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 21
  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                 } else {
 220                         /* not enough, so skip over it and continue looking */
 221                         i += j;
 222                 }
 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                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 847                                    pf->stat_offsets_loaded,
 848                                    &osd->priority_xoff_rx[i],
 849                                    &nsd->priority_xoff_rx[i]);
 850
 851                 /* No new PFC xoff rx */
 852                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 853                         continue;
 854                 /* Get the TC for given priority */
 855                 tc = dcb_cfg->etscfg.prioritytable[i];
 856                 xoff[tc] = true;
 857         }
 858 }
 859
 860 /**
 861  * i40e_update_vsi_stats - Update the vsi statistics counters.
 862  * @vsi: the VSI to be updated
 863  *
 864  * There are a few instances where we store the same stat in a
 865  * couple of different structs.  This is partly because we have
 866  * the netdev stats that need to be filled out, which is slightly
 867  * different from the "eth_stats" defined by the chip and used in
 868  * VF communications.  We sort it out here.
 869  **/
 870 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 871 {
 872         struct i40e_pf *pf = vsi->back;
 873         struct rtnl_link_stats64 *ons;
 874         struct rtnl_link_stats64 *ns;   /* netdev stats */
 875         struct i40e_eth_stats *oes;
 876         struct i40e_eth_stats *es;     /* device's eth stats */
 877         u32 tx_restart, tx_busy;
 878         struct i40e_ring *p;
 879         u32 rx_page, rx_buf;
 880         u64 bytes, packets;
 881         unsigned int start;
 882         u64 rx_p, rx_b;
 883         u64 tx_p, tx_b;
 884         u16 q;
 885
 886         if (test_bit(__I40E_DOWN, &vsi->state) ||
 887             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 888                 return;
 889
 890         ns = i40e_get_vsi_stats_struct(vsi);
 891         ons = &vsi->net_stats_offsets;
 892         es = &vsi->eth_stats;
 893         oes = &vsi->eth_stats_offsets;
 894
 895         /* Gather up the netdev and vsi stats that the driver collects
 896          * on the fly during packet processing
 897          */
 898         rx_b = rx_p = 0;
 899         tx_b = tx_p = 0;
 900         tx_restart = tx_busy = 0;
 901         rx_page = 0;
 902         rx_buf = 0;
 903         rcu_read_lock();
 904         for (q = 0; q < vsi->num_queue_pairs; q++) {
 905                 /* locate Tx ring */
 906                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 907
 908                 do {
 909                         start = u64_stats_fetch_begin_irq(&p->syncp);
 910                         packets = p->stats.packets;
 911                         bytes = p->stats.bytes;
 912                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 913                 tx_b += bytes;
 914                 tx_p += packets;
 915                 tx_restart += p->tx_stats.restart_queue;
 916                 tx_busy += p->tx_stats.tx_busy;
 917
 918                 /* Rx queue is part of the same block as Tx queue */
 919                 p = &p[1];
 920                 do {
 921                         start = u64_stats_fetch_begin_irq(&p->syncp);
 922                         packets = p->stats.packets;
 923                         bytes = p->stats.bytes;
 924                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 925                 rx_b += bytes;
 926                 rx_p += packets;
 927                 rx_buf += p->rx_stats.alloc_buff_failed;
 928                 rx_page += p->rx_stats.alloc_page_failed;
 929         }
 930         rcu_read_unlock();
 931         vsi->tx_restart = tx_restart;
 932         vsi->tx_busy = tx_busy;
 933         vsi->rx_page_failed = rx_page;
 934         vsi->rx_buf_failed = rx_buf;
 935
 936         ns->rx_packets = rx_p;
 937         ns->rx_bytes = rx_b;
 938         ns->tx_packets = tx_p;
 939         ns->tx_bytes = tx_b;
 940
 941         /* update netdev stats from eth stats */
 942         i40e_update_eth_stats(vsi);
 943         ons->tx_errors = oes->tx_errors;
 944         ns->tx_errors = es->tx_errors;
 945         ons->multicast = oes->rx_multicast;
 946         ns->multicast = es->rx_multicast;
 947         ons->rx_dropped = oes->rx_discards;
 948         ns->rx_dropped = es->rx_discards;
 949         ons->tx_dropped = oes->tx_discards;
 950         ns->tx_dropped = es->tx_discards;
 951
 952         /* pull in a couple PF stats if this is the main vsi */
 953         if (vsi == pf->vsi[pf->lan_vsi]) {
 954                 ns->rx_crc_errors = pf->stats.crc_errors;
 955                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 956                 ns->rx_length_errors = pf->stats.rx_length_errors;
 957         }
 958 }
 959
 960 /**
 961  * i40e_update_pf_stats - Update the PF statistics counters.
 962  * @pf: the PF to be updated
 963  **/
 964 static void i40e_update_pf_stats(struct i40e_pf *pf)
 965 {
 966         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 967         struct i40e_hw_port_stats *nsd = &pf->stats;
 968         struct i40e_hw *hw = &pf->hw;
 969         u32 val;
 970         int i;
 971
 972         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 973                            I40E_GLPRT_GORCL(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 976         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 977                            I40E_GLPRT_GOTCL(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 980         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->eth.rx_discards,
 983                            &nsd->eth.rx_discards);
 984         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 985                            I40E_GLPRT_UPRCL(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->eth.rx_unicast,
 988                            &nsd->eth.rx_unicast);
 989         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 990                            I40E_GLPRT_MPRCL(hw->port),
 991                            pf->stat_offsets_loaded,
 992                            &osd->eth.rx_multicast,
 993                            &nsd->eth.rx_multicast);
 994         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 995                            I40E_GLPRT_BPRCL(hw->port),
 996                            pf->stat_offsets_loaded,
 997                            &osd->eth.rx_broadcast,
 998                            &nsd->eth.rx_broadcast);
 999         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1000                            I40E_GLPRT_UPTCL(hw->port),
1001                            pf->stat_offsets_loaded,
1002                            &osd->eth.tx_unicast,
1003                            &nsd->eth.tx_unicast);
1004         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1005                            I40E_GLPRT_MPTCL(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->eth.tx_multicast,
1008                            &nsd->eth.tx_multicast);
1009         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1010                            I40E_GLPRT_BPTCL(hw->port),
1011                            pf->stat_offsets_loaded,
1012                            &osd->eth.tx_broadcast,
1013                            &nsd->eth.tx_broadcast);
1014
1015         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->tx_dropped_link_down,
1018                            &nsd->tx_dropped_link_down);
1019
1020         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->crc_errors, &nsd->crc_errors);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->illegal_bytes, &nsd->illegal_bytes);
1027
1028         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->mac_local_faults,
1031                            &nsd->mac_local_faults);
1032         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->mac_remote_faults,
1035                            &nsd->mac_remote_faults);
1036
1037         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_length_errors,
1040                            &nsd->rx_length_errors);
1041
1042         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->link_xon_rx, &nsd->link_xon_rx);
1045         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->link_xon_tx, &nsd->link_xon_tx);
1048         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1049         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1052
1053         for (i = 0; i < 8; i++) {
1054                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1055                                    pf->stat_offsets_loaded,
1056                                    &osd->priority_xon_rx[i],
1057                                    &nsd->priority_xon_rx[i]);
1058                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1059                                    pf->stat_offsets_loaded,
1060                                    &osd->priority_xon_tx[i],
1061                                    &nsd->priority_xon_tx[i]);
1062                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1063                                    pf->stat_offsets_loaded,
1064                                    &osd->priority_xoff_tx[i],
1065                                    &nsd->priority_xoff_tx[i]);
1066                 i40e_stat_update32(hw,
1067                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1068                                    pf->stat_offsets_loaded,
1069                                    &osd->priority_xon_2_xoff[i],
1070                                    &nsd->priority_xon_2_xoff[i]);
1071         }
1072
1073         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1074                            I40E_GLPRT_PRC64L(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_size_64, &nsd->rx_size_64);
1077         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1078                            I40E_GLPRT_PRC127L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_size_127, &nsd->rx_size_127);
1081         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1082                            I40E_GLPRT_PRC255L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->rx_size_255, &nsd->rx_size_255);
1085         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1086                            I40E_GLPRT_PRC511L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_size_511, &nsd->rx_size_511);
1089         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1090                            I40E_GLPRT_PRC1023L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->rx_size_1023, &nsd->rx_size_1023);
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1094                            I40E_GLPRT_PRC1522L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_1522, &nsd->rx_size_1522);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1098                            I40E_GLPRT_PRC9522L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_big, &nsd->rx_size_big);
1101
1102         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1103                            I40E_GLPRT_PTC64L(hw->port),
1104                            pf->stat_offsets_loaded,
1105                            &osd->tx_size_64, &nsd->tx_size_64);
1106         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1107                            I40E_GLPRT_PTC127L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->tx_size_127, &nsd->tx_size_127);
1110         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1111                            I40E_GLPRT_PTC255L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_size_255, &nsd->tx_size_255);
1114         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1115                            I40E_GLPRT_PTC511L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->tx_size_511, &nsd->tx_size_511);
1118         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1119                            I40E_GLPRT_PTC1023L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->tx_size_1023, &nsd->tx_size_1023);
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1123                            I40E_GLPRT_PTC1522L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_1522, &nsd->tx_size_1522);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1127                            I40E_GLPRT_PTC9522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_big, &nsd->tx_size_big);
1130
1131         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->rx_undersize, &nsd->rx_undersize);
1134         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->rx_fragments, &nsd->rx_fragments);
1137         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->rx_oversize, &nsd->rx_oversize);
1140         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_jabber, &nsd->rx_jabber);
1143
1144         /* FDIR stats */
1145         i40e_stat_update32(hw,
1146                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1147                            pf->stat_offsets_loaded,
1148                            &osd->fd_atr_match, &nsd->fd_atr_match);
1149         i40e_stat_update32(hw,
1150                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1151                            pf->stat_offsets_loaded,
1152                            &osd->fd_sb_match, &nsd->fd_sb_match);
1153         i40e_stat_update32(hw,
1154                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1155                       pf->stat_offsets_loaded,
1156                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1157
1158         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1159         nsd->tx_lpi_status =
1160                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1161                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1162         nsd->rx_lpi_status =
1163                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1164                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1165         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1166                            pf->stat_offsets_loaded,
1167                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1168         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1169                            pf->stat_offsets_loaded,
1170                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1171
1172         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1173             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1174                 nsd->fd_sb_status = true;
1175         else
1176                 nsd->fd_sb_status = false;
1177
1178         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1179             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1180                 nsd->fd_atr_status = true;
1181         else
1182                 nsd->fd_atr_status = false;
1183
1184         pf->stat_offsets_loaded = true;
1185 }
1186
1187 /**
1188  * i40e_update_stats - Update the various statistics counters.
1189  * @vsi: the VSI to be updated
1190  *
1191  * Update the various stats for this VSI and its related entities.
1192  **/
1193 void i40e_update_stats(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_pf *pf = vsi->back;
1196
1197         if (vsi == pf->vsi[pf->lan_vsi])
1198                 i40e_update_pf_stats(pf);
1199
1200         i40e_update_vsi_stats(vsi);
1201 #ifdef I40E_FCOE
1202         i40e_update_fcoe_stats(vsi);
1203 #endif
1204 }
1205
1206 /**
1207  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1208  * @vsi: the VSI to be searched
1209  * @macaddr: the MAC address
1210  * @vlan: the vlan
1211  * @is_vf: make sure its a VF filter, else doesn't matter
1212  * @is_netdev: make sure its a netdev filter, else doesn't matter
1213  *
1214  * Returns ptr to the filter object or NULL
1215  **/
1216 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1217                                                 u8 *macaddr, s16 vlan,
1218                                                 bool is_vf, bool is_netdev)
1219 {
1220         struct i40e_mac_filter *f;
1221
1222         if (!vsi || !macaddr)
1223                 return NULL;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1227                     (vlan == f->vlan)    &&
1228                     (!is_vf || f->is_vf) &&
1229                     (!is_netdev || f->is_netdev))
1230                         return f;
1231         }
1232         return NULL;
1233 }
1234
1235 /**
1236  * i40e_find_mac - Find a mac addr in the macvlan filters list
1237  * @vsi: the VSI to be searched
1238  * @macaddr: the MAC address we are searching for
1239  * @is_vf: make sure its a VF filter, else doesn't matter
1240  * @is_netdev: make sure its a netdev filter, else doesn't matter
1241  *
1242  * Returns the first filter with the provided MAC address or NULL if
1243  * MAC address was not found
1244  **/
1245 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1246                                       bool is_vf, bool is_netdev)
1247 {
1248         struct i40e_mac_filter *f;
1249
1250         if (!vsi || !macaddr)
1251                 return NULL;
1252
1253         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1254                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1255                     (!is_vf || f->is_vf) &&
1256                     (!is_netdev || f->is_netdev))
1257                         return f;
1258         }
1259         return NULL;
1260 }
1261
1262 /**
1263  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1264  * @vsi: the VSI to be searched
1265  *
1266  * Returns true if VSI is in vlan mode or false otherwise
1267  **/
1268 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1269 {
1270         struct i40e_mac_filter *f;
1271
1272         /* Only -1 for all the filters denotes not in vlan mode
1273          * so we have to go through all the list in order to make sure
1274          */
1275         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1276                 if (f->vlan >= 0 || vsi->info.pvid)
1277                         return true;
1278         }
1279
1280         return false;
1281 }
1282
1283 /**
1284  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1285  * @vsi: the VSI to be searched
1286  * @macaddr: the mac address to be filtered
1287  * @is_vf: true if it is a VF
1288  * @is_netdev: true if it is a netdev
1289  *
1290  * Goes through all the macvlan filters and adds a
1291  * macvlan filter for each unique vlan that already exists
1292  *
1293  * Returns first filter found on success, else NULL
1294  **/
1295 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1296                                              bool is_vf, bool is_netdev)
1297 {
1298         struct i40e_mac_filter *f;
1299
1300         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1301                 if (vsi->info.pvid)
1302                         f->vlan = le16_to_cpu(vsi->info.pvid);
1303                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1304                                       is_vf, is_netdev)) {
1305                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1306                                              is_vf, is_netdev))
1307                                 return NULL;
1308                 }
1309         }
1310
1311         return list_first_entry_or_null(&vsi->mac_filter_list,
1312                                         struct i40e_mac_filter, list);
1313 }
1314
1315 /**
1316  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1317  * @vsi: the PF Main VSI - inappropriate for any other VSI
1318  * @macaddr: the MAC address
1319  *
1320  * Some older firmware configurations set up a default promiscuous VLAN
1321  * filter that needs to be removed.
1322  **/
1323 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1324 {
1325         struct i40e_aqc_remove_macvlan_element_data element;
1326         struct i40e_pf *pf = vsi->back;
1327         i40e_status ret;
1328
1329         /* Only appropriate for the PF main VSI */
1330         if (vsi->type != I40E_VSI_MAIN)
1331                 return -EINVAL;
1332
1333         memset(&element, 0, sizeof(element));
1334         ether_addr_copy(element.mac_addr, macaddr);
1335         element.vlan_tag = 0;
1336         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1337                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1338         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1339         if (ret)
1340                 return -ENOENT;
1341
1342         return 0;
1343 }
1344
1345 /**
1346  * i40e_add_filter - Add a mac/vlan filter to the VSI
1347  * @vsi: the VSI to be searched
1348  * @macaddr: the MAC address
1349  * @vlan: the vlan
1350  * @is_vf: make sure its a VF filter, else doesn't matter
1351  * @is_netdev: make sure its a netdev filter, else doesn't matter
1352  *
1353  * Returns ptr to the filter object or NULL when no memory available.
1354  **/
1355 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1356                                         u8 *macaddr, s16 vlan,
1357                                         bool is_vf, bool is_netdev)
1358 {
1359         struct i40e_mac_filter *f;
1360
1361         if (!vsi || !macaddr)
1362                 return NULL;
1363
1364         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1365         if (!f) {
1366                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1367                 if (!f)
1368                         goto add_filter_out;
1369
1370                 ether_addr_copy(f->macaddr, macaddr);
1371                 f->vlan = vlan;
1372                 f->changed = true;
1373
1374                 INIT_LIST_HEAD(&f->list);
1375                 list_add(&f->list, &vsi->mac_filter_list);
1376         }
1377
1378         /* increment counter and add a new flag if needed */
1379         if (is_vf) {
1380                 if (!f->is_vf) {
1381                         f->is_vf = true;
1382                         f->counter++;
1383                 }
1384         } else if (is_netdev) {
1385                 if (!f->is_netdev) {
1386                         f->is_netdev = true;
1387                         f->counter++;
1388                 }
1389         } else {
1390                 f->counter++;
1391         }
1392
1393         /* changed tells sync_filters_subtask to
1394          * push the filter down to the firmware
1395          */
1396         if (f->changed) {
1397                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1398                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1399         }
1400
1401 add_filter_out:
1402         return f;
1403 }
1404
1405 /**
1406  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1407  * @vsi: the VSI to be searched
1408  * @macaddr: the MAC address
1409  * @vlan: the vlan
1410  * @is_vf: make sure it's a VF filter, else doesn't matter
1411  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1412  **/
1413 void i40e_del_filter(struct i40e_vsi *vsi,
1414                      u8 *macaddr, s16 vlan,
1415                      bool is_vf, bool is_netdev)
1416 {
1417         struct i40e_mac_filter *f;
1418
1419         if (!vsi || !macaddr)
1420                 return;
1421
1422         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1423         if (!f || f->counter == 0)
1424                 return;
1425
1426         if (is_vf) {
1427                 if (f->is_vf) {
1428                         f->is_vf = false;
1429                         f->counter--;
1430                 }
1431         } else if (is_netdev) {
1432                 if (f->is_netdev) {
1433                         f->is_netdev = false;
1434                         f->counter--;
1435                 }
1436         } else {
1437                 /* make sure we don't remove a filter in use by VF or netdev */
1438                 int min_f = 0;
1439                 min_f += (f->is_vf ? 1 : 0);
1440                 min_f += (f->is_netdev ? 1 : 0);
1441
1442                 if (f->counter > min_f)
1443                         f->counter--;
1444         }
1445
1446         /* counter == 0 tells sync_filters_subtask to
1447          * remove the filter from the firmware's list
1448          */
1449         if (f->counter == 0) {
1450                 f->changed = true;
1451                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1452                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1453         }
1454 }
1455
1456 /**
1457  * i40e_set_mac - NDO callback to set mac address
1458  * @netdev: network interface device structure
1459  * @p: pointer to an address structure
1460  *
1461  * Returns 0 on success, negative on failure
1462  **/
1463 #ifdef I40E_FCOE
1464 int i40e_set_mac(struct net_device *netdev, void *p)
1465 #else
1466 static int i40e_set_mac(struct net_device *netdev, void *p)
1467 #endif
1468 {
1469         struct i40e_netdev_priv *np = netdev_priv(netdev);
1470         struct i40e_vsi *vsi = np->vsi;
1471         struct i40e_pf *pf = vsi->back;
1472         struct i40e_hw *hw = &pf->hw;
1473         struct sockaddr *addr = p;
1474         struct i40e_mac_filter *f;
1475
1476         if (!is_valid_ether_addr(addr->sa_data))
1477                 return -EADDRNOTAVAIL;
1478
1479         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1480                 netdev_info(netdev, "already using mac address %pM\n",
1481                             addr->sa_data);
1482                 return 0;
1483         }
1484
1485         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1486             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1487                 return -EADDRNOTAVAIL;
1488
1489         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1490                 netdev_info(netdev, "returning to hw mac address %pM\n",
1491                             hw->mac.addr);
1492         else
1493                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1494
1495         if (vsi->type == I40E_VSI_MAIN) {
1496                 i40e_status ret;
1497                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1498                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1499                                                 addr->sa_data, NULL);
1500                 if (ret) {
1501                         netdev_info(netdev,
1502                                     "Addr change for Main VSI failed: %d\n",
1503                                     ret);
1504                         return -EADDRNOTAVAIL;
1505                 }
1506         }
1507
1508         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1509                 struct i40e_aqc_remove_macvlan_element_data element;
1510
1511                 memset(&element, 0, sizeof(element));
1512                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1513                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1514                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1515         } else {
1516                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1517                                 false, false);
1518         }
1519
1520         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1521                 struct i40e_aqc_add_macvlan_element_data element;
1522
1523                 memset(&element, 0, sizeof(element));
1524                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1525                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1526                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1527         } else {
1528                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1529                                     false, false);
1530                 if (f)
1531                         f->is_laa = true;
1532         }
1533
1534         i40e_sync_vsi_filters(vsi, false);
1535         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1536
1537         return 0;
1538 }
1539
1540 /**
1541  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1542  * @vsi: the VSI being setup
1543  * @ctxt: VSI context structure
1544  * @enabled_tc: Enabled TCs bitmap
1545  * @is_add: True if called before Add VSI
1546  *
1547  * Setup VSI queue mapping for enabled traffic classes.
1548  **/
1549 #ifdef I40E_FCOE
1550 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1551                               struct i40e_vsi_context *ctxt,
1552                               u8 enabled_tc,
1553                               bool is_add)
1554 #else
1555 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1556                                      struct i40e_vsi_context *ctxt,
1557                                      u8 enabled_tc,
1558                                      bool is_add)
1559 #endif
1560 {
1561         struct i40e_pf *pf = vsi->back;
1562         u16 sections = 0;
1563         u8 netdev_tc = 0;
1564         u16 numtc = 0;
1565         u16 qcount;
1566         u8 offset;
1567         u16 qmap;
1568         int i;
1569         u16 num_tc_qps = 0;
1570
1571         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1572         offset = 0;
1573
1574         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1575                 /* Find numtc from enabled TC bitmap */
1576                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1577                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1578                                 numtc++;
1579                 }
1580                 if (!numtc) {
1581                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1582                         numtc = 1;
1583                 }
1584         } else {
1585                 /* At least TC0 is enabled in case of non-DCB case */
1586                 numtc = 1;
1587         }
1588
1589         vsi->tc_config.numtc = numtc;
1590         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1591         /* Number of queues per enabled TC */
1592         /* In MFP case we can have a much lower count of MSIx
1593          * vectors available and so we need to lower the used
1594          * q count.
1595          */
1596         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1597                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1598         else
1599                 qcount = vsi->alloc_queue_pairs;
1600         num_tc_qps = qcount / numtc;
1601         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1602
1603         /* Setup queue offset/count for all TCs for given VSI */
1604         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1605                 /* See if the given TC is enabled for the given VSI */
1606                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1607                         /* TC is enabled */
1608                         int pow, num_qps;
1609
1610                         switch (vsi->type) {
1611                         case I40E_VSI_MAIN:
1612                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1613                                 break;
1614 #ifdef I40E_FCOE
1615                         case I40E_VSI_FCOE:
1616                                 qcount = num_tc_qps;
1617                                 break;
1618 #endif
1619                         case I40E_VSI_FDIR:
1620                         case I40E_VSI_SRIOV:
1621                         case I40E_VSI_VMDQ2:
1622                         default:
1623                                 qcount = num_tc_qps;
1624                                 WARN_ON(i != 0);
1625                                 break;
1626                         }
1627                         vsi->tc_config.tc_info[i].qoffset = offset;
1628                         vsi->tc_config.tc_info[i].qcount = qcount;
1629
1630                         /* find the next higher power-of-2 of num queue pairs */
1631                         num_qps = qcount;
1632                         pow = 0;
1633                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1634                                 pow++;
1635                                 num_qps >>= 1;
1636                         }
1637
1638                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1639                         qmap =
1640                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1641                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1642
1643                         offset += qcount;
1644                 } else {
1645                         /* TC is not enabled so set the offset to
1646                          * default queue and allocate one queue
1647                          * for the given TC.
1648                          */
1649                         vsi->tc_config.tc_info[i].qoffset = 0;
1650                         vsi->tc_config.tc_info[i].qcount = 1;
1651                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1652
1653                         qmap = 0;
1654                 }
1655                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1656         }
1657
1658         /* Set actual Tx/Rx queue pairs */
1659         vsi->num_queue_pairs = offset;
1660         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1661                 if (vsi->req_queue_pairs > 0)
1662                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1663                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1664                         vsi->num_queue_pairs = pf->num_lan_msix;
1665         }
1666
1667         /* Scheduler section valid can only be set for ADD VSI */
1668         if (is_add) {
1669                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1670
1671                 ctxt->info.up_enable_bits = enabled_tc;
1672         }
1673         if (vsi->type == I40E_VSI_SRIOV) {
1674                 ctxt->info.mapping_flags |=
1675                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1676                 for (i = 0; i < vsi->num_queue_pairs; i++)
1677                         ctxt->info.queue_mapping[i] =
1678                                                cpu_to_le16(vsi->base_queue + i);
1679         } else {
1680                 ctxt->info.mapping_flags |=
1681                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1682                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1683         }
1684         ctxt->info.valid_sections |= cpu_to_le16(sections);
1685 }
1686
1687 /**
1688  * i40e_set_rx_mode - NDO callback to set the netdev filters
1689  * @netdev: network interface device structure
1690  **/
1691 #ifdef I40E_FCOE
1692 void i40e_set_rx_mode(struct net_device *netdev)
1693 #else
1694 static void i40e_set_rx_mode(struct net_device *netdev)
1695 #endif
1696 {
1697         struct i40e_netdev_priv *np = netdev_priv(netdev);
1698         struct i40e_mac_filter *f, *ftmp;
1699         struct i40e_vsi *vsi = np->vsi;
1700         struct netdev_hw_addr *uca;
1701         struct netdev_hw_addr *mca;
1702         struct netdev_hw_addr *ha;
1703
1704         /* add addr if not already in the filter list */
1705         netdev_for_each_uc_addr(uca, netdev) {
1706                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1707                         if (i40e_is_vsi_in_vlan(vsi))
1708                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1709                                                      false, true);
1710                         else
1711                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1712                                                 false, true);
1713                 }
1714         }
1715
1716         netdev_for_each_mc_addr(mca, netdev) {
1717                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1718                         if (i40e_is_vsi_in_vlan(vsi))
1719                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1720                                                      false, true);
1721                         else
1722                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1723                                                 false, true);
1724                 }
1725         }
1726
1727         /* remove filter if not in netdev list */
1728         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1729                 bool found = false;
1730
1731                 if (!f->is_netdev)
1732                         continue;
1733
1734                 if (is_multicast_ether_addr(f->macaddr)) {
1735                         netdev_for_each_mc_addr(mca, netdev) {
1736                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1737                                         found = true;
1738                                         break;
1739                                 }
1740                         }
1741                 } else {
1742                         netdev_for_each_uc_addr(uca, netdev) {
1743                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1744                                         found = true;
1745                                         break;
1746                                 }
1747                         }
1748
1749                         for_each_dev_addr(netdev, ha) {
1750                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1751                                         found = true;
1752                                         break;
1753                                 }
1754                         }
1755                 }
1756                 if (!found)
1757                         i40e_del_filter(
1758                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1759         }
1760
1761         /* check for other flag changes */
1762         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1763                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1764                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1765         }
1766 }
1767
1768 /**
1769  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1770  * @vsi: ptr to the VSI
1771  * @grab_rtnl: whether RTNL needs to be grabbed
1772  *
1773  * Push any outstanding VSI filter changes through the AdminQ.
1774  *
1775  * Returns 0 or error value
1776  **/
1777 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1778 {
1779         struct i40e_mac_filter *f, *ftmp;
1780         bool promisc_forced_on = false;
1781         bool add_happened = false;
1782         int filter_list_len = 0;
1783         u32 changed_flags = 0;
1784         i40e_status ret = 0;
1785         struct i40e_pf *pf;
1786         int num_add = 0;
1787         int num_del = 0;
1788         int aq_err = 0;
1789         u16 cmd_flags;
1790
1791         /* empty array typed pointers, kcalloc later */
1792         struct i40e_aqc_add_macvlan_element_data *add_list;
1793         struct i40e_aqc_remove_macvlan_element_data *del_list;
1794
1795         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1796                 usleep_range(1000, 2000);
1797         pf = vsi->back;
1798
1799         if (vsi->netdev) {
1800                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1801                 vsi->current_netdev_flags = vsi->netdev->flags;
1802         }
1803
1804         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1805                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1806
1807                 filter_list_len = pf->hw.aq.asq_buf_size /
1808                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1809                 del_list = kcalloc(filter_list_len,
1810                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1811                             GFP_KERNEL);
1812                 if (!del_list)
1813                         return -ENOMEM;
1814
1815                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1816                         if (!f->changed)
1817                                 continue;
1818
1819                         if (f->counter != 0)
1820                                 continue;
1821                         f->changed = false;
1822                         cmd_flags = 0;
1823
1824                         /* add to delete list */
1825                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1826                         del_list[num_del].vlan_tag =
1827                                 cpu_to_le16((u16)(f->vlan ==
1828                                             I40E_VLAN_ANY ? 0 : f->vlan));
1829
1830                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1831                         del_list[num_del].flags = cmd_flags;
1832                         num_del++;
1833
1834                         /* unlink from filter list */
1835                         list_del(&f->list);
1836                         kfree(f);
1837
1838                         /* flush a full buffer */
1839                         if (num_del == filter_list_len) {
1840                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1841                                                   vsi->seid, del_list, num_del,
1842                                                   NULL);
1843                                 aq_err = pf->hw.aq.asq_last_status;
1844                                 num_del = 0;
1845                                 memset(del_list, 0, sizeof(*del_list));
1846
1847                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1848                                         dev_info(&pf->pdev->dev,
1849                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1850                                                  i40e_stat_str(&pf->hw, ret),
1851                                                  i40e_aq_str(&pf->hw, aq_err));
1852                         }
1853                 }
1854                 if (num_del) {
1855                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1856                                                      del_list, num_del, NULL);
1857                         aq_err = pf->hw.aq.asq_last_status;
1858                         num_del = 0;
1859
1860                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1861                                 dev_info(&pf->pdev->dev,
1862                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1863                                          i40e_stat_str(&pf->hw, ret),
1864                                          i40e_aq_str(&pf->hw, aq_err));
1865                 }
1866
1867                 kfree(del_list);
1868                 del_list = NULL;
1869
1870                 /* do all the adds now */
1871                 filter_list_len = pf->hw.aq.asq_buf_size /
1872                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1873                 add_list = kcalloc(filter_list_len,
1874                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1875                                GFP_KERNEL);
1876                 if (!add_list)
1877                         return -ENOMEM;
1878
1879                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1880                         if (!f->changed)
1881                                 continue;
1882
1883                         if (f->counter == 0)
1884                                 continue;
1885                         f->changed = false;
1886                         add_happened = true;
1887                         cmd_flags = 0;
1888
1889                         /* add to add array */
1890                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1891                         add_list[num_add].vlan_tag =
1892                                 cpu_to_le16(
1893                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1894                         add_list[num_add].queue_number = 0;
1895
1896                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1897                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1898                         num_add++;
1899
1900                         /* flush a full buffer */
1901                         if (num_add == filter_list_len) {
1902                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1903                                                           add_list, num_add,
1904                                                           NULL);
1905                                 aq_err = pf->hw.aq.asq_last_status;
1906                                 num_add = 0;
1907
1908                                 if (ret)
1909                                         break;
1910                                 memset(add_list, 0, sizeof(*add_list));
1911                         }
1912                 }
1913                 if (num_add) {
1914                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1915                                                   add_list, num_add, NULL);
1916                         aq_err = pf->hw.aq.asq_last_status;
1917                         num_add = 0;
1918                 }
1919                 kfree(add_list);
1920                 add_list = NULL;
1921
1922                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1923                         dev_info(&pf->pdev->dev,
1924                                  "add filter failed, err %s aq_err %s\n",
1925                                  i40e_stat_str(&pf->hw, ret),
1926                                  i40e_aq_str(&pf->hw, aq_err));
1927                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1928                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1929                                       &vsi->state)) {
1930                                 promisc_forced_on = true;
1931                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1932                                         &vsi->state);
1933                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1934                         }
1935                 }
1936         }
1937
1938         /* check for changes in promiscuous modes */
1939         if (changed_flags & IFF_ALLMULTI) {
1940                 bool cur_multipromisc;
1941                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1942                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1943                                                             vsi->seid,
1944                                                             cur_multipromisc,
1945                                                             NULL);
1946                 if (ret)
1947                         dev_info(&pf->pdev->dev,
1948                                  "set multi promisc failed, err %s aq_err %s\n",
1949                                  i40e_stat_str(&pf->hw, ret),
1950                                  i40e_aq_str(&pf->hw,
1951                                              pf->hw.aq.asq_last_status));
1952         }
1953         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1954                 bool cur_promisc;
1955                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1956                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1957                                         &vsi->state));
1958                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1959                         /* set defport ON for Main VSI instead of true promisc
1960                          * this way we will get all unicast/multicast and VLAN
1961                          * promisc behavior but will not get VF or VMDq traffic
1962                          * replicated on the Main VSI.
1963                          */
1964                         if (pf->cur_promisc != cur_promisc) {
1965                                 pf->cur_promisc = cur_promisc;
1966                                 if (grab_rtnl)
1967                                         i40e_do_reset_safe(pf,
1968                                                 BIT(__I40E_PF_RESET_REQUESTED));
1969                                 else
1970                                         i40e_do_reset(pf,
1971                                                 BIT(__I40E_PF_RESET_REQUESTED));
1972                         }
1973                 } else {
1974                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1975                                                           &vsi->back->hw,
1976                                                           vsi->seid,
1977                                                           cur_promisc, NULL);
1978                         if (ret)
1979                                 dev_info(&pf->pdev->dev,
1980                                          "set unicast promisc failed, err %d, aq_err %d\n",
1981                                          ret, pf->hw.aq.asq_last_status);
1982                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1983                                                           &vsi->back->hw,
1984                                                           vsi->seid,
1985                                                           cur_promisc, NULL);
1986                         if (ret)
1987                                 dev_info(&pf->pdev->dev,
1988                                          "set multicast promisc failed, err %d, aq_err %d\n",
1989                                          ret, pf->hw.aq.asq_last_status);
1990                 }
1991                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1992                                                 vsi->seid,
1993                                                 cur_promisc, NULL);
1994                 if (ret)
1995                         dev_info(&pf->pdev->dev,
1996                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1997                                  i40e_stat_str(&pf->hw, ret),
1998                                  i40e_aq_str(&pf->hw,
1999                                              pf->hw.aq.asq_last_status));
2000         }
2001
2002         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2003         return 0;
2004 }
2005
2006 /**
2007  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2008  * @pf: board private structure
2009  **/
2010 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2011 {
2012         int v;
2013
2014         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2015                 return;
2016         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2017
2018         for (v = 0; v < pf->num_alloc_vsi; v++) {
2019                 if (pf->vsi[v] &&
2020                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2021                         i40e_sync_vsi_filters(pf->vsi[v], true);
2022         }
2023 }
2024
2025 /**
2026  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2027  * @netdev: network interface device structure
2028  * @new_mtu: new value for maximum frame size
2029  *
2030  * Returns 0 on success, negative on failure
2031  **/
2032 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2033 {
2034         struct i40e_netdev_priv *np = netdev_priv(netdev);
2035         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2036         struct i40e_vsi *vsi = np->vsi;
2037
2038         /* MTU < 68 is an error and causes problems on some kernels */
2039         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2040                 return -EINVAL;
2041
2042         netdev_info(netdev, "changing MTU from %d to %d\n",
2043                     netdev->mtu, new_mtu);
2044         netdev->mtu = new_mtu;
2045         if (netif_running(netdev))
2046                 i40e_vsi_reinit_locked(vsi);
2047
2048         return 0;
2049 }
2050
2051 /**
2052  * i40e_ioctl - Access the hwtstamp interface
2053  * @netdev: network interface device structure
2054  * @ifr: interface request data
2055  * @cmd: ioctl command
2056  **/
2057 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2058 {
2059         struct i40e_netdev_priv *np = netdev_priv(netdev);
2060         struct i40e_pf *pf = np->vsi->back;
2061
2062         switch (cmd) {
2063         case SIOCGHWTSTAMP:
2064                 return i40e_ptp_get_ts_config(pf, ifr);
2065         case SIOCSHWTSTAMP:
2066                 return i40e_ptp_set_ts_config(pf, ifr);
2067         default:
2068                 return -EOPNOTSUPP;
2069         }
2070 }
2071
2072 /**
2073  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2074  * @vsi: the vsi being adjusted
2075  **/
2076 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2077 {
2078         struct i40e_vsi_context ctxt;
2079         i40e_status ret;
2080
2081         if ((vsi->info.valid_sections &
2082              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2083             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2084                 return;  /* already enabled */
2085
2086         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2087         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2088                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2089
2090         ctxt.seid = vsi->seid;
2091         ctxt.info = vsi->info;
2092         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2093         if (ret) {
2094                 dev_info(&vsi->back->pdev->dev,
2095                          "update vlan stripping failed, err %s aq_err %s\n",
2096                          i40e_stat_str(&vsi->back->hw, ret),
2097                          i40e_aq_str(&vsi->back->hw,
2098                                      vsi->back->hw.aq.asq_last_status));
2099         }
2100 }
2101
2102 /**
2103  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2104  * @vsi: the vsi being adjusted
2105  **/
2106 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2107 {
2108         struct i40e_vsi_context ctxt;
2109         i40e_status ret;
2110
2111         if ((vsi->info.valid_sections &
2112              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2113             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2114              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2115                 return;  /* already disabled */
2116
2117         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2118         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2119                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2120
2121         ctxt.seid = vsi->seid;
2122         ctxt.info = vsi->info;
2123         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2124         if (ret) {
2125                 dev_info(&vsi->back->pdev->dev,
2126                          "update vlan stripping failed, err %s aq_err %s\n",
2127                          i40e_stat_str(&vsi->back->hw, ret),
2128                          i40e_aq_str(&vsi->back->hw,
2129                                      vsi->back->hw.aq.asq_last_status));
2130         }
2131 }
2132
2133 /**
2134  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2135  * @netdev: network interface to be adjusted
2136  * @features: netdev features to test if VLAN offload is enabled or not
2137  **/
2138 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2139 {
2140         struct i40e_netdev_priv *np = netdev_priv(netdev);
2141         struct i40e_vsi *vsi = np->vsi;
2142
2143         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2144                 i40e_vlan_stripping_enable(vsi);
2145         else
2146                 i40e_vlan_stripping_disable(vsi);
2147 }
2148
2149 /**
2150  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2151  * @vsi: the vsi being configured
2152  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2153  **/
2154 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2155 {
2156         struct i40e_mac_filter *f, *add_f;
2157         bool is_netdev, is_vf;
2158
2159         is_vf = (vsi->type == I40E_VSI_SRIOV);
2160         is_netdev = !!(vsi->netdev);
2161
2162         if (is_netdev) {
2163                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2164                                         is_vf, is_netdev);
2165                 if (!add_f) {
2166                         dev_info(&vsi->back->pdev->dev,
2167                                  "Could not add vlan filter %d for %pM\n",
2168                                  vid, vsi->netdev->dev_addr);
2169                         return -ENOMEM;
2170                 }
2171         }
2172
2173         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2174                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2175                 if (!add_f) {
2176                         dev_info(&vsi->back->pdev->dev,
2177                                  "Could not add vlan filter %d for %pM\n",
2178                                  vid, f->macaddr);
2179                         return -ENOMEM;
2180                 }
2181         }
2182
2183         /* Now if we add a vlan tag, make sure to check if it is the first
2184          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2185          * with 0, so we now accept untagged and specified tagged traffic
2186          * (and not any taged and untagged)
2187          */
2188         if (vid > 0) {
2189                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2190                                                   I40E_VLAN_ANY,
2191                                                   is_vf, is_netdev)) {
2192                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2193                                         I40E_VLAN_ANY, is_vf, is_netdev);
2194                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2195                                                 is_vf, is_netdev);
2196                         if (!add_f) {
2197                                 dev_info(&vsi->back->pdev->dev,
2198                                          "Could not add filter 0 for %pM\n",
2199                                          vsi->netdev->dev_addr);
2200                                 return -ENOMEM;
2201                         }
2202                 }
2203         }
2204
2205         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2206         if (vid > 0 && !vsi->info.pvid) {
2207                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2208                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2209                                              is_vf, is_netdev)) {
2210                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2211                                                 is_vf, is_netdev);
2212                                 add_f = i40e_add_filter(vsi, f->macaddr,
2213                                                         0, is_vf, is_netdev);
2214                                 if (!add_f) {
2215                                         dev_info(&vsi->back->pdev->dev,
2216                                                  "Could not add filter 0 for %pM\n",
2217                                                  f->macaddr);
2218                                         return -ENOMEM;
2219                                 }
2220                         }
2221                 }
2222         }
2223
2224         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2225             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2226                 return 0;
2227
2228         return i40e_sync_vsi_filters(vsi, false);
2229 }
2230
2231 /**
2232  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2233  * @vsi: the vsi being configured
2234  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2235  *
2236  * Return: 0 on success or negative otherwise
2237  **/
2238 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2239 {
2240         struct net_device *netdev = vsi->netdev;
2241         struct i40e_mac_filter *f, *add_f;
2242         bool is_vf, is_netdev;
2243         int filter_count = 0;
2244
2245         is_vf = (vsi->type == I40E_VSI_SRIOV);
2246         is_netdev = !!(netdev);
2247
2248         if (is_netdev)
2249                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2250
2251         list_for_each_entry(f, &vsi->mac_filter_list, list)
2252                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2253
2254         /* go through all the filters for this VSI and if there is only
2255          * vid == 0 it means there are no other filters, so vid 0 must
2256          * be replaced with -1. This signifies that we should from now
2257          * on accept any traffic (with any tag present, or untagged)
2258          */
2259         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2260                 if (is_netdev) {
2261                         if (f->vlan &&
2262                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2263                                 filter_count++;
2264                 }
2265
2266                 if (f->vlan)
2267                         filter_count++;
2268         }
2269
2270         if (!filter_count && is_netdev) {
2271                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2272                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2273                                     is_vf, is_netdev);
2274                 if (!f) {
2275                         dev_info(&vsi->back->pdev->dev,
2276                                  "Could not add filter %d for %pM\n",
2277                                  I40E_VLAN_ANY, netdev->dev_addr);
2278                         return -ENOMEM;
2279                 }
2280         }
2281
2282         if (!filter_count) {
2283                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2284                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2285                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2286                                             is_vf, is_netdev);
2287                         if (!add_f) {
2288                                 dev_info(&vsi->back->pdev->dev,
2289                                          "Could not add filter %d for %pM\n",
2290                                          I40E_VLAN_ANY, f->macaddr);
2291                                 return -ENOMEM;
2292                         }
2293                 }
2294         }
2295
2296         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2297             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2298                 return 0;
2299
2300         return i40e_sync_vsi_filters(vsi, false);
2301 }
2302
2303 /**
2304  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2305  * @netdev: network interface to be adjusted
2306  * @vid: vlan id to be added
2307  *
2308  * net_device_ops implementation for adding vlan ids
2309  **/
2310 #ifdef I40E_FCOE
2311 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2312                          __always_unused __be16 proto, u16 vid)
2313 #else
2314 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2315                                 __always_unused __be16 proto, u16 vid)
2316 #endif
2317 {
2318         struct i40e_netdev_priv *np = netdev_priv(netdev);
2319         struct i40e_vsi *vsi = np->vsi;
2320         int ret = 0;
2321
2322         if (vid > 4095)
2323                 return -EINVAL;
2324
2325         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2326
2327         /* If the network stack called us with vid = 0 then
2328          * it is asking to receive priority tagged packets with
2329          * vlan id 0.  Our HW receives them by default when configured
2330          * to receive untagged packets so there is no need to add an
2331          * extra filter for vlan 0 tagged packets.
2332          */
2333         if (vid)
2334                 ret = i40e_vsi_add_vlan(vsi, vid);
2335
2336         if (!ret && (vid < VLAN_N_VID))
2337                 set_bit(vid, vsi->active_vlans);
2338
2339         return ret;
2340 }
2341
2342 /**
2343  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2344  * @netdev: network interface to be adjusted
2345  * @vid: vlan id to be removed
2346  *
2347  * net_device_ops implementation for removing vlan ids
2348  **/
2349 #ifdef I40E_FCOE
2350 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2351                           __always_unused __be16 proto, u16 vid)
2352 #else
2353 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2354                                  __always_unused __be16 proto, u16 vid)
2355 #endif
2356 {
2357         struct i40e_netdev_priv *np = netdev_priv(netdev);
2358         struct i40e_vsi *vsi = np->vsi;
2359
2360         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2361
2362         /* return code is ignored as there is nothing a user
2363          * can do about failure to remove and a log message was
2364          * already printed from the other function
2365          */
2366         i40e_vsi_kill_vlan(vsi, vid);
2367
2368         clear_bit(vid, vsi->active_vlans);
2369
2370         return 0;
2371 }
2372
2373 /**
2374  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2375  * @vsi: the vsi being brought back up
2376  **/
2377 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2378 {
2379         u16 vid;
2380
2381         if (!vsi->netdev)
2382                 return;
2383
2384         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2385
2386         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2387                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2388                                      vid);
2389 }
2390
2391 /**
2392  * i40e_vsi_add_pvid - Add pvid for the VSI
2393  * @vsi: the vsi being adjusted
2394  * @vid: the vlan id to set as a PVID
2395  **/
2396 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2397 {
2398         struct i40e_vsi_context ctxt;
2399         i40e_status ret;
2400
2401         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2402         vsi->info.pvid = cpu_to_le16(vid);
2403         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2404                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2405                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2406
2407         ctxt.seid = vsi->seid;
2408         ctxt.info = vsi->info;
2409         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2410         if (ret) {
2411                 dev_info(&vsi->back->pdev->dev,
2412                          "add pvid failed, err %s aq_err %s\n",
2413                          i40e_stat_str(&vsi->back->hw, ret),
2414                          i40e_aq_str(&vsi->back->hw,
2415                                      vsi->back->hw.aq.asq_last_status));
2416                 return -ENOENT;
2417         }
2418
2419         return 0;
2420 }
2421
2422 /**
2423  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2424  * @vsi: the vsi being adjusted
2425  *
2426  * Just use the vlan_rx_register() service to put it back to normal
2427  **/
2428 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2429 {
2430         i40e_vlan_stripping_disable(vsi);
2431
2432         vsi->info.pvid = 0;
2433 }
2434
2435 /**
2436  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2437  * @vsi: ptr to the VSI
2438  *
2439  * If this function returns with an error, then it's possible one or
2440  * more of the rings is populated (while the rest are not).  It is the
2441  * callers duty to clean those orphaned rings.
2442  *
2443  * Return 0 on success, negative on failure
2444  **/
2445 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2446 {
2447         int i, err = 0;
2448
2449         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2450                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2451
2452         return err;
2453 }
2454
2455 /**
2456  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2457  * @vsi: ptr to the VSI
2458  *
2459  * Free VSI's transmit software resources
2460  **/
2461 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2462 {
2463         int i;
2464
2465         if (!vsi->tx_rings)
2466                 return;
2467
2468         for (i = 0; i < vsi->num_queue_pairs; i++)
2469                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2470                         i40e_free_tx_resources(vsi->tx_rings[i]);
2471 }
2472
2473 /**
2474  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2475  * @vsi: ptr to the VSI
2476  *
2477  * If this function returns with an error, then it's possible one or
2478  * more of the rings is populated (while the rest are not).  It is the
2479  * callers duty to clean those orphaned rings.
2480  *
2481  * Return 0 on success, negative on failure
2482  **/
2483 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2484 {
2485         int i, err = 0;
2486
2487         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2488                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2489 #ifdef I40E_FCOE
2490         i40e_fcoe_setup_ddp_resources(vsi);
2491 #endif
2492         return err;
2493 }
2494
2495 /**
2496  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2497  * @vsi: ptr to the VSI
2498  *
2499  * Free all receive software resources
2500  **/
2501 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2502 {
2503         int i;
2504
2505         if (!vsi->rx_rings)
2506                 return;
2507
2508         for (i = 0; i < vsi->num_queue_pairs; i++)
2509                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2510                         i40e_free_rx_resources(vsi->rx_rings[i]);
2511 #ifdef I40E_FCOE
2512         i40e_fcoe_free_ddp_resources(vsi);
2513 #endif
2514 }
2515
2516 /**
2517  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2518  * @ring: The Tx ring to configure
2519  *
2520  * This enables/disables XPS for a given Tx descriptor ring
2521  * based on the TCs enabled for the VSI that ring belongs to.
2522  **/
2523 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2524 {
2525         struct i40e_vsi *vsi = ring->vsi;
2526         cpumask_var_t mask;
2527
2528         if (!ring->q_vector || !ring->netdev)
2529                 return;
2530
2531         /* Single TC mode enable XPS */
2532         if (vsi->tc_config.numtc <= 1) {
2533                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2534                         netif_set_xps_queue(ring->netdev,
2535                                             &ring->q_vector->affinity_mask,
2536                                             ring->queue_index);
2537         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2538                 /* Disable XPS to allow selection based on TC */
2539                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2540                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2541                 free_cpumask_var(mask);
2542         }
2543 }
2544
2545 /**
2546  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2547  * @ring: The Tx ring to configure
2548  *
2549  * Configure the Tx descriptor ring in the HMC context.
2550  **/
2551 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2552 {
2553         struct i40e_vsi *vsi = ring->vsi;
2554         u16 pf_q = vsi->base_queue + ring->queue_index;
2555         struct i40e_hw *hw = &vsi->back->hw;
2556         struct i40e_hmc_obj_txq tx_ctx;
2557         i40e_status err = 0;
2558         u32 qtx_ctl = 0;
2559
2560         /* some ATR related tx ring init */
2561         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2562                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2563                 ring->atr_count = 0;
2564         } else {
2565                 ring->atr_sample_rate = 0;
2566         }
2567
2568         /* configure XPS */
2569         i40e_config_xps_tx_ring(ring);
2570
2571         /* clear the context structure first */
2572         memset(&tx_ctx, 0, sizeof(tx_ctx));
2573
2574         tx_ctx.new_context = 1;
2575         tx_ctx.base = (ring->dma / 128);
2576         tx_ctx.qlen = ring->count;
2577         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2578                                                I40E_FLAG_FD_ATR_ENABLED));
2579 #ifdef I40E_FCOE
2580         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2581 #endif
2582         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2583         /* FDIR VSI tx ring can still use RS bit and writebacks */
2584         if (vsi->type != I40E_VSI_FDIR)
2585                 tx_ctx.head_wb_ena = 1;
2586         tx_ctx.head_wb_addr = ring->dma +
2587                               (ring->count * sizeof(struct i40e_tx_desc));
2588
2589         /* As part of VSI creation/update, FW allocates certain
2590          * Tx arbitration queue sets for each TC enabled for
2591          * the VSI. The FW returns the handles to these queue
2592          * sets as part of the response buffer to Add VSI,
2593          * Update VSI, etc. AQ commands. It is expected that
2594          * these queue set handles be associated with the Tx
2595          * queues by the driver as part of the TX queue context
2596          * initialization. This has to be done regardless of
2597          * DCB as by default everything is mapped to TC0.
2598          */
2599         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2600         tx_ctx.rdylist_act = 0;
2601
2602         /* clear the context in the HMC */
2603         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2604         if (err) {
2605                 dev_info(&vsi->back->pdev->dev,
2606                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2607                          ring->queue_index, pf_q, err);
2608                 return -ENOMEM;
2609         }
2610
2611         /* set the context in the HMC */
2612         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2613         if (err) {
2614                 dev_info(&vsi->back->pdev->dev,
2615                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2616                          ring->queue_index, pf_q, err);
2617                 return -ENOMEM;
2618         }
2619
2620         /* Now associate this queue with this PCI function */
2621         if (vsi->type == I40E_VSI_VMDQ2) {
2622                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2623                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2624                            I40E_QTX_CTL_VFVM_INDX_MASK;
2625         } else {
2626                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2627         }
2628
2629         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2630                     I40E_QTX_CTL_PF_INDX_MASK);
2631         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2632         i40e_flush(hw);
2633
2634         /* cache tail off for easier writes later */
2635         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2636
2637         return 0;
2638 }
2639
2640 /**
2641  * i40e_configure_rx_ring - Configure a receive ring context
2642  * @ring: The Rx ring to configure
2643  *
2644  * Configure the Rx descriptor ring in the HMC context.
2645  **/
2646 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2647 {
2648         struct i40e_vsi *vsi = ring->vsi;
2649         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2650         u16 pf_q = vsi->base_queue + ring->queue_index;
2651         struct i40e_hw *hw = &vsi->back->hw;
2652         struct i40e_hmc_obj_rxq rx_ctx;
2653         i40e_status err = 0;
2654
2655         ring->state = 0;
2656
2657         /* clear the context structure first */
2658         memset(&rx_ctx, 0, sizeof(rx_ctx));
2659
2660         ring->rx_buf_len = vsi->rx_buf_len;
2661         ring->rx_hdr_len = vsi->rx_hdr_len;
2662
2663         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2664         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2665
2666         rx_ctx.base = (ring->dma / 128);
2667         rx_ctx.qlen = ring->count;
2668
2669         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2670                 set_ring_16byte_desc_enabled(ring);
2671                 rx_ctx.dsize = 0;
2672         } else {
2673                 rx_ctx.dsize = 1;
2674         }
2675
2676         rx_ctx.dtype = vsi->dtype;
2677         if (vsi->dtype) {
2678                 set_ring_ps_enabled(ring);
2679                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2680                                   I40E_RX_SPLIT_IP      |
2681                                   I40E_RX_SPLIT_TCP_UDP |
2682                                   I40E_RX_SPLIT_SCTP;
2683         } else {
2684                 rx_ctx.hsplit_0 = 0;
2685         }
2686
2687         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2688                                   (chain_len * ring->rx_buf_len));
2689         if (hw->revision_id == 0)
2690                 rx_ctx.lrxqthresh = 0;
2691         else
2692                 rx_ctx.lrxqthresh = 2;
2693         rx_ctx.crcstrip = 1;
2694         rx_ctx.l2tsel = 1;
2695         /* this controls whether VLAN is stripped from inner headers */
2696         rx_ctx.showiv = 0;
2697 #ifdef I40E_FCOE
2698         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2699 #endif
2700         /* set the prefena field to 1 because the manual says to */
2701         rx_ctx.prefena = 1;
2702
2703         /* clear the context in the HMC */
2704         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2705         if (err) {
2706                 dev_info(&vsi->back->pdev->dev,
2707                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2708                          ring->queue_index, pf_q, err);
2709                 return -ENOMEM;
2710         }
2711
2712         /* set the context in the HMC */
2713         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2714         if (err) {
2715                 dev_info(&vsi->back->pdev->dev,
2716                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2717                          ring->queue_index, pf_q, err);
2718                 return -ENOMEM;
2719         }
2720
2721         /* cache tail for quicker writes, and clear the reg before use */
2722         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2723         writel(0, ring->tail);
2724
2725         if (ring_is_ps_enabled(ring)) {
2726                 i40e_alloc_rx_headers(ring);
2727                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2728         } else {
2729                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2730         }
2731
2732         return 0;
2733 }
2734
2735 /**
2736  * i40e_vsi_configure_tx - Configure the VSI for Tx
2737  * @vsi: VSI structure describing this set of rings and resources
2738  *
2739  * Configure the Tx VSI for operation.
2740  **/
2741 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2742 {
2743         int err = 0;
2744         u16 i;
2745
2746         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2747                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2748
2749         return err;
2750 }
2751
2752 /**
2753  * i40e_vsi_configure_rx - Configure the VSI for Rx
2754  * @vsi: the VSI being configured
2755  *
2756  * Configure the Rx VSI for operation.
2757  **/
2758 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2759 {
2760         int err = 0;
2761         u16 i;
2762
2763         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2764                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2765                                + ETH_FCS_LEN + VLAN_HLEN;
2766         else
2767                 vsi->max_frame = I40E_RXBUFFER_2048;
2768
2769         /* figure out correct receive buffer length */
2770         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2771                                     I40E_FLAG_RX_PS_ENABLED)) {
2772         case I40E_FLAG_RX_1BUF_ENABLED:
2773                 vsi->rx_hdr_len = 0;
2774                 vsi->rx_buf_len = vsi->max_frame;
2775                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2776                 break;
2777         case I40E_FLAG_RX_PS_ENABLED:
2778                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2779                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2780                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2781                 break;
2782         default:
2783                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2784                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2785                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2786                 break;
2787         }
2788
2789 #ifdef I40E_FCOE
2790         /* setup rx buffer for FCoE */
2791         if ((vsi->type == I40E_VSI_FCOE) &&
2792             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2793                 vsi->rx_hdr_len = 0;
2794                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2795                 vsi->max_frame = I40E_RXBUFFER_3072;
2796                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2797         }
2798
2799 #endif /* I40E_FCOE */
2800         /* round up for the chip's needs */
2801         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2802                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2803         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2804                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2805
2806         /* set up individual rings */
2807         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2808                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2809
2810         return err;
2811 }
2812
2813 /**
2814  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2815  * @vsi: ptr to the VSI
2816  **/
2817 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2818 {
2819         struct i40e_ring *tx_ring, *rx_ring;
2820         u16 qoffset, qcount;
2821         int i, n;
2822
2823         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2824                 /* Reset the TC information */
2825                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2826                         rx_ring = vsi->rx_rings[i];
2827                         tx_ring = vsi->tx_rings[i];
2828                         rx_ring->dcb_tc = 0;
2829                         tx_ring->dcb_tc = 0;
2830                 }
2831         }
2832
2833         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2834                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2835                         continue;
2836
2837                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2838                 qcount = vsi->tc_config.tc_info[n].qcount;
2839                 for (i = qoffset; i < (qoffset + qcount); i++) {
2840                         rx_ring = vsi->rx_rings[i];
2841                         tx_ring = vsi->tx_rings[i];
2842                         rx_ring->dcb_tc = n;
2843                         tx_ring->dcb_tc = n;
2844                 }
2845         }
2846 }
2847
2848 /**
2849  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2850  * @vsi: ptr to the VSI
2851  **/
2852 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2853 {
2854         if (vsi->netdev)
2855                 i40e_set_rx_mode(vsi->netdev);
2856 }
2857
2858 /**
2859  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2860  * @vsi: Pointer to the targeted VSI
2861  *
2862  * This function replays the hlist on the hw where all the SB Flow Director
2863  * filters were saved.
2864  **/
2865 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2866 {
2867         struct i40e_fdir_filter *filter;
2868         struct i40e_pf *pf = vsi->back;
2869         struct hlist_node *node;
2870
2871         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2872                 return;
2873
2874         hlist_for_each_entry_safe(filter, node,
2875                                   &pf->fdir_filter_list, fdir_node) {
2876                 i40e_add_del_fdir(vsi, filter, true);
2877         }
2878 }
2879
2880 /**
2881  * i40e_vsi_configure - Set up the VSI for action
2882  * @vsi: the VSI being configured
2883  **/
2884 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2885 {
2886         int err;
2887
2888         i40e_set_vsi_rx_mode(vsi);
2889         i40e_restore_vlan(vsi);
2890         i40e_vsi_config_dcb_rings(vsi);
2891         err = i40e_vsi_configure_tx(vsi);
2892         if (!err)
2893                 err = i40e_vsi_configure_rx(vsi);
2894
2895         return err;
2896 }
2897
2898 /**
2899  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2900  * @vsi: the VSI being configured
2901  **/
2902 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2903 {
2904         struct i40e_pf *pf = vsi->back;
2905         struct i40e_q_vector *q_vector;
2906         struct i40e_hw *hw = &pf->hw;
2907         u16 vector;
2908         int i, q;
2909         u32 val;
2910         u32 qp;
2911
2912         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2913          * and PFINT_LNKLSTn registers, e.g.:
2914          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2915          */
2916         qp = vsi->base_queue;
2917         vector = vsi->base_vector;
2918         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2919                 q_vector = vsi->q_vectors[i];
2920                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2921                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2922                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2923                      q_vector->rx.itr);
2924                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2925                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2926                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2927                      q_vector->tx.itr);
2928
2929                 /* Linked list for the queuepairs assigned to this vector */
2930                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2931                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2932                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2933                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2934                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2935                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2936                               (I40E_QUEUE_TYPE_TX
2937                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2938
2939                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2940
2941                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2942                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2943                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2944                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2945                               (I40E_QUEUE_TYPE_RX
2946                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2947
2948                         /* Terminate the linked list */
2949                         if (q == (q_vector->num_ringpairs - 1))
2950                                 val |= (I40E_QUEUE_END_OF_LIST
2951                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2952
2953                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2954                         qp++;
2955                 }
2956         }
2957
2958         i40e_flush(hw);
2959 }
2960
2961 /**
2962  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2963  * @hw: ptr to the hardware info
2964  **/
2965 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2966 {
2967         struct i40e_hw *hw = &pf->hw;
2968         u32 val;
2969
2970         /* clear things first */
2971         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2972         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2973
2974         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2975               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2976               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2977               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2978               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2979               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2980               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2981               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2982
2983         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2984                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2985
2986         if (pf->flags & I40E_FLAG_PTP)
2987                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2988
2989         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2990
2991         /* SW_ITR_IDX = 0, but don't change INTENA */
2992         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2993                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2994
2995         /* OTHER_ITR_IDX = 0 */
2996         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2997 }
2998
2999 /**
3000  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3001  * @vsi: the VSI being configured
3002  **/
3003 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3004 {
3005         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3006         struct i40e_pf *pf = vsi->back;
3007         struct i40e_hw *hw = &pf->hw;
3008         u32 val;
3009
3010         /* set the ITR configuration */
3011         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3012         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3013         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3014         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3015         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3016         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3017
3018         i40e_enable_misc_int_causes(pf);
3019
3020         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3021         wr32(hw, I40E_PFINT_LNKLST0, 0);
3022
3023         /* Associate the queue pair to the vector and enable the queue int */
3024         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3025               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3026               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3027
3028         wr32(hw, I40E_QINT_RQCTL(0), val);
3029
3030         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3031               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3032               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3033
3034         wr32(hw, I40E_QINT_TQCTL(0), val);
3035         i40e_flush(hw);
3036 }
3037
3038 /**
3039  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3040  * @pf: board private structure
3041  **/
3042 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3043 {
3044         struct i40e_hw *hw = &pf->hw;
3045
3046         wr32(hw, I40E_PFINT_DYN_CTL0,
3047              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3048         i40e_flush(hw);
3049 }
3050
3051 /**
3052  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3053  * @pf: board private structure
3054  **/
3055 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3056 {
3057         struct i40e_hw *hw = &pf->hw;
3058         u32 val;
3059
3060         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3061               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3062               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3063
3064         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3065         i40e_flush(hw);
3066 }
3067
3068 /**
3069  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3070  * @vsi: pointer to a vsi
3071  * @vector: enable a particular Hw Interrupt vector, without base_vector
3072  **/
3073 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3074 {
3075         struct i40e_pf *pf = vsi->back;
3076         struct i40e_hw *hw = &pf->hw;
3077         u32 val;
3078
3079         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3080               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3081               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3082         wr32(hw, I40E_PFINT_DYN_CTLN(vector + vsi->base_vector - 1), val);
3083         /* skip the flush */
3084 }
3085
3086 /**
3087  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3088  * @vsi: pointer to a vsi
3089  * @vector: disable a particular Hw Interrupt vector
3090  **/
3091 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3092 {
3093         struct i40e_pf *pf = vsi->back;
3094         struct i40e_hw *hw = &pf->hw;
3095         u32 val;
3096
3097         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3098         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3099         i40e_flush(hw);
3100 }
3101
3102 /**
3103  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3104  * @irq: interrupt number
3105  * @data: pointer to a q_vector
3106  **/
3107 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3108 {
3109         struct i40e_q_vector *q_vector = data;
3110
3111         if (!q_vector->tx.ring && !q_vector->rx.ring)
3112                 return IRQ_HANDLED;
3113
3114         napi_schedule(&q_vector->napi);
3115
3116         return IRQ_HANDLED;
3117 }
3118
3119 /**
3120  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3121  * @vsi: the VSI being configured
3122  * @basename: name for the vector
3123  *
3124  * Allocates MSI-X vectors and requests interrupts from the kernel.
3125  **/
3126 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3127 {
3128         int q_vectors = vsi->num_q_vectors;
3129         struct i40e_pf *pf = vsi->back;
3130         int base = vsi->base_vector;
3131         int rx_int_idx = 0;
3132         int tx_int_idx = 0;
3133         int vector, err;
3134
3135         for (vector = 0; vector < q_vectors; vector++) {
3136                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3137
3138                 if (q_vector->tx.ring && q_vector->rx.ring) {
3139                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3140                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3141                         tx_int_idx++;
3142                 } else if (q_vector->rx.ring) {
3143                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3144                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3145                 } else if (q_vector->tx.ring) {
3146                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3147                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3148                 } else {
3149                         /* skip this unused q_vector */
3150                         continue;
3151                 }
3152                 err = request_irq(pf->msix_entries[base + vector].vector,
3153                                   vsi->irq_handler,
3154                                   0,
3155                                   q_vector->name,
3156                                   q_vector);
3157                 if (err) {
3158                         dev_info(&pf->pdev->dev,
3159                                  "MSIX request_irq failed, error: %d\n", err);
3160                         goto free_queue_irqs;
3161                 }
3162                 /* assign the mask for this irq */
3163                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3164                                       &q_vector->affinity_mask);
3165         }
3166
3167         vsi->irqs_ready = true;
3168         return 0;
3169
3170 free_queue_irqs:
3171         while (vector) {
3172                 vector--;
3173                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3174                                       NULL);
3175                 free_irq(pf->msix_entries[base + vector].vector,
3176                          &(vsi->q_vectors[vector]));
3177         }
3178         return err;
3179 }
3180
3181 /**
3182  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3183  * @vsi: the VSI being un-configured
3184  **/
3185 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3186 {
3187         struct i40e_pf *pf = vsi->back;
3188         struct i40e_hw *hw = &pf->hw;
3189         int base = vsi->base_vector;
3190         int i;
3191
3192         for (i = 0; i < vsi->num_queue_pairs; i++) {
3193                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3194                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3195         }
3196
3197         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3198                 for (i = vsi->base_vector;
3199                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3200                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3201
3202                 i40e_flush(hw);
3203                 for (i = 0; i < vsi->num_q_vectors; i++)
3204                         synchronize_irq(pf->msix_entries[i + base].vector);
3205         } else {
3206                 /* Legacy and MSI mode - this stops all interrupt handling */
3207                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3208                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3209                 i40e_flush(hw);
3210                 synchronize_irq(pf->pdev->irq);
3211         }
3212 }
3213
3214 /**
3215  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3216  * @vsi: the VSI being configured
3217  **/
3218 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3219 {
3220         struct i40e_pf *pf = vsi->back;
3221         int i;
3222
3223         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3224                 for (i = 0; i < vsi->num_q_vectors; i++)
3225                         i40e_irq_dynamic_enable(vsi, i);
3226         } else {
3227                 i40e_irq_dynamic_enable_icr0(pf);
3228         }
3229
3230         i40e_flush(&pf->hw);
3231         return 0;
3232 }
3233
3234 /**
3235  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3236  * @pf: board private structure
3237  **/
3238 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3239 {
3240         /* Disable ICR 0 */
3241         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3242         i40e_flush(&pf->hw);
3243 }
3244
3245 /**
3246  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3247  * @irq: interrupt number
3248  * @data: pointer to a q_vector
3249  *
3250  * This is the handler used for all MSI/Legacy interrupts, and deals
3251  * with both queue and non-queue interrupts.  This is also used in
3252  * MSIX mode to handle the non-queue interrupts.
3253  **/
3254 static irqreturn_t i40e_intr(int irq, void *data)
3255 {
3256         struct i40e_pf *pf = (struct i40e_pf *)data;
3257         struct i40e_hw *hw = &pf->hw;
3258         irqreturn_t ret = IRQ_NONE;
3259         u32 icr0, icr0_remaining;
3260         u32 val, ena_mask;
3261
3262         icr0 = rd32(hw, I40E_PFINT_ICR0);
3263         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3264
3265         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3266         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3267                 goto enable_intr;
3268
3269         /* if interrupt but no bits showing, must be SWINT */
3270         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3271             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3272                 pf->sw_int_count++;
3273
3274         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3275             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3276                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3277                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3278                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3279         }
3280
3281         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3282         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3283
3284                 /* temporarily disable queue cause for NAPI processing */
3285                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3286                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3287                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3288
3289                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3290                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3291                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3292
3293                 if (!test_bit(__I40E_DOWN, &pf->state))
3294                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3295         }
3296
3297         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3298                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3299                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3300         }
3301
3302         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3303                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3304                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3305         }
3306
3307         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3308                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3309                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3310         }
3311
3312         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3313                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3314                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3315                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3316                 val = rd32(hw, I40E_GLGEN_RSTAT);
3317                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3318                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3319                 if (val == I40E_RESET_CORER) {
3320                         pf->corer_count++;
3321                 } else if (val == I40E_RESET_GLOBR) {
3322                         pf->globr_count++;
3323                 } else if (val == I40E_RESET_EMPR) {
3324                         pf->empr_count++;
3325                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3326                 }
3327         }
3328
3329         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3330                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3331                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3332                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3333                          rd32(hw, I40E_PFHMC_ERRORINFO),
3334                          rd32(hw, I40E_PFHMC_ERRORDATA));
3335         }
3336
3337         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3338                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3339
3340                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3341                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3342                         i40e_ptp_tx_hwtstamp(pf);
3343                 }
3344         }
3345
3346         /* If a critical error is pending we have no choice but to reset the
3347          * device.
3348          * Report and mask out any remaining unexpected interrupts.
3349          */
3350         icr0_remaining = icr0 & ena_mask;
3351         if (icr0_remaining) {
3352                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3353                          icr0_remaining);
3354                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3355                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3356                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3357                         dev_info(&pf->pdev->dev, "device will be reset\n");
3358                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3359                         i40e_service_event_schedule(pf);
3360                 }
3361                 ena_mask &= ~icr0_remaining;
3362         }
3363         ret = IRQ_HANDLED;
3364
3365 enable_intr:
3366         /* re-enable interrupt causes */
3367         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3368         if (!test_bit(__I40E_DOWN, &pf->state)) {
3369                 i40e_service_event_schedule(pf);
3370                 i40e_irq_dynamic_enable_icr0(pf);
3371         }
3372
3373         return ret;
3374 }
3375
3376 /**
3377  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3378  * @tx_ring:  tx ring to clean
3379  * @budget:   how many cleans we're allowed
3380  *
3381  * Returns true if there's any budget left (e.g. the clean is finished)
3382  **/
3383 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3384 {
3385         struct i40e_vsi *vsi = tx_ring->vsi;
3386         u16 i = tx_ring->next_to_clean;
3387         struct i40e_tx_buffer *tx_buf;
3388         struct i40e_tx_desc *tx_desc;
3389
3390         tx_buf = &tx_ring->tx_bi[i];
3391         tx_desc = I40E_TX_DESC(tx_ring, i);
3392         i -= tx_ring->count;
3393
3394         do {
3395                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3396
3397                 /* if next_to_watch is not set then there is no work pending */
3398                 if (!eop_desc)
3399                         break;
3400
3401                 /* prevent any other reads prior to eop_desc */
3402                 read_barrier_depends();
3403
3404                 /* if the descriptor isn't done, no work yet to do */
3405                 if (!(eop_desc->cmd_type_offset_bsz &
3406                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3407                         break;
3408
3409                 /* clear next_to_watch to prevent false hangs */
3410                 tx_buf->next_to_watch = NULL;
3411
3412                 tx_desc->buffer_addr = 0;
3413                 tx_desc->cmd_type_offset_bsz = 0;
3414                 /* move past filter desc */
3415                 tx_buf++;
3416                 tx_desc++;
3417                 i++;
3418                 if (unlikely(!i)) {
3419                         i -= tx_ring->count;
3420                         tx_buf = tx_ring->tx_bi;
3421                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3422                 }
3423                 /* unmap skb header data */
3424                 dma_unmap_single(tx_ring->dev,
3425                                  dma_unmap_addr(tx_buf, dma),
3426                                  dma_unmap_len(tx_buf, len),
3427                                  DMA_TO_DEVICE);
3428                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3429                         kfree(tx_buf->raw_buf);
3430
3431                 tx_buf->raw_buf = NULL;
3432                 tx_buf->tx_flags = 0;
3433                 tx_buf->next_to_watch = NULL;
3434                 dma_unmap_len_set(tx_buf, len, 0);
3435                 tx_desc->buffer_addr = 0;
3436                 tx_desc->cmd_type_offset_bsz = 0;
3437
3438                 /* move us past the eop_desc for start of next FD desc */
3439                 tx_buf++;
3440                 tx_desc++;
3441                 i++;
3442                 if (unlikely(!i)) {
3443                         i -= tx_ring->count;
3444                         tx_buf = tx_ring->tx_bi;
3445                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3446                 }
3447
3448                 /* update budget accounting */
3449                 budget--;
3450         } while (likely(budget));
3451
3452         i += tx_ring->count;
3453         tx_ring->next_to_clean = i;
3454
3455         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3456                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3457         }
3458         return budget > 0;
3459 }
3460
3461 /**
3462  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3463  * @irq: interrupt number
3464  * @data: pointer to a q_vector
3465  **/
3466 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3467 {
3468         struct i40e_q_vector *q_vector = data;
3469         struct i40e_vsi *vsi;
3470
3471         if (!q_vector->tx.ring)
3472                 return IRQ_HANDLED;
3473
3474         vsi = q_vector->tx.ring->vsi;
3475         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3476
3477         return IRQ_HANDLED;
3478 }
3479
3480 /**
3481  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3482  * @vsi: the VSI being configured
3483  * @v_idx: vector index
3484  * @qp_idx: queue pair index
3485  **/
3486 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3487 {
3488         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3489         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3490         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3491
3492         tx_ring->q_vector = q_vector;
3493         tx_ring->next = q_vector->tx.ring;
3494         q_vector->tx.ring = tx_ring;
3495         q_vector->tx.count++;
3496
3497         rx_ring->q_vector = q_vector;
3498         rx_ring->next = q_vector->rx.ring;
3499         q_vector->rx.ring = rx_ring;
3500         q_vector->rx.count++;
3501 }
3502
3503 /**
3504  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3505  * @vsi: the VSI being configured
3506  *
3507  * This function maps descriptor rings to the queue-specific vectors
3508  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3509  * one vector per queue pair, but on a constrained vector budget, we
3510  * group the queue pairs as "efficiently" as possible.
3511  **/
3512 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3513 {
3514         int qp_remaining = vsi->num_queue_pairs;
3515         int q_vectors = vsi->num_q_vectors;
3516         int num_ringpairs;
3517         int v_start = 0;
3518         int qp_idx = 0;
3519
3520         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3521          * group them so there are multiple queues per vector.
3522          * It is also important to go through all the vectors available to be
3523          * sure that if we don't use all the vectors, that the remaining vectors
3524          * are cleared. This is especially important when decreasing the
3525          * number of queues in use.
3526          */
3527         for (; v_start < q_vectors; v_start++) {
3528                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3529
3530                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3531
3532                 q_vector->num_ringpairs = num_ringpairs;
3533
3534                 q_vector->rx.count = 0;
3535                 q_vector->tx.count = 0;
3536                 q_vector->rx.ring = NULL;
3537                 q_vector->tx.ring = NULL;
3538
3539                 while (num_ringpairs--) {
3540                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3541                         qp_idx++;
3542                         qp_remaining--;
3543                 }
3544         }
3545 }
3546
3547 /**
3548  * i40e_vsi_request_irq - Request IRQ from the OS
3549  * @vsi: the VSI being configured
3550  * @basename: name for the vector
3551  **/
3552 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3553 {
3554         struct i40e_pf *pf = vsi->back;
3555         int err;
3556
3557         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3558                 err = i40e_vsi_request_irq_msix(vsi, basename);
3559         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3560                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3561                                   pf->int_name, pf);
3562         else
3563                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3564                                   pf->int_name, pf);
3565
3566         if (err)
3567                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3568
3569         return err;
3570 }
3571
3572 #ifdef CONFIG_NET_POLL_CONTROLLER
3573 /**
3574  * i40e_netpoll - A Polling 'interrupt'handler
3575  * @netdev: network interface device structure
3576  *
3577  * This is used by netconsole to send skbs without having to re-enable
3578  * interrupts.  It's not called while the normal interrupt routine is executing.
3579  **/
3580 #ifdef I40E_FCOE
3581 void i40e_netpoll(struct net_device *netdev)
3582 #else
3583 static void i40e_netpoll(struct net_device *netdev)
3584 #endif
3585 {
3586         struct i40e_netdev_priv *np = netdev_priv(netdev);
3587         struct i40e_vsi *vsi = np->vsi;
3588         struct i40e_pf *pf = vsi->back;
3589         int i;
3590
3591         /* if interface is down do nothing */
3592         if (test_bit(__I40E_DOWN, &vsi->state))
3593                 return;
3594
3595         pf->flags |= I40E_FLAG_IN_NETPOLL;
3596         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3597                 for (i = 0; i < vsi->num_q_vectors; i++)
3598                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3599         } else {
3600                 i40e_intr(pf->pdev->irq, netdev);
3601         }
3602         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3603 }
3604 #endif
3605
3606 /**
3607  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3608  * @pf: the PF being configured
3609  * @pf_q: the PF queue
3610  * @enable: enable or disable state of the queue
3611  *
3612  * This routine will wait for the given Tx queue of the PF to reach the
3613  * enabled or disabled state.
3614  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3615  * multiple retries; else will return 0 in case of success.
3616  **/
3617 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3618 {
3619         int i;
3620         u32 tx_reg;
3621
3622         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3623                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3624                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3625                         break;
3626
3627                 usleep_range(10, 20);
3628         }
3629         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3630                 return -ETIMEDOUT;
3631
3632         return 0;
3633 }
3634
3635 /**
3636  * i40e_vsi_control_tx - Start or stop a VSI's rings
3637  * @vsi: the VSI being configured
3638  * @enable: start or stop the rings
3639  **/
3640 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3641 {
3642         struct i40e_pf *pf = vsi->back;
3643         struct i40e_hw *hw = &pf->hw;
3644         int i, j, pf_q, ret = 0;
3645         u32 tx_reg;
3646
3647         pf_q = vsi->base_queue;
3648         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3649
3650                 /* warn the TX unit of coming changes */
3651                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3652                 if (!enable)
3653                         usleep_range(10, 20);
3654
3655                 for (j = 0; j < 50; j++) {
3656                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3657                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3658                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3659                                 break;
3660                         usleep_range(1000, 2000);
3661                 }
3662                 /* Skip if the queue is already in the requested state */
3663                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3664                         continue;
3665
3666                 /* turn on/off the queue */
3667                 if (enable) {
3668                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3669                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3670                 } else {
3671                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3672                 }
3673
3674                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3675                 /* No waiting for the Tx queue to disable */
3676                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3677                         continue;
3678
3679                 /* wait for the change to finish */
3680                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3681                 if (ret) {
3682                         dev_info(&pf->pdev->dev,
3683                                  "VSI seid %d Tx ring %d %sable timeout\n",
3684                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3685                         break;
3686                 }
3687         }
3688
3689         if (hw->revision_id == 0)
3690                 mdelay(50);
3691         return ret;
3692 }
3693
3694 /**
3695  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3696  * @pf: the PF being configured
3697  * @pf_q: the PF queue
3698  * @enable: enable or disable state of the queue
3699  *
3700  * This routine will wait for the given Rx queue of the PF to reach the
3701  * enabled or disabled state.
3702  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3703  * multiple retries; else will return 0 in case of success.
3704  **/
3705 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3706 {
3707         int i;
3708         u32 rx_reg;
3709
3710         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3711                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3712                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3713                         break;
3714
3715                 usleep_range(10, 20);
3716         }
3717         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3718                 return -ETIMEDOUT;
3719
3720         return 0;
3721 }
3722
3723 /**
3724  * i40e_vsi_control_rx - Start or stop a VSI's rings
3725  * @vsi: the VSI being configured
3726  * @enable: start or stop the rings
3727  **/
3728 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3729 {
3730         struct i40e_pf *pf = vsi->back;
3731         struct i40e_hw *hw = &pf->hw;
3732         int i, j, pf_q, ret = 0;
3733         u32 rx_reg;
3734
3735         pf_q = vsi->base_queue;
3736         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3737                 for (j = 0; j < 50; j++) {
3738                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3739                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3740                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3741                                 break;
3742                         usleep_range(1000, 2000);
3743                 }
3744
3745                 /* Skip if the queue is already in the requested state */
3746                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3747                         continue;
3748
3749                 /* turn on/off the queue */
3750                 if (enable)
3751                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3752                 else
3753                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3754                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3755
3756                 /* wait for the change to finish */
3757                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3758                 if (ret) {
3759                         dev_info(&pf->pdev->dev,
3760                                  "VSI seid %d Rx ring %d %sable timeout\n",
3761                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3762                         break;
3763                 }
3764         }
3765
3766         return ret;
3767 }
3768
3769 /**
3770  * i40e_vsi_control_rings - Start or stop a VSI's rings
3771  * @vsi: the VSI being configured
3772  * @enable: start or stop the rings
3773  **/
3774 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3775 {
3776         int ret = 0;
3777
3778         /* do rx first for enable and last for disable */
3779         if (request) {
3780                 ret = i40e_vsi_control_rx(vsi, request);
3781                 if (ret)
3782                         return ret;
3783                 ret = i40e_vsi_control_tx(vsi, request);
3784         } else {
3785                 /* Ignore return value, we need to shutdown whatever we can */
3786                 i40e_vsi_control_tx(vsi, request);
3787                 i40e_vsi_control_rx(vsi, request);
3788         }
3789
3790         return ret;
3791 }
3792
3793 /**
3794  * i40e_vsi_free_irq - Free the irq association with the OS
3795  * @vsi: the VSI being configured
3796  **/
3797 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3798 {
3799         struct i40e_pf *pf = vsi->back;
3800         struct i40e_hw *hw = &pf->hw;
3801         int base = vsi->base_vector;
3802         u32 val, qp;
3803         int i;
3804
3805         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3806                 if (!vsi->q_vectors)
3807                         return;
3808
3809                 if (!vsi->irqs_ready)
3810                         return;
3811
3812                 vsi->irqs_ready = false;
3813                 for (i = 0; i < vsi->num_q_vectors; i++) {
3814                         u16 vector = i + base;
3815
3816                         /* free only the irqs that were actually requested */
3817                         if (!vsi->q_vectors[i] ||
3818                             !vsi->q_vectors[i]->num_ringpairs)
3819                                 continue;
3820
3821                         /* clear the affinity_mask in the IRQ descriptor */
3822                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3823                                               NULL);
3824                         free_irq(pf->msix_entries[vector].vector,
3825                                  vsi->q_vectors[i]);
3826
3827                         /* Tear down the interrupt queue link list
3828                          *
3829                          * We know that they come in pairs and always
3830                          * the Rx first, then the Tx.  To clear the
3831                          * link list, stick the EOL value into the
3832                          * next_q field of the registers.
3833                          */
3834                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3835                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3836                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3837                         val |= I40E_QUEUE_END_OF_LIST
3838                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3839                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3840
3841                         while (qp != I40E_QUEUE_END_OF_LIST) {
3842                                 u32 next;
3843
3844                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3845
3846                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3847                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3848                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3849                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3850
3851                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3852                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3853
3854                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3855
3856                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3857
3858                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3859                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3860
3861                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3862                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3863                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3864                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3865
3866                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3867                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3868
3869                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3870                                 qp = next;
3871                         }
3872                 }
3873         } else {
3874                 free_irq(pf->pdev->irq, pf);
3875
3876                 val = rd32(hw, I40E_PFINT_LNKLST0);
3877                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3878                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3879                 val |= I40E_QUEUE_END_OF_LIST
3880                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3881                 wr32(hw, I40E_PFINT_LNKLST0, val);
3882
3883                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3884                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3885                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3886                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3887                          I40E_QINT_RQCTL_INTEVENT_MASK);
3888
3889                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3890                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3891
3892                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3893
3894                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3895
3896                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3897                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3898                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3899                          I40E_QINT_TQCTL_INTEVENT_MASK);
3900
3901                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3902                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3903
3904                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3905         }
3906 }
3907
3908 /**
3909  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3910  * @vsi: the VSI being configured
3911  * @v_idx: Index of vector to be freed
3912  *
3913  * This function frees the memory allocated to the q_vector.  In addition if
3914  * NAPI is enabled it will delete any references to the NAPI struct prior
3915  * to freeing the q_vector.
3916  **/
3917 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3918 {
3919         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3920         struct i40e_ring *ring;
3921
3922         if (!q_vector)
3923                 return;
3924
3925         /* disassociate q_vector from rings */
3926         i40e_for_each_ring(ring, q_vector->tx)
3927                 ring->q_vector = NULL;
3928
3929         i40e_for_each_ring(ring, q_vector->rx)
3930                 ring->q_vector = NULL;
3931
3932         /* only VSI w/ an associated netdev is set up w/ NAPI */
3933         if (vsi->netdev)
3934                 netif_napi_del(&q_vector->napi);
3935
3936         vsi->q_vectors[v_idx] = NULL;
3937
3938         kfree_rcu(q_vector, rcu);
3939 }
3940
3941 /**
3942  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3943  * @vsi: the VSI being un-configured
3944  *
3945  * This frees the memory allocated to the q_vectors and
3946  * deletes references to the NAPI struct.
3947  **/
3948 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3949 {
3950         int v_idx;
3951
3952         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3953                 i40e_free_q_vector(vsi, v_idx);
3954 }
3955
3956 /**
3957  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3958  * @pf: board private structure
3959  **/
3960 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3961 {
3962         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3963         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3964                 pci_disable_msix(pf->pdev);
3965                 kfree(pf->msix_entries);
3966                 pf->msix_entries = NULL;
3967                 kfree(pf->irq_pile);
3968                 pf->irq_pile = NULL;
3969         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3970                 pci_disable_msi(pf->pdev);
3971         }
3972         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3973 }
3974
3975 /**
3976  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3977  * @pf: board private structure
3978  *
3979  * We go through and clear interrupt specific resources and reset the structure
3980  * to pre-load conditions
3981  **/
3982 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3983 {
3984         int i;
3985
3986         i40e_stop_misc_vector(pf);
3987         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3988                 synchronize_irq(pf->msix_entries[0].vector);
3989                 free_irq(pf->msix_entries[0].vector, pf);
3990         }
3991
3992         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3993         for (i = 0; i < pf->num_alloc_vsi; i++)
3994                 if (pf->vsi[i])
3995                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3996         i40e_reset_interrupt_capability(pf);
3997 }
3998
3999 /**
4000  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4001  * @vsi: the VSI being configured
4002  **/
4003 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4004 {
4005         int q_idx;
4006
4007         if (!vsi->netdev)
4008                 return;
4009
4010         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4011                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4012 }
4013
4014 /**
4015  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4016  * @vsi: the VSI being configured
4017  **/
4018 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4019 {
4020         int q_idx;
4021
4022         if (!vsi->netdev)
4023                 return;
4024
4025         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4026                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4027 }
4028
4029 /**
4030  * i40e_vsi_close - Shut down a VSI
4031  * @vsi: the vsi to be quelled
4032  **/
4033 static void i40e_vsi_close(struct i40e_vsi *vsi)
4034 {
4035         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4036                 i40e_down(vsi);
4037         i40e_vsi_free_irq(vsi);
4038         i40e_vsi_free_tx_resources(vsi);
4039         i40e_vsi_free_rx_resources(vsi);
4040         vsi->current_netdev_flags = 0;
4041 }
4042
4043 /**
4044  * i40e_quiesce_vsi - Pause a given VSI
4045  * @vsi: the VSI being paused
4046  **/
4047 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4048 {
4049         if (test_bit(__I40E_DOWN, &vsi->state))
4050                 return;
4051
4052         /* No need to disable FCoE VSI when Tx suspended */
4053         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4054             vsi->type == I40E_VSI_FCOE) {
4055                 dev_dbg(&vsi->back->pdev->dev,
4056                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4057                 return;
4058         }
4059
4060         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4061         if (vsi->netdev && netif_running(vsi->netdev)) {
4062                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4063         } else {
4064                 i40e_vsi_close(vsi);
4065         }
4066 }
4067
4068 /**
4069  * i40e_unquiesce_vsi - Resume a given VSI
4070  * @vsi: the VSI being resumed
4071  **/
4072 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4073 {
4074         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4075                 return;
4076
4077         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4078         if (vsi->netdev && netif_running(vsi->netdev))
4079                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4080         else
4081                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4082 }
4083
4084 /**
4085  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4086  * @pf: the PF
4087  **/
4088 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4089 {
4090         int v;
4091
4092         for (v = 0; v < pf->num_alloc_vsi; v++) {
4093                 if (pf->vsi[v])
4094                         i40e_quiesce_vsi(pf->vsi[v]);
4095         }
4096 }
4097
4098 /**
4099  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4100  * @pf: the PF
4101  **/
4102 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4103 {
4104         int v;
4105
4106         for (v = 0; v < pf->num_alloc_vsi; v++) {
4107                 if (pf->vsi[v])
4108                         i40e_unquiesce_vsi(pf->vsi[v]);
4109         }
4110 }
4111
4112 #ifdef CONFIG_I40E_DCB
4113 /**
4114  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4115  * @vsi: the VSI being configured
4116  *
4117  * This function waits for the given VSI's Tx queues to be disabled.
4118  **/
4119 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4120 {
4121         struct i40e_pf *pf = vsi->back;
4122         int i, pf_q, ret;
4123
4124         pf_q = vsi->base_queue;
4125         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4126                 /* Check and wait for the disable status of the queue */
4127                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4128                 if (ret) {
4129                         dev_info(&pf->pdev->dev,
4130                                  "VSI seid %d Tx ring %d disable timeout\n",
4131                                  vsi->seid, pf_q);
4132                         return ret;
4133                 }
4134         }
4135
4136         return 0;
4137 }
4138
4139 /**
4140  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4141  * @pf: the PF
4142  *
4143  * This function waits for the Tx queues to be in disabled state for all the
4144  * VSIs that are managed by this PF.
4145  **/
4146 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4147 {
4148         int v, ret = 0;
4149
4150         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4151                 /* No need to wait for FCoE VSI queues */
4152                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4153                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4154                         if (ret)
4155                                 break;
4156                 }
4157         }
4158
4159         return ret;
4160 }
4161
4162 #endif
4163
4164 /**
4165  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4166  * @q_idx: TX queue number
4167  * @vsi: Pointer to VSI struct
4168  *
4169  * This function checks specified queue for given VSI. Detects hung condition.
4170  * Sets hung bit since it is two step process. Before next run of service task
4171  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4172  * hung condition remain unchanged and during subsequent run, this function
4173  * issues SW interrupt to recover from hung condition.
4174  **/
4175 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4176 {
4177         struct i40e_ring *tx_ring = NULL;
4178         struct i40e_pf  *pf;
4179         u32 head, val, tx_pending;
4180         int i;
4181
4182         pf = vsi->back;
4183
4184         /* now that we have an index, find the tx_ring struct */
4185         for (i = 0; i < vsi->num_queue_pairs; i++) {
4186                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4187                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4188                                 tx_ring = vsi->tx_rings[i];
4189                                 break;
4190                         }
4191                 }
4192         }
4193
4194         if (!tx_ring)
4195                 return;
4196
4197         /* Read interrupt register */
4198         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4199                 val = rd32(&pf->hw,
4200                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4201                                                tx_ring->vsi->base_vector - 1));
4202         else
4203                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4204
4205         head = i40e_get_head(tx_ring);
4206
4207         tx_pending = i40e_get_tx_pending(tx_ring);
4208
4209         /* Interrupts are disabled and TX pending is non-zero,
4210          * trigger the SW interrupt (don't wait). Worst case
4211          * there will be one extra interrupt which may result
4212          * into not cleaning any queues because queues are cleaned.
4213          */
4214         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4215                 i40e_force_wb(vsi, tx_ring->q_vector);
4216 }
4217
4218 /**
4219  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4220  * @pf:  pointer to PF struct
4221  *
4222  * LAN VSI has netdev and netdev has TX queues. This function is to check
4223  * each of those TX queues if they are hung, trigger recovery by issuing
4224  * SW interrupt.
4225  **/
4226 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4227 {
4228         struct net_device *netdev;
4229         struct i40e_vsi *vsi;
4230         int i;
4231
4232         /* Only for LAN VSI */
4233         vsi = pf->vsi[pf->lan_vsi];
4234
4235         if (!vsi)
4236                 return;
4237
4238         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4239         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4240             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4241                 return;
4242
4243         /* Make sure type is MAIN VSI */
4244         if (vsi->type != I40E_VSI_MAIN)
4245                 return;
4246
4247         netdev = vsi->netdev;
4248         if (!netdev)
4249                 return;
4250
4251         /* Bail out if netif_carrier is not OK */
4252         if (!netif_carrier_ok(netdev))
4253                 return;
4254
4255         /* Go thru' TX queues for netdev */
4256         for (i = 0; i < netdev->num_tx_queues; i++) {
4257                 struct netdev_queue *q;
4258
4259                 q = netdev_get_tx_queue(netdev, i);
4260                 if (q)
4261                         i40e_detect_recover_hung_queue(i, vsi);
4262         }
4263 }
4264
4265 /**
4266  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4267  * @pf: pointer to PF
4268  *
4269  * Get TC map for ISCSI PF type that will include iSCSI TC
4270  * and LAN TC.
4271  **/
4272 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4273 {
4274         struct i40e_dcb_app_priority_table app;
4275         struct i40e_hw *hw = &pf->hw;
4276         u8 enabled_tc = 1; /* TC0 is always enabled */
4277         u8 tc, i;
4278         /* Get the iSCSI APP TLV */
4279         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4280
4281         for (i = 0; i < dcbcfg->numapps; i++) {
4282                 app = dcbcfg->app[i];
4283                 if (app.selector == I40E_APP_SEL_TCPIP &&
4284                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4285                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4286                         enabled_tc |= BIT_ULL(tc);
4287                         break;
4288                 }
4289         }
4290
4291         return enabled_tc;
4292 }
4293
4294 /**
4295  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4296  * @dcbcfg: the corresponding DCBx configuration structure
4297  *
4298  * Return the number of TCs from given DCBx configuration
4299  **/
4300 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4301 {
4302         u8 num_tc = 0;
4303         int i;
4304
4305         /* Scan the ETS Config Priority Table to find
4306          * traffic class enabled for a given priority
4307          * and use the traffic class index to get the
4308          * number of traffic classes enabled
4309          */
4310         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4311                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4312                         num_tc = dcbcfg->etscfg.prioritytable[i];
4313         }
4314
4315         /* Traffic class index starts from zero so
4316          * increment to return the actual count
4317          */
4318         return num_tc + 1;
4319 }
4320
4321 /**
4322  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4323  * @dcbcfg: the corresponding DCBx configuration structure
4324  *
4325  * Query the current DCB configuration and return the number of
4326  * traffic classes enabled from the given DCBX config
4327  **/
4328 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4329 {
4330         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4331         u8 enabled_tc = 1;
4332         u8 i;
4333
4334         for (i = 0; i < num_tc; i++)
4335                 enabled_tc |= BIT(i);
4336
4337         return enabled_tc;
4338 }
4339
4340 /**
4341  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4342  * @pf: PF being queried
4343  *
4344  * Return number of traffic classes enabled for the given PF
4345  **/
4346 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4347 {
4348         struct i40e_hw *hw = &pf->hw;
4349         u8 i, enabled_tc;
4350         u8 num_tc = 0;
4351         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4352
4353         /* If DCB is not enabled then always in single TC */
4354         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4355                 return 1;
4356
4357         /* SFP mode will be enabled for all TCs on port */
4358         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4359                 return i40e_dcb_get_num_tc(dcbcfg);
4360
4361         /* MFP mode return count of enabled TCs for this PF */
4362         if (pf->hw.func_caps.iscsi)
4363                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4364         else
4365                 return 1; /* Only TC0 */
4366
4367         /* At least have TC0 */
4368         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4369         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4370                 if (enabled_tc & BIT_ULL(i))
4371                         num_tc++;
4372         }
4373         return num_tc;
4374 }
4375
4376 /**
4377  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4378  * @pf: PF being queried
4379  *
4380  * Return a bitmap for first enabled traffic class for this PF.
4381  **/
4382 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4383 {
4384         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4385         u8 i = 0;
4386
4387         if (!enabled_tc)
4388                 return 0x1; /* TC0 */
4389
4390         /* Find the first enabled TC */
4391         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4392                 if (enabled_tc & BIT_ULL(i))
4393                         break;
4394         }
4395
4396         return BIT(i);
4397 }
4398
4399 /**
4400  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4401  * @pf: PF being queried
4402  *
4403  * Return a bitmap for enabled traffic classes for this PF.
4404  **/
4405 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4406 {
4407         /* If DCB is not enabled for this PF then just return default TC */
4408         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4409                 return i40e_pf_get_default_tc(pf);
4410
4411         /* SFP mode we want PF to be enabled for all TCs */
4412         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4413                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4414
4415         /* MFP enabled and iSCSI PF type */
4416         if (pf->hw.func_caps.iscsi)
4417                 return i40e_get_iscsi_tc_map(pf);
4418         else
4419                 return i40e_pf_get_default_tc(pf);
4420 }
4421
4422 /**
4423  * i40e_vsi_get_bw_info - Query VSI BW Information
4424  * @vsi: the VSI being queried
4425  *
4426  * Returns 0 on success, negative value on failure
4427  **/
4428 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4429 {
4430         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4431         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4432         struct i40e_pf *pf = vsi->back;
4433         struct i40e_hw *hw = &pf->hw;
4434         i40e_status ret;
4435         u32 tc_bw_max;
4436         int i;
4437
4438         /* Get the VSI level BW configuration */
4439         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4440         if (ret) {
4441                 dev_info(&pf->pdev->dev,
4442                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4443                          i40e_stat_str(&pf->hw, ret),
4444                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4445                 return -EINVAL;
4446         }
4447
4448         /* Get the VSI level BW configuration per TC */
4449         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4450                                                NULL);
4451         if (ret) {
4452                 dev_info(&pf->pdev->dev,
4453                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4454                          i40e_stat_str(&pf->hw, ret),
4455                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4456                 return -EINVAL;
4457         }
4458
4459         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4460                 dev_info(&pf->pdev->dev,
4461                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4462                          bw_config.tc_valid_bits,
4463                          bw_ets_config.tc_valid_bits);
4464                 /* Still continuing */
4465         }
4466
4467         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4468         vsi->bw_max_quanta = bw_config.max_bw;
4469         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4470                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4471         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4472                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4473                 vsi->bw_ets_limit_credits[i] =
4474                                         le16_to_cpu(bw_ets_config.credits[i]);
4475                 /* 3 bits out of 4 for each TC */
4476                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4477         }
4478
4479         return 0;
4480 }
4481
4482 /**
4483  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4484  * @vsi: the VSI being configured
4485  * @enabled_tc: TC bitmap
4486  * @bw_credits: BW shared credits per TC
4487  *
4488  * Returns 0 on success, negative value on failure
4489  **/
4490 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4491                                        u8 *bw_share)
4492 {
4493         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4494         i40e_status ret;
4495         int i;
4496
4497         bw_data.tc_valid_bits = enabled_tc;
4498         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4499                 bw_data.tc_bw_credits[i] = bw_share[i];
4500
4501         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4502                                        NULL);
4503         if (ret) {
4504                 dev_info(&vsi->back->pdev->dev,
4505                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4506                          vsi->back->hw.aq.asq_last_status);
4507                 return -EINVAL;
4508         }
4509
4510         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4511                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4512
4513         return 0;
4514 }
4515
4516 /**
4517  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4518  * @vsi: the VSI being configured
4519  * @enabled_tc: TC map to be enabled
4520  *
4521  **/
4522 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4523 {
4524         struct net_device *netdev = vsi->netdev;
4525         struct i40e_pf *pf = vsi->back;
4526         struct i40e_hw *hw = &pf->hw;
4527         u8 netdev_tc = 0;
4528         int i;
4529         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4530
4531         if (!netdev)
4532                 return;
4533
4534         if (!enabled_tc) {
4535                 netdev_reset_tc(netdev);
4536                 return;
4537         }
4538
4539         /* Set up actual enabled TCs on the VSI */
4540         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4541                 return;
4542
4543         /* set per TC queues for the VSI */
4544         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4545                 /* Only set TC queues for enabled tcs
4546                  *
4547                  * e.g. For a VSI that has TC0 and TC3 enabled the
4548                  * enabled_tc bitmap would be 0x00001001; the driver
4549                  * will set the numtc for netdev as 2 that will be
4550                  * referenced by the netdev layer as TC 0 and 1.
4551                  */
4552                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4553                         netdev_set_tc_queue(netdev,
4554                                         vsi->tc_config.tc_info[i].netdev_tc,
4555                                         vsi->tc_config.tc_info[i].qcount,
4556                                         vsi->tc_config.tc_info[i].qoffset);
4557         }
4558
4559         /* Assign UP2TC map for the VSI */
4560         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4561                 /* Get the actual TC# for the UP */
4562                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4563                 /* Get the mapped netdev TC# for the UP */
4564                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4565                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4566         }
4567 }
4568
4569 /**
4570  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4571  * @vsi: the VSI being configured
4572  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4573  **/
4574 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4575                                       struct i40e_vsi_context *ctxt)
4576 {
4577         /* copy just the sections touched not the entire info
4578          * since not all sections are valid as returned by
4579          * update vsi params
4580          */
4581         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4582         memcpy(&vsi->info.queue_mapping,
4583                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4584         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4585                sizeof(vsi->info.tc_mapping));
4586 }
4587
4588 /**
4589  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4590  * @vsi: VSI to be configured
4591  * @enabled_tc: TC bitmap
4592  *
4593  * This configures a particular VSI for TCs that are mapped to the
4594  * given TC bitmap. It uses default bandwidth share for TCs across
4595  * VSIs to configure TC for a particular VSI.
4596  *
4597  * NOTE:
4598  * It is expected that the VSI queues have been quisced before calling
4599  * this function.
4600  **/
4601 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4602 {
4603         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4604         struct i40e_vsi_context ctxt;
4605         int ret = 0;
4606         int i;
4607
4608         /* Check if enabled_tc is same as existing or new TCs */
4609         if (vsi->tc_config.enabled_tc == enabled_tc)
4610                 return ret;
4611
4612         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4613         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4614                 if (enabled_tc & BIT_ULL(i))
4615                         bw_share[i] = 1;
4616         }
4617
4618         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4619         if (ret) {
4620                 dev_info(&vsi->back->pdev->dev,
4621                          "Failed configuring TC map %d for VSI %d\n",
4622                          enabled_tc, vsi->seid);
4623                 goto out;
4624         }
4625
4626         /* Update Queue Pairs Mapping for currently enabled UPs */
4627         ctxt.seid = vsi->seid;
4628         ctxt.pf_num = vsi->back->hw.pf_id;
4629         ctxt.vf_num = 0;
4630         ctxt.uplink_seid = vsi->uplink_seid;
4631         ctxt.info = vsi->info;
4632         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4633
4634         /* Update the VSI after updating the VSI queue-mapping information */
4635         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4636         if (ret) {
4637                 dev_info(&vsi->back->pdev->dev,
4638                          "Update vsi tc config failed, err %s aq_err %s\n",
4639                          i40e_stat_str(&vsi->back->hw, ret),
4640                          i40e_aq_str(&vsi->back->hw,
4641                                      vsi->back->hw.aq.asq_last_status));
4642                 goto out;
4643         }
4644         /* update the local VSI info with updated queue map */
4645         i40e_vsi_update_queue_map(vsi, &ctxt);
4646         vsi->info.valid_sections = 0;
4647
4648         /* Update current VSI BW information */
4649         ret = i40e_vsi_get_bw_info(vsi);
4650         if (ret) {
4651                 dev_info(&vsi->back->pdev->dev,
4652                          "Failed updating vsi bw info, err %s aq_err %s\n",
4653                          i40e_stat_str(&vsi->back->hw, ret),
4654                          i40e_aq_str(&vsi->back->hw,
4655                                      vsi->back->hw.aq.asq_last_status));
4656                 goto out;
4657         }
4658
4659         /* Update the netdev TC setup */
4660         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4661 out:
4662         return ret;
4663 }
4664
4665 /**
4666  * i40e_veb_config_tc - Configure TCs for given VEB
4667  * @veb: given VEB
4668  * @enabled_tc: TC bitmap
4669  *
4670  * Configures given TC bitmap for VEB (switching) element
4671  **/
4672 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4673 {
4674         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4675         struct i40e_pf *pf = veb->pf;
4676         int ret = 0;
4677         int i;
4678
4679         /* No TCs or already enabled TCs just return */
4680         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4681                 return ret;
4682
4683         bw_data.tc_valid_bits = enabled_tc;
4684         /* bw_data.absolute_credits is not set (relative) */
4685
4686         /* Enable ETS TCs with equal BW Share for now */
4687         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4688                 if (enabled_tc & BIT_ULL(i))
4689                         bw_data.tc_bw_share_credits[i] = 1;
4690         }
4691
4692         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4693                                                    &bw_data, NULL);
4694         if (ret) {
4695                 dev_info(&pf->pdev->dev,
4696                          "VEB bw config failed, err %s aq_err %s\n",
4697                          i40e_stat_str(&pf->hw, ret),
4698                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4699                 goto out;
4700         }
4701
4702         /* Update the BW information */
4703         ret = i40e_veb_get_bw_info(veb);
4704         if (ret) {
4705                 dev_info(&pf->pdev->dev,
4706                          "Failed getting veb bw config, err %s aq_err %s\n",
4707                          i40e_stat_str(&pf->hw, ret),
4708                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4709         }
4710
4711 out:
4712         return ret;
4713 }
4714
4715 #ifdef CONFIG_I40E_DCB
4716 /**
4717  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4718  * @pf: PF struct
4719  *
4720  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4721  * the caller would've quiesce all the VSIs before calling
4722  * this function
4723  **/
4724 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4725 {
4726         u8 tc_map = 0;
4727         int ret;
4728         u8 v;
4729
4730         /* Enable the TCs available on PF to all VEBs */
4731         tc_map = i40e_pf_get_tc_map(pf);
4732         for (v = 0; v < I40E_MAX_VEB; v++) {
4733                 if (!pf->veb[v])
4734                         continue;
4735                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4736                 if (ret) {
4737                         dev_info(&pf->pdev->dev,
4738                                  "Failed configuring TC for VEB seid=%d\n",
4739                                  pf->veb[v]->seid);
4740                         /* Will try to configure as many components */
4741                 }
4742         }
4743
4744         /* Update each VSI */
4745         for (v = 0; v < pf->num_alloc_vsi; v++) {
4746                 if (!pf->vsi[v])
4747                         continue;
4748
4749                 /* - Enable all TCs for the LAN VSI
4750 #ifdef I40E_FCOE
4751                  * - For FCoE VSI only enable the TC configured
4752                  *   as per the APP TLV
4753 #endif
4754                  * - For all others keep them at TC0 for now
4755                  */
4756                 if (v == pf->lan_vsi)
4757                         tc_map = i40e_pf_get_tc_map(pf);
4758                 else
4759                         tc_map = i40e_pf_get_default_tc(pf);
4760 #ifdef I40E_FCOE
4761                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4762                         tc_map = i40e_get_fcoe_tc_map(pf);
4763 #endif /* #ifdef I40E_FCOE */
4764
4765                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4766                 if (ret) {
4767                         dev_info(&pf->pdev->dev,
4768                                  "Failed configuring TC for VSI seid=%d\n",
4769                                  pf->vsi[v]->seid);
4770                         /* Will try to configure as many components */
4771                 } else {
4772                         /* Re-configure VSI vectors based on updated TC map */
4773                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4774                         if (pf->vsi[v]->netdev)
4775                                 i40e_dcbnl_set_all(pf->vsi[v]);
4776                 }
4777         }
4778 }
4779
4780 /**
4781  * i40e_resume_port_tx - Resume port Tx
4782  * @pf: PF struct
4783  *
4784  * Resume a port's Tx and issue a PF reset in case of failure to
4785  * resume.
4786  **/
4787 static int i40e_resume_port_tx(struct i40e_pf *pf)
4788 {
4789         struct i40e_hw *hw = &pf->hw;
4790         int ret;
4791
4792         ret = i40e_aq_resume_port_tx(hw, NULL);
4793         if (ret) {
4794                 dev_info(&pf->pdev->dev,
4795                          "Resume Port Tx failed, err %s aq_err %s\n",
4796                           i40e_stat_str(&pf->hw, ret),
4797                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4798                 /* Schedule PF reset to recover */
4799                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4800                 i40e_service_event_schedule(pf);
4801         }
4802
4803         return ret;
4804 }
4805
4806 /**
4807  * i40e_init_pf_dcb - Initialize DCB configuration
4808  * @pf: PF being configured
4809  *
4810  * Query the current DCB configuration and cache it
4811  * in the hardware structure
4812  **/
4813 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4814 {
4815         struct i40e_hw *hw = &pf->hw;
4816         int err = 0;
4817
4818         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4819         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4820             (pf->hw.aq.fw_maj_ver < 4))
4821                 goto out;
4822
4823         /* Get the initial DCB configuration */
4824         err = i40e_init_dcb(hw);
4825         if (!err) {
4826                 /* Device/Function is not DCBX capable */
4827                 if ((!hw->func_caps.dcb) ||
4828                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4829                         dev_info(&pf->pdev->dev,
4830                                  "DCBX offload is not supported or is disabled for this PF.\n");
4831
4832                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4833                                 goto out;
4834
4835                 } else {
4836                         /* When status is not DISABLED then DCBX in FW */
4837                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4838                                        DCB_CAP_DCBX_VER_IEEE;
4839
4840                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4841                         /* Enable DCB tagging only when more than one TC */
4842                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4843                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4844                         dev_dbg(&pf->pdev->dev,
4845                                 "DCBX offload is supported for this PF.\n");
4846                 }
4847         } else {
4848                 dev_info(&pf->pdev->dev,
4849                          "Query for DCB configuration failed, err %s aq_err %s\n",
4850                          i40e_stat_str(&pf->hw, err),
4851                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4852         }
4853
4854 out:
4855         return err;
4856 }
4857 #endif /* CONFIG_I40E_DCB */
4858 #define SPEED_SIZE 14
4859 #define FC_SIZE 8
4860 /**
4861  * i40e_print_link_message - print link up or down
4862  * @vsi: the VSI for which link needs a message
4863  */
4864 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4865 {
4866         char speed[SPEED_SIZE] = "Unknown";
4867         char fc[FC_SIZE] = "RX/TX";
4868
4869         if (!isup) {
4870                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4871                 return;
4872         }
4873
4874         /* Warn user if link speed on NPAR enabled partition is not at
4875          * least 10GB
4876          */
4877         if (vsi->back->hw.func_caps.npar_enable &&
4878             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4879              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4880                 netdev_warn(vsi->netdev,
4881                             "The partition detected link speed that is less than 10Gbps\n");
4882
4883         switch (vsi->back->hw.phy.link_info.link_speed) {
4884         case I40E_LINK_SPEED_40GB:
4885                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4886                 break;
4887         case I40E_LINK_SPEED_20GB:
4888                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4889                 break;
4890         case I40E_LINK_SPEED_10GB:
4891                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4892                 break;
4893         case I40E_LINK_SPEED_1GB:
4894                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4895                 break;
4896         case I40E_LINK_SPEED_100MB:
4897                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4898                 break;
4899         default:
4900                 break;
4901         }
4902
4903         switch (vsi->back->hw.fc.current_mode) {
4904         case I40E_FC_FULL:
4905                 strlcpy(fc, "RX/TX", FC_SIZE);
4906                 break;
4907         case I40E_FC_TX_PAUSE:
4908                 strlcpy(fc, "TX", FC_SIZE);
4909                 break;
4910         case I40E_FC_RX_PAUSE:
4911                 strlcpy(fc, "RX", FC_SIZE);
4912                 break;
4913         default:
4914                 strlcpy(fc, "None", FC_SIZE);
4915                 break;
4916         }
4917
4918         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4919                     speed, fc);
4920 }
4921
4922 /**
4923  * i40e_up_complete - Finish the last steps of bringing up a connection
4924  * @vsi: the VSI being configured
4925  **/
4926 static int i40e_up_complete(struct i40e_vsi *vsi)
4927 {
4928         struct i40e_pf *pf = vsi->back;
4929         int err;
4930
4931         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4932                 i40e_vsi_configure_msix(vsi);
4933         else
4934                 i40e_configure_msi_and_legacy(vsi);
4935
4936         /* start rings */
4937         err = i40e_vsi_control_rings(vsi, true);
4938         if (err)
4939                 return err;
4940
4941         clear_bit(__I40E_DOWN, &vsi->state);
4942         i40e_napi_enable_all(vsi);
4943         i40e_vsi_enable_irq(vsi);
4944
4945         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4946             (vsi->netdev)) {
4947                 i40e_print_link_message(vsi, true);
4948                 netif_tx_start_all_queues(vsi->netdev);
4949                 netif_carrier_on(vsi->netdev);
4950         } else if (vsi->netdev) {
4951                 i40e_print_link_message(vsi, false);
4952                 /* need to check for qualified module here*/
4953                 if ((pf->hw.phy.link_info.link_info &
4954                         I40E_AQ_MEDIA_AVAILABLE) &&
4955                     (!(pf->hw.phy.link_info.an_info &
4956                         I40E_AQ_QUALIFIED_MODULE)))
4957                         netdev_err(vsi->netdev,
4958                                    "the driver failed to link because an unqualified module was detected.");
4959         }
4960
4961         /* replay FDIR SB filters */
4962         if (vsi->type == I40E_VSI_FDIR) {
4963                 /* reset fd counters */
4964                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4965                 if (pf->fd_tcp_rule > 0) {
4966                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4967                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4968                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4969                         pf->fd_tcp_rule = 0;
4970                 }
4971                 i40e_fdir_filter_restore(vsi);
4972         }
4973         i40e_service_event_schedule(pf);
4974
4975         return 0;
4976 }
4977
4978 /**
4979  * i40e_vsi_reinit_locked - Reset the VSI
4980  * @vsi: the VSI being configured
4981  *
4982  * Rebuild the ring structs after some configuration
4983  * has changed, e.g. MTU size.
4984  **/
4985 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4986 {
4987         struct i40e_pf *pf = vsi->back;
4988
4989         WARN_ON(in_interrupt());
4990         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4991                 usleep_range(1000, 2000);
4992         i40e_down(vsi);
4993
4994         /* Give a VF some time to respond to the reset.  The
4995          * two second wait is based upon the watchdog cycle in
4996          * the VF driver.
4997          */
4998         if (vsi->type == I40E_VSI_SRIOV)
4999                 msleep(2000);
5000         i40e_up(vsi);
5001         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5002 }
5003
5004 /**
5005  * i40e_up - Bring the connection back up after being down
5006  * @vsi: the VSI being configured
5007  **/
5008 int i40e_up(struct i40e_vsi *vsi)
5009 {
5010         int err;
5011
5012         err = i40e_vsi_configure(vsi);
5013         if (!err)
5014                 err = i40e_up_complete(vsi);
5015
5016         return err;
5017 }
5018
5019 /**
5020  * i40e_down - Shutdown the connection processing
5021  * @vsi: the VSI being stopped
5022  **/
5023 void i40e_down(struct i40e_vsi *vsi)
5024 {
5025         int i;
5026
5027         /* It is assumed that the caller of this function
5028          * sets the vsi->state __I40E_DOWN bit.
5029          */
5030         if (vsi->netdev) {
5031                 netif_carrier_off(vsi->netdev);
5032                 netif_tx_disable(vsi->netdev);
5033         }
5034         i40e_vsi_disable_irq(vsi);
5035         i40e_vsi_control_rings(vsi, false);
5036         i40e_napi_disable_all(vsi);
5037
5038         for (i = 0; i < vsi->num_queue_pairs; i++) {
5039                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5040                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5041         }
5042 }
5043
5044 /**
5045  * i40e_setup_tc - configure multiple traffic classes
5046  * @netdev: net device to configure
5047  * @tc: number of traffic classes to enable
5048  **/
5049 #ifdef I40E_FCOE
5050 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5051 #else
5052 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5053 #endif
5054 {
5055         struct i40e_netdev_priv *np = netdev_priv(netdev);
5056         struct i40e_vsi *vsi = np->vsi;
5057         struct i40e_pf *pf = vsi->back;
5058         u8 enabled_tc = 0;
5059         int ret = -EINVAL;
5060         int i;
5061
5062         /* Check if DCB enabled to continue */
5063         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5064                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5065                 goto exit;
5066         }
5067
5068         /* Check if MFP enabled */
5069         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5070                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5071                 goto exit;
5072         }
5073
5074         /* Check whether tc count is within enabled limit */
5075         if (tc > i40e_pf_get_num_tc(pf)) {
5076                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5077                 goto exit;
5078         }
5079
5080         /* Generate TC map for number of tc requested */
5081         for (i = 0; i < tc; i++)
5082                 enabled_tc |= BIT_ULL(i);
5083
5084         /* Requesting same TC configuration as already enabled */
5085         if (enabled_tc == vsi->tc_config.enabled_tc)
5086                 return 0;
5087
5088         /* Quiesce VSI queues */
5089         i40e_quiesce_vsi(vsi);
5090
5091         /* Configure VSI for enabled TCs */
5092         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5093         if (ret) {
5094                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5095                             vsi->seid);
5096                 goto exit;
5097         }
5098
5099         /* Unquiesce VSI */
5100         i40e_unquiesce_vsi(vsi);
5101
5102 exit:
5103         return ret;
5104 }
5105
5106 /**
5107  * i40e_open - Called when a network interface is made active
5108  * @netdev: network interface device structure
5109  *
5110  * The open entry point is called when a network interface is made
5111  * active by the system (IFF_UP).  At this point all resources needed
5112  * for transmit and receive operations are allocated, the interrupt
5113  * handler is registered with the OS, the netdev watchdog subtask is
5114  * enabled, and the stack is notified that the interface is ready.
5115  *
5116  * Returns 0 on success, negative value on failure
5117  **/
5118 int i40e_open(struct net_device *netdev)
5119 {
5120         struct i40e_netdev_priv *np = netdev_priv(netdev);
5121         struct i40e_vsi *vsi = np->vsi;
5122         struct i40e_pf *pf = vsi->back;
5123         int err;
5124
5125         /* disallow open during test or if eeprom is broken */
5126         if (test_bit(__I40E_TESTING, &pf->state) ||
5127             test_bit(__I40E_BAD_EEPROM, &pf->state))
5128                 return -EBUSY;
5129
5130         netif_carrier_off(netdev);
5131
5132         err = i40e_vsi_open(vsi);
5133         if (err)
5134                 return err;
5135
5136         /* configure global TSO hardware offload settings */
5137         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5138                                                        TCP_FLAG_FIN) >> 16);
5139         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5140                                                        TCP_FLAG_FIN |
5141                                                        TCP_FLAG_CWR) >> 16);
5142         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5143
5144 #ifdef CONFIG_I40E_VXLAN
5145         vxlan_get_rx_port(netdev);
5146 #endif
5147
5148         return 0;
5149 }
5150
5151 /**
5152  * i40e_vsi_open -
5153  * @vsi: the VSI to open
5154  *
5155  * Finish initialization of the VSI.
5156  *
5157  * Returns 0 on success, negative value on failure
5158  **/
5159 int i40e_vsi_open(struct i40e_vsi *vsi)
5160 {
5161         struct i40e_pf *pf = vsi->back;
5162         char int_name[I40E_INT_NAME_STR_LEN];
5163         int err;
5164
5165         /* allocate descriptors */
5166         err = i40e_vsi_setup_tx_resources(vsi);
5167         if (err)
5168                 goto err_setup_tx;
5169         err = i40e_vsi_setup_rx_resources(vsi);
5170         if (err)
5171                 goto err_setup_rx;
5172
5173         err = i40e_vsi_configure(vsi);
5174         if (err)
5175                 goto err_setup_rx;
5176
5177         if (vsi->netdev) {
5178                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5179                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5180                 err = i40e_vsi_request_irq(vsi, int_name);
5181                 if (err)
5182                         goto err_setup_rx;
5183
5184                 /* Notify the stack of the actual queue counts. */
5185                 err = netif_set_real_num_tx_queues(vsi->netdev,
5186                                                    vsi->num_queue_pairs);
5187                 if (err)
5188                         goto err_set_queues;
5189
5190                 err = netif_set_real_num_rx_queues(vsi->netdev,
5191                                                    vsi->num_queue_pairs);
5192                 if (err)
5193                         goto err_set_queues;
5194
5195         } else if (vsi->type == I40E_VSI_FDIR) {
5196                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5197                          dev_driver_string(&pf->pdev->dev),
5198                          dev_name(&pf->pdev->dev));
5199                 err = i40e_vsi_request_irq(vsi, int_name);
5200
5201         } else {
5202                 err = -EINVAL;
5203                 goto err_setup_rx;
5204         }
5205
5206         err = i40e_up_complete(vsi);
5207         if (err)
5208                 goto err_up_complete;
5209
5210         return 0;
5211
5212 err_up_complete:
5213         i40e_down(vsi);
5214 err_set_queues:
5215         i40e_vsi_free_irq(vsi);
5216 err_setup_rx:
5217         i40e_vsi_free_rx_resources(vsi);
5218 err_setup_tx:
5219         i40e_vsi_free_tx_resources(vsi);
5220         if (vsi == pf->vsi[pf->lan_vsi])
5221                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5222
5223         return err;
5224 }
5225
5226 /**
5227  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5228  * @pf: Pointer to PF
5229  *
5230  * This function destroys the hlist where all the Flow Director
5231  * filters were saved.
5232  **/
5233 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5234 {
5235         struct i40e_fdir_filter *filter;
5236         struct hlist_node *node2;
5237
5238         hlist_for_each_entry_safe(filter, node2,
5239                                   &pf->fdir_filter_list, fdir_node) {
5240                 hlist_del(&filter->fdir_node);
5241                 kfree(filter);
5242         }
5243         pf->fdir_pf_active_filters = 0;
5244 }
5245
5246 /**
5247  * i40e_close - Disables a network interface
5248  * @netdev: network interface device structure
5249  *
5250  * The close entry point is called when an interface is de-activated
5251  * by the OS.  The hardware is still under the driver's control, but
5252  * this netdev interface is disabled.
5253  *
5254  * Returns 0, this is not allowed to fail
5255  **/
5256 #ifdef I40E_FCOE
5257 int i40e_close(struct net_device *netdev)
5258 #else
5259 static int i40e_close(struct net_device *netdev)
5260 #endif
5261 {
5262         struct i40e_netdev_priv *np = netdev_priv(netdev);
5263         struct i40e_vsi *vsi = np->vsi;
5264
5265         i40e_vsi_close(vsi);
5266
5267         return 0;
5268 }
5269
5270 /**
5271  * i40e_do_reset - Start a PF or Core Reset sequence
5272  * @pf: board private structure
5273  * @reset_flags: which reset is requested
5274  *
5275  * The essential difference in resets is that the PF Reset
5276  * doesn't clear the packet buffers, doesn't reset the PE
5277  * firmware, and doesn't bother the other PFs on the chip.
5278  **/
5279 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5280 {
5281         u32 val;
5282
5283         WARN_ON(in_interrupt());
5284
5285         if (i40e_check_asq_alive(&pf->hw))
5286                 i40e_vc_notify_reset(pf);
5287
5288         /* do the biggest reset indicated */
5289         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5290
5291                 /* Request a Global Reset
5292                  *
5293                  * This will start the chip's countdown to the actual full
5294                  * chip reset event, and a warning interrupt to be sent
5295                  * to all PFs, including the requestor.  Our handler
5296                  * for the warning interrupt will deal with the shutdown
5297                  * and recovery of the switch setup.
5298                  */
5299                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5300                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5301                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5302                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5303
5304         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5305
5306                 /* Request a Core Reset
5307                  *
5308                  * Same as Global Reset, except does *not* include the MAC/PHY
5309                  */
5310                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5311                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5312                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5313                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5314                 i40e_flush(&pf->hw);
5315
5316         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5317
5318                 /* Request a PF Reset
5319                  *
5320                  * Resets only the PF-specific registers
5321                  *
5322                  * This goes directly to the tear-down and rebuild of
5323                  * the switch, since we need to do all the recovery as
5324                  * for the Core Reset.
5325                  */
5326                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5327                 i40e_handle_reset_warning(pf);
5328
5329         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5330                 int v;
5331
5332                 /* Find the VSI(s) that requested a re-init */
5333                 dev_info(&pf->pdev->dev,
5334                          "VSI reinit requested\n");
5335                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5336                         struct i40e_vsi *vsi = pf->vsi[v];
5337                         if (vsi != NULL &&
5338                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5339                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5340                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5341                         }
5342                 }
5343
5344                 /* no further action needed, so return now */
5345                 return;
5346         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5347                 int v;
5348
5349                 /* Find the VSI(s) that needs to be brought down */
5350                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5351                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5352                         struct i40e_vsi *vsi = pf->vsi[v];
5353                         if (vsi != NULL &&
5354                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5355                                 set_bit(__I40E_DOWN, &vsi->state);
5356                                 i40e_down(vsi);
5357                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5358                         }
5359                 }
5360
5361                 /* no further action needed, so return now */
5362                 return;
5363         } else {
5364                 dev_info(&pf->pdev->dev,
5365                          "bad reset request 0x%08x\n", reset_flags);
5366                 return;
5367         }
5368 }
5369
5370 #ifdef CONFIG_I40E_DCB
5371 /**
5372  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5373  * @pf: board private structure
5374  * @old_cfg: current DCB config
5375  * @new_cfg: new DCB config
5376  **/
5377 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5378                             struct i40e_dcbx_config *old_cfg,
5379                             struct i40e_dcbx_config *new_cfg)
5380 {
5381         bool need_reconfig = false;
5382
5383         /* Check if ETS configuration has changed */
5384         if (memcmp(&new_cfg->etscfg,
5385                    &old_cfg->etscfg,
5386                    sizeof(new_cfg->etscfg))) {
5387                 /* If Priority Table has changed reconfig is needed */
5388                 if (memcmp(&new_cfg->etscfg.prioritytable,
5389                            &old_cfg->etscfg.prioritytable,
5390                            sizeof(new_cfg->etscfg.prioritytable))) {
5391                         need_reconfig = true;
5392                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5393                 }
5394
5395                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5396                            &old_cfg->etscfg.tcbwtable,
5397                            sizeof(new_cfg->etscfg.tcbwtable)))
5398                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5399
5400                 if (memcmp(&new_cfg->etscfg.tsatable,
5401                            &old_cfg->etscfg.tsatable,
5402                            sizeof(new_cfg->etscfg.tsatable)))
5403                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5404         }
5405
5406         /* Check if PFC configuration has changed */
5407         if (memcmp(&new_cfg->pfc,
5408                    &old_cfg->pfc,
5409                    sizeof(new_cfg->pfc))) {
5410                 need_reconfig = true;
5411                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5412         }
5413
5414         /* Check if APP Table has changed */
5415         if (memcmp(&new_cfg->app,
5416                    &old_cfg->app,
5417                    sizeof(new_cfg->app))) {
5418                 need_reconfig = true;
5419                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5420         }
5421
5422         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5423         return need_reconfig;
5424 }
5425
5426 /**
5427  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5428  * @pf: board private structure
5429  * @e: event info posted on ARQ
5430  **/
5431 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5432                                   struct i40e_arq_event_info *e)
5433 {
5434         struct i40e_aqc_lldp_get_mib *mib =
5435                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5436         struct i40e_hw *hw = &pf->hw;
5437         struct i40e_dcbx_config tmp_dcbx_cfg;
5438         bool need_reconfig = false;
5439         int ret = 0;
5440         u8 type;
5441
5442         /* Not DCB capable or capability disabled */
5443         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5444                 return ret;
5445
5446         /* Ignore if event is not for Nearest Bridge */
5447         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5448                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5449         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5450         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5451                 return ret;
5452
5453         /* Check MIB Type and return if event for Remote MIB update */
5454         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5455         dev_dbg(&pf->pdev->dev,
5456                 "LLDP event mib type %s\n", type ? "remote" : "local");
5457         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5458                 /* Update the remote cached instance and return */
5459                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5460                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5461                                 &hw->remote_dcbx_config);
5462                 goto exit;
5463         }
5464
5465         /* Store the old configuration */
5466         tmp_dcbx_cfg = hw->local_dcbx_config;
5467
5468         /* Reset the old DCBx configuration data */
5469         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5470         /* Get updated DCBX data from firmware */
5471         ret = i40e_get_dcb_config(&pf->hw);
5472         if (ret) {
5473                 dev_info(&pf->pdev->dev,
5474                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5475                          i40e_stat_str(&pf->hw, ret),
5476                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5477                 goto exit;
5478         }
5479
5480         /* No change detected in DCBX configs */
5481         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5482                     sizeof(tmp_dcbx_cfg))) {
5483                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5484                 goto exit;
5485         }
5486
5487         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5488                                                &hw->local_dcbx_config);
5489
5490         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5491
5492         if (!need_reconfig)
5493                 goto exit;
5494
5495         /* Enable DCB tagging only when more than one TC */
5496         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5497                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5498         else
5499                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5500
5501         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5502         /* Reconfiguration needed quiesce all VSIs */
5503         i40e_pf_quiesce_all_vsi(pf);
5504
5505         /* Changes in configuration update VEB/VSI */
5506         i40e_dcb_reconfigure(pf);
5507
5508         ret = i40e_resume_port_tx(pf);
5509
5510         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5511         /* In case of error no point in resuming VSIs */
5512         if (ret)
5513                 goto exit;
5514
5515         /* Wait for the PF's Tx queues to be disabled */
5516         ret = i40e_pf_wait_txq_disabled(pf);
5517         if (ret) {
5518                 /* Schedule PF reset to recover */
5519                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5520                 i40e_service_event_schedule(pf);
5521         } else {
5522                 i40e_pf_unquiesce_all_vsi(pf);
5523         }
5524
5525 exit:
5526         return ret;
5527 }
5528 #endif /* CONFIG_I40E_DCB */
5529
5530 /**
5531  * i40e_do_reset_safe - Protected reset path for userland calls.
5532  * @pf: board private structure
5533  * @reset_flags: which reset is requested
5534  *
5535  **/
5536 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5537 {
5538         rtnl_lock();
5539         i40e_do_reset(pf, reset_flags);
5540         rtnl_unlock();
5541 }
5542
5543 /**
5544  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5545  * @pf: board private structure
5546  * @e: event info posted on ARQ
5547  *
5548  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5549  * and VF queues
5550  **/
5551 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5552                                            struct i40e_arq_event_info *e)
5553 {
5554         struct i40e_aqc_lan_overflow *data =
5555                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5556         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5557         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5558         struct i40e_hw *hw = &pf->hw;
5559         struct i40e_vf *vf;
5560         u16 vf_id;
5561
5562         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5563                 queue, qtx_ctl);
5564
5565         /* Queue belongs to VF, find the VF and issue VF reset */
5566         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5567             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5568                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5569                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5570                 vf_id -= hw->func_caps.vf_base_id;
5571                 vf = &pf->vf[vf_id];
5572                 i40e_vc_notify_vf_reset(vf);
5573                 /* Allow VF to process pending reset notification */
5574                 msleep(20);
5575                 i40e_reset_vf(vf, false);
5576         }
5577 }
5578
5579 /**
5580  * i40e_service_event_complete - Finish up the service event
5581  * @pf: board private structure
5582  **/
5583 static void i40e_service_event_complete(struct i40e_pf *pf)
5584 {
5585         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5586
5587         /* flush memory to make sure state is correct before next watchog */
5588         smp_mb__before_atomic();
5589         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5590 }
5591
5592 /**
5593  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5594  * @pf: board private structure
5595  **/
5596 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5597 {
5598         u32 val, fcnt_prog;
5599
5600         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5601         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5602         return fcnt_prog;
5603 }
5604
5605 /**
5606  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5607  * @pf: board private structure
5608  **/
5609 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5610 {
5611         u32 val, fcnt_prog;
5612
5613         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5614         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5615                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5616                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5617         return fcnt_prog;
5618 }
5619
5620 /**
5621  * i40e_get_global_fd_count - Get total FD filters programmed on device
5622  * @pf: board private structure
5623  **/
5624 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5625 {
5626         u32 val, fcnt_prog;
5627
5628         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5629         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5630                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5631                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5632         return fcnt_prog;
5633 }
5634
5635 /**
5636  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5637  * @pf: board private structure
5638  **/
5639 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5640 {
5641         u32 fcnt_prog, fcnt_avail;
5642
5643         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5644                 return;
5645
5646         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5647          * to re-enable
5648          */
5649         fcnt_prog = i40e_get_global_fd_count(pf);
5650         fcnt_avail = pf->fdir_pf_filter_count;
5651         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5652             (pf->fd_add_err == 0) ||
5653             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5654                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5655                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5656                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5657                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5658                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5659                 }
5660         }
5661         /* Wait for some more space to be available to turn on ATR */
5662         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5663                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5664                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5665                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5666                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5667                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5668                 }
5669         }
5670 }
5671
5672 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5673 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5674 /**
5675  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5676  * @pf: board private structure
5677  **/
5678 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5679 {
5680         unsigned long min_flush_time;
5681         int flush_wait_retry = 50;
5682         bool disable_atr = false;
5683         int fd_room;
5684         int reg;
5685
5686         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5687                 return;
5688
5689         if (time_after(jiffies, pf->fd_flush_timestamp +
5690                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5691                 /* If the flush is happening too quick and we have mostly
5692                  * SB rules we should not re-enable ATR for some time.
5693                  */
5694                 min_flush_time = pf->fd_flush_timestamp
5695                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5696                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5697
5698                 if (!(time_after(jiffies, min_flush_time)) &&
5699                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5700                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5701                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5702                         disable_atr = true;
5703                 }
5704
5705                 pf->fd_flush_timestamp = jiffies;
5706                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5707                 /* flush all filters */
5708                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5709                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5710                 i40e_flush(&pf->hw);
5711                 pf->fd_flush_cnt++;
5712                 pf->fd_add_err = 0;
5713                 do {
5714                         /* Check FD flush status every 5-6msec */
5715                         usleep_range(5000, 6000);
5716                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5717                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5718                                 break;
5719                 } while (flush_wait_retry--);
5720                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5721                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5722                 } else {
5723                         /* replay sideband filters */
5724                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5725                         if (!disable_atr)
5726                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5727                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5728                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5729                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5730                 }
5731         }
5732 }
5733
5734 /**
5735  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5736  * @pf: board private structure
5737  **/
5738 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5739 {
5740         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5741 }
5742
5743 /* We can see up to 256 filter programming desc in transit if the filters are
5744  * being applied really fast; before we see the first
5745  * filter miss error on Rx queue 0. Accumulating enough error messages before
5746  * reacting will make sure we don't cause flush too often.
5747  */
5748 #define I40E_MAX_FD_PROGRAM_ERROR 256
5749
5750 /**
5751  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5752  * @pf: board private structure
5753  **/
5754 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5755 {
5756
5757         /* if interface is down do nothing */
5758         if (test_bit(__I40E_DOWN, &pf->state))
5759                 return;
5760
5761         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5762                 return;
5763
5764         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5765                 i40e_fdir_flush_and_replay(pf);
5766
5767         i40e_fdir_check_and_reenable(pf);
5768
5769 }
5770
5771 /**
5772  * i40e_vsi_link_event - notify VSI of a link event
5773  * @vsi: vsi to be notified
5774  * @link_up: link up or down
5775  **/
5776 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5777 {
5778         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5779                 return;
5780
5781         switch (vsi->type) {
5782         case I40E_VSI_MAIN:
5783 #ifdef I40E_FCOE
5784         case I40E_VSI_FCOE:
5785 #endif
5786                 if (!vsi->netdev || !vsi->netdev_registered)
5787                         break;
5788
5789                 if (link_up) {
5790                         netif_carrier_on(vsi->netdev);
5791                         netif_tx_wake_all_queues(vsi->netdev);
5792                 } else {
5793                         netif_carrier_off(vsi->netdev);
5794                         netif_tx_stop_all_queues(vsi->netdev);
5795                 }
5796                 break;
5797
5798         case I40E_VSI_SRIOV:
5799         case I40E_VSI_VMDQ2:
5800         case I40E_VSI_CTRL:
5801         case I40E_VSI_MIRROR:
5802         default:
5803                 /* there is no notification for other VSIs */
5804                 break;
5805         }
5806 }
5807
5808 /**
5809  * i40e_veb_link_event - notify elements on the veb of a link event
5810  * @veb: veb to be notified
5811  * @link_up: link up or down
5812  **/
5813 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5814 {
5815         struct i40e_pf *pf;
5816         int i;
5817
5818         if (!veb || !veb->pf)
5819                 return;
5820         pf = veb->pf;
5821
5822         /* depth first... */
5823         for (i = 0; i < I40E_MAX_VEB; i++)
5824                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5825                         i40e_veb_link_event(pf->veb[i], link_up);
5826
5827         /* ... now the local VSIs */
5828         for (i = 0; i < pf->num_alloc_vsi; i++)
5829                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5830                         i40e_vsi_link_event(pf->vsi[i], link_up);
5831 }
5832
5833 /**
5834  * i40e_link_event - Update netif_carrier status
5835  * @pf: board private structure
5836  **/
5837 static void i40e_link_event(struct i40e_pf *pf)
5838 {
5839         bool new_link, old_link;
5840         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5841         u8 new_link_speed, old_link_speed;
5842
5843         /* set this to force the get_link_status call to refresh state */
5844         pf->hw.phy.get_link_info = true;
5845
5846         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5847         new_link = i40e_get_link_status(&pf->hw);
5848         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5849         new_link_speed = pf->hw.phy.link_info.link_speed;
5850
5851         if (new_link == old_link &&
5852             new_link_speed == old_link_speed &&
5853             (test_bit(__I40E_DOWN, &vsi->state) ||
5854              new_link == netif_carrier_ok(vsi->netdev)))
5855                 return;
5856
5857         if (!test_bit(__I40E_DOWN, &vsi->state))
5858                 i40e_print_link_message(vsi, new_link);
5859
5860         /* Notify the base of the switch tree connected to
5861          * the link.  Floating VEBs are not notified.
5862          */
5863         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5864                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5865         else
5866                 i40e_vsi_link_event(vsi, new_link);
5867
5868         if (pf->vf)
5869                 i40e_vc_notify_link_state(pf);
5870
5871         if (pf->flags & I40E_FLAG_PTP)
5872                 i40e_ptp_set_increment(pf);
5873 }
5874
5875 /**
5876  * i40e_watchdog_subtask - periodic checks not using event driven response
5877  * @pf: board private structure
5878  **/
5879 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5880 {
5881         int i;
5882
5883         /* if interface is down do nothing */
5884         if (test_bit(__I40E_DOWN, &pf->state) ||
5885             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5886                 return;
5887
5888         /* make sure we don't do these things too often */
5889         if (time_before(jiffies, (pf->service_timer_previous +
5890                                   pf->service_timer_period)))
5891                 return;
5892         pf->service_timer_previous = jiffies;
5893
5894         i40e_link_event(pf);
5895
5896         /* Update the stats for active netdevs so the network stack
5897          * can look at updated numbers whenever it cares to
5898          */
5899         for (i = 0; i < pf->num_alloc_vsi; i++)
5900                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5901                         i40e_update_stats(pf->vsi[i]);
5902
5903         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5904                 /* Update the stats for the active switching components */
5905                 for (i = 0; i < I40E_MAX_VEB; i++)
5906                         if (pf->veb[i])
5907                                 i40e_update_veb_stats(pf->veb[i]);
5908         }
5909
5910         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5911 }
5912
5913 /**
5914  * i40e_reset_subtask - Set up for resetting the device and driver
5915  * @pf: board private structure
5916  **/
5917 static void i40e_reset_subtask(struct i40e_pf *pf)
5918 {
5919         u32 reset_flags = 0;
5920
5921         rtnl_lock();
5922         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5923                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5924                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5925         }
5926         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5927                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5928                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5929         }
5930         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5931                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5932                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5933         }
5934         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5935                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5936                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5937         }
5938         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5939                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5940                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5941         }
5942
5943         /* If there's a recovery already waiting, it takes
5944          * precedence before starting a new reset sequence.
5945          */
5946         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5947                 i40e_handle_reset_warning(pf);
5948                 goto unlock;
5949         }
5950
5951         /* If we're already down or resetting, just bail */
5952         if (reset_flags &&
5953             !test_bit(__I40E_DOWN, &pf->state) &&
5954             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5955                 i40e_do_reset(pf, reset_flags);
5956
5957 unlock:
5958         rtnl_unlock();
5959 }
5960
5961 /**
5962  * i40e_handle_link_event - Handle link event
5963  * @pf: board private structure
5964  * @e: event info posted on ARQ
5965  **/
5966 static void i40e_handle_link_event(struct i40e_pf *pf,
5967                                    struct i40e_arq_event_info *e)
5968 {
5969         struct i40e_hw *hw = &pf->hw;
5970         struct i40e_aqc_get_link_status *status =
5971                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5972
5973         /* save off old link status information */
5974         hw->phy.link_info_old = hw->phy.link_info;
5975
5976         /* Do a new status request to re-enable LSE reporting
5977          * and load new status information into the hw struct
5978          * This completely ignores any state information
5979          * in the ARQ event info, instead choosing to always
5980          * issue the AQ update link status command.
5981          */
5982         i40e_link_event(pf);
5983
5984         /* check for unqualified module, if link is down */
5985         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5986             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5987             (!(status->link_info & I40E_AQ_LINK_UP)))
5988                 dev_err(&pf->pdev->dev,
5989                         "The driver failed to link because an unqualified module was detected.\n");
5990 }
5991
5992 /**
5993  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5994  * @pf: board private structure
5995  **/
5996 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5997 {
5998         struct i40e_arq_event_info event;
5999         struct i40e_hw *hw = &pf->hw;
6000         u16 pending, i = 0;
6001         i40e_status ret;
6002         u16 opcode;
6003         u32 oldval;
6004         u32 val;
6005
6006         /* Do not run clean AQ when PF reset fails */
6007         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6008                 return;
6009
6010         /* check for error indications */
6011         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6012         oldval = val;
6013         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6014                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6015                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6016         }
6017         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6018                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6019                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6020         }
6021         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6022                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6023                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6024         }
6025         if (oldval != val)
6026                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6027
6028         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6029         oldval = val;
6030         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6031                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6032                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6033         }
6034         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6035                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6036                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6037         }
6038         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6039                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6040                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6041         }
6042         if (oldval != val)
6043                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6044
6045         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6046         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6047         if (!event.msg_buf)
6048                 return;
6049
6050         do {
6051                 ret = i40e_clean_arq_element(hw, &event, &pending);
6052                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6053                         break;
6054                 else if (ret) {
6055                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6056                         break;
6057                 }
6058
6059                 opcode = le16_to_cpu(event.desc.opcode);
6060                 switch (opcode) {
6061
6062                 case i40e_aqc_opc_get_link_status:
6063                         i40e_handle_link_event(pf, &event);
6064                         break;
6065                 case i40e_aqc_opc_send_msg_to_pf:
6066                         ret = i40e_vc_process_vf_msg(pf,
6067                                         le16_to_cpu(event.desc.retval),
6068                                         le32_to_cpu(event.desc.cookie_high),
6069                                         le32_to_cpu(event.desc.cookie_low),
6070                                         event.msg_buf,
6071                                         event.msg_len);
6072                         break;
6073                 case i40e_aqc_opc_lldp_update_mib:
6074                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6075 #ifdef CONFIG_I40E_DCB
6076                         rtnl_lock();
6077                         ret = i40e_handle_lldp_event(pf, &event);
6078                         rtnl_unlock();
6079 #endif /* CONFIG_I40E_DCB */
6080                         break;
6081                 case i40e_aqc_opc_event_lan_overflow:
6082                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6083                         i40e_handle_lan_overflow_event(pf, &event);
6084                         break;
6085                 case i40e_aqc_opc_send_msg_to_peer:
6086                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6087                         break;
6088                 case i40e_aqc_opc_nvm_erase:
6089                 case i40e_aqc_opc_nvm_update:
6090                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6091                         break;
6092                 default:
6093                         dev_info(&pf->pdev->dev,
6094                                  "ARQ Error: Unknown event 0x%04x received\n",
6095                                  opcode);
6096                         break;
6097                 }
6098         } while (pending && (i++ < pf->adminq_work_limit));
6099
6100         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6101         /* re-enable Admin queue interrupt cause */
6102         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6103         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6104         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6105         i40e_flush(hw);
6106
6107         kfree(event.msg_buf);
6108 }
6109
6110 /**
6111  * i40e_verify_eeprom - make sure eeprom is good to use
6112  * @pf: board private structure
6113  **/
6114 static void i40e_verify_eeprom(struct i40e_pf *pf)
6115 {
6116         int err;
6117
6118         err = i40e_diag_eeprom_test(&pf->hw);
6119         if (err) {
6120                 /* retry in case of garbage read */
6121                 err = i40e_diag_eeprom_test(&pf->hw);
6122                 if (err) {
6123                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6124                                  err);
6125                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6126                 }
6127         }
6128
6129         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6130                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6131                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6132         }
6133 }
6134
6135 /**
6136  * i40e_enable_pf_switch_lb
6137  * @pf: pointer to the PF structure
6138  *
6139  * enable switch loop back or die - no point in a return value
6140  **/
6141 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6142 {
6143         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6144         struct i40e_vsi_context ctxt;
6145         int ret;
6146
6147         ctxt.seid = pf->main_vsi_seid;
6148         ctxt.pf_num = pf->hw.pf_id;
6149         ctxt.vf_num = 0;
6150         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6151         if (ret) {
6152                 dev_info(&pf->pdev->dev,
6153                          "couldn't get PF vsi config, err %s aq_err %s\n",
6154                          i40e_stat_str(&pf->hw, ret),
6155                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6156                 return;
6157         }
6158         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6159         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6160         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6161
6162         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6163         if (ret) {
6164                 dev_info(&pf->pdev->dev,
6165                          "update vsi switch failed, err %s aq_err %s\n",
6166                          i40e_stat_str(&pf->hw, ret),
6167                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6168         }
6169 }
6170
6171 /**
6172  * i40e_disable_pf_switch_lb
6173  * @pf: pointer to the PF structure
6174  *
6175  * disable switch loop back or die - no point in a return value
6176  **/
6177 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6178 {
6179         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6180         struct i40e_vsi_context ctxt;
6181         int ret;
6182
6183         ctxt.seid = pf->main_vsi_seid;
6184         ctxt.pf_num = pf->hw.pf_id;
6185         ctxt.vf_num = 0;
6186         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6187         if (ret) {
6188                 dev_info(&pf->pdev->dev,
6189                          "couldn't get PF vsi config, err %s aq_err %s\n",
6190                          i40e_stat_str(&pf->hw, ret),
6191                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6192                 return;
6193         }
6194         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6195         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6196         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6197
6198         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6199         if (ret) {
6200                 dev_info(&pf->pdev->dev,
6201                          "update vsi switch failed, err %s aq_err %s\n",
6202                          i40e_stat_str(&pf->hw, ret),
6203                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6204         }
6205 }
6206
6207 /**
6208  * i40e_config_bridge_mode - Configure the HW bridge mode
6209  * @veb: pointer to the bridge instance
6210  *
6211  * Configure the loop back mode for the LAN VSI that is downlink to the
6212  * specified HW bridge instance. It is expected this function is called
6213  * when a new HW bridge is instantiated.
6214  **/
6215 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6216 {
6217         struct i40e_pf *pf = veb->pf;
6218
6219         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6220                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6221         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6222                 i40e_disable_pf_switch_lb(pf);
6223         else
6224                 i40e_enable_pf_switch_lb(pf);
6225 }
6226
6227 /**
6228  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6229  * @veb: pointer to the VEB instance
6230  *
6231  * This is a recursive function that first builds the attached VSIs then
6232  * recurses in to build the next layer of VEB.  We track the connections
6233  * through our own index numbers because the seid's from the HW could
6234  * change across the reset.
6235  **/
6236 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6237 {
6238         struct i40e_vsi *ctl_vsi = NULL;
6239         struct i40e_pf *pf = veb->pf;
6240         int v, veb_idx;
6241         int ret;
6242
6243         /* build VSI that owns this VEB, temporarily attached to base VEB */
6244         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6245                 if (pf->vsi[v] &&
6246                     pf->vsi[v]->veb_idx == veb->idx &&
6247                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6248                         ctl_vsi = pf->vsi[v];
6249                         break;
6250                 }
6251         }
6252         if (!ctl_vsi) {
6253                 dev_info(&pf->pdev->dev,
6254                          "missing owner VSI for veb_idx %d\n", veb->idx);
6255                 ret = -ENOENT;
6256                 goto end_reconstitute;
6257         }
6258         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6259                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6260         ret = i40e_add_vsi(ctl_vsi);
6261         if (ret) {
6262                 dev_info(&pf->pdev->dev,
6263                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6264                          veb->idx, ret);
6265                 goto end_reconstitute;
6266         }
6267         i40e_vsi_reset_stats(ctl_vsi);
6268
6269         /* create the VEB in the switch and move the VSI onto the VEB */
6270         ret = i40e_add_veb(veb, ctl_vsi);
6271         if (ret)
6272                 goto end_reconstitute;
6273
6274         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6275                 veb->bridge_mode = BRIDGE_MODE_VEB;
6276         else
6277                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6278         i40e_config_bridge_mode(veb);
6279
6280         /* create the remaining VSIs attached to this VEB */
6281         for (v = 0; v < pf->num_alloc_vsi; v++) {
6282                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6283                         continue;
6284
6285                 if (pf->vsi[v]->veb_idx == veb->idx) {
6286                         struct i40e_vsi *vsi = pf->vsi[v];
6287                         vsi->uplink_seid = veb->seid;
6288                         ret = i40e_add_vsi(vsi);
6289                         if (ret) {
6290                                 dev_info(&pf->pdev->dev,
6291                                          "rebuild of vsi_idx %d failed: %d\n",
6292                                          v, ret);
6293                                 goto end_reconstitute;
6294                         }
6295                         i40e_vsi_reset_stats(vsi);
6296                 }
6297         }
6298
6299         /* create any VEBs attached to this VEB - RECURSION */
6300         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6301                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6302                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6303                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6304                         if (ret)
6305                                 break;
6306                 }
6307         }
6308
6309 end_reconstitute:
6310         return ret;
6311 }
6312
6313 /**
6314  * i40e_get_capabilities - get info about the HW
6315  * @pf: the PF struct
6316  **/
6317 static int i40e_get_capabilities(struct i40e_pf *pf)
6318 {
6319         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6320         u16 data_size;
6321         int buf_len;
6322         int err;
6323
6324         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6325         do {
6326                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6327                 if (!cap_buf)
6328                         return -ENOMEM;
6329
6330                 /* this loads the data into the hw struct for us */
6331                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6332                                             &data_size,
6333                                             i40e_aqc_opc_list_func_capabilities,
6334                                             NULL);
6335                 /* data loaded, buffer no longer needed */
6336                 kfree(cap_buf);
6337
6338                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6339                         /* retry with a larger buffer */
6340                         buf_len = data_size;
6341                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6342                         dev_info(&pf->pdev->dev,
6343                                  "capability discovery failed, err %s aq_err %s\n",
6344                                  i40e_stat_str(&pf->hw, err),
6345                                  i40e_aq_str(&pf->hw,
6346                                              pf->hw.aq.asq_last_status));
6347                         return -ENODEV;
6348                 }
6349         } while (err);
6350
6351         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6352             (pf->hw.aq.fw_maj_ver < 2)) {
6353                 pf->hw.func_caps.num_msix_vectors++;
6354                 pf->hw.func_caps.num_msix_vectors_vf++;
6355         }
6356
6357         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6358                 dev_info(&pf->pdev->dev,
6359                          "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",
6360                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6361                          pf->hw.func_caps.num_msix_vectors,
6362                          pf->hw.func_caps.num_msix_vectors_vf,
6363                          pf->hw.func_caps.fd_filters_guaranteed,
6364                          pf->hw.func_caps.fd_filters_best_effort,
6365                          pf->hw.func_caps.num_tx_qp,
6366                          pf->hw.func_caps.num_vsis);
6367
6368 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6369                        + pf->hw.func_caps.num_vfs)
6370         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6371                 dev_info(&pf->pdev->dev,
6372                          "got num_vsis %d, setting num_vsis to %d\n",
6373                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6374                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6375         }
6376
6377         return 0;
6378 }
6379
6380 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6381
6382 /**
6383  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6384  * @pf: board private structure
6385  **/
6386 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6387 {
6388         struct i40e_vsi *vsi;
6389         int i;
6390
6391         /* quick workaround for an NVM issue that leaves a critical register
6392          * uninitialized
6393          */
6394         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6395                 static const u32 hkey[] = {
6396                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6397                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6398                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6399                         0x95b3a76d};
6400
6401                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6402                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6403         }
6404
6405         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6406                 return;
6407
6408         /* find existing VSI and see if it needs configuring */
6409         vsi = NULL;
6410         for (i = 0; i < pf->num_alloc_vsi; i++) {
6411                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6412                         vsi = pf->vsi[i];
6413                         break;
6414                 }
6415         }
6416
6417         /* create a new VSI if none exists */
6418         if (!vsi) {
6419                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6420                                      pf->vsi[pf->lan_vsi]->seid, 0);
6421                 if (!vsi) {
6422                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6423                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6424                         return;
6425                 }
6426         }
6427
6428         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6429 }
6430
6431 /**
6432  * i40e_fdir_teardown - release the Flow Director resources
6433  * @pf: board private structure
6434  **/
6435 static void i40e_fdir_teardown(struct i40e_pf *pf)
6436 {
6437         int i;
6438
6439         i40e_fdir_filter_exit(pf);
6440         for (i = 0; i < pf->num_alloc_vsi; i++) {
6441                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6442                         i40e_vsi_release(pf->vsi[i]);
6443                         break;
6444                 }
6445         }
6446 }
6447
6448 /**
6449  * i40e_prep_for_reset - prep for the core to reset
6450  * @pf: board private structure
6451  *
6452  * Close up the VFs and other things in prep for PF Reset.
6453   **/
6454 static void i40e_prep_for_reset(struct i40e_pf *pf)
6455 {
6456         struct i40e_hw *hw = &pf->hw;
6457         i40e_status ret = 0;
6458         u32 v;
6459
6460         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6461         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6462                 return;
6463
6464         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6465
6466         /* quiesce the VSIs and their queues that are not already DOWN */
6467         i40e_pf_quiesce_all_vsi(pf);
6468
6469         for (v = 0; v < pf->num_alloc_vsi; v++) {
6470                 if (pf->vsi[v])
6471                         pf->vsi[v]->seid = 0;
6472         }
6473
6474         i40e_shutdown_adminq(&pf->hw);
6475
6476         /* call shutdown HMC */
6477         if (hw->hmc.hmc_obj) {
6478                 ret = i40e_shutdown_lan_hmc(hw);
6479                 if (ret)
6480                         dev_warn(&pf->pdev->dev,
6481                                  "shutdown_lan_hmc failed: %d\n", ret);
6482         }
6483 }
6484
6485 /**
6486  * i40e_send_version - update firmware with driver version
6487  * @pf: PF struct
6488  */
6489 static void i40e_send_version(struct i40e_pf *pf)
6490 {
6491         struct i40e_driver_version dv;
6492
6493         dv.major_version = DRV_VERSION_MAJOR;
6494         dv.minor_version = DRV_VERSION_MINOR;
6495         dv.build_version = DRV_VERSION_BUILD;
6496         dv.subbuild_version = 0;
6497         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6498         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6499 }
6500
6501 /**
6502  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6503  * @pf: board private structure
6504  * @reinit: if the Main VSI needs to re-initialized.
6505  **/
6506 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6507 {
6508         struct i40e_hw *hw = &pf->hw;
6509         u8 set_fc_aq_fail = 0;
6510         i40e_status ret;
6511         u32 v;
6512
6513         /* Now we wait for GRST to settle out.
6514          * We don't have to delete the VEBs or VSIs from the hw switch
6515          * because the reset will make them disappear.
6516          */
6517         ret = i40e_pf_reset(hw);
6518         if (ret) {
6519                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6520                 set_bit(__I40E_RESET_FAILED, &pf->state);
6521                 goto clear_recovery;
6522         }
6523         pf->pfr_count++;
6524
6525         if (test_bit(__I40E_DOWN, &pf->state))
6526                 goto clear_recovery;
6527         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6528
6529         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6530         ret = i40e_init_adminq(&pf->hw);
6531         if (ret) {
6532                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6533                          i40e_stat_str(&pf->hw, ret),
6534                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6535                 goto clear_recovery;
6536         }
6537
6538         /* re-verify the eeprom if we just had an EMP reset */
6539         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6540                 i40e_verify_eeprom(pf);
6541
6542         i40e_clear_pxe_mode(hw);
6543         ret = i40e_get_capabilities(pf);
6544         if (ret)
6545                 goto end_core_reset;
6546
6547         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6548                                 hw->func_caps.num_rx_qp,
6549                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6550         if (ret) {
6551                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6552                 goto end_core_reset;
6553         }
6554         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6555         if (ret) {
6556                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6557                 goto end_core_reset;
6558         }
6559
6560 #ifdef CONFIG_I40E_DCB
6561         ret = i40e_init_pf_dcb(pf);
6562         if (ret) {
6563                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6564                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6565                 /* Continue without DCB enabled */
6566         }
6567 #endif /* CONFIG_I40E_DCB */
6568 #ifdef I40E_FCOE
6569         i40e_init_pf_fcoe(pf);
6570
6571 #endif
6572         /* do basic switch setup */
6573         ret = i40e_setup_pf_switch(pf, reinit);
6574         if (ret)
6575                 goto end_core_reset;
6576
6577         /* driver is only interested in link up/down and module qualification
6578          * reports from firmware
6579          */
6580         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6581                                        I40E_AQ_EVENT_LINK_UPDOWN |
6582                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6583         if (ret)
6584                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6585                          i40e_stat_str(&pf->hw, ret),
6586                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6587
6588         /* make sure our flow control settings are restored */
6589         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6590         if (ret)
6591                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6592                          i40e_stat_str(&pf->hw, ret),
6593                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6594
6595         /* Rebuild the VSIs and VEBs that existed before reset.
6596          * They are still in our local switch element arrays, so only
6597          * need to rebuild the switch model in the HW.
6598          *
6599          * If there were VEBs but the reconstitution failed, we'll try
6600          * try to recover minimal use by getting the basic PF VSI working.
6601          */
6602         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6603                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6604                 /* find the one VEB connected to the MAC, and find orphans */
6605                 for (v = 0; v < I40E_MAX_VEB; v++) {
6606                         if (!pf->veb[v])
6607                                 continue;
6608
6609                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6610                             pf->veb[v]->uplink_seid == 0) {
6611                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6612
6613                                 if (!ret)
6614                                         continue;
6615
6616                                 /* If Main VEB failed, we're in deep doodoo,
6617                                  * so give up rebuilding the switch and set up
6618                                  * for minimal rebuild of PF VSI.
6619                                  * If orphan failed, we'll report the error
6620                                  * but try to keep going.
6621                                  */
6622                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6623                                         dev_info(&pf->pdev->dev,
6624                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6625                                                  ret);
6626                                         pf->vsi[pf->lan_vsi]->uplink_seid
6627                                                                 = pf->mac_seid;
6628                                         break;
6629                                 } else if (pf->veb[v]->uplink_seid == 0) {
6630                                         dev_info(&pf->pdev->dev,
6631                                                  "rebuild of orphan VEB failed: %d\n",
6632                                                  ret);
6633                                 }
6634                         }
6635                 }
6636         }
6637
6638         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6639                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6640                 /* no VEB, so rebuild only the Main VSI */
6641                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6642                 if (ret) {
6643                         dev_info(&pf->pdev->dev,
6644                                  "rebuild of Main VSI failed: %d\n", ret);
6645                         goto end_core_reset;
6646                 }
6647         }
6648
6649         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6650             (pf->hw.aq.fw_maj_ver < 4)) {
6651                 msleep(75);
6652                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6653                 if (ret)
6654                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6655                                  i40e_stat_str(&pf->hw, ret),
6656                                  i40e_aq_str(&pf->hw,
6657                                              pf->hw.aq.asq_last_status));
6658         }
6659         /* reinit the misc interrupt */
6660         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6661                 ret = i40e_setup_misc_vector(pf);
6662
6663         /* restart the VSIs that were rebuilt and running before the reset */
6664         i40e_pf_unquiesce_all_vsi(pf);
6665
6666         if (pf->num_alloc_vfs) {
6667                 for (v = 0; v < pf->num_alloc_vfs; v++)
6668                         i40e_reset_vf(&pf->vf[v], true);
6669         }
6670
6671         /* tell the firmware that we're starting */
6672         i40e_send_version(pf);
6673
6674 end_core_reset:
6675         clear_bit(__I40E_RESET_FAILED, &pf->state);
6676 clear_recovery:
6677         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6678 }
6679
6680 /**
6681  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6682  * @pf: board private structure
6683  *
6684  * Close up the VFs and other things in prep for a Core Reset,
6685  * then get ready to rebuild the world.
6686  **/
6687 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6688 {
6689         i40e_prep_for_reset(pf);
6690         i40e_reset_and_rebuild(pf, false);
6691 }
6692
6693 /**
6694  * i40e_handle_mdd_event
6695  * @pf: pointer to the PF structure
6696  *
6697  * Called from the MDD irq handler to identify possibly malicious vfs
6698  **/
6699 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6700 {
6701         struct i40e_hw *hw = &pf->hw;
6702         bool mdd_detected = false;
6703         bool pf_mdd_detected = false;
6704         struct i40e_vf *vf;
6705         u32 reg;
6706         int i;
6707
6708         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6709                 return;
6710
6711         /* find what triggered the MDD event */
6712         reg = rd32(hw, I40E_GL_MDET_TX);
6713         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6714                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6715                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6716                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6717                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6718                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6719                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6720                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6721                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6722                                 pf->hw.func_caps.base_queue;
6723                 if (netif_msg_tx_err(pf))
6724                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6725                                  event, queue, pf_num, vf_num);
6726                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6727                 mdd_detected = true;
6728         }
6729         reg = rd32(hw, I40E_GL_MDET_RX);
6730         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6731                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6732                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6733                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6734                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6735                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6736                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6737                                 pf->hw.func_caps.base_queue;
6738                 if (netif_msg_rx_err(pf))
6739                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6740                                  event, queue, func);
6741                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6742                 mdd_detected = true;
6743         }
6744
6745         if (mdd_detected) {
6746                 reg = rd32(hw, I40E_PF_MDET_TX);
6747                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6748                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6749                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6750                         pf_mdd_detected = true;
6751                 }
6752                 reg = rd32(hw, I40E_PF_MDET_RX);
6753                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6754                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6755                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6756                         pf_mdd_detected = true;
6757                 }
6758                 /* Queue belongs to the PF, initiate a reset */
6759                 if (pf_mdd_detected) {
6760                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6761                         i40e_service_event_schedule(pf);
6762                 }
6763         }
6764
6765         /* see if one of the VFs needs its hand slapped */
6766         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6767                 vf = &(pf->vf[i]);
6768                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6769                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6770                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6771                         vf->num_mdd_events++;
6772                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6773                                  i);
6774                 }
6775
6776                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6777                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6778                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6779                         vf->num_mdd_events++;
6780                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6781                                  i);
6782                 }
6783
6784                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6785                         dev_info(&pf->pdev->dev,
6786                                  "Too many MDD events on VF %d, disabled\n", i);
6787                         dev_info(&pf->pdev->dev,
6788                                  "Use PF Control I/F to re-enable the VF\n");
6789                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6790                 }
6791         }
6792
6793         /* re-enable mdd interrupt cause */
6794         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6795         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6796         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6797         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6798         i40e_flush(hw);
6799 }
6800
6801 #ifdef CONFIG_I40E_VXLAN
6802 /**
6803  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6804  * @pf: board private structure
6805  **/
6806 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6807 {
6808         struct i40e_hw *hw = &pf->hw;
6809         i40e_status ret;
6810         __be16 port;
6811         int i;
6812
6813         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6814                 return;
6815
6816         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6817
6818         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6819                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6820                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6821                         port = pf->vxlan_ports[i];
6822                         if (port)
6823                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6824                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6825                                                      NULL, NULL);
6826                         else
6827                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6828
6829                         if (ret) {
6830                                 dev_info(&pf->pdev->dev,
6831                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6832                                          port ? "add" : "delete",
6833                                          ntohs(port), i,
6834                                          i40e_stat_str(&pf->hw, ret),
6835                                          i40e_aq_str(&pf->hw,
6836                                                     pf->hw.aq.asq_last_status));
6837                                 pf->vxlan_ports[i] = 0;
6838                         }
6839                 }
6840         }
6841 }
6842
6843 #endif
6844 /**
6845  * i40e_service_task - Run the driver's async subtasks
6846  * @work: pointer to work_struct containing our data
6847  **/
6848 static void i40e_service_task(struct work_struct *work)
6849 {
6850         struct i40e_pf *pf = container_of(work,
6851                                           struct i40e_pf,
6852                                           service_task);
6853         unsigned long start_time = jiffies;
6854
6855         /* don't bother with service tasks if a reset is in progress */
6856         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6857                 i40e_service_event_complete(pf);
6858                 return;
6859         }
6860
6861         i40e_detect_recover_hung(pf);
6862         i40e_reset_subtask(pf);
6863         i40e_handle_mdd_event(pf);
6864         i40e_vc_process_vflr_event(pf);
6865         i40e_watchdog_subtask(pf);
6866         i40e_fdir_reinit_subtask(pf);
6867         i40e_sync_filters_subtask(pf);
6868 #ifdef CONFIG_I40E_VXLAN
6869         i40e_sync_vxlan_filters_subtask(pf);
6870 #endif
6871         i40e_clean_adminq_subtask(pf);
6872
6873         i40e_service_event_complete(pf);
6874
6875         /* If the tasks have taken longer than one timer cycle or there
6876          * is more work to be done, reschedule the service task now
6877          * rather than wait for the timer to tick again.
6878          */
6879         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6880             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6881             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6882             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6883                 i40e_service_event_schedule(pf);
6884 }
6885
6886 /**
6887  * i40e_service_timer - timer callback
6888  * @data: pointer to PF struct
6889  **/
6890 static void i40e_service_timer(unsigned long data)
6891 {
6892         struct i40e_pf *pf = (struct i40e_pf *)data;
6893
6894         mod_timer(&pf->service_timer,
6895                   round_jiffies(jiffies + pf->service_timer_period));
6896         i40e_service_event_schedule(pf);
6897 }
6898
6899 /**
6900  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6901  * @vsi: the VSI being configured
6902  **/
6903 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6904 {
6905         struct i40e_pf *pf = vsi->back;
6906
6907         switch (vsi->type) {
6908         case I40E_VSI_MAIN:
6909                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6910                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6911                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6912                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6913                         vsi->num_q_vectors = pf->num_lan_msix;
6914                 else
6915                         vsi->num_q_vectors = 1;
6916
6917                 break;
6918
6919         case I40E_VSI_FDIR:
6920                 vsi->alloc_queue_pairs = 1;
6921                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6922                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6923                 vsi->num_q_vectors = 1;
6924                 break;
6925
6926         case I40E_VSI_VMDQ2:
6927                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6928                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6929                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6930                 vsi->num_q_vectors = pf->num_vmdq_msix;
6931                 break;
6932
6933         case I40E_VSI_SRIOV:
6934                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6935                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6936                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6937                 break;
6938
6939 #ifdef I40E_FCOE
6940         case I40E_VSI_FCOE:
6941                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6942                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6943                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6944                 vsi->num_q_vectors = pf->num_fcoe_msix;
6945                 break;
6946
6947 #endif /* I40E_FCOE */
6948         default:
6949                 WARN_ON(1);
6950                 return -ENODATA;
6951         }
6952
6953         return 0;
6954 }
6955
6956 /**
6957  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6958  * @type: VSI pointer
6959  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6960  *
6961  * On error: returns error code (negative)
6962  * On success: returns 0
6963  **/
6964 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6965 {
6966         int size;
6967         int ret = 0;
6968
6969         /* allocate memory for both Tx and Rx ring pointers */
6970         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6971         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6972         if (!vsi->tx_rings)
6973                 return -ENOMEM;
6974         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6975
6976         if (alloc_qvectors) {
6977                 /* allocate memory for q_vector pointers */
6978                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6979                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6980                 if (!vsi->q_vectors) {
6981                         ret = -ENOMEM;
6982                         goto err_vectors;
6983                 }
6984         }
6985         return ret;
6986
6987 err_vectors:
6988         kfree(vsi->tx_rings);
6989         return ret;
6990 }
6991
6992 /**
6993  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6994  * @pf: board private structure
6995  * @type: type of VSI
6996  *
6997  * On error: returns error code (negative)
6998  * On success: returns vsi index in PF (positive)
6999  **/
7000 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7001 {
7002         int ret = -ENODEV;
7003         struct i40e_vsi *vsi;
7004         int vsi_idx;
7005         int i;
7006
7007         /* Need to protect the allocation of the VSIs at the PF level */
7008         mutex_lock(&pf->switch_mutex);
7009
7010         /* VSI list may be fragmented if VSI creation/destruction has
7011          * been happening.  We can afford to do a quick scan to look
7012          * for any free VSIs in the list.
7013          *
7014          * find next empty vsi slot, looping back around if necessary
7015          */
7016         i = pf->next_vsi;
7017         while (i < pf->num_alloc_vsi && pf->vsi[i])
7018                 i++;
7019         if (i >= pf->num_alloc_vsi) {
7020                 i = 0;
7021                 while (i < pf->next_vsi && pf->vsi[i])
7022                         i++;
7023         }
7024
7025         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7026                 vsi_idx = i;             /* Found one! */
7027         } else {
7028                 ret = -ENODEV;
7029                 goto unlock_pf;  /* out of VSI slots! */
7030         }
7031         pf->next_vsi = ++i;
7032
7033         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7034         if (!vsi) {
7035                 ret = -ENOMEM;
7036                 goto unlock_pf;
7037         }
7038         vsi->type = type;
7039         vsi->back = pf;
7040         set_bit(__I40E_DOWN, &vsi->state);
7041         vsi->flags = 0;
7042         vsi->idx = vsi_idx;
7043         vsi->rx_itr_setting = pf->rx_itr_default;
7044         vsi->tx_itr_setting = pf->tx_itr_default;
7045         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7046                                 pf->rss_table_size : 64;
7047         vsi->netdev_registered = false;
7048         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7049         INIT_LIST_HEAD(&vsi->mac_filter_list);
7050         vsi->irqs_ready = false;
7051
7052         ret = i40e_set_num_rings_in_vsi(vsi);
7053         if (ret)
7054                 goto err_rings;
7055
7056         ret = i40e_vsi_alloc_arrays(vsi, true);
7057         if (ret)
7058                 goto err_rings;
7059
7060         /* Setup default MSIX irq handler for VSI */
7061         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7062
7063         pf->vsi[vsi_idx] = vsi;
7064         ret = vsi_idx;
7065         goto unlock_pf;
7066
7067 err_rings:
7068         pf->next_vsi = i - 1;
7069         kfree(vsi);
7070 unlock_pf:
7071         mutex_unlock(&pf->switch_mutex);
7072         return ret;
7073 }
7074
7075 /**
7076  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7077  * @type: VSI pointer
7078  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7079  *
7080  * On error: returns error code (negative)
7081  * On success: returns 0
7082  **/
7083 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7084 {
7085         /* free the ring and vector containers */
7086         if (free_qvectors) {
7087                 kfree(vsi->q_vectors);
7088                 vsi->q_vectors = NULL;
7089         }
7090         kfree(vsi->tx_rings);
7091         vsi->tx_rings = NULL;
7092         vsi->rx_rings = NULL;
7093 }
7094
7095 /**
7096  * i40e_vsi_clear - Deallocate the VSI provided
7097  * @vsi: the VSI being un-configured
7098  **/
7099 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7100 {
7101         struct i40e_pf *pf;
7102
7103         if (!vsi)
7104                 return 0;
7105
7106         if (!vsi->back)
7107                 goto free_vsi;
7108         pf = vsi->back;
7109
7110         mutex_lock(&pf->switch_mutex);
7111         if (!pf->vsi[vsi->idx]) {
7112                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7113                         vsi->idx, vsi->idx, vsi, vsi->type);
7114                 goto unlock_vsi;
7115         }
7116
7117         if (pf->vsi[vsi->idx] != vsi) {
7118                 dev_err(&pf->pdev->dev,
7119                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7120                         pf->vsi[vsi->idx]->idx,
7121                         pf->vsi[vsi->idx],
7122                         pf->vsi[vsi->idx]->type,
7123                         vsi->idx, vsi, vsi->type);
7124                 goto unlock_vsi;
7125         }
7126
7127         /* updates the PF for this cleared vsi */
7128         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7129         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7130
7131         i40e_vsi_free_arrays(vsi, true);
7132
7133         pf->vsi[vsi->idx] = NULL;
7134         if (vsi->idx < pf->next_vsi)
7135                 pf->next_vsi = vsi->idx;
7136
7137 unlock_vsi:
7138         mutex_unlock(&pf->switch_mutex);
7139 free_vsi:
7140         kfree(vsi);
7141
7142         return 0;
7143 }
7144
7145 /**
7146  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7147  * @vsi: the VSI being cleaned
7148  **/
7149 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7150 {
7151         int i;
7152
7153         if (vsi->tx_rings && vsi->tx_rings[0]) {
7154                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7155                         kfree_rcu(vsi->tx_rings[i], rcu);
7156                         vsi->tx_rings[i] = NULL;
7157                         vsi->rx_rings[i] = NULL;
7158                 }
7159         }
7160 }
7161
7162 /**
7163  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7164  * @vsi: the VSI being configured
7165  **/
7166 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7167 {
7168         struct i40e_ring *tx_ring, *rx_ring;
7169         struct i40e_pf *pf = vsi->back;
7170         int i;
7171
7172         /* Set basic values in the rings to be used later during open() */
7173         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7174                 /* allocate space for both Tx and Rx in one shot */
7175                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7176                 if (!tx_ring)
7177                         goto err_out;
7178
7179                 tx_ring->queue_index = i;
7180                 tx_ring->reg_idx = vsi->base_queue + i;
7181                 tx_ring->ring_active = false;
7182                 tx_ring->vsi = vsi;
7183                 tx_ring->netdev = vsi->netdev;
7184                 tx_ring->dev = &pf->pdev->dev;
7185                 tx_ring->count = vsi->num_desc;
7186                 tx_ring->size = 0;
7187                 tx_ring->dcb_tc = 0;
7188                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7189                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7190                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7191                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7192                 vsi->tx_rings[i] = tx_ring;
7193
7194                 rx_ring = &tx_ring[1];
7195                 rx_ring->queue_index = i;
7196                 rx_ring->reg_idx = vsi->base_queue + i;
7197                 rx_ring->ring_active = false;
7198                 rx_ring->vsi = vsi;
7199                 rx_ring->netdev = vsi->netdev;
7200                 rx_ring->dev = &pf->pdev->dev;
7201                 rx_ring->count = vsi->num_desc;
7202                 rx_ring->size = 0;
7203                 rx_ring->dcb_tc = 0;
7204                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7205                         set_ring_16byte_desc_enabled(rx_ring);
7206                 else
7207                         clear_ring_16byte_desc_enabled(rx_ring);
7208                 vsi->rx_rings[i] = rx_ring;
7209         }
7210
7211         return 0;
7212
7213 err_out:
7214         i40e_vsi_clear_rings(vsi);
7215         return -ENOMEM;
7216 }
7217
7218 /**
7219  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7220  * @pf: board private structure
7221  * @vectors: the number of MSI-X vectors to request
7222  *
7223  * Returns the number of vectors reserved, or error
7224  **/
7225 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7226 {
7227         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7228                                         I40E_MIN_MSIX, vectors);
7229         if (vectors < 0) {
7230                 dev_info(&pf->pdev->dev,
7231                          "MSI-X vector reservation failed: %d\n", vectors);
7232                 vectors = 0;
7233         }
7234
7235         return vectors;
7236 }
7237
7238 /**
7239  * i40e_init_msix - Setup the MSIX capability
7240  * @pf: board private structure
7241  *
7242  * Work with the OS to set up the MSIX vectors needed.
7243  *
7244  * Returns the number of vectors reserved or negative on failure
7245  **/
7246 static int i40e_init_msix(struct i40e_pf *pf)
7247 {
7248         struct i40e_hw *hw = &pf->hw;
7249         int vectors_left;
7250         int v_budget, i;
7251         int v_actual;
7252
7253         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7254                 return -ENODEV;
7255
7256         /* The number of vectors we'll request will be comprised of:
7257          *   - Add 1 for "other" cause for Admin Queue events, etc.
7258          *   - The number of LAN queue pairs
7259          *      - Queues being used for RSS.
7260          *              We don't need as many as max_rss_size vectors.
7261          *              use rss_size instead in the calculation since that
7262          *              is governed by number of cpus in the system.
7263          *      - assumes symmetric Tx/Rx pairing
7264          *   - The number of VMDq pairs
7265 #ifdef I40E_FCOE
7266          *   - The number of FCOE qps.
7267 #endif
7268          * Once we count this up, try the request.
7269          *
7270          * If we can't get what we want, we'll simplify to nearly nothing
7271          * and try again.  If that still fails, we punt.
7272          */
7273         vectors_left = hw->func_caps.num_msix_vectors;
7274         v_budget = 0;
7275
7276         /* reserve one vector for miscellaneous handler */
7277         if (vectors_left) {
7278                 v_budget++;
7279                 vectors_left--;
7280         }
7281
7282         /* reserve vectors for the main PF traffic queues */
7283         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7284         vectors_left -= pf->num_lan_msix;
7285         v_budget += pf->num_lan_msix;
7286
7287         /* reserve one vector for sideband flow director */
7288         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7289                 if (vectors_left) {
7290                         v_budget++;
7291                         vectors_left--;
7292                 } else {
7293                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7294                 }
7295         }
7296
7297 #ifdef I40E_FCOE
7298         /* can we reserve enough for FCoE? */
7299         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7300                 if (!vectors_left)
7301                         pf->num_fcoe_msix = 0;
7302                 else if (vectors_left >= pf->num_fcoe_qps)
7303                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7304                 else
7305                         pf->num_fcoe_msix = 1;
7306                 v_budget += pf->num_fcoe_msix;
7307                 vectors_left -= pf->num_fcoe_msix;
7308         }
7309
7310 #endif
7311         /* any vectors left over go for VMDq support */
7312         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7313                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7314                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7315
7316                 /* if we're short on vectors for what's desired, we limit
7317                  * the queues per vmdq.  If this is still more than are
7318                  * available, the user will need to change the number of
7319                  * queues/vectors used by the PF later with the ethtool
7320                  * channels command
7321                  */
7322                 if (vmdq_vecs < vmdq_vecs_wanted)
7323                         pf->num_vmdq_qps = 1;
7324                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7325
7326                 v_budget += vmdq_vecs;
7327                 vectors_left -= vmdq_vecs;
7328         }
7329
7330         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7331                                    GFP_KERNEL);
7332         if (!pf->msix_entries)
7333                 return -ENOMEM;
7334
7335         for (i = 0; i < v_budget; i++)
7336                 pf->msix_entries[i].entry = i;
7337         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7338
7339         if (v_actual != v_budget) {
7340                 /* If we have limited resources, we will start with no vectors
7341                  * for the special features and then allocate vectors to some
7342                  * of these features based on the policy and at the end disable
7343                  * the features that did not get any vectors.
7344                  */
7345 #ifdef I40E_FCOE
7346                 pf->num_fcoe_qps = 0;
7347                 pf->num_fcoe_msix = 0;
7348 #endif
7349                 pf->num_vmdq_msix = 0;
7350         }
7351
7352         if (v_actual < I40E_MIN_MSIX) {
7353                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7354                 kfree(pf->msix_entries);
7355                 pf->msix_entries = NULL;
7356                 return -ENODEV;
7357
7358         } else if (v_actual == I40E_MIN_MSIX) {
7359                 /* Adjust for minimal MSIX use */
7360                 pf->num_vmdq_vsis = 0;
7361                 pf->num_vmdq_qps = 0;
7362                 pf->num_lan_qps = 1;
7363                 pf->num_lan_msix = 1;
7364
7365         } else if (v_actual != v_budget) {
7366                 int vec;
7367
7368                 /* reserve the misc vector */
7369                 vec = v_actual - 1;
7370
7371                 /* Scale vector usage down */
7372                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7373                 pf->num_vmdq_vsis = 1;
7374                 pf->num_vmdq_qps = 1;
7375                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7376
7377                 /* partition out the remaining vectors */
7378                 switch (vec) {
7379                 case 2:
7380                         pf->num_lan_msix = 1;
7381                         break;
7382                 case 3:
7383 #ifdef I40E_FCOE
7384                         /* give one vector to FCoE */
7385                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7386                                 pf->num_lan_msix = 1;
7387                                 pf->num_fcoe_msix = 1;
7388                         }
7389 #else
7390                         pf->num_lan_msix = 2;
7391 #endif
7392                         break;
7393                 default:
7394 #ifdef I40E_FCOE
7395                         /* give one vector to FCoE */
7396                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7397                                 pf->num_fcoe_msix = 1;
7398                                 vec--;
7399                         }
7400 #endif
7401                         /* give the rest to the PF */
7402                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7403                         break;
7404                 }
7405         }
7406
7407         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7408             (pf->num_vmdq_msix == 0)) {
7409                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7410                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7411         }
7412 #ifdef I40E_FCOE
7413
7414         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7415                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7416                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7417         }
7418 #endif
7419         return v_actual;
7420 }
7421
7422 /**
7423  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7424  * @vsi: the VSI being configured
7425  * @v_idx: index of the vector in the vsi struct
7426  *
7427  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7428  **/
7429 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7430 {
7431         struct i40e_q_vector *q_vector;
7432
7433         /* allocate q_vector */
7434         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7435         if (!q_vector)
7436                 return -ENOMEM;
7437
7438         q_vector->vsi = vsi;
7439         q_vector->v_idx = v_idx;
7440         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7441         if (vsi->netdev)
7442                 netif_napi_add(vsi->netdev, &q_vector->napi,
7443                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7444
7445         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7446         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7447
7448         /* tie q_vector and vsi together */
7449         vsi->q_vectors[v_idx] = q_vector;
7450
7451         return 0;
7452 }
7453
7454 /**
7455  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7456  * @vsi: the VSI being configured
7457  *
7458  * We allocate one q_vector per queue interrupt.  If allocation fails we
7459  * return -ENOMEM.
7460  **/
7461 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7462 {
7463         struct i40e_pf *pf = vsi->back;
7464         int v_idx, num_q_vectors;
7465         int err;
7466
7467         /* if not MSIX, give the one vector only to the LAN VSI */
7468         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7469                 num_q_vectors = vsi->num_q_vectors;
7470         else if (vsi == pf->vsi[pf->lan_vsi])
7471                 num_q_vectors = 1;
7472         else
7473                 return -EINVAL;
7474
7475         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7476                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7477                 if (err)
7478                         goto err_out;
7479         }
7480
7481         return 0;
7482
7483 err_out:
7484         while (v_idx--)
7485                 i40e_free_q_vector(vsi, v_idx);
7486
7487         return err;
7488 }
7489
7490 /**
7491  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7492  * @pf: board private structure to initialize
7493  **/
7494 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7495 {
7496         int vectors = 0;
7497         ssize_t size;
7498
7499         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7500                 vectors = i40e_init_msix(pf);
7501                 if (vectors < 0) {
7502                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7503 #ifdef I40E_FCOE
7504                                        I40E_FLAG_FCOE_ENABLED   |
7505 #endif
7506                                        I40E_FLAG_RSS_ENABLED    |
7507                                        I40E_FLAG_DCB_CAPABLE    |
7508                                        I40E_FLAG_SRIOV_ENABLED  |
7509                                        I40E_FLAG_FD_SB_ENABLED  |
7510                                        I40E_FLAG_FD_ATR_ENABLED |
7511                                        I40E_FLAG_VMDQ_ENABLED);
7512
7513                         /* rework the queue expectations without MSIX */
7514                         i40e_determine_queue_usage(pf);
7515                 }
7516         }
7517
7518         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7519             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7520                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7521                 vectors = pci_enable_msi(pf->pdev);
7522                 if (vectors < 0) {
7523                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7524                                  vectors);
7525                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7526                 }
7527                 vectors = 1;  /* one MSI or Legacy vector */
7528         }
7529
7530         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7531                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7532
7533         /* set up vector assignment tracking */
7534         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7535         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7536         if (!pf->irq_pile) {
7537                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7538                 return -ENOMEM;
7539         }
7540         pf->irq_pile->num_entries = vectors;
7541         pf->irq_pile->search_hint = 0;
7542
7543         /* track first vector for misc interrupts, ignore return */
7544         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7545
7546         return 0;
7547 }
7548
7549 /**
7550  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7551  * @pf: board private structure
7552  *
7553  * This sets up the handler for MSIX 0, which is used to manage the
7554  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7555  * when in MSI or Legacy interrupt mode.
7556  **/
7557 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7558 {
7559         struct i40e_hw *hw = &pf->hw;
7560         int err = 0;
7561
7562         /* Only request the irq if this is the first time through, and
7563          * not when we're rebuilding after a Reset
7564          */
7565         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7566                 err = request_irq(pf->msix_entries[0].vector,
7567                                   i40e_intr, 0, pf->int_name, pf);
7568                 if (err) {
7569                         dev_info(&pf->pdev->dev,
7570                                  "request_irq for %s failed: %d\n",
7571                                  pf->int_name, err);
7572                         return -EFAULT;
7573                 }
7574         }
7575
7576         i40e_enable_misc_int_causes(pf);
7577
7578         /* associate no queues to the misc vector */
7579         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7580         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7581
7582         i40e_flush(hw);
7583
7584         i40e_irq_dynamic_enable_icr0(pf);
7585
7586         return err;
7587 }
7588
7589 /**
7590  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7591  * @vsi: vsi structure
7592  * @seed: RSS hash seed
7593  **/
7594 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7595 {
7596         struct i40e_aqc_get_set_rss_key_data rss_key;
7597         struct i40e_pf *pf = vsi->back;
7598         struct i40e_hw *hw = &pf->hw;
7599         bool pf_lut = false;
7600         u8 *rss_lut;
7601         int ret, i;
7602
7603         memset(&rss_key, 0, sizeof(rss_key));
7604         memcpy(&rss_key, seed, sizeof(rss_key));
7605
7606         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7607         if (!rss_lut)
7608                 return -ENOMEM;
7609
7610         /* Populate the LUT with max no. of queues in round robin fashion */
7611         for (i = 0; i < vsi->rss_table_size; i++)
7612                 rss_lut[i] = i % vsi->rss_size;
7613
7614         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7615         if (ret) {
7616                 dev_info(&pf->pdev->dev,
7617                          "Cannot set RSS key, err %s aq_err %s\n",
7618                          i40e_stat_str(&pf->hw, ret),
7619                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7620                 goto config_rss_aq_out;
7621         }
7622
7623         if (vsi->type == I40E_VSI_MAIN)
7624                 pf_lut = true;
7625
7626         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7627                                   vsi->rss_table_size);
7628         if (ret)
7629                 dev_info(&pf->pdev->dev,
7630                          "Cannot set RSS lut, err %s aq_err %s\n",
7631                          i40e_stat_str(&pf->hw, ret),
7632                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7633
7634 config_rss_aq_out:
7635         kfree(rss_lut);
7636         return ret;
7637 }
7638
7639 /**
7640  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7641  * @vsi: VSI structure
7642  **/
7643 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7644 {
7645         u8 seed[I40E_HKEY_ARRAY_SIZE];
7646         struct i40e_pf *pf = vsi->back;
7647
7648         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7649         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7650
7651         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7652                 return i40e_config_rss_aq(vsi, seed);
7653
7654         return 0;
7655 }
7656
7657 /**
7658  * i40e_config_rss_reg - Prepare for RSS if used
7659  * @pf: board private structure
7660  * @seed: RSS hash seed
7661  **/
7662 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7663 {
7664         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7665         struct i40e_hw *hw = &pf->hw;
7666         u32 *seed_dw = (u32 *)seed;
7667         u32 current_queue = 0;
7668         u32 lut = 0;
7669         int i, j;
7670
7671         /* Fill out hash function seed */
7672         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7673                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7674
7675         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7676                 lut = 0;
7677                 for (j = 0; j < 4; j++) {
7678                         if (current_queue == vsi->rss_size)
7679                                 current_queue = 0;
7680                         lut |= ((current_queue) << (8 * j));
7681                         current_queue++;
7682                 }
7683                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7684         }
7685         i40e_flush(hw);
7686
7687         return 0;
7688 }
7689
7690 /**
7691  * i40e_config_rss - Prepare for RSS if used
7692  * @pf: board private structure
7693  **/
7694 static int i40e_config_rss(struct i40e_pf *pf)
7695 {
7696         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7697         u8 seed[I40E_HKEY_ARRAY_SIZE];
7698         struct i40e_hw *hw = &pf->hw;
7699         u32 reg_val;
7700         u64 hena;
7701
7702         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7703
7704         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7705         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7706                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7707         hena |= i40e_pf_get_default_rss_hena(pf);
7708
7709         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7710         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7711
7712         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7713
7714         /* Determine the RSS table size based on the hardware capabilities */
7715         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7716         reg_val = (pf->rss_table_size == 512) ?
7717                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7718                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7719         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7720
7721         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7722                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7723         else
7724                 return i40e_config_rss_reg(pf, seed);
7725 }
7726
7727 /**
7728  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7729  * @pf: board private structure
7730  * @queue_count: the requested queue count for rss.
7731  *
7732  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7733  * count which may be different from the requested queue count.
7734  **/
7735 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7736 {
7737         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7738         int new_rss_size;
7739
7740         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7741                 return 0;
7742
7743         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7744
7745         if (queue_count != vsi->num_queue_pairs) {
7746                 vsi->req_queue_pairs = queue_count;
7747                 i40e_prep_for_reset(pf);
7748
7749                 pf->rss_size = new_rss_size;
7750
7751                 i40e_reset_and_rebuild(pf, true);
7752                 i40e_config_rss(pf);
7753         }
7754         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7755         return pf->rss_size;
7756 }
7757
7758 /**
7759  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7760  * @pf: board private structure
7761  **/
7762 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7763 {
7764         i40e_status status;
7765         bool min_valid, max_valid;
7766         u32 max_bw, min_bw;
7767
7768         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7769                                            &min_valid, &max_valid);
7770
7771         if (!status) {
7772                 if (min_valid)
7773                         pf->npar_min_bw = min_bw;
7774                 if (max_valid)
7775                         pf->npar_max_bw = max_bw;
7776         }
7777
7778         return status;
7779 }
7780
7781 /**
7782  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7783  * @pf: board private structure
7784  **/
7785 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7786 {
7787         struct i40e_aqc_configure_partition_bw_data bw_data;
7788         i40e_status status;
7789
7790         /* Set the valid bit for this PF */
7791         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7792         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7793         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7794
7795         /* Set the new bandwidths */
7796         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7797
7798         return status;
7799 }
7800
7801 /**
7802  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7803  * @pf: board private structure
7804  **/
7805 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7806 {
7807         /* Commit temporary BW setting to permanent NVM image */
7808         enum i40e_admin_queue_err last_aq_status;
7809         i40e_status ret;
7810         u16 nvm_word;
7811
7812         if (pf->hw.partition_id != 1) {
7813                 dev_info(&pf->pdev->dev,
7814                          "Commit BW only works on partition 1! This is partition %d",
7815                          pf->hw.partition_id);
7816                 ret = I40E_NOT_SUPPORTED;
7817                 goto bw_commit_out;
7818         }
7819
7820         /* Acquire NVM for read access */
7821         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7822         last_aq_status = pf->hw.aq.asq_last_status;
7823         if (ret) {
7824                 dev_info(&pf->pdev->dev,
7825                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7826                          i40e_stat_str(&pf->hw, ret),
7827                          i40e_aq_str(&pf->hw, last_aq_status));
7828                 goto bw_commit_out;
7829         }
7830
7831         /* Read word 0x10 of NVM - SW compatibility word 1 */
7832         ret = i40e_aq_read_nvm(&pf->hw,
7833                                I40E_SR_NVM_CONTROL_WORD,
7834                                0x10, sizeof(nvm_word), &nvm_word,
7835                                false, NULL);
7836         /* Save off last admin queue command status before releasing
7837          * the NVM
7838          */
7839         last_aq_status = pf->hw.aq.asq_last_status;
7840         i40e_release_nvm(&pf->hw);
7841         if (ret) {
7842                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7843                          i40e_stat_str(&pf->hw, ret),
7844                          i40e_aq_str(&pf->hw, last_aq_status));
7845                 goto bw_commit_out;
7846         }
7847
7848         /* Wait a bit for NVM release to complete */
7849         msleep(50);
7850
7851         /* Acquire NVM for write access */
7852         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7853         last_aq_status = pf->hw.aq.asq_last_status;
7854         if (ret) {
7855                 dev_info(&pf->pdev->dev,
7856                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7857                          i40e_stat_str(&pf->hw, ret),
7858                          i40e_aq_str(&pf->hw, last_aq_status));
7859                 goto bw_commit_out;
7860         }
7861         /* Write it back out unchanged to initiate update NVM,
7862          * which will force a write of the shadow (alt) RAM to
7863          * the NVM - thus storing the bandwidth values permanently.
7864          */
7865         ret = i40e_aq_update_nvm(&pf->hw,
7866                                  I40E_SR_NVM_CONTROL_WORD,
7867                                  0x10, sizeof(nvm_word),
7868                                  &nvm_word, true, NULL);
7869         /* Save off last admin queue command status before releasing
7870          * the NVM
7871          */
7872         last_aq_status = pf->hw.aq.asq_last_status;
7873         i40e_release_nvm(&pf->hw);
7874         if (ret)
7875                 dev_info(&pf->pdev->dev,
7876                          "BW settings NOT SAVED, err %s aq_err %s\n",
7877                          i40e_stat_str(&pf->hw, ret),
7878                          i40e_aq_str(&pf->hw, last_aq_status));
7879 bw_commit_out:
7880
7881         return ret;
7882 }
7883
7884 /**
7885  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7886  * @pf: board private structure to initialize
7887  *
7888  * i40e_sw_init initializes the Adapter private data structure.
7889  * Fields are initialized based on PCI device information and
7890  * OS network device settings (MTU size).
7891  **/
7892 static int i40e_sw_init(struct i40e_pf *pf)
7893 {
7894         int err = 0;
7895         int size;
7896
7897         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7898                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7899         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7900         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7901                 if (I40E_DEBUG_USER & debug)
7902                         pf->hw.debug_mask = debug;
7903                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7904                                                 I40E_DEFAULT_MSG_ENABLE);
7905         }
7906
7907         /* Set default capability flags */
7908         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7909                     I40E_FLAG_MSI_ENABLED     |
7910                     I40E_FLAG_MSIX_ENABLED;
7911
7912         if (iommu_present(&pci_bus_type))
7913                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7914         else
7915                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7916
7917         /* Set default ITR */
7918         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7919         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7920
7921         /* Depending on PF configurations, it is possible that the RSS
7922          * maximum might end up larger than the available queues
7923          */
7924         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7925         pf->rss_size = 1;
7926         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7927         pf->rss_size_max = min_t(int, pf->rss_size_max,
7928                                  pf->hw.func_caps.num_tx_qp);
7929         if (pf->hw.func_caps.rss) {
7930                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7931                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7932         }
7933
7934         /* MFP mode enabled */
7935         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7936                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7937                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7938                 if (i40e_get_npar_bw_setting(pf))
7939                         dev_warn(&pf->pdev->dev,
7940                                  "Could not get NPAR bw settings\n");
7941                 else
7942                         dev_info(&pf->pdev->dev,
7943                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7944                                  pf->npar_min_bw, pf->npar_max_bw);
7945         }
7946
7947         /* FW/NVM is not yet fixed in this regard */
7948         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7949             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7950                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7951                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7952                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7953                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7954                 } else {
7955                         dev_info(&pf->pdev->dev,
7956                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7957                 }
7958                 pf->fdir_pf_filter_count =
7959                                  pf->hw.func_caps.fd_filters_guaranteed;
7960                 pf->hw.fdir_shared_filter_count =
7961                                  pf->hw.func_caps.fd_filters_best_effort;
7962         }
7963
7964         if (pf->hw.func_caps.vmdq) {
7965                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7966                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7967         }
7968
7969 #ifdef I40E_FCOE
7970         i40e_init_pf_fcoe(pf);
7971
7972 #endif /* I40E_FCOE */
7973 #ifdef CONFIG_PCI_IOV
7974         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7975                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7976                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7977                 pf->num_req_vfs = min_t(int,
7978                                         pf->hw.func_caps.num_vfs,
7979                                         I40E_MAX_VF_COUNT);
7980         }
7981 #endif /* CONFIG_PCI_IOV */
7982         if (pf->hw.mac.type == I40E_MAC_X722) {
7983                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7984                              I40E_FLAG_128_QP_RSS_CAPABLE |
7985                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7986                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7987                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7988                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7989         }
7990         pf->eeprom_version = 0xDEAD;
7991         pf->lan_veb = I40E_NO_VEB;
7992         pf->lan_vsi = I40E_NO_VSI;
7993
7994         /* By default FW has this off for performance reasons */
7995         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7996
7997         /* set up queue assignment tracking */
7998         size = sizeof(struct i40e_lump_tracking)
7999                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8000         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8001         if (!pf->qp_pile) {
8002                 err = -ENOMEM;
8003                 goto sw_init_done;
8004         }
8005         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8006         pf->qp_pile->search_hint = 0;
8007
8008         pf->tx_timeout_recovery_level = 1;
8009
8010         mutex_init(&pf->switch_mutex);
8011
8012         /* If NPAR is enabled nudge the Tx scheduler */
8013         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8014                 i40e_set_npar_bw_setting(pf);
8015
8016 sw_init_done:
8017         return err;
8018 }
8019
8020 /**
8021  * i40e_set_ntuple - set the ntuple feature flag and take action
8022  * @pf: board private structure to initialize
8023  * @features: the feature set that the stack is suggesting
8024  *
8025  * returns a bool to indicate if reset needs to happen
8026  **/
8027 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8028 {
8029         bool need_reset = false;
8030
8031         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8032          * the state changed, we need to reset.
8033          */
8034         if (features & NETIF_F_NTUPLE) {
8035                 /* Enable filters and mark for reset */
8036                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8037                         need_reset = true;
8038                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8039         } else {
8040                 /* turn off filters, mark for reset and clear SW filter list */
8041                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8042                         need_reset = true;
8043                         i40e_fdir_filter_exit(pf);
8044                 }
8045                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8046                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8047                 /* reset fd counters */
8048                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8049                 pf->fdir_pf_active_filters = 0;
8050                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8051                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8052                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8053                 /* if ATR was auto disabled it can be re-enabled. */
8054                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8055                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8056                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8057         }
8058         return need_reset;
8059 }
8060
8061 /**
8062  * i40e_set_features - set the netdev feature flags
8063  * @netdev: ptr to the netdev being adjusted
8064  * @features: the feature set that the stack is suggesting
8065  **/
8066 static int i40e_set_features(struct net_device *netdev,
8067                              netdev_features_t features)
8068 {
8069         struct i40e_netdev_priv *np = netdev_priv(netdev);
8070         struct i40e_vsi *vsi = np->vsi;
8071         struct i40e_pf *pf = vsi->back;
8072         bool need_reset;
8073
8074         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8075                 i40e_vlan_stripping_enable(vsi);
8076         else
8077                 i40e_vlan_stripping_disable(vsi);
8078
8079         need_reset = i40e_set_ntuple(pf, features);
8080
8081         if (need_reset)
8082                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8083
8084         return 0;
8085 }
8086
8087 #ifdef CONFIG_I40E_VXLAN
8088 /**
8089  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8090  * @pf: board private structure
8091  * @port: The UDP port to look up
8092  *
8093  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8094  **/
8095 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8096 {
8097         u8 i;
8098
8099         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8100                 if (pf->vxlan_ports[i] == port)
8101                         return i;
8102         }
8103
8104         return i;
8105 }
8106
8107 /**
8108  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8109  * @netdev: This physical port's netdev
8110  * @sa_family: Socket Family that VXLAN is notifying us about
8111  * @port: New UDP port number that VXLAN started listening to
8112  **/
8113 static void i40e_add_vxlan_port(struct net_device *netdev,
8114                                 sa_family_t sa_family, __be16 port)
8115 {
8116         struct i40e_netdev_priv *np = netdev_priv(netdev);
8117         struct i40e_vsi *vsi = np->vsi;
8118         struct i40e_pf *pf = vsi->back;
8119         u8 next_idx;
8120         u8 idx;
8121
8122         if (sa_family == AF_INET6)
8123                 return;
8124
8125         idx = i40e_get_vxlan_port_idx(pf, port);
8126
8127         /* Check if port already exists */
8128         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8129                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8130                             ntohs(port));
8131                 return;
8132         }
8133
8134         /* Now check if there is space to add the new port */
8135         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8136
8137         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8138                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8139                             ntohs(port));
8140                 return;
8141         }
8142
8143         /* New port: add it and mark its index in the bitmap */
8144         pf->vxlan_ports[next_idx] = port;
8145         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8146         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8147 }
8148
8149 /**
8150  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8151  * @netdev: This physical port's netdev
8152  * @sa_family: Socket Family that VXLAN is notifying us about
8153  * @port: UDP port number that VXLAN stopped listening to
8154  **/
8155 static void i40e_del_vxlan_port(struct net_device *netdev,
8156                                 sa_family_t sa_family, __be16 port)
8157 {
8158         struct i40e_netdev_priv *np = netdev_priv(netdev);
8159         struct i40e_vsi *vsi = np->vsi;
8160         struct i40e_pf *pf = vsi->back;
8161         u8 idx;
8162
8163         if (sa_family == AF_INET6)
8164                 return;
8165
8166         idx = i40e_get_vxlan_port_idx(pf, port);
8167
8168         /* Check if port already exists */
8169         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8170                 /* if port exists, set it to 0 (mark for deletion)
8171                  * and make it pending
8172                  */
8173                 pf->vxlan_ports[idx] = 0;
8174                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8175                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8176         } else {
8177                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8178                             ntohs(port));
8179         }
8180 }
8181
8182 #endif
8183 static int i40e_get_phys_port_id(struct net_device *netdev,
8184                                  struct netdev_phys_item_id *ppid)
8185 {
8186         struct i40e_netdev_priv *np = netdev_priv(netdev);
8187         struct i40e_pf *pf = np->vsi->back;
8188         struct i40e_hw *hw = &pf->hw;
8189
8190         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8191                 return -EOPNOTSUPP;
8192
8193         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8194         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8195
8196         return 0;
8197 }
8198
8199 /**
8200  * i40e_ndo_fdb_add - add an entry to the hardware database
8201  * @ndm: the input from the stack
8202  * @tb: pointer to array of nladdr (unused)
8203  * @dev: the net device pointer
8204  * @addr: the MAC address entry being added
8205  * @flags: instructions from stack about fdb operation
8206  */
8207 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8208                             struct net_device *dev,
8209                             const unsigned char *addr, u16 vid,
8210                             u16 flags)
8211 {
8212         struct i40e_netdev_priv *np = netdev_priv(dev);
8213         struct i40e_pf *pf = np->vsi->back;
8214         int err = 0;
8215
8216         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8217                 return -EOPNOTSUPP;
8218
8219         if (vid) {
8220                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8221                 return -EINVAL;
8222         }
8223
8224         /* Hardware does not support aging addresses so if a
8225          * ndm_state is given only allow permanent addresses
8226          */
8227         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8228                 netdev_info(dev, "FDB only supports static addresses\n");
8229                 return -EINVAL;
8230         }
8231
8232         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8233                 err = dev_uc_add_excl(dev, addr);
8234         else if (is_multicast_ether_addr(addr))
8235                 err = dev_mc_add_excl(dev, addr);
8236         else
8237                 err = -EINVAL;
8238
8239         /* Only return duplicate errors if NLM_F_EXCL is set */
8240         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8241                 err = 0;
8242
8243         return err;
8244 }
8245
8246 /**
8247  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8248  * @dev: the netdev being configured
8249  * @nlh: RTNL message
8250  *
8251  * Inserts a new hardware bridge if not already created and
8252  * enables the bridging mode requested (VEB or VEPA). If the
8253  * hardware bridge has already been inserted and the request
8254  * is to change the mode then that requires a PF reset to
8255  * allow rebuild of the components with required hardware
8256  * bridge mode enabled.
8257  **/
8258 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8259                                    struct nlmsghdr *nlh,
8260                                    u16 flags)
8261 {
8262         struct i40e_netdev_priv *np = netdev_priv(dev);
8263         struct i40e_vsi *vsi = np->vsi;
8264         struct i40e_pf *pf = vsi->back;
8265         struct i40e_veb *veb = NULL;
8266         struct nlattr *attr, *br_spec;
8267         int i, rem;
8268
8269         /* Only for PF VSI for now */
8270         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8271                 return -EOPNOTSUPP;
8272
8273         /* Find the HW bridge for PF VSI */
8274         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8275                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8276                         veb = pf->veb[i];
8277         }
8278
8279         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8280
8281         nla_for_each_nested(attr, br_spec, rem) {
8282                 __u16 mode;
8283
8284                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8285                         continue;
8286
8287                 mode = nla_get_u16(attr);
8288                 if ((mode != BRIDGE_MODE_VEPA) &&
8289                     (mode != BRIDGE_MODE_VEB))
8290                         return -EINVAL;
8291
8292                 /* Insert a new HW bridge */
8293                 if (!veb) {
8294                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8295                                              vsi->tc_config.enabled_tc);
8296                         if (veb) {
8297                                 veb->bridge_mode = mode;
8298                                 i40e_config_bridge_mode(veb);
8299                         } else {
8300                                 /* No Bridge HW offload available */
8301                                 return -ENOENT;
8302                         }
8303                         break;
8304                 } else if (mode != veb->bridge_mode) {
8305                         /* Existing HW bridge but different mode needs reset */
8306                         veb->bridge_mode = mode;
8307                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8308                         if (mode == BRIDGE_MODE_VEB)
8309                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8310                         else
8311                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8312                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8313                         break;
8314                 }
8315         }
8316
8317         return 0;
8318 }
8319
8320 /**
8321  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8322  * @skb: skb buff
8323  * @pid: process id
8324  * @seq: RTNL message seq #
8325  * @dev: the netdev being configured
8326  * @filter_mask: unused
8327  *
8328  * Return the mode in which the hardware bridge is operating in
8329  * i.e VEB or VEPA.
8330  **/
8331 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8332                                    struct net_device *dev,
8333                                    u32 filter_mask, int nlflags)
8334 {
8335         struct i40e_netdev_priv *np = netdev_priv(dev);
8336         struct i40e_vsi *vsi = np->vsi;
8337         struct i40e_pf *pf = vsi->back;
8338         struct i40e_veb *veb = NULL;
8339         int i;
8340
8341         /* Only for PF VSI for now */
8342         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8343                 return -EOPNOTSUPP;
8344
8345         /* Find the HW bridge for the PF VSI */
8346         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8347                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8348                         veb = pf->veb[i];
8349         }
8350
8351         if (!veb)
8352                 return 0;
8353
8354         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8355                                        nlflags, 0, 0, filter_mask, NULL);
8356 }
8357
8358 #define I40E_MAX_TUNNEL_HDR_LEN 80
8359 /**
8360  * i40e_features_check - Validate encapsulated packet conforms to limits
8361  * @skb: skb buff
8362  * @netdev: This physical port's netdev
8363  * @features: Offload features that the stack believes apply
8364  **/
8365 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8366                                              struct net_device *dev,
8367                                              netdev_features_t features)
8368 {
8369         if (skb->encapsulation &&
8370             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8371              I40E_MAX_TUNNEL_HDR_LEN))
8372                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8373
8374         return features;
8375 }
8376
8377 static const struct net_device_ops i40e_netdev_ops = {
8378         .ndo_open               = i40e_open,
8379         .ndo_stop               = i40e_close,
8380         .ndo_start_xmit         = i40e_lan_xmit_frame,
8381         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8382         .ndo_set_rx_mode        = i40e_set_rx_mode,
8383         .ndo_validate_addr      = eth_validate_addr,
8384         .ndo_set_mac_address    = i40e_set_mac,
8385         .ndo_change_mtu         = i40e_change_mtu,
8386         .ndo_do_ioctl           = i40e_ioctl,
8387         .ndo_tx_timeout         = i40e_tx_timeout,
8388         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8389         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8390 #ifdef CONFIG_NET_POLL_CONTROLLER
8391         .ndo_poll_controller    = i40e_netpoll,
8392 #endif
8393         .ndo_setup_tc           = i40e_setup_tc,
8394 #ifdef I40E_FCOE
8395         .ndo_fcoe_enable        = i40e_fcoe_enable,
8396         .ndo_fcoe_disable       = i40e_fcoe_disable,
8397 #endif
8398         .ndo_set_features       = i40e_set_features,
8399         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8400         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8401         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8402         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8403         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8404         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8405 #ifdef CONFIG_I40E_VXLAN
8406         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8407         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8408 #endif
8409         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8410         .ndo_fdb_add            = i40e_ndo_fdb_add,
8411         .ndo_features_check     = i40e_features_check,
8412         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8413         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8414 };
8415
8416 /**
8417  * i40e_config_netdev - Setup the netdev flags
8418  * @vsi: the VSI being configured
8419  *
8420  * Returns 0 on success, negative value on failure
8421  **/
8422 static int i40e_config_netdev(struct i40e_vsi *vsi)
8423 {
8424         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8425         struct i40e_pf *pf = vsi->back;
8426         struct i40e_hw *hw = &pf->hw;
8427         struct i40e_netdev_priv *np;
8428         struct net_device *netdev;
8429         u8 mac_addr[ETH_ALEN];
8430         int etherdev_size;
8431
8432         etherdev_size = sizeof(struct i40e_netdev_priv);
8433         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8434         if (!netdev)
8435                 return -ENOMEM;
8436
8437         vsi->netdev = netdev;
8438         np = netdev_priv(netdev);
8439         np->vsi = vsi;
8440
8441         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8442                                   NETIF_F_GSO_UDP_TUNNEL |
8443                                   NETIF_F_TSO;
8444
8445         netdev->features = NETIF_F_SG                  |
8446                            NETIF_F_IP_CSUM             |
8447                            NETIF_F_SCTP_CSUM           |
8448                            NETIF_F_HIGHDMA             |
8449                            NETIF_F_GSO_UDP_TUNNEL      |
8450                            NETIF_F_HW_VLAN_CTAG_TX     |
8451                            NETIF_F_HW_VLAN_CTAG_RX     |
8452                            NETIF_F_HW_VLAN_CTAG_FILTER |
8453                            NETIF_F_IPV6_CSUM           |
8454                            NETIF_F_TSO                 |
8455                            NETIF_F_TSO_ECN             |
8456                            NETIF_F_TSO6                |
8457                            NETIF_F_RXCSUM              |
8458                            NETIF_F_RXHASH              |
8459                            0;
8460
8461         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8462                 netdev->features |= NETIF_F_NTUPLE;
8463
8464         /* copy netdev features into list of user selectable features */
8465         netdev->hw_features |= netdev->features;
8466
8467         if (vsi->type == I40E_VSI_MAIN) {
8468                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8469                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8470                 /* The following steps are necessary to prevent reception
8471                  * of tagged packets - some older NVM configurations load a
8472                  * default a MAC-VLAN filter that accepts any tagged packet
8473                  * which must be replaced by a normal filter.
8474                  */
8475                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8476                         i40e_add_filter(vsi, mac_addr,
8477                                         I40E_VLAN_ANY, false, true);
8478         } else {
8479                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8480                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8481                          pf->vsi[pf->lan_vsi]->netdev->name);
8482                 random_ether_addr(mac_addr);
8483                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8484         }
8485         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8486
8487         ether_addr_copy(netdev->dev_addr, mac_addr);
8488         ether_addr_copy(netdev->perm_addr, mac_addr);
8489         /* vlan gets same features (except vlan offload)
8490          * after any tweaks for specific VSI types
8491          */
8492         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8493                                                      NETIF_F_HW_VLAN_CTAG_RX |
8494                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8495         netdev->priv_flags |= IFF_UNICAST_FLT;
8496         netdev->priv_flags |= IFF_SUPP_NOFCS;
8497         /* Setup netdev TC information */
8498         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8499
8500         netdev->netdev_ops = &i40e_netdev_ops;
8501         netdev->watchdog_timeo = 5 * HZ;
8502         i40e_set_ethtool_ops(netdev);
8503 #ifdef I40E_FCOE
8504         i40e_fcoe_config_netdev(netdev, vsi);
8505 #endif
8506
8507         return 0;
8508 }
8509
8510 /**
8511  * i40e_vsi_delete - Delete a VSI from the switch
8512  * @vsi: the VSI being removed
8513  *
8514  * Returns 0 on success, negative value on failure
8515  **/
8516 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8517 {
8518         /* remove default VSI is not allowed */
8519         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8520                 return;
8521
8522         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8523 }
8524
8525 /**
8526  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8527  * @vsi: the VSI being queried
8528  *
8529  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8530  **/
8531 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8532 {
8533         struct i40e_veb *veb;
8534         struct i40e_pf *pf = vsi->back;
8535
8536         /* Uplink is not a bridge so default to VEB */
8537         if (vsi->veb_idx == I40E_NO_VEB)
8538                 return 1;
8539
8540         veb = pf->veb[vsi->veb_idx];
8541         /* Uplink is a bridge in VEPA mode */
8542         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8543                 return 0;
8544
8545         /* Uplink is a bridge in VEB mode */
8546         return 1;
8547 }
8548
8549 /**
8550  * i40e_add_vsi - Add a VSI to the switch
8551  * @vsi: the VSI being configured
8552  *
8553  * This initializes a VSI context depending on the VSI type to be added and
8554  * passes it down to the add_vsi aq command.
8555  **/
8556 static int i40e_add_vsi(struct i40e_vsi *vsi)
8557 {
8558         int ret = -ENODEV;
8559         struct i40e_mac_filter *f, *ftmp;
8560         struct i40e_pf *pf = vsi->back;
8561         struct i40e_hw *hw = &pf->hw;
8562         struct i40e_vsi_context ctxt;
8563         u8 enabled_tc = 0x1; /* TC0 enabled */
8564         int f_count = 0;
8565
8566         memset(&ctxt, 0, sizeof(ctxt));
8567         switch (vsi->type) {
8568         case I40E_VSI_MAIN:
8569                 /* The PF's main VSI is already setup as part of the
8570                  * device initialization, so we'll not bother with
8571                  * the add_vsi call, but we will retrieve the current
8572                  * VSI context.
8573                  */
8574                 ctxt.seid = pf->main_vsi_seid;
8575                 ctxt.pf_num = pf->hw.pf_id;
8576                 ctxt.vf_num = 0;
8577                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8578                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8579                 if (ret) {
8580                         dev_info(&pf->pdev->dev,
8581                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8582                                  i40e_stat_str(&pf->hw, ret),
8583                                  i40e_aq_str(&pf->hw,
8584                                              pf->hw.aq.asq_last_status));
8585                         return -ENOENT;
8586                 }
8587                 vsi->info = ctxt.info;
8588                 vsi->info.valid_sections = 0;
8589
8590                 vsi->seid = ctxt.seid;
8591                 vsi->id = ctxt.vsi_number;
8592
8593                 enabled_tc = i40e_pf_get_tc_map(pf);
8594
8595                 /* MFP mode setup queue map and update VSI */
8596                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8597                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8598                         memset(&ctxt, 0, sizeof(ctxt));
8599                         ctxt.seid = pf->main_vsi_seid;
8600                         ctxt.pf_num = pf->hw.pf_id;
8601                         ctxt.vf_num = 0;
8602                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8603                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8604                         if (ret) {
8605                                 dev_info(&pf->pdev->dev,
8606                                          "update vsi failed, err %s aq_err %s\n",
8607                                          i40e_stat_str(&pf->hw, ret),
8608                                          i40e_aq_str(&pf->hw,
8609                                                     pf->hw.aq.asq_last_status));
8610                                 ret = -ENOENT;
8611                                 goto err;
8612                         }
8613                         /* update the local VSI info queue map */
8614                         i40e_vsi_update_queue_map(vsi, &ctxt);
8615                         vsi->info.valid_sections = 0;
8616                 } else {
8617                         /* Default/Main VSI is only enabled for TC0
8618                          * reconfigure it to enable all TCs that are
8619                          * available on the port in SFP mode.
8620                          * For MFP case the iSCSI PF would use this
8621                          * flow to enable LAN+iSCSI TC.
8622                          */
8623                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8624                         if (ret) {
8625                                 dev_info(&pf->pdev->dev,
8626                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8627                                          enabled_tc,
8628                                          i40e_stat_str(&pf->hw, ret),
8629                                          i40e_aq_str(&pf->hw,
8630                                                     pf->hw.aq.asq_last_status));
8631                                 ret = -ENOENT;
8632                         }
8633                 }
8634                 break;
8635
8636         case I40E_VSI_FDIR:
8637                 ctxt.pf_num = hw->pf_id;
8638                 ctxt.vf_num = 0;
8639                 ctxt.uplink_seid = vsi->uplink_seid;
8640                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8641                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8642                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8643                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8644                         ctxt.info.valid_sections |=
8645                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8646                         ctxt.info.switch_id =
8647                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8648                 }
8649                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8650                 break;
8651
8652         case I40E_VSI_VMDQ2:
8653                 ctxt.pf_num = hw->pf_id;
8654                 ctxt.vf_num = 0;
8655                 ctxt.uplink_seid = vsi->uplink_seid;
8656                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8657                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8658
8659                 /* This VSI is connected to VEB so the switch_id
8660                  * should be set to zero by default.
8661                  */
8662                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8663                         ctxt.info.valid_sections |=
8664                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8665                         ctxt.info.switch_id =
8666                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8667                 }
8668
8669                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8670                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8671                 break;
8672
8673         case I40E_VSI_SRIOV:
8674                 ctxt.pf_num = hw->pf_id;
8675                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8676                 ctxt.uplink_seid = vsi->uplink_seid;
8677                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8678                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8679
8680                 /* This VSI is connected to VEB so the switch_id
8681                  * should be set to zero by default.
8682                  */
8683                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8684                         ctxt.info.valid_sections |=
8685                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8686                         ctxt.info.switch_id =
8687                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8688                 }
8689
8690                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8691                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8692                 if (pf->vf[vsi->vf_id].spoofchk) {
8693                         ctxt.info.valid_sections |=
8694                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8695                         ctxt.info.sec_flags |=
8696                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8697                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8698                 }
8699                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8700                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8701                 break;
8702
8703 #ifdef I40E_FCOE
8704         case I40E_VSI_FCOE:
8705                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8706                 if (ret) {
8707                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8708                         return ret;
8709                 }
8710                 break;
8711
8712 #endif /* I40E_FCOE */
8713         default:
8714                 return -ENODEV;
8715         }
8716
8717         if (vsi->type != I40E_VSI_MAIN) {
8718                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8719                 if (ret) {
8720                         dev_info(&vsi->back->pdev->dev,
8721                                  "add vsi failed, err %s aq_err %s\n",
8722                                  i40e_stat_str(&pf->hw, ret),
8723                                  i40e_aq_str(&pf->hw,
8724                                              pf->hw.aq.asq_last_status));
8725                         ret = -ENOENT;
8726                         goto err;
8727                 }
8728                 vsi->info = ctxt.info;
8729                 vsi->info.valid_sections = 0;
8730                 vsi->seid = ctxt.seid;
8731                 vsi->id = ctxt.vsi_number;
8732         }
8733
8734         /* If macvlan filters already exist, force them to get loaded */
8735         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8736                 f->changed = true;
8737                 f_count++;
8738
8739                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8740                         struct i40e_aqc_remove_macvlan_element_data element;
8741
8742                         memset(&element, 0, sizeof(element));
8743                         ether_addr_copy(element.mac_addr, f->macaddr);
8744                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8745                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8746                                                      &element, 1, NULL);
8747                         if (ret) {
8748                                 /* some older FW has a different default */
8749                                 element.flags |=
8750                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8751                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8752                                                        &element, 1, NULL);
8753                         }
8754
8755                         i40e_aq_mac_address_write(hw,
8756                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8757                                                   f->macaddr, NULL);
8758                 }
8759         }
8760         if (f_count) {
8761                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8762                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8763         }
8764
8765         /* Update VSI BW information */
8766         ret = i40e_vsi_get_bw_info(vsi);
8767         if (ret) {
8768                 dev_info(&pf->pdev->dev,
8769                          "couldn't get vsi bw info, err %s aq_err %s\n",
8770                          i40e_stat_str(&pf->hw, ret),
8771                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8772                 /* VSI is already added so not tearing that up */
8773                 ret = 0;
8774         }
8775
8776 err:
8777         return ret;
8778 }
8779
8780 /**
8781  * i40e_vsi_release - Delete a VSI and free its resources
8782  * @vsi: the VSI being removed
8783  *
8784  * Returns 0 on success or < 0 on error
8785  **/
8786 int i40e_vsi_release(struct i40e_vsi *vsi)
8787 {
8788         struct i40e_mac_filter *f, *ftmp;
8789         struct i40e_veb *veb = NULL;
8790         struct i40e_pf *pf;
8791         u16 uplink_seid;
8792         int i, n;
8793
8794         pf = vsi->back;
8795
8796         /* release of a VEB-owner or last VSI is not allowed */
8797         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8798                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8799                          vsi->seid, vsi->uplink_seid);
8800                 return -ENODEV;
8801         }
8802         if (vsi == pf->vsi[pf->lan_vsi] &&
8803             !test_bit(__I40E_DOWN, &pf->state)) {
8804                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8805                 return -ENODEV;
8806         }
8807
8808         uplink_seid = vsi->uplink_seid;
8809         if (vsi->type != I40E_VSI_SRIOV) {
8810                 if (vsi->netdev_registered) {
8811                         vsi->netdev_registered = false;
8812                         if (vsi->netdev) {
8813                                 /* results in a call to i40e_close() */
8814                                 unregister_netdev(vsi->netdev);
8815                         }
8816                 } else {
8817                         i40e_vsi_close(vsi);
8818                 }
8819                 i40e_vsi_disable_irq(vsi);
8820         }
8821
8822         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8823                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8824                                 f->is_vf, f->is_netdev);
8825         i40e_sync_vsi_filters(vsi, false);
8826
8827         i40e_vsi_delete(vsi);
8828         i40e_vsi_free_q_vectors(vsi);
8829         if (vsi->netdev) {
8830                 free_netdev(vsi->netdev);
8831                 vsi->netdev = NULL;
8832         }
8833         i40e_vsi_clear_rings(vsi);
8834         i40e_vsi_clear(vsi);
8835
8836         /* If this was the last thing on the VEB, except for the
8837          * controlling VSI, remove the VEB, which puts the controlling
8838          * VSI onto the next level down in the switch.
8839          *
8840          * Well, okay, there's one more exception here: don't remove
8841          * the orphan VEBs yet.  We'll wait for an explicit remove request
8842          * from up the network stack.
8843          */
8844         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8845                 if (pf->vsi[i] &&
8846                     pf->vsi[i]->uplink_seid == uplink_seid &&
8847                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8848                         n++;      /* count the VSIs */
8849                 }
8850         }
8851         for (i = 0; i < I40E_MAX_VEB; i++) {
8852                 if (!pf->veb[i])
8853                         continue;
8854                 if (pf->veb[i]->uplink_seid == uplink_seid)
8855                         n++;     /* count the VEBs */
8856                 if (pf->veb[i]->seid == uplink_seid)
8857                         veb = pf->veb[i];
8858         }
8859         if (n == 0 && veb && veb->uplink_seid != 0)
8860                 i40e_veb_release(veb);
8861
8862         return 0;
8863 }
8864
8865 /**
8866  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8867  * @vsi: ptr to the VSI
8868  *
8869  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8870  * corresponding SW VSI structure and initializes num_queue_pairs for the
8871  * newly allocated VSI.
8872  *
8873  * Returns 0 on success or negative on failure
8874  **/
8875 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8876 {
8877         int ret = -ENOENT;
8878         struct i40e_pf *pf = vsi->back;
8879
8880         if (vsi->q_vectors[0]) {
8881                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8882                          vsi->seid);
8883                 return -EEXIST;
8884         }
8885
8886         if (vsi->base_vector) {
8887                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8888                          vsi->seid, vsi->base_vector);
8889                 return -EEXIST;
8890         }
8891
8892         ret = i40e_vsi_alloc_q_vectors(vsi);
8893         if (ret) {
8894                 dev_info(&pf->pdev->dev,
8895                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8896                          vsi->num_q_vectors, vsi->seid, ret);
8897                 vsi->num_q_vectors = 0;
8898                 goto vector_setup_out;
8899         }
8900
8901         /* In Legacy mode, we do not have to get any other vector since we
8902          * piggyback on the misc/ICR0 for queue interrupts.
8903         */
8904         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8905                 return ret;
8906         if (vsi->num_q_vectors)
8907                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8908                                                  vsi->num_q_vectors, vsi->idx);
8909         if (vsi->base_vector < 0) {
8910                 dev_info(&pf->pdev->dev,
8911                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8912                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8913                 i40e_vsi_free_q_vectors(vsi);
8914                 ret = -ENOENT;
8915                 goto vector_setup_out;
8916         }
8917
8918 vector_setup_out:
8919         return ret;
8920 }
8921
8922 /**
8923  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8924  * @vsi: pointer to the vsi.
8925  *
8926  * This re-allocates a vsi's queue resources.
8927  *
8928  * Returns pointer to the successfully allocated and configured VSI sw struct
8929  * on success, otherwise returns NULL on failure.
8930  **/
8931 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8932 {
8933         struct i40e_pf *pf = vsi->back;
8934         u8 enabled_tc;
8935         int ret;
8936
8937         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8938         i40e_vsi_clear_rings(vsi);
8939
8940         i40e_vsi_free_arrays(vsi, false);
8941         i40e_set_num_rings_in_vsi(vsi);
8942         ret = i40e_vsi_alloc_arrays(vsi, false);
8943         if (ret)
8944                 goto err_vsi;
8945
8946         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8947         if (ret < 0) {
8948                 dev_info(&pf->pdev->dev,
8949                          "failed to get tracking for %d queues for VSI %d err %d\n",
8950                          vsi->alloc_queue_pairs, vsi->seid, ret);
8951                 goto err_vsi;
8952         }
8953         vsi->base_queue = ret;
8954
8955         /* Update the FW view of the VSI. Force a reset of TC and queue
8956          * layout configurations.
8957          */
8958         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8959         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8960         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8961         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8962
8963         /* assign it some queues */
8964         ret = i40e_alloc_rings(vsi);
8965         if (ret)
8966                 goto err_rings;
8967
8968         /* map all of the rings to the q_vectors */
8969         i40e_vsi_map_rings_to_vectors(vsi);
8970         return vsi;
8971
8972 err_rings:
8973         i40e_vsi_free_q_vectors(vsi);
8974         if (vsi->netdev_registered) {
8975                 vsi->netdev_registered = false;
8976                 unregister_netdev(vsi->netdev);
8977                 free_netdev(vsi->netdev);
8978                 vsi->netdev = NULL;
8979         }
8980         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8981 err_vsi:
8982         i40e_vsi_clear(vsi);
8983         return NULL;
8984 }
8985
8986 /**
8987  * i40e_vsi_setup - Set up a VSI by a given type
8988  * @pf: board private structure
8989  * @type: VSI type
8990  * @uplink_seid: the switch element to link to
8991  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8992  *
8993  * This allocates the sw VSI structure and its queue resources, then add a VSI
8994  * to the identified VEB.
8995  *
8996  * Returns pointer to the successfully allocated and configure VSI sw struct on
8997  * success, otherwise returns NULL on failure.
8998  **/
8999 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9000                                 u16 uplink_seid, u32 param1)
9001 {
9002         struct i40e_vsi *vsi = NULL;
9003         struct i40e_veb *veb = NULL;
9004         int ret, i;
9005         int v_idx;
9006
9007         /* The requested uplink_seid must be either
9008          *     - the PF's port seid
9009          *              no VEB is needed because this is the PF
9010          *              or this is a Flow Director special case VSI
9011          *     - seid of an existing VEB
9012          *     - seid of a VSI that owns an existing VEB
9013          *     - seid of a VSI that doesn't own a VEB
9014          *              a new VEB is created and the VSI becomes the owner
9015          *     - seid of the PF VSI, which is what creates the first VEB
9016          *              this is a special case of the previous
9017          *
9018          * Find which uplink_seid we were given and create a new VEB if needed
9019          */
9020         for (i = 0; i < I40E_MAX_VEB; i++) {
9021                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9022                         veb = pf->veb[i];
9023                         break;
9024                 }
9025         }
9026
9027         if (!veb && uplink_seid != pf->mac_seid) {
9028
9029                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9030                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9031                                 vsi = pf->vsi[i];
9032                                 break;
9033                         }
9034                 }
9035                 if (!vsi) {
9036                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9037                                  uplink_seid);
9038                         return NULL;
9039                 }
9040
9041                 if (vsi->uplink_seid == pf->mac_seid)
9042                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9043                                              vsi->tc_config.enabled_tc);
9044                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9045                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9046                                              vsi->tc_config.enabled_tc);
9047                 if (veb) {
9048                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9049                                 dev_info(&vsi->back->pdev->dev,
9050                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9051                                 return NULL;
9052                         }
9053                         /* We come up by default in VEPA mode if SRIOV is not
9054                          * already enabled, in which case we can't force VEPA
9055                          * mode.
9056                          */
9057                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9058                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9059                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9060                         }
9061                         i40e_config_bridge_mode(veb);
9062                 }
9063                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9064                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9065                                 veb = pf->veb[i];
9066                 }
9067                 if (!veb) {
9068                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9069                         return NULL;
9070                 }
9071
9072                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9073                 uplink_seid = veb->seid;
9074         }
9075
9076         /* get vsi sw struct */
9077         v_idx = i40e_vsi_mem_alloc(pf, type);
9078         if (v_idx < 0)
9079                 goto err_alloc;
9080         vsi = pf->vsi[v_idx];
9081         if (!vsi)
9082                 goto err_alloc;
9083         vsi->type = type;
9084         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9085
9086         if (type == I40E_VSI_MAIN)
9087                 pf->lan_vsi = v_idx;
9088         else if (type == I40E_VSI_SRIOV)
9089                 vsi->vf_id = param1;
9090         /* assign it some queues */
9091         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9092                                 vsi->idx);
9093         if (ret < 0) {
9094                 dev_info(&pf->pdev->dev,
9095                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9096                          vsi->alloc_queue_pairs, vsi->seid, ret);
9097                 goto err_vsi;
9098         }
9099         vsi->base_queue = ret;
9100
9101         /* get a VSI from the hardware */
9102         vsi->uplink_seid = uplink_seid;
9103         ret = i40e_add_vsi(vsi);
9104         if (ret)
9105                 goto err_vsi;
9106
9107         switch (vsi->type) {
9108         /* setup the netdev if needed */
9109         case I40E_VSI_MAIN:
9110         case I40E_VSI_VMDQ2:
9111         case I40E_VSI_FCOE:
9112                 ret = i40e_config_netdev(vsi);
9113                 if (ret)
9114                         goto err_netdev;
9115                 ret = register_netdev(vsi->netdev);
9116                 if (ret)
9117                         goto err_netdev;
9118                 vsi->netdev_registered = true;
9119                 netif_carrier_off(vsi->netdev);
9120 #ifdef CONFIG_I40E_DCB
9121                 /* Setup DCB netlink interface */
9122                 i40e_dcbnl_setup(vsi);
9123 #endif /* CONFIG_I40E_DCB */
9124                 /* fall through */
9125
9126         case I40E_VSI_FDIR:
9127                 /* set up vectors and rings if needed */
9128                 ret = i40e_vsi_setup_vectors(vsi);
9129                 if (ret)
9130                         goto err_msix;
9131
9132                 ret = i40e_alloc_rings(vsi);
9133                 if (ret)
9134                         goto err_rings;
9135
9136                 /* map all of the rings to the q_vectors */
9137                 i40e_vsi_map_rings_to_vectors(vsi);
9138
9139                 i40e_vsi_reset_stats(vsi);
9140                 break;
9141
9142         default:
9143                 /* no netdev or rings for the other VSI types */
9144                 break;
9145         }
9146
9147         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9148             (vsi->type == I40E_VSI_VMDQ2)) {
9149                 ret = i40e_vsi_config_rss(vsi);
9150         }
9151         return vsi;
9152
9153 err_rings:
9154         i40e_vsi_free_q_vectors(vsi);
9155 err_msix:
9156         if (vsi->netdev_registered) {
9157                 vsi->netdev_registered = false;
9158                 unregister_netdev(vsi->netdev);
9159                 free_netdev(vsi->netdev);
9160                 vsi->netdev = NULL;
9161         }
9162 err_netdev:
9163         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9164 err_vsi:
9165         i40e_vsi_clear(vsi);
9166 err_alloc:
9167         return NULL;
9168 }
9169
9170 /**
9171  * i40e_veb_get_bw_info - Query VEB BW information
9172  * @veb: the veb to query
9173  *
9174  * Query the Tx scheduler BW configuration data for given VEB
9175  **/
9176 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9177 {
9178         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9179         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9180         struct i40e_pf *pf = veb->pf;
9181         struct i40e_hw *hw = &pf->hw;
9182         u32 tc_bw_max;
9183         int ret = 0;
9184         int i;
9185
9186         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9187                                                   &bw_data, NULL);
9188         if (ret) {
9189                 dev_info(&pf->pdev->dev,
9190                          "query veb bw config failed, err %s aq_err %s\n",
9191                          i40e_stat_str(&pf->hw, ret),
9192                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9193                 goto out;
9194         }
9195
9196         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9197                                                    &ets_data, NULL);
9198         if (ret) {
9199                 dev_info(&pf->pdev->dev,
9200                          "query veb bw ets config failed, err %s aq_err %s\n",
9201                          i40e_stat_str(&pf->hw, ret),
9202                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9203                 goto out;
9204         }
9205
9206         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9207         veb->bw_max_quanta = ets_data.tc_bw_max;
9208         veb->is_abs_credits = bw_data.absolute_credits_enable;
9209         veb->enabled_tc = ets_data.tc_valid_bits;
9210         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9211                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9212         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9213                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9214                 veb->bw_tc_limit_credits[i] =
9215                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9216                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9217         }
9218
9219 out:
9220         return ret;
9221 }
9222
9223 /**
9224  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9225  * @pf: board private structure
9226  *
9227  * On error: returns error code (negative)
9228  * On success: returns vsi index in PF (positive)
9229  **/
9230 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9231 {
9232         int ret = -ENOENT;
9233         struct i40e_veb *veb;
9234         int i;
9235
9236         /* Need to protect the allocation of switch elements at the PF level */
9237         mutex_lock(&pf->switch_mutex);
9238
9239         /* VEB list may be fragmented if VEB creation/destruction has
9240          * been happening.  We can afford to do a quick scan to look
9241          * for any free slots in the list.
9242          *
9243          * find next empty veb slot, looping back around if necessary
9244          */
9245         i = 0;
9246         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9247                 i++;
9248         if (i >= I40E_MAX_VEB) {
9249                 ret = -ENOMEM;
9250                 goto err_alloc_veb;  /* out of VEB slots! */
9251         }
9252
9253         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9254         if (!veb) {
9255                 ret = -ENOMEM;
9256                 goto err_alloc_veb;
9257         }
9258         veb->pf = pf;
9259         veb->idx = i;
9260         veb->enabled_tc = 1;
9261
9262         pf->veb[i] = veb;
9263         ret = i;
9264 err_alloc_veb:
9265         mutex_unlock(&pf->switch_mutex);
9266         return ret;
9267 }
9268
9269 /**
9270  * i40e_switch_branch_release - Delete a branch of the switch tree
9271  * @branch: where to start deleting
9272  *
9273  * This uses recursion to find the tips of the branch to be
9274  * removed, deleting until we get back to and can delete this VEB.
9275  **/
9276 static void i40e_switch_branch_release(struct i40e_veb *branch)
9277 {
9278         struct i40e_pf *pf = branch->pf;
9279         u16 branch_seid = branch->seid;
9280         u16 veb_idx = branch->idx;
9281         int i;
9282
9283         /* release any VEBs on this VEB - RECURSION */
9284         for (i = 0; i < I40E_MAX_VEB; i++) {
9285                 if (!pf->veb[i])
9286                         continue;
9287                 if (pf->veb[i]->uplink_seid == branch->seid)
9288                         i40e_switch_branch_release(pf->veb[i]);
9289         }
9290
9291         /* Release the VSIs on this VEB, but not the owner VSI.
9292          *
9293          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9294          *       the VEB itself, so don't use (*branch) after this loop.
9295          */
9296         for (i = 0; i < pf->num_alloc_vsi; i++) {
9297                 if (!pf->vsi[i])
9298                         continue;
9299                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9300                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9301                         i40e_vsi_release(pf->vsi[i]);
9302                 }
9303         }
9304
9305         /* There's one corner case where the VEB might not have been
9306          * removed, so double check it here and remove it if needed.
9307          * This case happens if the veb was created from the debugfs
9308          * commands and no VSIs were added to it.
9309          */
9310         if (pf->veb[veb_idx])
9311                 i40e_veb_release(pf->veb[veb_idx]);
9312 }
9313
9314 /**
9315  * i40e_veb_clear - remove veb struct
9316  * @veb: the veb to remove
9317  **/
9318 static void i40e_veb_clear(struct i40e_veb *veb)
9319 {
9320         if (!veb)
9321                 return;
9322
9323         if (veb->pf) {
9324                 struct i40e_pf *pf = veb->pf;
9325
9326                 mutex_lock(&pf->switch_mutex);
9327                 if (pf->veb[veb->idx] == veb)
9328                         pf->veb[veb->idx] = NULL;
9329                 mutex_unlock(&pf->switch_mutex);
9330         }
9331
9332         kfree(veb);
9333 }
9334
9335 /**
9336  * i40e_veb_release - Delete a VEB and free its resources
9337  * @veb: the VEB being removed
9338  **/
9339 void i40e_veb_release(struct i40e_veb *veb)
9340 {
9341         struct i40e_vsi *vsi = NULL;
9342         struct i40e_pf *pf;
9343         int i, n = 0;
9344
9345         pf = veb->pf;
9346
9347         /* find the remaining VSI and check for extras */
9348         for (i = 0; i < pf->num_alloc_vsi; i++) {
9349                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9350                         n++;
9351                         vsi = pf->vsi[i];
9352                 }
9353         }
9354         if (n != 1) {
9355                 dev_info(&pf->pdev->dev,
9356                          "can't remove VEB %d with %d VSIs left\n",
9357                          veb->seid, n);
9358                 return;
9359         }
9360
9361         /* move the remaining VSI to uplink veb */
9362         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9363         if (veb->uplink_seid) {
9364                 vsi->uplink_seid = veb->uplink_seid;
9365                 if (veb->uplink_seid == pf->mac_seid)
9366                         vsi->veb_idx = I40E_NO_VEB;
9367                 else
9368                         vsi->veb_idx = veb->veb_idx;
9369         } else {
9370                 /* floating VEB */
9371                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9372                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9373         }
9374
9375         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9376         i40e_veb_clear(veb);
9377 }
9378
9379 /**
9380  * i40e_add_veb - create the VEB in the switch
9381  * @veb: the VEB to be instantiated
9382  * @vsi: the controlling VSI
9383  **/
9384 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9385 {
9386         struct i40e_pf *pf = veb->pf;
9387         bool is_default = veb->pf->cur_promisc;
9388         bool is_cloud = false;
9389         int ret;
9390
9391         /* get a VEB from the hardware */
9392         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9393                               veb->enabled_tc, is_default,
9394                               is_cloud, &veb->seid, NULL);
9395         if (ret) {
9396                 dev_info(&pf->pdev->dev,
9397                          "couldn't add VEB, err %s aq_err %s\n",
9398                          i40e_stat_str(&pf->hw, ret),
9399                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9400                 return -EPERM;
9401         }
9402
9403         /* get statistics counter */
9404         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9405                                          &veb->stats_idx, NULL, NULL, NULL);
9406         if (ret) {
9407                 dev_info(&pf->pdev->dev,
9408                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9409                          i40e_stat_str(&pf->hw, ret),
9410                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9411                 return -EPERM;
9412         }
9413         ret = i40e_veb_get_bw_info(veb);
9414         if (ret) {
9415                 dev_info(&pf->pdev->dev,
9416                          "couldn't get VEB bw info, err %s aq_err %s\n",
9417                          i40e_stat_str(&pf->hw, ret),
9418                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9419                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9420                 return -ENOENT;
9421         }
9422
9423         vsi->uplink_seid = veb->seid;
9424         vsi->veb_idx = veb->idx;
9425         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9426
9427         return 0;
9428 }
9429
9430 /**
9431  * i40e_veb_setup - Set up a VEB
9432  * @pf: board private structure
9433  * @flags: VEB setup flags
9434  * @uplink_seid: the switch element to link to
9435  * @vsi_seid: the initial VSI seid
9436  * @enabled_tc: Enabled TC bit-map
9437  *
9438  * This allocates the sw VEB structure and links it into the switch
9439  * It is possible and legal for this to be a duplicate of an already
9440  * existing VEB.  It is also possible for both uplink and vsi seids
9441  * to be zero, in order to create a floating VEB.
9442  *
9443  * Returns pointer to the successfully allocated VEB sw struct on
9444  * success, otherwise returns NULL on failure.
9445  **/
9446 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9447                                 u16 uplink_seid, u16 vsi_seid,
9448                                 u8 enabled_tc)
9449 {
9450         struct i40e_veb *veb, *uplink_veb = NULL;
9451         int vsi_idx, veb_idx;
9452         int ret;
9453
9454         /* if one seid is 0, the other must be 0 to create a floating relay */
9455         if ((uplink_seid == 0 || vsi_seid == 0) &&
9456             (uplink_seid + vsi_seid != 0)) {
9457                 dev_info(&pf->pdev->dev,
9458                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9459                          uplink_seid, vsi_seid);
9460                 return NULL;
9461         }
9462
9463         /* make sure there is such a vsi and uplink */
9464         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9465                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9466                         break;
9467         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9468                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9469                          vsi_seid);
9470                 return NULL;
9471         }
9472
9473         if (uplink_seid && uplink_seid != pf->mac_seid) {
9474                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9475                         if (pf->veb[veb_idx] &&
9476                             pf->veb[veb_idx]->seid == uplink_seid) {
9477                                 uplink_veb = pf->veb[veb_idx];
9478                                 break;
9479                         }
9480                 }
9481                 if (!uplink_veb) {
9482                         dev_info(&pf->pdev->dev,
9483                                  "uplink seid %d not found\n", uplink_seid);
9484                         return NULL;
9485                 }
9486         }
9487
9488         /* get veb sw struct */
9489         veb_idx = i40e_veb_mem_alloc(pf);
9490         if (veb_idx < 0)
9491                 goto err_alloc;
9492         veb = pf->veb[veb_idx];
9493         veb->flags = flags;
9494         veb->uplink_seid = uplink_seid;
9495         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9496         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9497
9498         /* create the VEB in the switch */
9499         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9500         if (ret)
9501                 goto err_veb;
9502         if (vsi_idx == pf->lan_vsi)
9503                 pf->lan_veb = veb->idx;
9504
9505         return veb;
9506
9507 err_veb:
9508         i40e_veb_clear(veb);
9509 err_alloc:
9510         return NULL;
9511 }
9512
9513 /**
9514  * i40e_setup_pf_switch_element - set PF vars based on switch type
9515  * @pf: board private structure
9516  * @ele: element we are building info from
9517  * @num_reported: total number of elements
9518  * @printconfig: should we print the contents
9519  *
9520  * helper function to assist in extracting a few useful SEID values.
9521  **/
9522 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9523                                 struct i40e_aqc_switch_config_element_resp *ele,
9524                                 u16 num_reported, bool printconfig)
9525 {
9526         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9527         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9528         u8 element_type = ele->element_type;
9529         u16 seid = le16_to_cpu(ele->seid);
9530
9531         if (printconfig)
9532                 dev_info(&pf->pdev->dev,
9533                          "type=%d seid=%d uplink=%d downlink=%d\n",
9534                          element_type, seid, uplink_seid, downlink_seid);
9535
9536         switch (element_type) {
9537         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9538                 pf->mac_seid = seid;
9539                 break;
9540         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9541                 /* Main VEB? */
9542                 if (uplink_seid != pf->mac_seid)
9543                         break;
9544                 if (pf->lan_veb == I40E_NO_VEB) {
9545                         int v;
9546
9547                         /* find existing or else empty VEB */
9548                         for (v = 0; v < I40E_MAX_VEB; v++) {
9549                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9550                                         pf->lan_veb = v;
9551                                         break;
9552                                 }
9553                         }
9554                         if (pf->lan_veb == I40E_NO_VEB) {
9555                                 v = i40e_veb_mem_alloc(pf);
9556                                 if (v < 0)
9557                                         break;
9558                                 pf->lan_veb = v;
9559                         }
9560                 }
9561
9562                 pf->veb[pf->lan_veb]->seid = seid;
9563                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9564                 pf->veb[pf->lan_veb]->pf = pf;
9565                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9566                 break;
9567         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9568                 if (num_reported != 1)
9569                         break;
9570                 /* This is immediately after a reset so we can assume this is
9571                  * the PF's VSI
9572                  */
9573                 pf->mac_seid = uplink_seid;
9574                 pf->pf_seid = downlink_seid;
9575                 pf->main_vsi_seid = seid;
9576                 if (printconfig)
9577                         dev_info(&pf->pdev->dev,
9578                                  "pf_seid=%d main_vsi_seid=%d\n",
9579                                  pf->pf_seid, pf->main_vsi_seid);
9580                 break;
9581         case I40E_SWITCH_ELEMENT_TYPE_PF:
9582         case I40E_SWITCH_ELEMENT_TYPE_VF:
9583         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9584         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9585         case I40E_SWITCH_ELEMENT_TYPE_PE:
9586         case I40E_SWITCH_ELEMENT_TYPE_PA:
9587                 /* ignore these for now */
9588                 break;
9589         default:
9590                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9591                          element_type, seid);
9592                 break;
9593         }
9594 }
9595
9596 /**
9597  * i40e_fetch_switch_configuration - Get switch config from firmware
9598  * @pf: board private structure
9599  * @printconfig: should we print the contents
9600  *
9601  * Get the current switch configuration from the device and
9602  * extract a few useful SEID values.
9603  **/
9604 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9605 {
9606         struct i40e_aqc_get_switch_config_resp *sw_config;
9607         u16 next_seid = 0;
9608         int ret = 0;
9609         u8 *aq_buf;
9610         int i;
9611
9612         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9613         if (!aq_buf)
9614                 return -ENOMEM;
9615
9616         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9617         do {
9618                 u16 num_reported, num_total;
9619
9620                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9621                                                 I40E_AQ_LARGE_BUF,
9622                                                 &next_seid, NULL);
9623                 if (ret) {
9624                         dev_info(&pf->pdev->dev,
9625                                  "get switch config failed err %s aq_err %s\n",
9626                                  i40e_stat_str(&pf->hw, ret),
9627                                  i40e_aq_str(&pf->hw,
9628                                              pf->hw.aq.asq_last_status));
9629                         kfree(aq_buf);
9630                         return -ENOENT;
9631                 }
9632
9633                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9634                 num_total = le16_to_cpu(sw_config->header.num_total);
9635
9636                 if (printconfig)
9637                         dev_info(&pf->pdev->dev,
9638                                  "header: %d reported %d total\n",
9639                                  num_reported, num_total);
9640
9641                 for (i = 0; i < num_reported; i++) {
9642                         struct i40e_aqc_switch_config_element_resp *ele =
9643                                 &sw_config->element[i];
9644
9645                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9646                                                      printconfig);
9647                 }
9648         } while (next_seid != 0);
9649
9650         kfree(aq_buf);
9651         return ret;
9652 }
9653
9654 /**
9655  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9656  * @pf: board private structure
9657  * @reinit: if the Main VSI needs to re-initialized.
9658  *
9659  * Returns 0 on success, negative value on failure
9660  **/
9661 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9662 {
9663         int ret;
9664
9665         /* find out what's out there already */
9666         ret = i40e_fetch_switch_configuration(pf, false);
9667         if (ret) {
9668                 dev_info(&pf->pdev->dev,
9669                          "couldn't fetch switch config, err %s aq_err %s\n",
9670                          i40e_stat_str(&pf->hw, ret),
9671                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9672                 return ret;
9673         }
9674         i40e_pf_reset_stats(pf);
9675
9676         /* first time setup */
9677         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9678                 struct i40e_vsi *vsi = NULL;
9679                 u16 uplink_seid;
9680
9681                 /* Set up the PF VSI associated with the PF's main VSI
9682                  * that is already in the HW switch
9683                  */
9684                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9685                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9686                 else
9687                         uplink_seid = pf->mac_seid;
9688                 if (pf->lan_vsi == I40E_NO_VSI)
9689                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9690                 else if (reinit)
9691                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9692                 if (!vsi) {
9693                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9694                         i40e_fdir_teardown(pf);
9695                         return -EAGAIN;
9696                 }
9697         } else {
9698                 /* force a reset of TC and queue layout configurations */
9699                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9700                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9701                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9702                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9703         }
9704         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9705
9706         i40e_fdir_sb_setup(pf);
9707
9708         /* Setup static PF queue filter control settings */
9709         ret = i40e_setup_pf_filter_control(pf);
9710         if (ret) {
9711                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9712                          ret);
9713                 /* Failure here should not stop continuing other steps */
9714         }
9715
9716         /* enable RSS in the HW, even for only one queue, as the stack can use
9717          * the hash
9718          */
9719         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9720                 i40e_config_rss(pf);
9721
9722         /* fill in link information and enable LSE reporting */
9723         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9724         i40e_link_event(pf);
9725
9726         /* Initialize user-specific link properties */
9727         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9728                                   I40E_AQ_AN_COMPLETED) ? true : false);
9729
9730         i40e_ptp_init(pf);
9731
9732         return ret;
9733 }
9734
9735 /**
9736  * i40e_determine_queue_usage - Work out queue distribution
9737  * @pf: board private structure
9738  **/
9739 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9740 {
9741         int queues_left;
9742
9743         pf->num_lan_qps = 0;
9744 #ifdef I40E_FCOE
9745         pf->num_fcoe_qps = 0;
9746 #endif
9747
9748         /* Find the max queues to be put into basic use.  We'll always be
9749          * using TC0, whether or not DCB is running, and TC0 will get the
9750          * big RSS set.
9751          */
9752         queues_left = pf->hw.func_caps.num_tx_qp;
9753
9754         if ((queues_left == 1) ||
9755             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9756                 /* one qp for PF, no queues for anything else */
9757                 queues_left = 0;
9758                 pf->rss_size = pf->num_lan_qps = 1;
9759
9760                 /* make sure all the fancies are disabled */
9761                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9762 #ifdef I40E_FCOE
9763                                I40E_FLAG_FCOE_ENABLED   |
9764 #endif
9765                                I40E_FLAG_FD_SB_ENABLED  |
9766                                I40E_FLAG_FD_ATR_ENABLED |
9767                                I40E_FLAG_DCB_CAPABLE    |
9768                                I40E_FLAG_SRIOV_ENABLED  |
9769                                I40E_FLAG_VMDQ_ENABLED);
9770         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9771                                   I40E_FLAG_FD_SB_ENABLED |
9772                                   I40E_FLAG_FD_ATR_ENABLED |
9773                                   I40E_FLAG_DCB_CAPABLE))) {
9774                 /* one qp for PF */
9775                 pf->rss_size = pf->num_lan_qps = 1;
9776                 queues_left -= pf->num_lan_qps;
9777
9778                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9779 #ifdef I40E_FCOE
9780                                I40E_FLAG_FCOE_ENABLED   |
9781 #endif
9782                                I40E_FLAG_FD_SB_ENABLED  |
9783                                I40E_FLAG_FD_ATR_ENABLED |
9784                                I40E_FLAG_DCB_ENABLED    |
9785                                I40E_FLAG_VMDQ_ENABLED);
9786         } else {
9787                 /* Not enough queues for all TCs */
9788                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9789                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9790                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9791                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9792                 }
9793                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9794                                         num_online_cpus());
9795                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9796                                         pf->hw.func_caps.num_tx_qp);
9797
9798                 queues_left -= pf->num_lan_qps;
9799         }
9800
9801 #ifdef I40E_FCOE
9802         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9803                 if (I40E_DEFAULT_FCOE <= queues_left) {
9804                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9805                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9806                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9807                 } else {
9808                         pf->num_fcoe_qps = 0;
9809                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9810                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9811                 }
9812
9813                 queues_left -= pf->num_fcoe_qps;
9814         }
9815
9816 #endif
9817         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9818                 if (queues_left > 1) {
9819                         queues_left -= 1; /* save 1 queue for FD */
9820                 } else {
9821                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9822                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9823                 }
9824         }
9825
9826         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9827             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9828                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9829                                         (queues_left / pf->num_vf_qps));
9830                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9831         }
9832
9833         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9834             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9835                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9836                                           (queues_left / pf->num_vmdq_qps));
9837                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9838         }
9839
9840         pf->queues_left = queues_left;
9841 #ifdef I40E_FCOE
9842         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9843 #endif
9844 }
9845
9846 /**
9847  * i40e_setup_pf_filter_control - Setup PF static filter control
9848  * @pf: PF to be setup
9849  *
9850  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9851  * settings. If PE/FCoE are enabled then it will also set the per PF
9852  * based filter sizes required for them. It also enables Flow director,
9853  * ethertype and macvlan type filter settings for the pf.
9854  *
9855  * Returns 0 on success, negative on failure
9856  **/
9857 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9858 {
9859         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9860
9861         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9862
9863         /* Flow Director is enabled */
9864         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9865                 settings->enable_fdir = true;
9866
9867         /* Ethtype and MACVLAN filters enabled for PF */
9868         settings->enable_ethtype = true;
9869         settings->enable_macvlan = true;
9870
9871         if (i40e_set_filter_control(&pf->hw, settings))
9872                 return -ENOENT;
9873
9874         return 0;
9875 }
9876
9877 #define INFO_STRING_LEN 255
9878 static void i40e_print_features(struct i40e_pf *pf)
9879 {
9880         struct i40e_hw *hw = &pf->hw;
9881         char *buf, *string;
9882
9883         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9884         if (!string) {
9885                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9886                 return;
9887         }
9888
9889         buf = string;
9890
9891         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9892 #ifdef CONFIG_PCI_IOV
9893         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9894 #endif
9895         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9896                        pf->hw.func_caps.num_vsis,
9897                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9898                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9899
9900         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9901                 buf += sprintf(buf, "RSS ");
9902         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9903                 buf += sprintf(buf, "FD_ATR ");
9904         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9905                 buf += sprintf(buf, "FD_SB ");
9906                 buf += sprintf(buf, "NTUPLE ");
9907         }
9908         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9909                 buf += sprintf(buf, "DCB ");
9910         if (pf->flags & I40E_FLAG_PTP)
9911                 buf += sprintf(buf, "PTP ");
9912 #ifdef I40E_FCOE
9913         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9914                 buf += sprintf(buf, "FCOE ");
9915 #endif
9916
9917         BUG_ON(buf > (string + INFO_STRING_LEN));
9918         dev_info(&pf->pdev->dev, "%s\n", string);
9919         kfree(string);
9920 }
9921
9922 /**
9923  * i40e_probe - Device initialization routine
9924  * @pdev: PCI device information struct
9925  * @ent: entry in i40e_pci_tbl
9926  *
9927  * i40e_probe initializes a PF identified by a pci_dev structure.
9928  * The OS initialization, configuring of the PF private structure,
9929  * and a hardware reset occur.
9930  *
9931  * Returns 0 on success, negative on failure
9932  **/
9933 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9934 {
9935         struct i40e_aq_get_phy_abilities_resp abilities;
9936         struct i40e_pf *pf;
9937         struct i40e_hw *hw;
9938         static u16 pfs_found;
9939         u16 wol_nvm_bits;
9940         u16 link_status;
9941         int err = 0;
9942         u32 len;
9943         u32 i;
9944
9945         err = pci_enable_device_mem(pdev);
9946         if (err)
9947                 return err;
9948
9949         /* set up for high or low dma */
9950         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9951         if (err) {
9952                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9953                 if (err) {
9954                         dev_err(&pdev->dev,
9955                                 "DMA configuration failed: 0x%x\n", err);
9956                         goto err_dma;
9957                 }
9958         }
9959
9960         /* set up pci connections */
9961         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9962                                            IORESOURCE_MEM), i40e_driver_name);
9963         if (err) {
9964                 dev_info(&pdev->dev,
9965                          "pci_request_selected_regions failed %d\n", err);
9966                 goto err_pci_reg;
9967         }
9968
9969         pci_enable_pcie_error_reporting(pdev);
9970         pci_set_master(pdev);
9971
9972         /* Now that we have a PCI connection, we need to do the
9973          * low level device setup.  This is primarily setting up
9974          * the Admin Queue structures and then querying for the
9975          * device's current profile information.
9976          */
9977         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9978         if (!pf) {
9979                 err = -ENOMEM;
9980                 goto err_pf_alloc;
9981         }
9982         pf->next_vsi = 0;
9983         pf->pdev = pdev;
9984         set_bit(__I40E_DOWN, &pf->state);
9985
9986         hw = &pf->hw;
9987         hw->back = pf;
9988
9989         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
9990                                 I40E_MAX_CSR_SPACE);
9991
9992         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
9993         if (!hw->hw_addr) {
9994                 err = -EIO;
9995                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9996                          (unsigned int)pci_resource_start(pdev, 0),
9997                          pf->ioremap_len, err);
9998                 goto err_ioremap;
9999         }
10000         hw->vendor_id = pdev->vendor;
10001         hw->device_id = pdev->device;
10002         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10003         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10004         hw->subsystem_device_id = pdev->subsystem_device;
10005         hw->bus.device = PCI_SLOT(pdev->devfn);
10006         hw->bus.func = PCI_FUNC(pdev->devfn);
10007         pf->instance = pfs_found;
10008
10009         if (debug != -1) {
10010                 pf->msg_enable = pf->hw.debug_mask;
10011                 pf->msg_enable = debug;
10012         }
10013
10014         /* do a special CORER for clearing PXE mode once at init */
10015         if (hw->revision_id == 0 &&
10016             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10017                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10018                 i40e_flush(hw);
10019                 msleep(200);
10020                 pf->corer_count++;
10021
10022                 i40e_clear_pxe_mode(hw);
10023         }
10024
10025         /* Reset here to make sure all is clean and to define PF 'n' */
10026         i40e_clear_hw(hw);
10027         err = i40e_pf_reset(hw);
10028         if (err) {
10029                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10030                 goto err_pf_reset;
10031         }
10032         pf->pfr_count++;
10033
10034         hw->aq.num_arq_entries = I40E_AQ_LEN;
10035         hw->aq.num_asq_entries = I40E_AQ_LEN;
10036         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10037         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10038         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10039
10040         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10041                  "%s-%s:misc",
10042                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10043
10044         err = i40e_init_shared_code(hw);
10045         if (err) {
10046                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10047                          err);
10048                 goto err_pf_reset;
10049         }
10050
10051         /* set up a default setting for link flow control */
10052         pf->hw.fc.requested_mode = I40E_FC_NONE;
10053
10054         err = i40e_init_adminq(hw);
10055         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10056         if (err) {
10057                 dev_info(&pdev->dev,
10058                          "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");
10059                 goto err_pf_reset;
10060         }
10061
10062         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10063             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10064                 dev_info(&pdev->dev,
10065                          "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");
10066         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10067                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10068                 dev_info(&pdev->dev,
10069                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10070
10071         i40e_verify_eeprom(pf);
10072
10073         /* Rev 0 hardware was never productized */
10074         if (hw->revision_id < 1)
10075                 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");
10076
10077         i40e_clear_pxe_mode(hw);
10078         err = i40e_get_capabilities(pf);
10079         if (err)
10080                 goto err_adminq_setup;
10081
10082         err = i40e_sw_init(pf);
10083         if (err) {
10084                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10085                 goto err_sw_init;
10086         }
10087
10088         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10089                                 hw->func_caps.num_rx_qp,
10090                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10091         if (err) {
10092                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10093                 goto err_init_lan_hmc;
10094         }
10095
10096         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10097         if (err) {
10098                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10099                 err = -ENOENT;
10100                 goto err_configure_lan_hmc;
10101         }
10102
10103         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10104          * Ignore error return codes because if it was already disabled via
10105          * hardware settings this will fail
10106          */
10107         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10108             (pf->hw.aq.fw_maj_ver < 4)) {
10109                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10110                 i40e_aq_stop_lldp(hw, true, NULL);
10111         }
10112
10113         i40e_get_mac_addr(hw, hw->mac.addr);
10114         if (!is_valid_ether_addr(hw->mac.addr)) {
10115                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10116                 err = -EIO;
10117                 goto err_mac_addr;
10118         }
10119         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10120         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10121         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10122         if (is_valid_ether_addr(hw->mac.port_addr))
10123                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10124 #ifdef I40E_FCOE
10125         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10126         if (err)
10127                 dev_info(&pdev->dev,
10128                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10129         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10130                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10131                          hw->mac.san_addr);
10132                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10133         }
10134         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10135 #endif /* I40E_FCOE */
10136
10137         pci_set_drvdata(pdev, pf);
10138         pci_save_state(pdev);
10139 #ifdef CONFIG_I40E_DCB
10140         err = i40e_init_pf_dcb(pf);
10141         if (err) {
10142                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10143                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10144                 /* Continue without DCB enabled */
10145         }
10146 #endif /* CONFIG_I40E_DCB */
10147
10148         /* set up periodic task facility */
10149         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10150         pf->service_timer_period = HZ;
10151
10152         INIT_WORK(&pf->service_task, i40e_service_task);
10153         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10154         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10155
10156         /* NVM bit on means WoL disabled for the port */
10157         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10158         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10159                 pf->wol_en = false;
10160         else
10161                 pf->wol_en = true;
10162         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10163
10164         /* set up the main switch operations */
10165         i40e_determine_queue_usage(pf);
10166         err = i40e_init_interrupt_scheme(pf);
10167         if (err)
10168                 goto err_switch_setup;
10169
10170         /* The number of VSIs reported by the FW is the minimum guaranteed
10171          * to us; HW supports far more and we share the remaining pool with
10172          * the other PFs. We allocate space for more than the guarantee with
10173          * the understanding that we might not get them all later.
10174          */
10175         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10176                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10177         else
10178                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10179
10180         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10181         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10182         pf->vsi = kzalloc(len, GFP_KERNEL);
10183         if (!pf->vsi) {
10184                 err = -ENOMEM;
10185                 goto err_switch_setup;
10186         }
10187
10188 #ifdef CONFIG_PCI_IOV
10189         /* prep for VF support */
10190         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10191             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10192             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10193                 if (pci_num_vf(pdev))
10194                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10195         }
10196 #endif
10197         err = i40e_setup_pf_switch(pf, false);
10198         if (err) {
10199                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10200                 goto err_vsis;
10201         }
10202         /* if FDIR VSI was set up, start it now */
10203         for (i = 0; i < pf->num_alloc_vsi; i++) {
10204                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10205                         i40e_vsi_open(pf->vsi[i]);
10206                         break;
10207                 }
10208         }
10209
10210         /* driver is only interested in link up/down and module qualification
10211          * reports from firmware
10212          */
10213         err = i40e_aq_set_phy_int_mask(&pf->hw,
10214                                        I40E_AQ_EVENT_LINK_UPDOWN |
10215                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10216         if (err)
10217                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10218                          i40e_stat_str(&pf->hw, err),
10219                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10220
10221         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10222             (pf->hw.aq.fw_maj_ver < 4)) {
10223                 msleep(75);
10224                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10225                 if (err)
10226                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10227                                  i40e_stat_str(&pf->hw, err),
10228                                  i40e_aq_str(&pf->hw,
10229                                              pf->hw.aq.asq_last_status));
10230         }
10231         /* The main driver is (mostly) up and happy. We need to set this state
10232          * before setting up the misc vector or we get a race and the vector
10233          * ends up disabled forever.
10234          */
10235         clear_bit(__I40E_DOWN, &pf->state);
10236
10237         /* In case of MSIX we are going to setup the misc vector right here
10238          * to handle admin queue events etc. In case of legacy and MSI
10239          * the misc functionality and queue processing is combined in
10240          * the same vector and that gets setup at open.
10241          */
10242         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10243                 err = i40e_setup_misc_vector(pf);
10244                 if (err) {
10245                         dev_info(&pdev->dev,
10246                                  "setup of misc vector failed: %d\n", err);
10247                         goto err_vsis;
10248                 }
10249         }
10250
10251 #ifdef CONFIG_PCI_IOV
10252         /* prep for VF support */
10253         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10254             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10255             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10256                 u32 val;
10257
10258                 /* disable link interrupts for VFs */
10259                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10260                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10261                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10262                 i40e_flush(hw);
10263
10264                 if (pci_num_vf(pdev)) {
10265                         dev_info(&pdev->dev,
10266                                  "Active VFs found, allocating resources.\n");
10267                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10268                         if (err)
10269                                 dev_info(&pdev->dev,
10270                                          "Error %d allocating resources for existing VFs\n",
10271                                          err);
10272                 }
10273         }
10274 #endif /* CONFIG_PCI_IOV */
10275
10276         pfs_found++;
10277
10278         i40e_dbg_pf_init(pf);
10279
10280         /* tell the firmware that we're starting */
10281         i40e_send_version(pf);
10282
10283         /* since everything's happy, start the service_task timer */
10284         mod_timer(&pf->service_timer,
10285                   round_jiffies(jiffies + pf->service_timer_period));
10286
10287 #ifdef I40E_FCOE
10288         /* create FCoE interface */
10289         i40e_fcoe_vsi_setup(pf);
10290
10291 #endif
10292         /* Get the negotiated link width and speed from PCI config space */
10293         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10294
10295         i40e_set_pci_config_data(hw, link_status);
10296
10297         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10298                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10299                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10300                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10301                  "Unknown"),
10302                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10303                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10304                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10305                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10306                  "Unknown"));
10307
10308         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10309             hw->bus.speed < i40e_bus_speed_8000) {
10310                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10311                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10312         }
10313
10314         /* get the requested speeds from the fw */
10315         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10316         if (err)
10317                 dev_info(&pf->pdev->dev,
10318                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10319                          i40e_stat_str(&pf->hw, err),
10320                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10321         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10322
10323         /* print a string summarizing features */
10324         i40e_print_features(pf);
10325
10326         return 0;
10327
10328         /* Unwind what we've done if something failed in the setup */
10329 err_vsis:
10330         set_bit(__I40E_DOWN, &pf->state);
10331         i40e_clear_interrupt_scheme(pf);
10332         kfree(pf->vsi);
10333 err_switch_setup:
10334         i40e_reset_interrupt_capability(pf);
10335         del_timer_sync(&pf->service_timer);
10336 err_mac_addr:
10337 err_configure_lan_hmc:
10338         (void)i40e_shutdown_lan_hmc(hw);
10339 err_init_lan_hmc:
10340         kfree(pf->qp_pile);
10341 err_sw_init:
10342 err_adminq_setup:
10343         (void)i40e_shutdown_adminq(hw);
10344 err_pf_reset:
10345         iounmap(hw->hw_addr);
10346 err_ioremap:
10347         kfree(pf);
10348 err_pf_alloc:
10349         pci_disable_pcie_error_reporting(pdev);
10350         pci_release_selected_regions(pdev,
10351                                      pci_select_bars(pdev, IORESOURCE_MEM));
10352 err_pci_reg:
10353 err_dma:
10354         pci_disable_device(pdev);
10355         return err;
10356 }
10357
10358 /**
10359  * i40e_remove - Device removal routine
10360  * @pdev: PCI device information struct
10361  *
10362  * i40e_remove is called by the PCI subsystem to alert the driver
10363  * that is should release a PCI device.  This could be caused by a
10364  * Hot-Plug event, or because the driver is going to be removed from
10365  * memory.
10366  **/
10367 static void i40e_remove(struct pci_dev *pdev)
10368 {
10369         struct i40e_pf *pf = pci_get_drvdata(pdev);
10370         i40e_status ret_code;
10371         int i;
10372
10373         i40e_dbg_pf_exit(pf);
10374
10375         i40e_ptp_stop(pf);
10376
10377         /* no more scheduling of any task */
10378         set_bit(__I40E_DOWN, &pf->state);
10379         del_timer_sync(&pf->service_timer);
10380         cancel_work_sync(&pf->service_task);
10381         i40e_fdir_teardown(pf);
10382
10383         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10384                 i40e_free_vfs(pf);
10385                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10386         }
10387
10388         i40e_fdir_teardown(pf);
10389
10390         /* If there is a switch structure or any orphans, remove them.
10391          * This will leave only the PF's VSI remaining.
10392          */
10393         for (i = 0; i < I40E_MAX_VEB; i++) {
10394                 if (!pf->veb[i])
10395                         continue;
10396
10397                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10398                     pf->veb[i]->uplink_seid == 0)
10399                         i40e_switch_branch_release(pf->veb[i]);
10400         }
10401
10402         /* Now we can shutdown the PF's VSI, just before we kill
10403          * adminq and hmc.
10404          */
10405         if (pf->vsi[pf->lan_vsi])
10406                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10407
10408         /* shutdown and destroy the HMC */
10409         if (pf->hw.hmc.hmc_obj) {
10410                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10411                 if (ret_code)
10412                         dev_warn(&pdev->dev,
10413                                  "Failed to destroy the HMC resources: %d\n",
10414                                  ret_code);
10415         }
10416
10417         /* shutdown the adminq */
10418         ret_code = i40e_shutdown_adminq(&pf->hw);
10419         if (ret_code)
10420                 dev_warn(&pdev->dev,
10421                          "Failed to destroy the Admin Queue resources: %d\n",
10422                          ret_code);
10423
10424         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10425         i40e_clear_interrupt_scheme(pf);
10426         for (i = 0; i < pf->num_alloc_vsi; i++) {
10427                 if (pf->vsi[i]) {
10428                         i40e_vsi_clear_rings(pf->vsi[i]);
10429                         i40e_vsi_clear(pf->vsi[i]);
10430                         pf->vsi[i] = NULL;
10431                 }
10432         }
10433
10434         for (i = 0; i < I40E_MAX_VEB; i++) {
10435                 kfree(pf->veb[i]);
10436                 pf->veb[i] = NULL;
10437         }
10438
10439         kfree(pf->qp_pile);
10440         kfree(pf->vsi);
10441
10442         iounmap(pf->hw.hw_addr);
10443         kfree(pf);
10444         pci_release_selected_regions(pdev,
10445                                      pci_select_bars(pdev, IORESOURCE_MEM));
10446
10447         pci_disable_pcie_error_reporting(pdev);
10448         pci_disable_device(pdev);
10449 }
10450
10451 /**
10452  * i40e_pci_error_detected - warning that something funky happened in PCI land
10453  * @pdev: PCI device information struct
10454  *
10455  * Called to warn that something happened and the error handling steps
10456  * are in progress.  Allows the driver to quiesce things, be ready for
10457  * remediation.
10458  **/
10459 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10460                                                 enum pci_channel_state error)
10461 {
10462         struct i40e_pf *pf = pci_get_drvdata(pdev);
10463
10464         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10465
10466         /* shutdown all operations */
10467         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10468                 rtnl_lock();
10469                 i40e_prep_for_reset(pf);
10470                 rtnl_unlock();
10471         }
10472
10473         /* Request a slot reset */
10474         return PCI_ERS_RESULT_NEED_RESET;
10475 }
10476
10477 /**
10478  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10479  * @pdev: PCI device information struct
10480  *
10481  * Called to find if the driver can work with the device now that
10482  * the pci slot has been reset.  If a basic connection seems good
10483  * (registers are readable and have sane content) then return a
10484  * happy little PCI_ERS_RESULT_xxx.
10485  **/
10486 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10487 {
10488         struct i40e_pf *pf = pci_get_drvdata(pdev);
10489         pci_ers_result_t result;
10490         int err;
10491         u32 reg;
10492
10493         dev_dbg(&pdev->dev, "%s\n", __func__);
10494         if (pci_enable_device_mem(pdev)) {
10495                 dev_info(&pdev->dev,
10496                          "Cannot re-enable PCI device after reset.\n");
10497                 result = PCI_ERS_RESULT_DISCONNECT;
10498         } else {
10499                 pci_set_master(pdev);
10500                 pci_restore_state(pdev);
10501                 pci_save_state(pdev);
10502                 pci_wake_from_d3(pdev, false);
10503
10504                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10505                 if (reg == 0)
10506                         result = PCI_ERS_RESULT_RECOVERED;
10507                 else
10508                         result = PCI_ERS_RESULT_DISCONNECT;
10509         }
10510
10511         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10512         if (err) {
10513                 dev_info(&pdev->dev,
10514                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10515                          err);
10516                 /* non-fatal, continue */
10517         }
10518
10519         return result;
10520 }
10521
10522 /**
10523  * i40e_pci_error_resume - restart operations after PCI error recovery
10524  * @pdev: PCI device information struct
10525  *
10526  * Called to allow the driver to bring things back up after PCI error
10527  * and/or reset recovery has finished.
10528  **/
10529 static void i40e_pci_error_resume(struct pci_dev *pdev)
10530 {
10531         struct i40e_pf *pf = pci_get_drvdata(pdev);
10532
10533         dev_dbg(&pdev->dev, "%s\n", __func__);
10534         if (test_bit(__I40E_SUSPENDED, &pf->state))
10535                 return;
10536
10537         rtnl_lock();
10538         i40e_handle_reset_warning(pf);
10539         rtnl_unlock();
10540 }
10541
10542 /**
10543  * i40e_shutdown - PCI callback for shutting down
10544  * @pdev: PCI device information struct
10545  **/
10546 static void i40e_shutdown(struct pci_dev *pdev)
10547 {
10548         struct i40e_pf *pf = pci_get_drvdata(pdev);
10549         struct i40e_hw *hw = &pf->hw;
10550
10551         set_bit(__I40E_SUSPENDED, &pf->state);
10552         set_bit(__I40E_DOWN, &pf->state);
10553         rtnl_lock();
10554         i40e_prep_for_reset(pf);
10555         rtnl_unlock();
10556
10557         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10558         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10559
10560         del_timer_sync(&pf->service_timer);
10561         cancel_work_sync(&pf->service_task);
10562         i40e_fdir_teardown(pf);
10563
10564         rtnl_lock();
10565         i40e_prep_for_reset(pf);
10566         rtnl_unlock();
10567
10568         wr32(hw, I40E_PFPM_APM,
10569              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10570         wr32(hw, I40E_PFPM_WUFC,
10571              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10572
10573         i40e_clear_interrupt_scheme(pf);
10574
10575         if (system_state == SYSTEM_POWER_OFF) {
10576                 pci_wake_from_d3(pdev, pf->wol_en);
10577                 pci_set_power_state(pdev, PCI_D3hot);
10578         }
10579 }
10580
10581 #ifdef CONFIG_PM
10582 /**
10583  * i40e_suspend - PCI callback for moving to D3
10584  * @pdev: PCI device information struct
10585  **/
10586 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10587 {
10588         struct i40e_pf *pf = pci_get_drvdata(pdev);
10589         struct i40e_hw *hw = &pf->hw;
10590
10591         set_bit(__I40E_SUSPENDED, &pf->state);
10592         set_bit(__I40E_DOWN, &pf->state);
10593
10594         rtnl_lock();
10595         i40e_prep_for_reset(pf);
10596         rtnl_unlock();
10597
10598         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10599         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10600
10601         pci_wake_from_d3(pdev, pf->wol_en);
10602         pci_set_power_state(pdev, PCI_D3hot);
10603
10604         return 0;
10605 }
10606
10607 /**
10608  * i40e_resume - PCI callback for waking up from D3
10609  * @pdev: PCI device information struct
10610  **/
10611 static int i40e_resume(struct pci_dev *pdev)
10612 {
10613         struct i40e_pf *pf = pci_get_drvdata(pdev);
10614         u32 err;
10615
10616         pci_set_power_state(pdev, PCI_D0);
10617         pci_restore_state(pdev);
10618         /* pci_restore_state() clears dev->state_saves, so
10619          * call pci_save_state() again to restore it.
10620          */
10621         pci_save_state(pdev);
10622
10623         err = pci_enable_device_mem(pdev);
10624         if (err) {
10625                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10626                 return err;
10627         }
10628         pci_set_master(pdev);
10629
10630         /* no wakeup events while running */
10631         pci_wake_from_d3(pdev, false);
10632
10633         /* handling the reset will rebuild the device state */
10634         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10635                 clear_bit(__I40E_DOWN, &pf->state);
10636                 rtnl_lock();
10637                 i40e_reset_and_rebuild(pf, false);
10638                 rtnl_unlock();
10639         }
10640
10641         return 0;
10642 }
10643
10644 #endif
10645 static const struct pci_error_handlers i40e_err_handler = {
10646         .error_detected = i40e_pci_error_detected,
10647         .slot_reset = i40e_pci_error_slot_reset,
10648         .resume = i40e_pci_error_resume,
10649 };
10650
10651 static struct pci_driver i40e_driver = {
10652         .name     = i40e_driver_name,
10653         .id_table = i40e_pci_tbl,
10654         .probe    = i40e_probe,
10655         .remove   = i40e_remove,
10656 #ifdef CONFIG_PM
10657         .suspend  = i40e_suspend,
10658         .resume   = i40e_resume,
10659 #endif
10660         .shutdown = i40e_shutdown,
10661         .err_handler = &i40e_err_handler,
10662         .sriov_configure = i40e_pci_sriov_configure,
10663 };
10664
10665 /**
10666  * i40e_init_module - Driver registration routine
10667  *
10668  * i40e_init_module is the first routine called when the driver is
10669  * loaded. All it does is register with the PCI subsystem.
10670  **/
10671 static int __init i40e_init_module(void)
10672 {
10673         pr_info("%s: %s - version %s\n", i40e_driver_name,
10674                 i40e_driver_string, i40e_driver_version_str);
10675         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10676
10677         i40e_dbg_init();
10678         return pci_register_driver(&i40e_driver);
10679 }
10680 module_init(i40e_init_module);
10681
10682 /**
10683  * i40e_exit_module - Driver exit cleanup routine
10684  *
10685  * i40e_exit_module is called just before the driver is removed
10686  * from memory.
10687  **/
10688 static void __exit i40e_exit_module(void)
10689 {
10690         pci_unregister_driver(&i40e_driver);
10691         i40e_dbg_exit();
10692 }
10693 module_exit(i40e_exit_module);