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 2
  42 #define DRV_VERSION_BUILD 10
  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         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 923                            I40E_GLPRT_UPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_unicast,
 926                            &nsd->eth.rx_unicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 928                            I40E_GLPRT_MPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_multicast,
 931                            &nsd->eth.rx_multicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 933                            I40E_GLPRT_BPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_broadcast,
 936                            &nsd->eth.rx_broadcast);
 937         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 938                            I40E_GLPRT_UPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_unicast,
 941                            &nsd->eth.tx_unicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 943                            I40E_GLPRT_MPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_multicast,
 946                            &nsd->eth.tx_multicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 948                            I40E_GLPRT_BPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_broadcast,
 951                            &nsd->eth.tx_broadcast);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->tx_dropped_link_down,
 956                            &nsd->tx_dropped_link_down);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->crc_errors, &nsd->crc_errors);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->illegal_bytes, &nsd->illegal_bytes);
 965
 966         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->mac_local_faults,
 969                            &nsd->mac_local_faults);
 970         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->mac_remote_faults,
 973                            &nsd->mac_remote_faults);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->rx_length_errors,
 978                            &nsd->rx_length_errors);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xon_rx, &nsd->link_xon_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xon_tx, &nsd->link_xon_tx);
 986         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 987         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 990
 991         for (i = 0; i < 8; i++) {
 992                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 993                                    pf->stat_offsets_loaded,
 994                                    &osd->priority_xon_rx[i],
 995                                    &nsd->priority_xon_rx[i]);
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xon_tx[i],
 999                                    &nsd->priority_xon_tx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xoff_tx[i],
1003                                    &nsd->priority_xoff_tx[i]);
1004                 i40e_stat_update32(hw,
1005                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xon_2_xoff[i],
1008                                    &nsd->priority_xon_2_xoff[i]);
1009         }
1010
1011         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1012                            I40E_GLPRT_PRC64L(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->rx_size_64, &nsd->rx_size_64);
1015         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1016                            I40E_GLPRT_PRC127L(hw->port),
1017                            pf->stat_offsets_loaded,
1018                            &osd->rx_size_127, &nsd->rx_size_127);
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1020                            I40E_GLPRT_PRC255L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_255, &nsd->rx_size_255);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1024                            I40E_GLPRT_PRC511L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_511, &nsd->rx_size_511);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1028                            I40E_GLPRT_PRC1023L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_1023, &nsd->rx_size_1023);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1032                            I40E_GLPRT_PRC1522L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_1522, &nsd->rx_size_1522);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1036                            I40E_GLPRT_PRC9522L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_big, &nsd->rx_size_big);
1039
1040         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1041                            I40E_GLPRT_PTC64L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->tx_size_64, &nsd->tx_size_64);
1044         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1045                            I40E_GLPRT_PTC127L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_size_127, &nsd->tx_size_127);
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1049                            I40E_GLPRT_PTC255L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_255, &nsd->tx_size_255);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1053                            I40E_GLPRT_PTC511L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_511, &nsd->tx_size_511);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1057                            I40E_GLPRT_PTC1023L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_1023, &nsd->tx_size_1023);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1061                            I40E_GLPRT_PTC1522L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_1522, &nsd->tx_size_1522);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1065                            I40E_GLPRT_PTC9522L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_big, &nsd->tx_size_big);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_undersize, &nsd->rx_undersize);
1072         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->rx_fragments, &nsd->rx_fragments);
1075         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_oversize, &nsd->rx_oversize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_jabber, &nsd->rx_jabber);
1081
1082         /* FDIR stats */
1083         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1084                            pf->stat_offsets_loaded,
1085                            &osd->fd_atr_match, &nsd->fd_atr_match);
1086         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1087                            pf->stat_offsets_loaded,
1088                            &osd->fd_sb_match, &nsd->fd_sb_match);
1089
1090         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1091         nsd->tx_lpi_status =
1092                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1093                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1094         nsd->rx_lpi_status =
1095                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1096                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1097         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1098                            pf->stat_offsets_loaded,
1099                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1100         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1101                            pf->stat_offsets_loaded,
1102                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1103
1104         pf->stat_offsets_loaded = true;
1105 }
1106
1107 /**
1108  * i40e_update_stats - Update the various statistics counters.
1109  * @vsi: the VSI to be updated
1110  *
1111  * Update the various stats for this VSI and its related entities.
1112  **/
1113 void i40e_update_stats(struct i40e_vsi *vsi)
1114 {
1115         struct i40e_pf *pf = vsi->back;
1116
1117         if (vsi == pf->vsi[pf->lan_vsi])
1118                 i40e_update_pf_stats(pf);
1119
1120         i40e_update_vsi_stats(vsi);
1121 #ifdef I40E_FCOE
1122         i40e_update_fcoe_stats(vsi);
1123 #endif
1124 }
1125
1126 /**
1127  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1128  * @vsi: the VSI to be searched
1129  * @macaddr: the MAC address
1130  * @vlan: the vlan
1131  * @is_vf: make sure its a vf filter, else doesn't matter
1132  * @is_netdev: make sure its a netdev filter, else doesn't matter
1133  *
1134  * Returns ptr to the filter object or NULL
1135  **/
1136 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1137                                                 u8 *macaddr, s16 vlan,
1138                                                 bool is_vf, bool is_netdev)
1139 {
1140         struct i40e_mac_filter *f;
1141
1142         if (!vsi || !macaddr)
1143                 return NULL;
1144
1145         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1146                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1147                     (vlan == f->vlan)    &&
1148                     (!is_vf || f->is_vf) &&
1149                     (!is_netdev || f->is_netdev))
1150                         return f;
1151         }
1152         return NULL;
1153 }
1154
1155 /**
1156  * i40e_find_mac - Find a mac addr in the macvlan filters list
1157  * @vsi: the VSI to be searched
1158  * @macaddr: the MAC address we are searching for
1159  * @is_vf: make sure its a vf filter, else doesn't matter
1160  * @is_netdev: make sure its a netdev filter, else doesn't matter
1161  *
1162  * Returns the first filter with the provided MAC address or NULL if
1163  * MAC address was not found
1164  **/
1165 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1166                                       bool is_vf, bool is_netdev)
1167 {
1168         struct i40e_mac_filter *f;
1169
1170         if (!vsi || !macaddr)
1171                 return NULL;
1172
1173         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1174                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1175                     (!is_vf || f->is_vf) &&
1176                     (!is_netdev || f->is_netdev))
1177                         return f;
1178         }
1179         return NULL;
1180 }
1181
1182 /**
1183  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1184  * @vsi: the VSI to be searched
1185  *
1186  * Returns true if VSI is in vlan mode or false otherwise
1187  **/
1188 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1189 {
1190         struct i40e_mac_filter *f;
1191
1192         /* Only -1 for all the filters denotes not in vlan mode
1193          * so we have to go through all the list in order to make sure
1194          */
1195         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1196                 if (f->vlan >= 0)
1197                         return true;
1198         }
1199
1200         return false;
1201 }
1202
1203 /**
1204  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1205  * @vsi: the VSI to be searched
1206  * @macaddr: the mac address to be filtered
1207  * @is_vf: true if it is a vf
1208  * @is_netdev: true if it is a netdev
1209  *
1210  * Goes through all the macvlan filters and adds a
1211  * macvlan filter for each unique vlan that already exists
1212  *
1213  * Returns first filter found on success, else NULL
1214  **/
1215 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1216                                              bool is_vf, bool is_netdev)
1217 {
1218         struct i40e_mac_filter *f;
1219
1220         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1221                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1222                                       is_vf, is_netdev)) {
1223                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1224                                              is_vf, is_netdev))
1225                                 return NULL;
1226                 }
1227         }
1228
1229         return list_first_entry_or_null(&vsi->mac_filter_list,
1230                                         struct i40e_mac_filter, list);
1231 }
1232
1233 /**
1234  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1235  * @vsi: the PF Main VSI - inappropriate for any other VSI
1236  * @macaddr: the MAC address
1237  *
1238  * Some older firmware configurations set up a default promiscuous VLAN
1239  * filter that needs to be removed.
1240  **/
1241 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1242 {
1243         struct i40e_aqc_remove_macvlan_element_data element;
1244         struct i40e_pf *pf = vsi->back;
1245         i40e_status aq_ret;
1246
1247         /* Only appropriate for the PF main VSI */
1248         if (vsi->type != I40E_VSI_MAIN)
1249                 return -EINVAL;
1250
1251         memset(&element, 0, sizeof(element));
1252         ether_addr_copy(element.mac_addr, macaddr);
1253         element.vlan_tag = 0;
1254         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1255                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1256         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1257         if (aq_ret)
1258                 return -ENOENT;
1259
1260         return 0;
1261 }
1262
1263 /**
1264  * i40e_add_filter - Add a mac/vlan filter to the VSI
1265  * @vsi: the VSI to be searched
1266  * @macaddr: the MAC address
1267  * @vlan: the vlan
1268  * @is_vf: make sure its a vf filter, else doesn't matter
1269  * @is_netdev: make sure its a netdev filter, else doesn't matter
1270  *
1271  * Returns ptr to the filter object or NULL when no memory available.
1272  **/
1273 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1274                                         u8 *macaddr, s16 vlan,
1275                                         bool is_vf, bool is_netdev)
1276 {
1277         struct i40e_mac_filter *f;
1278
1279         if (!vsi || !macaddr)
1280                 return NULL;
1281
1282         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1283         if (!f) {
1284                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1285                 if (!f)
1286                         goto add_filter_out;
1287
1288                 ether_addr_copy(f->macaddr, macaddr);
1289                 f->vlan = vlan;
1290                 f->changed = true;
1291
1292                 INIT_LIST_HEAD(&f->list);
1293                 list_add(&f->list, &vsi->mac_filter_list);
1294         }
1295
1296         /* increment counter and add a new flag if needed */
1297         if (is_vf) {
1298                 if (!f->is_vf) {
1299                         f->is_vf = true;
1300                         f->counter++;
1301                 }
1302         } else if (is_netdev) {
1303                 if (!f->is_netdev) {
1304                         f->is_netdev = true;
1305                         f->counter++;
1306                 }
1307         } else {
1308                 f->counter++;
1309         }
1310
1311         /* changed tells sync_filters_subtask to
1312          * push the filter down to the firmware
1313          */
1314         if (f->changed) {
1315                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1316                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1317         }
1318
1319 add_filter_out:
1320         return f;
1321 }
1322
1323 /**
1324  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1325  * @vsi: the VSI to be searched
1326  * @macaddr: the MAC address
1327  * @vlan: the vlan
1328  * @is_vf: make sure it's a vf filter, else doesn't matter
1329  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1330  **/
1331 void i40e_del_filter(struct i40e_vsi *vsi,
1332                      u8 *macaddr, s16 vlan,
1333                      bool is_vf, bool is_netdev)
1334 {
1335         struct i40e_mac_filter *f;
1336
1337         if (!vsi || !macaddr)
1338                 return;
1339
1340         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1341         if (!f || f->counter == 0)
1342                 return;
1343
1344         if (is_vf) {
1345                 if (f->is_vf) {
1346                         f->is_vf = false;
1347                         f->counter--;
1348                 }
1349         } else if (is_netdev) {
1350                 if (f->is_netdev) {
1351                         f->is_netdev = false;
1352                         f->counter--;
1353                 }
1354         } else {
1355                 /* make sure we don't remove a filter in use by vf or netdev */
1356                 int min_f = 0;
1357                 min_f += (f->is_vf ? 1 : 0);
1358                 min_f += (f->is_netdev ? 1 : 0);
1359
1360                 if (f->counter > min_f)
1361                         f->counter--;
1362         }
1363
1364         /* counter == 0 tells sync_filters_subtask to
1365          * remove the filter from the firmware's list
1366          */
1367         if (f->counter == 0) {
1368                 f->changed = true;
1369                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1370                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1371         }
1372 }
1373
1374 /**
1375  * i40e_set_mac - NDO callback to set mac address
1376  * @netdev: network interface device structure
1377  * @p: pointer to an address structure
1378  *
1379  * Returns 0 on success, negative on failure
1380  **/
1381 #ifdef I40E_FCOE
1382 int i40e_set_mac(struct net_device *netdev, void *p)
1383 #else
1384 static int i40e_set_mac(struct net_device *netdev, void *p)
1385 #endif
1386 {
1387         struct i40e_netdev_priv *np = netdev_priv(netdev);
1388         struct i40e_vsi *vsi = np->vsi;
1389         struct i40e_pf *pf = vsi->back;
1390         struct i40e_hw *hw = &pf->hw;
1391         struct sockaddr *addr = p;
1392         struct i40e_mac_filter *f;
1393
1394         if (!is_valid_ether_addr(addr->sa_data))
1395                 return -EADDRNOTAVAIL;
1396
1397         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1398                 netdev_info(netdev, "already using mac address %pM\n",
1399                             addr->sa_data);
1400                 return 0;
1401         }
1402
1403         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1404             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1405                 return -EADDRNOTAVAIL;
1406
1407         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1408                 netdev_info(netdev, "returning to hw mac address %pM\n",
1409                             hw->mac.addr);
1410         else
1411                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1412
1413         if (vsi->type == I40E_VSI_MAIN) {
1414                 i40e_status ret;
1415                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1416                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1417                                                 addr->sa_data, NULL);
1418                 if (ret) {
1419                         netdev_info(netdev,
1420                                     "Addr change for Main VSI failed: %d\n",
1421                                     ret);
1422                         return -EADDRNOTAVAIL;
1423                 }
1424         }
1425
1426         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1427                 struct i40e_aqc_remove_macvlan_element_data element;
1428
1429                 memset(&element, 0, sizeof(element));
1430                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1431                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1432                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1433         } else {
1434                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1435                                 false, false);
1436         }
1437
1438         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1439                 struct i40e_aqc_add_macvlan_element_data element;
1440
1441                 memset(&element, 0, sizeof(element));
1442                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1443                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1444                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1445         } else {
1446                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1447                                     false, false);
1448                 if (f)
1449                         f->is_laa = true;
1450         }
1451
1452         i40e_sync_vsi_filters(vsi);
1453         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1454
1455         return 0;
1456 }
1457
1458 /**
1459  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1460  * @vsi: the VSI being setup
1461  * @ctxt: VSI context structure
1462  * @enabled_tc: Enabled TCs bitmap
1463  * @is_add: True if called before Add VSI
1464  *
1465  * Setup VSI queue mapping for enabled traffic classes.
1466  **/
1467 #ifdef I40E_FCOE
1468 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1469                               struct i40e_vsi_context *ctxt,
1470                               u8 enabled_tc,
1471                               bool is_add)
1472 #else
1473 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                                      struct i40e_vsi_context *ctxt,
1475                                      u8 enabled_tc,
1476                                      bool is_add)
1477 #endif
1478 {
1479         struct i40e_pf *pf = vsi->back;
1480         u16 sections = 0;
1481         u8 netdev_tc = 0;
1482         u16 numtc = 0;
1483         u16 qcount;
1484         u8 offset;
1485         u16 qmap;
1486         int i;
1487         u16 num_tc_qps = 0;
1488
1489         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1490         offset = 0;
1491
1492         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1493                 /* Find numtc from enabled TC bitmap */
1494                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1495                         if (enabled_tc & (1 << i)) /* TC is enabled */
1496                                 numtc++;
1497                 }
1498                 if (!numtc) {
1499                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1500                         numtc = 1;
1501                 }
1502         } else {
1503                 /* At least TC0 is enabled in case of non-DCB case */
1504                 numtc = 1;
1505         }
1506
1507         vsi->tc_config.numtc = numtc;
1508         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1509         /* Number of queues per enabled TC */
1510         /* In MFP case we can have a much lower count of MSIx
1511          * vectors available and so we need to lower the used
1512          * q count.
1513          */
1514         qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1515         num_tc_qps = qcount / numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1575                 if (vsi->req_queue_pairs > 0)
1576                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1577                 else
1578                         vsi->num_queue_pairs = pf->num_lan_msix;
1579         }
1580
1581         /* Scheduler section valid can only be set for ADD VSI */
1582         if (is_add) {
1583                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1584
1585                 ctxt->info.up_enable_bits = enabled_tc;
1586         }
1587         if (vsi->type == I40E_VSI_SRIOV) {
1588                 ctxt->info.mapping_flags |=
1589                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1590                 for (i = 0; i < vsi->num_queue_pairs; i++)
1591                         ctxt->info.queue_mapping[i] =
1592                                                cpu_to_le16(vsi->base_queue + i);
1593         } else {
1594                 ctxt->info.mapping_flags |=
1595                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1596                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1597         }
1598         ctxt->info.valid_sections |= cpu_to_le16(sections);
1599 }
1600
1601 /**
1602  * i40e_set_rx_mode - NDO callback to set the netdev filters
1603  * @netdev: network interface device structure
1604  **/
1605 #ifdef I40E_FCOE
1606 void i40e_set_rx_mode(struct net_device *netdev)
1607 #else
1608 static void i40e_set_rx_mode(struct net_device *netdev)
1609 #endif
1610 {
1611         struct i40e_netdev_priv *np = netdev_priv(netdev);
1612         struct i40e_mac_filter *f, *ftmp;
1613         struct i40e_vsi *vsi = np->vsi;
1614         struct netdev_hw_addr *uca;
1615         struct netdev_hw_addr *mca;
1616         struct netdev_hw_addr *ha;
1617
1618         /* add addr if not already in the filter list */
1619         netdev_for_each_uc_addr(uca, netdev) {
1620                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1621                         if (i40e_is_vsi_in_vlan(vsi))
1622                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1623                                                      false, true);
1624                         else
1625                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1626                                                 false, true);
1627                 }
1628         }
1629
1630         netdev_for_each_mc_addr(mca, netdev) {
1631                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1632                         if (i40e_is_vsi_in_vlan(vsi))
1633                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1634                                                      false, true);
1635                         else
1636                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1637                                                 false, true);
1638                 }
1639         }
1640
1641         /* remove filter if not in netdev list */
1642         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1643                 bool found = false;
1644
1645                 if (!f->is_netdev)
1646                         continue;
1647
1648                 if (is_multicast_ether_addr(f->macaddr)) {
1649                         netdev_for_each_mc_addr(mca, netdev) {
1650                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1651                                         found = true;
1652                                         break;
1653                                 }
1654                         }
1655                 } else {
1656                         netdev_for_each_uc_addr(uca, netdev) {
1657                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1658                                         found = true;
1659                                         break;
1660                                 }
1661                         }
1662
1663                         for_each_dev_addr(netdev, ha) {
1664                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1665                                         found = true;
1666                                         break;
1667                                 }
1668                         }
1669                 }
1670                 if (!found)
1671                         i40e_del_filter(
1672                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1673         }
1674
1675         /* check for other flag changes */
1676         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1677                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1678                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1679         }
1680 }
1681
1682 /**
1683  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1684  * @vsi: ptr to the VSI
1685  *
1686  * Push any outstanding VSI filter changes through the AdminQ.
1687  *
1688  * Returns 0 or error value
1689  **/
1690 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1691 {
1692         struct i40e_mac_filter *f, *ftmp;
1693         bool promisc_forced_on = false;
1694         bool add_happened = false;
1695         int filter_list_len = 0;
1696         u32 changed_flags = 0;
1697         i40e_status aq_ret = 0;
1698         struct i40e_pf *pf;
1699         int num_add = 0;
1700         int num_del = 0;
1701         u16 cmd_flags;
1702
1703         /* empty array typed pointers, kcalloc later */
1704         struct i40e_aqc_add_macvlan_element_data *add_list;
1705         struct i40e_aqc_remove_macvlan_element_data *del_list;
1706
1707         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1708                 usleep_range(1000, 2000);
1709         pf = vsi->back;
1710
1711         if (vsi->netdev) {
1712                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1713                 vsi->current_netdev_flags = vsi->netdev->flags;
1714         }
1715
1716         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1717                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1718
1719                 filter_list_len = pf->hw.aq.asq_buf_size /
1720                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1721                 del_list = kcalloc(filter_list_len,
1722                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1723                             GFP_KERNEL);
1724                 if (!del_list)
1725                         return -ENOMEM;
1726
1727                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1728                         if (!f->changed)
1729                                 continue;
1730
1731                         if (f->counter != 0)
1732                                 continue;
1733                         f->changed = false;
1734                         cmd_flags = 0;
1735
1736                         /* add to delete list */
1737                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1738                         del_list[num_del].vlan_tag =
1739                                 cpu_to_le16((u16)(f->vlan ==
1740                                             I40E_VLAN_ANY ? 0 : f->vlan));
1741
1742                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1743                         del_list[num_del].flags = cmd_flags;
1744                         num_del++;
1745
1746                         /* unlink from filter list */
1747                         list_del(&f->list);
1748                         kfree(f);
1749
1750                         /* flush a full buffer */
1751                         if (num_del == filter_list_len) {
1752                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1753                                             vsi->seid, del_list, num_del,
1754                                             NULL);
1755                                 num_del = 0;
1756                                 memset(del_list, 0, sizeof(*del_list));
1757
1758                                 if (aq_ret &&
1759                                     pf->hw.aq.asq_last_status !=
1760                                                               I40E_AQ_RC_ENOENT)
1761                                         dev_info(&pf->pdev->dev,
1762                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1763                                                  aq_ret,
1764                                                  pf->hw.aq.asq_last_status);
1765                         }
1766                 }
1767                 if (num_del) {
1768                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1769                                                      del_list, num_del, NULL);
1770                         num_del = 0;
1771
1772                         if (aq_ret &&
1773                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1774                                 dev_info(&pf->pdev->dev,
1775                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1776                                          aq_ret, pf->hw.aq.asq_last_status);
1777                 }
1778
1779                 kfree(del_list);
1780                 del_list = NULL;
1781
1782                 /* do all the adds now */
1783                 filter_list_len = pf->hw.aq.asq_buf_size /
1784                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1785                 add_list = kcalloc(filter_list_len,
1786                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1787                                GFP_KERNEL);
1788                 if (!add_list)
1789                         return -ENOMEM;
1790
1791                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1792                         if (!f->changed)
1793                                 continue;
1794
1795                         if (f->counter == 0)
1796                                 continue;
1797                         f->changed = false;
1798                         add_happened = true;
1799                         cmd_flags = 0;
1800
1801                         /* add to add array */
1802                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1803                         add_list[num_add].vlan_tag =
1804                                 cpu_to_le16(
1805                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1806                         add_list[num_add].queue_number = 0;
1807
1808                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1809                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1810                         num_add++;
1811
1812                         /* flush a full buffer */
1813                         if (num_add == filter_list_len) {
1814                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1815                                                              add_list, num_add,
1816                                                              NULL);
1817                                 num_add = 0;
1818
1819                                 if (aq_ret)
1820                                         break;
1821                                 memset(add_list, 0, sizeof(*add_list));
1822                         }
1823                 }
1824                 if (num_add) {
1825                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1826                                                      add_list, num_add, NULL);
1827                         num_add = 0;
1828                 }
1829                 kfree(add_list);
1830                 add_list = NULL;
1831
1832                 if (add_happened && aq_ret &&
1833                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1834                         dev_info(&pf->pdev->dev,
1835                                  "add filter failed, err %d, aq_err %d\n",
1836                                  aq_ret, pf->hw.aq.asq_last_status);
1837                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1838                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1839                                       &vsi->state)) {
1840                                 promisc_forced_on = true;
1841                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1842                                         &vsi->state);
1843                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1844                         }
1845                 }
1846         }
1847
1848         /* check for changes in promiscuous modes */
1849         if (changed_flags & IFF_ALLMULTI) {
1850                 bool cur_multipromisc;
1851                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1852                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1853                                                                vsi->seid,
1854                                                                cur_multipromisc,
1855                                                                NULL);
1856                 if (aq_ret)
1857                         dev_info(&pf->pdev->dev,
1858                                  "set multi promisc failed, err %d, aq_err %d\n",
1859                                  aq_ret, pf->hw.aq.asq_last_status);
1860         }
1861         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1862                 bool cur_promisc;
1863                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1864                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1865                                         &vsi->state));
1866                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1867                                                              vsi->seid,
1868                                                              cur_promisc, NULL);
1869                 if (aq_ret)
1870                         dev_info(&pf->pdev->dev,
1871                                  "set uni promisc failed, err %d, aq_err %d\n",
1872                                  aq_ret, pf->hw.aq.asq_last_status);
1873                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1874                                                    vsi->seid,
1875                                                    cur_promisc, NULL);
1876                 if (aq_ret)
1877                         dev_info(&pf->pdev->dev,
1878                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1879                                  aq_ret, pf->hw.aq.asq_last_status);
1880         }
1881
1882         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1883         return 0;
1884 }
1885
1886 /**
1887  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1888  * @pf: board private structure
1889  **/
1890 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1891 {
1892         int v;
1893
1894         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1895                 return;
1896         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1897
1898         for (v = 0; v < pf->num_alloc_vsi; v++) {
1899                 if (pf->vsi[v] &&
1900                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1901                         i40e_sync_vsi_filters(pf->vsi[v]);
1902         }
1903 }
1904
1905 /**
1906  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1907  * @netdev: network interface device structure
1908  * @new_mtu: new value for maximum frame size
1909  *
1910  * Returns 0 on success, negative on failure
1911  **/
1912 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1913 {
1914         struct i40e_netdev_priv *np = netdev_priv(netdev);
1915         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1916         struct i40e_vsi *vsi = np->vsi;
1917
1918         /* MTU < 68 is an error and causes problems on some kernels */
1919         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1920                 return -EINVAL;
1921
1922         netdev_info(netdev, "changing MTU from %d to %d\n",
1923                     netdev->mtu, new_mtu);
1924         netdev->mtu = new_mtu;
1925         if (netif_running(netdev))
1926                 i40e_vsi_reinit_locked(vsi);
1927
1928         return 0;
1929 }
1930
1931 /**
1932  * i40e_ioctl - Access the hwtstamp interface
1933  * @netdev: network interface device structure
1934  * @ifr: interface request data
1935  * @cmd: ioctl command
1936  **/
1937 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1938 {
1939         struct i40e_netdev_priv *np = netdev_priv(netdev);
1940         struct i40e_pf *pf = np->vsi->back;
1941
1942         switch (cmd) {
1943         case SIOCGHWTSTAMP:
1944                 return i40e_ptp_get_ts_config(pf, ifr);
1945         case SIOCSHWTSTAMP:
1946                 return i40e_ptp_set_ts_config(pf, ifr);
1947         default:
1948                 return -EOPNOTSUPP;
1949         }
1950 }
1951
1952 /**
1953  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1954  * @vsi: the vsi being adjusted
1955  **/
1956 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1957 {
1958         struct i40e_vsi_context ctxt;
1959         i40e_status ret;
1960
1961         if ((vsi->info.valid_sections &
1962              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1963             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1964                 return;  /* already enabled */
1965
1966         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1967         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1968                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1969
1970         ctxt.seid = vsi->seid;
1971         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1972         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1973         if (ret) {
1974                 dev_info(&vsi->back->pdev->dev,
1975                          "%s: update vsi failed, aq_err=%d\n",
1976                          __func__, vsi->back->hw.aq.asq_last_status);
1977         }
1978 }
1979
1980 /**
1981  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1982  * @vsi: the vsi being adjusted
1983  **/
1984 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1985 {
1986         struct i40e_vsi_context ctxt;
1987         i40e_status ret;
1988
1989         if ((vsi->info.valid_sections &
1990              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1991             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1992              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1993                 return;  /* already disabled */
1994
1995         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1996         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1997                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1998
1999         ctxt.seid = vsi->seid;
2000         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2001         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2002         if (ret) {
2003                 dev_info(&vsi->back->pdev->dev,
2004                          "%s: update vsi failed, aq_err=%d\n",
2005                          __func__, vsi->back->hw.aq.asq_last_status);
2006         }
2007 }
2008
2009 /**
2010  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2011  * @netdev: network interface to be adjusted
2012  * @features: netdev features to test if VLAN offload is enabled or not
2013  **/
2014 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2015 {
2016         struct i40e_netdev_priv *np = netdev_priv(netdev);
2017         struct i40e_vsi *vsi = np->vsi;
2018
2019         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2020                 i40e_vlan_stripping_enable(vsi);
2021         else
2022                 i40e_vlan_stripping_disable(vsi);
2023 }
2024
2025 /**
2026  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2027  * @vsi: the vsi being configured
2028  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2029  **/
2030 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2031 {
2032         struct i40e_mac_filter *f, *add_f;
2033         bool is_netdev, is_vf;
2034
2035         is_vf = (vsi->type == I40E_VSI_SRIOV);
2036         is_netdev = !!(vsi->netdev);
2037
2038         if (is_netdev) {
2039                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2040                                         is_vf, is_netdev);
2041                 if (!add_f) {
2042                         dev_info(&vsi->back->pdev->dev,
2043                                  "Could not add vlan filter %d for %pM\n",
2044                                  vid, vsi->netdev->dev_addr);
2045                         return -ENOMEM;
2046                 }
2047         }
2048
2049         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2050                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2051                 if (!add_f) {
2052                         dev_info(&vsi->back->pdev->dev,
2053                                  "Could not add vlan filter %d for %pM\n",
2054                                  vid, f->macaddr);
2055                         return -ENOMEM;
2056                 }
2057         }
2058
2059         /* Now if we add a vlan tag, make sure to check if it is the first
2060          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2061          * with 0, so we now accept untagged and specified tagged traffic
2062          * (and not any taged and untagged)
2063          */
2064         if (vid > 0) {
2065                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2066                                                   I40E_VLAN_ANY,
2067                                                   is_vf, is_netdev)) {
2068                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2069                                         I40E_VLAN_ANY, is_vf, is_netdev);
2070                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2071                                                 is_vf, is_netdev);
2072                         if (!add_f) {
2073                                 dev_info(&vsi->back->pdev->dev,
2074                                          "Could not add filter 0 for %pM\n",
2075                                          vsi->netdev->dev_addr);
2076                                 return -ENOMEM;
2077                         }
2078                 }
2079         }
2080
2081         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2082         if (vid > 0 && !vsi->info.pvid) {
2083                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2084                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2085                                              is_vf, is_netdev)) {
2086                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2087                                                 is_vf, is_netdev);
2088                                 add_f = i40e_add_filter(vsi, f->macaddr,
2089                                                         0, is_vf, is_netdev);
2090                                 if (!add_f) {
2091                                         dev_info(&vsi->back->pdev->dev,
2092                                                  "Could not add filter 0 for %pM\n",
2093                                                  f->macaddr);
2094                                         return -ENOMEM;
2095                                 }
2096                         }
2097                 }
2098         }
2099
2100         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2101             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2102                 return 0;
2103
2104         return i40e_sync_vsi_filters(vsi);
2105 }
2106
2107 /**
2108  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2109  * @vsi: the vsi being configured
2110  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2111  *
2112  * Return: 0 on success or negative otherwise
2113  **/
2114 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2115 {
2116         struct net_device *netdev = vsi->netdev;
2117         struct i40e_mac_filter *f, *add_f;
2118         bool is_vf, is_netdev;
2119         int filter_count = 0;
2120
2121         is_vf = (vsi->type == I40E_VSI_SRIOV);
2122         is_netdev = !!(netdev);
2123
2124         if (is_netdev)
2125                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2126
2127         list_for_each_entry(f, &vsi->mac_filter_list, list)
2128                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2129
2130         /* go through all the filters for this VSI and if there is only
2131          * vid == 0 it means there are no other filters, so vid 0 must
2132          * be replaced with -1. This signifies that we should from now
2133          * on accept any traffic (with any tag present, or untagged)
2134          */
2135         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2136                 if (is_netdev) {
2137                         if (f->vlan &&
2138                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2139                                 filter_count++;
2140                 }
2141
2142                 if (f->vlan)
2143                         filter_count++;
2144         }
2145
2146         if (!filter_count && is_netdev) {
2147                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2148                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2149                                     is_vf, is_netdev);
2150                 if (!f) {
2151                         dev_info(&vsi->back->pdev->dev,
2152                                  "Could not add filter %d for %pM\n",
2153                                  I40E_VLAN_ANY, netdev->dev_addr);
2154                         return -ENOMEM;
2155                 }
2156         }
2157
2158         if (!filter_count) {
2159                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2160                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2161                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2162                                             is_vf, is_netdev);
2163                         if (!add_f) {
2164                                 dev_info(&vsi->back->pdev->dev,
2165                                          "Could not add filter %d for %pM\n",
2166                                          I40E_VLAN_ANY, f->macaddr);
2167                                 return -ENOMEM;
2168                         }
2169                 }
2170         }
2171
2172         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2173             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2174                 return 0;
2175
2176         return i40e_sync_vsi_filters(vsi);
2177 }
2178
2179 /**
2180  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2181  * @netdev: network interface to be adjusted
2182  * @vid: vlan id to be added
2183  *
2184  * net_device_ops implementation for adding vlan ids
2185  **/
2186 #ifdef I40E_FCOE
2187 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2188                          __always_unused __be16 proto, u16 vid)
2189 #else
2190 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2191                                 __always_unused __be16 proto, u16 vid)
2192 #endif
2193 {
2194         struct i40e_netdev_priv *np = netdev_priv(netdev);
2195         struct i40e_vsi *vsi = np->vsi;
2196         int ret = 0;
2197
2198         if (vid > 4095)
2199                 return -EINVAL;
2200
2201         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2202
2203         /* If the network stack called us with vid = 0 then
2204          * it is asking to receive priority tagged packets with
2205          * vlan id 0.  Our HW receives them by default when configured
2206          * to receive untagged packets so there is no need to add an
2207          * extra filter for vlan 0 tagged packets.
2208          */
2209         if (vid)
2210                 ret = i40e_vsi_add_vlan(vsi, vid);
2211
2212         if (!ret && (vid < VLAN_N_VID))
2213                 set_bit(vid, vsi->active_vlans);
2214
2215         return ret;
2216 }
2217
2218 /**
2219  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2220  * @netdev: network interface to be adjusted
2221  * @vid: vlan id to be removed
2222  *
2223  * net_device_ops implementation for removing vlan ids
2224  **/
2225 #ifdef I40E_FCOE
2226 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2227                           __always_unused __be16 proto, u16 vid)
2228 #else
2229 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2230                                  __always_unused __be16 proto, u16 vid)
2231 #endif
2232 {
2233         struct i40e_netdev_priv *np = netdev_priv(netdev);
2234         struct i40e_vsi *vsi = np->vsi;
2235
2236         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2237
2238         /* return code is ignored as there is nothing a user
2239          * can do about failure to remove and a log message was
2240          * already printed from the other function
2241          */
2242         i40e_vsi_kill_vlan(vsi, vid);
2243
2244         clear_bit(vid, vsi->active_vlans);
2245
2246         return 0;
2247 }
2248
2249 /**
2250  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2251  * @vsi: the vsi being brought back up
2252  **/
2253 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2254 {
2255         u16 vid;
2256
2257         if (!vsi->netdev)
2258                 return;
2259
2260         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2261
2262         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2263                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2264                                      vid);
2265 }
2266
2267 /**
2268  * i40e_vsi_add_pvid - Add pvid for the VSI
2269  * @vsi: the vsi being adjusted
2270  * @vid: the vlan id to set as a PVID
2271  **/
2272 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2273 {
2274         struct i40e_vsi_context ctxt;
2275         i40e_status aq_ret;
2276
2277         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2278         vsi->info.pvid = cpu_to_le16(vid);
2279         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2280                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2281                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2282
2283         ctxt.seid = vsi->seid;
2284         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2285         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2286         if (aq_ret) {
2287                 dev_info(&vsi->back->pdev->dev,
2288                          "%s: update vsi failed, aq_err=%d\n",
2289                          __func__, vsi->back->hw.aq.asq_last_status);
2290                 return -ENOENT;
2291         }
2292
2293         return 0;
2294 }
2295
2296 /**
2297  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2298  * @vsi: the vsi being adjusted
2299  *
2300  * Just use the vlan_rx_register() service to put it back to normal
2301  **/
2302 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2303 {
2304         i40e_vlan_stripping_disable(vsi);
2305
2306         vsi->info.pvid = 0;
2307 }
2308
2309 /**
2310  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2311  * @vsi: ptr to the VSI
2312  *
2313  * If this function returns with an error, then it's possible one or
2314  * more of the rings is populated (while the rest are not).  It is the
2315  * callers duty to clean those orphaned rings.
2316  *
2317  * Return 0 on success, negative on failure
2318  **/
2319 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2320 {
2321         int i, err = 0;
2322
2323         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2324                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2325
2326         return err;
2327 }
2328
2329 /**
2330  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2331  * @vsi: ptr to the VSI
2332  *
2333  * Free VSI's transmit software resources
2334  **/
2335 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2336 {
2337         int i;
2338
2339         if (!vsi->tx_rings)
2340                 return;
2341
2342         for (i = 0; i < vsi->num_queue_pairs; i++)
2343                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2344                         i40e_free_tx_resources(vsi->tx_rings[i]);
2345 }
2346
2347 /**
2348  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2349  * @vsi: ptr to the VSI
2350  *
2351  * If this function returns with an error, then it's possible one or
2352  * more of the rings is populated (while the rest are not).  It is the
2353  * callers duty to clean those orphaned rings.
2354  *
2355  * Return 0 on success, negative on failure
2356  **/
2357 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2358 {
2359         int i, err = 0;
2360
2361         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2362                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2363 #ifdef I40E_FCOE
2364         i40e_fcoe_setup_ddp_resources(vsi);
2365 #endif
2366         return err;
2367 }
2368
2369 /**
2370  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2371  * @vsi: ptr to the VSI
2372  *
2373  * Free all receive software resources
2374  **/
2375 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2376 {
2377         int i;
2378
2379         if (!vsi->rx_rings)
2380                 return;
2381
2382         for (i = 0; i < vsi->num_queue_pairs; i++)
2383                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2384                         i40e_free_rx_resources(vsi->rx_rings[i]);
2385 #ifdef I40E_FCOE
2386         i40e_fcoe_free_ddp_resources(vsi);
2387 #endif
2388 }
2389
2390 /**
2391  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2392  * @ring: The Tx ring to configure
2393  *
2394  * This enables/disables XPS for a given Tx descriptor ring
2395  * based on the TCs enabled for the VSI that ring belongs to.
2396  **/
2397 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2398 {
2399         struct i40e_vsi *vsi = ring->vsi;
2400         cpumask_var_t mask;
2401
2402         if (ring->q_vector && ring->netdev) {
2403                 /* Single TC mode enable XPS */
2404                 if (vsi->tc_config.numtc <= 1 &&
2405                     !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2406                         netif_set_xps_queue(ring->netdev,
2407                                             &ring->q_vector->affinity_mask,
2408                                             ring->queue_index);
2409                 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2410                         /* Disable XPS to allow selection based on TC */
2411                         bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2412                         netif_set_xps_queue(ring->netdev, mask,
2413                                             ring->queue_index);
2414                         free_cpumask_var(mask);
2415                 }
2416         }
2417 }
2418
2419 /**
2420  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2421  * @ring: The Tx ring to configure
2422  *
2423  * Configure the Tx descriptor ring in the HMC context.
2424  **/
2425 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2426 {
2427         struct i40e_vsi *vsi = ring->vsi;
2428         u16 pf_q = vsi->base_queue + ring->queue_index;
2429         struct i40e_hw *hw = &vsi->back->hw;
2430         struct i40e_hmc_obj_txq tx_ctx;
2431         i40e_status err = 0;
2432         u32 qtx_ctl = 0;
2433
2434         /* some ATR related tx ring init */
2435         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2436                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2437                 ring->atr_count = 0;
2438         } else {
2439                 ring->atr_sample_rate = 0;
2440         }
2441
2442         /* configure XPS */
2443         i40e_config_xps_tx_ring(ring);
2444
2445         /* clear the context structure first */
2446         memset(&tx_ctx, 0, sizeof(tx_ctx));
2447
2448         tx_ctx.new_context = 1;
2449         tx_ctx.base = (ring->dma / 128);
2450         tx_ctx.qlen = ring->count;
2451         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2452                                                I40E_FLAG_FD_ATR_ENABLED));
2453 #ifdef I40E_FCOE
2454         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2455 #endif
2456         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2457         /* FDIR VSI tx ring can still use RS bit and writebacks */
2458         if (vsi->type != I40E_VSI_FDIR)
2459                 tx_ctx.head_wb_ena = 1;
2460         tx_ctx.head_wb_addr = ring->dma +
2461                               (ring->count * sizeof(struct i40e_tx_desc));
2462
2463         /* As part of VSI creation/update, FW allocates certain
2464          * Tx arbitration queue sets for each TC enabled for
2465          * the VSI. The FW returns the handles to these queue
2466          * sets as part of the response buffer to Add VSI,
2467          * Update VSI, etc. AQ commands. It is expected that
2468          * these queue set handles be associated with the Tx
2469          * queues by the driver as part of the TX queue context
2470          * initialization. This has to be done regardless of
2471          * DCB as by default everything is mapped to TC0.
2472          */
2473         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2474         tx_ctx.rdylist_act = 0;
2475
2476         /* clear the context in the HMC */
2477         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2478         if (err) {
2479                 dev_info(&vsi->back->pdev->dev,
2480                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2481                          ring->queue_index, pf_q, err);
2482                 return -ENOMEM;
2483         }
2484
2485         /* set the context in the HMC */
2486         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2487         if (err) {
2488                 dev_info(&vsi->back->pdev->dev,
2489                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2490                          ring->queue_index, pf_q, err);
2491                 return -ENOMEM;
2492         }
2493
2494         /* Now associate this queue with this PCI function */
2495         if (vsi->type == I40E_VSI_VMDQ2) {
2496                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2497                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2498                            I40E_QTX_CTL_VFVM_INDX_MASK;
2499         } else {
2500                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2501         }
2502
2503         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2504                     I40E_QTX_CTL_PF_INDX_MASK);
2505         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2506         i40e_flush(hw);
2507
2508         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2509
2510         /* cache tail off for easier writes later */
2511         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2512
2513         return 0;
2514 }
2515
2516 /**
2517  * i40e_configure_rx_ring - Configure a receive ring context
2518  * @ring: The Rx ring to configure
2519  *
2520  * Configure the Rx descriptor ring in the HMC context.
2521  **/
2522 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2523 {
2524         struct i40e_vsi *vsi = ring->vsi;
2525         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2526         u16 pf_q = vsi->base_queue + ring->queue_index;
2527         struct i40e_hw *hw = &vsi->back->hw;
2528         struct i40e_hmc_obj_rxq rx_ctx;
2529         i40e_status err = 0;
2530
2531         ring->state = 0;
2532
2533         /* clear the context structure first */
2534         memset(&rx_ctx, 0, sizeof(rx_ctx));
2535
2536         ring->rx_buf_len = vsi->rx_buf_len;
2537         ring->rx_hdr_len = vsi->rx_hdr_len;
2538
2539         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2540         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2541
2542         rx_ctx.base = (ring->dma / 128);
2543         rx_ctx.qlen = ring->count;
2544
2545         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2546                 set_ring_16byte_desc_enabled(ring);
2547                 rx_ctx.dsize = 0;
2548         } else {
2549                 rx_ctx.dsize = 1;
2550         }
2551
2552         rx_ctx.dtype = vsi->dtype;
2553         if (vsi->dtype) {
2554                 set_ring_ps_enabled(ring);
2555                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2556                                   I40E_RX_SPLIT_IP      |
2557                                   I40E_RX_SPLIT_TCP_UDP |
2558                                   I40E_RX_SPLIT_SCTP;
2559         } else {
2560                 rx_ctx.hsplit_0 = 0;
2561         }
2562
2563         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2564                                   (chain_len * ring->rx_buf_len));
2565         if (hw->revision_id == 0)
2566                 rx_ctx.lrxqthresh = 0;
2567         else
2568                 rx_ctx.lrxqthresh = 2;
2569         rx_ctx.crcstrip = 1;
2570         rx_ctx.l2tsel = 1;
2571         rx_ctx.showiv = 1;
2572 #ifdef I40E_FCOE
2573         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2574 #endif
2575         /* set the prefena field to 1 because the manual says to */
2576         rx_ctx.prefena = 1;
2577
2578         /* clear the context in the HMC */
2579         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2580         if (err) {
2581                 dev_info(&vsi->back->pdev->dev,
2582                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2583                          ring->queue_index, pf_q, err);
2584                 return -ENOMEM;
2585         }
2586
2587         /* set the context in the HMC */
2588         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2589         if (err) {
2590                 dev_info(&vsi->back->pdev->dev,
2591                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2592                          ring->queue_index, pf_q, err);
2593                 return -ENOMEM;
2594         }
2595
2596         /* cache tail for quicker writes, and clear the reg before use */
2597         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2598         writel(0, ring->tail);
2599
2600         if (ring_is_ps_enabled(ring)) {
2601                 i40e_alloc_rx_headers(ring);
2602                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2603         } else {
2604                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2605         }
2606
2607         return 0;
2608 }
2609
2610 /**
2611  * i40e_vsi_configure_tx - Configure the VSI for Tx
2612  * @vsi: VSI structure describing this set of rings and resources
2613  *
2614  * Configure the Tx VSI for operation.
2615  **/
2616 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2617 {
2618         int err = 0;
2619         u16 i;
2620
2621         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2622                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2623
2624         return err;
2625 }
2626
2627 /**
2628  * i40e_vsi_configure_rx - Configure the VSI for Rx
2629  * @vsi: the VSI being configured
2630  *
2631  * Configure the Rx VSI for operation.
2632  **/
2633 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2634 {
2635         int err = 0;
2636         u16 i;
2637
2638         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2639                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2640                                + ETH_FCS_LEN + VLAN_HLEN;
2641         else
2642                 vsi->max_frame = I40E_RXBUFFER_2048;
2643
2644         /* figure out correct receive buffer length */
2645         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2646                                     I40E_FLAG_RX_PS_ENABLED)) {
2647         case I40E_FLAG_RX_1BUF_ENABLED:
2648                 vsi->rx_hdr_len = 0;
2649                 vsi->rx_buf_len = vsi->max_frame;
2650                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2651                 break;
2652         case I40E_FLAG_RX_PS_ENABLED:
2653                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2654                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2655                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2656                 break;
2657         default:
2658                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2659                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2660                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2661                 break;
2662         }
2663
2664 #ifdef I40E_FCOE
2665         /* setup rx buffer for FCoE */
2666         if ((vsi->type == I40E_VSI_FCOE) &&
2667             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2668                 vsi->rx_hdr_len = 0;
2669                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2670                 vsi->max_frame = I40E_RXBUFFER_3072;
2671                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2672         }
2673
2674 #endif /* I40E_FCOE */
2675         /* round up for the chip's needs */
2676         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2677                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2678         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2679                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2680
2681         /* set up individual rings */
2682         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2683                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2684
2685         return err;
2686 }
2687
2688 /**
2689  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2690  * @vsi: ptr to the VSI
2691  **/
2692 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2693 {
2694         struct i40e_ring *tx_ring, *rx_ring;
2695         u16 qoffset, qcount;
2696         int i, n;
2697
2698         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2699                 /* Reset the TC information */
2700                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2701                         rx_ring = vsi->rx_rings[i];
2702                         tx_ring = vsi->tx_rings[i];
2703                         rx_ring->dcb_tc = 0;
2704                         tx_ring->dcb_tc = 0;
2705                 }
2706         }
2707
2708         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2709                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2710                         continue;
2711
2712                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2713                 qcount = vsi->tc_config.tc_info[n].qcount;
2714                 for (i = qoffset; i < (qoffset + qcount); i++) {
2715                         rx_ring = vsi->rx_rings[i];
2716                         tx_ring = vsi->tx_rings[i];
2717                         rx_ring->dcb_tc = n;
2718                         tx_ring->dcb_tc = n;
2719                 }
2720         }
2721 }
2722
2723 /**
2724  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2725  * @vsi: ptr to the VSI
2726  **/
2727 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2728 {
2729         if (vsi->netdev)
2730                 i40e_set_rx_mode(vsi->netdev);
2731 }
2732
2733 /**
2734  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2735  * @vsi: Pointer to the targeted VSI
2736  *
2737  * This function replays the hlist on the hw where all the SB Flow Director
2738  * filters were saved.
2739  **/
2740 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2741 {
2742         struct i40e_fdir_filter *filter;
2743         struct i40e_pf *pf = vsi->back;
2744         struct hlist_node *node;
2745
2746         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2747                 return;
2748
2749         hlist_for_each_entry_safe(filter, node,
2750                                   &pf->fdir_filter_list, fdir_node) {
2751                 i40e_add_del_fdir(vsi, filter, true);
2752         }
2753 }
2754
2755 /**
2756  * i40e_vsi_configure - Set up the VSI for action
2757  * @vsi: the VSI being configured
2758  **/
2759 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2760 {
2761         int err;
2762
2763         i40e_set_vsi_rx_mode(vsi);
2764         i40e_restore_vlan(vsi);
2765         i40e_vsi_config_dcb_rings(vsi);
2766         err = i40e_vsi_configure_tx(vsi);
2767         if (!err)
2768                 err = i40e_vsi_configure_rx(vsi);
2769
2770         return err;
2771 }
2772
2773 /**
2774  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2775  * @vsi: the VSI being configured
2776  **/
2777 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2778 {
2779         struct i40e_pf *pf = vsi->back;
2780         struct i40e_q_vector *q_vector;
2781         struct i40e_hw *hw = &pf->hw;
2782         u16 vector;
2783         int i, q;
2784         u32 val;
2785         u32 qp;
2786
2787         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2788          * and PFINT_LNKLSTn registers, e.g.:
2789          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2790          */
2791         qp = vsi->base_queue;
2792         vector = vsi->base_vector;
2793         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2794                 q_vector = vsi->q_vectors[i];
2795                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2796                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2797                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2798                      q_vector->rx.itr);
2799                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2800                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2801                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2802                      q_vector->tx.itr);
2803
2804                 /* Linked list for the queuepairs assigned to this vector */
2805                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2806                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2807                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2808                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2809                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2810                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2811                               (I40E_QUEUE_TYPE_TX
2812                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2813
2814                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2815
2816                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2817                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2818                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2819                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2820                               (I40E_QUEUE_TYPE_RX
2821                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2822
2823                         /* Terminate the linked list */
2824                         if (q == (q_vector->num_ringpairs - 1))
2825                                 val |= (I40E_QUEUE_END_OF_LIST
2826                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2827
2828                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2829                         qp++;
2830                 }
2831         }
2832
2833         i40e_flush(hw);
2834 }
2835
2836 /**
2837  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2838  * @hw: ptr to the hardware info
2839  **/
2840 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2841 {
2842         struct i40e_hw *hw = &pf->hw;
2843         u32 val;
2844
2845         /* clear things first */
2846         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2847         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2848
2849         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2850               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2851               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2852               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2853               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2854               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2855               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2856               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2857
2858         if (pf->flags & I40E_FLAG_PTP)
2859                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2860
2861         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2862
2863         /* SW_ITR_IDX = 0, but don't change INTENA */
2864         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2865                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2866
2867         /* OTHER_ITR_IDX = 0 */
2868         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2869 }
2870
2871 /**
2872  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2873  * @vsi: the VSI being configured
2874  **/
2875 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2876 {
2877         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2878         struct i40e_pf *pf = vsi->back;
2879         struct i40e_hw *hw = &pf->hw;
2880         u32 val;
2881
2882         /* set the ITR configuration */
2883         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2884         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2885         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2886         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2887         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2888         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2889
2890         i40e_enable_misc_int_causes(pf);
2891
2892         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2893         wr32(hw, I40E_PFINT_LNKLST0, 0);
2894
2895         /* Associate the queue pair to the vector and enable the queue int */
2896         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2897               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2898               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2899
2900         wr32(hw, I40E_QINT_RQCTL(0), val);
2901
2902         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2903               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2904               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2905
2906         wr32(hw, I40E_QINT_TQCTL(0), val);
2907         i40e_flush(hw);
2908 }
2909
2910 /**
2911  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2912  * @pf: board private structure
2913  **/
2914 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2915 {
2916         struct i40e_hw *hw = &pf->hw;
2917
2918         wr32(hw, I40E_PFINT_DYN_CTL0,
2919              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2920         i40e_flush(hw);
2921 }
2922
2923 /**
2924  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2925  * @pf: board private structure
2926  **/
2927 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2928 {
2929         struct i40e_hw *hw = &pf->hw;
2930         u32 val;
2931
2932         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2933               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2934               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2935
2936         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2937         i40e_flush(hw);
2938 }
2939
2940 /**
2941  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2942  * @vsi: pointer to a vsi
2943  * @vector: enable a particular Hw Interrupt vector
2944  **/
2945 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2946 {
2947         struct i40e_pf *pf = vsi->back;
2948         struct i40e_hw *hw = &pf->hw;
2949         u32 val;
2950
2951         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2952               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2953               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2954         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2955         /* skip the flush */
2956 }
2957
2958 /**
2959  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2960  * @vsi: pointer to a vsi
2961  * @vector: disable a particular Hw Interrupt vector
2962  **/
2963 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2964 {
2965         struct i40e_pf *pf = vsi->back;
2966         struct i40e_hw *hw = &pf->hw;
2967         u32 val;
2968
2969         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2970         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2971         i40e_flush(hw);
2972 }
2973
2974 /**
2975  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2976  * @irq: interrupt number
2977  * @data: pointer to a q_vector
2978  **/
2979 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2980 {
2981         struct i40e_q_vector *q_vector = data;
2982
2983         if (!q_vector->tx.ring && !q_vector->rx.ring)
2984                 return IRQ_HANDLED;
2985
2986         napi_schedule(&q_vector->napi);
2987
2988         return IRQ_HANDLED;
2989 }
2990
2991 /**
2992  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2993  * @vsi: the VSI being configured
2994  * @basename: name for the vector
2995  *
2996  * Allocates MSI-X vectors and requests interrupts from the kernel.
2997  **/
2998 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2999 {
3000         int q_vectors = vsi->num_q_vectors;
3001         struct i40e_pf *pf = vsi->back;
3002         int base = vsi->base_vector;
3003         int rx_int_idx = 0;
3004         int tx_int_idx = 0;
3005         int vector, err;
3006
3007         for (vector = 0; vector < q_vectors; vector++) {
3008                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3009
3010                 if (q_vector->tx.ring && q_vector->rx.ring) {
3011                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3012                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3013                         tx_int_idx++;
3014                 } else if (q_vector->rx.ring) {
3015                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3016                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3017                 } else if (q_vector->tx.ring) {
3018                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3019                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3020                 } else {
3021                         /* skip this unused q_vector */
3022                         continue;
3023                 }
3024                 err = request_irq(pf->msix_entries[base + vector].vector,
3025                                   vsi->irq_handler,
3026                                   0,
3027                                   q_vector->name,
3028                                   q_vector);
3029                 if (err) {
3030                         dev_info(&pf->pdev->dev,
3031                                  "%s: request_irq failed, error: %d\n",
3032                                  __func__, err);
3033                         goto free_queue_irqs;
3034                 }
3035                 /* assign the mask for this irq */
3036                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3037                                       &q_vector->affinity_mask);
3038         }
3039
3040         vsi->irqs_ready = true;
3041         return 0;
3042
3043 free_queue_irqs:
3044         while (vector) {
3045                 vector--;
3046                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3047                                       NULL);
3048                 free_irq(pf->msix_entries[base + vector].vector,
3049                          &(vsi->q_vectors[vector]));
3050         }
3051         return err;
3052 }
3053
3054 /**
3055  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3056  * @vsi: the VSI being un-configured
3057  **/
3058 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3059 {
3060         struct i40e_pf *pf = vsi->back;
3061         struct i40e_hw *hw = &pf->hw;
3062         int base = vsi->base_vector;
3063         int i;
3064
3065         for (i = 0; i < vsi->num_queue_pairs; i++) {
3066                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3067                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3068         }
3069
3070         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3071                 for (i = vsi->base_vector;
3072                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3073                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3074
3075                 i40e_flush(hw);
3076                 for (i = 0; i < vsi->num_q_vectors; i++)
3077                         synchronize_irq(pf->msix_entries[i + base].vector);
3078         } else {
3079                 /* Legacy and MSI mode - this stops all interrupt handling */
3080                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3081                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3082                 i40e_flush(hw);
3083                 synchronize_irq(pf->pdev->irq);
3084         }
3085 }
3086
3087 /**
3088  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3089  * @vsi: the VSI being configured
3090  **/
3091 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3092 {
3093         struct i40e_pf *pf = vsi->back;
3094         int i;
3095
3096         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3097                 for (i = vsi->base_vector;
3098                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3099                         i40e_irq_dynamic_enable(vsi, i);
3100         } else {
3101                 i40e_irq_dynamic_enable_icr0(pf);
3102         }
3103
3104         i40e_flush(&pf->hw);
3105         return 0;
3106 }
3107
3108 /**
3109  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3110  * @pf: board private structure
3111  **/
3112 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3113 {
3114         /* Disable ICR 0 */
3115         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3116         i40e_flush(&pf->hw);
3117 }
3118
3119 /**
3120  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3121  * @irq: interrupt number
3122  * @data: pointer to a q_vector
3123  *
3124  * This is the handler used for all MSI/Legacy interrupts, and deals
3125  * with both queue and non-queue interrupts.  This is also used in
3126  * MSIX mode to handle the non-queue interrupts.
3127  **/
3128 static irqreturn_t i40e_intr(int irq, void *data)
3129 {
3130         struct i40e_pf *pf = (struct i40e_pf *)data;
3131         struct i40e_hw *hw = &pf->hw;
3132         irqreturn_t ret = IRQ_NONE;
3133         u32 icr0, icr0_remaining;
3134         u32 val, ena_mask;
3135
3136         icr0 = rd32(hw, I40E_PFINT_ICR0);
3137         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3138
3139         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3140         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3141                 goto enable_intr;
3142
3143         /* if interrupt but no bits showing, must be SWINT */
3144         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3145             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3146                 pf->sw_int_count++;
3147
3148         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3149         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3150
3151                 /* temporarily disable queue cause for NAPI processing */
3152                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3153                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3154                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3155
3156                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3157                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3158                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3159
3160                 if (!test_bit(__I40E_DOWN, &pf->state))
3161                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3162         }
3163
3164         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3165                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3166                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3167         }
3168
3169         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3170                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3171                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3172         }
3173
3174         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3175                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3176                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3177         }
3178
3179         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3180                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3181                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3182                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3183                 val = rd32(hw, I40E_GLGEN_RSTAT);
3184                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3185                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3186                 if (val == I40E_RESET_CORER) {
3187                         pf->corer_count++;
3188                 } else if (val == I40E_RESET_GLOBR) {
3189                         pf->globr_count++;
3190                 } else if (val == I40E_RESET_EMPR) {
3191                         pf->empr_count++;
3192                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3193                 }
3194         }
3195
3196         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3197                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3198                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3199         }
3200
3201         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3202                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3203
3204                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3205                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3206                         i40e_ptp_tx_hwtstamp(pf);
3207                 }
3208         }
3209
3210         /* If a critical error is pending we have no choice but to reset the
3211          * device.
3212          * Report and mask out any remaining unexpected interrupts.
3213          */
3214         icr0_remaining = icr0 & ena_mask;
3215         if (icr0_remaining) {
3216                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3217                          icr0_remaining);
3218                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3219                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3220                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3221                         dev_info(&pf->pdev->dev, "device will be reset\n");
3222                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3223                         i40e_service_event_schedule(pf);
3224                 }
3225                 ena_mask &= ~icr0_remaining;
3226         }
3227         ret = IRQ_HANDLED;
3228
3229 enable_intr:
3230         /* re-enable interrupt causes */
3231         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3232         if (!test_bit(__I40E_DOWN, &pf->state)) {
3233                 i40e_service_event_schedule(pf);
3234                 i40e_irq_dynamic_enable_icr0(pf);
3235         }
3236
3237         return ret;
3238 }
3239
3240 /**
3241  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3242  * @tx_ring:  tx ring to clean
3243  * @budget:   how many cleans we're allowed
3244  *
3245  * Returns true if there's any budget left (e.g. the clean is finished)
3246  **/
3247 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3248 {
3249         struct i40e_vsi *vsi = tx_ring->vsi;
3250         u16 i = tx_ring->next_to_clean;
3251         struct i40e_tx_buffer *tx_buf;
3252         struct i40e_tx_desc *tx_desc;
3253
3254         tx_buf = &tx_ring->tx_bi[i];
3255         tx_desc = I40E_TX_DESC(tx_ring, i);
3256         i -= tx_ring->count;
3257
3258         do {
3259                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3260
3261                 /* if next_to_watch is not set then there is no work pending */
3262                 if (!eop_desc)
3263                         break;
3264
3265                 /* prevent any other reads prior to eop_desc */
3266                 read_barrier_depends();
3267
3268                 /* if the descriptor isn't done, no work yet to do */
3269                 if (!(eop_desc->cmd_type_offset_bsz &
3270                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3271                         break;
3272
3273                 /* clear next_to_watch to prevent false hangs */
3274                 tx_buf->next_to_watch = NULL;
3275
3276                 tx_desc->buffer_addr = 0;
3277                 tx_desc->cmd_type_offset_bsz = 0;
3278                 /* move past filter desc */
3279                 tx_buf++;
3280                 tx_desc++;
3281                 i++;
3282                 if (unlikely(!i)) {
3283                         i -= tx_ring->count;
3284                         tx_buf = tx_ring->tx_bi;
3285                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3286                 }
3287                 /* unmap skb header data */
3288                 dma_unmap_single(tx_ring->dev,
3289                                  dma_unmap_addr(tx_buf, dma),
3290                                  dma_unmap_len(tx_buf, len),
3291                                  DMA_TO_DEVICE);
3292                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3293                         kfree(tx_buf->raw_buf);
3294
3295                 tx_buf->raw_buf = NULL;
3296                 tx_buf->tx_flags = 0;
3297                 tx_buf->next_to_watch = NULL;
3298                 dma_unmap_len_set(tx_buf, len, 0);
3299                 tx_desc->buffer_addr = 0;
3300                 tx_desc->cmd_type_offset_bsz = 0;
3301
3302                 /* move us past the eop_desc for start of next FD desc */
3303                 tx_buf++;
3304                 tx_desc++;
3305                 i++;
3306                 if (unlikely(!i)) {
3307                         i -= tx_ring->count;
3308                         tx_buf = tx_ring->tx_bi;
3309                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3310                 }
3311
3312                 /* update budget accounting */
3313                 budget--;
3314         } while (likely(budget));
3315
3316         i += tx_ring->count;
3317         tx_ring->next_to_clean = i;
3318
3319         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3320                 i40e_irq_dynamic_enable(vsi,
3321                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3322         }
3323         return budget > 0;
3324 }
3325
3326 /**
3327  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3328  * @irq: interrupt number
3329  * @data: pointer to a q_vector
3330  **/
3331 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3332 {
3333         struct i40e_q_vector *q_vector = data;
3334         struct i40e_vsi *vsi;
3335
3336         if (!q_vector->tx.ring)
3337                 return IRQ_HANDLED;
3338
3339         vsi = q_vector->tx.ring->vsi;
3340         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3341
3342         return IRQ_HANDLED;
3343 }
3344
3345 /**
3346  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3347  * @vsi: the VSI being configured
3348  * @v_idx: vector index
3349  * @qp_idx: queue pair index
3350  **/
3351 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3352 {
3353         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3354         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3355         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3356
3357         tx_ring->q_vector = q_vector;
3358         tx_ring->next = q_vector->tx.ring;
3359         q_vector->tx.ring = tx_ring;
3360         q_vector->tx.count++;
3361
3362         rx_ring->q_vector = q_vector;
3363         rx_ring->next = q_vector->rx.ring;
3364         q_vector->rx.ring = rx_ring;
3365         q_vector->rx.count++;
3366 }
3367
3368 /**
3369  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3370  * @vsi: the VSI being configured
3371  *
3372  * This function maps descriptor rings to the queue-specific vectors
3373  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3374  * one vector per queue pair, but on a constrained vector budget, we
3375  * group the queue pairs as "efficiently" as possible.
3376  **/
3377 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3378 {
3379         int qp_remaining = vsi->num_queue_pairs;
3380         int q_vectors = vsi->num_q_vectors;
3381         int num_ringpairs;
3382         int v_start = 0;
3383         int qp_idx = 0;
3384
3385         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3386          * group them so there are multiple queues per vector.
3387          * It is also important to go through all the vectors available to be
3388          * sure that if we don't use all the vectors, that the remaining vectors
3389          * are cleared. This is especially important when decreasing the
3390          * number of queues in use.
3391          */
3392         for (; v_start < q_vectors; v_start++) {
3393                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3394
3395                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3396
3397                 q_vector->num_ringpairs = num_ringpairs;
3398
3399                 q_vector->rx.count = 0;
3400                 q_vector->tx.count = 0;
3401                 q_vector->rx.ring = NULL;
3402                 q_vector->tx.ring = NULL;
3403
3404                 while (num_ringpairs--) {
3405                         map_vector_to_qp(vsi, v_start, qp_idx);
3406                         qp_idx++;
3407                         qp_remaining--;
3408                 }
3409         }
3410 }
3411
3412 /**
3413  * i40e_vsi_request_irq - Request IRQ from the OS
3414  * @vsi: the VSI being configured
3415  * @basename: name for the vector
3416  **/
3417 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3418 {
3419         struct i40e_pf *pf = vsi->back;
3420         int err;
3421
3422         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3423                 err = i40e_vsi_request_irq_msix(vsi, basename);
3424         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3425                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3426                                   pf->int_name, pf);
3427         else
3428                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3429                                   pf->int_name, pf);
3430
3431         if (err)
3432                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3433
3434         return err;
3435 }
3436
3437 #ifdef CONFIG_NET_POLL_CONTROLLER
3438 /**
3439  * i40e_netpoll - A Polling 'interrupt'handler
3440  * @netdev: network interface device structure
3441  *
3442  * This is used by netconsole to send skbs without having to re-enable
3443  * interrupts.  It's not called while the normal interrupt routine is executing.
3444  **/
3445 #ifdef I40E_FCOE
3446 void i40e_netpoll(struct net_device *netdev)
3447 #else
3448 static void i40e_netpoll(struct net_device *netdev)
3449 #endif
3450 {
3451         struct i40e_netdev_priv *np = netdev_priv(netdev);
3452         struct i40e_vsi *vsi = np->vsi;
3453         struct i40e_pf *pf = vsi->back;
3454         int i;
3455
3456         /* if interface is down do nothing */
3457         if (test_bit(__I40E_DOWN, &vsi->state))
3458                 return;
3459
3460         pf->flags |= I40E_FLAG_IN_NETPOLL;
3461         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3462                 for (i = 0; i < vsi->num_q_vectors; i++)
3463                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3464         } else {
3465                 i40e_intr(pf->pdev->irq, netdev);
3466         }
3467         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3468 }
3469 #endif
3470
3471 /**
3472  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3473  * @pf: the PF being configured
3474  * @pf_q: the PF queue
3475  * @enable: enable or disable state of the queue
3476  *
3477  * This routine will wait for the given Tx queue of the PF to reach the
3478  * enabled or disabled state.
3479  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3480  * multiple retries; else will return 0 in case of success.
3481  **/
3482 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3483 {
3484         int i;
3485         u32 tx_reg;
3486
3487         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3488                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3489                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3490                         break;
3491
3492                 usleep_range(10, 20);
3493         }
3494         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3495                 return -ETIMEDOUT;
3496
3497         return 0;
3498 }
3499
3500 /**
3501  * i40e_vsi_control_tx - Start or stop a VSI's rings
3502  * @vsi: the VSI being configured
3503  * @enable: start or stop the rings
3504  **/
3505 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3506 {
3507         struct i40e_pf *pf = vsi->back;
3508         struct i40e_hw *hw = &pf->hw;
3509         int i, j, pf_q, ret = 0;
3510         u32 tx_reg;
3511
3512         pf_q = vsi->base_queue;
3513         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3514
3515                 /* warn the TX unit of coming changes */
3516                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3517                 if (!enable)
3518                         usleep_range(10, 20);
3519
3520                 for (j = 0; j < 50; j++) {
3521                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3522                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3523                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3524                                 break;
3525                         usleep_range(1000, 2000);
3526                 }
3527                 /* Skip if the queue is already in the requested state */
3528                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3529                         continue;
3530
3531                 /* turn on/off the queue */
3532                 if (enable) {
3533                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3534                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3535                 } else {
3536                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3537                 }
3538
3539                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3540                 /* No waiting for the Tx queue to disable */
3541                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3542                         continue;
3543
3544                 /* wait for the change to finish */
3545                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3546                 if (ret) {
3547                         dev_info(&pf->pdev->dev,
3548                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3549                                  __func__, vsi->seid, pf_q,
3550                                  (enable ? "en" : "dis"));
3551                         break;
3552                 }
3553         }
3554
3555         if (hw->revision_id == 0)
3556                 mdelay(50);
3557         return ret;
3558 }
3559
3560 /**
3561  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3562  * @pf: the PF being configured
3563  * @pf_q: the PF queue
3564  * @enable: enable or disable state of the queue
3565  *
3566  * This routine will wait for the given Rx queue of the PF to reach the
3567  * enabled or disabled state.
3568  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3569  * multiple retries; else will return 0 in case of success.
3570  **/
3571 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3572 {
3573         int i;
3574         u32 rx_reg;
3575
3576         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3577                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3578                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3579                         break;
3580
3581                 usleep_range(10, 20);
3582         }
3583         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3584                 return -ETIMEDOUT;
3585
3586         return 0;
3587 }
3588
3589 /**
3590  * i40e_vsi_control_rx - Start or stop a VSI's rings
3591  * @vsi: the VSI being configured
3592  * @enable: start or stop the rings
3593  **/
3594 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3595 {
3596         struct i40e_pf *pf = vsi->back;
3597         struct i40e_hw *hw = &pf->hw;
3598         int i, j, pf_q, ret = 0;
3599         u32 rx_reg;
3600
3601         pf_q = vsi->base_queue;
3602         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3603                 for (j = 0; j < 50; j++) {
3604                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3605                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3606                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3607                                 break;
3608                         usleep_range(1000, 2000);
3609                 }
3610
3611                 /* Skip if the queue is already in the requested state */
3612                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3613                         continue;
3614
3615                 /* turn on/off the queue */
3616                 if (enable)
3617                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3618                 else
3619                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3620                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3621
3622                 /* wait for the change to finish */
3623                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3624                 if (ret) {
3625                         dev_info(&pf->pdev->dev,
3626                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3627                                  __func__, vsi->seid, pf_q,
3628                                  (enable ? "en" : "dis"));
3629                         break;
3630                 }
3631         }
3632
3633         return ret;
3634 }
3635
3636 /**
3637  * i40e_vsi_control_rings - Start or stop a VSI's rings
3638  * @vsi: the VSI being configured
3639  * @enable: start or stop the rings
3640  **/
3641 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3642 {
3643         int ret = 0;
3644
3645         /* do rx first for enable and last for disable */
3646         if (request) {
3647                 ret = i40e_vsi_control_rx(vsi, request);
3648                 if (ret)
3649                         return ret;
3650                 ret = i40e_vsi_control_tx(vsi, request);
3651         } else {
3652                 /* Ignore return value, we need to shutdown whatever we can */
3653                 i40e_vsi_control_tx(vsi, request);
3654                 i40e_vsi_control_rx(vsi, request);
3655         }
3656
3657         return ret;
3658 }
3659
3660 /**
3661  * i40e_vsi_free_irq - Free the irq association with the OS
3662  * @vsi: the VSI being configured
3663  **/
3664 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3665 {
3666         struct i40e_pf *pf = vsi->back;
3667         struct i40e_hw *hw = &pf->hw;
3668         int base = vsi->base_vector;
3669         u32 val, qp;
3670         int i;
3671
3672         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3673                 if (!vsi->q_vectors)
3674                         return;
3675
3676                 if (!vsi->irqs_ready)
3677                         return;
3678
3679                 vsi->irqs_ready = false;
3680                 for (i = 0; i < vsi->num_q_vectors; i++) {
3681                         u16 vector = i + base;
3682
3683                         /* free only the irqs that were actually requested */
3684                         if (!vsi->q_vectors[i] ||
3685                             !vsi->q_vectors[i]->num_ringpairs)
3686                                 continue;
3687
3688                         /* clear the affinity_mask in the IRQ descriptor */
3689                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3690                                               NULL);
3691                         free_irq(pf->msix_entries[vector].vector,
3692                                  vsi->q_vectors[i]);
3693
3694                         /* Tear down the interrupt queue link list
3695                          *
3696                          * We know that they come in pairs and always
3697                          * the Rx first, then the Tx.  To clear the
3698                          * link list, stick the EOL value into the
3699                          * next_q field of the registers.
3700                          */
3701                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3702                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3703                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3704                         val |= I40E_QUEUE_END_OF_LIST
3705                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3706                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3707
3708                         while (qp != I40E_QUEUE_END_OF_LIST) {
3709                                 u32 next;
3710
3711                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3712
3713                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3714                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3715                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3716                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3717
3718                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3719                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3720
3721                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3722
3723                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3724
3725                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3726                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3727
3728                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3729                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3730                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3731                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3732
3733                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3734                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3735
3736                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3737                                 qp = next;
3738                         }
3739                 }
3740         } else {
3741                 free_irq(pf->pdev->irq, pf);
3742
3743                 val = rd32(hw, I40E_PFINT_LNKLST0);
3744                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3745                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3746                 val |= I40E_QUEUE_END_OF_LIST
3747                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3748                 wr32(hw, I40E_PFINT_LNKLST0, val);
3749
3750                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3751                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3752                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3753                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3754                          I40E_QINT_RQCTL_INTEVENT_MASK);
3755
3756                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3757                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3758
3759                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3760
3761                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3762
3763                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3764                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3765                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3766                          I40E_QINT_TQCTL_INTEVENT_MASK);
3767
3768                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3769                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3770
3771                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3772         }
3773 }
3774
3775 /**
3776  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3777  * @vsi: the VSI being configured
3778  * @v_idx: Index of vector to be freed
3779  *
3780  * This function frees the memory allocated to the q_vector.  In addition if
3781  * NAPI is enabled it will delete any references to the NAPI struct prior
3782  * to freeing the q_vector.
3783  **/
3784 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3785 {
3786         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3787         struct i40e_ring *ring;
3788
3789         if (!q_vector)
3790                 return;
3791
3792         /* disassociate q_vector from rings */
3793         i40e_for_each_ring(ring, q_vector->tx)
3794                 ring->q_vector = NULL;
3795
3796         i40e_for_each_ring(ring, q_vector->rx)
3797                 ring->q_vector = NULL;
3798
3799         /* only VSI w/ an associated netdev is set up w/ NAPI */
3800         if (vsi->netdev)
3801                 netif_napi_del(&q_vector->napi);
3802
3803         vsi->q_vectors[v_idx] = NULL;
3804
3805         kfree_rcu(q_vector, rcu);
3806 }
3807
3808 /**
3809  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3810  * @vsi: the VSI being un-configured
3811  *
3812  * This frees the memory allocated to the q_vectors and
3813  * deletes references to the NAPI struct.
3814  **/
3815 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3816 {
3817         int v_idx;
3818
3819         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3820                 i40e_free_q_vector(vsi, v_idx);
3821 }
3822
3823 /**
3824  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3825  * @pf: board private structure
3826  **/
3827 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3828 {
3829         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3830         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3831                 pci_disable_msix(pf->pdev);
3832                 kfree(pf->msix_entries);
3833                 pf->msix_entries = NULL;
3834         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3835                 pci_disable_msi(pf->pdev);
3836         }
3837         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3838 }
3839
3840 /**
3841  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3842  * @pf: board private structure
3843  *
3844  * We go through and clear interrupt specific resources and reset the structure
3845  * to pre-load conditions
3846  **/
3847 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3848 {
3849         int i;
3850
3851         i40e_stop_misc_vector(pf);
3852         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3853                 synchronize_irq(pf->msix_entries[0].vector);
3854                 free_irq(pf->msix_entries[0].vector, pf);
3855         }
3856
3857         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3858         for (i = 0; i < pf->num_alloc_vsi; i++)
3859                 if (pf->vsi[i])
3860                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3861         i40e_reset_interrupt_capability(pf);
3862 }
3863
3864 /**
3865  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3866  * @vsi: the VSI being configured
3867  **/
3868 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3869 {
3870         int q_idx;
3871
3872         if (!vsi->netdev)
3873                 return;
3874
3875         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3876                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3877 }
3878
3879 /**
3880  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3881  * @vsi: the VSI being configured
3882  **/
3883 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3884 {
3885         int q_idx;
3886
3887         if (!vsi->netdev)
3888                 return;
3889
3890         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3891                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3892 }
3893
3894 /**
3895  * i40e_vsi_close - Shut down a VSI
3896  * @vsi: the vsi to be quelled
3897  **/
3898 static void i40e_vsi_close(struct i40e_vsi *vsi)
3899 {
3900         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3901                 i40e_down(vsi);
3902         i40e_vsi_free_irq(vsi);
3903         i40e_vsi_free_tx_resources(vsi);
3904         i40e_vsi_free_rx_resources(vsi);
3905 }
3906
3907 /**
3908  * i40e_quiesce_vsi - Pause a given VSI
3909  * @vsi: the VSI being paused
3910  **/
3911 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3912 {
3913         if (test_bit(__I40E_DOWN, &vsi->state))
3914                 return;
3915
3916         /* No need to disable FCoE VSI when Tx suspended */
3917         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3918             vsi->type == I40E_VSI_FCOE) {
3919                 dev_dbg(&vsi->back->pdev->dev,
3920                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3921                          __func__, vsi->seid);
3922                 return;
3923         }
3924
3925         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3926         if (vsi->netdev && netif_running(vsi->netdev)) {
3927                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3928         } else {
3929                 i40e_vsi_close(vsi);
3930         }
3931 }
3932
3933 /**
3934  * i40e_unquiesce_vsi - Resume a given VSI
3935  * @vsi: the VSI being resumed
3936  **/
3937 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3938 {
3939         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3940                 return;
3941
3942         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3943         if (vsi->netdev && netif_running(vsi->netdev))
3944                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3945         else
3946                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3947 }
3948
3949 /**
3950  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3951  * @pf: the PF
3952  **/
3953 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3954 {
3955         int v;
3956
3957         for (v = 0; v < pf->num_alloc_vsi; v++) {
3958                 if (pf->vsi[v])
3959                         i40e_quiesce_vsi(pf->vsi[v]);
3960         }
3961 }
3962
3963 /**
3964  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3965  * @pf: the PF
3966  **/
3967 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3968 {
3969         int v;
3970
3971         for (v = 0; v < pf->num_alloc_vsi; v++) {
3972                 if (pf->vsi[v])
3973                         i40e_unquiesce_vsi(pf->vsi[v]);
3974         }
3975 }
3976
3977 #ifdef CONFIG_I40E_DCB
3978 /**
3979  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3980  * @vsi: the VSI being configured
3981  *
3982  * This function waits for the given VSI's Tx queues to be disabled.
3983  **/
3984 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3985 {
3986         struct i40e_pf *pf = vsi->back;
3987         int i, pf_q, ret;
3988
3989         pf_q = vsi->base_queue;
3990         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3991                 /* Check and wait for the disable status of the queue */
3992                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3993                 if (ret) {
3994                         dev_info(&pf->pdev->dev,
3995                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3996                                  __func__, vsi->seid, pf_q);
3997                         return ret;
3998                 }
3999         }
4000
4001         return 0;
4002 }
4003
4004 /**
4005  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4006  * @pf: the PF
4007  *
4008  * This function waits for the Tx queues to be in disabled state for all the
4009  * VSIs that are managed by this PF.
4010  **/
4011 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4012 {
4013         int v, ret = 0;
4014
4015         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4016                 /* No need to wait for FCoE VSI queues */
4017                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4018                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4019                         if (ret)
4020                                 break;
4021                 }
4022         }
4023
4024         return ret;
4025 }
4026
4027 #endif
4028 /**
4029  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4030  * @pf: pointer to pf
4031  *
4032  * Get TC map for ISCSI PF type that will include iSCSI TC
4033  * and LAN TC.
4034  **/
4035 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4036 {
4037         struct i40e_dcb_app_priority_table app;
4038         struct i40e_hw *hw = &pf->hw;
4039         u8 enabled_tc = 1; /* TC0 is always enabled */
4040         u8 tc, i;
4041         /* Get the iSCSI APP TLV */
4042         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4043
4044         for (i = 0; i < dcbcfg->numapps; i++) {
4045                 app = dcbcfg->app[i];
4046                 if (app.selector == I40E_APP_SEL_TCPIP &&
4047                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4048                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4049                         enabled_tc |= (1 << tc);
4050                         break;
4051                 }
4052         }
4053
4054         return enabled_tc;
4055 }
4056
4057 /**
4058  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4059  * @dcbcfg: the corresponding DCBx configuration structure
4060  *
4061  * Return the number of TCs from given DCBx configuration
4062  **/
4063 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4064 {
4065         u8 num_tc = 0;
4066         int i;
4067
4068         /* Scan the ETS Config Priority Table to find
4069          * traffic class enabled for a given priority
4070          * and use the traffic class index to get the
4071          * number of traffic classes enabled
4072          */
4073         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4074                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4075                         num_tc = dcbcfg->etscfg.prioritytable[i];
4076         }
4077
4078         /* Traffic class index starts from zero so
4079          * increment to return the actual count
4080          */
4081         return num_tc + 1;
4082 }
4083
4084 /**
4085  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4086  * @dcbcfg: the corresponding DCBx configuration structure
4087  *
4088  * Query the current DCB configuration and return the number of
4089  * traffic classes enabled from the given DCBX config
4090  **/
4091 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4092 {
4093         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4094         u8 enabled_tc = 1;
4095         u8 i;
4096
4097         for (i = 0; i < num_tc; i++)
4098                 enabled_tc |= 1 << i;
4099
4100         return enabled_tc;
4101 }
4102
4103 /**
4104  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4105  * @pf: PF being queried
4106  *
4107  * Return number of traffic classes enabled for the given PF
4108  **/
4109 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4110 {
4111         struct i40e_hw *hw = &pf->hw;
4112         u8 i, enabled_tc;
4113         u8 num_tc = 0;
4114         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4115
4116         /* If DCB is not enabled then always in single TC */
4117         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4118                 return 1;
4119
4120         /* SFP mode will be enabled for all TCs on port */
4121         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4122                 return i40e_dcb_get_num_tc(dcbcfg);
4123
4124         /* MFP mode return count of enabled TCs for this PF */
4125         if (pf->hw.func_caps.iscsi)
4126                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4127         else
4128                 return 1; /* Only TC0 */
4129
4130         /* At least have TC0 */
4131         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4132         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4133                 if (enabled_tc & (1 << i))
4134                         num_tc++;
4135         }
4136         return num_tc;
4137 }
4138
4139 /**
4140  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4141  * @pf: PF being queried
4142  *
4143  * Return a bitmap for first enabled traffic class for this PF.
4144  **/
4145 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4146 {
4147         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4148         u8 i = 0;
4149
4150         if (!enabled_tc)
4151                 return 0x1; /* TC0 */
4152
4153         /* Find the first enabled TC */
4154         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4155                 if (enabled_tc & (1 << i))
4156                         break;
4157         }
4158
4159         return 1 << i;
4160 }
4161
4162 /**
4163  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4164  * @pf: PF being queried
4165  *
4166  * Return a bitmap for enabled traffic classes for this PF.
4167  **/
4168 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4169 {
4170         /* If DCB is not enabled for this PF then just return default TC */
4171         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4172                 return i40e_pf_get_default_tc(pf);
4173
4174         /* SFP mode we want PF to be enabled for all TCs */
4175         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4176                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4177
4178         /* MFP enabled and iSCSI PF type */
4179         if (pf->hw.func_caps.iscsi)
4180                 return i40e_get_iscsi_tc_map(pf);
4181         else
4182                 return i40e_pf_get_default_tc(pf);
4183 }
4184
4185 /**
4186  * i40e_vsi_get_bw_info - Query VSI BW Information
4187  * @vsi: the VSI being queried
4188  *
4189  * Returns 0 on success, negative value on failure
4190  **/
4191 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4192 {
4193         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4194         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4195         struct i40e_pf *pf = vsi->back;
4196         struct i40e_hw *hw = &pf->hw;
4197         i40e_status aq_ret;
4198         u32 tc_bw_max;
4199         int i;
4200
4201         /* Get the VSI level BW configuration */
4202         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4203         if (aq_ret) {
4204                 dev_info(&pf->pdev->dev,
4205                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4206                          aq_ret, pf->hw.aq.asq_last_status);
4207                 return -EINVAL;
4208         }
4209
4210         /* Get the VSI level BW configuration per TC */
4211         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4212                                                   NULL);
4213         if (aq_ret) {
4214                 dev_info(&pf->pdev->dev,
4215                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4216                          aq_ret, pf->hw.aq.asq_last_status);
4217                 return -EINVAL;
4218         }
4219
4220         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4221                 dev_info(&pf->pdev->dev,
4222                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4223                          bw_config.tc_valid_bits,
4224                          bw_ets_config.tc_valid_bits);
4225                 /* Still continuing */
4226         }
4227
4228         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4229         vsi->bw_max_quanta = bw_config.max_bw;
4230         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4231                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4232         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4233                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4234                 vsi->bw_ets_limit_credits[i] =
4235                                         le16_to_cpu(bw_ets_config.credits[i]);
4236                 /* 3 bits out of 4 for each TC */
4237                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4238         }
4239
4240         return 0;
4241 }
4242
4243 /**
4244  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4245  * @vsi: the VSI being configured
4246  * @enabled_tc: TC bitmap
4247  * @bw_credits: BW shared credits per TC
4248  *
4249  * Returns 0 on success, negative value on failure
4250  **/
4251 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4252                                        u8 *bw_share)
4253 {
4254         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4255         i40e_status aq_ret;
4256         int i;
4257
4258         bw_data.tc_valid_bits = enabled_tc;
4259         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4260                 bw_data.tc_bw_credits[i] = bw_share[i];
4261
4262         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4263                                           NULL);
4264         if (aq_ret) {
4265                 dev_info(&vsi->back->pdev->dev,
4266                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4267                          vsi->back->hw.aq.asq_last_status);
4268                 return -EINVAL;
4269         }
4270
4271         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4272                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4273
4274         return 0;
4275 }
4276
4277 /**
4278  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4279  * @vsi: the VSI being configured
4280  * @enabled_tc: TC map to be enabled
4281  *
4282  **/
4283 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4284 {
4285         struct net_device *netdev = vsi->netdev;
4286         struct i40e_pf *pf = vsi->back;
4287         struct i40e_hw *hw = &pf->hw;
4288         u8 netdev_tc = 0;
4289         int i;
4290         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4291
4292         if (!netdev)
4293                 return;
4294
4295         if (!enabled_tc) {
4296                 netdev_reset_tc(netdev);
4297                 return;
4298         }
4299
4300         /* Set up actual enabled TCs on the VSI */
4301         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4302                 return;
4303
4304         /* set per TC queues for the VSI */
4305         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4306                 /* Only set TC queues for enabled tcs
4307                  *
4308                  * e.g. For a VSI that has TC0 and TC3 enabled the
4309                  * enabled_tc bitmap would be 0x00001001; the driver
4310                  * will set the numtc for netdev as 2 that will be
4311                  * referenced by the netdev layer as TC 0 and 1.
4312                  */
4313                 if (vsi->tc_config.enabled_tc & (1 << i))
4314                         netdev_set_tc_queue(netdev,
4315                                         vsi->tc_config.tc_info[i].netdev_tc,
4316                                         vsi->tc_config.tc_info[i].qcount,
4317                                         vsi->tc_config.tc_info[i].qoffset);
4318         }
4319
4320         /* Assign UP2TC map for the VSI */
4321         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4322                 /* Get the actual TC# for the UP */
4323                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4324                 /* Get the mapped netdev TC# for the UP */
4325                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4326                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4327         }
4328 }
4329
4330 /**
4331  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4332  * @vsi: the VSI being configured
4333  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4334  **/
4335 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4336                                       struct i40e_vsi_context *ctxt)
4337 {
4338         /* copy just the sections touched not the entire info
4339          * since not all sections are valid as returned by
4340          * update vsi params
4341          */
4342         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4343         memcpy(&vsi->info.queue_mapping,
4344                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4345         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4346                sizeof(vsi->info.tc_mapping));
4347 }
4348
4349 /**
4350  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4351  * @vsi: VSI to be configured
4352  * @enabled_tc: TC bitmap
4353  *
4354  * This configures a particular VSI for TCs that are mapped to the
4355  * given TC bitmap. It uses default bandwidth share for TCs across
4356  * VSIs to configure TC for a particular VSI.
4357  *
4358  * NOTE:
4359  * It is expected that the VSI queues have been quisced before calling
4360  * this function.
4361  **/
4362 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4363 {
4364         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4365         struct i40e_vsi_context ctxt;
4366         int ret = 0;
4367         int i;
4368
4369         /* Check if enabled_tc is same as existing or new TCs */
4370         if (vsi->tc_config.enabled_tc == enabled_tc)
4371                 return ret;
4372
4373         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4374         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4375                 if (enabled_tc & (1 << i))
4376                         bw_share[i] = 1;
4377         }
4378
4379         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4380         if (ret) {
4381                 dev_info(&vsi->back->pdev->dev,
4382                          "Failed configuring TC map %d for VSI %d\n",
4383                          enabled_tc, vsi->seid);
4384                 goto out;
4385         }
4386
4387         /* Update Queue Pairs Mapping for currently enabled UPs */
4388         ctxt.seid = vsi->seid;
4389         ctxt.pf_num = vsi->back->hw.pf_id;
4390         ctxt.vf_num = 0;
4391         ctxt.uplink_seid = vsi->uplink_seid;
4392         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4393         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4394
4395         /* Update the VSI after updating the VSI queue-mapping information */
4396         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4397         if (ret) {
4398                 dev_info(&vsi->back->pdev->dev,
4399                          "update vsi failed, aq_err=%d\n",
4400                          vsi->back->hw.aq.asq_last_status);
4401                 goto out;
4402         }
4403         /* update the local VSI info with updated queue map */
4404         i40e_vsi_update_queue_map(vsi, &ctxt);
4405         vsi->info.valid_sections = 0;
4406
4407         /* Update current VSI BW information */
4408         ret = i40e_vsi_get_bw_info(vsi);
4409         if (ret) {
4410                 dev_info(&vsi->back->pdev->dev,
4411                          "Failed updating vsi bw info, aq_err=%d\n",
4412                          vsi->back->hw.aq.asq_last_status);
4413                 goto out;
4414         }
4415
4416         /* Update the netdev TC setup */
4417         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4418 out:
4419         return ret;
4420 }
4421
4422 /**
4423  * i40e_veb_config_tc - Configure TCs for given VEB
4424  * @veb: given VEB
4425  * @enabled_tc: TC bitmap
4426  *
4427  * Configures given TC bitmap for VEB (switching) element
4428  **/
4429 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4430 {
4431         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4432         struct i40e_pf *pf = veb->pf;
4433         int ret = 0;
4434         int i;
4435
4436         /* No TCs or already enabled TCs just return */
4437         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4438                 return ret;
4439
4440         bw_data.tc_valid_bits = enabled_tc;
4441         /* bw_data.absolute_credits is not set (relative) */
4442
4443         /* Enable ETS TCs with equal BW Share for now */
4444         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4445                 if (enabled_tc & (1 << i))
4446                         bw_data.tc_bw_share_credits[i] = 1;
4447         }
4448
4449         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4450                                                    &bw_data, NULL);
4451         if (ret) {
4452                 dev_info(&pf->pdev->dev,
4453                          "veb bw config failed, aq_err=%d\n",
4454                          pf->hw.aq.asq_last_status);
4455                 goto out;
4456         }
4457
4458         /* Update the BW information */
4459         ret = i40e_veb_get_bw_info(veb);
4460         if (ret) {
4461                 dev_info(&pf->pdev->dev,
4462                          "Failed getting veb bw config, aq_err=%d\n",
4463                          pf->hw.aq.asq_last_status);
4464         }
4465
4466 out:
4467         return ret;
4468 }
4469
4470 #ifdef CONFIG_I40E_DCB
4471 /**
4472  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4473  * @pf: PF struct
4474  *
4475  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4476  * the caller would've quiesce all the VSIs before calling
4477  * this function
4478  **/
4479 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4480 {
4481         u8 tc_map = 0;
4482         int ret;
4483         u8 v;
4484
4485         /* Enable the TCs available on PF to all VEBs */
4486         tc_map = i40e_pf_get_tc_map(pf);
4487         for (v = 0; v < I40E_MAX_VEB; v++) {
4488                 if (!pf->veb[v])
4489                         continue;
4490                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4491                 if (ret) {
4492                         dev_info(&pf->pdev->dev,
4493                                  "Failed configuring TC for VEB seid=%d\n",
4494                                  pf->veb[v]->seid);
4495                         /* Will try to configure as many components */
4496                 }
4497         }
4498
4499         /* Update each VSI */
4500         for (v = 0; v < pf->num_alloc_vsi; v++) {
4501                 if (!pf->vsi[v])
4502                         continue;
4503
4504                 /* - Enable all TCs for the LAN VSI
4505 #ifdef I40E_FCOE
4506                  * - For FCoE VSI only enable the TC configured
4507                  *   as per the APP TLV
4508 #endif
4509                  * - For all others keep them at TC0 for now
4510                  */
4511                 if (v == pf->lan_vsi)
4512                         tc_map = i40e_pf_get_tc_map(pf);
4513                 else
4514                         tc_map = i40e_pf_get_default_tc(pf);
4515 #ifdef I40E_FCOE
4516                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4517                         tc_map = i40e_get_fcoe_tc_map(pf);
4518 #endif /* #ifdef I40E_FCOE */
4519
4520                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4521                 if (ret) {
4522                         dev_info(&pf->pdev->dev,
4523                                  "Failed configuring TC for VSI seid=%d\n",
4524                                  pf->vsi[v]->seid);
4525                         /* Will try to configure as many components */
4526                 } else {
4527                         /* Re-configure VSI vectors based on updated TC map */
4528                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4529                         if (pf->vsi[v]->netdev)
4530                                 i40e_dcbnl_set_all(pf->vsi[v]);
4531                 }
4532         }
4533 }
4534
4535 /**
4536  * i40e_resume_port_tx - Resume port Tx
4537  * @pf: PF struct
4538  *
4539  * Resume a port's Tx and issue a PF reset in case of failure to
4540  * resume.
4541  **/
4542 static int i40e_resume_port_tx(struct i40e_pf *pf)
4543 {
4544         struct i40e_hw *hw = &pf->hw;
4545         int ret;
4546
4547         ret = i40e_aq_resume_port_tx(hw, NULL);
4548         if (ret) {
4549                 dev_info(&pf->pdev->dev,
4550                          "AQ command Resume Port Tx failed = %d\n",
4551                           pf->hw.aq.asq_last_status);
4552                 /* Schedule PF reset to recover */
4553                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4554                 i40e_service_event_schedule(pf);
4555         }
4556
4557         return ret;
4558 }
4559
4560 /**
4561  * i40e_init_pf_dcb - Initialize DCB configuration
4562  * @pf: PF being configured
4563  *
4564  * Query the current DCB configuration and cache it
4565  * in the hardware structure
4566  **/
4567 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4568 {
4569         struct i40e_hw *hw = &pf->hw;
4570         int err = 0;
4571
4572         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4573         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4574             (pf->hw.aq.fw_maj_ver < 4))
4575                 goto out;
4576
4577         /* Get the initial DCB configuration */
4578         err = i40e_init_dcb(hw);
4579         if (!err) {
4580                 /* Device/Function is not DCBX capable */
4581                 if ((!hw->func_caps.dcb) ||
4582                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4583                         dev_info(&pf->pdev->dev,
4584                                  "DCBX offload is not supported or is disabled for this PF.\n");
4585
4586                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4587                                 goto out;
4588
4589                 } else {
4590                         /* When status is not DISABLED then DCBX in FW */
4591                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4592                                        DCB_CAP_DCBX_VER_IEEE;
4593
4594                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4595                         /* Enable DCB tagging only when more than one TC */
4596                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4597                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4598                         dev_dbg(&pf->pdev->dev,
4599                                 "DCBX offload is supported for this PF.\n");
4600                 }
4601         } else {
4602                 dev_info(&pf->pdev->dev,
4603                          "AQ Querying DCB configuration failed: aq_err %d\n",
4604                          pf->hw.aq.asq_last_status);
4605         }
4606
4607 out:
4608         return err;
4609 }
4610 #endif /* CONFIG_I40E_DCB */
4611 #define SPEED_SIZE 14
4612 #define FC_SIZE 8
4613 /**
4614  * i40e_print_link_message - print link up or down
4615  * @vsi: the VSI for which link needs a message
4616  */
4617 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4618 {
4619         char speed[SPEED_SIZE] = "Unknown";
4620         char fc[FC_SIZE] = "RX/TX";
4621
4622         if (!isup) {
4623                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4624                 return;
4625         }
4626
4627         /* Warn user if link speed on NPAR enabled partition is not at
4628          * least 10GB
4629          */
4630         if (vsi->back->hw.func_caps.npar_enable &&
4631             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4632              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4633                 netdev_warn(vsi->netdev,
4634                             "The partition detected link speed that is less than 10Gbps\n");
4635
4636         switch (vsi->back->hw.phy.link_info.link_speed) {
4637         case I40E_LINK_SPEED_40GB:
4638                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4639                 break;
4640         case I40E_LINK_SPEED_10GB:
4641                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4642                 break;
4643         case I40E_LINK_SPEED_1GB:
4644                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4645                 break;
4646         case I40E_LINK_SPEED_100MB:
4647                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4648                 break;
4649         default:
4650                 break;
4651         }
4652
4653         switch (vsi->back->hw.fc.current_mode) {
4654         case I40E_FC_FULL:
4655                 strlcpy(fc, "RX/TX", FC_SIZE);
4656                 break;
4657         case I40E_FC_TX_PAUSE:
4658                 strlcpy(fc, "TX", FC_SIZE);
4659                 break;
4660         case I40E_FC_RX_PAUSE:
4661                 strlcpy(fc, "RX", FC_SIZE);
4662                 break;
4663         default:
4664                 strlcpy(fc, "None", FC_SIZE);
4665                 break;
4666         }
4667
4668         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4669                     speed, fc);
4670 }
4671
4672 /**
4673  * i40e_up_complete - Finish the last steps of bringing up a connection
4674  * @vsi: the VSI being configured
4675  **/
4676 static int i40e_up_complete(struct i40e_vsi *vsi)
4677 {
4678         struct i40e_pf *pf = vsi->back;
4679         int err;
4680
4681         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4682                 i40e_vsi_configure_msix(vsi);
4683         else
4684                 i40e_configure_msi_and_legacy(vsi);
4685
4686         /* start rings */
4687         err = i40e_vsi_control_rings(vsi, true);
4688         if (err)
4689                 return err;
4690
4691         clear_bit(__I40E_DOWN, &vsi->state);
4692         i40e_napi_enable_all(vsi);
4693         i40e_vsi_enable_irq(vsi);
4694
4695         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4696             (vsi->netdev)) {
4697                 i40e_print_link_message(vsi, true);
4698                 netif_tx_start_all_queues(vsi->netdev);
4699                 netif_carrier_on(vsi->netdev);
4700         } else if (vsi->netdev) {
4701                 i40e_print_link_message(vsi, false);
4702                 /* need to check for qualified module here*/
4703                 if ((pf->hw.phy.link_info.link_info &
4704                         I40E_AQ_MEDIA_AVAILABLE) &&
4705                     (!(pf->hw.phy.link_info.an_info &
4706                         I40E_AQ_QUALIFIED_MODULE)))
4707                         netdev_err(vsi->netdev,
4708                                    "the driver failed to link because an unqualified module was detected.");
4709         }
4710
4711         /* replay FDIR SB filters */
4712         if (vsi->type == I40E_VSI_FDIR) {
4713                 /* reset fd counters */
4714                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4715                 if (pf->fd_tcp_rule > 0) {
4716                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4717                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4718                         pf->fd_tcp_rule = 0;
4719                 }
4720                 i40e_fdir_filter_restore(vsi);
4721         }
4722         i40e_service_event_schedule(pf);
4723
4724         return 0;
4725 }
4726
4727 /**
4728  * i40e_vsi_reinit_locked - Reset the VSI
4729  * @vsi: the VSI being configured
4730  *
4731  * Rebuild the ring structs after some configuration
4732  * has changed, e.g. MTU size.
4733  **/
4734 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4735 {
4736         struct i40e_pf *pf = vsi->back;
4737
4738         WARN_ON(in_interrupt());
4739         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4740                 usleep_range(1000, 2000);
4741         i40e_down(vsi);
4742
4743         /* Give a VF some time to respond to the reset.  The
4744          * two second wait is based upon the watchdog cycle in
4745          * the VF driver.
4746          */
4747         if (vsi->type == I40E_VSI_SRIOV)
4748                 msleep(2000);
4749         i40e_up(vsi);
4750         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4751 }
4752
4753 /**
4754  * i40e_up - Bring the connection back up after being down
4755  * @vsi: the VSI being configured
4756  **/
4757 int i40e_up(struct i40e_vsi *vsi)
4758 {
4759         int err;
4760
4761         err = i40e_vsi_configure(vsi);
4762         if (!err)
4763                 err = i40e_up_complete(vsi);
4764
4765         return err;
4766 }
4767
4768 /**
4769  * i40e_down - Shutdown the connection processing
4770  * @vsi: the VSI being stopped
4771  **/
4772 void i40e_down(struct i40e_vsi *vsi)
4773 {
4774         int i;
4775
4776         /* It is assumed that the caller of this function
4777          * sets the vsi->state __I40E_DOWN bit.
4778          */
4779         if (vsi->netdev) {
4780                 netif_carrier_off(vsi->netdev);
4781                 netif_tx_disable(vsi->netdev);
4782         }
4783         i40e_vsi_disable_irq(vsi);
4784         i40e_vsi_control_rings(vsi, false);
4785         i40e_napi_disable_all(vsi);
4786
4787         for (i = 0; i < vsi->num_queue_pairs; i++) {
4788                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4789                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4790         }
4791 }
4792
4793 /**
4794  * i40e_setup_tc - configure multiple traffic classes
4795  * @netdev: net device to configure
4796  * @tc: number of traffic classes to enable
4797  **/
4798 #ifdef I40E_FCOE
4799 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4800 #else
4801 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4802 #endif
4803 {
4804         struct i40e_netdev_priv *np = netdev_priv(netdev);
4805         struct i40e_vsi *vsi = np->vsi;
4806         struct i40e_pf *pf = vsi->back;
4807         u8 enabled_tc = 0;
4808         int ret = -EINVAL;
4809         int i;
4810
4811         /* Check if DCB enabled to continue */
4812         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4813                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4814                 goto exit;
4815         }
4816
4817         /* Check if MFP enabled */
4818         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4819                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4820                 goto exit;
4821         }
4822
4823         /* Check whether tc count is within enabled limit */
4824         if (tc > i40e_pf_get_num_tc(pf)) {
4825                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4826                 goto exit;
4827         }
4828
4829         /* Generate TC map for number of tc requested */
4830         for (i = 0; i < tc; i++)
4831                 enabled_tc |= (1 << i);
4832
4833         /* Requesting same TC configuration as already enabled */
4834         if (enabled_tc == vsi->tc_config.enabled_tc)
4835                 return 0;
4836
4837         /* Quiesce VSI queues */
4838         i40e_quiesce_vsi(vsi);
4839
4840         /* Configure VSI for enabled TCs */
4841         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4842         if (ret) {
4843                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4844                             vsi->seid);
4845                 goto exit;
4846         }
4847
4848         /* Unquiesce VSI */
4849         i40e_unquiesce_vsi(vsi);
4850
4851 exit:
4852         return ret;
4853 }
4854
4855 /**
4856  * i40e_open - Called when a network interface is made active
4857  * @netdev: network interface device structure
4858  *
4859  * The open entry point is called when a network interface is made
4860  * active by the system (IFF_UP).  At this point all resources needed
4861  * for transmit and receive operations are allocated, the interrupt
4862  * handler is registered with the OS, the netdev watchdog subtask is
4863  * enabled, and the stack is notified that the interface is ready.
4864  *
4865  * Returns 0 on success, negative value on failure
4866  **/
4867 int i40e_open(struct net_device *netdev)
4868 {
4869         struct i40e_netdev_priv *np = netdev_priv(netdev);
4870         struct i40e_vsi *vsi = np->vsi;
4871         struct i40e_pf *pf = vsi->back;
4872         int err;
4873
4874         /* disallow open during test or if eeprom is broken */
4875         if (test_bit(__I40E_TESTING, &pf->state) ||
4876             test_bit(__I40E_BAD_EEPROM, &pf->state))
4877                 return -EBUSY;
4878
4879         netif_carrier_off(netdev);
4880
4881         err = i40e_vsi_open(vsi);
4882         if (err)
4883                 return err;
4884
4885         /* configure global TSO hardware offload settings */
4886         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4887                                                        TCP_FLAG_FIN) >> 16);
4888         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4889                                                        TCP_FLAG_FIN |
4890                                                        TCP_FLAG_CWR) >> 16);
4891         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4892
4893 #ifdef CONFIG_I40E_VXLAN
4894         vxlan_get_rx_port(netdev);
4895 #endif
4896
4897         return 0;
4898 }
4899
4900 /**
4901  * i40e_vsi_open -
4902  * @vsi: the VSI to open
4903  *
4904  * Finish initialization of the VSI.
4905  *
4906  * Returns 0 on success, negative value on failure
4907  **/
4908 int i40e_vsi_open(struct i40e_vsi *vsi)
4909 {
4910         struct i40e_pf *pf = vsi->back;
4911         char int_name[I40E_INT_NAME_STR_LEN];
4912         int err;
4913
4914         /* allocate descriptors */
4915         err = i40e_vsi_setup_tx_resources(vsi);
4916         if (err)
4917                 goto err_setup_tx;
4918         err = i40e_vsi_setup_rx_resources(vsi);
4919         if (err)
4920                 goto err_setup_rx;
4921
4922         err = i40e_vsi_configure(vsi);
4923         if (err)
4924                 goto err_setup_rx;
4925
4926         if (vsi->netdev) {
4927                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4928                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4929                 err = i40e_vsi_request_irq(vsi, int_name);
4930                 if (err)
4931                         goto err_setup_rx;
4932
4933                 /* Notify the stack of the actual queue counts. */
4934                 err = netif_set_real_num_tx_queues(vsi->netdev,
4935                                                    vsi->num_queue_pairs);
4936                 if (err)
4937                         goto err_set_queues;
4938
4939                 err = netif_set_real_num_rx_queues(vsi->netdev,
4940                                                    vsi->num_queue_pairs);
4941                 if (err)
4942                         goto err_set_queues;
4943
4944         } else if (vsi->type == I40E_VSI_FDIR) {
4945                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4946                          dev_driver_string(&pf->pdev->dev),
4947                          dev_name(&pf->pdev->dev));
4948                 err = i40e_vsi_request_irq(vsi, int_name);
4949
4950         } else {
4951                 err = -EINVAL;
4952                 goto err_setup_rx;
4953         }
4954
4955         err = i40e_up_complete(vsi);
4956         if (err)
4957                 goto err_up_complete;
4958
4959         return 0;
4960
4961 err_up_complete:
4962         i40e_down(vsi);
4963 err_set_queues:
4964         i40e_vsi_free_irq(vsi);
4965 err_setup_rx:
4966         i40e_vsi_free_rx_resources(vsi);
4967 err_setup_tx:
4968         i40e_vsi_free_tx_resources(vsi);
4969         if (vsi == pf->vsi[pf->lan_vsi])
4970                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4971
4972         return err;
4973 }
4974
4975 /**
4976  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4977  * @pf: Pointer to pf
4978  *
4979  * This function destroys the hlist where all the Flow Director
4980  * filters were saved.
4981  **/
4982 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4983 {
4984         struct i40e_fdir_filter *filter;
4985         struct hlist_node *node2;
4986
4987         hlist_for_each_entry_safe(filter, node2,
4988                                   &pf->fdir_filter_list, fdir_node) {
4989                 hlist_del(&filter->fdir_node);
4990                 kfree(filter);
4991         }
4992         pf->fdir_pf_active_filters = 0;
4993 }
4994
4995 /**
4996  * i40e_close - Disables a network interface
4997  * @netdev: network interface device structure
4998  *
4999  * The close entry point is called when an interface is de-activated
5000  * by the OS.  The hardware is still under the driver's control, but
5001  * this netdev interface is disabled.
5002  *
5003  * Returns 0, this is not allowed to fail
5004  **/
5005 #ifdef I40E_FCOE
5006 int i40e_close(struct net_device *netdev)
5007 #else
5008 static int i40e_close(struct net_device *netdev)
5009 #endif
5010 {
5011         struct i40e_netdev_priv *np = netdev_priv(netdev);
5012         struct i40e_vsi *vsi = np->vsi;
5013
5014         i40e_vsi_close(vsi);
5015
5016         return 0;
5017 }
5018
5019 /**
5020  * i40e_do_reset - Start a PF or Core Reset sequence
5021  * @pf: board private structure
5022  * @reset_flags: which reset is requested
5023  *
5024  * The essential difference in resets is that the PF Reset
5025  * doesn't clear the packet buffers, doesn't reset the PE
5026  * firmware, and doesn't bother the other PFs on the chip.
5027  **/
5028 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5029 {
5030         u32 val;
5031
5032         WARN_ON(in_interrupt());
5033
5034         if (i40e_check_asq_alive(&pf->hw))
5035                 i40e_vc_notify_reset(pf);
5036
5037         /* do the biggest reset indicated */
5038         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5039
5040                 /* Request a Global Reset
5041                  *
5042                  * This will start the chip's countdown to the actual full
5043                  * chip reset event, and a warning interrupt to be sent
5044                  * to all PFs, including the requestor.  Our handler
5045                  * for the warning interrupt will deal with the shutdown
5046                  * and recovery of the switch setup.
5047                  */
5048                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5049                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5050                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5051                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5052
5053         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5054
5055                 /* Request a Core Reset
5056                  *
5057                  * Same as Global Reset, except does *not* include the MAC/PHY
5058                  */
5059                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5060                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5061                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5062                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5063                 i40e_flush(&pf->hw);
5064
5065         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5066
5067                 /* Request a PF Reset
5068                  *
5069                  * Resets only the PF-specific registers
5070                  *
5071                  * This goes directly to the tear-down and rebuild of
5072                  * the switch, since we need to do all the recovery as
5073                  * for the Core Reset.
5074                  */
5075                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5076                 i40e_handle_reset_warning(pf);
5077
5078         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5079                 int v;
5080
5081                 /* Find the VSI(s) that requested a re-init */
5082                 dev_info(&pf->pdev->dev,
5083                          "VSI reinit requested\n");
5084                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5085                         struct i40e_vsi *vsi = pf->vsi[v];
5086                         if (vsi != NULL &&
5087                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5088                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5089                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5090                         }
5091                 }
5092
5093                 /* no further action needed, so return now */
5094                 return;
5095         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5096                 int v;
5097
5098                 /* Find the VSI(s) that needs to be brought down */
5099                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5100                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5101                         struct i40e_vsi *vsi = pf->vsi[v];
5102                         if (vsi != NULL &&
5103                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5104                                 set_bit(__I40E_DOWN, &vsi->state);
5105                                 i40e_down(vsi);
5106                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5107                         }
5108                 }
5109
5110                 /* no further action needed, so return now */
5111                 return;
5112         } else {
5113                 dev_info(&pf->pdev->dev,
5114                          "bad reset request 0x%08x\n", reset_flags);
5115                 return;
5116         }
5117 }
5118
5119 #ifdef CONFIG_I40E_DCB
5120 /**
5121  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5122  * @pf: board private structure
5123  * @old_cfg: current DCB config
5124  * @new_cfg: new DCB config
5125  **/
5126 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5127                             struct i40e_dcbx_config *old_cfg,
5128                             struct i40e_dcbx_config *new_cfg)
5129 {
5130         bool need_reconfig = false;
5131
5132         /* Check if ETS configuration has changed */
5133         if (memcmp(&new_cfg->etscfg,
5134                    &old_cfg->etscfg,
5135                    sizeof(new_cfg->etscfg))) {
5136                 /* If Priority Table has changed reconfig is needed */
5137                 if (memcmp(&new_cfg->etscfg.prioritytable,
5138                            &old_cfg->etscfg.prioritytable,
5139                            sizeof(new_cfg->etscfg.prioritytable))) {
5140                         need_reconfig = true;
5141                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5142                 }
5143
5144                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5145                            &old_cfg->etscfg.tcbwtable,
5146                            sizeof(new_cfg->etscfg.tcbwtable)))
5147                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5148
5149                 if (memcmp(&new_cfg->etscfg.tsatable,
5150                            &old_cfg->etscfg.tsatable,
5151                            sizeof(new_cfg->etscfg.tsatable)))
5152                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5153         }
5154
5155         /* Check if PFC configuration has changed */
5156         if (memcmp(&new_cfg->pfc,
5157                    &old_cfg->pfc,
5158                    sizeof(new_cfg->pfc))) {
5159                 need_reconfig = true;
5160                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5161         }
5162
5163         /* Check if APP Table has changed */
5164         if (memcmp(&new_cfg->app,
5165                    &old_cfg->app,
5166                    sizeof(new_cfg->app))) {
5167                 need_reconfig = true;
5168                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5169         }
5170
5171         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5172                 need_reconfig);
5173         return need_reconfig;
5174 }
5175
5176 /**
5177  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5178  * @pf: board private structure
5179  * @e: event info posted on ARQ
5180  **/
5181 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5182                                   struct i40e_arq_event_info *e)
5183 {
5184         struct i40e_aqc_lldp_get_mib *mib =
5185                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5186         struct i40e_hw *hw = &pf->hw;
5187         struct i40e_dcbx_config tmp_dcbx_cfg;
5188         bool need_reconfig = false;
5189         int ret = 0;
5190         u8 type;
5191
5192         /* Not DCB capable or capability disabled */
5193         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5194                 return ret;
5195
5196         /* Ignore if event is not for Nearest Bridge */
5197         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5198                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5199         dev_dbg(&pf->pdev->dev,
5200                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5201         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5202                 return ret;
5203
5204         /* Check MIB Type and return if event for Remote MIB update */
5205         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5206         dev_dbg(&pf->pdev->dev,
5207                 "%s: LLDP event mib type %s\n", __func__,
5208                 type ? "remote" : "local");
5209         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5210                 /* Update the remote cached instance and return */
5211                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5212                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5213                                 &hw->remote_dcbx_config);
5214                 goto exit;
5215         }
5216
5217         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5218         /* Store the old configuration */
5219         memcpy(&tmp_dcbx_cfg, &hw->local_dcbx_config, sizeof(tmp_dcbx_cfg));
5220
5221         /* Reset the old DCBx configuration data */
5222         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5223         /* Get updated DCBX data from firmware */
5224         ret = i40e_get_dcb_config(&pf->hw);
5225         if (ret) {
5226                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5227                 goto exit;
5228         }
5229
5230         /* No change detected in DCBX configs */
5231         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5232                     sizeof(tmp_dcbx_cfg))) {
5233                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5234                 goto exit;
5235         }
5236
5237         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5238                                                &hw->local_dcbx_config);
5239
5240         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5241
5242         if (!need_reconfig)
5243                 goto exit;
5244
5245         /* Enable DCB tagging only when more than one TC */
5246         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5247                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5248         else
5249                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5250
5251         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5252         /* Reconfiguration needed quiesce all VSIs */
5253         i40e_pf_quiesce_all_vsi(pf);
5254
5255         /* Changes in configuration update VEB/VSI */
5256         i40e_dcb_reconfigure(pf);
5257
5258         ret = i40e_resume_port_tx(pf);
5259
5260         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5261         /* In case of error no point in resuming VSIs */
5262         if (ret)
5263                 goto exit;
5264
5265         /* Wait for the PF's Tx queues to be disabled */
5266         ret = i40e_pf_wait_txq_disabled(pf);
5267         if (ret) {
5268                 /* Schedule PF reset to recover */
5269                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5270                 i40e_service_event_schedule(pf);
5271         } else {
5272                 i40e_pf_unquiesce_all_vsi(pf);
5273         }
5274
5275 exit:
5276         return ret;
5277 }
5278 #endif /* CONFIG_I40E_DCB */
5279
5280 /**
5281  * i40e_do_reset_safe - Protected reset path for userland calls.
5282  * @pf: board private structure
5283  * @reset_flags: which reset is requested
5284  *
5285  **/
5286 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5287 {
5288         rtnl_lock();
5289         i40e_do_reset(pf, reset_flags);
5290         rtnl_unlock();
5291 }
5292
5293 /**
5294  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5295  * @pf: board private structure
5296  * @e: event info posted on ARQ
5297  *
5298  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5299  * and VF queues
5300  **/
5301 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5302                                            struct i40e_arq_event_info *e)
5303 {
5304         struct i40e_aqc_lan_overflow *data =
5305                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5306         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5307         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5308         struct i40e_hw *hw = &pf->hw;
5309         struct i40e_vf *vf;
5310         u16 vf_id;
5311
5312         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5313                 queue, qtx_ctl);
5314
5315         /* Queue belongs to VF, find the VF and issue VF reset */
5316         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5317             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5318                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5319                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5320                 vf_id -= hw->func_caps.vf_base_id;
5321                 vf = &pf->vf[vf_id];
5322                 i40e_vc_notify_vf_reset(vf);
5323                 /* Allow VF to process pending reset notification */
5324                 msleep(20);
5325                 i40e_reset_vf(vf, false);
5326         }
5327 }
5328
5329 /**
5330  * i40e_service_event_complete - Finish up the service event
5331  * @pf: board private structure
5332  **/
5333 static void i40e_service_event_complete(struct i40e_pf *pf)
5334 {
5335         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5336
5337         /* flush memory to make sure state is correct before next watchog */
5338         smp_mb__before_atomic();
5339         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5340 }
5341
5342 /**
5343  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5344  * @pf: board private structure
5345  **/
5346 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5347 {
5348         int val, fcnt_prog;
5349
5350         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5351         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5352         return fcnt_prog;
5353 }
5354
5355 /**
5356  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5357  * @pf: board private structure
5358  **/
5359 int i40e_get_current_fd_count(struct i40e_pf *pf)
5360 {
5361         int val, fcnt_prog;
5362         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5363         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5364                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5365                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5366         return fcnt_prog;
5367 }
5368
5369 /**
5370  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5371  * @pf: board private structure
5372  **/
5373 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5374 {
5375         u32 fcnt_prog, fcnt_avail;
5376
5377         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5378                 return;
5379
5380         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5381          * to re-enable
5382          */
5383         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5384         fcnt_avail = pf->fdir_pf_filter_count;
5385         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5386             (pf->fd_add_err == 0) ||
5387             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5388                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5389                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5390                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5391                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5392                 }
5393         }
5394         /* Wait for some more space to be available to turn on ATR */
5395         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5396                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5397                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5398                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5399                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5400                 }
5401         }
5402 }
5403
5404 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5405 /**
5406  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5407  * @pf: board private structure
5408  **/
5409 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5410 {
5411         int flush_wait_retry = 50;
5412         int reg;
5413
5414         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5415                 return;
5416
5417         if (time_after(jiffies, pf->fd_flush_timestamp +
5418                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5419                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5420                 pf->fd_flush_timestamp = jiffies;
5421                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5422                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5423                 /* flush all filters */
5424                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5425                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5426                 i40e_flush(&pf->hw);
5427                 pf->fd_flush_cnt++;
5428                 pf->fd_add_err = 0;
5429                 do {
5430                         /* Check FD flush status every 5-6msec */
5431                         usleep_range(5000, 6000);
5432                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5433                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5434                                 break;
5435                 } while (flush_wait_retry--);
5436                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5437                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5438                 } else {
5439                         /* replay sideband filters */
5440                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5441
5442                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5443                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5444                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5445                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5446                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5447                 }
5448         }
5449 }
5450
5451 /**
5452  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5453  * @pf: board private structure
5454  **/
5455 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5456 {
5457         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5458 }
5459
5460 /* We can see up to 256 filter programming desc in transit if the filters are
5461  * being applied really fast; before we see the first
5462  * filter miss error on Rx queue 0. Accumulating enough error messages before
5463  * reacting will make sure we don't cause flush too often.
5464  */
5465 #define I40E_MAX_FD_PROGRAM_ERROR 256
5466
5467 /**
5468  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5469  * @pf: board private structure
5470  **/
5471 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5472 {
5473
5474         /* if interface is down do nothing */
5475         if (test_bit(__I40E_DOWN, &pf->state))
5476                 return;
5477
5478         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5479                 return;
5480
5481         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5482             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5483             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5484                 i40e_fdir_flush_and_replay(pf);
5485
5486         i40e_fdir_check_and_reenable(pf);
5487
5488 }
5489
5490 /**
5491  * i40e_vsi_link_event - notify VSI of a link event
5492  * @vsi: vsi to be notified
5493  * @link_up: link up or down
5494  **/
5495 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5496 {
5497         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5498                 return;
5499
5500         switch (vsi->type) {
5501         case I40E_VSI_MAIN:
5502 #ifdef I40E_FCOE
5503         case I40E_VSI_FCOE:
5504 #endif
5505                 if (!vsi->netdev || !vsi->netdev_registered)
5506                         break;
5507
5508                 if (link_up) {
5509                         netif_carrier_on(vsi->netdev);
5510                         netif_tx_wake_all_queues(vsi->netdev);
5511                 } else {
5512                         netif_carrier_off(vsi->netdev);
5513                         netif_tx_stop_all_queues(vsi->netdev);
5514                 }
5515                 break;
5516
5517         case I40E_VSI_SRIOV:
5518         case I40E_VSI_VMDQ2:
5519         case I40E_VSI_CTRL:
5520         case I40E_VSI_MIRROR:
5521         default:
5522                 /* there is no notification for other VSIs */
5523                 break;
5524         }
5525 }
5526
5527 /**
5528  * i40e_veb_link_event - notify elements on the veb of a link event
5529  * @veb: veb to be notified
5530  * @link_up: link up or down
5531  **/
5532 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5533 {
5534         struct i40e_pf *pf;
5535         int i;
5536
5537         if (!veb || !veb->pf)
5538                 return;
5539         pf = veb->pf;
5540
5541         /* depth first... */
5542         for (i = 0; i < I40E_MAX_VEB; i++)
5543                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5544                         i40e_veb_link_event(pf->veb[i], link_up);
5545
5546         /* ... now the local VSIs */
5547         for (i = 0; i < pf->num_alloc_vsi; i++)
5548                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5549                         i40e_vsi_link_event(pf->vsi[i], link_up);
5550 }
5551
5552 /**
5553  * i40e_link_event - Update netif_carrier status
5554  * @pf: board private structure
5555  **/
5556 static void i40e_link_event(struct i40e_pf *pf)
5557 {
5558         bool new_link, old_link;
5559         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5560         u8 new_link_speed, old_link_speed;
5561
5562         /* set this to force the get_link_status call to refresh state */
5563         pf->hw.phy.get_link_info = true;
5564
5565         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5566         new_link = i40e_get_link_status(&pf->hw);
5567         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5568         new_link_speed = pf->hw.phy.link_info.link_speed;
5569
5570         if (new_link == old_link &&
5571             new_link_speed == old_link_speed &&
5572             (test_bit(__I40E_DOWN, &vsi->state) ||
5573              new_link == netif_carrier_ok(vsi->netdev)))
5574                 return;
5575
5576         if (!test_bit(__I40E_DOWN, &vsi->state))
5577                 i40e_print_link_message(vsi, new_link);
5578
5579         /* Notify the base of the switch tree connected to
5580          * the link.  Floating VEBs are not notified.
5581          */
5582         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5583                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5584         else
5585                 i40e_vsi_link_event(vsi, new_link);
5586
5587         if (pf->vf)
5588                 i40e_vc_notify_link_state(pf);
5589
5590         if (pf->flags & I40E_FLAG_PTP)
5591                 i40e_ptp_set_increment(pf);
5592 }
5593
5594 /**
5595  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5596  * @pf: board private structure
5597  *
5598  * Set the per-queue flags to request a check for stuck queues in the irq
5599  * clean functions, then force interrupts to be sure the irq clean is called.
5600  **/
5601 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5602 {
5603         int i, v;
5604
5605         /* If we're down or resetting, just bail */
5606         if (test_bit(__I40E_DOWN, &pf->state) ||
5607             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5608                 return;
5609
5610         /* for each VSI/netdev
5611          *     for each Tx queue
5612          *         set the check flag
5613          *     for each q_vector
5614          *         force an interrupt
5615          */
5616         for (v = 0; v < pf->num_alloc_vsi; v++) {
5617                 struct i40e_vsi *vsi = pf->vsi[v];
5618                 int armed = 0;
5619
5620                 if (!pf->vsi[v] ||
5621                     test_bit(__I40E_DOWN, &vsi->state) ||
5622                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5623                         continue;
5624
5625                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5626                         set_check_for_tx_hang(vsi->tx_rings[i]);
5627                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5628                                      &vsi->tx_rings[i]->state))
5629                                 armed++;
5630                 }
5631
5632                 if (armed) {
5633                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5634                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5635                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5636                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5637                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5638                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5639                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5640                         } else {
5641                                 u16 vec = vsi->base_vector - 1;
5642                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5643                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5644                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5645                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5646                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5647                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5648                                         wr32(&vsi->back->hw,
5649                                              I40E_PFINT_DYN_CTLN(vec), val);
5650                         }
5651                         i40e_flush(&vsi->back->hw);
5652                 }
5653         }
5654 }
5655
5656 /**
5657  * i40e_watchdog_subtask - periodic checks not using event driven response
5658  * @pf: board private structure
5659  **/
5660 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5661 {
5662         int i;
5663
5664         /* if interface is down do nothing */
5665         if (test_bit(__I40E_DOWN, &pf->state) ||
5666             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5667                 return;
5668
5669         /* make sure we don't do these things too often */
5670         if (time_before(jiffies, (pf->service_timer_previous +
5671                                   pf->service_timer_period)))
5672                 return;
5673         pf->service_timer_previous = jiffies;
5674
5675         i40e_check_hang_subtask(pf);
5676         i40e_link_event(pf);
5677
5678         /* Update the stats for active netdevs so the network stack
5679          * can look at updated numbers whenever it cares to
5680          */
5681         for (i = 0; i < pf->num_alloc_vsi; i++)
5682                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5683                         i40e_update_stats(pf->vsi[i]);
5684
5685         /* Update the stats for the active switching components */
5686         for (i = 0; i < I40E_MAX_VEB; i++)
5687                 if (pf->veb[i])
5688                         i40e_update_veb_stats(pf->veb[i]);
5689
5690         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5691 }
5692
5693 /**
5694  * i40e_reset_subtask - Set up for resetting the device and driver
5695  * @pf: board private structure
5696  **/
5697 static void i40e_reset_subtask(struct i40e_pf *pf)
5698 {
5699         u32 reset_flags = 0;
5700
5701         rtnl_lock();
5702         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5703                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5704                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5705         }
5706         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5707                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5708                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5709         }
5710         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5711                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5712                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5713         }
5714         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5715                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5716                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5717         }
5718         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5719                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5720                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5721         }
5722
5723         /* If there's a recovery already waiting, it takes
5724          * precedence before starting a new reset sequence.
5725          */
5726         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5727                 i40e_handle_reset_warning(pf);
5728                 goto unlock;
5729         }
5730
5731         /* If we're already down or resetting, just bail */
5732         if (reset_flags &&
5733             !test_bit(__I40E_DOWN, &pf->state) &&
5734             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5735                 i40e_do_reset(pf, reset_flags);
5736
5737 unlock:
5738         rtnl_unlock();
5739 }
5740
5741 /**
5742  * i40e_handle_link_event - Handle link event
5743  * @pf: board private structure
5744  * @e: event info posted on ARQ
5745  **/
5746 static void i40e_handle_link_event(struct i40e_pf *pf,
5747                                    struct i40e_arq_event_info *e)
5748 {
5749         struct i40e_hw *hw = &pf->hw;
5750         struct i40e_aqc_get_link_status *status =
5751                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5752         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5753
5754         /* save off old link status information */
5755         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5756                sizeof(pf->hw.phy.link_info_old));
5757
5758         /* Do a new status request to re-enable LSE reporting
5759          * and load new status information into the hw struct
5760          * This completely ignores any state information
5761          * in the ARQ event info, instead choosing to always
5762          * issue the AQ update link status command.
5763          */
5764         i40e_link_event(pf);
5765
5766         /* check for unqualified module, if link is down */
5767         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5768             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5769             (!(status->link_info & I40E_AQ_LINK_UP)))
5770                 dev_err(&pf->pdev->dev,
5771                         "The driver failed to link because an unqualified module was detected.\n");
5772 }
5773
5774 /**
5775  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5776  * @pf: board private structure
5777  **/
5778 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5779 {
5780         struct i40e_arq_event_info event;
5781         struct i40e_hw *hw = &pf->hw;
5782         u16 pending, i = 0;
5783         i40e_status ret;
5784         u16 opcode;
5785         u32 oldval;
5786         u32 val;
5787
5788         /* Do not run clean AQ when PF reset fails */
5789         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5790                 return;
5791
5792         /* check for error indications */
5793         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5794         oldval = val;
5795         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5796                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5797                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5798         }
5799         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5800                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5801                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5802         }
5803         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5804                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5805                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5806         }
5807         if (oldval != val)
5808                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5809
5810         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5811         oldval = val;
5812         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5813                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5814                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5815         }
5816         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5817                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5818                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5819         }
5820         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5821                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5822                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5823         }
5824         if (oldval != val)
5825                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5826
5827         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5828         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5829         if (!event.msg_buf)
5830                 return;
5831
5832         do {
5833                 ret = i40e_clean_arq_element(hw, &event, &pending);
5834                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5835                         break;
5836                 else if (ret) {
5837                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5838                         break;
5839                 }
5840
5841                 opcode = le16_to_cpu(event.desc.opcode);
5842                 switch (opcode) {
5843
5844                 case i40e_aqc_opc_get_link_status:
5845                         i40e_handle_link_event(pf, &event);
5846                         break;
5847                 case i40e_aqc_opc_send_msg_to_pf:
5848                         ret = i40e_vc_process_vf_msg(pf,
5849                                         le16_to_cpu(event.desc.retval),
5850                                         le32_to_cpu(event.desc.cookie_high),
5851                                         le32_to_cpu(event.desc.cookie_low),
5852                                         event.msg_buf,
5853                                         event.msg_len);
5854                         break;
5855                 case i40e_aqc_opc_lldp_update_mib:
5856                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5857 #ifdef CONFIG_I40E_DCB
5858                         rtnl_lock();
5859                         ret = i40e_handle_lldp_event(pf, &event);
5860                         rtnl_unlock();
5861 #endif /* CONFIG_I40E_DCB */
5862                         break;
5863                 case i40e_aqc_opc_event_lan_overflow:
5864                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5865                         i40e_handle_lan_overflow_event(pf, &event);
5866                         break;
5867                 case i40e_aqc_opc_send_msg_to_peer:
5868                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5869                         break;
5870                 default:
5871                         dev_info(&pf->pdev->dev,
5872                                  "ARQ Error: Unknown event 0x%04x received\n",
5873                                  opcode);
5874                         break;
5875                 }
5876         } while (pending && (i++ < pf->adminq_work_limit));
5877
5878         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5879         /* re-enable Admin queue interrupt cause */
5880         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5881         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5882         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5883         i40e_flush(hw);
5884
5885         kfree(event.msg_buf);
5886 }
5887
5888 /**
5889  * i40e_verify_eeprom - make sure eeprom is good to use
5890  * @pf: board private structure
5891  **/
5892 static void i40e_verify_eeprom(struct i40e_pf *pf)
5893 {
5894         int err;
5895
5896         err = i40e_diag_eeprom_test(&pf->hw);
5897         if (err) {
5898                 /* retry in case of garbage read */
5899                 err = i40e_diag_eeprom_test(&pf->hw);
5900                 if (err) {
5901                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5902                                  err);
5903                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5904                 }
5905         }
5906
5907         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5908                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5909                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5910         }
5911 }
5912
5913 /**
5914  * i40e_config_bridge_mode - Configure the HW bridge mode
5915  * @veb: pointer to the bridge instance
5916  *
5917  * Configure the loop back mode for the LAN VSI that is downlink to the
5918  * specified HW bridge instance. It is expected this function is called
5919  * when a new HW bridge is instantiated.
5920  **/
5921 static void i40e_config_bridge_mode(struct i40e_veb *veb)
5922 {
5923         struct i40e_pf *pf = veb->pf;
5924
5925         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
5926                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5927         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
5928                 i40e_disable_pf_switch_lb(pf);
5929         else
5930                 i40e_enable_pf_switch_lb(pf);
5931 }
5932
5933 /**
5934  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5935  * @veb: pointer to the VEB instance
5936  *
5937  * This is a recursive function that first builds the attached VSIs then
5938  * recurses in to build the next layer of VEB.  We track the connections
5939  * through our own index numbers because the seid's from the HW could
5940  * change across the reset.
5941  **/
5942 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5943 {
5944         struct i40e_vsi *ctl_vsi = NULL;
5945         struct i40e_pf *pf = veb->pf;
5946         int v, veb_idx;
5947         int ret;
5948
5949         /* build VSI that owns this VEB, temporarily attached to base VEB */
5950         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5951                 if (pf->vsi[v] &&
5952                     pf->vsi[v]->veb_idx == veb->idx &&
5953                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5954                         ctl_vsi = pf->vsi[v];
5955                         break;
5956                 }
5957         }
5958         if (!ctl_vsi) {
5959                 dev_info(&pf->pdev->dev,
5960                          "missing owner VSI for veb_idx %d\n", veb->idx);
5961                 ret = -ENOENT;
5962                 goto end_reconstitute;
5963         }
5964         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5965                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5966         ret = i40e_add_vsi(ctl_vsi);
5967         if (ret) {
5968                 dev_info(&pf->pdev->dev,
5969                          "rebuild of owner VSI failed: %d\n", ret);
5970                 goto end_reconstitute;
5971         }
5972         i40e_vsi_reset_stats(ctl_vsi);
5973
5974         /* create the VEB in the switch and move the VSI onto the VEB */
5975         ret = i40e_add_veb(veb, ctl_vsi);
5976         if (ret)
5977                 goto end_reconstitute;
5978
5979         i40e_config_bridge_mode(veb);
5980
5981         /* create the remaining VSIs attached to this VEB */
5982         for (v = 0; v < pf->num_alloc_vsi; v++) {
5983                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5984                         continue;
5985
5986                 if (pf->vsi[v]->veb_idx == veb->idx) {
5987                         struct i40e_vsi *vsi = pf->vsi[v];
5988                         vsi->uplink_seid = veb->seid;
5989                         ret = i40e_add_vsi(vsi);
5990                         if (ret) {
5991                                 dev_info(&pf->pdev->dev,
5992                                          "rebuild of vsi_idx %d failed: %d\n",
5993                                          v, ret);
5994                                 goto end_reconstitute;
5995                         }
5996                         i40e_vsi_reset_stats(vsi);
5997                 }
5998         }
5999
6000         /* create any VEBs attached to this VEB - RECURSION */
6001         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6002                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6003                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6004                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6005                         if (ret)
6006                                 break;
6007                 }
6008         }
6009
6010 end_reconstitute:
6011         return ret;
6012 }
6013
6014 /**
6015  * i40e_get_capabilities - get info about the HW
6016  * @pf: the PF struct
6017  **/
6018 static int i40e_get_capabilities(struct i40e_pf *pf)
6019 {
6020         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6021         u16 data_size;
6022         int buf_len;
6023         int err;
6024
6025         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6026         do {
6027                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6028                 if (!cap_buf)
6029                         return -ENOMEM;
6030
6031                 /* this loads the data into the hw struct for us */
6032                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6033                                             &data_size,
6034                                             i40e_aqc_opc_list_func_capabilities,
6035                                             NULL);
6036                 /* data loaded, buffer no longer needed */
6037                 kfree(cap_buf);
6038
6039                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6040                         /* retry with a larger buffer */
6041                         buf_len = data_size;
6042                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6043                         dev_info(&pf->pdev->dev,
6044                                  "capability discovery failed: aq=%d\n",
6045                                  pf->hw.aq.asq_last_status);
6046                         return -ENODEV;
6047                 }
6048         } while (err);
6049
6050         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6051             (pf->hw.aq.fw_maj_ver < 2)) {
6052                 pf->hw.func_caps.num_msix_vectors++;
6053                 pf->hw.func_caps.num_msix_vectors_vf++;
6054         }
6055
6056         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6057                 dev_info(&pf->pdev->dev,
6058                          "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",
6059                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6060                          pf->hw.func_caps.num_msix_vectors,
6061                          pf->hw.func_caps.num_msix_vectors_vf,
6062                          pf->hw.func_caps.fd_filters_guaranteed,
6063                          pf->hw.func_caps.fd_filters_best_effort,
6064                          pf->hw.func_caps.num_tx_qp,
6065                          pf->hw.func_caps.num_vsis);
6066
6067 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6068                        + pf->hw.func_caps.num_vfs)
6069         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6070                 dev_info(&pf->pdev->dev,
6071                          "got num_vsis %d, setting num_vsis to %d\n",
6072                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6073                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6074         }
6075
6076         return 0;
6077 }
6078
6079 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6080
6081 /**
6082  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6083  * @pf: board private structure
6084  **/
6085 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6086 {
6087         struct i40e_vsi *vsi;
6088         int i;
6089
6090         /* quick workaround for an NVM issue that leaves a critical register
6091          * uninitialized
6092          */
6093         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6094                 static const u32 hkey[] = {
6095                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6096                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6097                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6098                         0x95b3a76d};
6099
6100                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6101                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6102         }
6103
6104         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6105                 return;
6106
6107         /* find existing VSI and see if it needs configuring */
6108         vsi = NULL;
6109         for (i = 0; i < pf->num_alloc_vsi; i++) {
6110                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6111                         vsi = pf->vsi[i];
6112                         break;
6113                 }
6114         }
6115
6116         /* create a new VSI if none exists */
6117         if (!vsi) {
6118                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6119                                      pf->vsi[pf->lan_vsi]->seid, 0);
6120                 if (!vsi) {
6121                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6122                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6123                         return;
6124                 }
6125         }
6126
6127         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6128 }
6129
6130 /**
6131  * i40e_fdir_teardown - release the Flow Director resources
6132  * @pf: board private structure
6133  **/
6134 static void i40e_fdir_teardown(struct i40e_pf *pf)
6135 {
6136         int i;
6137
6138         i40e_fdir_filter_exit(pf);
6139         for (i = 0; i < pf->num_alloc_vsi; i++) {
6140                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6141                         i40e_vsi_release(pf->vsi[i]);
6142                         break;
6143                 }
6144         }
6145 }
6146
6147 /**
6148  * i40e_prep_for_reset - prep for the core to reset
6149  * @pf: board private structure
6150  *
6151  * Close up the VFs and other things in prep for pf Reset.
6152   **/
6153 static void i40e_prep_for_reset(struct i40e_pf *pf)
6154 {
6155         struct i40e_hw *hw = &pf->hw;
6156         i40e_status ret = 0;
6157         u32 v;
6158
6159         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6160         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6161                 return;
6162
6163         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6164
6165         /* quiesce the VSIs and their queues that are not already DOWN */
6166         i40e_pf_quiesce_all_vsi(pf);
6167
6168         for (v = 0; v < pf->num_alloc_vsi; v++) {
6169                 if (pf->vsi[v])
6170                         pf->vsi[v]->seid = 0;
6171         }
6172
6173         i40e_shutdown_adminq(&pf->hw);
6174
6175         /* call shutdown HMC */
6176         if (hw->hmc.hmc_obj) {
6177                 ret = i40e_shutdown_lan_hmc(hw);
6178                 if (ret)
6179                         dev_warn(&pf->pdev->dev,
6180                                  "shutdown_lan_hmc failed: %d\n", ret);
6181         }
6182 }
6183
6184 /**
6185  * i40e_send_version - update firmware with driver version
6186  * @pf: PF struct
6187  */
6188 static void i40e_send_version(struct i40e_pf *pf)
6189 {
6190         struct i40e_driver_version dv;
6191
6192         dv.major_version = DRV_VERSION_MAJOR;
6193         dv.minor_version = DRV_VERSION_MINOR;
6194         dv.build_version = DRV_VERSION_BUILD;
6195         dv.subbuild_version = 0;
6196         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6197         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6198 }
6199
6200 /**
6201  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6202  * @pf: board private structure
6203  * @reinit: if the Main VSI needs to re-initialized.
6204  **/
6205 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6206 {
6207         struct i40e_hw *hw = &pf->hw;
6208         u8 set_fc_aq_fail = 0;
6209         i40e_status ret;
6210         u32 v;
6211
6212         /* Now we wait for GRST to settle out.
6213          * We don't have to delete the VEBs or VSIs from the hw switch
6214          * because the reset will make them disappear.
6215          */
6216         ret = i40e_pf_reset(hw);
6217         if (ret) {
6218                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6219                 set_bit(__I40E_RESET_FAILED, &pf->state);
6220                 goto clear_recovery;
6221         }
6222         pf->pfr_count++;
6223
6224         if (test_bit(__I40E_DOWN, &pf->state))
6225                 goto clear_recovery;
6226         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6227
6228         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6229         ret = i40e_init_adminq(&pf->hw);
6230         if (ret) {
6231                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6232                 goto clear_recovery;
6233         }
6234
6235         /* re-verify the eeprom if we just had an EMP reset */
6236         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6237                 i40e_verify_eeprom(pf);
6238
6239         i40e_clear_pxe_mode(hw);
6240         ret = i40e_get_capabilities(pf);
6241         if (ret) {
6242                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6243                          ret);
6244                 goto end_core_reset;
6245         }
6246
6247         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6248                                 hw->func_caps.num_rx_qp,
6249                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6250         if (ret) {
6251                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6252                 goto end_core_reset;
6253         }
6254         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6255         if (ret) {
6256                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6257                 goto end_core_reset;
6258         }
6259
6260 #ifdef CONFIG_I40E_DCB
6261         ret = i40e_init_pf_dcb(pf);
6262         if (ret) {
6263                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6264                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6265                 /* Continue without DCB enabled */
6266         }
6267 #endif /* CONFIG_I40E_DCB */
6268 #ifdef I40E_FCOE
6269         ret = i40e_init_pf_fcoe(pf);
6270         if (ret)
6271                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6272
6273 #endif
6274         /* do basic switch setup */
6275         ret = i40e_setup_pf_switch(pf, reinit);
6276         if (ret)
6277                 goto end_core_reset;
6278
6279         /* driver is only interested in link up/down and module qualification
6280          * reports from firmware
6281          */
6282         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6283                                        I40E_AQ_EVENT_LINK_UPDOWN |
6284                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6285         if (ret)
6286                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6287
6288         /* make sure our flow control settings are restored */
6289         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6290         if (ret)
6291                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6292
6293         /* Rebuild the VSIs and VEBs that existed before reset.
6294          * They are still in our local switch element arrays, so only
6295          * need to rebuild the switch model in the HW.
6296          *
6297          * If there were VEBs but the reconstitution failed, we'll try
6298          * try to recover minimal use by getting the basic PF VSI working.
6299          */
6300         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6301                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6302                 /* find the one VEB connected to the MAC, and find orphans */
6303                 for (v = 0; v < I40E_MAX_VEB; v++) {
6304                         if (!pf->veb[v])
6305                                 continue;
6306
6307                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6308                             pf->veb[v]->uplink_seid == 0) {
6309                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6310
6311                                 if (!ret)
6312                                         continue;
6313
6314                                 /* If Main VEB failed, we're in deep doodoo,
6315                                  * so give up rebuilding the switch and set up
6316                                  * for minimal rebuild of PF VSI.
6317                                  * If orphan failed, we'll report the error
6318                                  * but try to keep going.
6319                                  */
6320                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6321                                         dev_info(&pf->pdev->dev,
6322                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6323                                                  ret);
6324                                         pf->vsi[pf->lan_vsi]->uplink_seid
6325                                                                 = pf->mac_seid;
6326                                         break;
6327                                 } else if (pf->veb[v]->uplink_seid == 0) {
6328                                         dev_info(&pf->pdev->dev,
6329                                                  "rebuild of orphan VEB failed: %d\n",
6330                                                  ret);
6331                                 }
6332                         }
6333                 }
6334         }
6335
6336         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6337                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6338                 /* no VEB, so rebuild only the Main VSI */
6339                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6340                 if (ret) {
6341                         dev_info(&pf->pdev->dev,
6342                                  "rebuild of Main VSI failed: %d\n", ret);
6343                         goto end_core_reset;
6344                 }
6345         }
6346
6347         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6348             (pf->hw.aq.fw_maj_ver < 4)) {
6349                 msleep(75);
6350                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6351                 if (ret)
6352                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6353                                  pf->hw.aq.asq_last_status);
6354         }
6355         /* reinit the misc interrupt */
6356         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6357                 ret = i40e_setup_misc_vector(pf);
6358
6359         /* restart the VSIs that were rebuilt and running before the reset */
6360         i40e_pf_unquiesce_all_vsi(pf);
6361
6362         if (pf->num_alloc_vfs) {
6363                 for (v = 0; v < pf->num_alloc_vfs; v++)
6364                         i40e_reset_vf(&pf->vf[v], true);
6365         }
6366
6367         /* tell the firmware that we're starting */
6368         i40e_send_version(pf);
6369
6370 end_core_reset:
6371         clear_bit(__I40E_RESET_FAILED, &pf->state);
6372 clear_recovery:
6373         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6374 }
6375
6376 /**
6377  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6378  * @pf: board private structure
6379  *
6380  * Close up the VFs and other things in prep for a Core Reset,
6381  * then get ready to rebuild the world.
6382  **/
6383 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6384 {
6385         i40e_prep_for_reset(pf);
6386         i40e_reset_and_rebuild(pf, false);
6387 }
6388
6389 /**
6390  * i40e_handle_mdd_event
6391  * @pf: pointer to the pf structure
6392  *
6393  * Called from the MDD irq handler to identify possibly malicious vfs
6394  **/
6395 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6396 {
6397         struct i40e_hw *hw = &pf->hw;
6398         bool mdd_detected = false;
6399         bool pf_mdd_detected = false;
6400         struct i40e_vf *vf;
6401         u32 reg;
6402         int i;
6403
6404         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6405                 return;
6406
6407         /* find what triggered the MDD event */
6408         reg = rd32(hw, I40E_GL_MDET_TX);
6409         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6410                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6411                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6412                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6413                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6414                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6415                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6416                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6417                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6418                                 pf->hw.func_caps.base_queue;
6419                 if (netif_msg_tx_err(pf))
6420                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6421                                  event, queue, pf_num, vf_num);
6422                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6423                 mdd_detected = true;
6424         }
6425         reg = rd32(hw, I40E_GL_MDET_RX);
6426         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6427                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6428                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6429                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6430                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6431                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6432                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6433                                 pf->hw.func_caps.base_queue;
6434                 if (netif_msg_rx_err(pf))
6435                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6436                                  event, queue, func);
6437                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6438                 mdd_detected = true;
6439         }
6440
6441         if (mdd_detected) {
6442                 reg = rd32(hw, I40E_PF_MDET_TX);
6443                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6444                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6445                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6446                         pf_mdd_detected = true;
6447                 }
6448                 reg = rd32(hw, I40E_PF_MDET_RX);
6449                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6450                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6451                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6452                         pf_mdd_detected = true;
6453                 }
6454                 /* Queue belongs to the PF, initiate a reset */
6455                 if (pf_mdd_detected) {
6456                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6457                         i40e_service_event_schedule(pf);
6458                 }
6459         }
6460
6461         /* see if one of the VFs needs its hand slapped */
6462         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6463                 vf = &(pf->vf[i]);
6464                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6465                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6466                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6467                         vf->num_mdd_events++;
6468                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6469                                  i);
6470                 }
6471
6472                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6473                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6474                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6475                         vf->num_mdd_events++;
6476                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6477                                  i);
6478                 }
6479
6480                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6481                         dev_info(&pf->pdev->dev,
6482                                  "Too many MDD events on VF %d, disabled\n", i);
6483                         dev_info(&pf->pdev->dev,
6484                                  "Use PF Control I/F to re-enable the VF\n");
6485                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6486                 }
6487         }
6488
6489         /* re-enable mdd interrupt cause */
6490         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6491         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6492         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6493         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6494         i40e_flush(hw);
6495 }
6496
6497 #ifdef CONFIG_I40E_VXLAN
6498 /**
6499  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6500  * @pf: board private structure
6501  **/
6502 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6503 {
6504         struct i40e_hw *hw = &pf->hw;
6505         i40e_status ret;
6506         u8 filter_index;
6507         __be16 port;
6508         int i;
6509
6510         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6511                 return;
6512
6513         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6514
6515         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6516                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6517                         pf->pending_vxlan_bitmap &= ~(1 << i);
6518                         port = pf->vxlan_ports[i];
6519                         ret = port ?
6520                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6521                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6522                                                      &filter_index, NULL)
6523                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6524
6525                         if (ret) {
6526                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6527                                          port ? "adding" : "deleting",
6528                                          ntohs(port), port ? i : i);
6529
6530                                 pf->vxlan_ports[i] = 0;
6531                         } else {
6532                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6533                                          port ? "Added" : "Deleted",
6534                                          ntohs(port), port ? i : filter_index);
6535                         }
6536                 }
6537         }
6538 }
6539
6540 #endif
6541 /**
6542  * i40e_service_task - Run the driver's async subtasks
6543  * @work: pointer to work_struct containing our data
6544  **/
6545 static void i40e_service_task(struct work_struct *work)
6546 {
6547         struct i40e_pf *pf = container_of(work,
6548                                           struct i40e_pf,
6549                                           service_task);
6550         unsigned long start_time = jiffies;
6551
6552         /* don't bother with service tasks if a reset is in progress */
6553         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6554                 i40e_service_event_complete(pf);
6555                 return;
6556         }
6557
6558         i40e_reset_subtask(pf);
6559         i40e_handle_mdd_event(pf);
6560         i40e_vc_process_vflr_event(pf);
6561         i40e_watchdog_subtask(pf);
6562         i40e_fdir_reinit_subtask(pf);
6563         i40e_sync_filters_subtask(pf);
6564 #ifdef CONFIG_I40E_VXLAN
6565         i40e_sync_vxlan_filters_subtask(pf);
6566 #endif
6567         i40e_clean_adminq_subtask(pf);
6568
6569         i40e_service_event_complete(pf);
6570
6571         /* If the tasks have taken longer than one timer cycle or there
6572          * is more work to be done, reschedule the service task now
6573          * rather than wait for the timer to tick again.
6574          */
6575         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6576             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6577             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6578             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6579                 i40e_service_event_schedule(pf);
6580 }
6581
6582 /**
6583  * i40e_service_timer - timer callback
6584  * @data: pointer to PF struct
6585  **/
6586 static void i40e_service_timer(unsigned long data)
6587 {
6588         struct i40e_pf *pf = (struct i40e_pf *)data;
6589
6590         mod_timer(&pf->service_timer,
6591                   round_jiffies(jiffies + pf->service_timer_period));
6592         i40e_service_event_schedule(pf);
6593 }
6594
6595 /**
6596  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6597  * @vsi: the VSI being configured
6598  **/
6599 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6600 {
6601         struct i40e_pf *pf = vsi->back;
6602
6603         switch (vsi->type) {
6604         case I40E_VSI_MAIN:
6605                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6606                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6607                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6608                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6609                         vsi->num_q_vectors = pf->num_lan_msix;
6610                 else
6611                         vsi->num_q_vectors = 1;
6612
6613                 break;
6614
6615         case I40E_VSI_FDIR:
6616                 vsi->alloc_queue_pairs = 1;
6617                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6618                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6619                 vsi->num_q_vectors = 1;
6620                 break;
6621
6622         case I40E_VSI_VMDQ2:
6623                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6624                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6625                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6626                 vsi->num_q_vectors = pf->num_vmdq_msix;
6627                 break;
6628
6629         case I40E_VSI_SRIOV:
6630                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6631                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6632                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6633                 break;
6634
6635 #ifdef I40E_FCOE
6636         case I40E_VSI_FCOE:
6637                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6638                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6639                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6640                 vsi->num_q_vectors = pf->num_fcoe_msix;
6641                 break;
6642
6643 #endif /* I40E_FCOE */
6644         default:
6645                 WARN_ON(1);
6646                 return -ENODATA;
6647         }
6648
6649         return 0;
6650 }
6651
6652 /**
6653  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6654  * @type: VSI pointer
6655  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6656  *
6657  * On error: returns error code (negative)
6658  * On success: returns 0
6659  **/
6660 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6661 {
6662         int size;
6663         int ret = 0;
6664
6665         /* allocate memory for both Tx and Rx ring pointers */
6666         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6667         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6668         if (!vsi->tx_rings)
6669                 return -ENOMEM;
6670         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6671
6672         if (alloc_qvectors) {
6673                 /* allocate memory for q_vector pointers */
6674                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6675                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6676                 if (!vsi->q_vectors) {
6677                         ret = -ENOMEM;
6678                         goto err_vectors;
6679                 }
6680         }
6681         return ret;
6682
6683 err_vectors:
6684         kfree(vsi->tx_rings);
6685         return ret;
6686 }
6687
6688 /**
6689  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6690  * @pf: board private structure
6691  * @type: type of VSI
6692  *
6693  * On error: returns error code (negative)
6694  * On success: returns vsi index in PF (positive)
6695  **/
6696 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6697 {
6698         int ret = -ENODEV;
6699         struct i40e_vsi *vsi;
6700         int vsi_idx;
6701         int i;
6702
6703         /* Need to protect the allocation of the VSIs at the PF level */
6704         mutex_lock(&pf->switch_mutex);
6705
6706         /* VSI list may be fragmented if VSI creation/destruction has
6707          * been happening.  We can afford to do a quick scan to look
6708          * for any free VSIs in the list.
6709          *
6710          * find next empty vsi slot, looping back around if necessary
6711          */
6712         i = pf->next_vsi;
6713         while (i < pf->num_alloc_vsi && pf->vsi[i])
6714                 i++;
6715         if (i >= pf->num_alloc_vsi) {
6716                 i = 0;
6717                 while (i < pf->next_vsi && pf->vsi[i])
6718                         i++;
6719         }
6720
6721         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6722                 vsi_idx = i;             /* Found one! */
6723         } else {
6724                 ret = -ENODEV;
6725                 goto unlock_pf;  /* out of VSI slots! */
6726         }
6727         pf->next_vsi = ++i;
6728
6729         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6730         if (!vsi) {
6731                 ret = -ENOMEM;
6732                 goto unlock_pf;
6733         }
6734         vsi->type = type;
6735         vsi->back = pf;
6736         set_bit(__I40E_DOWN, &vsi->state);
6737         vsi->flags = 0;
6738         vsi->idx = vsi_idx;
6739         vsi->rx_itr_setting = pf->rx_itr_default;
6740         vsi->tx_itr_setting = pf->tx_itr_default;
6741         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6742                                 pf->rss_table_size : 64;
6743         vsi->netdev_registered = false;
6744         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6745         INIT_LIST_HEAD(&vsi->mac_filter_list);
6746         vsi->irqs_ready = false;
6747
6748         ret = i40e_set_num_rings_in_vsi(vsi);
6749         if (ret)
6750                 goto err_rings;
6751
6752         ret = i40e_vsi_alloc_arrays(vsi, true);
6753         if (ret)
6754                 goto err_rings;
6755
6756         /* Setup default MSIX irq handler for VSI */
6757         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6758
6759         pf->vsi[vsi_idx] = vsi;
6760         ret = vsi_idx;
6761         goto unlock_pf;
6762
6763 err_rings:
6764         pf->next_vsi = i - 1;
6765         kfree(vsi);
6766 unlock_pf:
6767         mutex_unlock(&pf->switch_mutex);
6768         return ret;
6769 }
6770
6771 /**
6772  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6773  * @type: VSI pointer
6774  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6775  *
6776  * On error: returns error code (negative)
6777  * On success: returns 0
6778  **/
6779 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6780 {
6781         /* free the ring and vector containers */
6782         if (free_qvectors) {
6783                 kfree(vsi->q_vectors);
6784                 vsi->q_vectors = NULL;
6785         }
6786         kfree(vsi->tx_rings);
6787         vsi->tx_rings = NULL;
6788         vsi->rx_rings = NULL;
6789 }
6790
6791 /**
6792  * i40e_vsi_clear - Deallocate the VSI provided
6793  * @vsi: the VSI being un-configured
6794  **/
6795 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6796 {
6797         struct i40e_pf *pf;
6798
6799         if (!vsi)
6800                 return 0;
6801
6802         if (!vsi->back)
6803                 goto free_vsi;
6804         pf = vsi->back;
6805
6806         mutex_lock(&pf->switch_mutex);
6807         if (!pf->vsi[vsi->idx]) {
6808                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6809                         vsi->idx, vsi->idx, vsi, vsi->type);
6810                 goto unlock_vsi;
6811         }
6812
6813         if (pf->vsi[vsi->idx] != vsi) {
6814                 dev_err(&pf->pdev->dev,
6815                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6816                         pf->vsi[vsi->idx]->idx,
6817                         pf->vsi[vsi->idx],
6818                         pf->vsi[vsi->idx]->type,
6819                         vsi->idx, vsi, vsi->type);
6820                 goto unlock_vsi;
6821         }
6822
6823         /* updates the pf for this cleared vsi */
6824         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6825         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6826
6827         i40e_vsi_free_arrays(vsi, true);
6828
6829         pf->vsi[vsi->idx] = NULL;
6830         if (vsi->idx < pf->next_vsi)
6831                 pf->next_vsi = vsi->idx;
6832
6833 unlock_vsi:
6834         mutex_unlock(&pf->switch_mutex);
6835 free_vsi:
6836         kfree(vsi);
6837
6838         return 0;
6839 }
6840
6841 /**
6842  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6843  * @vsi: the VSI being cleaned
6844  **/
6845 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6846 {
6847         int i;
6848
6849         if (vsi->tx_rings && vsi->tx_rings[0]) {
6850                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6851                         kfree_rcu(vsi->tx_rings[i], rcu);
6852                         vsi->tx_rings[i] = NULL;
6853                         vsi->rx_rings[i] = NULL;
6854                 }
6855         }
6856 }
6857
6858 /**
6859  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6860  * @vsi: the VSI being configured
6861  **/
6862 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6863 {
6864         struct i40e_ring *tx_ring, *rx_ring;
6865         struct i40e_pf *pf = vsi->back;
6866         int i;
6867
6868         /* Set basic values in the rings to be used later during open() */
6869         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6870                 /* allocate space for both Tx and Rx in one shot */
6871                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6872                 if (!tx_ring)
6873                         goto err_out;
6874
6875                 tx_ring->queue_index = i;
6876                 tx_ring->reg_idx = vsi->base_queue + i;
6877                 tx_ring->ring_active = false;
6878                 tx_ring->vsi = vsi;
6879                 tx_ring->netdev = vsi->netdev;
6880                 tx_ring->dev = &pf->pdev->dev;
6881                 tx_ring->count = vsi->num_desc;
6882                 tx_ring->size = 0;
6883                 tx_ring->dcb_tc = 0;
6884                 vsi->tx_rings[i] = tx_ring;
6885
6886                 rx_ring = &tx_ring[1];
6887                 rx_ring->queue_index = i;
6888                 rx_ring->reg_idx = vsi->base_queue + i;
6889                 rx_ring->ring_active = false;
6890                 rx_ring->vsi = vsi;
6891                 rx_ring->netdev = vsi->netdev;
6892                 rx_ring->dev = &pf->pdev->dev;
6893                 rx_ring->count = vsi->num_desc;
6894                 rx_ring->size = 0;
6895                 rx_ring->dcb_tc = 0;
6896                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6897                         set_ring_16byte_desc_enabled(rx_ring);
6898                 else
6899                         clear_ring_16byte_desc_enabled(rx_ring);
6900                 vsi->rx_rings[i] = rx_ring;
6901         }
6902
6903         return 0;
6904
6905 err_out:
6906         i40e_vsi_clear_rings(vsi);
6907         return -ENOMEM;
6908 }
6909
6910 /**
6911  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6912  * @pf: board private structure
6913  * @vectors: the number of MSI-X vectors to request
6914  *
6915  * Returns the number of vectors reserved, or error
6916  **/
6917 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6918 {
6919         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6920                                         I40E_MIN_MSIX, vectors);
6921         if (vectors < 0) {
6922                 dev_info(&pf->pdev->dev,
6923                          "MSI-X vector reservation failed: %d\n", vectors);
6924                 vectors = 0;
6925         }
6926
6927         return vectors;
6928 }
6929
6930 /**
6931  * i40e_init_msix - Setup the MSIX capability
6932  * @pf: board private structure
6933  *
6934  * Work with the OS to set up the MSIX vectors needed.
6935  *
6936  * Returns 0 on success, negative on failure
6937  **/
6938 static int i40e_init_msix(struct i40e_pf *pf)
6939 {
6940         i40e_status err = 0;
6941         struct i40e_hw *hw = &pf->hw;
6942         int other_vecs = 0;
6943         int v_budget, i;
6944         int vec;
6945
6946         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6947                 return -ENODEV;
6948
6949         /* The number of vectors we'll request will be comprised of:
6950          *   - Add 1 for "other" cause for Admin Queue events, etc.
6951          *   - The number of LAN queue pairs
6952          *      - Queues being used for RSS.
6953          *              We don't need as many as max_rss_size vectors.
6954          *              use rss_size instead in the calculation since that
6955          *              is governed by number of cpus in the system.
6956          *      - assumes symmetric Tx/Rx pairing
6957          *   - The number of VMDq pairs
6958 #ifdef I40E_FCOE
6959          *   - The number of FCOE qps.
6960 #endif
6961          * Once we count this up, try the request.
6962          *
6963          * If we can't get what we want, we'll simplify to nearly nothing
6964          * and try again.  If that still fails, we punt.
6965          */
6966         pf->num_lan_msix = min_t(int, num_online_cpus(),
6967                                  hw->func_caps.num_msix_vectors);
6968         pf->num_vmdq_msix = pf->num_vmdq_qps;
6969         other_vecs = 1;
6970         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6971         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6972                 other_vecs++;
6973
6974         /* Scale down if necessary, and the rings will share vectors */
6975         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6976                         (hw->func_caps.num_msix_vectors - other_vecs));
6977         v_budget = pf->num_lan_msix + other_vecs;
6978
6979 #ifdef I40E_FCOE
6980         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6981                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6982                 v_budget += pf->num_fcoe_msix;
6983         }
6984 #endif
6985
6986         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6987                                    GFP_KERNEL);
6988         if (!pf->msix_entries)
6989                 return -ENOMEM;
6990
6991         for (i = 0; i < v_budget; i++)
6992                 pf->msix_entries[i].entry = i;
6993         vec = i40e_reserve_msix_vectors(pf, v_budget);
6994
6995         if (vec != v_budget) {
6996                 /* If we have limited resources, we will start with no vectors
6997                  * for the special features and then allocate vectors to some
6998                  * of these features based on the policy and at the end disable
6999                  * the features that did not get any vectors.
7000                  */
7001 #ifdef I40E_FCOE
7002                 pf->num_fcoe_qps = 0;
7003                 pf->num_fcoe_msix = 0;
7004 #endif
7005                 pf->num_vmdq_msix = 0;
7006         }
7007
7008         if (vec < I40E_MIN_MSIX) {
7009                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7010                 kfree(pf->msix_entries);
7011                 pf->msix_entries = NULL;
7012                 return -ENODEV;
7013
7014         } else if (vec == I40E_MIN_MSIX) {
7015                 /* Adjust for minimal MSIX use */
7016                 pf->num_vmdq_vsis = 0;
7017                 pf->num_vmdq_qps = 0;
7018                 pf->num_lan_qps = 1;
7019                 pf->num_lan_msix = 1;
7020
7021         } else if (vec != v_budget) {
7022                 /* reserve the misc vector */
7023                 vec--;
7024
7025                 /* Scale vector usage down */
7026                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7027                 pf->num_vmdq_vsis = 1;
7028
7029                 /* partition out the remaining vectors */
7030                 switch (vec) {
7031                 case 2:
7032                         pf->num_lan_msix = 1;
7033                         break;
7034                 case 3:
7035 #ifdef I40E_FCOE
7036                         /* give one vector to FCoE */
7037                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7038                                 pf->num_lan_msix = 1;
7039                                 pf->num_fcoe_msix = 1;
7040                         }
7041 #else
7042                         pf->num_lan_msix = 2;
7043 #endif
7044                         break;
7045                 default:
7046 #ifdef I40E_FCOE
7047                         /* give one vector to FCoE */
7048                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7049                                 pf->num_fcoe_msix = 1;
7050                                 vec--;
7051                         }
7052 #endif
7053                         pf->num_lan_msix = min_t(int, (vec / 2),
7054                                                  pf->num_lan_qps);
7055                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7056                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7057                         break;
7058                 }
7059         }
7060
7061         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7062             (pf->num_vmdq_msix == 0)) {
7063                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7064                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7065         }
7066 #ifdef I40E_FCOE
7067
7068         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7069                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7070                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7071         }
7072 #endif
7073         return err;
7074 }
7075
7076 /**
7077  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7078  * @vsi: the VSI being configured
7079  * @v_idx: index of the vector in the vsi struct
7080  *
7081  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7082  **/
7083 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7084 {
7085         struct i40e_q_vector *q_vector;
7086
7087         /* allocate q_vector */
7088         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7089         if (!q_vector)
7090                 return -ENOMEM;
7091
7092         q_vector->vsi = vsi;
7093         q_vector->v_idx = v_idx;
7094         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7095         if (vsi->netdev)
7096                 netif_napi_add(vsi->netdev, &q_vector->napi,
7097                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7098
7099         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7100         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7101
7102         /* tie q_vector and vsi together */
7103         vsi->q_vectors[v_idx] = q_vector;
7104
7105         return 0;
7106 }
7107
7108 /**
7109  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7110  * @vsi: the VSI being configured
7111  *
7112  * We allocate one q_vector per queue interrupt.  If allocation fails we
7113  * return -ENOMEM.
7114  **/
7115 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7116 {
7117         struct i40e_pf *pf = vsi->back;
7118         int v_idx, num_q_vectors;
7119         int err;
7120
7121         /* if not MSIX, give the one vector only to the LAN VSI */
7122         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7123                 num_q_vectors = vsi->num_q_vectors;
7124         else if (vsi == pf->vsi[pf->lan_vsi])
7125                 num_q_vectors = 1;
7126         else
7127                 return -EINVAL;
7128
7129         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7130                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7131                 if (err)
7132                         goto err_out;
7133         }
7134
7135         return 0;
7136
7137 err_out:
7138         while (v_idx--)
7139                 i40e_free_q_vector(vsi, v_idx);
7140
7141         return err;
7142 }
7143
7144 /**
7145  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7146  * @pf: board private structure to initialize
7147  **/
7148 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7149 {
7150         int err = 0;
7151
7152         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7153                 err = i40e_init_msix(pf);
7154                 if (err) {
7155                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7156 #ifdef I40E_FCOE
7157                                        I40E_FLAG_FCOE_ENABLED   |
7158 #endif
7159                                        I40E_FLAG_RSS_ENABLED    |
7160                                        I40E_FLAG_DCB_CAPABLE    |
7161                                        I40E_FLAG_SRIOV_ENABLED  |
7162                                        I40E_FLAG_FD_SB_ENABLED  |
7163                                        I40E_FLAG_FD_ATR_ENABLED |
7164                                        I40E_FLAG_VMDQ_ENABLED);
7165
7166                         /* rework the queue expectations without MSIX */
7167                         i40e_determine_queue_usage(pf);
7168                 }
7169         }
7170
7171         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7172             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7173                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7174                 err = pci_enable_msi(pf->pdev);
7175                 if (err) {
7176                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7177                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7178                 }
7179         }
7180
7181         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7182                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7183
7184         /* track first vector for misc interrupts */
7185         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7186 }
7187
7188 /**
7189  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7190  * @pf: board private structure
7191  *
7192  * This sets up the handler for MSIX 0, which is used to manage the
7193  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7194  * when in MSI or Legacy interrupt mode.
7195  **/
7196 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7197 {
7198         struct i40e_hw *hw = &pf->hw;
7199         int err = 0;
7200
7201         /* Only request the irq if this is the first time through, and
7202          * not when we're rebuilding after a Reset
7203          */
7204         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7205                 err = request_irq(pf->msix_entries[0].vector,
7206                                   i40e_intr, 0, pf->int_name, pf);
7207                 if (err) {
7208                         dev_info(&pf->pdev->dev,
7209                                  "request_irq for %s failed: %d\n",
7210                                  pf->int_name, err);
7211                         return -EFAULT;
7212                 }
7213         }
7214
7215         i40e_enable_misc_int_causes(pf);
7216
7217         /* associate no queues to the misc vector */
7218         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7219         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7220
7221         i40e_flush(hw);
7222
7223         i40e_irq_dynamic_enable_icr0(pf);
7224
7225         return err;
7226 }
7227
7228 /**
7229  * i40e_config_rss - Prepare for RSS if used
7230  * @pf: board private structure
7231  **/
7232 static int i40e_config_rss(struct i40e_pf *pf)
7233 {
7234         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7235         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7236         struct i40e_hw *hw = &pf->hw;
7237         u32 lut = 0;
7238         int i, j;
7239         u64 hena;
7240         u32 reg_val;
7241
7242         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7243         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7244                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7245
7246         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7247         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7248                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7249         hena |= I40E_DEFAULT_RSS_HENA;
7250         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7251         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7252
7253         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7254
7255         /* Check capability and Set table size and register per hw expectation*/
7256         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7257         if (hw->func_caps.rss_table_size == 512) {
7258                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7259                 pf->rss_table_size = 512;
7260         } else {
7261                 pf->rss_table_size = 128;
7262                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7263         }
7264         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7265
7266         /* Populate the LUT with max no. of queues in round robin fashion */
7267         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7268
7269                 /* The assumption is that lan qp count will be the highest
7270                  * qp count for any PF VSI that needs RSS.
7271                  * If multiple VSIs need RSS support, all the qp counts
7272                  * for those VSIs should be a power of 2 for RSS to work.
7273                  * If LAN VSI is the only consumer for RSS then this requirement
7274                  * is not necessary.
7275                  */
7276                 if (j == vsi->rss_size)
7277                         j = 0;
7278                 /* lut = 4-byte sliding window of 4 lut entries */
7279                 lut = (lut << 8) | (j &
7280                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7281                 /* On i = 3, we have 4 entries in lut; write to the register */
7282                 if ((i & 3) == 3)
7283                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7284         }
7285         i40e_flush(hw);
7286
7287         return 0;
7288 }
7289
7290 /**
7291  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7292  * @pf: board private structure
7293  * @queue_count: the requested queue count for rss.
7294  *
7295  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7296  * count which may be different from the requested queue count.
7297  **/
7298 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7299 {
7300         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7301         int new_rss_size;
7302
7303         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7304                 return 0;
7305
7306         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7307
7308         if (queue_count != vsi->num_queue_pairs) {
7309                 vsi->req_queue_pairs = queue_count;
7310                 i40e_prep_for_reset(pf);
7311
7312                 pf->rss_size = new_rss_size;
7313
7314                 i40e_reset_and_rebuild(pf, true);
7315                 i40e_config_rss(pf);
7316         }
7317         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7318         return pf->rss_size;
7319 }
7320
7321 /**
7322  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7323  * @pf: board private structure
7324  **/
7325 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7326 {
7327         i40e_status status;
7328         bool min_valid, max_valid;
7329         u32 max_bw, min_bw;
7330
7331         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7332                                            &min_valid, &max_valid);
7333
7334         if (!status) {
7335                 if (min_valid)
7336                         pf->npar_min_bw = min_bw;
7337                 if (max_valid)
7338                         pf->npar_max_bw = max_bw;
7339         }
7340
7341         return status;
7342 }
7343
7344 /**
7345  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7346  * @pf: board private structure
7347  **/
7348 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7349 {
7350         struct i40e_aqc_configure_partition_bw_data bw_data;
7351         i40e_status status;
7352
7353         /* Set the valid bit for this pf */
7354         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7355         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7356         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7357
7358         /* Set the new bandwidths */
7359         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7360
7361         return status;
7362 }
7363
7364 /**
7365  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7366  * @pf: board private structure
7367  **/
7368 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7369 {
7370         /* Commit temporary BW setting to permanent NVM image */
7371         enum i40e_admin_queue_err last_aq_status;
7372         i40e_status ret;
7373         u16 nvm_word;
7374
7375         if (pf->hw.partition_id != 1) {
7376                 dev_info(&pf->pdev->dev,
7377                          "Commit BW only works on partition 1! This is partition %d",
7378                          pf->hw.partition_id);
7379                 ret = I40E_NOT_SUPPORTED;
7380                 goto bw_commit_out;
7381         }
7382
7383         /* Acquire NVM for read access */
7384         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7385         last_aq_status = pf->hw.aq.asq_last_status;
7386         if (ret) {
7387                 dev_info(&pf->pdev->dev,
7388                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7389                          ret, last_aq_status);
7390                 goto bw_commit_out;
7391         }
7392
7393         /* Read word 0x10 of NVM - SW compatibility word 1 */
7394         ret = i40e_aq_read_nvm(&pf->hw,
7395                                I40E_SR_NVM_CONTROL_WORD,
7396                                0x10, sizeof(nvm_word), &nvm_word,
7397                                false, NULL);
7398         /* Save off last admin queue command status before releasing
7399          * the NVM
7400          */
7401         last_aq_status = pf->hw.aq.asq_last_status;
7402         i40e_release_nvm(&pf->hw);
7403         if (ret) {
7404                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7405                          ret, last_aq_status);
7406                 goto bw_commit_out;
7407         }
7408
7409         /* Wait a bit for NVM release to complete */
7410         msleep(50);
7411
7412         /* Acquire NVM for write access */
7413         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7414         last_aq_status = pf->hw.aq.asq_last_status;
7415         if (ret) {
7416                 dev_info(&pf->pdev->dev,
7417                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7418                          ret, last_aq_status);
7419                 goto bw_commit_out;
7420         }
7421         /* Write it back out unchanged to initiate update NVM,
7422          * which will force a write of the shadow (alt) RAM to
7423          * the NVM - thus storing the bandwidth values permanently.
7424          */
7425         ret = i40e_aq_update_nvm(&pf->hw,
7426                                  I40E_SR_NVM_CONTROL_WORD,
7427                                  0x10, sizeof(nvm_word),
7428                                  &nvm_word, true, NULL);
7429         /* Save off last admin queue command status before releasing
7430          * the NVM
7431          */
7432         last_aq_status = pf->hw.aq.asq_last_status;
7433         i40e_release_nvm(&pf->hw);
7434         if (ret)
7435                 dev_info(&pf->pdev->dev,
7436                          "BW settings NOT SAVED, err %d aq_err %d\n",
7437                          ret, last_aq_status);
7438 bw_commit_out:
7439
7440         return ret;
7441 }
7442
7443 /**
7444  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7445  * @pf: board private structure to initialize
7446  *
7447  * i40e_sw_init initializes the Adapter private data structure.
7448  * Fields are initialized based on PCI device information and
7449  * OS network device settings (MTU size).
7450  **/
7451 static int i40e_sw_init(struct i40e_pf *pf)
7452 {
7453         int err = 0;
7454         int size;
7455
7456         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7457                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7458         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7459         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7460                 if (I40E_DEBUG_USER & debug)
7461                         pf->hw.debug_mask = debug;
7462                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7463                                                 I40E_DEFAULT_MSG_ENABLE);
7464         }
7465
7466         /* Set default capability flags */
7467         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7468                     I40E_FLAG_MSI_ENABLED     |
7469                     I40E_FLAG_MSIX_ENABLED;
7470
7471         if (iommu_present(&pci_bus_type))
7472                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7473         else
7474                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7475
7476         /* Set default ITR */
7477         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7478         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7479
7480         /* Depending on PF configurations, it is possible that the RSS
7481          * maximum might end up larger than the available queues
7482          */
7483         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7484         pf->rss_size = 1;
7485         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7486         pf->rss_size_max = min_t(int, pf->rss_size_max,
7487                                  pf->hw.func_caps.num_tx_qp);
7488         if (pf->hw.func_caps.rss) {
7489                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7490                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7491         }
7492
7493         /* MFP mode enabled */
7494         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7495                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7496                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7497                 if (i40e_get_npar_bw_setting(pf))
7498                         dev_warn(&pf->pdev->dev,
7499                                  "Could not get NPAR bw settings\n");
7500                 else
7501                         dev_info(&pf->pdev->dev,
7502                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7503                                  pf->npar_min_bw, pf->npar_max_bw);
7504         }
7505
7506         /* FW/NVM is not yet fixed in this regard */
7507         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7508             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7509                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7510                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7511                 /* Setup a counter for fd_atr per pf */
7512                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7513                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7514                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7515                         /* Setup a counter for fd_sb per pf */
7516                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7517                 } else {
7518                         dev_info(&pf->pdev->dev,
7519                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7520                 }
7521                 pf->fdir_pf_filter_count =
7522                                  pf->hw.func_caps.fd_filters_guaranteed;
7523                 pf->hw.fdir_shared_filter_count =
7524                                  pf->hw.func_caps.fd_filters_best_effort;
7525         }
7526
7527         if (pf->hw.func_caps.vmdq) {
7528                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7529                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7530                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7531         }
7532
7533 #ifdef I40E_FCOE
7534         err = i40e_init_pf_fcoe(pf);
7535         if (err)
7536                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7537
7538 #endif /* I40E_FCOE */
7539 #ifdef CONFIG_PCI_IOV
7540         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7541                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7542                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7543                 pf->num_req_vfs = min_t(int,
7544                                         pf->hw.func_caps.num_vfs,
7545                                         I40E_MAX_VF_COUNT);
7546         }
7547 #endif /* CONFIG_PCI_IOV */
7548         pf->eeprom_version = 0xDEAD;
7549         pf->lan_veb = I40E_NO_VEB;
7550         pf->lan_vsi = I40E_NO_VSI;
7551
7552         /* set up queue assignment tracking */
7553         size = sizeof(struct i40e_lump_tracking)
7554                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7555         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7556         if (!pf->qp_pile) {
7557                 err = -ENOMEM;
7558                 goto sw_init_done;
7559         }
7560         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7561         pf->qp_pile->search_hint = 0;
7562
7563         /* set up vector assignment tracking */
7564         size = sizeof(struct i40e_lump_tracking)
7565                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7566         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7567         if (!pf->irq_pile) {
7568                 kfree(pf->qp_pile);
7569                 err = -ENOMEM;
7570                 goto sw_init_done;
7571         }
7572         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7573         pf->irq_pile->search_hint = 0;
7574
7575         pf->tx_timeout_recovery_level = 1;
7576
7577         mutex_init(&pf->switch_mutex);
7578
7579 sw_init_done:
7580         return err;
7581 }
7582
7583 /**
7584  * i40e_set_ntuple - set the ntuple feature flag and take action
7585  * @pf: board private structure to initialize
7586  * @features: the feature set that the stack is suggesting
7587  *
7588  * returns a bool to indicate if reset needs to happen
7589  **/
7590 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7591 {
7592         bool need_reset = false;
7593
7594         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7595          * the state changed, we need to reset.
7596          */
7597         if (features & NETIF_F_NTUPLE) {
7598                 /* Enable filters and mark for reset */
7599                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7600                         need_reset = true;
7601                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7602         } else {
7603                 /* turn off filters, mark for reset and clear SW filter list */
7604                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7605                         need_reset = true;
7606                         i40e_fdir_filter_exit(pf);
7607                 }
7608                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7609                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7610                 /* reset fd counters */
7611                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7612                 pf->fdir_pf_active_filters = 0;
7613                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7614                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7615                 /* if ATR was auto disabled it can be re-enabled. */
7616                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7617                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7618                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7619         }
7620         return need_reset;
7621 }
7622
7623 /**
7624  * i40e_set_features - set the netdev feature flags
7625  * @netdev: ptr to the netdev being adjusted
7626  * @features: the feature set that the stack is suggesting
7627  **/
7628 static int i40e_set_features(struct net_device *netdev,
7629                              netdev_features_t features)
7630 {
7631         struct i40e_netdev_priv *np = netdev_priv(netdev);
7632         struct i40e_vsi *vsi = np->vsi;
7633         struct i40e_pf *pf = vsi->back;
7634         bool need_reset;
7635
7636         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7637                 i40e_vlan_stripping_enable(vsi);
7638         else
7639                 i40e_vlan_stripping_disable(vsi);
7640
7641         need_reset = i40e_set_ntuple(pf, features);
7642
7643         if (need_reset)
7644                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7645
7646         return 0;
7647 }
7648
7649 #ifdef CONFIG_I40E_VXLAN
7650 /**
7651  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7652  * @pf: board private structure
7653  * @port: The UDP port to look up
7654  *
7655  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7656  **/
7657 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7658 {
7659         u8 i;
7660
7661         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7662                 if (pf->vxlan_ports[i] == port)
7663                         return i;
7664         }
7665
7666         return i;
7667 }
7668
7669 /**
7670  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7671  * @netdev: This physical port's netdev
7672  * @sa_family: Socket Family that VXLAN is notifying us about
7673  * @port: New UDP port number that VXLAN started listening to
7674  **/
7675 static void i40e_add_vxlan_port(struct net_device *netdev,
7676                                 sa_family_t sa_family, __be16 port)
7677 {
7678         struct i40e_netdev_priv *np = netdev_priv(netdev);
7679         struct i40e_vsi *vsi = np->vsi;
7680         struct i40e_pf *pf = vsi->back;
7681         u8 next_idx;
7682         u8 idx;
7683
7684         if (sa_family == AF_INET6)
7685                 return;
7686
7687         idx = i40e_get_vxlan_port_idx(pf, port);
7688
7689         /* Check if port already exists */
7690         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7691                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7692                 return;
7693         }
7694
7695         /* Now check if there is space to add the new port */
7696         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7697
7698         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7699                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7700                             ntohs(port));
7701                 return;
7702         }
7703
7704         /* New port: add it and mark its index in the bitmap */
7705         pf->vxlan_ports[next_idx] = port;
7706         pf->pending_vxlan_bitmap |= (1 << next_idx);
7707
7708         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7709 }
7710
7711 /**
7712  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7713  * @netdev: This physical port's netdev
7714  * @sa_family: Socket Family that VXLAN is notifying us about
7715  * @port: UDP port number that VXLAN stopped listening to
7716  **/
7717 static void i40e_del_vxlan_port(struct net_device *netdev,
7718                                 sa_family_t sa_family, __be16 port)
7719 {
7720         struct i40e_netdev_priv *np = netdev_priv(netdev);
7721         struct i40e_vsi *vsi = np->vsi;
7722         struct i40e_pf *pf = vsi->back;
7723         u8 idx;
7724
7725         if (sa_family == AF_INET6)
7726                 return;
7727
7728         idx = i40e_get_vxlan_port_idx(pf, port);
7729
7730         /* Check if port already exists */
7731         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7732                 /* if port exists, set it to 0 (mark for deletion)
7733                  * and make it pending
7734                  */
7735                 pf->vxlan_ports[idx] = 0;
7736
7737                 pf->pending_vxlan_bitmap |= (1 << idx);
7738
7739                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7740         } else {
7741                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7742                             ntohs(port));
7743         }
7744 }
7745
7746 #endif
7747 static int i40e_get_phys_port_id(struct net_device *netdev,
7748                                  struct netdev_phys_item_id *ppid)
7749 {
7750         struct i40e_netdev_priv *np = netdev_priv(netdev);
7751         struct i40e_pf *pf = np->vsi->back;
7752         struct i40e_hw *hw = &pf->hw;
7753
7754         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7755                 return -EOPNOTSUPP;
7756
7757         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7758         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7759
7760         return 0;
7761 }
7762
7763 /**
7764  * i40e_ndo_fdb_add - add an entry to the hardware database
7765  * @ndm: the input from the stack
7766  * @tb: pointer to array of nladdr (unused)
7767  * @dev: the net device pointer
7768  * @addr: the MAC address entry being added
7769  * @flags: instructions from stack about fdb operation
7770  */
7771 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7772                             struct net_device *dev,
7773                             const unsigned char *addr, u16 vid,
7774                             u16 flags)
7775 {
7776         struct i40e_netdev_priv *np = netdev_priv(dev);
7777         struct i40e_pf *pf = np->vsi->back;
7778         int err = 0;
7779
7780         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7781                 return -EOPNOTSUPP;
7782
7783         if (vid) {
7784                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7785                 return -EINVAL;
7786         }
7787
7788         /* Hardware does not support aging addresses so if a
7789          * ndm_state is given only allow permanent addresses
7790          */
7791         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7792                 netdev_info(dev, "FDB only supports static addresses\n");
7793                 return -EINVAL;
7794         }
7795
7796         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7797                 err = dev_uc_add_excl(dev, addr);
7798         else if (is_multicast_ether_addr(addr))
7799                 err = dev_mc_add_excl(dev, addr);
7800         else
7801                 err = -EINVAL;
7802
7803         /* Only return duplicate errors if NLM_F_EXCL is set */
7804         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7805                 err = 0;
7806
7807         return err;
7808 }
7809
7810 #ifdef HAVE_BRIDGE_ATTRIBS
7811 /**
7812  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7813  * @dev: the netdev being configured
7814  * @nlh: RTNL message
7815  *
7816  * Inserts a new hardware bridge if not already created and
7817  * enables the bridging mode requested (VEB or VEPA). If the
7818  * hardware bridge has already been inserted and the request
7819  * is to change the mode then that requires a PF reset to
7820  * allow rebuild of the components with required hardware
7821  * bridge mode enabled.
7822  **/
7823 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7824                                    struct nlmsghdr *nlh)
7825 {
7826         struct i40e_netdev_priv *np = netdev_priv(dev);
7827         struct i40e_vsi *vsi = np->vsi;
7828         struct i40e_pf *pf = vsi->back;
7829         struct i40e_veb *veb = NULL;
7830         struct nlattr *attr, *br_spec;
7831         int i, rem;
7832
7833         /* Only for PF VSI for now */
7834         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7835                 return -EOPNOTSUPP;
7836
7837         /* Find the HW bridge for PF VSI */
7838         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7839                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7840                         veb = pf->veb[i];
7841         }
7842
7843         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7844
7845         nla_for_each_nested(attr, br_spec, rem) {
7846                 __u16 mode;
7847
7848                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7849                         continue;
7850
7851                 mode = nla_get_u16(attr);
7852                 if ((mode != BRIDGE_MODE_VEPA) &&
7853                     (mode != BRIDGE_MODE_VEB))
7854                         return -EINVAL;
7855
7856                 /* Insert a new HW bridge */
7857                 if (!veb) {
7858                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7859                                              vsi->tc_config.enabled_tc);
7860                         if (veb) {
7861                                 veb->bridge_mode = mode;
7862                                 i40e_config_bridge_mode(veb);
7863                         } else {
7864                                 /* No Bridge HW offload available */
7865                                 return -ENOENT;
7866                         }
7867                         break;
7868                 } else if (mode != veb->bridge_mode) {
7869                         /* Existing HW bridge but different mode needs reset */
7870                         veb->bridge_mode = mode;
7871                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7872                         break;
7873                 }
7874         }
7875
7876         return 0;
7877 }
7878
7879 /**
7880  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
7881  * @skb: skb buff
7882  * @pid: process id
7883  * @seq: RTNL message seq #
7884  * @dev: the netdev being configured
7885  * @filter_mask: unused
7886  *
7887  * Return the mode in which the hardware bridge is operating in
7888  * i.e VEB or VEPA.
7889  **/
7890 #ifdef HAVE_BRIDGE_FILTER
7891 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7892                                    struct net_device *dev,
7893                                    u32 __always_unused filter_mask)
7894 #else
7895 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7896                                    struct net_device *dev)
7897 #endif /* HAVE_BRIDGE_FILTER */
7898 {
7899         struct i40e_netdev_priv *np = netdev_priv(dev);
7900         struct i40e_vsi *vsi = np->vsi;
7901         struct i40e_pf *pf = vsi->back;
7902         struct i40e_veb *veb = NULL;
7903         int i;
7904
7905         /* Only for PF VSI for now */
7906         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7907                 return -EOPNOTSUPP;
7908
7909         /* Find the HW bridge for the PF VSI */
7910         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7911                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7912                         veb = pf->veb[i];
7913         }
7914
7915         if (!veb)
7916                 return 0;
7917
7918         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
7919 }
7920 #endif /* HAVE_BRIDGE_ATTRIBS */
7921
7922 const struct net_device_ops i40e_netdev_ops = {
7923         .ndo_open               = i40e_open,
7924         .ndo_stop               = i40e_close,
7925         .ndo_start_xmit         = i40e_lan_xmit_frame,
7926         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7927         .ndo_set_rx_mode        = i40e_set_rx_mode,
7928         .ndo_validate_addr      = eth_validate_addr,
7929         .ndo_set_mac_address    = i40e_set_mac,
7930         .ndo_change_mtu         = i40e_change_mtu,
7931         .ndo_do_ioctl           = i40e_ioctl,
7932         .ndo_tx_timeout         = i40e_tx_timeout,
7933         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7934         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7935 #ifdef CONFIG_NET_POLL_CONTROLLER
7936         .ndo_poll_controller    = i40e_netpoll,
7937 #endif
7938         .ndo_setup_tc           = i40e_setup_tc,
7939 #ifdef I40E_FCOE
7940         .ndo_fcoe_enable        = i40e_fcoe_enable,
7941         .ndo_fcoe_disable       = i40e_fcoe_disable,
7942 #endif
7943         .ndo_set_features       = i40e_set_features,
7944         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7945         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7946         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7947         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7948         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7949         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7950 #ifdef CONFIG_I40E_VXLAN
7951         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7952         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7953 #endif
7954         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7955         .ndo_fdb_add            = i40e_ndo_fdb_add,
7956 #ifdef HAVE_BRIDGE_ATTRIBS
7957         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
7958         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
7959 #endif /* HAVE_BRIDGE_ATTRIBS */
7960 };
7961
7962 /**
7963  * i40e_config_netdev - Setup the netdev flags
7964  * @vsi: the VSI being configured
7965  *
7966  * Returns 0 on success, negative value on failure
7967  **/
7968 static int i40e_config_netdev(struct i40e_vsi *vsi)
7969 {
7970         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7971         struct i40e_pf *pf = vsi->back;
7972         struct i40e_hw *hw = &pf->hw;
7973         struct i40e_netdev_priv *np;
7974         struct net_device *netdev;
7975         u8 mac_addr[ETH_ALEN];
7976         int etherdev_size;
7977
7978         etherdev_size = sizeof(struct i40e_netdev_priv);
7979         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7980         if (!netdev)
7981                 return -ENOMEM;
7982
7983         vsi->netdev = netdev;
7984         np = netdev_priv(netdev);
7985         np->vsi = vsi;
7986
7987         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7988                                   NETIF_F_GSO_UDP_TUNNEL |
7989                                   NETIF_F_TSO;
7990
7991         netdev->features = NETIF_F_SG                  |
7992                            NETIF_F_IP_CSUM             |
7993                            NETIF_F_SCTP_CSUM           |
7994                            NETIF_F_HIGHDMA             |
7995                            NETIF_F_GSO_UDP_TUNNEL      |
7996                            NETIF_F_HW_VLAN_CTAG_TX     |
7997                            NETIF_F_HW_VLAN_CTAG_RX     |
7998                            NETIF_F_HW_VLAN_CTAG_FILTER |
7999                            NETIF_F_IPV6_CSUM           |
8000                            NETIF_F_TSO                 |
8001                            NETIF_F_TSO_ECN             |
8002                            NETIF_F_TSO6                |
8003                            NETIF_F_RXCSUM              |
8004                            NETIF_F_RXHASH              |
8005                            0;
8006
8007         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8008                 netdev->features |= NETIF_F_NTUPLE;
8009
8010         /* copy netdev features into list of user selectable features */
8011         netdev->hw_features |= netdev->features;
8012
8013         if (vsi->type == I40E_VSI_MAIN) {
8014                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8015                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8016                 /* The following steps are necessary to prevent reception
8017                  * of tagged packets - some older NVM configurations load a
8018                  * default a MAC-VLAN filter that accepts any tagged packet
8019                  * which must be replaced by a normal filter.
8020                  */
8021                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8022                         i40e_add_filter(vsi, mac_addr,
8023                                         I40E_VLAN_ANY, false, true);
8024         } else {
8025                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8026                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8027                          pf->vsi[pf->lan_vsi]->netdev->name);
8028                 random_ether_addr(mac_addr);
8029                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8030         }
8031         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8032
8033         ether_addr_copy(netdev->dev_addr, mac_addr);
8034         ether_addr_copy(netdev->perm_addr, mac_addr);
8035         /* vlan gets same features (except vlan offload)
8036          * after any tweaks for specific VSI types
8037          */
8038         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8039                                                      NETIF_F_HW_VLAN_CTAG_RX |
8040                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8041         netdev->priv_flags |= IFF_UNICAST_FLT;
8042         netdev->priv_flags |= IFF_SUPP_NOFCS;
8043         /* Setup netdev TC information */
8044         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8045
8046         netdev->netdev_ops = &i40e_netdev_ops;
8047         netdev->watchdog_timeo = 5 * HZ;
8048         i40e_set_ethtool_ops(netdev);
8049 #ifdef I40E_FCOE
8050         i40e_fcoe_config_netdev(netdev, vsi);
8051 #endif
8052
8053         return 0;
8054 }
8055
8056 /**
8057  * i40e_vsi_delete - Delete a VSI from the switch
8058  * @vsi: the VSI being removed
8059  *
8060  * Returns 0 on success, negative value on failure
8061  **/
8062 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8063 {
8064         /* remove default VSI is not allowed */
8065         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8066                 return;
8067
8068         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8069 }
8070
8071 /**
8072  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8073  * @vsi: the VSI being queried
8074  *
8075  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8076  **/
8077 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8078 {
8079         struct i40e_veb *veb;
8080         struct i40e_pf *pf = vsi->back;
8081
8082         /* Uplink is not a bridge so default to VEB */
8083         if (vsi->veb_idx == I40E_NO_VEB)
8084                 return 1;
8085
8086         veb = pf->veb[vsi->veb_idx];
8087         /* Uplink is a bridge in VEPA mode */
8088         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8089                 return 0;
8090
8091         /* Uplink is a bridge in VEB mode */
8092         return 1;
8093 }
8094
8095 /**
8096  * i40e_add_vsi - Add a VSI to the switch
8097  * @vsi: the VSI being configured
8098  *
8099  * This initializes a VSI context depending on the VSI type to be added and
8100  * passes it down to the add_vsi aq command.
8101  **/
8102 static int i40e_add_vsi(struct i40e_vsi *vsi)
8103 {
8104         int ret = -ENODEV;
8105         struct i40e_mac_filter *f, *ftmp;
8106         struct i40e_pf *pf = vsi->back;
8107         struct i40e_hw *hw = &pf->hw;
8108         struct i40e_vsi_context ctxt;
8109         u8 enabled_tc = 0x1; /* TC0 enabled */
8110         int f_count = 0;
8111
8112         memset(&ctxt, 0, sizeof(ctxt));
8113         switch (vsi->type) {
8114         case I40E_VSI_MAIN:
8115                 /* The PF's main VSI is already setup as part of the
8116                  * device initialization, so we'll not bother with
8117                  * the add_vsi call, but we will retrieve the current
8118                  * VSI context.
8119                  */
8120                 ctxt.seid = pf->main_vsi_seid;
8121                 ctxt.pf_num = pf->hw.pf_id;
8122                 ctxt.vf_num = 0;
8123                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8124                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8125                 if (ret) {
8126                         dev_info(&pf->pdev->dev,
8127                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
8128                                  ret, pf->hw.aq.asq_last_status);
8129                         return -ENOENT;
8130                 }
8131                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8132                 vsi->info.valid_sections = 0;
8133
8134                 vsi->seid = ctxt.seid;
8135                 vsi->id = ctxt.vsi_number;
8136
8137                 enabled_tc = i40e_pf_get_tc_map(pf);
8138
8139                 /* MFP mode setup queue map and update VSI */
8140                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8141                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8142                         memset(&ctxt, 0, sizeof(ctxt));
8143                         ctxt.seid = pf->main_vsi_seid;
8144                         ctxt.pf_num = pf->hw.pf_id;
8145                         ctxt.vf_num = 0;
8146                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8147                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8148                         if (ret) {
8149                                 dev_info(&pf->pdev->dev,
8150                                          "update vsi failed, aq_err=%d\n",
8151                                          pf->hw.aq.asq_last_status);
8152                                 ret = -ENOENT;
8153                                 goto err;
8154                         }
8155                         /* update the local VSI info queue map */
8156                         i40e_vsi_update_queue_map(vsi, &ctxt);
8157                         vsi->info.valid_sections = 0;
8158                 } else {
8159                         /* Default/Main VSI is only enabled for TC0
8160                          * reconfigure it to enable all TCs that are
8161                          * available on the port in SFP mode.
8162                          * For MFP case the iSCSI PF would use this
8163                          * flow to enable LAN+iSCSI TC.
8164                          */
8165                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8166                         if (ret) {
8167                                 dev_info(&pf->pdev->dev,
8168                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8169                                          enabled_tc, ret,
8170                                          pf->hw.aq.asq_last_status);
8171                                 ret = -ENOENT;
8172                         }
8173                 }
8174                 break;
8175
8176         case I40E_VSI_FDIR:
8177                 ctxt.pf_num = hw->pf_id;
8178                 ctxt.vf_num = 0;
8179                 ctxt.uplink_seid = vsi->uplink_seid;
8180                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8181                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8182                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8183                         ctxt.info.valid_sections |=
8184                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8185                         ctxt.info.switch_id =
8186                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8187                 }
8188                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8189                 break;
8190
8191         case I40E_VSI_VMDQ2:
8192                 ctxt.pf_num = hw->pf_id;
8193                 ctxt.vf_num = 0;
8194                 ctxt.uplink_seid = vsi->uplink_seid;
8195                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8196                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8197
8198                 /* This VSI is connected to VEB so the switch_id
8199                  * should be set to zero by default.
8200                  */
8201                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8202                         ctxt.info.valid_sections |=
8203                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8204                         ctxt.info.switch_id =
8205                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8206                 }
8207
8208                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8209                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8210                 break;
8211
8212         case I40E_VSI_SRIOV:
8213                 ctxt.pf_num = hw->pf_id;
8214                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8215                 ctxt.uplink_seid = vsi->uplink_seid;
8216                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8217                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8218
8219                 /* This VSI is connected to VEB so the switch_id
8220                  * should be set to zero by default.
8221                  */
8222                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8223                         ctxt.info.valid_sections |=
8224                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8225                         ctxt.info.switch_id =
8226                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8227                 }
8228
8229                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8230                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8231                 if (pf->vf[vsi->vf_id].spoofchk) {
8232                         ctxt.info.valid_sections |=
8233                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8234                         ctxt.info.sec_flags |=
8235                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8236                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8237                 }
8238                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8239                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8240                 break;
8241
8242 #ifdef I40E_FCOE
8243         case I40E_VSI_FCOE:
8244                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8245                 if (ret) {
8246                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8247                         return ret;
8248                 }
8249                 break;
8250
8251 #endif /* I40E_FCOE */
8252         default:
8253                 return -ENODEV;
8254         }
8255
8256         if (vsi->type != I40E_VSI_MAIN) {
8257                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8258                 if (ret) {
8259                         dev_info(&vsi->back->pdev->dev,
8260                                  "add vsi failed, aq_err=%d\n",
8261                                  vsi->back->hw.aq.asq_last_status);
8262                         ret = -ENOENT;
8263                         goto err;
8264                 }
8265                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8266                 vsi->info.valid_sections = 0;
8267                 vsi->seid = ctxt.seid;
8268                 vsi->id = ctxt.vsi_number;
8269         }
8270
8271         /* If macvlan filters already exist, force them to get loaded */
8272         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8273                 f->changed = true;
8274                 f_count++;
8275
8276                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8277                         struct i40e_aqc_remove_macvlan_element_data element;
8278
8279                         memset(&element, 0, sizeof(element));
8280                         ether_addr_copy(element.mac_addr, f->macaddr);
8281                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8282                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8283                                                      &element, 1, NULL);
8284                         if (ret) {
8285                                 /* some older FW has a different default */
8286                                 element.flags |=
8287                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8288                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8289                                                        &element, 1, NULL);
8290                         }
8291
8292                         i40e_aq_mac_address_write(hw,
8293                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8294                                                   f->macaddr, NULL);
8295                 }
8296         }
8297         if (f_count) {
8298                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8299                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8300         }
8301
8302         /* Update VSI BW information */
8303         ret = i40e_vsi_get_bw_info(vsi);
8304         if (ret) {
8305                 dev_info(&pf->pdev->dev,
8306                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8307                          ret, pf->hw.aq.asq_last_status);
8308                 /* VSI is already added so not tearing that up */
8309                 ret = 0;
8310         }
8311
8312 err:
8313         return ret;
8314 }
8315
8316 /**
8317  * i40e_vsi_release - Delete a VSI and free its resources
8318  * @vsi: the VSI being removed
8319  *
8320  * Returns 0 on success or < 0 on error
8321  **/
8322 int i40e_vsi_release(struct i40e_vsi *vsi)
8323 {
8324         struct i40e_mac_filter *f, *ftmp;
8325         struct i40e_veb *veb = NULL;
8326         struct i40e_pf *pf;
8327         u16 uplink_seid;
8328         int i, n;
8329
8330         pf = vsi->back;
8331
8332         /* release of a VEB-owner or last VSI is not allowed */
8333         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8334                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8335                          vsi->seid, vsi->uplink_seid);
8336                 return -ENODEV;
8337         }
8338         if (vsi == pf->vsi[pf->lan_vsi] &&
8339             !test_bit(__I40E_DOWN, &pf->state)) {
8340                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8341                 return -ENODEV;
8342         }
8343
8344         uplink_seid = vsi->uplink_seid;
8345         if (vsi->type != I40E_VSI_SRIOV) {
8346                 if (vsi->netdev_registered) {
8347                         vsi->netdev_registered = false;
8348                         if (vsi->netdev) {
8349                                 /* results in a call to i40e_close() */
8350                                 unregister_netdev(vsi->netdev);
8351                         }
8352                 } else {
8353                         i40e_vsi_close(vsi);
8354                 }
8355                 i40e_vsi_disable_irq(vsi);
8356         }
8357
8358         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8359                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8360                                 f->is_vf, f->is_netdev);
8361         i40e_sync_vsi_filters(vsi);
8362
8363         i40e_vsi_delete(vsi);
8364         i40e_vsi_free_q_vectors(vsi);
8365         if (vsi->netdev) {
8366                 free_netdev(vsi->netdev);
8367                 vsi->netdev = NULL;
8368         }
8369         i40e_vsi_clear_rings(vsi);
8370         i40e_vsi_clear(vsi);
8371
8372         /* If this was the last thing on the VEB, except for the
8373          * controlling VSI, remove the VEB, which puts the controlling
8374          * VSI onto the next level down in the switch.
8375          *
8376          * Well, okay, there's one more exception here: don't remove
8377          * the orphan VEBs yet.  We'll wait for an explicit remove request
8378          * from up the network stack.
8379          */
8380         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8381                 if (pf->vsi[i] &&
8382                     pf->vsi[i]->uplink_seid == uplink_seid &&
8383                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8384                         n++;      /* count the VSIs */
8385                 }
8386         }
8387         for (i = 0; i < I40E_MAX_VEB; i++) {
8388                 if (!pf->veb[i])
8389                         continue;
8390                 if (pf->veb[i]->uplink_seid == uplink_seid)
8391                         n++;     /* count the VEBs */
8392                 if (pf->veb[i]->seid == uplink_seid)
8393                         veb = pf->veb[i];
8394         }
8395         if (n == 0 && veb && veb->uplink_seid != 0)
8396                 i40e_veb_release(veb);
8397
8398         return 0;
8399 }
8400
8401 /**
8402  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8403  * @vsi: ptr to the VSI
8404  *
8405  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8406  * corresponding SW VSI structure and initializes num_queue_pairs for the
8407  * newly allocated VSI.
8408  *
8409  * Returns 0 on success or negative on failure
8410  **/
8411 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8412 {
8413         int ret = -ENOENT;
8414         struct i40e_pf *pf = vsi->back;
8415
8416         if (vsi->q_vectors[0]) {
8417                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8418                          vsi->seid);
8419                 return -EEXIST;
8420         }
8421
8422         if (vsi->base_vector) {
8423                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8424                          vsi->seid, vsi->base_vector);
8425                 return -EEXIST;
8426         }
8427
8428         ret = i40e_vsi_alloc_q_vectors(vsi);
8429         if (ret) {
8430                 dev_info(&pf->pdev->dev,
8431                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8432                          vsi->num_q_vectors, vsi->seid, ret);
8433                 vsi->num_q_vectors = 0;
8434                 goto vector_setup_out;
8435         }
8436
8437         if (vsi->num_q_vectors)
8438                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8439                                                  vsi->num_q_vectors, vsi->idx);
8440         if (vsi->base_vector < 0) {
8441                 dev_info(&pf->pdev->dev,
8442                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8443                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8444                 i40e_vsi_free_q_vectors(vsi);
8445                 ret = -ENOENT;
8446                 goto vector_setup_out;
8447         }
8448
8449 vector_setup_out:
8450         return ret;
8451 }
8452
8453 /**
8454  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8455  * @vsi: pointer to the vsi.
8456  *
8457  * This re-allocates a vsi's queue resources.
8458  *
8459  * Returns pointer to the successfully allocated and configured VSI sw struct
8460  * on success, otherwise returns NULL on failure.
8461  **/
8462 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8463 {
8464         struct i40e_pf *pf = vsi->back;
8465         u8 enabled_tc;
8466         int ret;
8467
8468         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8469         i40e_vsi_clear_rings(vsi);
8470
8471         i40e_vsi_free_arrays(vsi, false);
8472         i40e_set_num_rings_in_vsi(vsi);
8473         ret = i40e_vsi_alloc_arrays(vsi, false);
8474         if (ret)
8475                 goto err_vsi;
8476
8477         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8478         if (ret < 0) {
8479                 dev_info(&pf->pdev->dev,
8480                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8481                          vsi->alloc_queue_pairs, vsi->seid, ret);
8482                 goto err_vsi;
8483         }
8484         vsi->base_queue = ret;
8485
8486         /* Update the FW view of the VSI. Force a reset of TC and queue
8487          * layout configurations.
8488          */
8489         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8490         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8491         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8492         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8493
8494         /* assign it some queues */
8495         ret = i40e_alloc_rings(vsi);
8496         if (ret)
8497                 goto err_rings;
8498
8499         /* map all of the rings to the q_vectors */
8500         i40e_vsi_map_rings_to_vectors(vsi);
8501         return vsi;
8502
8503 err_rings:
8504         i40e_vsi_free_q_vectors(vsi);
8505         if (vsi->netdev_registered) {
8506                 vsi->netdev_registered = false;
8507                 unregister_netdev(vsi->netdev);
8508                 free_netdev(vsi->netdev);
8509                 vsi->netdev = NULL;
8510         }
8511         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8512 err_vsi:
8513         i40e_vsi_clear(vsi);
8514         return NULL;
8515 }
8516
8517 /**
8518  * i40e_vsi_setup - Set up a VSI by a given type
8519  * @pf: board private structure
8520  * @type: VSI type
8521  * @uplink_seid: the switch element to link to
8522  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8523  *
8524  * This allocates the sw VSI structure and its queue resources, then add a VSI
8525  * to the identified VEB.
8526  *
8527  * Returns pointer to the successfully allocated and configure VSI sw struct on
8528  * success, otherwise returns NULL on failure.
8529  **/
8530 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8531                                 u16 uplink_seid, u32 param1)
8532 {
8533         struct i40e_vsi *vsi = NULL;
8534         struct i40e_veb *veb = NULL;
8535         int ret, i;
8536         int v_idx;
8537
8538         /* The requested uplink_seid must be either
8539          *     - the PF's port seid
8540          *              no VEB is needed because this is the PF
8541          *              or this is a Flow Director special case VSI
8542          *     - seid of an existing VEB
8543          *     - seid of a VSI that owns an existing VEB
8544          *     - seid of a VSI that doesn't own a VEB
8545          *              a new VEB is created and the VSI becomes the owner
8546          *     - seid of the PF VSI, which is what creates the first VEB
8547          *              this is a special case of the previous
8548          *
8549          * Find which uplink_seid we were given and create a new VEB if needed
8550          */
8551         for (i = 0; i < I40E_MAX_VEB; i++) {
8552                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8553                         veb = pf->veb[i];
8554                         break;
8555                 }
8556         }
8557
8558         if (!veb && uplink_seid != pf->mac_seid) {
8559
8560                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8561                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8562                                 vsi = pf->vsi[i];
8563                                 break;
8564                         }
8565                 }
8566                 if (!vsi) {
8567                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8568                                  uplink_seid);
8569                         return NULL;
8570                 }
8571
8572                 if (vsi->uplink_seid == pf->mac_seid)
8573                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8574                                              vsi->tc_config.enabled_tc);
8575                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8576                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8577                                              vsi->tc_config.enabled_tc);
8578                 if (veb) {
8579                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8580                                 dev_info(&vsi->back->pdev->dev,
8581                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8582                                          __func__);
8583                                 return NULL;
8584                         }
8585                         i40e_config_bridge_mode(veb);
8586                 }
8587                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8588                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8589                                 veb = pf->veb[i];
8590                 }
8591                 if (!veb) {
8592                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8593                         return NULL;
8594                 }
8595
8596                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8597                 uplink_seid = veb->seid;
8598         }
8599
8600         /* get vsi sw struct */
8601         v_idx = i40e_vsi_mem_alloc(pf, type);
8602         if (v_idx < 0)
8603                 goto err_alloc;
8604         vsi = pf->vsi[v_idx];
8605         if (!vsi)
8606                 goto err_alloc;
8607         vsi->type = type;
8608         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8609
8610         if (type == I40E_VSI_MAIN)
8611                 pf->lan_vsi = v_idx;
8612         else if (type == I40E_VSI_SRIOV)
8613                 vsi->vf_id = param1;
8614         /* assign it some queues */
8615         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8616                                 vsi->idx);
8617         if (ret < 0) {
8618                 dev_info(&pf->pdev->dev,
8619                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8620                          vsi->alloc_queue_pairs, vsi->seid, ret);
8621                 goto err_vsi;
8622         }
8623         vsi->base_queue = ret;
8624
8625         /* get a VSI from the hardware */
8626         vsi->uplink_seid = uplink_seid;
8627         ret = i40e_add_vsi(vsi);
8628         if (ret)
8629                 goto err_vsi;
8630
8631         switch (vsi->type) {
8632         /* setup the netdev if needed */
8633         case I40E_VSI_MAIN:
8634         case I40E_VSI_VMDQ2:
8635         case I40E_VSI_FCOE:
8636                 ret = i40e_config_netdev(vsi);
8637                 if (ret)
8638                         goto err_netdev;
8639                 ret = register_netdev(vsi->netdev);
8640                 if (ret)
8641                         goto err_netdev;
8642                 vsi->netdev_registered = true;
8643                 netif_carrier_off(vsi->netdev);
8644 #ifdef CONFIG_I40E_DCB
8645                 /* Setup DCB netlink interface */
8646                 i40e_dcbnl_setup(vsi);
8647 #endif /* CONFIG_I40E_DCB */
8648                 /* fall through */
8649
8650         case I40E_VSI_FDIR:
8651                 /* set up vectors and rings if needed */
8652                 ret = i40e_vsi_setup_vectors(vsi);
8653                 if (ret)
8654                         goto err_msix;
8655
8656                 ret = i40e_alloc_rings(vsi);
8657                 if (ret)
8658                         goto err_rings;
8659
8660                 /* map all of the rings to the q_vectors */
8661                 i40e_vsi_map_rings_to_vectors(vsi);
8662
8663                 i40e_vsi_reset_stats(vsi);
8664                 break;
8665
8666         default:
8667                 /* no netdev or rings for the other VSI types */
8668                 break;
8669         }
8670
8671         return vsi;
8672
8673 err_rings:
8674         i40e_vsi_free_q_vectors(vsi);
8675 err_msix:
8676         if (vsi->netdev_registered) {
8677                 vsi->netdev_registered = false;
8678                 unregister_netdev(vsi->netdev);
8679                 free_netdev(vsi->netdev);
8680                 vsi->netdev = NULL;
8681         }
8682 err_netdev:
8683         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8684 err_vsi:
8685         i40e_vsi_clear(vsi);
8686 err_alloc:
8687         return NULL;
8688 }
8689
8690 /**
8691  * i40e_veb_get_bw_info - Query VEB BW information
8692  * @veb: the veb to query
8693  *
8694  * Query the Tx scheduler BW configuration data for given VEB
8695  **/
8696 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8697 {
8698         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8699         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8700         struct i40e_pf *pf = veb->pf;
8701         struct i40e_hw *hw = &pf->hw;
8702         u32 tc_bw_max;
8703         int ret = 0;
8704         int i;
8705
8706         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8707                                                   &bw_data, NULL);
8708         if (ret) {
8709                 dev_info(&pf->pdev->dev,
8710                          "query veb bw config failed, aq_err=%d\n",
8711                          hw->aq.asq_last_status);
8712                 goto out;
8713         }
8714
8715         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8716                                                    &ets_data, NULL);
8717         if (ret) {
8718                 dev_info(&pf->pdev->dev,
8719                          "query veb bw ets config failed, aq_err=%d\n",
8720                          hw->aq.asq_last_status);
8721                 goto out;
8722         }
8723
8724         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8725         veb->bw_max_quanta = ets_data.tc_bw_max;
8726         veb->is_abs_credits = bw_data.absolute_credits_enable;
8727         veb->enabled_tc = ets_data.tc_valid_bits;
8728         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8729                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8730         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8731                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8732                 veb->bw_tc_limit_credits[i] =
8733                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8734                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8735         }
8736
8737 out:
8738         return ret;
8739 }
8740
8741 /**
8742  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8743  * @pf: board private structure
8744  *
8745  * On error: returns error code (negative)
8746  * On success: returns vsi index in PF (positive)
8747  **/
8748 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8749 {
8750         int ret = -ENOENT;
8751         struct i40e_veb *veb;
8752         int i;
8753
8754         /* Need to protect the allocation of switch elements at the PF level */
8755         mutex_lock(&pf->switch_mutex);
8756
8757         /* VEB list may be fragmented if VEB creation/destruction has
8758          * been happening.  We can afford to do a quick scan to look
8759          * for any free slots in the list.
8760          *
8761          * find next empty veb slot, looping back around if necessary
8762          */
8763         i = 0;
8764         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8765                 i++;
8766         if (i >= I40E_MAX_VEB) {
8767                 ret = -ENOMEM;
8768                 goto err_alloc_veb;  /* out of VEB slots! */
8769         }
8770
8771         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8772         if (!veb) {
8773                 ret = -ENOMEM;
8774                 goto err_alloc_veb;
8775         }
8776         veb->pf = pf;
8777         veb->idx = i;
8778         veb->enabled_tc = 1;
8779
8780         pf->veb[i] = veb;
8781         ret = i;
8782 err_alloc_veb:
8783         mutex_unlock(&pf->switch_mutex);
8784         return ret;
8785 }
8786
8787 /**
8788  * i40e_switch_branch_release - Delete a branch of the switch tree
8789  * @branch: where to start deleting
8790  *
8791  * This uses recursion to find the tips of the branch to be
8792  * removed, deleting until we get back to and can delete this VEB.
8793  **/
8794 static void i40e_switch_branch_release(struct i40e_veb *branch)
8795 {
8796         struct i40e_pf *pf = branch->pf;
8797         u16 branch_seid = branch->seid;
8798         u16 veb_idx = branch->idx;
8799         int i;
8800
8801         /* release any VEBs on this VEB - RECURSION */
8802         for (i = 0; i < I40E_MAX_VEB; i++) {
8803                 if (!pf->veb[i])
8804                         continue;
8805                 if (pf->veb[i]->uplink_seid == branch->seid)
8806                         i40e_switch_branch_release(pf->veb[i]);
8807         }
8808
8809         /* Release the VSIs on this VEB, but not the owner VSI.
8810          *
8811          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8812          *       the VEB itself, so don't use (*branch) after this loop.
8813          */
8814         for (i = 0; i < pf->num_alloc_vsi; i++) {
8815                 if (!pf->vsi[i])
8816                         continue;
8817                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8818                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8819                         i40e_vsi_release(pf->vsi[i]);
8820                 }
8821         }
8822
8823         /* There's one corner case where the VEB might not have been
8824          * removed, so double check it here and remove it if needed.
8825          * This case happens if the veb was created from the debugfs
8826          * commands and no VSIs were added to it.
8827          */
8828         if (pf->veb[veb_idx])
8829                 i40e_veb_release(pf->veb[veb_idx]);
8830 }
8831
8832 /**
8833  * i40e_veb_clear - remove veb struct
8834  * @veb: the veb to remove
8835  **/
8836 static void i40e_veb_clear(struct i40e_veb *veb)
8837 {
8838         if (!veb)
8839                 return;
8840
8841         if (veb->pf) {
8842                 struct i40e_pf *pf = veb->pf;
8843
8844                 mutex_lock(&pf->switch_mutex);
8845                 if (pf->veb[veb->idx] == veb)
8846                         pf->veb[veb->idx] = NULL;
8847                 mutex_unlock(&pf->switch_mutex);
8848         }
8849
8850         kfree(veb);
8851 }
8852
8853 /**
8854  * i40e_veb_release - Delete a VEB and free its resources
8855  * @veb: the VEB being removed
8856  **/
8857 void i40e_veb_release(struct i40e_veb *veb)
8858 {
8859         struct i40e_vsi *vsi = NULL;
8860         struct i40e_pf *pf;
8861         int i, n = 0;
8862
8863         pf = veb->pf;
8864
8865         /* find the remaining VSI and check for extras */
8866         for (i = 0; i < pf->num_alloc_vsi; i++) {
8867                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8868                         n++;
8869                         vsi = pf->vsi[i];
8870                 }
8871         }
8872         if (n != 1) {
8873                 dev_info(&pf->pdev->dev,
8874                          "can't remove VEB %d with %d VSIs left\n",
8875                          veb->seid, n);
8876                 return;
8877         }
8878
8879         /* move the remaining VSI to uplink veb */
8880         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8881         if (veb->uplink_seid) {
8882                 vsi->uplink_seid = veb->uplink_seid;
8883                 if (veb->uplink_seid == pf->mac_seid)
8884                         vsi->veb_idx = I40E_NO_VEB;
8885                 else
8886                         vsi->veb_idx = veb->veb_idx;
8887         } else {
8888                 /* floating VEB */
8889                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8890                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8891         }
8892
8893         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8894         i40e_veb_clear(veb);
8895 }
8896
8897 /**
8898  * i40e_add_veb - create the VEB in the switch
8899  * @veb: the VEB to be instantiated
8900  * @vsi: the controlling VSI
8901  **/
8902 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8903 {
8904         bool is_default = false;
8905         bool is_cloud = false;
8906         int ret;
8907
8908         /* get a VEB from the hardware */
8909         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8910                               veb->enabled_tc, is_default,
8911                               is_cloud, &veb->seid, NULL);
8912         if (ret) {
8913                 dev_info(&veb->pf->pdev->dev,
8914                          "couldn't add VEB, err %d, aq_err %d\n",
8915                          ret, veb->pf->hw.aq.asq_last_status);
8916                 return -EPERM;
8917         }
8918
8919         /* get statistics counter */
8920         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8921                                          &veb->stats_idx, NULL, NULL, NULL);
8922         if (ret) {
8923                 dev_info(&veb->pf->pdev->dev,
8924                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8925                          ret, veb->pf->hw.aq.asq_last_status);
8926                 return -EPERM;
8927         }
8928         ret = i40e_veb_get_bw_info(veb);
8929         if (ret) {
8930                 dev_info(&veb->pf->pdev->dev,
8931                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8932                          ret, veb->pf->hw.aq.asq_last_status);
8933                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8934                 return -ENOENT;
8935         }
8936
8937         vsi->uplink_seid = veb->seid;
8938         vsi->veb_idx = veb->idx;
8939         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8940
8941         return 0;
8942 }
8943
8944 /**
8945  * i40e_veb_setup - Set up a VEB
8946  * @pf: board private structure
8947  * @flags: VEB setup flags
8948  * @uplink_seid: the switch element to link to
8949  * @vsi_seid: the initial VSI seid
8950  * @enabled_tc: Enabled TC bit-map
8951  *
8952  * This allocates the sw VEB structure and links it into the switch
8953  * It is possible and legal for this to be a duplicate of an already
8954  * existing VEB.  It is also possible for both uplink and vsi seids
8955  * to be zero, in order to create a floating VEB.
8956  *
8957  * Returns pointer to the successfully allocated VEB sw struct on
8958  * success, otherwise returns NULL on failure.
8959  **/
8960 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8961                                 u16 uplink_seid, u16 vsi_seid,
8962                                 u8 enabled_tc)
8963 {
8964         struct i40e_veb *veb, *uplink_veb = NULL;
8965         int vsi_idx, veb_idx;
8966         int ret;
8967
8968         /* if one seid is 0, the other must be 0 to create a floating relay */
8969         if ((uplink_seid == 0 || vsi_seid == 0) &&
8970             (uplink_seid + vsi_seid != 0)) {
8971                 dev_info(&pf->pdev->dev,
8972                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8973                          uplink_seid, vsi_seid);
8974                 return NULL;
8975         }
8976
8977         /* make sure there is such a vsi and uplink */
8978         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8979                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8980                         break;
8981         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8982                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8983                          vsi_seid);
8984                 return NULL;
8985         }
8986
8987         if (uplink_seid && uplink_seid != pf->mac_seid) {
8988                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8989                         if (pf->veb[veb_idx] &&
8990                             pf->veb[veb_idx]->seid == uplink_seid) {
8991                                 uplink_veb = pf->veb[veb_idx];
8992                                 break;
8993                         }
8994                 }
8995                 if (!uplink_veb) {
8996                         dev_info(&pf->pdev->dev,
8997                                  "uplink seid %d not found\n", uplink_seid);
8998                         return NULL;
8999                 }
9000         }
9001
9002         /* get veb sw struct */
9003         veb_idx = i40e_veb_mem_alloc(pf);
9004         if (veb_idx < 0)
9005                 goto err_alloc;
9006         veb = pf->veb[veb_idx];
9007         veb->flags = flags;
9008         veb->uplink_seid = uplink_seid;
9009         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9010         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9011
9012         /* create the VEB in the switch */
9013         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9014         if (ret)
9015                 goto err_veb;
9016         if (vsi_idx == pf->lan_vsi)
9017                 pf->lan_veb = veb->idx;
9018
9019         return veb;
9020
9021 err_veb:
9022         i40e_veb_clear(veb);
9023 err_alloc:
9024         return NULL;
9025 }
9026
9027 /**
9028  * i40e_setup_pf_switch_element - set pf vars based on switch type
9029  * @pf: board private structure
9030  * @ele: element we are building info from
9031  * @num_reported: total number of elements
9032  * @printconfig: should we print the contents
9033  *
9034  * helper function to assist in extracting a few useful SEID values.
9035  **/
9036 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9037                                 struct i40e_aqc_switch_config_element_resp *ele,
9038                                 u16 num_reported, bool printconfig)
9039 {
9040         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9041         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9042         u8 element_type = ele->element_type;
9043         u16 seid = le16_to_cpu(ele->seid);
9044
9045         if (printconfig)
9046                 dev_info(&pf->pdev->dev,
9047                          "type=%d seid=%d uplink=%d downlink=%d\n",
9048                          element_type, seid, uplink_seid, downlink_seid);
9049
9050         switch (element_type) {
9051         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9052                 pf->mac_seid = seid;
9053                 break;
9054         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9055                 /* Main VEB? */
9056                 if (uplink_seid != pf->mac_seid)
9057                         break;
9058                 if (pf->lan_veb == I40E_NO_VEB) {
9059                         int v;
9060
9061                         /* find existing or else empty VEB */
9062                         for (v = 0; v < I40E_MAX_VEB; v++) {
9063                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9064                                         pf->lan_veb = v;
9065                                         break;
9066                                 }
9067                         }
9068                         if (pf->lan_veb == I40E_NO_VEB) {
9069                                 v = i40e_veb_mem_alloc(pf);
9070                                 if (v < 0)
9071                                         break;
9072                                 pf->lan_veb = v;
9073                         }
9074                 }
9075
9076                 pf->veb[pf->lan_veb]->seid = seid;
9077                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9078                 pf->veb[pf->lan_veb]->pf = pf;
9079                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9080                 break;
9081         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9082                 if (num_reported != 1)
9083                         break;
9084                 /* This is immediately after a reset so we can assume this is
9085                  * the PF's VSI
9086                  */
9087                 pf->mac_seid = uplink_seid;
9088                 pf->pf_seid = downlink_seid;
9089                 pf->main_vsi_seid = seid;
9090                 if (printconfig)
9091                         dev_info(&pf->pdev->dev,
9092                                  "pf_seid=%d main_vsi_seid=%d\n",
9093                                  pf->pf_seid, pf->main_vsi_seid);
9094                 break;
9095         case I40E_SWITCH_ELEMENT_TYPE_PF:
9096         case I40E_SWITCH_ELEMENT_TYPE_VF:
9097         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9098         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9099         case I40E_SWITCH_ELEMENT_TYPE_PE:
9100         case I40E_SWITCH_ELEMENT_TYPE_PA:
9101                 /* ignore these for now */
9102                 break;
9103         default:
9104                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9105                          element_type, seid);
9106                 break;
9107         }
9108 }
9109
9110 /**
9111  * i40e_fetch_switch_configuration - Get switch config from firmware
9112  * @pf: board private structure
9113  * @printconfig: should we print the contents
9114  *
9115  * Get the current switch configuration from the device and
9116  * extract a few useful SEID values.
9117  **/
9118 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9119 {
9120         struct i40e_aqc_get_switch_config_resp *sw_config;
9121         u16 next_seid = 0;
9122         int ret = 0;
9123         u8 *aq_buf;
9124         int i;
9125
9126         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9127         if (!aq_buf)
9128                 return -ENOMEM;
9129
9130         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9131         do {
9132                 u16 num_reported, num_total;
9133
9134                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9135                                                 I40E_AQ_LARGE_BUF,
9136                                                 &next_seid, NULL);
9137                 if (ret) {
9138                         dev_info(&pf->pdev->dev,
9139                                  "get switch config failed %d aq_err=%x\n",
9140                                  ret, pf->hw.aq.asq_last_status);
9141                         kfree(aq_buf);
9142                         return -ENOENT;
9143                 }
9144
9145                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9146                 num_total = le16_to_cpu(sw_config->header.num_total);
9147
9148                 if (printconfig)
9149                         dev_info(&pf->pdev->dev,
9150                                  "header: %d reported %d total\n",
9151                                  num_reported, num_total);
9152
9153                 for (i = 0; i < num_reported; i++) {
9154                         struct i40e_aqc_switch_config_element_resp *ele =
9155                                 &sw_config->element[i];
9156
9157                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9158                                                      printconfig);
9159                 }
9160         } while (next_seid != 0);
9161
9162         kfree(aq_buf);
9163         return ret;
9164 }
9165
9166 /**
9167  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9168  * @pf: board private structure
9169  * @reinit: if the Main VSI needs to re-initialized.
9170  *
9171  * Returns 0 on success, negative value on failure
9172  **/
9173 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9174 {
9175         int ret;
9176
9177         /* find out what's out there already */
9178         ret = i40e_fetch_switch_configuration(pf, false);
9179         if (ret) {
9180                 dev_info(&pf->pdev->dev,
9181                          "couldn't fetch switch config, err %d, aq_err %d\n",
9182                          ret, pf->hw.aq.asq_last_status);
9183                 return ret;
9184         }
9185         i40e_pf_reset_stats(pf);
9186
9187         /* first time setup */
9188         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9189                 struct i40e_vsi *vsi = NULL;
9190                 u16 uplink_seid;
9191
9192                 /* Set up the PF VSI associated with the PF's main VSI
9193                  * that is already in the HW switch
9194                  */
9195                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9196                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9197                 else
9198                         uplink_seid = pf->mac_seid;
9199                 if (pf->lan_vsi == I40E_NO_VSI)
9200                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9201                 else if (reinit)
9202                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9203                 if (!vsi) {
9204                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9205                         i40e_fdir_teardown(pf);
9206                         return -EAGAIN;
9207                 }
9208         } else {
9209                 /* force a reset of TC and queue layout configurations */
9210                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9211                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9212                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9213                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9214         }
9215         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9216
9217         i40e_fdir_sb_setup(pf);
9218
9219         /* Setup static PF queue filter control settings */
9220         ret = i40e_setup_pf_filter_control(pf);
9221         if (ret) {
9222                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9223                          ret);
9224                 /* Failure here should not stop continuing other steps */
9225         }
9226
9227         /* enable RSS in the HW, even for only one queue, as the stack can use
9228          * the hash
9229          */
9230         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9231                 i40e_config_rss(pf);
9232
9233         /* fill in link information and enable LSE reporting */
9234         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9235         i40e_link_event(pf);
9236
9237         /* Initialize user-specific link properties */
9238         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9239                                   I40E_AQ_AN_COMPLETED) ? true : false);
9240
9241         /* fill in link information and enable LSE reporting */
9242         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9243         i40e_link_event(pf);
9244
9245         /* Initialize user-specific link properties */
9246         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9247                                   I40E_AQ_AN_COMPLETED) ? true : false);
9248
9249         i40e_ptp_init(pf);
9250
9251         return ret;
9252 }
9253
9254 /**
9255  * i40e_determine_queue_usage - Work out queue distribution
9256  * @pf: board private structure
9257  **/
9258 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9259 {
9260         int queues_left;
9261
9262         pf->num_lan_qps = 0;
9263 #ifdef I40E_FCOE
9264         pf->num_fcoe_qps = 0;
9265 #endif
9266
9267         /* Find the max queues to be put into basic use.  We'll always be
9268          * using TC0, whether or not DCB is running, and TC0 will get the
9269          * big RSS set.
9270          */
9271         queues_left = pf->hw.func_caps.num_tx_qp;
9272
9273         if ((queues_left == 1) ||
9274             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9275                 /* one qp for PF, no queues for anything else */
9276                 queues_left = 0;
9277                 pf->rss_size = pf->num_lan_qps = 1;
9278
9279                 /* make sure all the fancies are disabled */
9280                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9281 #ifdef I40E_FCOE
9282                                I40E_FLAG_FCOE_ENABLED   |
9283 #endif
9284                                I40E_FLAG_FD_SB_ENABLED  |
9285                                I40E_FLAG_FD_ATR_ENABLED |
9286                                I40E_FLAG_DCB_CAPABLE    |
9287                                I40E_FLAG_SRIOV_ENABLED  |
9288                                I40E_FLAG_VMDQ_ENABLED);
9289         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9290                                   I40E_FLAG_FD_SB_ENABLED |
9291                                   I40E_FLAG_FD_ATR_ENABLED |
9292                                   I40E_FLAG_DCB_CAPABLE))) {
9293                 /* one qp for PF */
9294                 pf->rss_size = pf->num_lan_qps = 1;
9295                 queues_left -= pf->num_lan_qps;
9296
9297                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9298 #ifdef I40E_FCOE
9299                                I40E_FLAG_FCOE_ENABLED   |
9300 #endif
9301                                I40E_FLAG_FD_SB_ENABLED  |
9302                                I40E_FLAG_FD_ATR_ENABLED |
9303                                I40E_FLAG_DCB_ENABLED    |
9304                                I40E_FLAG_VMDQ_ENABLED);
9305         } else {
9306                 /* Not enough queues for all TCs */
9307                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9308                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9309                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9310                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9311                 }
9312                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9313                                         num_online_cpus());
9314                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9315                                         pf->hw.func_caps.num_tx_qp);
9316
9317                 queues_left -= pf->num_lan_qps;
9318         }
9319
9320 #ifdef I40E_FCOE
9321         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9322                 if (I40E_DEFAULT_FCOE <= queues_left) {
9323                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9324                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9325                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9326                 } else {
9327                         pf->num_fcoe_qps = 0;
9328                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9329                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9330                 }
9331
9332                 queues_left -= pf->num_fcoe_qps;
9333         }
9334
9335 #endif
9336         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9337                 if (queues_left > 1) {
9338                         queues_left -= 1; /* save 1 queue for FD */
9339                 } else {
9340                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9341                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9342                 }
9343         }
9344
9345         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9346             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9347                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9348                                         (queues_left / pf->num_vf_qps));
9349                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9350         }
9351
9352         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9353             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9354                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9355                                           (queues_left / pf->num_vmdq_qps));
9356                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9357         }
9358
9359         pf->queues_left = queues_left;
9360 #ifdef I40E_FCOE
9361         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9362 #endif
9363 }
9364
9365 /**
9366  * i40e_setup_pf_filter_control - Setup PF static filter control
9367  * @pf: PF to be setup
9368  *
9369  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9370  * settings. If PE/FCoE are enabled then it will also set the per PF
9371  * based filter sizes required for them. It also enables Flow director,
9372  * ethertype and macvlan type filter settings for the pf.
9373  *
9374  * Returns 0 on success, negative on failure
9375  **/
9376 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9377 {
9378         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9379
9380         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9381
9382         /* Flow Director is enabled */
9383         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9384                 settings->enable_fdir = true;
9385
9386         /* Ethtype and MACVLAN filters enabled for PF */
9387         settings->enable_ethtype = true;
9388         settings->enable_macvlan = true;
9389
9390         if (i40e_set_filter_control(&pf->hw, settings))
9391                 return -ENOENT;
9392
9393         return 0;
9394 }
9395
9396 #define INFO_STRING_LEN 255
9397 static void i40e_print_features(struct i40e_pf *pf)
9398 {
9399         struct i40e_hw *hw = &pf->hw;
9400         char *buf, *string;
9401
9402         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9403         if (!string) {
9404                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9405                 return;
9406         }
9407
9408         buf = string;
9409
9410         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9411 #ifdef CONFIG_PCI_IOV
9412         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9413 #endif
9414         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9415                        pf->hw.func_caps.num_vsis,
9416                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9417                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9418
9419         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9420                 buf += sprintf(buf, "RSS ");
9421         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9422                 buf += sprintf(buf, "FD_ATR ");
9423         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9424                 buf += sprintf(buf, "FD_SB ");
9425                 buf += sprintf(buf, "NTUPLE ");
9426         }
9427         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9428                 buf += sprintf(buf, "DCB ");
9429         if (pf->flags & I40E_FLAG_PTP)
9430                 buf += sprintf(buf, "PTP ");
9431 #ifdef I40E_FCOE
9432         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9433                 buf += sprintf(buf, "FCOE ");
9434 #endif
9435
9436         BUG_ON(buf > (string + INFO_STRING_LEN));
9437         dev_info(&pf->pdev->dev, "%s\n", string);
9438         kfree(string);
9439 }
9440
9441 /**
9442  * i40e_probe - Device initialization routine
9443  * @pdev: PCI device information struct
9444  * @ent: entry in i40e_pci_tbl
9445  *
9446  * i40e_probe initializes a pf identified by a pci_dev structure.
9447  * The OS initialization, configuring of the pf private structure,
9448  * and a hardware reset occur.
9449  *
9450  * Returns 0 on success, negative on failure
9451  **/
9452 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9453 {
9454         struct i40e_aq_get_phy_abilities_resp abilities;
9455         struct i40e_pf *pf;
9456         struct i40e_hw *hw;
9457         static u16 pfs_found;
9458         u16 link_status;
9459         int err = 0;
9460         u32 len;
9461         u32 i;
9462
9463         err = pci_enable_device_mem(pdev);
9464         if (err)
9465                 return err;
9466
9467         /* set up for high or low dma */
9468         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9469         if (err) {
9470                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9471                 if (err) {
9472                         dev_err(&pdev->dev,
9473                                 "DMA configuration failed: 0x%x\n", err);
9474                         goto err_dma;
9475                 }
9476         }
9477
9478         /* set up pci connections */
9479         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9480                                            IORESOURCE_MEM), i40e_driver_name);
9481         if (err) {
9482                 dev_info(&pdev->dev,
9483                          "pci_request_selected_regions failed %d\n", err);
9484                 goto err_pci_reg;
9485         }
9486
9487         pci_enable_pcie_error_reporting(pdev);
9488         pci_set_master(pdev);
9489
9490         /* Now that we have a PCI connection, we need to do the
9491          * low level device setup.  This is primarily setting up
9492          * the Admin Queue structures and then querying for the
9493          * device's current profile information.
9494          */
9495         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9496         if (!pf) {
9497                 err = -ENOMEM;
9498                 goto err_pf_alloc;
9499         }
9500         pf->next_vsi = 0;
9501         pf->pdev = pdev;
9502         set_bit(__I40E_DOWN, &pf->state);
9503
9504         hw = &pf->hw;
9505         hw->back = pf;
9506         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9507                               pci_resource_len(pdev, 0));
9508         if (!hw->hw_addr) {
9509                 err = -EIO;
9510                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9511                          (unsigned int)pci_resource_start(pdev, 0),
9512                          (unsigned int)pci_resource_len(pdev, 0), err);
9513                 goto err_ioremap;
9514         }
9515         hw->vendor_id = pdev->vendor;
9516         hw->device_id = pdev->device;
9517         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9518         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9519         hw->subsystem_device_id = pdev->subsystem_device;
9520         hw->bus.device = PCI_SLOT(pdev->devfn);
9521         hw->bus.func = PCI_FUNC(pdev->devfn);
9522         pf->instance = pfs_found;
9523
9524         if (debug != -1) {
9525                 pf->msg_enable = pf->hw.debug_mask;
9526                 pf->msg_enable = debug;
9527         }
9528
9529         /* do a special CORER for clearing PXE mode once at init */
9530         if (hw->revision_id == 0 &&
9531             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9532                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9533                 i40e_flush(hw);
9534                 msleep(200);
9535                 pf->corer_count++;
9536
9537                 i40e_clear_pxe_mode(hw);
9538         }
9539
9540         /* Reset here to make sure all is clean and to define PF 'n' */
9541         i40e_clear_hw(hw);
9542         err = i40e_pf_reset(hw);
9543         if (err) {
9544                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9545                 goto err_pf_reset;
9546         }
9547         pf->pfr_count++;
9548
9549         hw->aq.num_arq_entries = I40E_AQ_LEN;
9550         hw->aq.num_asq_entries = I40E_AQ_LEN;
9551         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9552         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9553         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9554
9555         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9556                  "%s-%s:misc",
9557                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9558
9559         err = i40e_init_shared_code(hw);
9560         if (err) {
9561                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9562                 goto err_pf_reset;
9563         }
9564
9565         /* set up a default setting for link flow control */
9566         pf->hw.fc.requested_mode = I40E_FC_NONE;
9567
9568         err = i40e_init_adminq(hw);
9569         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9570         if (err) {
9571                 dev_info(&pdev->dev,
9572                          "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");
9573                 goto err_pf_reset;
9574         }
9575
9576         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9577             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9578                 dev_info(&pdev->dev,
9579                          "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");
9580         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9581                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9582                 dev_info(&pdev->dev,
9583                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9584
9585
9586         i40e_verify_eeprom(pf);
9587
9588         /* Rev 0 hardware was never productized */
9589         if (hw->revision_id < 1)
9590                 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");
9591
9592         i40e_clear_pxe_mode(hw);
9593         err = i40e_get_capabilities(pf);
9594         if (err)
9595                 goto err_adminq_setup;
9596
9597         err = i40e_sw_init(pf);
9598         if (err) {
9599                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9600                 goto err_sw_init;
9601         }
9602
9603         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9604                                 hw->func_caps.num_rx_qp,
9605                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9606         if (err) {
9607                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9608                 goto err_init_lan_hmc;
9609         }
9610
9611         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9612         if (err) {
9613                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9614                 err = -ENOENT;
9615                 goto err_configure_lan_hmc;
9616         }
9617
9618         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9619          * Ignore error return codes because if it was already disabled via
9620          * hardware settings this will fail
9621          */
9622         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9623             (pf->hw.aq.fw_maj_ver < 4)) {
9624                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9625                 i40e_aq_stop_lldp(hw, true, NULL);
9626         }
9627
9628         i40e_get_mac_addr(hw, hw->mac.addr);
9629         if (!is_valid_ether_addr(hw->mac.addr)) {
9630                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9631                 err = -EIO;
9632                 goto err_mac_addr;
9633         }
9634         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9635         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9636         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9637         if (is_valid_ether_addr(hw->mac.port_addr))
9638                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9639 #ifdef I40E_FCOE
9640         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9641         if (err)
9642                 dev_info(&pdev->dev,
9643                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9644         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9645                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9646                          hw->mac.san_addr);
9647                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9648         }
9649         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9650 #endif /* I40E_FCOE */
9651
9652         pci_set_drvdata(pdev, pf);
9653         pci_save_state(pdev);
9654 #ifdef CONFIG_I40E_DCB
9655         err = i40e_init_pf_dcb(pf);
9656         if (err) {
9657                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9658                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9659                 /* Continue without DCB enabled */
9660         }
9661 #endif /* CONFIG_I40E_DCB */
9662
9663         /* set up periodic task facility */
9664         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9665         pf->service_timer_period = HZ;
9666
9667         INIT_WORK(&pf->service_task, i40e_service_task);
9668         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9669         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9670         pf->link_check_timeout = jiffies;
9671
9672         /* WoL defaults to disabled */
9673         pf->wol_en = false;
9674         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9675
9676         /* set up the main switch operations */
9677         i40e_determine_queue_usage(pf);
9678         i40e_init_interrupt_scheme(pf);
9679
9680         /* The number of VSIs reported by the FW is the minimum guaranteed
9681          * to us; HW supports far more and we share the remaining pool with
9682          * the other PFs. We allocate space for more than the guarantee with
9683          * the understanding that we might not get them all later.
9684          */
9685         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9686                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9687         else
9688                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9689
9690         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9691         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9692         pf->vsi = kzalloc(len, GFP_KERNEL);
9693         if (!pf->vsi) {
9694                 err = -ENOMEM;
9695                 goto err_switch_setup;
9696         }
9697
9698         err = i40e_setup_pf_switch(pf, false);
9699         if (err) {
9700                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9701                 goto err_vsis;
9702         }
9703         /* if FDIR VSI was set up, start it now */
9704         for (i = 0; i < pf->num_alloc_vsi; i++) {
9705                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9706                         i40e_vsi_open(pf->vsi[i]);
9707                         break;
9708                 }
9709         }
9710
9711         /* driver is only interested in link up/down and module qualification
9712          * reports from firmware
9713          */
9714         err = i40e_aq_set_phy_int_mask(&pf->hw,
9715                                        I40E_AQ_EVENT_LINK_UPDOWN |
9716                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9717         if (err)
9718                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9719
9720         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9721             (pf->hw.aq.fw_maj_ver < 4)) {
9722                 msleep(75);
9723                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9724                 if (err)
9725                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9726                                  pf->hw.aq.asq_last_status);
9727         }
9728         /* The main driver is (mostly) up and happy. We need to set this state
9729          * before setting up the misc vector or we get a race and the vector
9730          * ends up disabled forever.
9731          */
9732         clear_bit(__I40E_DOWN, &pf->state);
9733
9734         /* In case of MSIX we are going to setup the misc vector right here
9735          * to handle admin queue events etc. In case of legacy and MSI
9736          * the misc functionality and queue processing is combined in
9737          * the same vector and that gets setup at open.
9738          */
9739         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9740                 err = i40e_setup_misc_vector(pf);
9741                 if (err) {
9742                         dev_info(&pdev->dev,
9743                                  "setup of misc vector failed: %d\n", err);
9744                         goto err_vsis;
9745                 }
9746         }
9747
9748 #ifdef CONFIG_PCI_IOV
9749         /* prep for VF support */
9750         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9751             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9752             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9753                 u32 val;
9754
9755                 /* disable link interrupts for VFs */
9756                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9757                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9758                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9759                 i40e_flush(hw);
9760
9761                 if (pci_num_vf(pdev)) {
9762                         dev_info(&pdev->dev,
9763                                  "Active VFs found, allocating resources.\n");
9764                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9765                         if (err)
9766                                 dev_info(&pdev->dev,
9767                                          "Error %d allocating resources for existing VFs\n",
9768                                          err);
9769                 }
9770         }
9771 #endif /* CONFIG_PCI_IOV */
9772
9773         pfs_found++;
9774
9775         i40e_dbg_pf_init(pf);
9776
9777         /* tell the firmware that we're starting */
9778         i40e_send_version(pf);
9779
9780         /* since everything's happy, start the service_task timer */
9781         mod_timer(&pf->service_timer,
9782                   round_jiffies(jiffies + pf->service_timer_period));
9783
9784 #ifdef I40E_FCOE
9785         /* create FCoE interface */
9786         i40e_fcoe_vsi_setup(pf);
9787
9788 #endif
9789         /* Get the negotiated link width and speed from PCI config space */
9790         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9791
9792         i40e_set_pci_config_data(hw, link_status);
9793
9794         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9795                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9796                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9797                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9798                  "Unknown"),
9799                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9800                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9801                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9802                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9803                  "Unknown"));
9804
9805         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9806             hw->bus.speed < i40e_bus_speed_8000) {
9807                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9808                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9809         }
9810
9811         /* get the requested speeds from the fw */
9812         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9813         if (err)
9814                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9815                          err);
9816         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9817
9818         /* print a string summarizing features */
9819         i40e_print_features(pf);
9820
9821         return 0;
9822
9823         /* Unwind what we've done if something failed in the setup */
9824 err_vsis:
9825         set_bit(__I40E_DOWN, &pf->state);
9826         i40e_clear_interrupt_scheme(pf);
9827         kfree(pf->vsi);
9828 err_switch_setup:
9829         i40e_reset_interrupt_capability(pf);
9830         del_timer_sync(&pf->service_timer);
9831 err_mac_addr:
9832 err_configure_lan_hmc:
9833         (void)i40e_shutdown_lan_hmc(hw);
9834 err_init_lan_hmc:
9835         kfree(pf->qp_pile);
9836         kfree(pf->irq_pile);
9837 err_sw_init:
9838 err_adminq_setup:
9839         (void)i40e_shutdown_adminq(hw);
9840 err_pf_reset:
9841         iounmap(hw->hw_addr);
9842 err_ioremap:
9843         kfree(pf);
9844 err_pf_alloc:
9845         pci_disable_pcie_error_reporting(pdev);
9846         pci_release_selected_regions(pdev,
9847                                      pci_select_bars(pdev, IORESOURCE_MEM));
9848 err_pci_reg:
9849 err_dma:
9850         pci_disable_device(pdev);
9851         return err;
9852 }
9853
9854 /**
9855  * i40e_remove - Device removal routine
9856  * @pdev: PCI device information struct
9857  *
9858  * i40e_remove is called by the PCI subsystem to alert the driver
9859  * that is should release a PCI device.  This could be caused by a
9860  * Hot-Plug event, or because the driver is going to be removed from
9861  * memory.
9862  **/
9863 static void i40e_remove(struct pci_dev *pdev)
9864 {
9865         struct i40e_pf *pf = pci_get_drvdata(pdev);
9866         i40e_status ret_code;
9867         int i;
9868
9869         i40e_dbg_pf_exit(pf);
9870
9871         i40e_ptp_stop(pf);
9872
9873         /* no more scheduling of any task */
9874         set_bit(__I40E_DOWN, &pf->state);
9875         del_timer_sync(&pf->service_timer);
9876         cancel_work_sync(&pf->service_task);
9877         i40e_fdir_teardown(pf);
9878
9879         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9880                 i40e_free_vfs(pf);
9881                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9882         }
9883
9884         i40e_fdir_teardown(pf);
9885
9886         /* If there is a switch structure or any orphans, remove them.
9887          * This will leave only the PF's VSI remaining.
9888          */
9889         for (i = 0; i < I40E_MAX_VEB; i++) {
9890                 if (!pf->veb[i])
9891                         continue;
9892
9893                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9894                     pf->veb[i]->uplink_seid == 0)
9895                         i40e_switch_branch_release(pf->veb[i]);
9896         }
9897
9898         /* Now we can shutdown the PF's VSI, just before we kill
9899          * adminq and hmc.
9900          */
9901         if (pf->vsi[pf->lan_vsi])
9902                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9903
9904         /* shutdown and destroy the HMC */
9905         if (pf->hw.hmc.hmc_obj) {
9906                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9907                 if (ret_code)
9908                         dev_warn(&pdev->dev,
9909                                  "Failed to destroy the HMC resources: %d\n",
9910                                  ret_code);
9911         }
9912
9913         /* shutdown the adminq */
9914         ret_code = i40e_shutdown_adminq(&pf->hw);
9915         if (ret_code)
9916                 dev_warn(&pdev->dev,
9917                          "Failed to destroy the Admin Queue resources: %d\n",
9918                          ret_code);
9919
9920         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9921         i40e_clear_interrupt_scheme(pf);
9922         for (i = 0; i < pf->num_alloc_vsi; i++) {
9923                 if (pf->vsi[i]) {
9924                         i40e_vsi_clear_rings(pf->vsi[i]);
9925                         i40e_vsi_clear(pf->vsi[i]);
9926                         pf->vsi[i] = NULL;
9927                 }
9928         }
9929
9930         for (i = 0; i < I40E_MAX_VEB; i++) {
9931                 kfree(pf->veb[i]);
9932                 pf->veb[i] = NULL;
9933         }
9934
9935         kfree(pf->qp_pile);
9936         kfree(pf->irq_pile);
9937         kfree(pf->vsi);
9938
9939         iounmap(pf->hw.hw_addr);
9940         kfree(pf);
9941         pci_release_selected_regions(pdev,
9942                                      pci_select_bars(pdev, IORESOURCE_MEM));
9943
9944         pci_disable_pcie_error_reporting(pdev);
9945         pci_disable_device(pdev);
9946 }
9947
9948 /**
9949  * i40e_pci_error_detected - warning that something funky happened in PCI land
9950  * @pdev: PCI device information struct
9951  *
9952  * Called to warn that something happened and the error handling steps
9953  * are in progress.  Allows the driver to quiesce things, be ready for
9954  * remediation.
9955  **/
9956 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9957                                                 enum pci_channel_state error)
9958 {
9959         struct i40e_pf *pf = pci_get_drvdata(pdev);
9960
9961         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9962
9963         /* shutdown all operations */
9964         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9965                 rtnl_lock();
9966                 i40e_prep_for_reset(pf);
9967                 rtnl_unlock();
9968         }
9969
9970         /* Request a slot reset */
9971         return PCI_ERS_RESULT_NEED_RESET;
9972 }
9973
9974 /**
9975  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9976  * @pdev: PCI device information struct
9977  *
9978  * Called to find if the driver can work with the device now that
9979  * the pci slot has been reset.  If a basic connection seems good
9980  * (registers are readable and have sane content) then return a
9981  * happy little PCI_ERS_RESULT_xxx.
9982  **/
9983 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9984 {
9985         struct i40e_pf *pf = pci_get_drvdata(pdev);
9986         pci_ers_result_t result;
9987         int err;
9988         u32 reg;
9989
9990         dev_info(&pdev->dev, "%s\n", __func__);
9991         if (pci_enable_device_mem(pdev)) {
9992                 dev_info(&pdev->dev,
9993                          "Cannot re-enable PCI device after reset.\n");
9994                 result = PCI_ERS_RESULT_DISCONNECT;
9995         } else {
9996                 pci_set_master(pdev);
9997                 pci_restore_state(pdev);
9998                 pci_save_state(pdev);
9999                 pci_wake_from_d3(pdev, false);
10000
10001                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10002                 if (reg == 0)
10003                         result = PCI_ERS_RESULT_RECOVERED;
10004                 else
10005                         result = PCI_ERS_RESULT_DISCONNECT;
10006         }
10007
10008         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10009         if (err) {
10010                 dev_info(&pdev->dev,
10011                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10012                          err);
10013                 /* non-fatal, continue */
10014         }
10015
10016         return result;
10017 }
10018
10019 /**
10020  * i40e_pci_error_resume - restart operations after PCI error recovery
10021  * @pdev: PCI device information struct
10022  *
10023  * Called to allow the driver to bring things back up after PCI error
10024  * and/or reset recovery has finished.
10025  **/
10026 static void i40e_pci_error_resume(struct pci_dev *pdev)
10027 {
10028         struct i40e_pf *pf = pci_get_drvdata(pdev);
10029
10030         dev_info(&pdev->dev, "%s\n", __func__);
10031         if (test_bit(__I40E_SUSPENDED, &pf->state))
10032                 return;
10033
10034         rtnl_lock();
10035         i40e_handle_reset_warning(pf);
10036         rtnl_lock();
10037 }
10038
10039 /**
10040  * i40e_shutdown - PCI callback for shutting down
10041  * @pdev: PCI device information struct
10042  **/
10043 static void i40e_shutdown(struct pci_dev *pdev)
10044 {
10045         struct i40e_pf *pf = pci_get_drvdata(pdev);
10046         struct i40e_hw *hw = &pf->hw;
10047
10048         set_bit(__I40E_SUSPENDED, &pf->state);
10049         set_bit(__I40E_DOWN, &pf->state);
10050         rtnl_lock();
10051         i40e_prep_for_reset(pf);
10052         rtnl_unlock();
10053
10054         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10055         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10056
10057         i40e_clear_interrupt_scheme(pf);
10058
10059         if (system_state == SYSTEM_POWER_OFF) {
10060                 pci_wake_from_d3(pdev, pf->wol_en);
10061                 pci_set_power_state(pdev, PCI_D3hot);
10062         }
10063 }
10064
10065 #ifdef CONFIG_PM
10066 /**
10067  * i40e_suspend - PCI callback for moving to D3
10068  * @pdev: PCI device information struct
10069  **/
10070 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10071 {
10072         struct i40e_pf *pf = pci_get_drvdata(pdev);
10073         struct i40e_hw *hw = &pf->hw;
10074
10075         set_bit(__I40E_SUSPENDED, &pf->state);
10076         set_bit(__I40E_DOWN, &pf->state);
10077         del_timer_sync(&pf->service_timer);
10078         cancel_work_sync(&pf->service_task);
10079         rtnl_lock();
10080         i40e_prep_for_reset(pf);
10081         rtnl_unlock();
10082
10083         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10084         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10085
10086         pci_wake_from_d3(pdev, pf->wol_en);
10087         pci_set_power_state(pdev, PCI_D3hot);
10088
10089         return 0;
10090 }
10091
10092 /**
10093  * i40e_resume - PCI callback for waking up from D3
10094  * @pdev: PCI device information struct
10095  **/
10096 static int i40e_resume(struct pci_dev *pdev)
10097 {
10098         struct i40e_pf *pf = pci_get_drvdata(pdev);
10099         u32 err;
10100
10101         pci_set_power_state(pdev, PCI_D0);
10102         pci_restore_state(pdev);
10103         /* pci_restore_state() clears dev->state_saves, so
10104          * call pci_save_state() again to restore it.
10105          */
10106         pci_save_state(pdev);
10107
10108         err = pci_enable_device_mem(pdev);
10109         if (err) {
10110                 dev_err(&pdev->dev,
10111                         "%s: Cannot enable PCI device from suspend\n",
10112                         __func__);
10113                 return err;
10114         }
10115         pci_set_master(pdev);
10116
10117         /* no wakeup events while running */
10118         pci_wake_from_d3(pdev, false);
10119
10120         /* handling the reset will rebuild the device state */
10121         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10122                 clear_bit(__I40E_DOWN, &pf->state);
10123                 rtnl_lock();
10124                 i40e_reset_and_rebuild(pf, false);
10125                 rtnl_unlock();
10126         }
10127
10128         return 0;
10129 }
10130
10131 #endif
10132 static const struct pci_error_handlers i40e_err_handler = {
10133         .error_detected = i40e_pci_error_detected,
10134         .slot_reset = i40e_pci_error_slot_reset,
10135         .resume = i40e_pci_error_resume,
10136 };
10137
10138 static struct pci_driver i40e_driver = {
10139         .name     = i40e_driver_name,
10140         .id_table = i40e_pci_tbl,
10141         .probe    = i40e_probe,
10142         .remove   = i40e_remove,
10143 #ifdef CONFIG_PM
10144         .suspend  = i40e_suspend,
10145         .resume   = i40e_resume,
10146 #endif
10147         .shutdown = i40e_shutdown,
10148         .err_handler = &i40e_err_handler,
10149         .sriov_configure = i40e_pci_sriov_configure,
10150 };
10151
10152 /**
10153  * i40e_init_module - Driver registration routine
10154  *
10155  * i40e_init_module is the first routine called when the driver is
10156  * loaded. All it does is register with the PCI subsystem.
10157  **/
10158 static int __init i40e_init_module(void)
10159 {
10160         pr_info("%s: %s - version %s\n", i40e_driver_name,
10161                 i40e_driver_string, i40e_driver_version_str);
10162         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10163
10164 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10165         i40e_configfs_init();
10166 #endif /* CONFIG_I40E_CONFIGFS_FS */
10167         i40e_dbg_init();
10168         return pci_register_driver(&i40e_driver);
10169 }
10170 module_init(i40e_init_module);
10171
10172 /**
10173  * i40e_exit_module - Driver exit cleanup routine
10174  *
10175  * i40e_exit_module is called just before the driver is removed
10176  * from memory.
10177  **/
10178 static void __exit i40e_exit_module(void)
10179 {
10180         pci_unregister_driver(&i40e_driver);
10181         i40e_dbg_exit();
10182 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10183         i40e_configfs_exit();
10184 #endif /* CONFIG_I40E_CONFIGFS_FS */
10185 }
10186 module_exit(i40e_exit_module);