  We can afford to do a quick scan to look
9488          * for any free slots in the list.
9489          *
9490          * find next empty veb slot, looping back around if necessary
9491          */
9492         i = 0;
9493         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9494                 i++;
9495         if (i >= I40E_MAX_VEB) {
9496                 ret = -ENOMEM;
9497                 goto err_alloc_veb;  /* out of VEB slots! */
9498         }
9499
9500         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9501         if (!veb) {
9502                 ret = -ENOMEM;
9503                 goto err_alloc_veb;
9504         }
9505         veb->pf = pf;
9506         veb->idx = i;
9507         veb->enabled_tc = 1;
9508
9509         pf->veb[i] = veb;
9510         ret = i;
9511 err_alloc_veb:
9512         mutex_unlock(&pf->switch_mutex);
9513         return ret;
9514 }
9515
9516 /**
9517  * i40e_switch_branch_release - Delete a branch of the switch tree
9518  * @branch: where to start deleting
9519  *
9520  * This uses recursion to find the tips of the branch to be
9521  * removed, deleting until we get back to and can delete this VEB.
9522  **/
9523 static void i40e_switch_branch_release(struct i40e_veb *branch)
9524 {
9525         struct i40e_pf *pf = branch->pf;
9526         u16 branch_seid = branch->seid;
9527         u16 veb_idx = branch->idx;
9528         int i;
9529
9530         /* release any VEBs on this VEB - RECURSION */
9531         for (i = 0; i < I40E_MAX_VEB; i++) {
9532                 if (!pf->veb[i])
9533                         continue;
9534                 if (pf->veb[i]->uplink_seid == branch->seid)
9535                         i40e_switch_branch_release(pf->veb[i]);
9536         }
9537
9538         /* Release the VSIs on this VEB, but not the owner VSI.
9539          *
9540          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9541          *       the VEB itself, so don't use (*branch) after this loop.
9542          */
9543         for (i = 0; i < pf->num_alloc_vsi; i++) {
9544                 if (!pf->vsi[i])
9545                         continue;
9546                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9547                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9548                         i40e_vsi_release(pf->vsi[i]);
9549                 }
9550         }
9551
9552         /* There's one corner case where the VEB might not have been
9553          * removed, so double check it here and remove it if needed.
9554          * This case happens if the veb was created from the debugfs
9555          * commands and no VSIs were added to it.
9556          */
9557         if (pf->veb[veb_idx])
9558                 i40e_veb_release(pf->veb[veb_idx]);
9559 }
9560
9561 /**
9562  * i40e_veb_clear - remove veb struct
9563  * @veb: the veb to remove
9564  **/
9565 static void i40e_veb_clear(struct i40e_veb *veb)
9566 {
9567         if (!veb)
9568                 return;
9569
9570         if (veb->pf) {
9571                 struct i40e_pf *pf = veb->pf;
9572
9573                 mutex_lock(&pf->switch_mutex);
9574                 if (pf->veb[veb->idx] == veb)
9575                         pf->veb[veb->idx] = NULL;
9576                 mutex_unlock(&pf->switch_mutex);
9577         }
9578
9579         kfree(veb);
9580 }
9581
9582 /**
9583  * i40e_veb_release - Delete a VEB and free its resources
9584  * @veb: the VEB being removed
9585  **/
9586 void i40e_veb_release(struct i40e_veb *veb)
9587 {
9588         struct i40e_vsi *vsi = NULL;
9589         struct i40e_pf *pf;
9590         int i, n = 0;
9591
9592         pf = veb->pf;
9593
9594         /* find the remaining VSI and check for extras */
9595         for (i = 0; i < pf->num_alloc_vsi; i++) {
9596                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9597                         n++;
9598                         vsi = pf->vsi[i];
9599                 }
9600         }
9601         if (n != 1) {
9602                 dev_info(&pf->pdev->dev,
9603                          "can't remove VEB %d with %d VSIs left\n",
9604                          veb->seid, n);
9605                 return;
9606         }
9607
9608         /* move the remaining VSI to uplink veb */
9609         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9610         if (veb->uplink_seid) {
9611                 vsi->uplink_seid = veb->uplink_seid;
9612                 if (veb->uplink_seid == pf->mac_seid)
9613                         vsi->veb_idx = I40E_NO_VEB;
9614                 else
9615                         vsi->veb_idx = veb->veb_idx;
9616         } else {
9617                 /* floating VEB */
9618                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9619                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9620         }
9621
9622         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9623         i40e_veb_clear(veb);
9624 }
9625
9626 /**
9627  * i40e_add_veb - create the VEB in the switch
9628  * @veb: the VEB to be instantiated
9629  * @vsi: the controlling VSI
9630  **/
9631 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9632 {
9633         struct i40e_pf *pf = veb->pf;
9634         bool is_default = veb->pf->cur_promisc;
9635         bool is_cloud = false;
9636         int ret;
9637
9638         /* get a VEB from the hardware */
9639         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9640                               veb->enabled_tc, is_default,
9641                               is_cloud, &veb->seid, NULL);
9642         if (ret) {
9643                 dev_info(&pf->pdev->dev,
9644                          "couldn't add VEB, err %s aq_err %s\n",
9645                          i40e_stat_str(&pf->hw, ret),
9646                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9647                 return -EPERM;
9648         }
9649
9650         /* get statistics counter */
9651         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9652                                          &veb->stats_idx, NULL, NULL, NULL);
9653         if (ret) {
9654                 dev_info(&pf->pdev->dev,
9655                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9656                          i40e_stat_str(&pf->hw, ret),
9657                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9658                 return -EPERM;
9659         }
9660         ret = i40e_veb_get_bw_info(veb);
9661         if (ret) {
9662                 dev_info(&pf->pdev->dev,
9663                          "couldn't get VEB bw info, err %s aq_err %s\n",
9664                          i40e_stat_str(&pf->hw, ret),
9665                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9666                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9667                 return -ENOENT;
9668         }
9669
9670         vsi->uplink_seid = veb->seid;
9671         vsi->veb_idx = veb->idx;
9672         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9673
9674         return 0;
9675 }
9676
9677 /**
9678  * i40e_veb_setup - Set up a VEB
9679  * @pf: board private structure
9680  * @flags: VEB setup flags
9681  * @uplink_seid: the switch element to link to
9682  * @vsi_seid: the initial VSI seid
9683  * @enabled_tc: Enabled TC bit-map
9684  *
9685  * This allocates the sw VEB structure and links it into the switch
9686  * It is possible and legal for this to be a duplicate of an already
9687  * existing VEB.  It is also possible for both uplink and vsi seids
9688  * to be zero, in order to create a floating VEB.
9689  *
9690  * Returns pointer to the successfully allocated VEB sw struct on
9691  * success, otherwise returns NULL on failure.
9692  **/
9693 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9694                                 u16 uplink_seid, u16 vsi_seid,
9695                                 u8 enabled_tc)
9696 {
9697         struct i40e_veb *veb, *uplink_veb = NULL;
9698         int vsi_idx, veb_idx;
9699         int ret;
9700
9701         /* if one seid is 0, the other must be 0 to create a floating relay */
9702         if ((uplink_seid == 0 || vsi_seid == 0) &&
9703             (uplink_seid + vsi_seid != 0)) {
9704                 dev_info(&pf->pdev->dev,
9705                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9706                          uplink_seid, vsi_seid);
9707                 return NULL;
9708         }
9709
9710         /* make sure there is such a vsi and uplink */
9711         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9712                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9713                         break;
9714         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9715                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9716                          vsi_seid);
9717                 return NULL;
9718         }
9719
9720         if (uplink_seid && uplink_seid != pf->mac_seid) {
9721                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9722                         if (pf->veb[veb_idx] &&
9723                             pf->veb[veb_idx]->seid == uplink_seid) {
9724                                 uplink_veb = pf->veb[veb_idx];
9725                                 break;
9726                         }
9727                 }
9728                 if (!uplink_veb) {
9729                         dev_info(&pf->pdev->dev,
9730                                  "uplink seid %d not found\n", uplink_seid);
9731                         return NULL;
9732                 }
9733         }
9734
9735         /* get veb sw struct */
9736         veb_idx = i40e_veb_mem_alloc(pf);
9737         if (veb_idx < 0)
9738                 goto err_alloc;
9739         veb = pf->veb[veb_idx];
9740         veb->flags = flags;
9741         veb->uplink_seid = uplink_seid;
9742         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9743         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9744
9745         /* create the VEB in the switch */
9746         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9747         if (ret)
9748                 goto err_veb;
9749         if (vsi_idx == pf->lan_vsi)
9750                 pf->lan_veb = veb->idx;
9751
9752         return veb;
9753
9754 err_veb:
9755         i40e_veb_clear(veb);
9756 err_alloc:
9757         return NULL;
9758 }
9759
9760 /**
9761  * i40e_setup_pf_switch_element - set PF vars based on switch type
9762  * @pf: board private structure
9763  * @ele: element we are building info from
9764  * @num_reported: total number of elements
9765  * @printconfig: should we print the contents
9766  *
9767  * helper function to assist in extracting a few useful SEID values.
9768  **/
9769 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9770                                 struct i40e_aqc_switch_config_element_resp *ele,
9771                                 u16 num_reported, bool printconfig)
9772 {
9773         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9774         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9775         u8 element_type = ele->element_type;
9776         u16 seid = le16_to_cpu(ele->seid);
9777
9778         if (printconfig)
9779                 dev_info(&pf->pdev->dev,
9780                          "type=%d seid=%d uplink=%d downlink=%d\n",
9781                          element_type, seid, uplink_seid, downlink_seid);
9782
9783         switch (element_type) {
9784         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9785                 pf->mac_seid = seid;
9786                 break;
9787         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9788                 /* Main VEB? */
9789                 if (uplink_seid != pf->mac_seid)
9790                         break;
9791                 if (pf->lan_veb == I40E_NO_VEB) {
9792                         int v;
9793
9794                         /* find existing or else empty VEB */
9795                         for (v = 0; v < I40E_MAX_VEB; v++) {
9796                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9797                                         pf->lan_veb = v;
9798                                         break;
9799                                 }
9800                         }
9801                         if (pf->lan_veb == I40E_NO_VEB) {
9802                                 v = i40e_veb_mem_alloc(pf);
9803                                 if (v < 0)
9804                                         break;
9805                                 pf->lan_veb = v;
9806                         }
9807                 }
9808
9809                 pf->veb[pf->lan_veb]->seid = seid;
9810                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9811                 pf->veb[pf->lan_veb]->pf = pf;
9812                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9813                 break;
9814         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9815                 if (num_reported != 1)
9816                         break;
9817                 /* This is immediately after a reset so we can assume this is
9818                  * the PF's VSI
9819                  */
9820                 pf->mac_seid = uplink_seid;
9821                 pf->pf_seid = downlink_seid;
9822                 pf->main_vsi_seid = seid;
9823                 if (printconfig)
9824                         dev_info(&pf->pdev->dev,
9825                                  "pf_seid=%d main_vsi_seid=%d\n",
9826                                  pf->pf_seid, pf->main_vsi_seid);
9827                 break;
9828         case I40E_SWITCH_ELEMENT_TYPE_PF:
9829         case I40E_SWITCH_ELEMENT_TYPE_VF:
9830         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9831         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9832         case I40E_SWITCH_ELEMENT_TYPE_PE:
9833         case I40E_SWITCH_ELEMENT_TYPE_PA:
9834                 /* ignore these for now */
9835                 break;
9836         default:
9837                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9838                          element_type, seid);
9839                 break;
9840         }
9841 }
9842
9843 /**
9844  * i40e_fetch_switch_configuration - Get switch config from firmware
9845  * @pf: board private structure
9846  * @printconfig: should we print the contents
9847  *
9848  * Get the current switch configuration from the device and
9849  * extract a few useful SEID values.
9850  **/
9851 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9852 {
9853         struct i40e_aqc_get_switch_config_resp *sw_config;
9854         u16 next_seid = 0;
9855         int ret = 0;
9856         u8 *aq_buf;
9857         int i;
9858
9859         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9860         if (!aq_buf)
9861                 return -ENOMEM;
9862
9863         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9864         do {
9865                 u16 num_reported, num_total;
9866
9867                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9868                                                 I40E_AQ_LARGE_BUF,
9869                                                 &next_seid, NULL);
9870                 if (ret) {
9871                         dev_info(&pf->pdev->dev,
9872                                  "get switch config failed err %s aq_err %s\n",
9873                                  i40e_stat_str(&pf->hw, ret),
9874                                  i40e_aq_str(&pf->hw,
9875                                              pf->hw.aq.asq_last_status));
9876                         kfree(aq_buf);
9877                         return -ENOENT;
9878                 }
9879
9880                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9881                 num_total = le16_to_cpu(sw_config->header.num_total);
9882
9883                 if (printconfig)
9884                         dev_info(&pf->pdev->dev,
9885                                  "header: %d reported %d total\n",
9886                                  num_reported, num_total);
9887
9888                 for (i = 0; i < num_reported; i++) {
9889                         struct i40e_aqc_switch_config_element_resp *ele =
9890                                 &sw_config->element[i];
9891
9892                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9893                                                      printconfig);
9894                 }
9895         } while (next_seid != 0);
9896
9897         kfree(aq_buf);
9898         return ret;
9899 }
9900
9901 /**
9902  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9903  * @pf: board private structure
9904  * @reinit: if the Main VSI needs to re-initialized.
9905  *
9906  * Returns 0 on success, negative value on failure
9907  **/
9908 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9909 {
9910         int ret;
9911
9912         /* find out what's out there already */
9913         ret = i40e_fetch_switch_configuration(pf, false);
9914         if (ret) {
9915                 dev_info(&pf->pdev->dev,
9916                          "couldn't fetch switch config, err %s aq_err %s\n",
9917                          i40e_stat_str(&pf->hw, ret),
9918                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9919                 return ret;
9920         }
9921         i40e_pf_reset_stats(pf);
9922
9923         /* first time setup */
9924         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9925                 struct i40e_vsi *vsi = NULL;
9926                 u16 uplink_seid;
9927
9928                 /* Set up the PF VSI associated with the PF's main VSI
9929                  * that is already in the HW switch
9930                  */
9931                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9932                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9933                 else
9934                         uplink_seid = pf->mac_seid;
9935                 if (pf->lan_vsi == I40E_NO_VSI)
9936                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9937                 else if (reinit)
9938                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9939                 if (!vsi) {
9940                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9941                         i40e_fdir_teardown(pf);
9942                         return -EAGAIN;
9943                 }
9944         } else {
9945                 /* force a reset of TC and queue layout configurations */
9946                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9947
9948                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9949                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9950                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9951         }
9952         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9953
9954         i40e_fdir_sb_setup(pf);
9955
9956         /* Setup static PF queue filter control settings */
9957         ret = i40e_setup_pf_filter_control(pf);
9958         if (ret) {
9959                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9960                          ret);
9961                 /* Failure here should not stop continuing other steps */
9962         }
9963
9964         /* enable RSS in the HW, even for only one queue, as the stack can use
9965          * the hash
9966          */
9967         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9968                 i40e_config_rss(pf);
9969
9970         /* fill in link information and enable LSE reporting */
9971         i40e_update_link_info(&pf->hw);
9972         i40e_link_event(pf);
9973
9974         /* Initialize user-specific link properties */
9975         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9976                                   I40E_AQ_AN_COMPLETED) ? true : false);
9977
9978         i40e_ptp_init(pf);
9979
9980         return ret;
9981 }
9982
9983 /**
9984  * i40e_determine_queue_usage - Work out queue distribution
9985  * @pf: board private structure
9986  **/
9987 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9988 {
9989         int queues_left;
9990
9991         pf->num_lan_qps = 0;
9992 #ifdef I40E_FCOE
9993         pf->num_fcoe_qps = 0;
9994 #endif
9995
9996         /* Find the max queues to be put into basic use.  We'll always be
9997          * using TC0, whether or not DCB is running, and TC0 will get the
9998          * big RSS set.
9999          */
10000         queues_left = pf->hw.func_caps.num_tx_qp;
10001
10002         if ((queues_left == 1) ||
10003             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10004                 /* one qp for PF, no queues for anything else */
10005                 queues_left = 0;
10006                 pf->rss_size = pf->num_lan_qps = 1;
10007
10008                 /* make sure all the fancies are disabled */
10009                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10010 #ifdef I40E_FCOE
10011                                I40E_FLAG_FCOE_ENABLED   |
10012 #endif
10013                                I40E_FLAG_FD_SB_ENABLED  |
10014                                I40E_FLAG_FD_ATR_ENABLED |
10015                                I40E_FLAG_DCB_CAPABLE    |
10016                                I40E_FLAG_SRIOV_ENABLED  |
10017                                I40E_FLAG_VMDQ_ENABLED);
10018         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10019                                   I40E_FLAG_FD_SB_ENABLED |
10020                                   I40E_FLAG_FD_ATR_ENABLED |
10021                                   I40E_FLAG_DCB_CAPABLE))) {
10022                 /* one qp for PF */
10023                 pf->rss_size = pf->num_lan_qps = 1;
10024                 queues_left -= pf->num_lan_qps;
10025
10026                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10027 #ifdef I40E_FCOE
10028                                I40E_FLAG_FCOE_ENABLED   |
10029 #endif
10030                                I40E_FLAG_FD_SB_ENABLED  |
10031                                I40E_FLAG_FD_ATR_ENABLED |
10032                                I40E_FLAG_DCB_ENABLED    |
10033                                I40E_FLAG_VMDQ_ENABLED);
10034         } else {
10035                 /* Not enough queues for all TCs */
10036                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10037                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10038                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10039                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10040                 }
10041                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10042                                         num_online_cpus());
10043                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10044                                         pf->hw.func_caps.num_tx_qp);
10045
10046                 queues_left -= pf->num_lan_qps;
10047         }
10048
10049 #ifdef I40E_FCOE
10050         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10051                 if (I40E_DEFAULT_FCOE <= queues_left) {
10052                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10053                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10054                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10055                 } else {
10056                         pf->num_fcoe_qps = 0;
10057                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10058                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10059                 }
10060
10061                 queues_left -= pf->num_fcoe_qps;
10062         }
10063
10064 #endif
10065         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10066                 if (queues_left > 1) {
10067                         queues_left -= 1; /* save 1 queue for FD */
10068                 } else {
10069                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10070                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10071                 }
10072         }
10073
10074         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10075             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10076                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10077                                         (queues_left / pf->num_vf_qps));
10078                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10079         }
10080
10081         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10082             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10083                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10084                                           (queues_left / pf->num_vmdq_qps));
10085                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10086         }
10087
10088         pf->queues_left = queues_left;
10089         dev_dbg(&pf->pdev->dev,
10090                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10091                 pf->hw.func_caps.num_tx_qp,
10092                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10093                 pf->num_lan_qps, pf->rss_size, pf->num_req_vfs, pf->num_vf_qps,
10094                 pf->num_vmdq_vsis, pf->num_vmdq_qps, queues_left);
10095 #ifdef I40E_FCOE
10096         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10097 #endif
10098 }
10099
10100 /**
10101  * i40e_setup_pf_filter_control - Setup PF static filter control
10102  * @pf: PF to be setup
10103  *
10104  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10105  * settings. If PE/FCoE are enabled then it will also set the per PF
10106  * based filter sizes required for them. It also enables Flow director,
10107  * ethertype and macvlan type filter settings for the pf.
10108  *
10109  * Returns 0 on success, negative on failure
10110  **/
10111 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10112 {
10113         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10114
10115         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10116
10117         /* Flow Director is enabled */
10118         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10119                 settings->enable_fdir = true;
10120
10121         /* Ethtype and MACVLAN filters enabled for PF */
10122         settings->enable_ethtype = true;
10123         settings->enable_macvlan = true;
10124
10125         if (i40e_set_filter_control(&pf->hw, settings))
10126                 return -ENOENT;
10127
10128         return 0;
10129 }
10130
10131 #define INFO_STRING_LEN 255
10132 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10133 static void i40e_print_features(struct i40e_pf *pf)
10134 {
10135         struct i40e_hw *hw = &pf->hw;
10136         char *buf, *string;
10137         int i = 0;
10138
10139         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10140         if (!string) {
10141                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10142                 return;
10143         }
10144
10145         buf = string;
10146
10147         i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
10148 #ifdef CONFIG_PCI_IOV
10149         i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
10150 #endif
10151         i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
10152                       pf->hw.func_caps.num_vsis,
10153                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10154                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10155
10156         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10157                 i += snprintf(&buf[i], REMAIN(i), "RSS ");
10158         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10159                 i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
10160         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10161                 i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
10162                 i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
10163         }
10164         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10165                 i += snprintf(&buf[i], REMAIN(i), "DCB ");
10166 #if IS_ENABLED(CONFIG_VXLAN)
10167         i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
10168 #endif
10169         if (pf->flags & I40E_FLAG_PTP)
10170                 i += snprintf(&buf[i], REMAIN(i), "PTP ");
10171 #ifdef I40E_FCOE
10172         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10173                 i += snprintf(&buf[i], REMAIN(i), "FCOE ");
10174 #endif
10175         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10176                 i += snprintf(&buf[i], REMAIN(i), "VEPA ");
10177         else
10178                 buf += sprintf(buf, "VEPA ");
10179
10180         dev_info(&pf->pdev->dev, "%s\n", string);
10181         kfree(string);
10182         WARN_ON(i > INFO_STRING_LEN);
10183 }
10184
10185 /**
10186  * i40e_probe - Device initialization routine
10187  * @pdev: PCI device information struct
10188  * @ent: entry in i40e_pci_tbl
10189  *
10190  * i40e_probe initializes a PF identified by a pci_dev structure.
10191  * The OS initialization, configuring of the PF private structure,
10192  * and a hardware reset occur.
10193  *
10194  * Returns 0 on success, negative on failure
10195  **/
10196 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10197 {
10198         struct i40e_aq_get_phy_abilities_resp abilities;
10199         struct i40e_pf *pf;
10200         struct i40e_hw *hw;
10201         static u16 pfs_found;
10202         u16 wol_nvm_bits;
10203         u16 link_status;
10204         int err;
10205         u32 len;
10206         u32 val;
10207         u32 i;
10208         u8 set_fc_aq_fail;
10209
10210         err = pci_enable_device_mem(pdev);
10211         if (err)
10212                 return err;
10213
10214         /* set up for high or low dma */
10215         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10216         if (err) {
10217                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10218                 if (err) {
10219                         dev_err(&pdev->dev,
10220                                 "DMA configuration failed: 0x%x\n", err);
10221                         goto err_dma;
10222                 }
10223         }
10224
10225         /* set up pci connections */
10226         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10227                                            IORESOURCE_MEM), i40e_driver_name);
10228         if (err) {
10229                 dev_info(&pdev->dev,
10230                          "pci_request_selected_regions failed %d\n", err);
10231                 goto err_pci_reg;
10232         }
10233
10234         pci_enable_pcie_error_reporting(pdev);
10235         pci_set_master(pdev);
10236
10237         /* Now that we have a PCI connection, we need to do the
10238          * low level device setup.  This is primarily setting up
10239          * the Admin Queue structures and then querying for the
10240          * device's current profile information.
10241          */
10242         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10243         if (!pf) {
10244                 err = -ENOMEM;
10245                 goto err_pf_alloc;
10246         }
10247         pf->next_vsi = 0;
10248         pf->pdev = pdev;
10249         set_bit(__I40E_DOWN, &pf->state);
10250
10251         hw = &pf->hw;
10252         hw->back = pf;
10253
10254         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10255                                 I40E_MAX_CSR_SPACE);
10256
10257         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10258         if (!hw->hw_addr) {
10259                 err = -EIO;
10260                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10261                          (unsigned int)pci_resource_start(pdev, 0),
10262                          pf->ioremap_len, err);
10263                 goto err_ioremap;
10264         }
10265         hw->vendor_id = pdev->vendor;
10266         hw->device_id = pdev->device;
10267         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10268         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10269         hw->subsystem_device_id = pdev->subsystem_device;
10270         hw->bus.device = PCI_SLOT(pdev->devfn);
10271         hw->bus.func = PCI_FUNC(pdev->devfn);
10272         pf->instance = pfs_found;
10273
10274         if (debug != -1) {
10275                 pf->msg_enable = pf->hw.debug_mask;
10276                 pf->msg_enable = debug;
10277         }
10278
10279         /* do a special CORER for clearing PXE mode once at init */
10280         if (hw->revision_id == 0 &&
10281             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10282                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10283                 i40e_flush(hw);
10284                 msleep(200);
10285                 pf->corer_count++;
10286
10287                 i40e_clear_pxe_mode(hw);
10288         }
10289
10290         /* Reset here to make sure all is clean and to define PF 'n' */
10291         i40e_clear_hw(hw);
10292         err = i40e_pf_reset(hw);
10293         if (err) {
10294                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10295                 goto err_pf_reset;
10296         }
10297         pf->pfr_count++;
10298
10299         hw->aq.num_arq_entries = I40E_AQ_LEN;
10300         hw->aq.num_asq_entries = I40E_AQ_LEN;
10301         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10302         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10303         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10304
10305         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10306                  "%s-%s:misc",
10307                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10308
10309         err = i40e_init_shared_code(hw);
10310         if (err) {
10311                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10312                          err);
10313                 goto err_pf_reset;
10314         }
10315
10316         /* set up a default setting for link flow control */
10317         pf->hw.fc.requested_mode = I40E_FC_NONE;
10318
10319         err = i40e_init_adminq(hw);
10320
10321         /* provide nvm, fw, api versions */
10322         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10323                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10324                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10325                  i40e_nvm_version_str(hw));
10326
10327         if (err) {
10328                 dev_info(&pdev->dev,
10329                          "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");
10330                 goto err_pf_reset;
10331         }
10332
10333         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10334             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10335                 dev_info(&pdev->dev,
10336                          "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");
10337         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10338                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10339                 dev_info(&pdev->dev,
10340                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10341
10342         i40e_verify_eeprom(pf);
10343
10344         /* Rev 0 hardware was never productized */
10345         if (hw->revision_id < 1)
10346                 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");
10347
10348         i40e_clear_pxe_mode(hw);
10349         err = i40e_get_capabilities(pf);
10350         if (err)
10351                 goto err_adminq_setup;
10352
10353         err = i40e_sw_init(pf);
10354         if (err) {
10355                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10356                 goto err_sw_init;
10357         }
10358
10359         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10360                                 hw->func_caps.num_rx_qp,
10361                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10362         if (err) {
10363                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10364                 goto err_init_lan_hmc;
10365         }
10366
10367         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10368         if (err) {
10369                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10370                 err = -ENOENT;
10371                 goto err_configure_lan_hmc;
10372         }
10373
10374         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10375          * Ignore error return codes because if it was already disabled via
10376          * hardware settings this will fail
10377          */
10378         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10379             (pf->hw.aq.fw_maj_ver < 4)) {
10380                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10381                 i40e_aq_stop_lldp(hw, true, NULL);
10382         }
10383
10384         i40e_get_mac_addr(hw, hw->mac.addr);
10385         if (!is_valid_ether_addr(hw->mac.addr)) {
10386                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10387                 err = -EIO;
10388                 goto err_mac_addr;
10389         }
10390         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10391         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10392         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10393         if (is_valid_ether_addr(hw->mac.port_addr))
10394                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10395 #ifdef I40E_FCOE
10396         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10397         if (err)
10398                 dev_info(&pdev->dev,
10399                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10400         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10401                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10402                          hw->mac.san_addr);
10403                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10404         }
10405         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10406 #endif /* I40E_FCOE */
10407
10408         pci_set_drvdata(pdev, pf);
10409         pci_save_state(pdev);
10410 #ifdef CONFIG_I40E_DCB
10411         err = i40e_init_pf_dcb(pf);
10412         if (err) {
10413                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10414                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10415                 /* Continue without DCB enabled */
10416         }
10417 #endif /* CONFIG_I40E_DCB */
10418
10419         /* set up periodic task facility */
10420         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10421         pf->service_timer_period = HZ;
10422
10423         INIT_WORK(&pf->service_task, i40e_service_task);
10424         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10425         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10426
10427         /* NVM bit on means WoL disabled for the port */
10428         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10429         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10430                 pf->wol_en = false;
10431         else
10432                 pf->wol_en = true;
10433         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10434
10435         /* set up the main switch operations */
10436         i40e_determine_queue_usage(pf);
10437         err = i40e_init_interrupt_scheme(pf);
10438         if (err)
10439                 goto err_switch_setup;
10440
10441         /* The number of VSIs reported by the FW is the minimum guaranteed
10442          * to us; HW supports far more and we share the remaining pool with
10443          * the other PFs. We allocate space for more than the guarantee with
10444          * the understanding that we might not get them all later.
10445          */
10446         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10447                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10448         else
10449                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10450
10451         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10452         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10453         pf->vsi = kzalloc(len, GFP_KERNEL);
10454         if (!pf->vsi) {
10455                 err = -ENOMEM;
10456                 goto err_switch_setup;
10457         }
10458
10459 #ifdef CONFIG_PCI_IOV
10460         /* prep for VF support */
10461         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10462             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10463             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10464                 if (pci_num_vf(pdev))
10465                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10466         }
10467 #endif
10468         err = i40e_setup_pf_switch(pf, false);
10469         if (err) {
10470                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10471                 goto err_vsis;
10472         }
10473
10474         /* Make sure flow control is set according to current settings */
10475         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10476         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10477                 dev_dbg(&pf->pdev->dev,
10478                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10479                         i40e_stat_str(hw, err),
10480                         i40e_aq_str(hw, hw->aq.asq_last_status));
10481         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10482                 dev_dbg(&pf->pdev->dev,
10483                         "Set fc with err %s aq_err %s on set_phy_config\n",
10484                         i40e_stat_str(hw, err),
10485                         i40e_aq_str(hw, hw->aq.asq_last_status));
10486         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10487                 dev_dbg(&pf->pdev->dev,
10488                         "Set fc with err %s aq_err %s on get_link_info\n",
10489                         i40e_stat_str(hw, err),
10490                         i40e_aq_str(hw, hw->aq.asq_last_status));
10491
10492         /* if FDIR VSI was set up, start it now */
10493         for (i = 0; i < pf->num_alloc_vsi; i++) {
10494                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10495                         i40e_vsi_open(pf->vsi[i]);
10496                         break;
10497                 }
10498         }
10499
10500         /* driver is only interested in link up/down and module qualification
10501          * reports from firmware
10502          */
10503         err = i40e_aq_set_phy_int_mask(&pf->hw,
10504                                        I40E_AQ_EVENT_LINK_UPDOWN |
10505                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10506         if (err)
10507                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10508                          i40e_stat_str(&pf->hw, err),
10509                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10510
10511         /* Reconfigure hardware for allowing smaller MSS in the case
10512          * of TSO, so that we avoid the MDD being fired and causing
10513          * a reset in the case of small MSS+TSO.
10514          */
10515         val = rd32(hw, I40E_REG_MSS);
10516         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10517                 val &= ~I40E_REG_MSS_MIN_MASK;
10518                 val |= I40E_64BYTE_MSS;
10519                 wr32(hw, I40E_REG_MSS, val);
10520         }
10521
10522         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10523             (pf->hw.aq.fw_maj_ver < 4)) {
10524                 msleep(75);
10525                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10526                 if (err)
10527                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10528                                  i40e_stat_str(&pf->hw, err),
10529                                  i40e_aq_str(&pf->hw,
10530                                              pf->hw.aq.asq_last_status));
10531         }
10532         /* The main driver is (mostly) up and happy. We need to set this state
10533          * before setting up the misc vector or we get a race and the vector
10534          * ends up disabled forever.
10535          */
10536         clear_bit(__I40E_DOWN, &pf->state);
10537
10538         /* In case of MSIX we are going to setup the misc vector right here
10539          * to handle admin queue events etc. In case of legacy and MSI
10540          * the misc functionality and queue processing is combined in
10541          * the same vector and that gets setup at open.
10542          */
10543         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10544                 err = i40e_setup_misc_vector(pf);
10545                 if (err) {
10546                         dev_info(&pdev->dev,
10547                                  "setup of misc vector failed: %d\n", err);
10548                         goto err_vsis;
10549                 }
10550         }
10551
10552 #ifdef CONFIG_PCI_IOV
10553         /* prep for VF support */
10554         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10555             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10556             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10557                 u32 val;
10558
10559                 /* disable link interrupts for VFs */
10560                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10561                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10562                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10563                 i40e_flush(hw);
10564
10565                 if (pci_num_vf(pdev)) {
10566                         dev_info(&pdev->dev,
10567                                  "Active VFs found, allocating resources.\n");
10568                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10569                         if (err)
10570                                 dev_info(&pdev->dev,
10571                                          "Error %d allocating resources for existing VFs\n",
10572                                          err);
10573                 }
10574         }
10575 #endif /* CONFIG_PCI_IOV */
10576
10577         pfs_found++;
10578
10579         i40e_dbg_pf_init(pf);
10580
10581         /* tell the firmware that we're starting */
10582         i40e_send_version(pf);
10583
10584         /* since everything's happy, start the service_task timer */
10585         mod_timer(&pf->service_timer,
10586                   round_jiffies(jiffies + pf->service_timer_period));
10587
10588 #ifdef I40E_FCOE
10589         /* create FCoE interface */
10590         i40e_fcoe_vsi_setup(pf);
10591
10592 #endif
10593 #define PCI_SPEED_SIZE 8
10594 #define PCI_WIDTH_SIZE 8
10595         /* Devices on the IOSF bus do not have this information
10596          * and will report PCI Gen 1 x 1 by default so don't bother
10597          * checking them.
10598          */
10599         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10600                 char speed[PCI_SPEED_SIZE] = "Unknown";
10601                 char width[PCI_WIDTH_SIZE] = "Unknown";
10602
10603                 /* Get the negotiated link width and speed from PCI config
10604                  * space
10605                  */
10606                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10607                                           &link_status);
10608
10609                 i40e_set_pci_config_data(hw, link_status);
10610
10611                 switch (hw->bus.speed) {
10612                 case i40e_bus_speed_8000:
10613                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10614                 case i40e_bus_speed_5000:
10615                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10616                 case i40e_bus_speed_2500:
10617                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10618                 default:
10619                         break;
10620                 }
10621                 switch (hw->bus.width) {
10622                 case i40e_bus_width_pcie_x8:
10623                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10624                 case i40e_bus_width_pcie_x4:
10625                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10626                 case i40e_bus_width_pcie_x2:
10627                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10628                 case i40e_bus_width_pcie_x1:
10629                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10630                 default:
10631                         break;
10632                 }
10633
10634                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10635                          speed, width);
10636
10637                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10638                     hw->bus.speed < i40e_bus_speed_8000) {
10639                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10640                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10641                 }
10642         }
10643
10644         /* get the requested speeds from the fw */
10645         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10646         if (err)
10647                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10648                         i40e_stat_str(&pf->hw, err),
10649                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10650         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10651
10652         /* get the supported phy types from the fw */
10653         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10654         if (err)
10655                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10656                         i40e_stat_str(&pf->hw, err),
10657                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10658         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10659
10660         /* Add a filter to drop all Flow control frames from any VSI from being
10661          * transmitted. By doing so we stop a malicious VF from sending out
10662          * PAUSE or PFC frames and potentially controlling traffic for other
10663          * PF/VF VSIs.
10664          * The FW can still send Flow control frames if enabled.
10665          */
10666         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10667                                                        pf->main_vsi_seid);
10668
10669         /* print a string summarizing features */
10670         i40e_print_features(pf);
10671
10672         return 0;
10673
10674         /* Unwind what we've done if something failed in the setup */
10675 err_vsis:
10676         set_bit(__I40E_DOWN, &pf->state);
10677         i40e_clear_interrupt_scheme(pf);
10678         kfree(pf->vsi);
10679 err_switch_setup:
10680         i40e_reset_interrupt_capability(pf);
10681         del_timer_sync(&pf->service_timer);
10682 err_mac_addr:
10683 err_configure_lan_hmc:
10684         (void)i40e_shutdown_lan_hmc(hw);
10685 err_init_lan_hmc:
10686         kfree(pf->qp_pile);
10687 err_sw_init:
10688 err_adminq_setup:
10689         (void)i40e_shutdown_adminq(hw);
10690 err_pf_reset:
10691         iounmap(hw->hw_addr);
10692 err_ioremap:
10693         kfree(pf);
10694 err_pf_alloc:
10695         pci_disable_pcie_error_reporting(pdev);
10696         pci_release_selected_regions(pdev,
10697                                      pci_select_bars(pdev, IORESOURCE_MEM));
10698 err_pci_reg:
10699 err_dma:
10700         pci_disable_device(pdev);
10701         return err;
10702 }
10703
10704 /**
10705  * i40e_remove - Device removal routine
10706  * @pdev: PCI device information struct
10707  *
10708  * i40e_remove is called by the PCI subsystem to alert the driver
10709  * that is should release a PCI device.  This could be caused by a
10710  * Hot-Plug event, or because the driver is going to be removed from
10711  * memory.
10712  **/
10713 static void i40e_remove(struct pci_dev *pdev)
10714 {
10715         struct i40e_pf *pf = pci_get_drvdata(pdev);
10716         struct i40e_hw *hw = &pf->hw;
10717         i40e_status ret_code;
10718         int i;
10719
10720         i40e_dbg_pf_exit(pf);
10721
10722         i40e_ptp_stop(pf);
10723
10724         /* Disable RSS in hw */
10725         wr32(hw, I40E_PFQF_HENA(0), 0);
10726         wr32(hw, I40E_PFQF_HENA(1), 0);
10727
10728         /* no more scheduling of any task */
10729         set_bit(__I40E_DOWN, &pf->state);
10730         del_timer_sync(&pf->service_timer);
10731         cancel_work_sync(&pf->service_task);
10732         i40e_fdir_teardown(pf);
10733
10734         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10735                 i40e_free_vfs(pf);
10736                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10737         }
10738
10739         i40e_fdir_teardown(pf);
10740
10741         /* If there is a switch structure or any orphans, remove them.
10742          * This will leave only the PF's VSI remaining.
10743          */
10744         for (i = 0; i < I40E_MAX_VEB; i++) {
10745                 if (!pf->veb[i])
10746                         continue;
10747
10748                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10749                     pf->veb[i]->uplink_seid == 0)
10750                         i40e_switch_branch_release(pf->veb[i]);
10751         }
10752
10753         /* Now we can shutdown the PF's VSI, just before we kill
10754          * adminq and hmc.
10755          */
10756         if (pf->vsi[pf->lan_vsi])
10757                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10758
10759         /* shutdown and destroy the HMC */
10760         if (pf->hw.hmc.hmc_obj) {
10761                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10762                 if (ret_code)
10763                         dev_warn(&pdev->dev,
10764                                  "Failed to destroy the HMC resources: %d\n",
10765                                  ret_code);
10766         }
10767
10768         /* shutdown the adminq */
10769         ret_code = i40e_shutdown_adminq(&pf->hw);
10770         if (ret_code)
10771                 dev_warn(&pdev->dev,
10772                          "Failed to destroy the Admin Queue resources: %d\n",
10773                          ret_code);
10774
10775         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10776         i40e_clear_interrupt_scheme(pf);
10777         for (i = 0; i < pf->num_alloc_vsi; i++) {
10778                 if (pf->vsi[i]) {
10779                         i40e_vsi_clear_rings(pf->vsi[i]);
10780                         i40e_vsi_clear(pf->vsi[i]);
10781                         pf->vsi[i] = NULL;
10782                 }
10783         }
10784
10785         for (i = 0; i < I40E_MAX_VEB; i++) {
10786                 kfree(pf->veb[i]);
10787                 pf->veb[i] = NULL;
10788         }
10789
10790         kfree(pf->qp_pile);
10791         kfree(pf->vsi);
10792
10793         iounmap(pf->hw.hw_addr);
10794         kfree(pf);
10795         pci_release_selected_regions(pdev,
10796                                      pci_select_bars(pdev, IORESOURCE_MEM));
10797
10798         pci_disable_pcie_error_reporting(pdev);
10799         pci_disable_device(pdev);
10800 }
10801
10802 /**
10803  * i40e_pci_error_detected - warning that something funky happened in PCI land
10804  * @pdev: PCI device information struct
10805  *
10806  * Called to warn that something happened and the error handling steps
10807  * are in progress.  Allows the driver to quiesce things, be ready for
10808  * remediation.
10809  **/
10810 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10811                                                 enum pci_channel_state error)
10812 {
10813         struct i40e_pf *pf = pci_get_drvdata(pdev);
10814
10815         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10816
10817         /* shutdown all operations */
10818         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10819                 rtnl_lock();
10820                 i40e_prep_for_reset(pf);
10821                 rtnl_unlock();
10822         }
10823
10824         /* Request a slot reset */
10825         return PCI_ERS_RESULT_NEED_RESET;
10826 }
10827
10828 /**
10829  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10830  * @pdev: PCI device information struct
10831  *
10832  * Called to find if the driver can work with the device now that
10833  * the pci slot has been reset.  If a basic connection seems good
10834  * (registers are readable and have sane content) then return a
10835  * happy little PCI_ERS_RESULT_xxx.
10836  **/
10837 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10838 {
10839         struct i40e_pf *pf = pci_get_drvdata(pdev);
10840         pci_ers_result_t result;
10841         int err;
10842         u32 reg;
10843
10844         dev_dbg(&pdev->dev, "%s\n", __func__);
10845         if (pci_enable_device_mem(pdev)) {
10846                 dev_info(&pdev->dev,
10847                          "Cannot re-enable PCI device after reset.\n");
10848                 result = PCI_ERS_RESULT_DISCONNECT;
10849         } else {
10850                 pci_set_master(pdev);
10851                 pci_restore_state(pdev);
10852                 pci_save_state(pdev);
10853                 pci_wake_from_d3(pdev, false);
10854
10855                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10856                 if (reg == 0)
10857                         result = PCI_ERS_RESULT_RECOVERED;
10858                 else
10859                         result = PCI_ERS_RESULT_DISCONNECT;
10860         }
10861
10862         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10863         if (err) {
10864                 dev_info(&pdev->dev,
10865                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10866                          err);
10867                 /* non-fatal, continue */
10868         }
10869
10870         return result;
10871 }
10872
10873 /**
10874  * i40e_pci_error_resume - restart operations after PCI error recovery
10875  * @pdev: PCI device information struct
10876  *
10877  * Called to allow the driver to bring things back up after PCI error
10878  * and/or reset recovery has finished.
10879  **/
10880 static void i40e_pci_error_resume(struct pci_dev *pdev)
10881 {
10882         struct i40e_pf *pf = pci_get_drvdata(pdev);
10883
10884         dev_dbg(&pdev->dev, "%s\n", __func__);
10885         if (test_bit(__I40E_SUSPENDED, &pf->state))
10886                 return;
10887
10888         rtnl_lock();
10889         i40e_handle_reset_warning(pf);
10890         rtnl_unlock();
10891 }
10892
10893 /**
10894  * i40e_shutdown - PCI callback for shutting down
10895  * @pdev: PCI device information struct
10896  **/
10897 static void i40e_shutdown(struct pci_dev *pdev)
10898 {
10899         struct i40e_pf *pf = pci_get_drvdata(pdev);
10900         struct i40e_hw *hw = &pf->hw;
10901
10902         set_bit(__I40E_SUSPENDED, &pf->state);
10903         set_bit(__I40E_DOWN, &pf->state);
10904         rtnl_lock();
10905         i40e_prep_for_reset(pf);
10906         rtnl_unlock();
10907
10908         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10909         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10910
10911         del_timer_sync(&pf->service_timer);
10912         cancel_work_sync(&pf->service_task);
10913         i40e_fdir_teardown(pf);
10914
10915         rtnl_lock();
10916         i40e_prep_for_reset(pf);
10917         rtnl_unlock();
10918
10919         wr32(hw, I40E_PFPM_APM,
10920              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10921         wr32(hw, I40E_PFPM_WUFC,
10922              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10923
10924         i40e_clear_interrupt_scheme(pf);
10925
10926         if (system_state == SYSTEM_POWER_OFF) {
10927                 pci_wake_from_d3(pdev, pf->wol_en);
10928                 pci_set_power_state(pdev, PCI_D3hot);
10929         }
10930 }
10931
10932 #ifdef CONFIG_PM
10933 /**
10934  * i40e_suspend - PCI callback for moving to D3
10935  * @pdev: PCI device information struct
10936  **/
10937 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10938 {
10939         struct i40e_pf *pf = pci_get_drvdata(pdev);
10940         struct i40e_hw *hw = &pf->hw;
10941
10942         set_bit(__I40E_SUSPENDED, &pf->state);
10943         set_bit(__I40E_DOWN, &pf->state);
10944
10945         rtnl_lock();
10946         i40e_prep_for_reset(pf);
10947         rtnl_unlock();
10948
10949         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10950         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10951
10952         pci_wake_from_d3(pdev, pf->wol_en);
10953         pci_set_power_state(pdev, PCI_D3hot);
10954
10955         return 0;
10956 }
10957
10958 /**
10959  * i40e_resume - PCI callback for waking up from D3
10960  * @pdev: PCI device information struct
10961  **/
10962 static int i40e_resume(struct pci_dev *pdev)
10963 {
10964         struct i40e_pf *pf = pci_get_drvdata(pdev);
10965         u32 err;
10966
10967         pci_set_power_state(pdev, PCI_D0);
10968         pci_restore_state(pdev);
10969         /* pci_restore_state() clears dev->state_saves, so
10970          * call pci_save_state() again to restore it.
10971          */
10972         pci_save_state(pdev);
10973
10974         err = pci_enable_device_mem(pdev);
10975         if (err) {
10976                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10977                 return err;
10978         }
10979         pci_set_master(pdev);
10980
10981         /* no wakeup events while running */
10982         pci_wake_from_d3(pdev, false);
10983
10984         /* handling the reset will rebuild the device state */
10985         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10986                 clear_bit(__I40E_DOWN, &pf->state);
10987                 rtnl_lock();
10988                 i40e_reset_and_rebuild(pf, false);
10989                 rtnl_unlock();
10990         }
10991
10992         return 0;
10993 }
10994
10995 #endif
10996 static const struct pci_error_handlers i40e_err_handler = {
10997         .error_detected = i40e_pci_error_detected,
10998         .slot_reset = i40e_pci_error_slot_reset,
10999         .resume = i40e_pci_error_resume,
11000 };
11001
11002 static struct pci_driver i40e_driver = {
11003         .name     = i40e_driver_name,
11004         .id_table = i40e_pci_tbl,
11005         .probe    = i40e_probe,
11006         .remove   = i40e_remove,
11007 #ifdef CONFIG_PM
11008         .suspend  = i40e_suspend,
11009         .resume   = i40e_resume,
11010 #endif
11011         .shutdown = i40e_shutdown,
11012         .err_handler = &i40e_err_handler,
11013         .sriov_configure = i40e_pci_sriov_configure,
11014 };
11015
11016 /**
11017  * i40e_init_module - Driver registration routine
11018  *
11019  * i40e_init_module is the first routine called when the driver is
11020  * loaded. All it does is register with the PCI subsystem.
11021  **/
11022 static int __init i40e_init_module(void)
11023 {
11024         pr_info("%s: %s - version %s\n", i40e_driver_name,
11025                 i40e_driver_string, i40e_driver_version_str);
11026         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11027
11028         i40e_dbg_init();
11029         return pci_register_driver(&i40e_driver);
11030 }
11031 module_init(i40e_init_module);
11032
11033 /**
11034  * i40e_exit_module - Driver exit cleanup routine
11035  *
11036  * i40e_exit_module is called just before the driver is removed
11037  * from memory.
11038  **/
11039 static void __exit i40e_exit_module(void)
11040 {
11041         pci_unregister_driver(&i40e_driver);
11042         i40e_dbg_exit();
11043 }
11044 module_exit(i40e_exit_module);